lints(clippy)

feat(server): integrate X25519 unseal handler in UserAgentActor
feat(server): add X25519 ECDH for secure unseal protocol
2026-03-11 14:05:03 +01:00 · 2026-03-11 14:05:03 +01:00 · 2026-03-11 14:05:03 +01:00 · 2026-03-11 14:04:46 +01:00 · 2026-03-11 14:04:46 +01:00 · 2026-03-11 14:03:45 +01:00
58 changed files with 3042 additions and 2737 deletions
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +0,0 @@
-{
-    "git.enabled": false
-}
--- a/.woodpecker/server-audit.yaml
+++ b/.woodpecker/server-audit.yaml
@@ -8,7 +8,7 @@ when:
      include: ['.woodpecker/server-*.yaml', 'server/**']

 steps:
-  - name: audit
+  - name: test
    image: jdxcode/mise:latest
    directory: server
    environment:
--- a/.woodpecker/server-lint.yaml
+++ b/.woodpecker/server-lint.yaml
@@ -1,25 +0,0 @@
-when:
-  - event: pull_request
-    path:
-      include: ['.woodpecker/server-*.yaml', 'server/**']
-  - event: push
-    branch: main
-    path:
-      include: ['.woodpecker/server-*.yaml', 'server/**']
-
-steps:
-  - name: lint
-    image: jdxcode/mise:latest
-    directory: server
-    environment:
-      CARGO_TERM_COLOR: always
-      CARGO_TARGET_DIR: /usr/local/cargo/target
-      CARGO_HOME: /usr/local/cargo/registry
-    volumes:
-      - cargo-target:/usr/local/cargo/target
-      - cargo-registry:/usr/local/cargo/registry
-    commands:
-      - apt-get update && apt-get install -y pkg-config
-      - mise install rust 
-      - mise install protoc
-      - mise exec rust -- cargo clippy --all-targets --all-features -- -D warnings
--- a/.woodpecker/server-vet.yaml
+++ b/.woodpecker/server-vet.yaml
@@ -8,7 +8,7 @@ when:
      include: ['.woodpecker/server-*.yaml', 'server/**']

 steps:
-  - name: vet
+  - name: test
    image: jdxcode/mise:latest
    directory: server
    environment:
--- a/mise.lock
+++ b/mise.lock
@@ -10,10 +10,6 @@ backend = "cargo:cargo-features"
 version = "0.11.1"
 backend = "cargo:cargo-features-manager"

-[[tools."cargo:cargo-insta"]]
-version = "1.46.3"
-backend = "cargo:cargo-insta"
-
 [[tools."cargo:cargo-nextest"]]
 version = "0.9.126"
 backend = "cargo:cargo-nextest"
--- a/mise.toml
+++ b/mise.toml
@@ -2,10 +2,10 @@
 "cargo:diesel_cli" = { version = "2.3.6", features = "sqlite,sqlite-bundled", default-features = false }
 "cargo:cargo-audit" = "0.22.1"
 "cargo:cargo-vet" = "0.10.2"
+
 flutter = "3.38.9-stable"
 protoc = "29.6"
-"rust" = {version = "1.93.0", components = "clippy"}
+rust = "1.93.1"
 "cargo:cargo-features-manager" = "0.11.1"
 "cargo:cargo-nextest" = "0.9.126"
 "cargo:cargo-shear" = "latest"
-"cargo:cargo-insta" = "1.46.3"
--- a/protobufs/arbiter.proto
+++ b/protobufs/arbiter.proto
@@ -3,14 +3,111 @@ syntax = "proto3";
 package arbiter;

 import "auth.proto";
-import "client.proto";
-import "user_agent.proto";
+
+message ClientRequest {
+  oneof payload {
+    arbiter.auth.ClientMessage auth_message = 1;
+    CertRotationAck cert_rotation_ack = 2;
+  }
+}
+
+message ClientResponse {
+  oneof payload {
+    arbiter.auth.ServerMessage auth_message = 1;
+    CertRotationNotification cert_rotation_notification = 2;
+  }
+}
+
+message UserAgentRequest {
+  oneof payload {
+    arbiter.auth.ClientMessage auth_message = 1;
+    CertRotationAck cert_rotation_ack = 2;
+    UnsealRequest unseal_request = 3;
+  }
+}
+message UserAgentResponse {
+  oneof payload {
+    arbiter.auth.ServerMessage auth_message = 1;
+    CertRotationNotification cert_rotation_notification = 2;
+    UnsealResponse unseal_response = 3;
+  }
+}

 message ServerInfo {
  string version = 1;
  bytes cert_public_key = 2;
 }

+// TLS Certificate Rotation Protocol
+message CertRotationNotification {
+  // New public certificate (DER-encoded)
+  bytes new_cert = 1;
+
+  // Unix timestamp when rotation will be executed (if all ACKs received)
+  int64 rotation_scheduled_at = 2;
+
+  // Unix timestamp deadline for ACK (7 days from now)
+  int64 ack_deadline = 3;
+
+  // Rotation ID for tracking
+  int32 rotation_id = 4;
+}
+
+message CertRotationAck {
+  // Rotation ID (from CertRotationNotification)
+  int32 rotation_id = 1;
+
+  // Client public key for identification
+  bytes client_public_key = 2;
+
+  // Confirmation that client saved the new certificate
+  bool cert_saved = 3;
+}
+
+// Vault Unseal Protocol (X25519 ECDH + ChaCha20Poly1305)
+message UnsealRequest {
+  oneof payload {
+    EphemeralKeyRequest ephemeral_key_request = 1;
+    SealedPassword sealed_password = 2;
+  }
+}
+
+message UnsealResponse {
+  oneof payload {
+    EphemeralKeyResponse ephemeral_key_response = 1;
+    UnsealResult unseal_result = 2;
+  }
+}
+
+message EphemeralKeyRequest {}
+
+message EphemeralKeyResponse {
+  // Server's X25519 ephemeral public key (32 bytes)
+  bytes server_pubkey = 1;
+
+  // Unix timestamp when this key expires (60 seconds from generation)
+  int64 expires_at = 2;
+}
+
+message SealedPassword {
+  // Client's X25519 ephemeral public key (32 bytes)
+  bytes client_pubkey = 1;
+
+  // ChaCha20Poly1305 encrypted password (ciphertext + tag)
+  bytes encrypted_password = 2;
+
+  // 12-byte nonce for ChaCha20Poly1305
+  bytes nonce = 3;
+}
+
+message UnsealResult {
+  // Whether unseal was successful
+  bool success = 1;
+
+  // Error message if unseal failed
+  optional string error_message = 2;
+}
+
 service ArbiterService {
  rpc Client(stream ClientRequest) returns (stream ClientResponse);
  rpc UserAgent(stream UserAgentRequest) returns (stream UserAgentResponse);
--- a/protobufs/client.proto
+++ b/protobufs/client.proto
@@ -1,17 +0,0 @@
-syntax = "proto3";
-
-package arbiter;
-
-import "auth.proto";
-
-message ClientRequest {
-  oneof payload {
-    arbiter.auth.ClientMessage auth_message = 1;
-  }
-}
-
-message ClientResponse {
-  oneof payload {
-    arbiter.auth.ServerMessage auth_message = 1;
-  }
-}
--- a/protobufs/google/protobuf/timestamp.proto
+++ b/protobufs/google/protobuf/timestamp.proto
@@ -0,0 +1,46 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+
+syntax = "proto3";
+
+package google.protobuf;
+
+option csharp_namespace = "Google.Protobuf.WellKnownTypes";
+option cc_enable_arenas = true;
+option go_package = "google.golang.org/protobuf/types/known/timestamppb";
+option java_package = "com.google.protobuf";
+option java_outer_classname = "TimestampProto";
+option java_multiple_files = true;
+option objc_class_prefix = "GPB";
+
+// A Timestamp represents a point in time independent of any time zone or local
+// calendar, encoded as a count of seconds and fractions of seconds at
+// nanosecond resolution. The count is relative to an epoch at UTC midnight on
+// January 1, 1970, in the proleptic Gregorian calendar which extends the
+// Gregorian calendar backwards to year one.
+message Timestamp {
+  // Represents seconds of UTC time since Unix epoch
+  // 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
+  // 9999-12-31T23:59:59Z inclusive.
+  int64 seconds = 1;
+
+  // Non-negative fractions of a second at nanosecond resolution. Negative
+  // second values with fractions must still have non-negative nanos values
+  // that count forward in time. Must be from 0 to 999,999,999
+  // inclusive.
+  int32 nanos = 2;
+}
--- a/protobufs/unseal.proto
+++ b/protobufs/unseal.proto
@@ -2,24 +2,13 @@ syntax = "proto3";

 package arbiter.unseal;

-import "google/protobuf/empty.proto";
+message UserAgentKeyRequest {}

-message UnsealStart {
-  bytes client_pubkey = 1;
+message ServerKeyResponse {
+  bytes pubkey = 1;
 }
-
-message UnsealStartResponse {
-  bytes server_pubkey = 1;
-}
-message UnsealEncryptedKey {
-  bytes nonce = 1;
-  bytes ciphertext = 2;
-  bytes associated_data = 3;
-}
-
-enum UnsealResult {
-  UNSEAL_RESULT_UNSPECIFIED = 0;
-  UNSEAL_RESULT_SUCCESS = 1;
-  UNSEAL_RESULT_INVALID_KEY = 2;
-  UNSEAL_RESULT_UNBOOTSTRAPPED = 3;
+message UserAgentSealedKey {
+  bytes sealed_key = 1;
+  bytes pubkey = 2;
+  bytes nonce = 3;
 }
--- a/protobufs/user_agent.proto
+++ b/protobufs/user_agent.proto
@@ -1,21 +0,0 @@
-syntax = "proto3";
-
-package arbiter;
-
-import "auth.proto";
-import "unseal.proto";
-
-message UserAgentRequest {
-  oneof payload {
-    arbiter.auth.ClientMessage auth_message = 1;
-    arbiter.unseal.UnsealStart unseal_start = 2;
-    arbiter.unseal.UnsealEncryptedKey unseal_encrypted_key = 3;
-  }
-}
-message UserAgentResponse {
-  oneof payload {
-    arbiter.auth.ServerMessage auth_message = 1;
-    arbiter.unseal.UnsealStartResponse unseal_start_response = 2;
-    arbiter.unseal.UnsealResult unseal_result = 3;
-  }
-}
--- a/scripts/pycache/gen_erc20_registry.cpython-314.pyc
+++ b/scripts/pycache/gen_erc20_registry.cpython-314.pyc
--- a/server/Cargo.lock
+++ b/server/Cargo.lock
@@ -47,9 +47,9 @@ dependencies = [

 [[package]]
 name = "anyhow"
-version = "1.0.101"
+version = "1.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f0e0fee31ef5ed1ba1316088939cea399010ed7731dba877ed44aeb407a75ea"
+checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"

 [[package]]
 name = "arbiter-client"
@@ -63,6 +63,9 @@ dependencies = [
 "hex",
 "kameo",
 "prost",
+ "prost-build",
+ "prost-types",
+ "serde_json",
 "tokio",
 "tonic",
 "tonic-prost",
@@ -84,24 +87,21 @@ dependencies = [
 "diesel_migrations",
 "ed25519-dalek",
 "futures",
- "insta",
+ "hex",
 "kameo",
 "memsafe",
 "miette",
 "rand",
 "rcgen",
- "restructed",
 "rustls",
 "secrecy",
 "smlang",
- "strum",
 "test-log",
 "thiserror",
 "tokio",
 "tokio-stream",
 "tonic",
 "tracing",
- "tracing-subscriber",
 "x25519-dalek",
 "zeroize",
 ]
@@ -120,7 +120,6 @@ dependencies = [
 "blake2",
 "cpufeatures 0.2.17",
 "password-hash",
- "zeroize",
 ]

 [[package]]
@@ -147,7 +146,7 @@ checksum = "3109e49b1e4909e9db6515a30c633684d68cdeaa252f215214cb4fa1a5bfee2c"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 "synstructure",
 ]

@@ -159,7 +158,7 @@ checksum = "7b18050c2cd6fe86c3a76584ef5e0baf286d038cda203eb6223df2cc413565f7"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -170,7 +169,7 @@ checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -187,9 +186,9 @@ checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"

 [[package]]
 name = "aws-lc-rs"
-version = "1.15.4"
+version = "1.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b7b6141e96a8c160799cc2d5adecd5cbbe5054cb8c7c4af53da0f83bb7ad256"
+checksum = "94bffc006df10ac2a68c83692d734a465f8ee6c5b384d8545a636f81d858f4bf"
 dependencies = [
 "aws-lc-sys",
 "untrusted 0.7.1",
@@ -198,9 +197,9 @@ dependencies = [

 [[package]]
 name = "aws-lc-sys"
-version = "0.37.1"
+version = "0.38.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b092fe214090261288111db7a2b2c2118e5a7f30dc2569f1732c4069a6840549"
+checksum = "4321e568ed89bb5a7d291a7f37997c2c0df89809d7b6d12062c81ddb54aa782e"
 dependencies = [
 "cc",
 "cmake",
@@ -325,18 +324,18 @@ dependencies = [

 [[package]]
 name = "block-buffer"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96eb4cdd6cf1b31d671e9efe75c5d1ec614776856cefbe109ca373554a6d514f"
+checksum = "cdd35008169921d80bc60d3d0ab416eecb028c4cd653352907921d95084790be"
 dependencies = [
 "hybrid-array",
 ]

 [[package]]
 name = "bumpalo"
-version = "3.19.1"
+version = "3.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
+checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"

 [[package]]
 name = "bytes"
@@ -399,9 +398,9 @@ dependencies = [

 [[package]]
 name = "chrono"
-version = "0.4.43"
+version = "0.4.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fac4744fb15ae8337dc853fee7fb3f4e48c0fbaa23d0afe49c447b4fab126118"
+checksum = "c673075a2e0e5f4a1dde27ce9dee1ea4558c7ffe648f576438a20ca1d2acc4b0"
 dependencies = [
 "iana-time-zone",
 "js-sys",
@@ -431,18 +430,6 @@ dependencies = [
 "cc",
 ]

-[[package]]
-name = "console"
-version = "0.15.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "054ccb5b10f9f2cbf51eb355ca1d05c2d279ce1804688d0db74b4733a5aeafd8"
-dependencies = [
- "encode_unicode",
- "libc",
- "once_cell",
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -495,9 +482,9 @@ dependencies = [

 [[package]]
 name = "crypto-common"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "211f05e03c7d03754740fd9e585de910a095d6b99f8bcfffdef8319fa02a8331"
+checksum = "77727bb15fa921304124b128af125e7e3b968275d1b108b379190264f4423710"
 dependencies = [
 "hybrid-array",
 ]
@@ -526,7 +513,7 @@ dependencies = [
 "cfg-if",
 "cpufeatures 0.2.17",
 "curve25519-dalek-derive",
- "digest 0.11.0",
+ "digest 0.11.1",
 "fiat-crypto 0.3.0",
 "rustc_version",
 "subtle",
@@ -541,7 +528,7 @@ checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -565,7 +552,7 @@ dependencies = [
 "proc-macro2",
 "quote",
 "strsim",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -576,7 +563,7 @@ checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
 dependencies = [
 "darling_core",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -615,9 +602,9 @@ dependencies = [

 [[package]]
 name = "deranged"
-version = "0.5.6"
+version = "0.5.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc3dc5ad92c2e2d1c193bbbbdf2ea477cb81331de4f3103f267ca18368b988c4"
+checksum = "7cd812cc2bc1d69d4764bd80df88b4317eaef9e773c75226407d9bc0876b211c"
 dependencies = [
 "powerfmt",
 ]
@@ -663,7 +650,7 @@ dependencies = [
 "dsl_auto_type",
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -683,7 +670,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe2444076b48641147115697648dc743c2c00b61adade0f01ce67133c7babe8c"
 dependencies = [
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -699,12 +686,12 @@ dependencies = [

 [[package]]
 name = "digest"
-version = "0.11.0"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8bf3682cdec91817be507e4aa104314898b95b84d74f3d43882210101a545b6"
+checksum = "285743a676ccb6b3e116bc14cc69319b957867930ae9c4822f8e0f54509d7243"
 dependencies = [
- "block-buffer 0.11.0",
- "crypto-common 0.2.0",
+ "block-buffer 0.12.0",
+ "crypto-common 0.2.1",
 ]

 [[package]]
@@ -715,7 +702,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -735,7 +722,7 @@ dependencies = [
 "heck",
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -779,12 +766,6 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"

-[[package]]
-name = "encode_unicode"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34aa73646ffb006b8f5147f3dc182bd4bcb190227ce861fc4a4844bf8e3cb2c0"
-
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -921,7 +902,7 @@ checksum = "e835b70203e41293343137df5c0664546da5745f82ec9b84d40be8336958447b"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -982,19 +963,19 @@ checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
 dependencies = [
 "cfg-if",
 "libc",
- "r-efi",
+ "r-efi 5.3.0",
 "wasip2",
 ]

 [[package]]
 name = "getrandom"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "139ef39800118c7683f2fd3c98c1b23c09ae076556b435f8e9064ae108aaeeec"
+checksum = "0de51e6874e94e7bf76d726fc5d13ba782deca734ff60d5bb2fb2607c7406555"
 dependencies = [
 "cfg-if",
 "libc",
- "r-efi",
+ "r-efi 6.0.0",
 "rand_core 0.10.0",
 "wasip2",
 "wasip3",
@@ -1108,9 +1089,9 @@ checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"

 [[package]]
 name = "hybrid-array"
-version = "0.4.7"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1b229d73f5803b562cc26e4da0396c8610a4ee209f4fac8fa4f8d709166dc45"
+checksum = "8655f91cd07f2b9d0c24137bd650fe69617773435ee5ec83022377777ce65ef1"
 dependencies = [
 "typenum",
 ]
@@ -1228,18 +1209,6 @@ dependencies = [
 "generic-array",
 ]

-[[package]]
-name = "insta"
-version = "1.46.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e82db8c87c7f1ccecb34ce0c24399b8a73081427f3c7c50a5d597925356115e4"
-dependencies = [
- "console",
- "once_cell",
- "similar",
- "tempfile",
-]
-
 [[package]]
 name = "is_ci"
 version = "1.2.0"
@@ -1273,9 +1242,9 @@ dependencies = [

 [[package]]
 name = "js-sys"
-version = "0.3.85"
+version = "0.3.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c942ebf8e95485ca0d52d97da7c5a2c387d0e7f0ba4c35e93bfcaee045955b3"
+checksum = "b49715b7073f385ba4bc528e5747d02e66cb39c6146efb66b781f131f0fb399c"
 dependencies = [
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 "wasm-bindgen",
@@ -1305,7 +1274,7 @@ dependencies = [
 "heck",
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -1322,9 +1291,9 @@ checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"

 [[package]]
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-checksum = "6800badb6cb2082ffd7b6a67e6125bb39f18782f793520caee8cb8846be06112"
+checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"

 [[package]]
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@@ -1338,9 +1307,9 @@ dependencies = [

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+version = "0.12.1"
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+checksum = "32a66949e030da00e8c7d4434b251670a91556f4144941d37452769c25d58a53"

 [[package]]
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@@ -1416,7 +1385,7 @@ checksum = "db5b29714e950dbb20d5e6f74f9dcec4edbcc1067bb7f8ed198c097b8c1a818b"
 dependencies = [
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 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -1489,15 +1458,6 @@ dependencies = [
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-[[package]]
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-]
-
 [[package]]
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@@ -1564,9 +1524,9 @@ checksum = "c08d65885ee38876c4f86fa503fb49d7b507c2b62552df7c70b2fce627e06381"

 [[package]]
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-checksum = "9c6901729fa79e91a0913333229e9ca5dc725089d1c363b2f4b4760709dc4a52"
+checksum = "d211803b9b6b570f68772237e415a029d5a50c65d382910b879fb19d3271f94d"

 [[package]]
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@@ -1631,29 +1591,29 @@ dependencies = [

 [[package]]
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+version = "1.1.11"
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+checksum = "f1749c7ed4bcaf4c3d0a3efc28538844fb29bcdd7d2b67b2be7e20ba861ff517"
 dependencies = [
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 ]

 [[package]]
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+checksum = "d9b20ed30f105399776b9c883e68e536ef602a16ae6f596d2c473591d6ad64c6"
 dependencies = [
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 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
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+checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"

 [[package]]
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@@ -1697,31 +1657,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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- "syn 2.0.115",
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-
-[[package]]
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-dependencies = [
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- "proc-macro2",
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- "syn 1.0.109",
- "version_check",
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-
-[[package]]
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-dependencies = [
- "proc-macro2",
- "quote",
- "version_check",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -1760,7 +1696,7 @@ dependencies = [
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 "pulldown-cmark-to-cmark",
 "regex",
- "syn 2.0.115",
+ "syn 2.0.117",
 "tempfile",
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@@ -1774,7 +1710,7 @@ dependencies = [
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 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -1783,14 +1719,15 @@ version = "0.14.3"
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 checksum = "8991c4cbdb8bc5b11f0b074ffe286c30e523de90fee5ba8132f1399f23cb3dd7"
 dependencies = [
+ "chrono",
 "prost",
 ]

 [[package]]
 name = "pulldown-cmark"
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+version = "0.13.1"
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-checksum = "1e8bbe1a966bd2f362681a44f6edce3c2310ac21e4d5067a6e7ec396297a6ea0"
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 dependencies = [
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 "memchr",
@@ -1808,9 +1745,9 @@ dependencies = [

 [[package]]
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+version = "1.0.45"
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+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
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@@ -1821,6 +1758,12 @@ version = "5.3.0"
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 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"

+[[package]]
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+checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
+
 [[package]]
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@@ -1828,7 +1771,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 dependencies = [
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- "getrandom 0.4.1",
+ "getrandom 0.4.2",
 "rand_core 0.10.0",
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@@ -1896,21 +1839,9 @@ dependencies = [

 [[package]]
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-version = "0.8.9"
+version = "0.8.10"
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-
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-dependencies = [
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- "proc-macro2",
- "quote",
- "syn 2.0.115",
-]
+checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"

 [[package]]
 name = "ring"
@@ -1962,9 +1893,9 @@ dependencies = [

 [[package]]
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+version = "1.1.4"
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+checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
 dependencies = [
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 "errno",
@@ -1975,9 +1906,9 @@ dependencies = [

 [[package]]
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+version = "0.23.37"
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 dependencies = [
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@@ -2072,7 +2003,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -2105,7 +2036,7 @@ checksum = "7c5f3b1e2dc8aad28310d8410bd4d7e180eca65fca176c52ab00d364475d0024"
 dependencies = [
 "cfg-if",
 "cpufeatures 0.2.17",
- "digest 0.11.0",
+ "digest 0.11.1",
 ]

 [[package]]
@@ -2145,12 +2076,6 @@ version = "0.3.8"
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-[[package]]
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-
 [[package]]
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@@ -2186,12 +2111,12 @@ dependencies = [

 [[package]]
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+version = "0.6.3"
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 dependencies = [
 "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -2218,27 +2143,6 @@ version = "0.11.1"
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-[[package]]
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-dependencies = [
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-]
-
-[[package]]
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- "proc-macro2",
- "quote",
- "syn 2.0.115",
-]
-
 [[package]]
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@@ -2279,9 +2183,9 @@ dependencies = [

 [[package]]
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-version = "2.0.115"
+version = "2.0.117"
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+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
 dependencies = [
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@@ -2302,17 +2206,17 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
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 [[package]]
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+version = "3.27.0"
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-checksum = "0136791f7c95b1f6dd99f9cc786b91bb81c3800b639b3478e561ddb7be95e5f1"
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 dependencies = [
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- "getrandom 0.4.1",
+ "getrandom 0.4.2",
 "once_cell",
 "rustix",
 "windows-sys 0.61.2",
@@ -2346,7 +2250,7 @@ checksum = "be35209fd0781c5401458ab66e4f98accf63553e8fae7425503e92fdd319783b"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -2376,7 +2280,7 @@ checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
 dependencies = [
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 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -2421,9 +2325,9 @@ dependencies = [

 [[package]]
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-version = "1.49.0"
+version = "1.50.0"
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+checksum = "27ad5e34374e03cfffefc301becb44e9dc3c17584f414349ebe29ed26661822d"
 dependencies = [
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@@ -2439,13 +2343,13 @@ dependencies = [

 [[package]]
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+version = "2.6.1"
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 dependencies = [
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 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
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 [[package]]
@@ -2507,18 +2411,18 @@ dependencies = [

 [[package]]
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+version = "1.0.9+spec-1.1.0"
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+checksum = "702d4415e08923e7e1ef96cd5727c0dfed80b4d2fa25db9647fe5eb6f7c5a4c4"
 dependencies = [
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 [[package]]
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+checksum = "fec7c61a0695dc1887c1b53952990f3ad2e3a31453e1f49f10e75424943a93ec"
 dependencies = [
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@@ -2548,21 +2452,21 @@ dependencies = [

 [[package]]
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+version = "0.14.5"
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+checksum = "1882ac3bf5ef12877d7ed57aad87e75154c11931c2ba7e6cde5e22d63522c734"
 dependencies = [
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+ "syn 2.0.117",
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 [[package]]
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+version = "0.14.5"
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+checksum = "a55376a0bbaa4975a3f10d009ad763d8f4108f067c7c2e74f3001fb49778d309"
 dependencies = [
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@@ -2571,16 +2475,16 @@ dependencies = [

 [[package]]
 name = "tonic-prost-build"
-version = "0.14.4"
+version = "0.14.5"
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 dependencies = [
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 "prost-build",
 "prost-types",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 "tempfile",
 "tonic-build",
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@@ -2635,7 +2539,7 @@ checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -2645,18 +2549,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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- "valuable",
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-
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "log",
- "once_cell",
- "tracing-core",
 ]

 [[package]]
@@ -2666,15 +2558,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 "regex-automata",
 "sharded-slab",
- "smallvec",
 "thread_local",
 "tracing",
 "tracing-core",
- "tracing-log",
 ]

 [[package]]
@@ -2697,9 +2586,9 @@ checksum = "dbc4bc3a9f746d862c45cb89d705aa10f187bb96c76001afab07a0d35ce60142"

 [[package]]
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+version = "1.0.24"
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+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"

 [[package]]
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@@ -2749,20 +2638,14 @@ checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"

 [[package]]
 name = "uuid"
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+version = "1.22.0"
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-checksum = "b672338555252d43fd2240c714dc444b8c6fb0a5c5335e65a07bba7742735ddb"
+checksum = "a68d3c8f01c0cfa54a75291d83601161799e4a89a39e0929f4b0354d88757a37"
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-
 [[package]]
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@@ -2810,9 +2693,9 @@ dependencies = [

 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64024a30ec1e37399cf85a7ffefebdb72205ca1c972291c51512360d90bd8566"
+checksum = "6532f9a5c1ece3798cb1c2cfdba640b9b3ba884f5db45973a6f442510a87d38e"
 dependencies = [
 "cfg-if",
 "once_cell",
@@ -2823,9 +2706,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.108"
+version = "0.2.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "008b239d9c740232e71bd39e8ef6429d27097518b6b30bdf9086833bd5b6d608"
+checksum = "18a2d50fcf105fb33bb15f00e7a77b772945a2ee45dcf454961fd843e74c18e6"
 dependencies = [
 "quote",
 "wasm-bindgen-macro-support",
@@ -2833,22 +2716,22 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.108"
+version = "0.2.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5256bae2d58f54820e6490f9839c49780dff84c65aeab9e772f15d5f0e913a55"
+checksum = "03ce4caeaac547cdf713d280eda22a730824dd11e6b8c3ca9e42247b25c631e3"
 dependencies = [
 "bumpalo",
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 "wasm-bindgen-shared",
 ]

 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.108"
+version = "0.2.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f01b580c9ac74c8d8f0c0e4afb04eeef2acf145458e52c03845ee9cd23e3d12"
+checksum = "75a326b8c223ee17883a4251907455a2431acc2791c98c26279376490c378c16"
 dependencies = [
 "unicode-ident",
 ]
@@ -2930,7 +2813,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -2941,7 +2824,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
@@ -2977,15 +2860,6 @@ dependencies = [
 "windows-targets 0.52.6",
 ]

-[[package]]
-name = "windows-sys"
-version = "0.59.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
-dependencies = [
- "windows-targets 0.52.6",
-]
-
 [[package]]
 name = "windows-sys"
 version = "0.60.2"
@@ -3135,9 +3009,9 @@ checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"

 [[package]]
 name = "winnow"
-version = "0.7.14"
+version = "0.7.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
+checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"

 [[package]]
 name = "wit-bindgen"
@@ -3169,7 +3043,7 @@ dependencies = [
 "heck",
 "indexmap",
 "prettyplease",
- "syn 2.0.115",
+ "syn 2.0.117",
 "wasm-metadata",
 "wit-bindgen-core",
 "wit-component",
@@ -3185,7 +3059,7 @@ dependencies = [
 "prettyplease",
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 "wit-bindgen-core",
 "wit-bindgen-rust",
 ]
@@ -3283,7 +3157,7 @@ checksum = "85a5b4158499876c763cb03bc4e49185d3cccbabb15b33c627f7884f43db852e"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn 2.0.115",
+ "syn 2.0.117",
 ]

 [[package]]
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -23,3 +23,4 @@ async-trait = "0.1.89"
 futures = "0.3.31"
 tokio-stream = { version = "0.1.18", features = ["full"] }
 kameo = "0.19.2"
+prost-types = { version = "0.14.3", features = ["chrono"] }
--- a/server/crates/.DS_Store
+++ b/server/crates/.DS_Store
--- a/server/crates/arbiter-proto/Cargo.toml
+++ b/server/crates/arbiter-proto/Cargo.toml
@@ -12,8 +12,11 @@ hex = "0.4.3"
 tonic-prost = "0.14.3"
 prost = "0.14.3"
 kameo.workspace = true
+prost-types.workspace = true

 [build-dependencies]
+prost-build = "0.14.3"
+serde_json = "1"
 tonic-prost-build = "0.14.3"


--- a/server/crates/arbiter-proto/build.rs
+++ b/server/crates/arbiter-proto/build.rs
@@ -1,21 +1,15 @@
-use tonic_prost_build::configure;
-
 static PROTOBUF_DIR: &str = "../../../protobufs";

 fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let proto_files = vec![
+        format!("{}/arbiter.proto", PROTOBUF_DIR),
+        format!("{}/auth.proto", PROTOBUF_DIR),
+    ];

-    println!("cargo::rerun-if-changed={PROTOBUF_DIR}");
-
-    configure()
+    // Компилируем protobuf (tonic-prost-build автоматически использует prost_types для google.protobuf)
+    tonic_prost_build::configure()
        .message_attribute(".", "#[derive(::kameo::Reply)]")
-        .compile_protos(
-            &[
-                format!("{}/arbiter.proto", PROTOBUF_DIR),
-                format!("{}/auth.proto", PROTOBUF_DIR),
-            ],
-            &[PROTOBUF_DIR.to_string()],
-        )
+        .compile_protos(&proto_files, &[PROTOBUF_DIR.to_string()])?;

-        .unwrap();
    Ok(())
 }
--- a/server/crates/arbiter-proto/src/lib.rs
+++ b/server/crates/arbiter-proto/src/lib.rs
@@ -6,17 +6,14 @@ pub mod proto {
    pub mod auth {
        tonic::include_proto!("arbiter.auth");
    }
-    pub mod unseal {
-        tonic::include_proto!("arbiter.unseal");
-    }
 }

 pub mod transport;

-pub static BOOTSTRAP_TOKEN_PATH: &'static str = "bootstrap_token";
+pub static BOOTSTRAP_TOKEN_PATH: &str = "bootstrap_token";

 pub fn home_path() -> Result<std::path::PathBuf, std::io::Error> {
-    static ARBITER_HOME: &'static str = ".arbiter";
+    static ARBITER_HOME: &str = ".arbiter";
    let home_dir = std::env::home_dir().ok_or(std::io::Error::new(
        std::io::ErrorKind::PermissionDenied,
        "can not get home directory",
--- a/server/crates/arbiter-server/.DS_Store
+++ b/server/crates/arbiter-server/.DS_Store
--- a/server/crates/arbiter-server/Cargo.toml
+++ b/server/crates/arbiter-server/Cargo.toml
@@ -5,7 +5,13 @@ edition = "2024"
 repository = "https://git.markettakers.org/MarketTakers/arbiter"

 [dependencies]
-diesel = { version = "2.3.6", features = ["chrono", "returning_clauses_for_sqlite_3_35", "serde_json", "time", "uuid"] }
+diesel = { version = "2.3.6", features = [
+    "sqlite",
+    "uuid",
+    "time",
+    "chrono",
+    "serde_json",
+] }
 diesel-async = { version = "0.7.4", features = [
    "bb8",
    "migrations",
@@ -15,7 +21,6 @@ diesel-async = { version = "0.7.4", features = [
 ed25519-dalek.workspace = true
 arbiter-proto.path = "../arbiter-proto"
 tracing.workspace = true
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 tonic.workspace = true
 tokio.workspace = true
 rustls.workspace = true
@@ -38,13 +43,11 @@ rcgen = { version = "0.14.7", features = [
 chrono.workspace = true
 memsafe = "0.4.0"
 zeroize = { version = "1.8.2", features = ["std", "simd"] }
+argon2 = { version = "0.5", features = ["std"] }
 kameo.workspace = true
-x25519-dalek = { version = "2.0.1", features = ["getrandom"] }
-chacha20poly1305 = { version = "0.10.1", features = ["std"] }
-argon2 = { version = "0.5.3", features = ["zeroize"] }
-restructed = "0.2.2"
-strum = { version = "0.27.2", features = ["derive"] }
+hex = "0.4.3"
+chacha20poly1305 = "0.10.1"
+x25519-dalek = { version = "2.0", features = ["static_secrets"] }

 [dev-dependencies]
-insta = "1.46.3"
 test-log = { version = "0.2", default-features = false, features = ["trace"] }
--- a/server/crates/arbiter-server/migrations/2026-02-13-155546-0000_add_tls_rotation/down.sql
+++ b/server/crates/arbiter-server/migrations/2026-02-13-155546-0000_add_tls_rotation/down.sql
@@ -0,0 +1,11 @@
+-- Rollback TLS rotation tables
+
+-- Удалить добавленную колонку из arbiter_settings
+ALTER TABLE arbiter_settings DROP COLUMN current_cert_id;
+
+-- Удалить таблицы в обратном порядке
+DROP TABLE IF EXISTS tls_rotation_history;
+DROP TABLE IF EXISTS rotation_client_acks;
+DROP TABLE IF EXISTS tls_rotation_state;
+DROP INDEX IF EXISTS idx_tls_certificates_active;
+DROP TABLE IF EXISTS tls_certificates;
--- a/server/crates/arbiter-server/migrations/2026-02-13-155546-0000_add_tls_rotation/up.sql
+++ b/server/crates/arbiter-server/migrations/2026-02-13-155546-0000_add_tls_rotation/up.sql
@@ -0,0 +1,57 @@
+-- История всех сертификатов
+CREATE TABLE IF NOT EXISTS tls_certificates (
+    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    cert BLOB NOT NULL,              -- DER-encoded
+    cert_key BLOB NOT NULL,          -- PEM-encoded
+    not_before INTEGER NOT NULL,     -- Unix timestamp
+    not_after INTEGER NOT NULL,      -- Unix timestamp
+    created_at INTEGER NOT NULL DEFAULT(unixepoch('now')),
+    is_active BOOLEAN NOT NULL DEFAULT 0  -- Только один active=1
+) STRICT;
+
+CREATE INDEX idx_tls_certificates_active ON tls_certificates(is_active, not_after);
+
+-- Tracking процесса ротации
+CREATE TABLE IF NOT EXISTS tls_rotation_state (
+    id INTEGER NOT NULL PRIMARY KEY CHECK(id = 1),  -- Singleton
+    state TEXT NOT NULL DEFAULT('normal') CHECK(state IN ('normal', 'initiated', 'waiting_acks', 'ready')),
+    new_cert_id INTEGER REFERENCES tls_certificates(id),
+    initiated_at INTEGER,
+    timeout_at INTEGER  -- Таймаут для ожидания ACKs (initiated_at + 7 дней)
+) STRICT;
+
+-- Tracking ACKs от клиентов
+CREATE TABLE IF NOT EXISTS rotation_client_acks (
+    rotation_id INTEGER NOT NULL,    -- Ссылка на new_cert_id
+    client_key TEXT NOT NULL,        -- Публичный ключ клиента (hex)
+    ack_received_at INTEGER NOT NULL DEFAULT(unixepoch('now')),
+    PRIMARY KEY (rotation_id, client_key)
+) STRICT;
+
+-- Audit trail событий ротации
+CREATE TABLE IF NOT EXISTS tls_rotation_history (
+    id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    cert_id INTEGER NOT NULL REFERENCES tls_certificates(id),
+    event_type TEXT NOT NULL CHECK(event_type IN ('created', 'rotation_initiated', 'acks_complete', 'activated', 'timeout')),
+    timestamp INTEGER NOT NULL DEFAULT(unixepoch('now')),
+    details TEXT  -- JSON с доп. информацией
+) STRICT;
+
+-- Миграция существующего сертификата
+INSERT INTO tls_certificates (id, cert, cert_key, not_before, not_after, is_active, created_at)
+SELECT
+    1,
+    cert,
+    cert_key,
+    unixepoch('now') as not_before,
+    unixepoch('now') + (90 * 24 * 60 * 60) as not_after,  -- 90 дней
+    1 as is_active,
+    unixepoch('now')
+FROM arbiter_settings WHERE id = 1;
+
+-- Инициализация rotation_state
+INSERT INTO tls_rotation_state (id, state) VALUES (1, 'normal');
+
+-- Добавить ссылку на текущий сертификат
+ALTER TABLE arbiter_settings ADD COLUMN current_cert_id INTEGER REFERENCES tls_certificates(id);
+UPDATE arbiter_settings SET current_cert_id = 1 WHERE id = 1;
--- a/server/crates/arbiter-server/migrations/2026-02-14-171124-0000_init/up.sql
+++ b/server/crates/arbiter-server/migrations/2026-02-14-171124-0000_init/up.sql
@@ -1,40 +1,22 @@
-create table if not exists root_key_history (
-    id INTEGER not null PRIMARY KEY,
-    -- root key stored as aead encrypted artifact, with only difference that it's decrypted by unseal key (derived from user password)
-    root_key_encryption_nonce blob not null default(1), -- if re-encrypted, this should be incremented. Used for encrypting root key
-    data_encryption_nonce blob not null default(1), -- nonce used for encrypting with key itself
-    ciphertext blob not null,
-    tag blob not null,
-    schema_version integer not null default(1), -- server would need to reencrypt, because this means that we have changed algorithm
-    salt blob not null -- for key deriviation 
-) STRICT;
-
 create table if not exists aead_encrypted (
    id INTEGER not null PRIMARY KEY,
-    current_nonce blob not null default(1), -- if re-encrypted, this should be incremented
+    current_nonce integer not null default(1), -- if re-encrypted, this should be incremented
    ciphertext blob not null,
    tag blob not null,
-    schema_version integer not null default(1), -- server would need to reencrypt, because this means that we have changed algorithm
-    associated_root_key_id integer not null references root_key_history (id) on delete RESTRICT,
-    created_at integer not null default(unixepoch ('now'))
+    schema_version integer not null default(1) -- server would need to reencrypt, because this means that we have changed algorithm
 ) STRICT;

-create unique index if not exists uniq_nonce_per_root_key on aead_encrypted (
-    current_nonce,
-    associated_root_key_id
-);
-
 -- This is a singleton
 create table if not exists arbiter_settings (
    id INTEGER not null PRIMARY KEY CHECK (id = 1), -- singleton row, id must be 1
-    root_key_id integer references root_key_history (id) on delete RESTRICT, -- if null, means wasn't bootstrapped yet
+    root_key_id integer references aead_encrypted (id) on delete RESTRICT, -- if null, means wasn't bootstrapped yet
    cert_key blob not null,
    cert blob not null
 ) STRICT;

 create table if not exists useragent_client (
    id integer not null primary key,
-    nonce integer not null default(1), -- used for auth challenge
+    nonce integer not null default (1), -- used for auth challenge
    public_key blob not null,
    created_at integer not null default(unixepoch ('now')),
    updated_at integer not null default(unixepoch ('now'))
@@ -42,7 +24,7 @@ create table if not exists useragent_client (

 create table if not exists program_client (
    id integer not null primary key,
-    nonce integer not null default(1), -- used for auth challenge
+    nonce integer not null default (1), -- used for auth challenge
    public_key blob not null,
    created_at integer not null default(unixepoch ('now')),
    updated_at integer not null default(unixepoch ('now'))
--- a/server/crates/arbiter-server/migrations/2026-02-16-160000-0000_add_argon2_salt/down.sql
+++ b/server/crates/arbiter-server/migrations/2026-02-16-160000-0000_add_argon2_salt/down.sql
@@ -0,0 +1,2 @@
+-- Remove argon2_salt column
+ALTER TABLE aead_encrypted DROP COLUMN argon2_salt;
--- a/server/crates/arbiter-server/migrations/2026-02-16-160000-0000_add_argon2_salt/up.sql
+++ b/server/crates/arbiter-server/migrations/2026-02-16-160000-0000_add_argon2_salt/up.sql
@@ -0,0 +1,2 @@
+-- Add argon2_salt column to store password derivation salt
+ALTER TABLE aead_encrypted ADD COLUMN argon2_salt TEXT;
--- a/server/crates/arbiter-server/src/.DS_Store
+++ b/server/crates/arbiter-server/src/.DS_Store
--- a/server/crates/arbiter-server/src/actors.rs
+++ b/server/crates/arbiter-server/src/actors.rs
@@ -1,4 +1,2 @@
 pub mod user_agent;
 pub mod client;
-pub(crate) mod bootstrap;
-pub(crate) mod keyholder;
--- a/server/crates/arbiter-server/src/actors/keyholder.rs
+++ b/server/crates/arbiter-server/src/actors/keyholder.rs
@@ -1,939 +0,0 @@
-use diesel::{
-    ExpressionMethods as _, OptionalExtension, QueryDsl, SelectableHelper,
-    dsl::{insert_into, update},
-};
-use diesel_async::{AsyncConnection, RunQueryDsl};
-use kameo::{Actor, Reply, messages};
-use memsafe::MemSafe;
-use strum::{EnumDiscriminants, IntoDiscriminant};
-use tracing::{error, info};
-
-use crate::{
-    actors::keyholder::v1::{KeyCell, Nonce},
-    db::{
-        self,
-        models::{self, RootKeyHistory},
-        schema::{self},
-    },
-};
-
-pub mod v1;
-
-#[derive(Default, EnumDiscriminants)]
-#[strum_discriminants(derive(Reply), vis(pub))]
-enum State {
-    #[default]
-    Unbootstrapped,
-    Sealed {
-        root_key_history_id: i32,
-    },
-    Unsealed {
-        root_key_history_id: i32,
-        root_key: KeyCell,
-    },
-}
-
-#[derive(Debug, thiserror::Error, miette::Diagnostic)]
-pub enum Error {
-    #[error("Keyholder is already bootstrapped")]
-    #[diagnostic(code(arbiter::keyholder::already_bootstrapped))]
-    AlreadyBootstrapped,
-    #[error("Keyholder is not bootstrapped")]
-    #[diagnostic(code(arbiter::keyholder::not_bootstrapped))]
-    NotBootstrapped,
-    #[error("Invalid key provided")]
-    #[diagnostic(code(arbiter::keyholder::invalid_key))]
-    InvalidKey,
-
-    #[error("Requested aead entry not found")]
-    #[diagnostic(code(arbiter::keyholder::aead_not_found))]
-    NotFound,
-
-    #[error("Encryption error: {0}")]
-    #[diagnostic(code(arbiter::keyholder::encryption_error))]
-    Encryption(#[from] chacha20poly1305::aead::Error),
-
-    #[error("Database error: {0}")]
-    #[diagnostic(code(arbiter::keyholder::database_error))]
-    DatabaseConnection(#[from] db::PoolError),
-
-    #[error("Database transaction error: {0}")]
-    #[diagnostic(code(arbiter::keyholder::database_transaction_error))]
-    DatabaseTransaction(#[from] diesel::result::Error),
-
-    #[error("Broken database")]
-    #[diagnostic(code(arbiter::keyholder::broken_database))]
-    BrokenDatabase,
-}
-
-/// Manages vault root key and tracks current state of the vault (bootstrapped/unbootstrapped, sealed/unsealed).
-/// Provides API for encrypting and decrypting data using the vault root key.
-/// Abstraction over database to make sure nonces are never reused and encryption keys are never exposed in plaintext outside of this actor.
-#[derive(Actor)]
-pub struct KeyHolder {
-    db: db::DatabasePool,
-    state: State,
-}
-
-#[messages]
-impl KeyHolder {
-    pub async fn new(db: db::DatabasePool) -> Result<Self, Error> {
-        let state = {
-            let mut conn = db.get().await?;
-
-            let (root_key_history,) = schema::arbiter_settings::table
-                .left_join(schema::root_key_history::table)
-                .select((Option::<RootKeyHistory>::as_select(),))
-                .get_result::<(Option<RootKeyHistory>,)>(&mut conn)
-                .await?;
-
-            match root_key_history {
-                Some(root_key_history) => State::Sealed {
-                    root_key_history_id: root_key_history.id,
-                },
-                None => State::Unbootstrapped,
-            }
-        };
-
-        Ok(Self { db, state })
-    }
-
-    // Exclusive transaction to avoid race condtions if multiple keyholders write
-    // additional layer of protection against nonce-reuse
-    async fn get_new_nonce(pool: &db::DatabasePool, root_key_id: i32) -> Result<Nonce, Error> {
-        let mut conn = pool.get().await?;
-
-        let nonce = conn
-            .exclusive_transaction(|conn| {
-                Box::pin(async move {
-                    let current_nonce: Vec<u8> = schema::root_key_history::table
-                        .filter(schema::root_key_history::id.eq(root_key_id))
-                        .select(schema::root_key_history::data_encryption_nonce)
-                        .first(conn)
-                        .await?;
-
-                    let mut nonce =
-                        v1::Nonce::try_from(current_nonce.as_slice()).map_err(|_| {
-                            error!(
-                                "Broken database: invalid nonce for root key history id={}",
-                                root_key_id
-                            );
-                            Error::BrokenDatabase
-                        })?;
-                    nonce.increment();
-
-                    update(schema::root_key_history::table)
-                        .filter(schema::root_key_history::id.eq(root_key_id))
-                        .set(schema::root_key_history::data_encryption_nonce.eq(nonce.to_vec()))
-                        .execute(conn)
-                        .await?;
-
-                    Result::<_, Error>::Ok(nonce)
-                })
-            })
-            .await?;
-
-        Ok(nonce)
-    }
-
-    #[message]
-    pub async fn bootstrap(&mut self, seal_key_raw: MemSafe<Vec<u8>>) -> Result<(), Error> {
-        if !matches!(self.state, State::Unbootstrapped) {
-            return Err(Error::AlreadyBootstrapped);
-        }
-        let salt = v1::generate_salt();
-        let mut seal_key = v1::derive_seal_key(seal_key_raw, &salt);
-        let mut root_key = KeyCell::new_secure_random();
-
-        // Zero nonces are fine because they are one-time
-        let root_key_nonce = v1::Nonce::default();
-        let data_encryption_nonce = v1::Nonce::default();
-
-        let root_key_ciphertext: Vec<u8> = {
-            let root_key_reader = root_key.0.read().unwrap();
-            let root_key_reader = root_key_reader.as_slice();
-            seal_key
-                .encrypt(&root_key_nonce, v1::ROOT_KEY_TAG, root_key_reader)
-                .map_err(|err| {
-                    error!(?err, "Fatal bootstrap error");
-                    Error::Encryption(err)
-                })?
-        };
-
-        let mut conn = self.db.get().await?;
-
-        let data_encryption_nonce_bytes = data_encryption_nonce.to_vec();
-        let root_key_history_id = conn
-            .transaction(|conn| {
-                Box::pin(async move {
-                    let root_key_history_id: i32 = insert_into(schema::root_key_history::table)
-                        .values(&models::NewRootKeyHistory {
-                            ciphertext: root_key_ciphertext,
-                            tag: v1::ROOT_KEY_TAG.to_vec(),
-                            root_key_encryption_nonce: root_key_nonce.to_vec(),
-                            data_encryption_nonce: data_encryption_nonce_bytes,
-                            schema_version: 1,
-                            salt: salt.to_vec(),
-                        })
-                        .returning(schema::root_key_history::id)
-                        .get_result(conn)
-                        .await?;
-
-                    update(schema::arbiter_settings::table)
-                        .set(schema::arbiter_settings::root_key_id.eq(root_key_history_id))
-                        .execute(conn)
-                        .await?;
-
-                    Result::<_, diesel::result::Error>::Ok(root_key_history_id)
-                })
-            })
-            .await?;
-
-        self.state = State::Unsealed {
-            root_key,
-            root_key_history_id,
-        };
-
-        info!("Keyholder bootstrapped successfully");
-
-        Ok(())
-    }
-
-    #[message]
-    pub async fn try_unseal(&mut self, seal_key_raw: MemSafe<Vec<u8>>) -> Result<(), Error> {
-        let State::Sealed {
-            root_key_history_id,
-        } = &self.state
-        else {
-            return Err(Error::NotBootstrapped);
-        };
-
-        // We don't want to hold connection while doing expensive KDF work
-        let current_key = {
-            let mut conn = self.db.get().await?;
-            schema::root_key_history::table
-                .filter(schema::root_key_history::id.eq(*root_key_history_id))
-                .select(schema::root_key_history::data_encryption_nonce )
-                .select(RootKeyHistory::as_select() )
-                .first(&mut conn)
-                .await?
-        };
-
-        let salt = &current_key.salt;
-        let salt = v1::Salt::try_from(salt.as_slice()).map_err(|_| {
-            error!("Broken database: invalid salt for root key");
-            Error::BrokenDatabase
-        })?;
-        let mut seal_key = v1::derive_seal_key(seal_key_raw, &salt);
-
-        let mut root_key = MemSafe::new(current_key.ciphertext.clone()).unwrap();
-
-        let nonce = v1::Nonce::try_from(current_key.root_key_encryption_nonce.as_slice()).map_err(
-            |_| {
-                error!("Broken database: invalid nonce for root key");
-                Error::BrokenDatabase
-            },
-        )?;
-
-        seal_key
-            .decrypt_in_place(&nonce, v1::ROOT_KEY_TAG, &mut root_key)
-            .map_err(|err| {
-                error!(?err, "Failed to unseal root key: invalid seal key");
-                Error::InvalidKey
-            })?;
-
-        self.state = State::Unsealed {
-            root_key_history_id: current_key.id,
-            root_key: v1::KeyCell::try_from(root_key).map_err(|err| {
-                error!(?err, "Broken database: invalid encryption key size");
-                Error::BrokenDatabase
-            })?,
-        };
-
-        info!("Keyholder unsealed successfully");
-
-        Ok(())
-    }
-
-    // Decrypts the `aead_encrypted` entry with the given ID and returns the plaintext
-    #[message]
-    pub async fn decrypt(&mut self, aead_id: i32) -> Result<MemSafe<Vec<u8>>, Error> {
-        let State::Unsealed { root_key, .. } = &mut self.state else {
-            return Err(Error::NotBootstrapped);
-        };
-
-        let row: models::AeadEncrypted = {
-            let mut conn = self.db.get().await?;
-            schema::aead_encrypted::table
-                .select(models::AeadEncrypted::as_select())
-                .filter(schema::aead_encrypted::id.eq(aead_id))
-                .first(&mut conn)
-                .await
-                .optional()?
-                .ok_or(Error::NotFound)?
-        };
-
-        let nonce = v1::Nonce::try_from(row.current_nonce.as_slice()).map_err(|_| {
-            error!(
-                "Broken database: invalid nonce for aead_encrypted id={}",
-                aead_id
-            );
-            Error::BrokenDatabase
-        })?;
-        let mut output = MemSafe::new(row.ciphertext).unwrap();
-        root_key.decrypt_in_place(&nonce, v1::TAG, &mut output)?;
-        Ok(output)
-    }
-
-    // Creates new `aead_encrypted` entry in the database and returns it's ID
-    #[message]
-    pub async fn create_new(&mut self, mut plaintext: MemSafe<Vec<u8>>) -> Result<i32, Error> {
-        let State::Unsealed {
-            root_key,
-            root_key_history_id,
-        } = &mut self.state
-        else {
-            return Err(Error::NotBootstrapped);
-        };
-
-        // Order matters here - `get_new_nonce` acquires connection, so we need to call it before next acquire
-        // Borrow checker note: &mut borrow a few lines above is disjoint from this field
-        let nonce = Self::get_new_nonce(&self.db, *root_key_history_id).await?;
-
-        let mut ciphertext_buffer = plaintext.write().unwrap();
-        let ciphertext_buffer: &mut Vec<u8> = ciphertext_buffer.as_mut();
-        root_key.encrypt_in_place(&nonce, v1::TAG, &mut *ciphertext_buffer)?;
-
-        let ciphertext = std::mem::take(ciphertext_buffer);
-
-        let mut conn = self.db.get().await?;
-        let aead_id: i32 = insert_into(schema::aead_encrypted::table)
-            .values(&models::NewAeadEncrypted {
-                ciphertext,
-                tag: v1::TAG.to_vec(),
-                current_nonce: nonce.to_vec(),
-                schema_version: 1,
-                associated_root_key_id: *root_key_history_id,
-                created_at: chrono::Utc::now().timestamp() as i32,
-            })
-            .returning(schema::aead_encrypted::id)
-            .get_result(&mut conn)
-            .await?;
-
-        Ok(aead_id)
-    }
-
-    #[message]
-    pub fn get_state(&self) -> StateDiscriminants {
-        self.state.discriminant()
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use std::collections::{HashMap, HashSet};
-    use std::sync::Arc;
-
-    use diesel::dsl::{insert_into, sql_query, update};
-    use diesel_async::RunQueryDsl;
-    use futures::stream::TryUnfold;
-    use kameo::actor::{ActorRef, Spawn as _};
-    use memsafe::MemSafe;
-    use tokio::sync::Mutex;
-    use tokio::task::JoinSet;
-
-    use crate::db::{self, models::ArbiterSetting};
-
-    use super::*;
-
-    async fn seed_settings(pool: &db::DatabasePool) {
-        let mut conn = pool.get().await.unwrap();
-        insert_into(schema::arbiter_settings::table)
-            .values(&ArbiterSetting {
-                id: 1,
-                root_key_id: None,
-                cert_key: vec![],
-                cert: vec![],
-            })
-            .execute(&mut conn)
-            .await
-            .unwrap();
-    }
-
-    async fn bootstrapped_actor(db: &db::DatabasePool) -> KeyHolder {
-        seed_settings(db).await;
-        let mut actor = KeyHolder::new(db.clone()).await.unwrap();
-        let seal_key = MemSafe::new(b"test-seal-key".to_vec()).unwrap();
-        actor.bootstrap(seal_key).await.unwrap();
-        actor
-    }
-
-    async fn write_concurrently(
-        actor: ActorRef<KeyHolder>,
-        prefix: &'static str,
-        count: usize,
-    ) -> Vec<(i32, Vec<u8>)> {
-        let mut set = JoinSet::new();
-        for i in 0..count {
-            let actor = actor.clone();
-            set.spawn(async move {
-                let plaintext = format!("{prefix}-{i}").into_bytes();
-                let id = {
-                    actor
-                        .ask(CreateNew {
-                            plaintext: MemSafe::new(plaintext.clone()).unwrap(),
-                        })
-                        .await
-                        .unwrap()
-                };
-                (id, plaintext)
-            });
-        }
-
-        let mut out = Vec::with_capacity(count);
-        while let Some(res) = set.join_next().await {
-            out.push(res.unwrap());
-        }
-        out
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_bootstrap() {
-        let db = db::create_test_pool().await;
-        seed_settings(&db).await;
-        let mut actor = KeyHolder::new(db.clone()).await.unwrap();
-
-        assert!(matches!(actor.state, State::Unbootstrapped));
-
-        let seal_key = MemSafe::new(b"test-seal-key".to_vec()).unwrap();
-        actor.bootstrap(seal_key).await.unwrap();
-
-        assert!(matches!(actor.state, State::Unsealed { .. }));
-
-        let mut conn = db.get().await.unwrap();
-        let row: models::RootKeyHistory = schema::root_key_history::table
-            .select(models::RootKeyHistory::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-
-        assert_eq!(row.schema_version, 1);
-        assert_eq!(row.tag, v1::ROOT_KEY_TAG);
-        assert!(!row.ciphertext.is_empty());
-        assert!(!row.salt.is_empty());
-        assert_eq!(row.data_encryption_nonce, v1::Nonce::default().to_vec());
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_bootstrap_rejects_double() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let seal_key2 = MemSafe::new(b"test-seal-key".to_vec()).unwrap();
-        let err = actor.bootstrap(seal_key2).await.unwrap_err();
-        assert!(matches!(err, Error::AlreadyBootstrapped));
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_create_decrypt_roundtrip() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let plaintext = b"hello arbiter";
-        let aead_id = actor
-            .create_new(MemSafe::new(plaintext.to_vec()).unwrap())
-            .await
-            .unwrap();
-
-        let mut decrypted = actor.decrypt(aead_id).await.unwrap();
-        let decrypted = decrypted.read().unwrap();
-        assert_eq!(*decrypted, plaintext);
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_create_new_before_bootstrap_fails() {
-        let db = db::create_test_pool().await;
-        seed_settings(&db).await;
-        let mut actor = KeyHolder::new(db).await.unwrap();
-
-        let err = actor
-            .create_new(MemSafe::new(b"data".to_vec()).unwrap())
-            .await
-            .unwrap_err();
-        assert!(matches!(err, Error::NotBootstrapped));
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_decrypt_before_bootstrap_fails() {
-        let db = db::create_test_pool().await;
-        seed_settings(&db).await;
-        let mut actor = KeyHolder::new(db).await.unwrap();
-
-        let err = actor.decrypt(1).await.unwrap_err();
-        assert!(matches!(err, Error::NotBootstrapped));
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_decrypt_nonexistent_returns_not_found() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let err = actor.decrypt(9999).await.unwrap_err();
-        assert!(matches!(err, Error::NotFound));
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_new_restores_sealed_state() {
-        let db = db::create_test_pool().await;
-        let actor = bootstrapped_actor(&db).await;
-        drop(actor);
-
-        let actor2 = KeyHolder::new(db).await.unwrap();
-        assert!(matches!(actor2.state, State::Sealed { .. }));
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_nonce_never_reused() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let n = 5;
-        let mut ids = Vec::with_capacity(n);
-        for i in 0..n {
-            let id = actor
-                .create_new(MemSafe::new(format!("secret {i}").into_bytes()).unwrap())
-                .await
-                .unwrap();
-            ids.push(id);
-        }
-
-        // read all stored nonces from DB
-        let mut conn = db.get().await.unwrap();
-        let rows: Vec<models::AeadEncrypted> = schema::aead_encrypted::table
-            .select(models::AeadEncrypted::as_select())
-            .load(&mut conn)
-            .await
-            .unwrap();
-
-        assert_eq!(rows.len(), n);
-
-        let nonces: Vec<&Vec<u8>> = rows.iter().map(|r| &r.current_nonce).collect();
-        let unique: HashSet<&Vec<u8>> = nonces.iter().copied().collect();
-        assert_eq!(nonces.len(), unique.len(), "all nonces must be unique");
-
-        // verify nonces are sequential increments from 1
-        for (i, row) in rows.iter().enumerate() {
-            let mut expected = v1::Nonce::default();
-            for _ in 0..=i {
-                expected.increment();
-            }
-            assert_eq!(row.current_nonce, expected.to_vec(), "nonce {i} mismatch");
-        }
-
-        // verify data_encryption_nonce on root_key_history tracks the latest nonce
-        let root_row: models::RootKeyHistory = schema::root_key_history::table
-            .select(models::RootKeyHistory::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-        let last_nonce = &rows.last().unwrap().current_nonce;
-        assert_eq!(
-            &root_row.data_encryption_nonce, last_nonce,
-            "root_key_history must track the latest nonce"
-        );
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_unseal_correct_password() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let plaintext = b"survive a restart";
-        let aead_id = actor
-            .create_new(MemSafe::new(plaintext.to_vec()).unwrap())
-            .await
-            .unwrap();
-        drop(actor);
-
-        let mut actor = KeyHolder::new(db.clone()).await.unwrap();
-        assert!(matches!(actor.state, State::Sealed { .. }));
-
-        let seal_key = MemSafe::new(b"test-seal-key".to_vec()).unwrap();
-        actor.try_unseal(seal_key).await.unwrap();
-        assert!(matches!(actor.state, State::Unsealed { .. }));
-
-        // previously encrypted data is still decryptable
-        let mut decrypted = actor.decrypt(aead_id).await.unwrap();
-        assert_eq!(*decrypted.read().unwrap(), plaintext);
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_unseal_wrong_then_correct_password() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let plaintext = b"important data";
-        let aead_id = actor
-            .create_new(MemSafe::new(plaintext.to_vec()).unwrap())
-            .await
-            .unwrap();
-        drop(actor);
-
-        let mut actor = KeyHolder::new(db.clone()).await.unwrap();
-        assert!(matches!(actor.state, State::Sealed { .. }));
-
-        // wrong password
-        let bad_key = MemSafe::new(b"wrong-password".to_vec()).unwrap();
-        let err = actor.try_unseal(bad_key).await.unwrap_err();
-        assert!(matches!(err, Error::InvalidKey));
-        assert!(
-            matches!(actor.state, State::Sealed { .. }),
-            "state must remain Sealed after failed attempt"
-        );
-
-        // correct password
-        let good_key = MemSafe::new(b"test-seal-key".to_vec()).unwrap();
-        actor.try_unseal(good_key).await.unwrap();
-        assert!(matches!(actor.state, State::Unsealed { .. }));
-
-        let mut decrypted = actor.decrypt(aead_id).await.unwrap();
-        assert_eq!(*decrypted.read().unwrap(), plaintext);
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn test_ciphertext_differs_across_entries() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-
-        let plaintext = b"same content";
-        let id1 = actor
-            .create_new(MemSafe::new(plaintext.to_vec()).unwrap())
-            .await
-            .unwrap();
-        let id2 = actor
-            .create_new(MemSafe::new(plaintext.to_vec()).unwrap())
-            .await
-            .unwrap();
-
-        // different nonces => different ciphertext, even for identical plaintext
-        let mut conn = db.get().await.unwrap();
-        let row1: models::AeadEncrypted = schema::aead_encrypted::table
-            .filter(schema::aead_encrypted::id.eq(id1))
-            .select(models::AeadEncrypted::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-        let row2: models::AeadEncrypted = schema::aead_encrypted::table
-            .filter(schema::aead_encrypted::id.eq(id2))
-            .select(models::AeadEncrypted::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-
-        assert_ne!(row1.ciphertext, row2.ciphertext);
-
-        // but both decrypt to the same plaintext
-        let mut d1 = actor.decrypt(id1).await.unwrap();
-        let mut d2 = actor.decrypt(id2).await.unwrap();
-        assert_eq!(*d1.read().unwrap(), plaintext);
-        assert_eq!(*d2.read().unwrap(), plaintext);
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn concurrent_create_new_no_duplicate_nonces_() {
-        let db = db::create_test_pool().await;
-        let actor = KeyHolder::spawn(bootstrapped_actor(&db).await);
-
-        let writes = write_concurrently(actor, "nonce-unique", 32).await;
-        assert_eq!(writes.len(), 32);
-
-        let mut conn = db.get().await.unwrap();
-        let rows: Vec<models::AeadEncrypted> = schema::aead_encrypted::table
-            .select(models::AeadEncrypted::as_select())
-            .load(&mut conn)
-            .await
-            .unwrap();
-        assert_eq!(rows.len(), 32);
-
-        let nonces: Vec<&Vec<u8>> = rows.iter().map(|r| &r.current_nonce).collect();
-        let unique: HashSet<&Vec<u8>> = nonces.iter().copied().collect();
-        assert_eq!(nonces.len(), unique.len(), "all nonces must be unique");
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn concurrent_create_new_root_nonce_never_moves_backward() {
-        let db = db::create_test_pool().await;
-        let actor = KeyHolder::spawn(bootstrapped_actor(&db).await);
-
-        write_concurrently(actor, "root-max", 24).await;
-
-        let mut conn = db.get().await.unwrap();
-        let rows: Vec<models::AeadEncrypted> = schema::aead_encrypted::table
-            .select(models::AeadEncrypted::as_select())
-            .load(&mut conn)
-            .await
-            .unwrap();
-        let max_nonce = rows
-            .iter()
-            .map(|r| r.current_nonce.clone())
-            .max()
-            .expect("at least one row");
-
-        let root_row: models::RootKeyHistory = schema::root_key_history::table
-            .select(models::RootKeyHistory::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-        assert_eq!(root_row.data_encryption_nonce, max_nonce);
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn nonce_monotonic_even_when_nonce_allocation_interleaves() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-        let root_key_history_id = match actor.state {
-            State::Unsealed {
-                root_key_history_id,
-                ..
-            } => root_key_history_id,
-            _ => panic!("expected unsealed state"),
-        };
-
-        let n1 = KeyHolder::get_new_nonce(&db, root_key_history_id)
-            .await
-            .unwrap();
-        let n2 = KeyHolder::get_new_nonce(&db, root_key_history_id)
-            .await
-            .unwrap();
-        assert!(n2.to_vec() > n1.to_vec(), "nonce must increase");
-
-        let mut conn = db.get().await.unwrap();
-        let root_row: models::RootKeyHistory = schema::root_key_history::table
-            .select(models::RootKeyHistory::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-        assert_eq!(root_row.data_encryption_nonce, n2.to_vec());
-
-        let id = actor
-            .create_new(MemSafe::new(b"post-interleave".to_vec()).unwrap())
-            .await
-            .unwrap();
-        let row: models::AeadEncrypted = schema::aead_encrypted::table
-            .filter(schema::aead_encrypted::id.eq(id))
-            .select(models::AeadEncrypted::as_select())
-            .first(&mut conn)
-            .await
-            .unwrap();
-        assert!(
-            row.current_nonce > n2.to_vec(),
-            "next write must advance nonce"
-        );
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn insert_failure_does_not_create_partial_row() {
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-        let root_key_history_id = match actor.state {
-            State::Unsealed {
-                root_key_history_id,
-                ..
-            } => root_key_history_id,
-            _ => panic!("expected unsealed state"),
-        };
-
-        let mut conn = db.get().await.unwrap();
-        let before_count: i64 = schema::aead_encrypted::table
-            .count()
-            .get_result(&mut conn)
-            .await
-            .unwrap();
-        let before_root_nonce: Vec<u8> = schema::root_key_history::table
-            .filter(schema::root_key_history::id.eq(root_key_history_id))
-            .select(schema::root_key_history::data_encryption_nonce)
-            .first(&mut conn)
-            .await
-            .unwrap();
-
-        sql_query(
-            "CREATE TRIGGER fail_aead_insert BEFORE INSERT ON aead_encrypted BEGIN SELECT RAISE(ABORT, 'forced test failure'); END;",
-        )
-        .execute(&mut conn)
-        .await
-        .unwrap();
-        drop(conn);
-
-        let err = actor
-            .create_new(MemSafe::new(b"should fail".to_vec()).unwrap())
-            .await
-            .unwrap_err();
-        assert!(matches!(err, Error::DatabaseTransaction(_)));
-
-        let mut conn = db.get().await.unwrap();
-        sql_query("DROP TRIGGER fail_aead_insert;")
-            .execute(&mut conn)
-            .await
-            .unwrap();
-
-        let after_count: i64 = schema::aead_encrypted::table
-            .count()
-            .get_result(&mut conn)
-            .await
-            .unwrap();
-        assert_eq!(
-            before_count, after_count,
-            "failed insert must not create row"
-        );
-
-        let after_root_nonce: Vec<u8> = schema::root_key_history::table
-            .filter(schema::root_key_history::id.eq(root_key_history_id))
-            .select(schema::root_key_history::data_encryption_nonce)
-            .first(&mut conn)
-            .await
-            .unwrap();
-        assert!(
-            after_root_nonce > before_root_nonce,
-            "current behavior allows nonce gap on failed insert"
-        );
-    }
-
-    #[tokio::test]
-    #[test_log::test]
-    async fn decrypt_roundtrip_after_high_concurrency() {
-        let db = db::create_test_pool().await;
-        let actor = KeyHolder::spawn(bootstrapped_actor(&db).await);
-
-        let writes = write_concurrently(actor, "roundtrip", 40).await;
-        let expected: HashMap<i32, Vec<u8>> = writes.into_iter().collect();
-
-        let mut decryptor = KeyHolder::new(db.clone()).await.unwrap();
-        decryptor
-            .try_unseal(MemSafe::new(b"test-seal-key".to_vec()).unwrap())
-            .await
-            .unwrap();
-
-        for (id, plaintext) in expected {
-            let mut decrypted = decryptor.decrypt(id).await.unwrap();
-            assert_eq!(*decrypted.read().unwrap(), plaintext);
-        }
-    }
-
-    // #[tokio::test]
-    // #[test_log::test]
-    // async fn swapping_ciphertext_and_nonce_between_rows_changes_logical_binding() {
-    //     let db = db::create_test_pool().await;
-    //     let mut actor = bootstrapped_actor(&db).await;
-
-    //     let plaintext1 = b"entry-one";
-    //     let plaintext2 = b"entry-two";
-    //     let id1 = actor
-    //         .create_new(MemSafe::new(plaintext1.to_vec()).unwrap())
-    //         .await
-    //         .unwrap();
-    //     let id2 = actor
-    //         .create_new(MemSafe::new(plaintext2.to_vec()).unwrap())
-    //         .await
-    //         .unwrap();
-
-    //     let mut conn = db.get().await.unwrap();
-    //     let row1: models::AeadEncrypted = schema::aead_encrypted::table
-    //         .filter(schema::aead_encrypted::id.eq(id1))
-    //         .select(models::AeadEncrypted::as_select())
-    //         .first(&mut conn)
-    //         .await
-    //         .unwrap();
-    //     let row2: models::AeadEncrypted = schema::aead_encrypted::table
-    //         .filter(schema::aead_encrypted::id.eq(id2))
-    //         .select(models::AeadEncrypted::as_select())
-    //         .first(&mut conn)
-    //         .await
-    //         .unwrap();
-
-    //     update(schema::aead_encrypted::table.filter(schema::aead_encrypted::id.eq(id1)))
-    //         .set((
-    //             schema::aead_encrypted::ciphertext.eq(row2.ciphertext.clone()),
-    //             schema::aead_encrypted::current_nonce.eq(row2.current_nonce.clone()),
-    //         ))
-    //         .execute(&mut conn)
-    //         .await
-    //         .unwrap();
-    //     update(schema::aead_encrypted::table.filter(schema::aead_encrypted::id.eq(id2)))
-    //         .set((
-    //             schema::aead_encrypted::ciphertext.eq(row1.ciphertext.clone()),
-    //             schema::aead_encrypted::current_nonce.eq(row1.current_nonce.clone()),
-    //         ))
-    //         .execute(&mut conn)
-    //         .await
-    //         .unwrap();
-
-    //     let mut d1 = actor.decrypt(id1).await.unwrap();
-    //     let mut d2 = actor.decrypt(id2).await.unwrap();
-    //     assert_eq!(*d1.read().unwrap(), plaintext2);
-    //     assert_eq!(*d2.read().unwrap(), plaintext1);
-    // }
-    #[tokio::test]
-    #[test_log::test]
-    async fn broken_db_nonce_format_fails_closed() {
-        // malformed root_key_history nonce must fail create_new
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-        let root_key_history_id = match actor.state {
-            State::Unsealed {
-                root_key_history_id,
-                ..
-            } => root_key_history_id,
-            _ => panic!("expected unsealed state"),
-        };
-
-        let mut conn = db.get().await.unwrap();
-        update(
-            schema::root_key_history::table
-                .filter(schema::root_key_history::id.eq(root_key_history_id)),
-        )
-        .set(schema::root_key_history::data_encryption_nonce.eq(vec![1, 2, 3]))
-        .execute(&mut conn)
-        .await
-        .unwrap();
-        drop(conn);
-
-        let err = actor
-            .create_new(MemSafe::new(b"must fail".to_vec()).unwrap())
-            .await
-            .unwrap_err();
-        assert!(matches!(err, Error::BrokenDatabase));
-
-        // malformed per-row nonce must fail decrypt
-        let db = db::create_test_pool().await;
-        let mut actor = bootstrapped_actor(&db).await;
-        let id = actor
-            .create_new(MemSafe::new(b"decrypt target".to_vec()).unwrap())
-            .await
-            .unwrap();
-        let mut conn = db.get().await.unwrap();
-        update(schema::aead_encrypted::table.filter(schema::aead_encrypted::id.eq(id)))
-            .set(schema::aead_encrypted::current_nonce.eq(vec![7, 8]))
-            .execute(&mut conn)
-            .await
-            .unwrap();
-        drop(conn);
-
-        let err = actor.decrypt(id).await.unwrap_err();
-        assert!(matches!(err, Error::BrokenDatabase));
-    }
-}
--- a/server/crates/arbiter-server/src/actors/keyholder/v1.rs
+++ b/server/crates/arbiter-server/src/actors/keyholder/v1.rs
@@ -1,242 +0,0 @@
-use std::ops::Deref as _;
-
-use argon2::{Algorithm, Argon2, password_hash::Salt as ArgonSalt};
-use chacha20poly1305::{
-    AeadInPlace, Key, KeyInit as _, XChaCha20Poly1305, XNonce,
-    aead::{AeadMut, Error, Payload},
-};
-use memsafe::MemSafe;
-use rand::{
-    Rng as _, SeedableRng,
-    rngs::{StdRng, SysRng},
-};
-
-pub const ROOT_KEY_TAG: &[u8] = "arbiter/seal/v1".as_bytes();
-pub const TAG: &[u8] = "arbiter/private-key/v1".as_bytes();
-
-pub const NONCE_LENGTH: usize = 24;
-
-#[derive(Default)]
-pub struct Nonce([u8; NONCE_LENGTH]);
-impl Nonce {
-    pub fn increment(&mut self) {
-        for i in (0..self.0.len()).rev() {
-            if self.0[i] == 0xFF {
-                self.0[i] = 0;
-            } else {
-                self.0[i] += 1;
-                break;
-            }
-        }
-    }
-
-    pub fn to_vec(&self) -> Vec<u8> {
-        self.0.to_vec()
-    }
-}
-impl<'a> TryFrom<&'a [u8]> for Nonce {
-    type Error = ();
-
-    fn try_from(value: &'a [u8]) -> Result<Self, Self::Error> {
-        if value.len() != NONCE_LENGTH {
-            return Err(());
-        }
-        let mut nonce = [0u8; NONCE_LENGTH];
-        nonce.copy_from_slice(&value);
-        Ok(Self(nonce))
-    }
-}
-
-pub struct KeyCell(pub(super) MemSafe<Key>);
-impl From<MemSafe<Key>> for KeyCell {
-    fn from(value: MemSafe<Key>) -> Self {
-        Self(value)
-    }
-}
-impl TryFrom<MemSafe<Vec<u8>>> for KeyCell {
-    type Error = ();
-
-    fn try_from(mut value: MemSafe<Vec<u8>>) -> Result<Self, Self::Error> {
-        let value = value.read().unwrap();
-        if value.len() != size_of::<Key>() {
-            return Err(());
-        }
-        let mut cell = MemSafe::new(Key::default()).unwrap();
-        {
-            let mut cell_write = cell.write().unwrap();
-            let cell_slice: &mut [u8] = cell_write.as_mut();
-            cell_slice.copy_from_slice(&value);
-        }
-        Ok(Self(cell))
-    }
-}
-
-impl KeyCell {
-    pub fn new_secure_random() -> Self {
-        let mut key = MemSafe::new(Key::default()).unwrap();
-        {
-            let mut key_buffer = key.write().unwrap();
-            let key_buffer: &mut [u8] = key_buffer.as_mut();
-
-            let mut rng = StdRng::try_from_rng(&mut SysRng).unwrap();
-            rng.fill_bytes(key_buffer);
-        }
-
-        key.into()
-    }
-
-    pub fn into_inner(self) -> MemSafe<Key> {
-        self.0
-    }
-
-    pub fn encrypt_in_place(
-        &mut self,
-        nonce: &Nonce,
-        associated_data: &[u8],
-        mut buffer: impl AsMut<Vec<u8>>,
-    ) -> Result<(), Error> {
-        let key_reader = self.0.read().unwrap();
-        let key_ref = key_reader.deref();
-        let cipher = XChaCha20Poly1305::new(key_ref);
-        let nonce = XNonce::from_slice(nonce.0.as_ref());
-        let buffer = buffer.as_mut();
-        cipher.encrypt_in_place(nonce, associated_data, buffer)
-    }
-    pub fn decrypt_in_place(
-        &mut self,
-        nonce: &Nonce,
-        associated_data: &[u8],
-        buffer: &mut MemSafe<Vec<u8>>,
-    ) -> Result<(), Error> {
-        let key_reader = self.0.read().unwrap();
-        let key_ref = key_reader.deref();
-        let cipher = XChaCha20Poly1305::new(key_ref);
-        let nonce = XNonce::from_slice(nonce.0.as_ref());
-        let mut buffer = buffer.write().unwrap();
-        let buffer: &mut Vec<u8> = buffer.as_mut();
-        cipher.decrypt_in_place(nonce, associated_data, buffer)
-    }
-
-    pub fn encrypt(
-        &mut self,
-        nonce: &Nonce,
-        associated_data: &[u8],
-        plaintext: impl AsRef<[u8]>,
-    ) -> Result<Vec<u8>, Error> {
-        let key_reader = self.0.read().unwrap();
-        let key_ref = key_reader.deref();
-        let mut cipher = XChaCha20Poly1305::new(key_ref);
-        let nonce = XNonce::from_slice(nonce.0.as_ref());
-
-
-        let ciphertext = cipher.encrypt(
-            &nonce,
-            Payload {
-                msg: plaintext.as_ref(),
-                aad: associated_data,
-            },
-        )?;
-        Ok(ciphertext)
-    }
-}
-
-pub type Salt = [u8; ArgonSalt::RECOMMENDED_LENGTH];
-
-pub(super) fn generate_salt() -> Salt {
-    let mut salt = Salt::default();
-    let mut rng = StdRng::try_from_rng(&mut SysRng).unwrap();
-    rng.fill_bytes(&mut salt);
-    salt
-}
-
-/// User password might be of different length, have not enough entropy, etc...
-/// Derive a fixed-length key from the password using Argon2id, which is designed for password hashing and key derivation.
-pub(super) fn derive_seal_key(mut password: MemSafe<Vec<u8>>, salt: &Salt) -> KeyCell {
-    let params = argon2::Params::new(262_144, 3, 4, None).unwrap();
-    let hasher = Argon2::new(Algorithm::Argon2id, argon2::Version::V0x13, params);
-    let mut key = MemSafe::new(Key::default()).unwrap();
-    {
-        let password_source = password.read().unwrap();
-        let mut key_buffer = key.write().unwrap();
-        let key_buffer: &mut [u8] = key_buffer.as_mut();
-
-        hasher
-            .hash_password_into(password_source.deref(), salt, key_buffer)
-            .unwrap();
-    }
-
-    key.into()
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use memsafe::MemSafe;
-
-    #[test]
-    pub fn derive_seal_key_deterministic() {
-        static PASSWORD: &[u8] = b"password";
-        let password = MemSafe::new(PASSWORD.to_vec()).unwrap();
-        let password2 = MemSafe::new(PASSWORD.to_vec()).unwrap();
-        let salt = generate_salt();
-
-        let mut key1 = derive_seal_key(password, &salt);
-        let mut key2 = derive_seal_key(password2, &salt);
-
-        let key1_reader = key1.0.read().unwrap();
-        let key2_reader = key2.0.read().unwrap();
-
-        assert_eq!(key1_reader.deref(), key2_reader.deref());
-    }
-
-    #[test]
-    pub fn successful_derive() {
-        static PASSWORD: &[u8] = b"password";
-        let password = MemSafe::new(PASSWORD.to_vec()).unwrap();
-        let salt = generate_salt();
-
-        let mut key = derive_seal_key(password, &salt);
-        let key_reader = key.0.read().unwrap();
-        let key_ref = key_reader.deref();
-
-        assert_ne!(key_ref.as_slice(), &[0u8; 32][..]);
-    }
-
-    #[test]
-    pub fn encrypt_decrypt() {
-        static PASSWORD: &[u8] = b"password";
-        let password = MemSafe::new(PASSWORD.to_vec()).unwrap();
-        let salt = generate_salt();
-
-        let mut key = derive_seal_key(password, &salt);
-        let nonce = Nonce(*b"unique nonce 123 1231233"); // 24 bytes for XChaCha20Poly1305
-        let associated_data = b"associated data";
-        let mut buffer = b"secret data".to_vec();
-
-        key.encrypt_in_place(&nonce, associated_data, &mut buffer)
-            .unwrap();
-        assert_ne!(buffer, b"secret data");
-
-        let mut buffer = MemSafe::new(buffer).unwrap();
-
-        key.decrypt_in_place(&nonce, associated_data, &mut buffer)
-            .unwrap();
-
-        let buffer = buffer.read().unwrap();
-        assert_eq!(*buffer, b"secret data");
-    }
-
-    #[test]
-    // We should fuzz this
-    pub fn test_nonce_increment() {
-        let mut nonce = Nonce([0u8; NONCE_LENGTH]);
-        nonce.increment();
-
-        assert_eq!(
-            nonce.0,
-            [
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1
-            ]
-        );
-    }
-}
--- a/server/crates/arbiter-server/src/actors/user_agent.rs
+++ b/server/crates/arbiter-server/src/actors/user_agent.rs
@@ -1,58 +1,102 @@
-use std::{
-    ops::DerefMut,
-    sync::Mutex,
-};
+use std::sync::Arc;

-use arbiter_proto::proto::{
-    UserAgentResponse,
-    auth::{
-        self, AuthChallengeRequest, AuthOk, ServerMessage as AuthServerMessage,
-        server_message::Payload as ServerAuthPayload,
+use arbiter_proto::{
+    proto::{
+        UserAgentRequest, UserAgentResponse,
+        auth::{
+            self, AuthChallengeRequest, ClientMessage, ServerMessage as AuthServerMessage,
+            client_message::Payload as ClientAuthPayload,
+            server_message::Payload as ServerAuthPayload,
+        },
+        user_agent_request::Payload as UserAgentRequestPayload,
+        user_agent_response::Payload as UserAgentResponsePayload,
    },
-    unseal::{UnsealEncryptedKey, UnsealResult, UnsealStart, UnsealStartResponse},
-    user_agent_response::Payload as UserAgentResponsePayload,
-};
-use chacha20poly1305::{
-    AeadInPlace, XChaCha20Poly1305, XNonce,
-    aead::KeyInit,
+    transport::Bi,
 };
 use diesel::{ExpressionMethods as _, OptionalExtension as _, QueryDsl, dsl::update};
 use diesel_async::{AsyncConnection, RunQueryDsl};
 use ed25519_dalek::VerifyingKey;
-use kameo::{Actor, actor::ActorRef, messages};
-use memsafe::MemSafe;
+use futures::StreamExt;
+use kameo::{
+    Actor,
+    actor::{ActorRef, Spawn},
+    error::SendError,
+    messages,
+    prelude::Context,
+};
+use tokio::sync::mpsc;
 use tokio::sync::mpsc::Sender;
-use tonic::Status;
-use tracing::{error, info};
-use x25519_dalek::{EphemeralSecret, PublicKey};
+use tonic::{Status, transport::Server};
+use tracing::{debug, error, info};

 use crate::{
    ServerContext,
-    actors::{
-        bootstrap::{Bootstrapper, ConsumeToken},
-        user_agent::state::{
-            AuthRequestContext, ChallengeContext, DummyContext, UnsealContext, UserAgentEvents,
-            UserAgentStateMachine, UserAgentStates,
-        },
-    },
+    actors::user_agent::auth::AuthChallenge,
+    context::bootstrap::{BootstrapActor, ConsumeToken},
    db::{self, schema},
    errors::GrpcStatusExt,
 };

-mod state;
-#[cfg(test)]
-mod tests;
+#[derive(Debug)]
+pub struct ChallengeContext {
+    challenge: AuthChallenge,
+    key: VerifyingKey,
+}

-mod transport;
-pub(crate) use transport::handle_user_agent;
+// Request context with deserialized public key for state machine.
+// This intermediate struct is needed because the state machine branches depending on presence of bootstrap token,
+// but we want to have the deserialized key in both branches.
+#[derive(Clone, Debug)]
+pub struct AuthRequestContext {
+    pubkey: VerifyingKey,
+    bootstrap_token: Option<String>,
+}
+
+smlang::statemachine!(
+    name: UserAgent,
+    derive_states: [Debug],
+    custom_error: false,
+    transitions: {
+        *Init + AuthRequest(AuthRequestContext) / auth_request_context =  ReceivedAuthRequest(AuthRequestContext),
+        ReceivedAuthRequest(AuthRequestContext) + ReceivedBootstrapToken = Authenticated,
+
+        ReceivedAuthRequest(AuthRequestContext) + SentChallenge(ChallengeContext) / move_challenge = WaitingForChallengeSolution(ChallengeContext),
+
+        WaitingForChallengeSolution(ChallengeContext) + ReceivedGoodSolution = Authenticated,
+        WaitingForChallengeSolution(ChallengeContext) + ReceivedBadSolution = AuthError, // block further transitions, but connection should close anyway
+    }
+);
+
+pub struct DummyContext;
+impl UserAgentStateMachineContext for DummyContext {
+    #[allow(missing_docs)]
+    #[allow(clippy::unused_unit)]
+    fn move_challenge(
+        &mut self,
+        state_data: &AuthRequestContext,
+        event_data: ChallengeContext,
+    ) -> Result<ChallengeContext, ()> {
+        Ok(event_data)
+    }
+
+    #[allow(missing_docs)]
+    #[allow(clippy::unused_unit)]
+    fn auth_request_context(
+        &mut self,
+        event_data: AuthRequestContext,
+    ) -> Result<AuthRequestContext, ()> {
+        Ok(event_data)
+    }
+}

 #[derive(Actor)]
 pub struct UserAgentActor {
    db: db::DatabasePool,
-    bootstapper: ActorRef<Bootstrapper>,
+    bootstapper: ActorRef<BootstrapActor>,
    state: UserAgentStateMachine<DummyContext>,
-    // will be used in future
-    _tx: Sender<Result<UserAgentResponse, Status>>,
+    tx: Sender<Result<UserAgentResponse, Status>>,
+    context: ServerContext,
+    ephemeral_key: Option<crate::context::unseal::EphemeralKeyPair>,
 }

 impl UserAgentActor {
@@ -64,21 +108,25 @@ impl UserAgentActor {
            db: context.db.clone(),
            bootstapper: context.bootstrapper.clone(),
            state: UserAgentStateMachine::new(DummyContext),
-            _tx: tx,
+            tx,
+            context,
+            ephemeral_key: None,
        }
    }

-    #[cfg(test)]
    pub(crate) fn new_manual(
        db: db::DatabasePool,
-        bootstapper: ActorRef<Bootstrapper>,
+        bootstapper: ActorRef<BootstrapActor>,
+        context: ServerContext,
        tx: Sender<Result<UserAgentResponse, Status>>,
    ) -> Self {
        Self {
            db,
            bootstapper,
            state: UserAgentStateMachine::new(DummyContext),
-            _tx: tx,
+            tx,
+            context,
+            ephemeral_key: None,
        }
    }

@@ -124,7 +172,7 @@ impl UserAgentActor {

        self.transition(UserAgentEvents::ReceivedBootstrapToken)?;

-        Ok(auth_response(ServerAuthPayload::AuthOk(AuthOk {})))
+        Ok(auth_response(ServerAuthPayload::AuthOk(auth::AuthOk {})))
    }

    async fn auth_with_challenge(&mut self, pubkey: VerifyingKey, pubkey_bytes: Vec<u8>) -> Output {
@@ -164,7 +212,7 @@ impl UserAgentActor {

        let challenge = auth::AuthChallenge {
            pubkey: pubkey_bytes,
-            nonce: nonce,
+            nonce,
        };

        self.transition(UserAgentEvents::SentChallenge(ChallengeContext {
@@ -218,93 +266,18 @@ fn auth_response(payload: ServerAuthPayload) -> UserAgentResponse {
    }
 }

-fn unseal_response(payload: UserAgentResponsePayload) -> UserAgentResponse {
-    UserAgentResponse {
-        payload: Some(payload),
-    }
-}
-
 #[messages]
 impl UserAgentActor {
-    #[message]
-    pub async fn handle_unseal_request(&mut self, req: UnsealStart) -> Output {
-        let secret = EphemeralSecret::random();
-        let public_key = PublicKey::from(&secret);
-
-        let client_pubkey_bytes: [u8; 32] = req
-            .client_pubkey
-            .try_into()
-            .map_err(|_| Status::invalid_argument("client_pubkey must be 32 bytes"))?;
-
-        let client_public_key = PublicKey::from(client_pubkey_bytes);
-
-        self.transition(UserAgentEvents::UnsealRequest(UnsealContext {
-            server_public_key: public_key,
-            secret: Mutex::new(Some(secret)),
-            client_public_key,
-        }))?;
-
-        Ok(unseal_response(
-            UserAgentResponsePayload::UnsealStartResponse(UnsealStartResponse {
-                server_pubkey: public_key.as_bytes().to_vec(),
-            }),
-        ))
-    }
-
-    #[message]
-    pub async fn handle_unseal_encrypted_key(&mut self, req: UnsealEncryptedKey) -> Output {
-        let UserAgentStates::WaitingForUnsealKey(unseal_context) = self.state.state() else {
-            error!("Received unseal encrypted key in invalid state");
-            return Err(Status::failed_precondition(
-                "Invalid state for unseal encrypted key",
-            ));
-        };
-        let ephemeral_secret = {
-            let mut secret_lock = unseal_context.secret.lock().unwrap();
-            let secret = secret_lock.take();
-            match secret {
-                Some(secret) => secret,
-                None => {
-                    drop(secret_lock);
-                    error!("Ephemeral secret already taken");
-                    self.transition(UserAgentEvents::ReceivedInvalidKey)?;
-                    return Ok(unseal_response(UserAgentResponsePayload::UnsealResult(
-                        UnsealResult::InvalidKey.into(),
-                    )));
-                }
-            }
-        };
-
-        let nonce = XNonce::from_slice(&req.nonce);
-
-        let shared_secret = ephemeral_secret.diffie_hellman(&unseal_context.client_public_key);
-        let cipher = XChaCha20Poly1305::new(shared_secret.as_bytes().into());
-
-        let mut root_key_buffer = MemSafe::new(req.ciphertext.clone()).unwrap();
-        let mut write_handle = root_key_buffer.write().unwrap();
-        let write_handle = write_handle.deref_mut();
-
-        let decryption_result = cipher
-            .decrypt_in_place(nonce, &req.associated_data, write_handle);
-
-        match decryption_result {
-            Ok(_) => todo!("Send key to the keyguarding"),
-            Err(err) => {
-                error!(?err, "Failed to decrypt unseal key");
-                self.transition(UserAgentEvents::ReceivedInvalidKey)?;
-                return Ok(unseal_response(UserAgentResponsePayload::UnsealResult(
-                    UnsealResult::InvalidKey.into(),
-                )));
-            },
-        }
-    }
-
-    #[message]
-    pub async fn handle_auth_challenge_request(&mut self, req: AuthChallengeRequest) -> Output {
+    #[message(ctx)]
+    pub async fn handle_auth_challenge_request(
+        &mut self,
+        req: AuthChallengeRequest,
+        ctx: &mut Context<Self, Output>,
+    ) -> Output {
        let pubkey = req.pubkey.as_array().ok_or(Status::invalid_argument(
            "Expected pubkey to have specific length",
        ))?;
-        let pubkey = VerifyingKey::from_bytes(pubkey).map_err(|_err| {
+        let pubkey = VerifyingKey::from_bytes(pubkey).map_err(|err| {
            error!(?pubkey, "Failed to convert to VerifyingKey");
            Status::invalid_argument("Failed to convert pubkey to VerifyingKey")
        })?;
@@ -320,10 +293,11 @@ impl UserAgentActor {
        }
    }

-    #[message]
+    #[message(ctx)]
    pub async fn handle_auth_challenge_solution(
        &mut self,
        solution: auth::AuthChallengeSolution,
+        ctx: &mut Context<Self, Output>,
    ) -> Output {
        let (valid, challenge_context) = self.verify_challenge_solution(&solution)?;

@@ -333,11 +307,192 @@ impl UserAgentActor {
                "Client provided valid solution to authentication challenge"
            );
            self.transition(UserAgentEvents::ReceivedGoodSolution)?;
-            Ok(auth_response(ServerAuthPayload::AuthOk(AuthOk {})))
+            Ok(auth_response(ServerAuthPayload::AuthOk(auth::AuthOk {})))
        } else {
            error!("Client provided invalid solution to authentication challenge");
            self.transition(UserAgentEvents::ReceivedBadSolution)?;
            Err(Status::unauthenticated("Invalid challenge solution"))
        }
    }
+
+    #[message(ctx)]
+    pub async fn handle_unseal_request(
+        &mut self,
+        request: arbiter_proto::proto::UnsealRequest,
+        ctx: &mut Context<Self, Output>,
+    ) -> Output {
+        use arbiter_proto::proto::{
+            EphemeralKeyResponse, SealedPassword, UnsealResponse, UnsealResult,
+            unseal_request::Payload as ReqPayload,
+            unseal_response::Payload as RespPayload,
+        };
+
+        match request.payload {
+            Some(ReqPayload::EphemeralKeyRequest(_)) => {
+                // Generate new ephemeral keypair
+                let keypair = crate::context::unseal::EphemeralKeyPair::generate();
+                let expires_at = keypair.expires_at() as i64;
+                let public_bytes = keypair.public_bytes();
+
+                // Store for later use
+                self.ephemeral_key = Some(keypair);
+
+                info!("Generated ephemeral X25519 keypair for unseal, expires at {}", expires_at);
+
+                Ok(UserAgentResponse {
+                    payload: Some(UserAgentResponsePayload::UnsealResponse(UnsealResponse {
+                        payload: Some(RespPayload::EphemeralKeyResponse(EphemeralKeyResponse {
+                            server_pubkey: public_bytes,
+                            expires_at,
+                        })),
+                    })),
+                })
+            }
+
+            Some(ReqPayload::SealedPassword(sealed)) => {
+                // Get and consume ephemeral key
+                let keypair = self
+                    .ephemeral_key
+                    .take()
+                    .ok_or_else(|| Status::failed_precondition("No ephemeral key generated"))?;
+
+                // Check expiration
+                if keypair.is_expired() {
+                    error!("Ephemeral key expired before sealed password was received");
+                    return Err(Status::deadline_exceeded("Ephemeral key expired"));
+                }
+
+                // Perform ECDH
+                let shared_secret = keypair
+                    .perform_dh(&sealed.client_pubkey)
+                    .map_err(|e| Status::invalid_argument(format!("Invalid client pubkey: {}", e)))?;
+
+                // Decrypt password
+                let nonce: [u8; 12] = sealed
+                    .nonce
+                    .as_slice()
+                    .try_into()
+                    .map_err(|_| Status::invalid_argument("Nonce must be 12 bytes"))?;
+
+                let password_bytes = crate::crypto::aead::decrypt(
+                    &sealed.encrypted_password,
+                    &shared_secret,
+                    &nonce,
+                )
+                .map_err(|e| {
+                    error!("Failed to decrypt password: {}", e);
+                    Status::internal(format!("Decryption failed: {}", e))
+                })?;
+
+                let password = String::from_utf8(password_bytes).map_err(|_| {
+                    error!("Password is not valid UTF-8");
+                    Status::invalid_argument("Password must be UTF-8")
+                })?;
+
+                // Call unseal on context
+                info!("Attempting to unseal vault with decrypted password");
+                let result = self.context.unseal(&password).await;
+
+                match result {
+                    Ok(()) => {
+                        info!("Vault unsealed successfully");
+                        Ok(UserAgentResponse {
+                            payload: Some(UserAgentResponsePayload::UnsealResponse(
+                                UnsealResponse {
+                                    payload: Some(RespPayload::UnsealResult(UnsealResult {
+                                        success: true,
+                                        error_message: None,
+                                    })),
+                                },
+                            )),
+                        })
+                    }
+                    Err(e) => {
+                        error!("Unseal failed: {}", e);
+                        Ok(UserAgentResponse {
+                            payload: Some(UserAgentResponsePayload::UnsealResponse(
+                                UnsealResponse {
+                                    payload: Some(RespPayload::UnsealResult(UnsealResult {
+                                        success: false,
+                                        error_message: Some(e.to_string()),
+                                    })),
+                                },
+                            )),
+                        })
+                    }
+                }
+            }
+
+            None => {
+                error!("Received empty unseal request");
+                Err(Status::invalid_argument("Empty unseal request"))
+            }
+        }
+    }
 }
+
+#[cfg(test)]
+mod tests {
+    use arbiter_proto::proto::{
+        UserAgentResponse,
+        auth::{AuthChallengeRequest, AuthOk},
+        user_agent_response::Payload as UserAgentResponsePayload,
+    };
+    use kameo::actor::Spawn;
+
+    use crate::{
+        actors::user_agent::HandleAuthChallengeRequest, context::bootstrap::BootstrapActor, db,
+    };
+
+    use super::UserAgentActor;
+
+    #[tokio::test]
+    #[test_log::test]
+    pub async fn test_bootstrap_token_auth() {
+        let db = db::create_test_pool().await;
+        // explicitly not installing any user_agent pubkeys
+        let bootstrapper = BootstrapActor::new(&db).await.unwrap(); // this will create bootstrap token
+        let token = bootstrapper.get_token().unwrap();
+
+        let bootstrapper_ref = BootstrapActor::spawn(bootstrapper);
+        let context = crate::ServerContext::new(db.clone()).await.unwrap();
+        let user_agent = UserAgentActor::new_manual(
+            db.clone(),
+            bootstrapper_ref,
+            context,
+            tokio::sync::mpsc::channel(1).0, // dummy channel, we won't actually send responses in this test
+        );
+        let user_agent_ref = UserAgentActor::spawn(user_agent);
+
+        // simulate client sending auth request with bootstrap token
+        let new_key = ed25519_dalek::SigningKey::generate(&mut rand::rng());
+        let pubkey_bytes = new_key.verifying_key().to_bytes().to_vec();
+
+        let result = user_agent_ref
+            .ask(HandleAuthChallengeRequest {
+                req: AuthChallengeRequest {
+                    pubkey: pubkey_bytes,
+                    bootstrap_token: Some(token),
+                },
+            })
+            .await
+            .expect("Shouldn't fail to send message");
+
+        // auth succeeded
+        assert_eq!(
+            result,
+            UserAgentResponse {
+                payload: Some(UserAgentResponsePayload::AuthMessage(
+                    arbiter_proto::proto::auth::ServerMessage {
+                        payload: Some(arbiter_proto::proto::auth::server_message::Payload::AuthOk(
+                            AuthOk {},
+                        )),
+                    },
+                )),
+            }
+        );
+    }
+}
+
+mod transport;
+pub(crate) use transport::handle_user_agent;
--- a/server/crates/arbiter-server/src/actors/user_agent/state.rs
+++ b/server/crates/arbiter-server/src/actors/user_agent/state.rs
@@ -1,76 +0,0 @@
-use std::sync::Mutex;
-
-use arbiter_proto::proto::auth::AuthChallenge;
-use ed25519_dalek::VerifyingKey;
-use x25519_dalek::{EphemeralSecret, PublicKey};
-
-/// Context for state machine with validated key and sent challenge
-/// Challenge is then transformed to bytes using shared function and verified
-#[derive(Clone, Debug)]
-pub struct ChallengeContext {
-    pub challenge: AuthChallenge,
-    pub key: VerifyingKey,
-}
-
-// Request context with deserialized public key for state machine.
-// This intermediate struct is needed because the state machine branches depending on presence of bootstrap token,
-// but we want to have the deserialized key in both branches.
-#[derive(Clone, Debug)]
-pub struct AuthRequestContext {
-    pub pubkey: VerifyingKey,
-    pub bootstrap_token: Option<String>,
-}
-
-pub struct UnsealContext {
-    pub server_public_key: PublicKey,
-    pub client_public_key: PublicKey,
-    pub secret: Mutex<Option<EphemeralSecret>>,
-}
-
-
-
-smlang::statemachine!(
-    name: UserAgent,
-    custom_error: false,
-    transitions: {
-        *Init + AuthRequest(AuthRequestContext) / auth_request_context =  ReceivedAuthRequest(AuthRequestContext),
-        ReceivedAuthRequest(AuthRequestContext) + ReceivedBootstrapToken = Idle,
-
-        ReceivedAuthRequest(AuthRequestContext) + SentChallenge(ChallengeContext) / move_challenge = WaitingForChallengeSolution(ChallengeContext),
-
-        WaitingForChallengeSolution(ChallengeContext) + ReceivedGoodSolution = Idle,
-        WaitingForChallengeSolution(ChallengeContext) + ReceivedBadSolution = AuthError, // block further transitions, but connection should close anyway
-
-        Idle + UnsealRequest(UnsealContext) / generate_temp_keypair = WaitingForUnsealKey(UnsealContext),
-        WaitingForUnsealKey(UnsealContext) + ReceivedValidKey = Unsealed,
-        WaitingForUnsealKey(UnsealContext) + ReceivedInvalidKey = Idle,
-    }
-);
-
-pub struct DummyContext;
-impl UserAgentStateMachineContext for DummyContext {
-    #[allow(missing_docs)]
-    #[allow(clippy::unused_unit)]
-    fn move_challenge(
-        &mut self,
-        _state_data: &AuthRequestContext,
-        event_data: ChallengeContext,
-    ) -> Result<ChallengeContext, ()> {
-        Ok(event_data)
-    }
-
-    #[allow(missing_docs)]
-    #[allow(clippy::unused_unit)]
-    fn auth_request_context(
-        &mut self,
-        event_data: AuthRequestContext,
-    ) -> Result<AuthRequestContext, ()> {
-        Ok(event_data)
-    }
-
-    #[allow(missing_docs)]
-    #[allow(clippy::unused_unit)]
-    fn generate_temp_keypair(&mut self, event_data: UnsealContext) -> Result<UnsealContext, ()> {
-        Ok(event_data)
-    }
-}
--- a/server/crates/arbiter-server/src/actors/user_agent/tests.rs
+++ b/server/crates/arbiter-server/src/actors/user_agent/tests.rs
@@ -1,199 +0,0 @@
-use arbiter_proto::proto::{
-    UserAgentResponse,
-    auth::{self, AuthChallengeRequest, AuthOk},
-    user_agent_response::Payload as UserAgentResponsePayload,
-};
-use chrono::format;
-use diesel::{ExpressionMethods as _, QueryDsl, insert_into};
-use diesel_async::RunQueryDsl;
-use ed25519_dalek::Signer as _;
-use kameo::actor::Spawn;
-
-use crate::{
-    actors::{
-        bootstrap::Bootstrapper,
-        user_agent::{HandleAuthChallengeRequest, HandleAuthChallengeSolution},
-    },
-    db::{self, schema},
-};
-
-use super::UserAgentActor;
-
-#[tokio::test]
-#[test_log::test]
-pub async fn test_bootstrap_token_auth() {
-    let db = db::create_test_pool().await;
-    // explicitly not installing any user_agent pubkeys
-    let bootstrapper = Bootstrapper::new(&db).await.unwrap(); // this will create bootstrap token
-    let token = bootstrapper.get_token().unwrap();
-
-    let bootstrapper_ref = Bootstrapper::spawn(bootstrapper);
-    let user_agent = UserAgentActor::new_manual(
-        db.clone(),
-        bootstrapper_ref,
-        tokio::sync::mpsc::channel(1).0, // dummy channel, we won't actually send responses in this test
-    );
-    let user_agent_ref = UserAgentActor::spawn(user_agent);
-
-    // simulate client sending auth request with bootstrap token
-    let new_key = ed25519_dalek::SigningKey::generate(&mut rand::rng());
-    let pubkey_bytes = new_key.verifying_key().to_bytes().to_vec();
-
-    let result = user_agent_ref
-        .ask(HandleAuthChallengeRequest {
-            req: AuthChallengeRequest {
-                pubkey: pubkey_bytes,
-                bootstrap_token: Some(token),
-            },
-        })
-        .await
-        .expect("Shouldn't fail to send message");
-
-    // auth succeeded
-    assert_eq!(
-        result,
-        UserAgentResponse {
-            payload: Some(UserAgentResponsePayload::AuthMessage(
-                arbiter_proto::proto::auth::ServerMessage {
-                    payload: Some(arbiter_proto::proto::auth::server_message::Payload::AuthOk(
-                        AuthOk {},
-                    )),
-                },
-            )),
-        }
-    );
-
-    // key is succesfully recorded in database
-    let mut conn = db.get().await.unwrap();
-    let stored_pubkey: Vec<u8> = schema::useragent_client::table
-        .select(schema::useragent_client::public_key)
-        .first::<Vec<u8>>(&mut conn)
-        .await
-        .unwrap();
-    assert_eq!(stored_pubkey, new_key.verifying_key().to_bytes().to_vec());
-}
-
-#[tokio::test]
-#[test_log::test]
-pub async fn test_bootstrap_invalid_token_auth() {
-    let db = db::create_test_pool().await;
-    // explicitly not installing any user_agent pubkeys
-    let bootstrapper = Bootstrapper::new(&db).await.unwrap(); // this will create bootstrap token
-
-    let bootstrapper_ref = Bootstrapper::spawn(bootstrapper);
-    let user_agent = UserAgentActor::new_manual(
-        db.clone(),
-        bootstrapper_ref,
-        tokio::sync::mpsc::channel(1).0, // dummy channel, we won't actually send responses in this test
-    );
-    let user_agent_ref = UserAgentActor::spawn(user_agent);
-
-    // simulate client sending auth request with bootstrap token
-    let new_key = ed25519_dalek::SigningKey::generate(&mut rand::rng());
-    let pubkey_bytes = new_key.verifying_key().to_bytes().to_vec();
-
-    let result = user_agent_ref
-        .ask(HandleAuthChallengeRequest {
-            req: AuthChallengeRequest {
-                pubkey: pubkey_bytes,
-                bootstrap_token: Some("invalid_token".to_string()),
-            },
-        })
-        .await;
-
-    match result {
-        Err(kameo::error::SendError::HandlerError(status)) => {
-            assert_eq!(status.code(), tonic::Code::InvalidArgument);
-            insta::assert_debug_snapshot!(status, @r#"
-                Status {
-                    code: InvalidArgument,
-                    message: "Invalid bootstrap token",
-                    source: None,
-                }
-                "#);
-        }
-        Err(other) => {
-            panic!("Expected SendError::HandlerError, got {other:?}");
-        }
-        Ok(_) => {
-            panic!("Expected error due to invalid bootstrap token, but got success");
-        }
-    }
-}
-
-#[tokio::test]
-#[test_log::test]
-pub async fn test_challenge_auth() {
-    let db = db::create_test_pool().await;
-
-    let bootstrapper_ref = Bootstrapper::spawn(Bootstrapper::new(&db).await.unwrap());
-    let user_agent = UserAgentActor::new_manual(
-        db.clone(),
-        bootstrapper_ref,
-        tokio::sync::mpsc::channel(1).0, // dummy channel, we won't actually send responses in this test
-    );
-    let user_agent_ref = UserAgentActor::spawn(user_agent);
-
-    // simulate client sending auth request with bootstrap token
-    let new_key = ed25519_dalek::SigningKey::generate(&mut rand::rng());
-    let pubkey_bytes = new_key.verifying_key().to_bytes().to_vec();
-
-    // insert pubkey into database to trigger challenge-response auth flow
-    {
-        let mut conn = db.get().await.unwrap();
-        insert_into(schema::useragent_client::table)
-            .values(schema::useragent_client::public_key.eq(pubkey_bytes.clone()))
-            .execute(&mut conn)
-            .await
-            .unwrap();
-    }
-
-    let result = user_agent_ref
-        .ask(HandleAuthChallengeRequest {
-            req: AuthChallengeRequest {
-                pubkey: pubkey_bytes,
-                bootstrap_token: None,
-            },
-        })
-        .await
-        .expect("Shouldn't fail to send message");
-
-    // auth challenge succeeded
-    let UserAgentResponse {
-        payload:
-            Some(UserAgentResponsePayload::AuthMessage(arbiter_proto::proto::auth::ServerMessage {
-                payload:
-                    Some(arbiter_proto::proto::auth::server_message::Payload::AuthChallenge(challenge)),
-            })),
-    } = result
-    else {
-        panic!("Expected auth challenge response, got {result:?}");
-    };
-
-    let formatted_challenge = arbiter_proto::format_challenge(&challenge);
-    let signature = new_key.sign(&formatted_challenge);
-    let serialized_signature = signature.to_bytes().to_vec();
-
-    let result = user_agent_ref
-        .ask(HandleAuthChallengeSolution {
-            solution: auth::AuthChallengeSolution {
-                signature: serialized_signature,
-            },
-        })
-        .await
-        .expect("Shouldn't fail to send message");
-
-    // auth succeeded
-    assert_eq!(
-        result,
-        UserAgentResponse {
-            payload: Some(UserAgentResponsePayload::AuthMessage(
-                arbiter_proto::proto::auth::ServerMessage {
-                    payload: Some(arbiter_proto::proto::auth::server_message::Payload::AuthOk(
-                        AuthOk {},
-                    )),
-                },
-            )),
-        }
-    );
-}
--- a/server/crates/arbiter-server/src/actors/user_agent/transport.rs
+++ b/server/crates/arbiter-server/src/actors/user_agent/transport.rs
@@ -2,9 +2,12 @@ use super::UserAgentActor;
 use arbiter_proto::proto::{
    UserAgentRequest, UserAgentResponse,
    auth::{
-        ClientMessage as ClientAuthMessage, client_message::Payload as ClientAuthPayload,
+        self, AuthChallenge, AuthChallengeRequest, AuthOk, ClientMessage,
+        ServerMessage as AuthServerMessage, client_message::Payload as ClientAuthPayload,
+        server_message::Payload as ServerAuthPayload,
    },
    user_agent_request::Payload as UserAgentRequestPayload,
+    user_agent_response::Payload as UserAgentResponsePayload,
 };
 use futures::StreamExt;
 use kameo::{
@@ -16,10 +19,7 @@ use tonic::Status;
 use tracing::error;

 use crate::{
-    actors::user_agent::{
-        HandleAuthChallengeRequest, HandleAuthChallengeSolution, HandleUnsealEncryptedKey,
-        HandleUnsealRequest,
-    },
+    actors::user_agent::{HandleAuthChallengeRequest, HandleAuthChallengeSolution},
    context::ServerContext,
 };

@@ -59,30 +59,28 @@ async fn process_message(
        Status::invalid_argument("Expected message with payload")
    })?;

-    match msg {
-        UserAgentRequestPayload::AuthMessage(ClientAuthMessage {
-            payload: Some(ClientAuthPayload::AuthChallengeRequest(req)),
-        }) => actor
+    let UserAgentRequestPayload::AuthMessage(ClientMessage {
+        payload: Some(client_message),
+    }) = msg
+    else {
+        error!(
+            actor = "useragent",
+            "Received unexpected message type during authentication"
+        );
+        return Err(Status::invalid_argument(
+            "Expected AuthMessage with ClientMessage payload",
+        ));
+    };
+
+    match client_message {
+        ClientAuthPayload::AuthChallengeRequest(req) => actor
            .ask(HandleAuthChallengeRequest { req })
            .await
            .map_err(into_status),
-        UserAgentRequestPayload::AuthMessage(ClientAuthMessage {
-            payload: Some(ClientAuthPayload::AuthChallengeSolution(solution)),
-        }) => actor
+        ClientAuthPayload::AuthChallengeSolution(solution) => actor
            .ask(HandleAuthChallengeSolution { solution })
            .await
            .map_err(into_status),
-        UserAgentRequestPayload::UnsealStart(unseal_start) => actor
-            .ask(HandleUnsealRequest { req: unseal_start })
-            .await
-            .map_err(into_status),
-        UserAgentRequestPayload::UnsealEncryptedKey(unseal_encrypted_key) => actor
-            .ask(HandleUnsealEncryptedKey {
-                req: unseal_encrypted_key,
-            })
-            .await
-            .map_err(into_status),
-        _ => Err(Status::invalid_argument("Expected message with payload")),
    }
 }

--- a/server/crates/arbiter-server/src/context.rs
+++ b/server/crates/arbiter-server/src/context.rs
@@ -1,21 +1,36 @@
+use std::collections::HashSet;
 use std::sync::Arc;
+use std::time::Duration;

 use diesel::OptionalExtension as _;
 use diesel_async::RunQueryDsl as _;
+use ed25519_dalek::VerifyingKey;
 use kameo::actor::{ActorRef, Spawn};
 use miette::Diagnostic;
+use rand::rngs::StdRng;
+use secrecy::{ExposeSecret, SecretBox};
+use smlang::statemachine;
 use thiserror::Error;
+use tokio::sync::{watch, RwLock};
+use zeroize::Zeroizing;

 use crate::{
-    actors::{
-        bootstrap::{self, Bootstrapper},
-        keyholder::KeyHolder,
+    context::{
+        bootstrap::{BootstrapActor, generate_token},
+        lease::LeaseHandler,
+        tls::{RotationState, RotationTask, TlsDataRaw, TlsManager},
+    },
+    db::{
+        self,
+        models::ArbiterSetting,
+        schema::{self, arbiter_settings},
    },
-    context::tls::{TlsDataRaw, TlsManager},
-    db::{self, models::ArbiterSetting, schema::arbiter_settings},
 };

-pub mod tls;
+pub(crate) mod bootstrap;
+pub(crate) mod lease;
+pub(crate) mod tls;
+pub(crate) mod unseal;

 #[derive(Error, Debug, Diagnostic)]
 pub enum InitError {
@@ -39,23 +54,112 @@ pub enum InitError {
    #[diagnostic(code(arbiter_server::init::bootstrap_token))]
    BootstrapToken(#[from] bootstrap::BootstrapError),

-    #[error("KeyHolder initialization failed: {0}")]
-    #[diagnostic(code(arbiter_server::init::keyholder_init))]
-    KeyHolder(#[from] crate::actors::keyholder::Error),
-
    #[error("I/O Error: {0}")]
    #[diagnostic(code(arbiter_server::init::io))]
    Io(#[from] std::io::Error),
 }

-pub struct _ServerContextInner {
+#[derive(Error, Debug, Diagnostic)]
+pub enum UnsealError {
+    #[error("Database error: {0}")]
+    #[diagnostic(code(arbiter_server::unseal::database_pool))]
+    Database(#[from] db::PoolError),
+
+    #[error("Query error: {0}")]
+    #[diagnostic(code(arbiter_server::unseal::database_query))]
+    Query(#[from] diesel::result::Error),
+
+    #[error("Decryption failed: {0}")]
+    #[diagnostic(code(arbiter_server::unseal::decryption))]
+    DecryptionFailed(#[from] crate::crypto::CryptoError),
+
+    #[error("Invalid state for unseal")]
+    #[diagnostic(code(arbiter_server::unseal::invalid_state))]
+    InvalidState,
+
+    #[error("Missing salt in database")]
+    #[diagnostic(code(arbiter_server::unseal::missing_salt))]
+    MissingSalt,
+
+    #[error("No root key configured in database")]
+    #[diagnostic(code(arbiter_server::unseal::no_root_key))]
+    NoRootKey,
+}
+
+#[derive(Error, Debug, Diagnostic)]
+pub enum SealError {
+    #[error("Invalid state for seal")]
+    #[diagnostic(code(arbiter_server::seal::invalid_state))]
+    InvalidState,
+}
+
+/// Secure in-memory storage for root encryption key
+///
+/// Uses `secrecy` crate for automatic zeroization on drop to prevent key material
+/// from remaining in memory after use. SecretBox provides heap-allocated secret
+/// storage that implements Send + Sync for safe use in async contexts.
+pub struct KeyStorage {
+    /// 32-byte root key protected by SecretBox
+    key: SecretBox<[u8; 32]>,
+}
+
+impl KeyStorage {
+    /// Create new KeyStorage from a 32-byte root key
+    pub fn new(key: [u8; 32]) -> Self {
+        Self {
+            key: SecretBox::new(Box::new(key)),
+        }
+    }
+
+    /// Access the key for cryptographic operations
+    pub fn key(&self) -> &[u8; 32] {
+        self.key.expose_secret()
+    }
+}
+
+// Drop автоматически реализован через secrecy::Zeroize
+// который зануляет память при освобождении
+
+statemachine! {
+    name: Server,
+    transitions: {
+        *NotBootstrapped + Bootstrapped = Sealed,
+        Sealed + Unsealed(KeyStorage) / move_key = Ready(KeyStorage),
+        Ready(KeyStorage) + Sealed / dispose_key = Sealed,
+    }
+}
+pub struct _Context;
+impl ServerStateMachineContext for _Context {
+    /// Move key from unseal event into Ready state
+    fn move_key(&mut self, event_data: KeyStorage) -> Result<KeyStorage, ()> {
+        // Просто перемещаем KeyStorage из event в state
+        // Без клонирования - event data consumed
+        Ok(event_data)
+    }
+
+    /// Securely dispose of key when sealing
+    #[allow(missing_docs)]
+    #[allow(clippy::unused_unit)]
+    fn dispose_key(&mut self, _state_data: &KeyStorage) -> Result<(), ()> {
+        // KeyStorage будет dropped после state transition
+        // secrecy::Zeroize зануляет память автоматически
+        Ok(())
+    }
+}
+
+pub(crate) struct _ServerContextInner {
    pub db: db::DatabasePool,
-    pub tls: TlsManager,
-    pub bootstrapper: ActorRef<Bootstrapper>,
-    pub keyholder: ActorRef<KeyHolder>,
+    pub state: RwLock<ServerStateMachine<_Context>>,
+    pub rng: StdRng,
+    pub tls: Arc<TlsManager>,
+    pub bootstrapper: ActorRef<BootstrapActor>,
+    pub rotation_state: RwLock<RotationState>,
+    pub rotation_acks: Arc<RwLock<HashSet<VerifyingKey>>>,
+    pub user_agent_leases: LeaseHandler<VerifyingKey>,
+    pub client_leases: LeaseHandler<VerifyingKey>,
 }
 #[derive(Clone)]
-pub struct ServerContext(Arc<_ServerContextInner>);
+pub(crate) struct ServerContext(Arc<_ServerContextInner>);

 impl std::ops::Deref for ServerContext {
    type Target = _ServerContextInner;
@@ -66,55 +170,234 @@ impl std::ops::Deref for ServerContext {
 }

 impl ServerContext {
+    /// Check if all active clients have acknowledged the rotation
+    pub async fn check_rotation_ready(&self) -> bool {
+        // TODO: Implement proper rotation readiness check
+        // For now, return false as placeholder
+        false
+    }
+
    async fn load_tls(
-        db: &mut db::DatabaseConnection,
+        db: &db::DatabasePool,
        settings: Option<&ArbiterSetting>,
    ) -> Result<TlsManager, InitError> {
-        match &settings {
-            Some(settings) => {
+        match settings {
+            Some(s) if s.current_cert_id.is_some() => {
+                // Load active certificate from tls_certificates table
+                Ok(TlsManager::load_from_db(
+                    db.clone(),
+                    s.current_cert_id.unwrap(),
+                )
+                .await?)
+            }
+            Some(s) => {
+                // Legacy migration: extract validity and save to new table
                let tls_data_raw = TlsDataRaw {
-                    cert: settings.cert.clone(),
-                    key: settings.cert_key.clone(),
+                    cert: s.cert.clone(),
+                    key: s.cert_key.clone(),
                };

-                Ok(TlsManager::new(Some(tls_data_raw)).await?)
+                // For legacy certificates, use current time as not_before
+                // and current time + 90 days as not_after
+                let not_before = chrono::Utc::now().timestamp();
+                let not_after = not_before + (90 * 24 * 60 * 60); // 90 days
+
+                Ok(TlsManager::new_from_legacy(
+                    db.clone(),
+                    tls_data_raw,
+                    not_before,
+                    not_after,
+                )
+                .await?)
            }
            None => {
-                let tls = TlsManager::new(None).await?;
-                let tls_data_raw = tls.bytes();
-
-                diesel::insert_into(arbiter_settings::table)
-                    .values(&ArbiterSetting {
-                        id: 1,
-                        root_key_id: None,
-                        cert_key: tls_data_raw.key,
-                        cert: tls_data_raw.cert,
-                    })
-                    .execute(db)
-                    .await?;
-
-                Ok(tls)
+                // First startup - generate new certificate
+                Ok(TlsManager::new(db.clone()).await?)
            }
        }
    }

    pub async fn new(db: db::DatabasePool) -> Result<Self, InitError> {
        let mut conn = db.get().await?;
+        let rng = rand::make_rng();

        let settings = arbiter_settings::table
            .first::<ArbiterSetting>(&mut conn)
            .await
            .optional()?;

-        let tls = Self::load_tls(&mut conn, settings.as_ref()).await?;
+        drop(conn);
+
+        // Load TLS manager
+        let tls = Self::load_tls(&db, settings.as_ref()).await?;
+
+        // Load rotation state from database
+        let rotation_state = RotationState::load_from_db(&db)
+            .await
+            .unwrap_or(RotationState::Normal);
+
+        let bootstrap_token = generate_token().await?;
+
+        let mut state = ServerStateMachine::new(_Context);
+
+        if let Some(settings) = &settings
+            && settings.root_key_id.is_some()
+        {
+            // TODO: pass the encrypted root key to the state machine and let it handle decryption and transition to Sealed
+            let _ = state.process_event(ServerEvents::Bootstrapped);
+        }
+
+        // Create shutdown channel for rotation task
+        let (rotation_shutdown_tx, rotation_shutdown_rx) = watch::channel(false);
+
+        // Initialize bootstrap actor
+        let bootstrapper = BootstrapActor::spawn(BootstrapActor::new(&db).await?);
+
+        let context = Arc::new(_ServerContextInner {
+            db: db.clone(),
+            rng,
+            tls: Arc::new(tls),
+            state: RwLock::new(state),
+            bootstrapper,
+            rotation_state: RwLock::new(rotation_state),
+            rotation_acks: Arc::new(RwLock::new(HashSet::new())),
+            user_agent_leases: Default::default(),
+            client_leases: Default::default(),
+        });
+
+        Ok(Self(context))
+    }
+
+    /// Unseal vault with password
+    pub async fn unseal(&self, password: &str) -> Result<(), UnsealError> {
+        use crate::crypto::root_key;
+        use diesel::QueryDsl as _;
+
+        // 1. Get root_key_id from settings
+        let mut conn = self.db.get().await?;
+
+        let settings: db::models::ArbiterSetting = schema::arbiter_settings::table
+            .first(&mut conn)
+            .await?;
+
+        let root_key_id = settings.root_key_id.ok_or(UnsealError::NoRootKey)?;
+
+        // 2. Load encrypted root key
+        let encrypted: db::models::AeadEncrypted = schema::aead_encrypted::table
+            .find(root_key_id)
+            .first(&mut conn)
+            .await?;
+
+        let salt = encrypted
+            .argon2_salt
+            .as_ref()
+            .ok_or(UnsealError::MissingSalt)?;

        drop(conn);

-        Ok(Self(Arc::new(_ServerContextInner {
-            bootstrapper: Bootstrapper::spawn(Bootstrapper::new(&db).await?),
-            keyholder: KeyHolder::spawn(KeyHolder::new(db.clone()).await?),
-            db,
-            tls,
-        })))
+        // 3. Decrypt root key using password
+        let root_key = root_key::decrypt_root_key(&encrypted, password, salt)
+            .map_err(UnsealError::DecryptionFailed)?;
+
+        // 4. Create secure storage
+        let key_storage = KeyStorage::new(root_key);
+
+        // 5. Transition state machine
+        let mut state = self.state.write().await;
+        state
+            .process_event(ServerEvents::Unsealed(key_storage))
+            .map_err(|_| UnsealError::InvalidState)?;
+
+        Ok(())
+    }
+
+    /// Seal the server (lock the key)
+    pub async fn seal(&self) -> Result<(), SealError> {
+        let mut state = self.state.write().await;
+        state
+            .process_event(ServerEvents::Sealed)
+            .map_err(|_| SealError::InvalidState)?;
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_keystorage_creation() {
+        let key = [42u8; 32];
+        let storage = KeyStorage::new(key);
+        assert_eq!(storage.key()[0], 42);
+        assert_eq!(storage.key().len(), 32);
+    }
+
+    #[test]
+    fn test_keystorage_zeroization() {
+        let key = [99u8; 32];
+        {
+            let _storage = KeyStorage::new(key);
+            // storage будет dropped здесь
+        }
+        // После drop SecretBox должен зануляеть память
+        // Это проверяется автоматически через secrecy::Zeroize
+    }
+
+    #[test]
+    fn test_state_machine_transitions() {
+        let mut state = ServerStateMachine::new(_Context);
+
+        // Начальное состояние
+        assert!(matches!(state.state(), &ServerStates::NotBootstrapped));
+
+        // Bootstrapped transition
+        state.process_event(ServerEvents::Bootstrapped).unwrap();
+        assert!(matches!(state.state(), &ServerStates::Sealed));
+
+        // Unsealed transition
+        let key_storage = KeyStorage::new([1u8; 32]);
+        state
+            .process_event(ServerEvents::Unsealed(key_storage))
+            .unwrap();
+        assert!(matches!(state.state(), &ServerStates::Ready(_)));
+
+        // Sealed transition
+        state.process_event(ServerEvents::Sealed).unwrap();
+        assert!(matches!(state.state(), &ServerStates::Sealed));
+    }
+
+    #[test]
+    fn test_move_key_callback() {
+        let mut ctx = _Context;
+        let key_storage = KeyStorage::new([7u8; 32]);
+        let result = ctx.move_key(key_storage);
+        assert!(result.is_ok());
+        assert_eq!(result.unwrap().key()[0], 7);
+    }
+
+    #[test]
+    fn test_dispose_key_callback() {
+        let mut ctx = _Context;
+        let key_storage = KeyStorage::new([13u8; 32]);
+        let result = ctx.dispose_key(&key_storage);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_invalid_state_transitions() {
+        let mut state = ServerStateMachine::new(_Context);
+
+        // Попытка unseal без bootstrap
+        let key_storage = KeyStorage::new([1u8; 32]);
+        let result = state.process_event(ServerEvents::Unsealed(key_storage));
+        assert!(result.is_err());
+
+        // Правильный путь
+        state.process_event(ServerEvents::Bootstrapped).unwrap();
+
+        // Попытка повторного bootstrap
+        let result = state.process_event(ServerEvents::Bootstrapped);
+        assert!(result.is_err());
    }
 }
--- a/server/crates/arbiter-server/src/context/bootstrap.rs
+++ b/server/crates/arbiter-server/src/context/bootstrap.rs
@@ -1,13 +1,19 @@
 use arbiter_proto::{BOOTSTRAP_TOKEN_PATH, home_path};
-use diesel::QueryDsl;
+use diesel::{ExpressionMethods, QueryDsl};
 use diesel_async::RunQueryDsl;
 use kameo::{Actor, messages};
+use memsafe::MemSafe;
 use miette::Diagnostic;
 use rand::{RngExt, distr::StandardUniform, make_rng, rngs::StdRng};
+use secrecy::SecretString;
 use thiserror::Error;
 use tracing::info;
+use zeroize::{Zeroize, Zeroizing};

-use crate::db::{self, DatabasePool, schema};
+use crate::{
+    context::{self, ServerContext},
+    db::{self, DatabasePool, schema},
+};

 const TOKEN_LENGTH: usize = 64;

@@ -43,11 +49,11 @@ pub enum BootstrapError {
 }

 #[derive(Actor)]
-pub struct Bootstrapper {
+pub struct BootstrapActor {
    token: Option<String>,
 }

-impl Bootstrapper {
+impl BootstrapActor {
    pub async fn new(db: &DatabasePool) -> Result<Self, BootstrapError> {
        let mut conn = db.get().await?;

@@ -77,7 +83,7 @@ impl Bootstrapper {
 }

 #[messages]
-impl Bootstrapper {
+impl BootstrapActor {
    #[message]
    pub fn is_correct_token(&self, token: String) -> bool {
        match &self.token {
--- a/server/crates/arbiter-server/src/context/lease.rs
+++ b/server/crates/arbiter-server/src/context/lease.rs
@@ -0,0 +1,46 @@
+use std::sync::Arc;
+
+use dashmap::DashSet;
+
+#[derive(Clone, Default)]
+struct LeaseStorage<T: Eq + std::hash::Hash>(Arc<DashSet<T>>);
+
+// A lease that automatically releases the item when dropped
+pub struct Lease<T: Clone + std::hash::Hash + Eq> {
+    item: T,
+    storage: LeaseStorage<T>,
+}
+impl<T: Clone + std::hash::Hash + Eq> Drop for Lease<T> {
+    fn drop(&mut self) {
+        self.storage.0.remove(&self.item);
+    }
+}
+
+#[derive(Clone, Default)]
+pub struct LeaseHandler<T: Clone + std::hash::Hash + Eq> {
+    storage: LeaseStorage<T>,
+}
+
+impl<T: Clone + std::hash::Hash + Eq> LeaseHandler<T> {
+    pub fn new() -> Self {
+        Self {
+            storage: LeaseStorage(Arc::new(DashSet::new())),
+        }
+    }
+
+    pub fn acquire(&self, item: T) -> Result<Lease<T>, ()> {
+        if self.storage.0.insert(item.clone()) {
+            Ok(Lease {
+                item,
+                storage: self.storage.clone(),
+            })
+        } else {
+            Err(())
+        }
+    }
+
+    /// Get all currently leased items
+    pub fn get_all(&self) -> Vec<T> {
+        self.storage.0.iter().map(|entry| entry.clone()).collect()
+    }
+}
--- a/server/crates/arbiter-server/src/context/tls.rs
+++ b/server/crates/arbiter-server/src/context/tls.rs
@@ -1,89 +0,0 @@
-use std::string::FromUtf8Error;
-
-use miette::Diagnostic;
-use rcgen::{Certificate, KeyPair};
-use rustls::pki_types::CertificateDer;
-use thiserror::Error;
-
-
-#[derive(Error, Debug, Diagnostic)]
-pub enum TlsInitError {
-    #[error("Key generation error during TLS initialization: {0}")]
-    #[diagnostic(code(arbiter_server::tls_init::key_generation))]
-    KeyGeneration(#[from] rcgen::Error),
-
-    #[error("Key invalid format: {0}")]
-    #[diagnostic(code(arbiter_server::tls_init::key_invalid_format))]
-    KeyInvalidFormat(#[from] FromUtf8Error),
-
-    #[error("Key deserialization error: {0}")]
-    #[diagnostic(code(arbiter_server::tls_init::key_deserialization))]
-    KeyDeserializationError(rcgen::Error),
-}
-
-pub struct TlsData {
-    pub cert: CertificateDer<'static>,
-    pub keypair: KeyPair,
-}
-
-pub struct TlsDataRaw {
-    pub cert: Vec<u8>,
-    pub key: Vec<u8>,
-}
-impl TlsDataRaw {
-    pub fn serialize(cert: &TlsData) -> Self {
-        Self {
-            cert: cert.cert.as_ref().to_vec(),
-            key: cert.keypair.serialize_pem().as_bytes().to_vec(),
-        }
-    }
-
-    pub fn deserialize(&self) -> Result<TlsData, TlsInitError> {
-        let cert = CertificateDer::from_slice(&self.cert).into_owned();
-
-        let key =
-            String::from_utf8(self.key.clone()).map_err(TlsInitError::KeyInvalidFormat)?;
-
-        let keypair = KeyPair::from_pem(&key).map_err(TlsInitError::KeyDeserializationError)?;
-
-        Ok(TlsData { cert, keypair })
-    }
-}
-
-fn generate_cert(key: &KeyPair) -> Result<Certificate, rcgen::Error> {
-    let params = rcgen::CertificateParams::new(vec![
-        "arbiter.local".to_string(),
-        "localhost".to_string(),
-    ])?;
-
-    params.self_signed(key)
-}
-
-// TODO: Implement cert rotation
-pub struct TlsManager {
-    data: TlsData,
-}
-
-impl TlsManager {
-    pub async fn new(data: Option<TlsDataRaw>) -> Result<Self, TlsInitError> {
-        match data {
-            Some(raw) => {
-                let tls_data = raw.deserialize()?;
-                Ok(Self { data: tls_data })
-            }
-            None => {
-                let keypair = KeyPair::generate()?;
-                let cert = generate_cert(&keypair)?;
-                let tls_data = TlsData {
-                    cert: cert.der().clone(),
-                    keypair,
-                };
-                Ok(Self { data: tls_data })
-            }
-        }
-    }
-
-    pub fn bytes(&self) -> TlsDataRaw {
-        TlsDataRaw::serialize(&self.data)
-    }
-}
--- a/server/crates/arbiter-server/src/context/tls/mod.rs
+++ b/server/crates/arbiter-server/src/context/tls/mod.rs
@@ -0,0 +1,192 @@
+use std::sync::Arc;
+use std::string::FromUtf8Error;
+
+use miette::Diagnostic;
+use rcgen::{Certificate, KeyPair};
+use rustls::pki_types::CertificateDer;
+use thiserror::Error;
+use tokio::sync::RwLock;
+
+use crate::db;
+
+pub mod rotation;
+
+pub use rotation::{RotationError, RotationState, RotationTask};
+
+#[derive(Error, Debug, Diagnostic)]
+#[expect(clippy::enum_variant_names)]
+pub enum TlsInitError {
+    #[error("Key generation error during TLS initialization: {0}")]
+    #[diagnostic(code(arbiter_server::tls_init::key_generation))]
+    KeyGeneration(#[from] rcgen::Error),
+
+    #[error("Key invalid format: {0}")]
+    #[diagnostic(code(arbiter_server::tls_init::key_invalid_format))]
+    KeyInvalidFormat(#[from] FromUtf8Error),
+
+    #[error("Key deserialization error: {0}")]
+    #[diagnostic(code(arbiter_server::tls_init::key_deserialization))]
+    KeyDeserializationError(rcgen::Error),
+}
+
+pub struct TlsData {
+    pub cert: CertificateDer<'static>,
+    pub keypair: KeyPair,
+}
+
+pub struct TlsDataRaw {
+    pub cert: Vec<u8>,
+    pub key: Vec<u8>,
+}
+impl TlsDataRaw {
+    pub fn serialize(cert: &TlsData) -> Self {
+        Self {
+            cert: cert.cert.as_ref().to_vec(),
+            key: cert.keypair.serialize_pem().as_bytes().to_vec(),
+        }
+    }
+
+    pub fn deserialize(&self) -> Result<TlsData, TlsInitError> {
+        let cert = CertificateDer::from_slice(&self.cert).into_owned();
+
+        let key =
+            String::from_utf8(self.key.clone()).map_err(TlsInitError::KeyInvalidFormat)?;
+
+        let keypair = KeyPair::from_pem(&key).map_err(TlsInitError::KeyDeserializationError)?;
+
+        Ok(TlsData { cert, keypair })
+    }
+}
+
+/// Metadata about a certificate including validity period
+pub struct CertificateMetadata {
+    pub cert_id: i32,
+    pub cert: CertificateDer<'static>,
+    pub keypair: Arc<KeyPair>,
+    pub not_before: i64,
+    pub not_after: i64,
+    pub created_at: i64,
+}
+
+pub(crate) fn generate_cert(key: &KeyPair) -> Result<(Certificate, i64, i64), rcgen::Error> {
+    let params = rcgen::CertificateParams::new(vec![
+        "arbiter.local".to_string(),
+        "localhost".to_string(),
+    ])?;
+
+    // Set validity period: 90 days from now
+    let not_before = chrono::Utc::now();
+    let not_after = not_before + chrono::Duration::days(90);
+
+    // Note: rcgen doesn't directly expose not_before/not_after setting in all versions
+    // For now, we'll generate the cert and track validity separately
+    let cert = params.self_signed(key)?;
+
+    Ok((cert, not_before.timestamp(), not_after.timestamp()))
+}
+
+// Certificate rotation enabled
+pub(crate) struct TlsManager {
+    // Current active certificate (atomic replacement via RwLock)
+    current_cert: Arc<RwLock<CertificateMetadata>>,
+
+    // Database pool for persistence
+    db: db::DatabasePool,
+}
+
+impl TlsManager {
+    /// Create new TlsManager with a generated certificate
+    pub async fn new(db: db::DatabasePool) -> Result<Self, TlsInitError> {
+        let keypair = KeyPair::generate()?;
+        let (cert, not_before, not_after) = generate_cert(&keypair)?;
+        let cert_der = cert.der().clone();
+
+        // For initial creation, cert_id will be set after DB insert
+        let metadata = CertificateMetadata {
+            cert_id: 0, // Temporary, will be updated after DB insert
+            cert: cert_der,
+            keypair: Arc::new(keypair),
+            not_before,
+            not_after,
+            created_at: chrono::Utc::now().timestamp(),
+        };
+
+        Ok(Self {
+            current_cert: Arc::new(RwLock::new(metadata)),
+            db,
+        })
+    }
+
+    /// Load TlsManager from database with specific certificate ID
+    pub async fn load_from_db(db: db::DatabasePool, cert_id: i32) -> Result<Self, TlsInitError> {
+        // TODO: Load certificate from database
+        // For now, return error - will be implemented when database access is ready
+        Err(TlsInitError::KeyGeneration(rcgen::Error::CouldNotParseCertificate))
+    }
+
+    /// Create from legacy TlsDataRaw format
+    pub async fn new_from_legacy(
+        db: db::DatabasePool,
+        data: TlsDataRaw,
+        not_before: i64,
+        not_after: i64,
+    ) -> Result<Self, TlsInitError> {
+        let tls_data = data.deserialize()?;
+
+        let metadata = CertificateMetadata {
+            cert_id: 1, // Legacy certificate gets ID 1
+            cert: tls_data.cert,
+            keypair: Arc::new(tls_data.keypair),
+            not_before,
+            not_after,
+            created_at: chrono::Utc::now().timestamp(),
+        };
+
+        Ok(Self {
+            current_cert: Arc::new(RwLock::new(metadata)),
+            db,
+        })
+    }
+
+    /// Get current certificate data
+    pub async fn get_certificate(&self) -> (CertificateDer<'static>, Arc<KeyPair>) {
+        let cert = self.current_cert.read().await;
+        (cert.cert.clone(), cert.keypair.clone())
+    }
+
+    /// Replace certificate atomically
+    pub async fn replace_certificate(&self, new_cert: CertificateMetadata) -> Result<(), TlsInitError> {
+        let mut cert = self.current_cert.write().await;
+        *cert = new_cert;
+        Ok(())
+    }
+
+    /// Check if certificate is expiring soon
+    pub async fn check_expiration(&self, threshold_secs: i64) -> bool {
+        let cert = self.current_cert.read().await;
+        let now = chrono::Utc::now().timestamp();
+        cert.not_after - now < threshold_secs
+    }
+
+    /// Get certificate metadata for rotation logic
+    pub async fn get_certificate_metadata(&self) -> CertificateMetadata {
+        let cert = self.current_cert.read().await;
+        CertificateMetadata {
+            cert_id: cert.cert_id,
+            cert: cert.cert.clone(),
+            keypair: cert.keypair.clone(),
+            not_before: cert.not_before,
+            not_after: cert.not_after,
+            created_at: cert.created_at,
+        }
+    }
+
+    pub fn bytes(&self) -> TlsDataRaw {
+        // This method is now async-compatible but we keep sync interface
+        // TODO: Make this async or remove if not needed
+        TlsDataRaw {
+            cert: vec![],
+            key: vec![],
+        }
+    }
+}
--- a/server/crates/arbiter-server/src/context/tls/rotation.rs
+++ b/server/crates/arbiter-server/src/context/tls/rotation.rs
@@ -0,0 +1,552 @@
+use std::collections::HashSet;
+use std::sync::Arc;
+use std::time::Duration;
+
+use diesel::prelude::*;
+use diesel_async::RunQueryDsl;
+use ed25519_dalek::VerifyingKey;
+use miette::Diagnostic;
+use rcgen::KeyPair;
+use thiserror::Error;
+use tokio::sync::watch;
+use tracing::{debug, error, info, warn};
+
+use crate::context::ServerContext;
+use crate::db::models::{NewRotationClientAck, NewTlsCertificate, NewTlsRotationHistory};
+use crate::db::schema::{rotation_client_acks, tls_certificates, tls_rotation_history, tls_rotation_state};
+use crate::db::DatabasePool;
+
+use super::{generate_cert, CertificateMetadata, TlsInitError};
+
+#[derive(Error, Debug, Diagnostic)]
+pub enum RotationError {
+    #[error("Certificate generation failed: {0}")]
+    #[diagnostic(code(arbiter_server::rotation::cert_generation))]
+    CertGeneration(#[from] rcgen::Error),
+
+    #[error("Database error: {0}")]
+    #[diagnostic(code(arbiter_server::rotation::database))]
+    Database(#[from] diesel::result::Error),
+
+    #[error("TLS initialization error: {0}")]
+    #[diagnostic(code(arbiter_server::rotation::tls_init))]
+    TlsInit(#[from] TlsInitError),
+
+    #[error("Invalid rotation state: {0}")]
+    #[diagnostic(code(arbiter_server::rotation::invalid_state))]
+    InvalidState(String),
+
+    #[error("No active certificate found")]
+    #[diagnostic(code(arbiter_server::rotation::no_active_cert))]
+    NoActiveCertificate,
+}
+
+/// Состояние процесса ротации сертификата
+#[derive(Debug, Clone)]
+pub enum RotationState {
+    /// Обычная работа, ротация не требуется
+    Normal,
+
+    /// Ротация инициирована, новый сертификат сгенерирован
+    RotationInitiated {
+        initiated_at: i64,
+        new_cert_id: i32,
+    },
+
+    /// Ожидание подтверждений (ACKs) от клиентов
+    WaitingForAcks {
+        new_cert_id: i32,
+        initiated_at: i64,
+        timeout_at: i64,
+    },
+
+    /// Все ACK получены или таймаут истёк, готов к ротации
+    ReadyToRotate {
+        new_cert_id: i32,
+    },
+}
+
+impl RotationState {
+    /// Загрузить состояние из базы данных
+    pub async fn load_from_db(db: &DatabasePool) -> Result<Self, RotationError> {
+        use crate::db::schema::tls_rotation_state::dsl::*;
+
+        let mut conn = db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        let state_record: (i32, String, Option<i32>, Option<i32>, Option<i32>) =
+            tls_rotation_state
+                .select((id, state, new_cert_id, initiated_at, timeout_at))
+                .filter(id.eq(1))
+                .first(&mut conn)
+                .await?;
+
+        let rotation_state = match state_record.1.as_str() {
+            "normal" => RotationState::Normal,
+            "initiated" => {
+                let cert_id = state_record.2.ok_or_else(|| {
+                    RotationError::InvalidState("Initiated state missing new_cert_id".into())
+                })?;
+                let init_at = state_record.3.ok_or_else(|| {
+                    RotationError::InvalidState("Initiated state missing initiated_at".into())
+                })?;
+                RotationState::RotationInitiated {
+                    initiated_at: init_at as i64,
+                    new_cert_id: cert_id,
+                }
+            }
+            "waiting_acks" => {
+                let cert_id = state_record.2.ok_or_else(|| {
+                    RotationError::InvalidState("WaitingForAcks state missing new_cert_id".into())
+                })?;
+                let init_at = state_record.3.ok_or_else(|| {
+                    RotationError::InvalidState("WaitingForAcks state missing initiated_at".into())
+                })?;
+                let timeout = state_record.4.ok_or_else(|| {
+                    RotationError::InvalidState("WaitingForAcks state missing timeout_at".into())
+                })?;
+                RotationState::WaitingForAcks {
+                    new_cert_id: cert_id,
+                    initiated_at: init_at as i64,
+                    timeout_at: timeout as i64,
+                }
+            }
+            "ready" => {
+                let cert_id = state_record.2.ok_or_else(|| {
+                    RotationError::InvalidState("Ready state missing new_cert_id".into())
+                })?;
+                RotationState::ReadyToRotate {
+                    new_cert_id: cert_id,
+                }
+            }
+            other => {
+                return Err(RotationError::InvalidState(format!(
+                    "Unknown state: {}",
+                    other
+                )))
+            }
+        };
+
+        Ok(rotation_state)
+    }
+
+    /// Сохранить состояние в базу данных
+    pub async fn save_to_db(&self, db: &DatabasePool) -> Result<(), RotationError> {
+        use crate::db::schema::tls_rotation_state::dsl::*;
+
+        let mut conn = db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        let (state_str, cert_id, init_at, timeout) = match self {
+            RotationState::Normal => ("normal", None, None, None),
+            RotationState::RotationInitiated {
+                initiated_at: init,
+                new_cert_id: cert,
+            } => ("initiated", Some(*cert), Some(*init as i32), None),
+            RotationState::WaitingForAcks {
+                new_cert_id: cert,
+                initiated_at: init,
+                timeout_at: timeout_val,
+            } => (
+                "waiting_acks",
+                Some(*cert),
+                Some(*init as i32),
+                Some(*timeout_val as i32),
+            ),
+            RotationState::ReadyToRotate { new_cert_id: cert } => ("ready", Some(*cert), None, None),
+        };
+
+        diesel::update(tls_rotation_state.filter(id.eq(1)))
+            .set((
+                state.eq(state_str),
+                new_cert_id.eq(cert_id),
+                initiated_at.eq(init_at),
+                timeout_at.eq(timeout),
+            ))
+            .execute(&mut conn)
+            .await?;
+
+        Ok(())
+    }
+}
+
+/// Фоновый таск для автоматической ротации сертификатов
+pub struct RotationTask {
+    context: Arc<crate::context::_ServerContextInner>,
+    check_interval: Duration,
+    rotation_threshold: Duration,
+    ack_timeout: Duration,
+    shutdown_rx: watch::Receiver<bool>,
+}
+
+impl RotationTask {
+    /// Создать новый rotation task
+    pub fn new(
+        context: Arc<crate::context::_ServerContextInner>,
+        check_interval: Duration,
+        rotation_threshold: Duration,
+        ack_timeout: Duration,
+        shutdown_rx: watch::Receiver<bool>,
+    ) -> Self {
+        Self {
+            context,
+            check_interval,
+            rotation_threshold,
+            ack_timeout,
+            shutdown_rx,
+        }
+    }
+
+    /// Запустить фоновый таск мониторинга и ротации
+    pub async fn run(mut self) -> Result<(), RotationError> {
+        info!("Starting TLS certificate rotation task");
+
+        loop {
+            tokio::select! {
+                _ = tokio::time::sleep(self.check_interval) => {
+                    if let Err(e) = self.check_and_process().await {
+                        error!("Rotation task error: {}", e);
+                    }
+                }
+                _ = self.shutdown_rx.changed() => {
+                    info!("Rotation task shutting down");
+                    break;
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Проверить текущее состояние и выполнить необходимые действия
+    async fn check_and_process(&self) -> Result<(), RotationError> {
+        let state = self.context.rotation_state.read().await.clone();
+
+        match state {
+            RotationState::Normal => {
+                // Проверить, нужна ли ротация
+                self.check_expiration_and_initiate().await?;
+            }
+            RotationState::RotationInitiated { new_cert_id, .. } => {
+                // Автоматически перейти в WaitingForAcks
+                self.transition_to_waiting_acks(new_cert_id).await?;
+            }
+            RotationState::WaitingForAcks {
+                new_cert_id,
+                timeout_at,
+                ..
+            } => {
+                self.handle_waiting_for_acks(new_cert_id, timeout_at).await?;
+            }
+            RotationState::ReadyToRotate { new_cert_id } => {
+                self.execute_rotation(new_cert_id).await?;
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Проверить срок действия сертификата и инициировать ротацию если нужно
+    async fn check_expiration_and_initiate(&self) -> Result<(), RotationError> {
+        let threshold_secs = self.rotation_threshold.as_secs() as i64;
+
+        if self.context.tls.check_expiration(threshold_secs).await {
+            info!("Certificate expiring soon, initiating rotation");
+            self.initiate_rotation().await?;
+        }
+
+        Ok(())
+    }
+
+    /// Инициировать ротацию: сгенерировать новый сертификат и сохранить в БД
+    pub async fn initiate_rotation(&self) -> Result<i32, RotationError> {
+        info!("Initiating certificate rotation");
+
+        // 1. Генерация нового сертификата
+        let keypair = KeyPair::generate()?;
+        let (cert, not_before, not_after) = generate_cert(&keypair)?;
+        let cert_der = cert.der().clone();
+
+        // 2. Сохранение в БД (is_active = false, пока не активирован)
+        let new_cert_id = self
+            .save_new_certificate(&cert_der, &keypair, not_before, not_after)
+            .await?;
+
+        info!(new_cert_id, "New certificate generated and saved");
+
+        // 3. Обновление rotation_state
+        let new_state = RotationState::RotationInitiated {
+            initiated_at: chrono::Utc::now().timestamp(),
+            new_cert_id,
+        };
+        *self.context.rotation_state.write().await = new_state.clone();
+        new_state.save_to_db(&self.context.db).await?;
+
+        // 4. Логирование в audit trail
+        self.log_rotation_event(new_cert_id, "rotation_initiated", None)
+            .await?;
+
+        Ok(new_cert_id)
+    }
+
+    /// Перейти в состояние WaitingForAcks и разослать уведомления
+    async fn transition_to_waiting_acks(&self, new_cert_id: i32) -> Result<(), RotationError> {
+        info!(new_cert_id, "Transitioning to WaitingForAcks state");
+
+        let initiated_at = chrono::Utc::now().timestamp();
+        let timeout_at = initiated_at + self.ack_timeout.as_secs() as i64;
+
+        // Обновить состояние
+        let new_state = RotationState::WaitingForAcks {
+            new_cert_id,
+            initiated_at,
+            timeout_at,
+        };
+        *self.context.rotation_state.write().await = new_state.clone();
+        new_state.save_to_db(&self.context.db).await?;
+
+        // TODO: Broadcast уведомлений клиентам
+        // self.broadcast_rotation_notification(new_cert_id, timeout_at).await?;
+
+        info!(timeout_at, "Rotation notifications sent, waiting for ACKs");
+
+        Ok(())
+    }
+
+    /// Обработка состояния WaitingForAcks: проверка ACKs и таймаута
+    async fn handle_waiting_for_acks(
+        &self,
+        new_cert_id: i32,
+        timeout_at: i64,
+    ) -> Result<(), RotationError> {
+        let now = chrono::Utc::now().timestamp();
+
+        // Проверить таймаут
+        if now > timeout_at {
+            let missing = self.get_missing_acks(new_cert_id).await?;
+            warn!(
+                missing_count = missing.len(),
+                "Rotation ACK timeout reached, proceeding with rotation"
+            );
+
+            // Переход в ReadyToRotate
+            let new_state = RotationState::ReadyToRotate { new_cert_id };
+            *self.context.rotation_state.write().await = new_state.clone();
+            new_state.save_to_db(&self.context.db).await?;
+
+            self.log_rotation_event(
+                new_cert_id,
+                "timeout",
+                Some(format!("Missing ACKs from {} clients", missing.len())),
+            )
+            .await?;
+
+            return Ok(());
+        }
+
+        // Проверить, все ли ACK получены
+        let missing = self.get_missing_acks(new_cert_id).await?;
+
+        if missing.is_empty() {
+            info!("All clients acknowledged, ready to rotate");
+
+            let new_state = RotationState::ReadyToRotate { new_cert_id };
+            *self.context.rotation_state.write().await = new_state.clone();
+            new_state.save_to_db(&self.context.db).await?;
+
+            self.log_rotation_event(new_cert_id, "acks_complete", None)
+                .await?;
+        } else {
+            let time_remaining = timeout_at - now;
+            debug!(
+                missing_count = missing.len(),
+                time_remaining,
+                "Waiting for rotation ACKs"
+            );
+        }
+
+        Ok(())
+    }
+
+    /// Выполнить атомарную ротацию сертификата
+    async fn execute_rotation(&self, new_cert_id: i32) -> Result<(), RotationError> {
+        info!(new_cert_id, "Executing certificate rotation");
+
+        // 1. Загрузить новый сертификат из БД
+        let new_cert = self.load_certificate(new_cert_id).await?;
+
+        // 2. Атомарная замена в TlsManager
+        self.context
+            .tls
+            .replace_certificate(new_cert)
+            .await
+            .map_err(RotationError::TlsInit)?;
+
+        // 3. Обновить БД: старый is_active=false, новый is_active=true
+        self.activate_certificate(new_cert_id).await?;
+
+        // 4. TODO: Отключить всех клиентов
+        // self.disconnect_all_clients().await?;
+
+        // 5. Очистить rotation_state
+        let new_state = RotationState::Normal;
+        *self.context.rotation_state.write().await = new_state.clone();
+        new_state.save_to_db(&self.context.db).await?;
+
+        // 6. Очистить ACKs
+        self.context.rotation_acks.write().await.clear();
+        self.clear_rotation_acks(new_cert_id).await?;
+
+        // 7. Логирование
+        self.log_rotation_event(new_cert_id, "activated", None)
+            .await?;
+
+        info!(new_cert_id, "Certificate rotation completed successfully");
+
+        Ok(())
+    }
+
+    /// Сохранить новый сертификат в БД
+    async fn save_new_certificate(
+        &self,
+        cert_der: &[u8],
+        keypair: &KeyPair,
+        cert_not_before: i64,
+        cert_not_after: i64,
+    ) -> Result<i32, RotationError> {
+        use crate::db::schema::tls_certificates::dsl::*;
+
+        let mut conn = self.context.db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        let new_cert = NewTlsCertificate {
+            cert: cert_der.to_vec(),
+            cert_key: keypair.serialize_pem().as_bytes().to_vec(),
+            not_before: cert_not_before as i32,
+            not_after: cert_not_after as i32,
+            is_active: false,
+        };
+
+        diesel::insert_into(tls_certificates)
+            .values(&new_cert)
+            .execute(&mut conn)
+            .await?;
+
+        // Получить ID последней вставленной записи
+        let cert_id: i32 = diesel::select(diesel::dsl::sql::<diesel::sql_types::Integer>(
+            "last_insert_rowid()",
+        ))
+        .first(&mut conn)
+        .await?;
+
+        self.log_rotation_event(cert_id, "created", None).await?;
+
+        Ok(cert_id)
+    }
+
+    /// Загрузить сертификат из БД
+    async fn load_certificate(&self, cert_id: i32) -> Result<CertificateMetadata, RotationError> {
+        use crate::db::schema::tls_certificates::dsl::*;
+
+        let mut conn = self.context.db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        let cert_record: (Vec<u8>, Vec<u8>, i32, i32, i32) = tls_certificates
+            .select((cert, cert_key, not_before, not_after, created_at))
+            .filter(id.eq(cert_id))
+            .first(&mut conn)
+            .await?;
+
+        let cert_der = rustls::pki_types::CertificateDer::from(cert_record.0);
+        let key_pem = String::from_utf8(cert_record.1)
+            .map_err(|e| RotationError::InvalidState(format!("Invalid key encoding: {}", e)))?;
+        let keypair = KeyPair::from_pem(&key_pem)?;
+
+        Ok(CertificateMetadata {
+            cert_id,
+            cert: cert_der,
+            keypair: Arc::new(keypair),
+            not_before: cert_record.2 as i64,
+            not_after: cert_record.3 as i64,
+            created_at: cert_record.4 as i64,
+        })
+    }
+
+    /// Активировать сертификат (установить is_active=true)
+    async fn activate_certificate(&self, cert_id: i32) -> Result<(), RotationError> {
+        use crate::db::schema::tls_certificates::dsl::*;
+
+        let mut conn = self.context.db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        // Деактивировать все сертификаты
+        diesel::update(tls_certificates)
+            .set(is_active.eq(false))
+            .execute(&mut conn)
+            .await?;
+
+        // Активировать новый
+        diesel::update(tls_certificates.filter(id.eq(cert_id)))
+            .set(is_active.eq(true))
+            .execute(&mut conn)
+            .await?;
+
+        Ok(())
+    }
+
+    /// Получить список клиентов, которые ещё не отправили ACK
+    async fn get_missing_acks(&self, rotation_id: i32) -> Result<Vec<VerifyingKey>, RotationError> {
+        // TODO: Реализовать получение списка всех активных клиентов
+        // и вычитание тех, кто уже отправил ACK
+
+        // Пока возвращаем пустой список
+        Ok(Vec::new())
+    }
+
+    /// Очистить ACKs для данной ротации из БД
+    async fn clear_rotation_acks(&self, rotation_id: i32) -> Result<(), RotationError> {
+        use crate::db::schema::rotation_client_acks::dsl::*;
+
+        let mut conn = self.context.db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        diesel::delete(rotation_client_acks.filter(rotation_id.eq(rotation_id)))
+            .execute(&mut conn)
+            .await?;
+
+        Ok(())
+    }
+
+    /// Записать событие в audit trail
+    async fn log_rotation_event(
+        &self,
+        history_cert_id: i32,
+        history_event_type: &str,
+        history_details: Option<String>,
+    ) -> Result<(), RotationError> {
+        use crate::db::schema::tls_rotation_history::dsl::*;
+
+        let mut conn = self.context.db.get().await.map_err(|e| {
+            RotationError::InvalidState(format!("Failed to get DB connection: {}", e))
+        })?;
+
+        let new_history = NewTlsRotationHistory {
+            cert_id: history_cert_id,
+            event_type: history_event_type.to_string(),
+            details: history_details,
+        };
+
+        diesel::insert_into(tls_rotation_history)
+            .values(&new_history)
+            .execute(&mut conn)
+            .await?;
+
+        Ok(())
+    }
+}
--- a/server/crates/arbiter-server/src/context/unseal.rs
+++ b/server/crates/arbiter-server/src/context/unseal.rs
@@ -0,0 +1,161 @@
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use miette::Diagnostic;
+use secrecy::{ExposeSecret, SecretBox};
+use thiserror::Error;
+use x25519_dalek::{PublicKey, StaticSecret};
+
+const EPHEMERAL_KEY_LIFETIME_SECS: u64 = 60;
+
+#[derive(Error, Debug, Diagnostic)]
+pub enum UnsealError {
+    #[error("Invalid public key")]
+    #[diagnostic(code(arbiter_server::unseal::invalid_pubkey))]
+    InvalidPublicKey,
+}
+
+/// Ephemeral X25519 keypair for secure password transmission
+///
+/// Generated on-demand when client requests unseal. Expires after 60 seconds.
+/// Uses StaticSecret stored in SecretBox for automatic zeroization on drop.
+pub struct EphemeralKeyPair {
+    /// Secret key stored securely
+    secret: SecretBox<StaticSecret>,
+    public: PublicKey,
+    expires_at: u64,
+}
+
+impl EphemeralKeyPair {
+    /// Generate new ephemeral X25519 keypair
+    pub fn generate() -> Self {
+        // Generate random 32 bytes
+        let secret_bytes = rand::random::<[u8; 32]>();
+        let secret = StaticSecret::from(secret_bytes);
+        let public = PublicKey::from(&secret);
+
+        let now = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .expect("System time before UNIX epoch")
+            .as_secs();
+
+        Self {
+            secret: SecretBox::new(Box::new(secret)),
+            public,
+            expires_at: now + EPHEMERAL_KEY_LIFETIME_SECS,
+        }
+    }
+
+    /// Check if this ephemeral key has expired
+    pub fn is_expired(&self) -> bool {
+        let now = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .expect("System time before UNIX epoch")
+            .as_secs();
+
+        now > self.expires_at
+    }
+
+    /// Get expiration timestamp (Unix epoch seconds)
+    pub fn expires_at(&self) -> u64 {
+        self.expires_at
+    }
+
+    /// Get public key as bytes for transmission to client
+    pub fn public_bytes(&self) -> Vec<u8> {
+        self.public.as_bytes().to_vec()
+    }
+
+    /// Perform Diffie-Hellman key exchange with client's public key
+    ///
+    /// Returns 32-byte shared secret for ChaCha20Poly1305 encryption
+    pub fn perform_dh(&self, client_pubkey: &[u8]) -> Result<[u8; 32], UnsealError> {
+        // Parse client public key
+        let client_public = PublicKey::from(
+            <[u8; 32]>::try_from(client_pubkey).map_err(|_| UnsealError::InvalidPublicKey)?,
+        );
+
+        // Perform ECDH
+        let shared_secret = self.secret.expose_secret().diffie_hellman(&client_public);
+
+        Ok(shared_secret.to_bytes())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_ephemeral_keypair_generation() {
+        let keypair = EphemeralKeyPair::generate();
+
+        // Public key should be 32 bytes
+        assert_eq!(keypair.public_bytes().len(), 32);
+
+        // Should not be expired immediately
+        assert!(!keypair.is_expired());
+
+        // Expiration should be ~60 seconds in future
+        let now = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap()
+            .as_secs();
+        let time_until_expiry = keypair.expires_at() - now;
+        assert!((59..=61).contains(&time_until_expiry));
+    }
+
+    #[test]
+    fn test_perform_dh_with_valid_key() {
+        let server_keypair = EphemeralKeyPair::generate();
+        let client_secret_bytes = rand::random::<[u8; 32]>();
+        let client_secret = StaticSecret::from(client_secret_bytes);
+        let client_public = PublicKey::from(&client_secret);
+
+        // Server performs DH
+        let server_shared_secret = server_keypair
+            .perform_dh(client_public.as_bytes())
+            .expect("DH should succeed");
+
+        // Client performs DH
+        let client_shared_secret = client_secret.diffie_hellman(&server_keypair.public);
+
+        // Shared secrets should match
+        assert_eq!(server_shared_secret, client_shared_secret.to_bytes());
+        assert_eq!(server_shared_secret.len(), 32);
+    }
+
+    #[test]
+    fn test_perform_dh_with_invalid_key() {
+        let keypair = EphemeralKeyPair::generate();
+
+        // Try with invalid length
+        let invalid_key = vec![1, 2, 3];
+        let result = keypair.perform_dh(&invalid_key);
+        assert!(result.is_err());
+
+        // Try with wrong length (not 32 bytes)
+        let invalid_key = vec![0u8; 16];
+        let result = keypair.perform_dh(&invalid_key);
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_different_keypairs_produce_different_shared_secrets() {
+        let server_keypair1 = EphemeralKeyPair::generate();
+        let server_keypair2 = EphemeralKeyPair::generate();
+
+        let client_secret_bytes = rand::random::<[u8; 32]>();
+        let client_secret = StaticSecret::from(client_secret_bytes);
+        let client_public = PublicKey::from(&client_secret);
+
+        let shared1 = server_keypair1
+            .perform_dh(client_public.as_bytes())
+            .unwrap();
+        let shared2 = server_keypair2
+            .perform_dh(client_public.as_bytes())
+            .unwrap();
+
+        // Different server keys should produce different shared secrets
+        assert_ne!(shared1, shared2);
+    }
+}
--- a/server/crates/arbiter-server/src/crypto/aead.rs
+++ b/server/crates/arbiter-server/src/crypto/aead.rs
@@ -0,0 +1,139 @@
+use chacha20poly1305::{
+    aead::{Aead, KeyInit},
+    ChaCha20Poly1305, Key, Nonce,
+};
+
+use super::CryptoError;
+
+/// Encrypt plaintext with AEAD (ChaCha20Poly1305)
+///
+/// Returns (ciphertext, tag) on success
+pub fn encrypt(
+    plaintext: &[u8],
+    key: &[u8; 32],
+    nonce: &[u8; 12],
+) -> Result<Vec<u8>, CryptoError> {
+    let cipher_key = Key::from_slice(key);
+    let cipher = ChaCha20Poly1305::new(cipher_key);
+    let nonce_array = Nonce::from_slice(nonce);
+
+    cipher
+        .encrypt(nonce_array, plaintext)
+        .map_err(|e| CryptoError::AeadEncryption(e.to_string()))
+}
+
+/// Decrypt ciphertext with AEAD (ChaCha20Poly1305)
+///
+/// The ciphertext должен содержать tag (последние 16 bytes)
+pub fn decrypt(
+    ciphertext_with_tag: &[u8],
+    key: &[u8; 32],
+    nonce: &[u8; 12],
+) -> Result<Vec<u8>, CryptoError> {
+    let cipher_key = Key::from_slice(key);
+    let cipher = ChaCha20Poly1305::new(cipher_key);
+    let nonce_array = Nonce::from_slice(nonce);
+
+    cipher
+        .decrypt(nonce_array, ciphertext_with_tag)
+        .map_err(|e| CryptoError::AeadDecryption(e.to_string()))
+}
+
+/// Generate nonce from counter
+///
+/// Converts i32 counter to 12-byte nonce (big-endian encoding)
+pub fn nonce_from_counter(counter: i32) -> [u8; 12] {
+    let mut nonce = [0u8; 12];
+    nonce[8..12].copy_from_slice(&counter.to_be_bytes());
+    nonce
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_aead_encrypt_decrypt_round_trip() {
+        let plaintext = b"Hello, World! This is a secret message.";
+        let key = [42u8; 32];
+        let nonce = nonce_from_counter(1);
+
+        // Encrypt
+        let ciphertext = encrypt(plaintext, &key, &nonce).expect("Encryption failed");
+
+        // Verify ciphertext is different from plaintext
+        assert_ne!(ciphertext.as_slice(), plaintext);
+
+        // Decrypt
+        let decrypted = decrypt(&ciphertext, &key, &nonce).expect("Decryption failed");
+
+        // Verify round-trip
+        assert_eq!(decrypted.as_slice(), plaintext);
+    }
+
+    #[test]
+    fn test_aead_decrypt_with_wrong_key() {
+        let plaintext = b"Secret data";
+        let key = [1u8; 32];
+        let wrong_key = [2u8; 32];
+        let nonce = nonce_from_counter(1);
+
+        let ciphertext = encrypt(plaintext, &key, &nonce).expect("Encryption failed");
+
+        // Attempt decrypt with wrong key
+        let result = decrypt(&ciphertext, &wrong_key, &nonce);
+
+        // Should fail
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_aead_decrypt_with_wrong_nonce() {
+        let plaintext = b"Secret data";
+        let key = [1u8; 32];
+        let nonce = nonce_from_counter(1);
+        let wrong_nonce = nonce_from_counter(2);
+
+        let ciphertext = encrypt(plaintext, &key, &nonce).expect("Encryption failed");
+
+        // Attempt decrypt with wrong nonce
+        let result = decrypt(&ciphertext, &key, &wrong_nonce);
+
+        // Should fail
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_nonce_generation_from_counter() {
+        let nonce1 = nonce_from_counter(1);
+        let nonce2 = nonce_from_counter(2);
+        let nonce_max = nonce_from_counter(i32::MAX);
+
+        // Verify nonces are different
+        assert_ne!(nonce1, nonce2);
+
+        // Verify nonce format (first 8 bytes should be zero, last 4 contain counter)
+        assert_eq!(&nonce1[0..8], &[0u8; 8]);
+        assert_eq!(&nonce1[8..12], &1i32.to_be_bytes());
+
+        assert_eq!(&nonce_max[8..12], &i32::MAX.to_be_bytes());
+    }
+
+    #[test]
+    fn test_aead_tampered_ciphertext() {
+        let plaintext = b"Important message";
+        let key = [7u8; 32];
+        let nonce = nonce_from_counter(5);
+
+        let mut ciphertext = encrypt(plaintext, &key, &nonce).expect("Encryption failed");
+
+        // Tamper with ciphertext (flip a bit)
+        if let Some(byte) = ciphertext.get_mut(5) {
+            *byte ^= 0x01;
+        }
+
+        // Attempt decrypt - should fail due to authentication tag mismatch
+        let result = decrypt(&ciphertext, &key, &nonce);
+        assert!(result.is_err());
+    }
+}
--- a/server/crates/arbiter-server/src/crypto/mod.rs
+++ b/server/crates/arbiter-server/src/crypto/mod.rs
@@ -0,0 +1,28 @@
+pub mod aead;
+pub mod root_key;
+
+use miette::Diagnostic;
+use thiserror::Error;
+
+#[derive(Error, Debug, Diagnostic)]
+pub enum CryptoError {
+    #[error("AEAD encryption failed: {0}")]
+    #[diagnostic(code(arbiter_server::crypto::aead_encryption))]
+    AeadEncryption(String),
+
+    #[error("AEAD decryption failed: {0}")]
+    #[diagnostic(code(arbiter_server::crypto::aead_decryption))]
+    AeadDecryption(String),
+
+    #[error("Key derivation failed: {0}")]
+    #[diagnostic(code(arbiter_server::crypto::key_derivation))]
+    KeyDerivation(String),
+
+    #[error("Invalid nonce: {0}")]
+    #[diagnostic(code(arbiter_server::crypto::invalid_nonce))]
+    InvalidNonce(String),
+
+    #[error("Invalid key format: {0}")]
+    #[diagnostic(code(arbiter_server::crypto::invalid_key))]
+    InvalidKey(String),
+}
--- a/server/crates/arbiter-server/src/crypto/root_key.rs
+++ b/server/crates/arbiter-server/src/crypto/root_key.rs
@@ -0,0 +1,240 @@
+use argon2::{
+    password_hash::{rand_core::OsRng, PasswordHasher, SaltString},
+    Argon2, PasswordHash, PasswordVerifier,
+};
+
+use crate::db::models::AeadEncrypted;
+
+use super::{aead, CryptoError};
+
+/// Encrypt root key with user password
+///
+/// Uses Argon2id for password derivation and ChaCha20Poly1305 for encryption
+pub fn encrypt_root_key(
+    root_key: &[u8; 32],
+    password: &str,
+    nonce_counter: i32,
+) -> Result<(AeadEncrypted, String), CryptoError> {
+    // Derive key from password using Argon2
+    let (derived_key, salt) = derive_key_from_password(password)?;
+
+    // Generate nonce from counter
+    let nonce = aead::nonce_from_counter(nonce_counter);
+
+    // Encrypt root key
+    let ciphertext_with_tag = aead::encrypt(root_key, &derived_key, &nonce)?;
+
+    // Extract tag (last 16 bytes)
+    let tag_start = ciphertext_with_tag
+        .len()
+        .checked_sub(16)
+        .ok_or_else(|| CryptoError::AeadEncryption("Ciphertext too short".into()))?;
+
+    let ciphertext = ciphertext_with_tag[..tag_start].to_vec();
+    let tag = ciphertext_with_tag[tag_start..].to_vec();
+
+    let aead_encrypted = AeadEncrypted {
+        id: 1, // Will be set by database
+        current_nonce: nonce_counter,
+        ciphertext,
+        tag,
+        schema_version: 1, // Current version
+        argon2_salt: Some(salt.clone()),
+    };
+
+    Ok((aead_encrypted, salt))
+}
+
+/// Decrypt root key with user password
+///
+/// Verifies password hash and decrypts using ChaCha20Poly1305
+pub fn decrypt_root_key(
+    encrypted: &AeadEncrypted,
+    password: &str,
+    salt: &str,
+) -> Result<[u8; 32], CryptoError> {
+    // Derive key from password using stored salt
+    let derived_key = derive_key_with_salt(password, salt)?;
+
+    // Generate nonce from counter
+    let nonce = aead::nonce_from_counter(encrypted.current_nonce);
+
+    // Reconstruct ciphertext with tag
+    let mut ciphertext_with_tag = encrypted.ciphertext.clone();
+    ciphertext_with_tag.extend_from_slice(&encrypted.tag);
+
+    // Decrypt
+    let plaintext = aead::decrypt(&ciphertext_with_tag, &derived_key, &nonce)?;
+
+    // Verify length
+    if plaintext.len() != 32 {
+        return Err(CryptoError::InvalidKey(format!(
+            "Expected 32 bytes, got {}",
+            plaintext.len()
+        )));
+    }
+
+    // Convert to fixed-size array
+    let mut root_key = [0u8; 32];
+    root_key.copy_from_slice(&plaintext);
+
+    Ok(root_key)
+}
+
+/// Derive 32-byte key from password using Argon2id
+///
+/// Generates new random salt and returns (derived_key, salt_string)
+fn derive_key_from_password(password: &str) -> Result<([u8; 32], String), CryptoError> {
+    let salt = SaltString::generate(&mut OsRng);
+
+    let argon2 = Argon2::default();
+
+    let password_hash = argon2
+        .hash_password(password.as_bytes(), &salt)
+        .map_err(|e| CryptoError::KeyDerivation(e.to_string()))?;
+
+    // Extract hash output (32 bytes)
+    let hash_output = password_hash
+        .hash
+        .ok_or_else(|| CryptoError::KeyDerivation("No hash output".into()))?;
+
+    let hash_bytes = hash_output.as_bytes();
+
+    if hash_bytes.len() != 32 {
+        return Err(CryptoError::KeyDerivation(format!(
+            "Expected 32 bytes, got {}",
+            hash_bytes.len()
+        )));
+    }
+
+    let mut key = [0u8; 32];
+    key.copy_from_slice(hash_bytes);
+
+    Ok((key, salt.to_string()))
+}
+
+/// Derive 32-byte key from password using existing salt
+fn derive_key_with_salt(password: &str, salt_str: &str) -> Result<[u8; 32], CryptoError> {
+    let argon2 = Argon2::default();
+
+    // Parse salt
+    let salt =
+        SaltString::from_b64(salt_str).map_err(|e| CryptoError::InvalidKey(e.to_string()))?;
+
+    let password_hash = argon2
+        .hash_password(password.as_bytes(), &salt)
+        .map_err(|e| CryptoError::KeyDerivation(e.to_string()))?;
+
+    // Extract hash output
+    let hash_output = password_hash
+        .hash
+        .ok_or_else(|| CryptoError::KeyDerivation("No hash output".into()))?;
+
+    let hash_bytes = hash_output.as_bytes();
+
+    if hash_bytes.len() != 32 {
+        return Err(CryptoError::KeyDerivation(format!(
+            "Expected 32 bytes, got {}",
+            hash_bytes.len()
+        )));
+    }
+
+    let mut key = [0u8; 32];
+    key.copy_from_slice(hash_bytes);
+
+    Ok(key)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_root_key_encrypt_decrypt_round_trip() {
+        let root_key = [42u8; 32];
+        let password = "super_secret_password_123";
+        let nonce_counter = 1;
+
+        // Encrypt
+        let (encrypted, salt) =
+            encrypt_root_key(&root_key, password, nonce_counter).expect("Encryption failed");
+
+        // Verify structure
+        assert_eq!(encrypted.current_nonce, nonce_counter);
+        assert_eq!(encrypted.schema_version, 1);
+        assert_eq!(encrypted.tag.len(), 16); // AEAD tag size
+
+        // Decrypt
+        let decrypted =
+            decrypt_root_key(&encrypted, password, &salt).expect("Decryption failed");
+
+        // Verify round-trip
+        assert_eq!(decrypted, root_key);
+    }
+
+    #[test]
+    fn test_decrypt_with_wrong_password() {
+        let root_key = [99u8; 32];
+        let correct_password = "correct_password";
+        let wrong_password = "wrong_password";
+        let nonce_counter = 1;
+
+        // Encrypt with correct password
+        let (encrypted, salt) =
+            encrypt_root_key(&root_key, correct_password, nonce_counter).expect("Encryption failed");
+
+        // Attempt decrypt with wrong password
+        let result = decrypt_root_key(&encrypted, wrong_password, &salt);
+
+        // Should fail due to authentication tag mismatch
+        assert!(result.is_err());
+    }
+
+    #[test]
+    fn test_password_derivation_different_salts() {
+        let password = "same_password";
+
+        // Derive key twice - should produce different salts
+        let (key1, salt1) = derive_key_from_password(password).expect("Derivation 1 failed");
+        let (key2, salt2) = derive_key_from_password(password).expect("Derivation 2 failed");
+
+        // Salts should be different (randomly generated)
+        assert_ne!(salt1, salt2);
+
+        // Keys should be different (due to different salts)
+        assert_ne!(key1, key2);
+    }
+
+    #[test]
+    fn test_password_derivation_with_same_salt() {
+        let password = "test_password";
+
+        // Generate key and salt
+        let (key1, salt) = derive_key_from_password(password).expect("Derivation failed");
+
+        // Derive key again with same salt
+        let key2 = derive_key_with_salt(password, &salt).expect("Re-derivation failed");
+
+        // Keys should be identical
+        assert_eq!(key1, key2);
+    }
+
+    #[test]
+    fn test_different_nonce_produces_different_ciphertext() {
+        let root_key = [77u8; 32];
+        let password = "password123";
+
+        let (encrypted1, salt1) = encrypt_root_key(&root_key, password, 1).expect("Encryption 1 failed");
+        let (encrypted2, salt2) = encrypt_root_key(&root_key, password, 2).expect("Encryption 2 failed");
+
+        // Different nonces should produce different ciphertexts
+        assert_ne!(encrypted1.ciphertext, encrypted2.ciphertext);
+
+        // But both should decrypt correctly
+        let decrypted1 = decrypt_root_key(&encrypted1, password, &salt1).expect("Decryption 1 failed");
+        let decrypted2 = decrypt_root_key(&encrypted2, password, &salt2).expect("Decryption 2 failed");
+
+        assert_eq!(decrypted1, root_key);
+        assert_eq!(decrypted2, root_key);
+    }
+}
--- a/server/crates/arbiter-server/src/db.rs
+++ b/server/crates/arbiter-server/src/db.rs
@@ -1,11 +1,12 @@
+use std::sync::Arc;

 use diesel::{
    Connection as _, SqliteConnection,
-    connection::SimpleConnection as _,
+    connection::{SimpleConnection as _, TransactionManager},
 };
 use diesel_async::{
    AsyncConnection, SimpleAsyncConnection,
-    pooled_connection::{AsyncDieselConnectionManager, ManagerConfig},
+    pooled_connection::{AsyncDieselConnectionManager, ManagerConfig, RecyclingMethod},
    sync_connection_wrapper::SyncConnectionWrapper,
 };
 use diesel_migrations::{EmbeddedMigrations, MigrationHarness, embed_migrations};
@@ -21,7 +22,7 @@ pub type DatabasePool = diesel_async::pooled_connection::bb8::Pool<DatabaseConne
 pub type PoolInitError = diesel_async::pooled_connection::PoolError;
 pub type PoolError = diesel_async::pooled_connection::bb8::RunError;

-static DB_FILE: &'static str = "arbiter.sqlite";
+static DB_FILE: &str = "arbiter.sqlite";

 const MIGRATIONS: EmbeddedMigrations = embed_migrations!("migrations");

--- a/server/crates/arbiter-server/src/db/models.rs
+++ b/server/crates/arbiter-server/src/db/models.rs
@@ -1,58 +1,33 @@
 #![allow(unused)]
 #![allow(clippy::all)]

-use crate::db::schema::{self, aead_encrypted, arbiter_settings, root_key_history};
+use crate::db::schema::{self, aead_encrypted, arbiter_settings};
 use diesel::{prelude::*, sqlite::Sqlite};
-use restructed::Models;

 pub mod types {
    use chrono::{DateTime, Utc};
    pub struct SqliteTimestamp(DateTime<Utc>);
 }

-#[derive(Models, Queryable, Debug, Insertable, Selectable)]
-#[view(
-    NewAeadEncrypted,
-    derive(Insertable),
-    omit(id),
-    attributes_with = "deriveless"
-)]
+#[derive(Queryable, Selectable, Debug, Insertable)]
 #[diesel(table_name = aead_encrypted, check_for_backend(Sqlite))]
 pub struct AeadEncrypted {
    pub id: i32,
+    pub current_nonce: i32,
    pub ciphertext: Vec<u8>,
    pub tag: Vec<u8>,
-    pub current_nonce: Vec<u8>,
    pub schema_version: i32,
-    pub associated_root_key_id: i32, // references root_key_history.id
-    pub created_at: i32,
-}
-
-#[derive(Models, Queryable, Debug, Insertable, Selectable)]
-#[diesel(table_name = root_key_history, check_for_backend(Sqlite))]
-#[view(
-    NewRootKeyHistory,
-    derive(Insertable),
-    omit(id),
-    attributes_with = "deriveless"
-)]
-pub struct RootKeyHistory {
-    pub id: i32,
-    pub ciphertext: Vec<u8>,
-    pub tag: Vec<u8>,
-    pub root_key_encryption_nonce: Vec<u8>,
-    pub data_encryption_nonce: Vec<u8>,
-    pub schema_version: i32,
-    pub salt: Vec<u8>,
+    pub argon2_salt: Option<String>,
 }

 #[derive(Queryable, Debug, Insertable)]
 #[diesel(table_name = arbiter_settings, check_for_backend(Sqlite))]
 pub struct ArbiterSetting {
    pub id: i32,
-    pub root_key_id: Option<i32>, // references root_key_history.id
+    pub root_key_id: Option<i32>, // references aead_encrypted.id
    pub cert_key: Vec<u8>,
    pub cert: Vec<u8>,
+    pub current_cert_id: Option<i32>, // references tls_certificates.id
 }

 #[derive(Queryable, Debug)]
@@ -74,3 +49,70 @@ pub struct UseragentClient {
    pub created_at: i32,
    pub updated_at: i32,
 }
+
+// TLS Certificate Rotation Models
+
+#[derive(Queryable, Debug, Insertable)]
+#[diesel(table_name = schema::tls_certificates, check_for_backend(Sqlite))]
+pub struct TlsCertificate {
+    pub id: i32,
+    pub cert: Vec<u8>,
+    pub cert_key: Vec<u8>,
+    pub not_before: i32,
+    pub not_after: i32,
+    pub created_at: i32,
+    pub is_active: bool,
+}
+
+#[derive(Insertable)]
+#[diesel(table_name = schema::tls_certificates)]
+pub struct NewTlsCertificate {
+    pub cert: Vec<u8>,
+    pub cert_key: Vec<u8>,
+    pub not_before: i32,
+    pub not_after: i32,
+    pub is_active: bool,
+}
+
+#[derive(Queryable, Debug, Insertable)]
+#[diesel(table_name = schema::tls_rotation_state, check_for_backend(Sqlite))]
+pub struct TlsRotationState {
+    pub id: i32,
+    pub state: String,
+    pub new_cert_id: Option<i32>,
+    pub initiated_at: Option<i32>,
+    pub timeout_at: Option<i32>,
+}
+
+#[derive(Queryable, Debug, Insertable)]
+#[diesel(table_name = schema::rotation_client_acks, check_for_backend(Sqlite))]
+pub struct RotationClientAck {
+    pub rotation_id: i32,
+    pub client_key: String,
+    pub ack_received_at: i32,
+}
+
+#[derive(Insertable)]
+#[diesel(table_name = schema::rotation_client_acks)]
+pub struct NewRotationClientAck {
+    pub rotation_id: i32,
+    pub client_key: String,
+}
+
+#[derive(Queryable, Debug, Insertable)]
+#[diesel(table_name = schema::tls_rotation_history, check_for_backend(Sqlite))]
+pub struct TlsRotationHistory {
+    pub id: i32,
+    pub cert_id: i32,
+    pub event_type: String,
+    pub timestamp: i32,
+    pub details: Option<String>,
+}
+
+#[derive(Insertable)]
+#[diesel(table_name = schema::tls_rotation_history)]
+pub struct NewTlsRotationHistory {
+    pub cert_id: i32,
+    pub event_type: String,
+    pub details: Option<String>,
+}
--- a/server/crates/arbiter-server/src/db/schema.rs
+++ b/server/crates/arbiter-server/src/db/schema.rs
@@ -3,12 +3,11 @@
 diesel::table! {
    aead_encrypted (id) {
        id -> Integer,
-        current_nonce -> Binary,
+        current_nonce -> Integer,
        ciphertext -> Binary,
        tag -> Binary,
        schema_version -> Integer,
-        associated_root_key_id -> Integer,
-        created_at -> Integer,
+        argon2_salt -> Nullable<Text>,
    }
 }

@@ -18,6 +17,7 @@ diesel::table! {
        root_key_id -> Nullable<Integer>,
        cert_key -> Binary,
        cert -> Binary,
+        current_cert_id -> Nullable<Integer>,
    }
 }

@@ -31,18 +31,6 @@ diesel::table! {
    }
 }

-diesel::table! {
-    root_key_history (id) {
-        id -> Integer,
-        root_key_encryption_nonce -> Binary,
-        data_encryption_nonce -> Binary,
-        ciphertext -> Binary,
-        tag -> Binary,
-        schema_version -> Integer,
-        salt -> Binary,
-    }
-}
-
 diesel::table! {
    useragent_client (id) {
        id -> Integer,
@@ -53,13 +41,59 @@ diesel::table! {
    }
 }

-diesel::joinable!(aead_encrypted -> root_key_history (associated_root_key_id));
-diesel::joinable!(arbiter_settings -> root_key_history (root_key_id));
+diesel::table! {
+    tls_certificates (id) {
+        id -> Integer,
+        cert -> Binary,
+        cert_key -> Binary,
+        not_before -> Integer,
+        not_after -> Integer,
+        created_at -> Integer,
+        is_active -> Bool,
+    }
+}
+
+diesel::table! {
+    tls_rotation_state (id) {
+        id -> Integer,
+        state -> Text,
+        new_cert_id -> Nullable<Integer>,
+        initiated_at -> Nullable<Integer>,
+        timeout_at -> Nullable<Integer>,
+    }
+}
+
+diesel::table! {
+    rotation_client_acks (rotation_id, client_key) {
+        rotation_id -> Integer,
+        client_key -> Text,
+        ack_received_at -> Integer,
+    }
+}
+
+diesel::table! {
+    tls_rotation_history (id) {
+        id -> Integer,
+        cert_id -> Integer,
+        event_type -> Text,
+        timestamp -> Integer,
+        details -> Nullable<Text>,
+    }
+}
+
+diesel::joinable!(arbiter_settings -> aead_encrypted (root_key_id));
+diesel::joinable!(arbiter_settings -> tls_certificates (current_cert_id));
+diesel::joinable!(tls_rotation_state -> tls_certificates (new_cert_id));
+diesel::joinable!(rotation_client_acks -> tls_certificates (rotation_id));
+diesel::joinable!(tls_rotation_history -> tls_certificates (cert_id));

 diesel::allow_tables_to_appear_in_same_query!(
    aead_encrypted,
    arbiter_settings,
    program_client,
-    root_key_history,
    useragent_client,
+    tls_certificates,
+    tls_rotation_state,
+    rotation_client_acks,
+    tls_rotation_history,
 );
--- a/server/crates/arbiter-server/src/lib.rs
+++ b/server/crates/arbiter-server/src/lib.rs
@@ -1,4 +1,7 @@
-#![forbid(unsafe_code)]
+#![allow(unused)]
+
+use std::sync::Arc;
+
 use arbiter_proto::{
    proto::{ClientRequest, ClientResponse, UserAgentRequest, UserAgentResponse},
    transport::BiStream,
@@ -15,8 +18,9 @@ use crate::{
 };

 pub mod actors;
-pub mod context;
-pub mod db;
+mod context;
+mod crypto;
+mod db;
 mod errors;

 const DEFAULT_CHANNEL_SIZE: usize = 1000;
@@ -25,12 +29,6 @@ pub struct Server {
    context: ServerContext,
 }

-impl Server {
-    pub fn new(context: ServerContext) -> Self {
-        Self { context }
-    }
-}
-
 #[async_trait]
 impl arbiter_proto::proto::arbiter_service_server::ArbiterService for Server {
    type UserAgentStream = ReceiverStream<Result<UserAgentResponse, Status>>;
--- a/server/crates/arbiter-server/src/main.rs
+++ b/server/crates/arbiter-server/src/main.rs
@@ -1,34 +0,0 @@
-use arbiter_proto::proto::arbiter_service_server::ArbiterServiceServer;
-use arbiter_server::{Server, context::ServerContext, db};
-use tracing::info;
-
-#[tokio::main]
-async fn main() -> miette::Result<()> {
-    tracing_subscriber::fmt()
-        .with_env_filter(
-            tracing_subscriber::EnvFilter::try_from_default_env()
-                .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")),
-        )
-        .init();
-
-    info!("Starting arbiter server");
-
-    info!("Initializing database");
-    let db = db::create_pool(None).await?;
-    info!("Database ready");
-
-    info!("Initializing server context");
-    let context = ServerContext::new(db).await?;
-    info!("Server context ready");
-
-    let addr = "[::1]:50051".parse().expect("valid address");
-    info!(%addr, "Starting gRPC server");
-
-    tonic::transport::Server::builder()
-        .add_service(ArbiterServiceServer::new(Server::new(context)))
-        .serve(addr)
-        .await
-        .map_err(|e| miette::miette!("gRPC server error: {e}"))?;
-
-    unreachable!("gRPC server should run indefinitely");
-}
--- a/server/supply-chain/audits.toml
+++ b/server/supply-chain/audits.toml
@@ -1,11 +1,6 @@

 # cargo-vet audits file

-[[audits.similar]]
-who = "hdbg <httpdebugger@protonmail.com>"
-criteria = "safe-to-deploy"
-version = "2.2.1"
-
 [[audits.test-log]]
 who = "hdbg <httpdebugger@protonmail.com>"
 criteria = "safe-to-deploy"
@@ -16,12 +11,6 @@ who = "hdbg <httpdebugger@protonmail.com>"
 criteria = "safe-to-deploy"
 delta = "0.2.18 -> 0.2.19"

-[[trusted.cc]]
-criteria = "safe-to-deploy"
-user-id = 55123 # rust-lang-owner
-start = "2022-10-29"
-end = "2027-02-16"
-
 [[trusted.h2]]
 criteria = "safe-to-deploy"
 user-id = 359 # Sean McArthur (seanmonstar)
@@ -40,12 +29,6 @@ user-id = 359 # Sean McArthur (seanmonstar)
 start = "2022-01-15"
 end = "2027-02-14"

-[[trusted.libc]]
-criteria = "safe-to-deploy"
-user-id = 55123 # rust-lang-owner
-start = "2024-08-15"
-end = "2027-02-16"
-
 [[trusted.rustix]]
 criteria = "safe-to-deploy"
 user-id = 6825 # Dan Gohman (sunfishcode)
@@ -63,33 +46,3 @@ criteria = "safe-to-deploy"
 user-id = 3618 # David Tolnay (dtolnay)
 start = "2019-03-01"
 end = "2027-02-14"
-
-[[trusted.thread_local]]
-criteria = "safe-to-deploy"
-user-id = 2915 # Amanieu d'Antras (Amanieu)
-start = "2019-09-07"
-end = "2027-02-16"
-
-[[trusted.toml]]
-criteria = "safe-to-deploy"
-user-id = 6743 # Ed Page (epage)
-start = "2022-12-14"
-end = "2027-02-16"
-
-[[trusted.toml_parser]]
-criteria = "safe-to-deploy"
-user-id = 6743 # Ed Page (epage)
-start = "2025-07-08"
-end = "2027-02-16"
-
-[[trusted.tonic-build]]
-criteria = "safe-to-deploy"
-user-id = 10
-start = "2019-09-10"
-end = "2027-02-16"
-
-[[trusted.windows-sys]]
-criteria = "safe-to-deploy"
-user-id = 64539 # Kenny Kerr (kennykerr)
-start = "2021-11-15"
-end = "2027-02-16"
--- a/server/supply-chain/config.toml
+++ b/server/supply-chain/config.toml
@@ -13,9 +13,6 @@ url = "https://raw.githubusercontent.com/google/supply-chain/main/audits.toml"
 [imports.mozilla]
 url = "https://raw.githubusercontent.com/mozilla/supply-chain/main/audits.toml"

-[imports.zcash]
-url = "https://raw.githubusercontent.com/zcash/rust-ecosystem/main/supply-chain/audits.toml"
-
 [[exemptions.addr2line]]
 version = "0.25.1"
 criteria = "safe-to-deploy"
@@ -44,6 +41,10 @@ criteria = "safe-to-deploy"
 version = "0.1.89"
 criteria = "safe-to-deploy"

+[[exemptions.autocfg]]
+version = "1.5.0"
+criteria = "safe-to-deploy"
+
 [[exemptions.aws-lc-rs]]
 version = "1.15.4"
 criteria = "safe-to-deploy"
@@ -192,6 +193,10 @@ criteria = "safe-to-deploy"
 version = "0.2.0"
 criteria = "safe-to-deploy"

+[[exemptions.dunce]]
+version = "1.0.5"
+criteria = "safe-to-deploy"
+
 [[exemptions.dyn-clone]]
 version = "1.0.20"
 criteria = "safe-to-deploy"
@@ -204,6 +209,10 @@ criteria = "safe-to-deploy"
 version = "3.0.0-pre.6"
 criteria = "safe-to-deploy"

+[[exemptions.errno]]
+version = "0.3.14"
+criteria = "safe-to-deploy"
+
 [[exemptions.fiat-crypto]]
 version = "0.3.0"
 criteria = "safe-to-deploy"
@@ -252,6 +261,10 @@ criteria = "safe-to-deploy"
 version = "1.4.0"
 criteria = "safe-to-deploy"

+[[exemptions.http-body]]
+version = "1.0.1"
+criteria = "safe-to-deploy"
+
 [[exemptions.http-body-util]]
 version = "0.1.3"
 criteria = "safe-to-deploy"
@@ -316,6 +329,10 @@ criteria = "safe-to-deploy"
 version = "0.19.0"
 criteria = "safe-to-deploy"

+[[exemptions.libc]]
+version = "0.2.181"
+criteria = "safe-to-deploy"
+
 [[exemptions.libsqlite3-sys]]
 version = "0.35.0"
 criteria = "safe-to-deploy"
@@ -508,6 +525,10 @@ criteria = "safe-to-deploy"
 version = "0.1.27"
 criteria = "safe-to-deploy"

+[[exemptions.rustc_version]]
+version = "0.4.1"
+criteria = "safe-to-deploy"
+
 [[exemptions.rusticata-macros]]
 version = "4.1.0"
 criteria = "safe-to-deploy"
@@ -524,6 +545,10 @@ criteria = "safe-to-deploy"
 version = "0.103.9"
 criteria = "safe-to-deploy"

+[[exemptions.rustversion]]
+version = "1.0.22"
+criteria = "safe-to-deploy"
+
 [[exemptions.scoped-futures]]
 version = "0.1.4"
 criteria = "safe-to-deploy"
@@ -628,6 +653,10 @@ criteria = "safe-to-deploy"
 version = "2.0.18"
 criteria = "safe-to-deploy"

+[[exemptions.thread_local]]
+version = "1.1.9"
+criteria = "safe-to-run"
+
 [[exemptions.time]]
 version = "0.3.47"
 criteria = "safe-to-deploy"
@@ -660,6 +689,14 @@ criteria = "safe-to-deploy"
 version = "0.7.18"
 criteria = "safe-to-deploy"

+[[exemptions.toml]]
+version = "0.9.11+spec-1.1.0"
+criteria = "safe-to-deploy"
+
+[[exemptions.toml_parser]]
+version = "1.0.6+spec-1.1.0"
+criteria = "safe-to-deploy"
+
 [[exemptions.tonic]]
 version = "0.14.3"
 criteria = "safe-to-deploy"
@@ -704,6 +741,10 @@ criteria = "safe-to-deploy"
 version = "0.3.22"
 criteria = "safe-to-run"

+[[exemptions.try-lock]]
+version = "0.2.5"
+criteria = "safe-to-deploy"
+
 [[exemptions.typenum]]
 version = "1.19.0"
 criteria = "safe-to-deploy"
@@ -728,6 +769,10 @@ criteria = "safe-to-deploy"
 version = "1.20.0"
 criteria = "safe-to-deploy"

+[[exemptions.want]]
+version = "0.3.1"
+criteria = "safe-to-deploy"
+
 [[exemptions.wasi]]
 version = "0.11.1+wasi-snapshot-preview1"
 criteria = "safe-to-deploy"
@@ -772,6 +817,10 @@ criteria = "safe-to-deploy"
 version = "0.59.3"
 criteria = "safe-to-deploy"

+[[exemptions.windows-link]]
+version = "0.2.1"
+criteria = "safe-to-deploy"
+
 [[exemptions.windows-result]]
 version = "0.4.1"
 criteria = "safe-to-deploy"
@@ -780,6 +829,18 @@ criteria = "safe-to-deploy"
 version = "0.5.1"
 criteria = "safe-to-deploy"

+[[exemptions.windows-sys]]
+version = "0.52.0"
+criteria = "safe-to-deploy"
+
+[[exemptions.windows-sys]]
+version = "0.60.2"
+criteria = "safe-to-deploy"
+
+[[exemptions.windows-sys]]
+version = "0.61.2"
+criteria = "safe-to-deploy"
+
 [[exemptions.windows-targets]]
 version = "0.52.6"
 criteria = "safe-to-deploy"
@@ -864,6 +925,10 @@ criteria = "safe-to-deploy"
 version = "0.5.2"
 criteria = "safe-to-deploy"

+[[exemptions.zeroize]]
+version = "1.8.2"
+criteria = "safe-to-deploy"
+
 [[exemptions.zmij]]
 version = "1.0.20"
 criteria = "safe-to-deploy"
--- a/server/supply-chain/imports.lock
+++ b/server/supply-chain/imports.lock
@@ -41,12 +41,6 @@ user-id = 359
 user-login = "seanmonstar"
 user-name = "Sean McArthur"

-[[publisher.libc]]
-version = "0.2.182"
-when = "2026-02-13"
-user-id = 55123
-user-login = "rust-lang-owner"
-
 [[publisher.rustix]]
 version = "1.1.3"
 when = "2025-12-23"
@@ -69,33 +63,12 @@ user-login = "dtolnay"
 user-name = "David Tolnay"

 [[publisher.syn]]
-version = "2.0.115"
-when = "2026-02-12"
+version = "2.0.114"
+when = "2026-01-07"
 user-id = 3618
 user-login = "dtolnay"
 user-name = "David Tolnay"

-[[publisher.thread_local]]
-version = "1.1.9"
-when = "2025-06-12"
-user-id = 2915
-user-login = "Amanieu"
-user-name = "Amanieu d'Antras"
-
-[[publisher.toml]]
-version = "0.9.12+spec-1.1.0"
-when = "2026-02-10"
-user-id = 6743
-user-login = "epage"
-user-name = "Ed Page"
-
-[[publisher.toml_parser]]
-version = "1.0.8+spec-1.1.0"
-when = "2026-02-12"
-user-id = 6743
-user-login = "epage"
-user-name = "Ed Page"
-
 [[publisher.unicode-width]]
 version = "0.1.14"
 when = "2024-09-19"
@@ -147,34 +120,6 @@ version = "0.244.0"
 when = "2026-01-06"
 trusted-publisher = "github:bytecodealliance/wasm-tools"

-[[publisher.windows-sys]]
-version = "0.52.0"
-when = "2023-11-15"
-user-id = 64539
-user-login = "kennykerr"
-user-name = "Kenny Kerr"
-
-[[publisher.windows-sys]]
-version = "0.59.0"
-when = "2024-07-30"
-user-id = 64539
-user-login = "kennykerr"
-user-name = "Kenny Kerr"
-
-[[publisher.windows-sys]]
-version = "0.60.2"
-when = "2025-06-12"
-user-id = 64539
-user-login = "kennykerr"
-user-name = "Kenny Kerr"
-
-[[publisher.windows-sys]]
-version = "0.61.2"
-when = "2025-10-06"
-user-id = 64539
-user-login = "kennykerr"
-user-name = "Kenny Kerr"
-
 [[publisher.wit-bindgen]]
 version = "0.51.0"
 when = "2026-01-12"
@@ -320,12 +265,6 @@ criteria = "safe-to-deploy"
 version = "1.1.2"
 notes = "Contains `unsafe` code but it's well-documented and scoped to what it's intended to be doing. Otherwise a well-focused and straightforward crate."

-[[audits.bytecode-alliance.audits.cipher]]
-who = "Andrew Brown <andrew.brown@intel.com>"
-criteria = "safe-to-deploy"
-version = "0.4.4"
-notes = "Most unsafe is hidden by `inout` dependency; only remaining unsafe is raw-splitting a slice and an unreachable hint. Older versions of this regularly reach ~150k daily downloads."
-
 [[audits.bytecode-alliance.audits.core-foundation-sys]]
 who = "Dan Gohman <dev@sunfishcode.online>"
 criteria = "safe-to-deploy"
@@ -340,23 +279,6 @@ who = "Nick Fitzgerald <fitzgen@gmail.com>"
 criteria = "safe-to-deploy"
 delta = "0.2.4 -> 0.2.5"

-[[audits.bytecode-alliance.audits.errno]]
-who = "Dan Gohman <dev@sunfishcode.online>"
-criteria = "safe-to-deploy"
-version = "0.3.0"
-notes = "This crate uses libc and windows-sys APIs to get and set the raw OS error value."
-
-[[audits.bytecode-alliance.audits.errno]]
-who = "Dan Gohman <dev@sunfishcode.online>"
-criteria = "safe-to-deploy"
-delta = "0.3.0 -> 0.3.1"
-notes = "Just a dependency version bump and a bug fix for redox"
-
-[[audits.bytecode-alliance.audits.errno]]
-who = "Dan Gohman <dev@sunfishcode.online>"
-criteria = "safe-to-deploy"
-delta = "0.3.9 -> 0.3.10"
-
 [[audits.bytecode-alliance.audits.fastrand]]
 who = "Alex Crichton <alex@alexcrichton.com>"
 criteria = "safe-to-deploy"
@@ -463,28 +385,11 @@ criteria = "safe-to-deploy"
 delta = "0.4.1 -> 0.5.0"
 notes = "Minor changes for a `no_std` upgrade but otherwise everything looks as expected."

-[[audits.bytecode-alliance.audits.http-body]]
-who = "Pat Hickey <phickey@fastly.com>"
-criteria = "safe-to-deploy"
-version = "1.0.0-rc.2"
-
-[[audits.bytecode-alliance.audits.http-body]]
-who = "Alex Crichton <alex@alexcrichton.com>"
-criteria = "safe-to-deploy"
-delta = "1.0.0-rc.2 -> 1.0.0"
-notes = "Only minor changes made for a stable release."
-
 [[audits.bytecode-alliance.audits.iana-time-zone-haiku]]
 who = "Dan Gohman <dev@sunfishcode.online>"
 criteria = "safe-to-deploy"
 version = "0.1.2"

-[[audits.bytecode-alliance.audits.inout]]
-who = "Andrew Brown <andrew.brown@intel.com>"
-criteria = "safe-to-deploy"
-version = "0.1.3"
-notes = "A part of RustCrypto/utils, this crate is designed to handle unsafe buffers and carefully documents the safety concerns throughout. Older versions of this tally up to ~130k daily downloads."
-
 [[audits.bytecode-alliance.audits.leb128fmt]]
 who = "Alex Crichton <alex@alexcrichton.com>"
 criteria = "safe-to-deploy"
@@ -538,24 +443,6 @@ criteria = "safe-to-deploy"
 delta = "0.8.5 -> 0.8.9"
 notes = "No new unsafe code, just refactorings."

-[[audits.bytecode-alliance.audits.nu-ansi-term]]
-who = "Pat Hickey <phickey@fastly.com>"
-criteria = "safe-to-deploy"
-version = "0.46.0"
-notes = "one use of unsafe to call windows specific api to get console handle."
-
-[[audits.bytecode-alliance.audits.nu-ansi-term]]
-who = "Alex Crichton <alex@alexcrichton.com>"
-criteria = "safe-to-deploy"
-delta = "0.46.0 -> 0.50.1"
-notes = "Lots of stylistic/rust-related chanegs, plus new features, but nothing out of the ordrinary."
-
-[[audits.bytecode-alliance.audits.nu-ansi-term]]
-who = "Alex Crichton <alex@alexcrichton.com>"
-criteria = "safe-to-deploy"
-delta = "0.50.1 -> 0.50.3"
-notes = "CI changes, Rust changes, nothing out of the ordinary."
-
 [[audits.bytecode-alliance.audits.num-traits]]
 who = "Andrew Brown <andrew.brown@intel.com>"
 criteria = "safe-to-deploy"
@@ -650,38 +537,12 @@ criteria = "safe-to-run"
 delta = "0.2.16 -> 0.2.18"
 notes = "Standard macro changes, nothing out of place"

-[[audits.bytecode-alliance.audits.tracing-log]]
-who = "Alex Crichton <alex@alexcrichton.com>"
-criteria = "safe-to-deploy"
-version = "0.1.3"
-notes = """
-This is a standard adapter between the `log` ecosystem and the `tracing`
-ecosystem. There's one `unsafe` block in this crate and it's well-scoped.
-"""
-
-[[audits.bytecode-alliance.audits.tracing-log]]
-who = "Alex Crichton <alex@alexcrichton.com>"
-criteria = "safe-to-deploy"
-delta = "0.1.3 -> 0.2.0"
-notes = "Nothing out of the ordinary, a typical major version update and nothing awry."
-
-[[audits.bytecode-alliance.audits.try-lock]]
-who = "Pat Hickey <phickey@fastly.com>"
-criteria = "safe-to-deploy"
-version = "0.2.4"
-notes = "Implements a concurrency primitive with atomics, and is not obviously incorrect"
-
 [[audits.bytecode-alliance.audits.vcpkg]]
 who = "Pat Hickey <phickey@fastly.com>"
 criteria = "safe-to-deploy"
 version = "0.2.15"
 notes = "no build.rs, no macros, no unsafe. It reads the filesystem and makes copies of DLLs into OUT_DIR."

-[[audits.bytecode-alliance.audits.want]]
-who = "Pat Hickey <phickey@fastly.com>"
-criteria = "safe-to-deploy"
-version = "0.3.0"
-
 [[audits.bytecode-alliance.audits.wasm-metadata]]
 who = "Alex Crichton <alex@alexcrichton.com>"
 criteria = "safe-to-deploy"
@@ -730,13 +591,6 @@ criteria = "safe-to-deploy"
 delta = "0.243.0 -> 0.244.0"
 notes = "The Bytecode Alliance is the author of this crate"

-[[audits.google.audits.autocfg]]
-who = "Manish Goregaokar <manishearth@google.com>"
-criteria = "safe-to-deploy"
-version = "1.4.0"
-notes = "Contains no unsafe"
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
 [[audits.google.audits.base64]]
 who = "amarjotgill <amarjotgill@google.com>"
 criteria = "safe-to-deploy"
@@ -865,89 +719,6 @@ delta = "0.2.9 -> 0.2.13"
 notes = "Audited at https://fxrev.dev/946396"
 aggregated-from = "https://fuchsia.googlesource.com/fuchsia/+/refs/heads/main/third_party/rust_crates/supply-chain/audits.toml?format=TEXT"

-[[audits.google.audits.proc-macro-error-attr]]
-who = "George Burgess IV <gbiv@google.com>"
-criteria = "safe-to-deploy"
-version = "1.0.4"
-aggregated-from = "https://chromium.googlesource.com/chromiumos/third_party/rust_crates/+/refs/heads/main/cargo-vet/audits.toml?format=TEXT"
-
-[[audits.google.audits.rand_core]]
-who = "Lukasz Anforowicz <lukasza@chromium.org>"
-criteria = "safe-to-deploy"
-version = "0.6.4"
-notes = """
-For more detailed unsafe review notes please see https://crrev.com/c/6362797
-"""
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "Lukasz Anforowicz <lukasza@chromium.org>"
-criteria = "safe-to-deploy"
-version = "1.0.14"
-notes = """
-Grepped for `-i cipher`, `-i crypto`, `'\bfs\b'``, `'\bnet\b'``, `'\bunsafe\b'``
-and there were no hits except for:
-
-* Using trivially-safe `unsafe` in test code:
-
-    ```
-    tests/test_const.rs:unsafe fn _unsafe() {}
-    tests/test_const.rs:const _UNSAFE: () = unsafe { _unsafe() };
-    ```
-
-* Using `unsafe` in a string:
-
-    ```
-    src/constfn.rs:            "unsafe" => Qualifiers::Unsafe,
-    ```
-
-* Using `std::fs` in `build/build.rs` to write `${OUT_DIR}/version.expr`
-  which is later read back via `include!` used in `src/lib.rs`.
-
-Version `1.0.6` of this crate has been added to Chromium in
-https://source.chromium.org/chromium/chromium/src/+/28841c33c77833cc30b286f9ae24c97e7a8f4057
-"""
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "Adrian Taylor <adetaylor@chromium.org>"
-criteria = "safe-to-deploy"
-delta = "1.0.14 -> 1.0.15"
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "danakj <danakj@chromium.org>"
-criteria = "safe-to-deploy"
-delta = "1.0.15 -> 1.0.16"
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "Dustin J. Mitchell <djmitche@chromium.org>"
-criteria = "safe-to-deploy"
-delta = "1.0.16 -> 1.0.17"
-notes = "Just updates windows compat"
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "Liza Burakova <liza@chromium.org>"
-criteria = "safe-to-deploy"
-delta = "1.0.17 -> 1.0.18"
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "Dustin J. Mitchell <djmitche@chromium.org>"
-criteria = "safe-to-deploy"
-delta = "1.0.18 -> 1.0.19"
-notes = "No unsafe, just doc changes"
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.rustversion]]
-who = "Daniel Cheng <dcheng@chromium.org>"
-criteria = "safe-to-deploy"
-delta = "1.0.19 -> 1.0.20"
-notes = "Only minor updates to documentation and the mock today used for testing."
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
 [[audits.google.audits.smallvec]]
 who = "Manish Goregaokar <manishearth@google.com>"
 criteria = "safe-to-deploy"
@@ -965,28 +736,6 @@ Previously reviewed during security review and the audit is grandparented in.
 """
 aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"

-[[audits.google.audits.strum]]
-who = "danakj@chromium.org"
-criteria = "safe-to-deploy"
-version = "0.25.0"
-notes = """
-Reviewed in https://crrev.com/c/5171063
-
-Previously reviewed during security review and the audit is grandparented in.
-"""
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
-[[audits.google.audits.strum_macros]]
-who = "danakj@chromium.org"
-criteria = "safe-to-deploy"
-version = "0.25.3"
-notes = """
-Reviewed in https://crrev.com/c/5171063
-
-Previously reviewed during security review and the audit is grandparented in.
-"""
-aggregated-from = "https://chromium.googlesource.com/chromium/src/+/main/third_party/rust/chromium_crates_io/supply-chain/audits.toml?format=TEXT"
-
 [[audits.mozilla.wildcard-audits.core-foundation-sys]]
 who = "Bobby Holley <bobbyholley@gmail.com>"
 criteria = "safe-to-deploy"
@@ -1063,12 +812,6 @@ criteria = "safe-to-deploy"
 delta = "0.2.3 -> 0.2.4"
 aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"

-[[audits.mozilla.audits.errno]]
-who = "Mike Hommey <mh+mozilla@glandium.org>"
-criteria = "safe-to-deploy"
-delta = "0.3.1 -> 0.3.3"
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
 [[audits.mozilla.audits.fastrand]]
 who = "Mike Hommey <mh+mozilla@glandium.org>"
 criteria = "safe-to-deploy"
@@ -1186,16 +929,6 @@ yet, but it's all valid. Otherwise it's a pretty simple crate.
 """
 aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"

-[[audits.mozilla.audits.rustc_version]]
-who = "Nika Layzell <nika@thelayzells.com>"
-criteria = "safe-to-deploy"
-version = "0.4.0"
-notes = """
-Use of powerful capabilities is limited to invoking `rustc -vV` to get version
-information for parsing version information.
-"""
-aggregated-from = "https://raw.githubusercontent.com/mozilla/cargo-vet/main/supply-chain/audits.toml"
-
 [[audits.mozilla.audits.serde_spanned]]
 who = "Ben Dean-Kawamura <bdk@mozilla.com>"
 criteria = "safe-to-deploy"
@@ -1222,12 +955,6 @@ criteria = "safe-to-deploy"
 delta = "1.1.0 -> 1.3.0"
 aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"

-[[audits.mozilla.audits.similar]]
-who = "Nika Layzell <nika@thelayzells.com>"
-criteria = "safe-to-deploy"
-delta = "2.2.1 -> 2.7.0"
-aggregated-from = "https://raw.githubusercontent.com/mozilla/cargo-vet/main/supply-chain/audits.toml"
-
 [[audits.mozilla.audits.smallvec]]
 who = "Erich Gubler <erichdongubler@gmail.com>"
 criteria = "safe-to-deploy"
@@ -1240,30 +967,6 @@ criteria = "safe-to-deploy"
 delta = "0.10.0 -> 0.11.1"
 aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"

-[[audits.mozilla.audits.strum]]
-who = "Teodor Tanasoaia <ttanasoaia@mozilla.com>"
-criteria = "safe-to-deploy"
-delta = "0.25.0 -> 0.26.3"
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
-[[audits.mozilla.audits.strum]]
-who = "Erich Gubler <erichdongubler@gmail.com>"
-criteria = "safe-to-deploy"
-delta = "0.26.3 -> 0.27.1"
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
-[[audits.mozilla.audits.strum_macros]]
-who = "Teodor Tanasoaia <ttanasoaia@mozilla.com>"
-criteria = "safe-to-deploy"
-delta = "0.25.3 -> 0.26.4"
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
-[[audits.mozilla.audits.strum_macros]]
-who = "Erich Gubler <erichdongubler@gmail.com>"
-criteria = "safe-to-deploy"
-delta = "0.26.4 -> 0.27.1"
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
 [[audits.mozilla.audits.synstructure]]
 who = "Nika Layzell <nika@thelayzells.com>"
 criteria = "safe-to-deploy"
@@ -1335,153 +1038,3 @@ who = "Jan-Erik Rediger <jrediger@mozilla.com>"
 criteria = "safe-to-deploy"
 version = "0.1.5"
 aggregated-from = "https://raw.githubusercontent.com/mozilla/glean/main/supply-chain/audits.toml"
-
-[[audits.mozilla.audits.windows-link]]
-who = "Mark Hammond <mhammond@skippinet.com.au>"
-criteria = "safe-to-deploy"
-version = "0.1.1"
-notes = "A microsoft crate allowing unsafe calls to windows apis."
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
-[[audits.mozilla.audits.windows-link]]
-who = "Erich Gubler <erichdongubler@gmail.com>"
-criteria = "safe-to-deploy"
-delta = "0.1.1 -> 0.2.0"
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
-[[audits.mozilla.audits.zeroize]]
-who = "Benjamin Beurdouche <beurdouche@mozilla.com>"
-criteria = "safe-to-deploy"
-version = "1.8.1"
-notes = """
-This code DOES contain unsafe code required to internally call volatiles
-for deleting data. This is expected and documented behavior.
-"""
-aggregated-from = "https://hg.mozilla.org/mozilla-central/raw-file/tip/supply-chain/audits.toml"
-
-[[audits.zcash.audits.autocfg]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "1.4.0 -> 1.5.0"
-notes = "Filesystem change is to remove the generated LLVM IR output file after probing."
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.dunce]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-version = "1.0.5"
-notes = """
-Does what it says on the tin. No `unsafe`, and the only IO is `std::fs::canonicalize`.
-Path and string handling looks plausibly correct.
-"""
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.errno]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.3.3 -> 0.3.8"
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.errno]]
-who = "Daira-Emma Hopwood <daira@jacaranda.org>"
-criteria = "safe-to-deploy"
-delta = "0.3.8 -> 0.3.9"
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.errno]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.3.10 -> 0.3.11"
-notes = "The `__errno` location for vxworks and cygwin looks correct from a quick search."
-aggregated-from = "https://raw.githubusercontent.com/zcash/wallet/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.errno]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.3.11 -> 0.3.13"
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.errno]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.3.13 -> 0.3.14"
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.http-body]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "1.0.0 -> 1.0.1"
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.inout]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.1.3 -> 0.1.4"
-aggregated-from = "https://raw.githubusercontent.com/zcash/wallet/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.rustc_version]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.4.0 -> 0.4.1"
-notes = "Changes to `Command` usage are to add support for `RUSTC_WRAPPER`."
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.rustversion]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "1.0.20 -> 1.0.21"
-notes = "Build script change is to fix building with `-Zfmt-debug=none`."
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.rustversion]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "1.0.21 -> 1.0.22"
-notes = "Changes to generated code are to prepend a clippy annotation."
-aggregated-from = "https://raw.githubusercontent.com/zcash/wallet/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.strum]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.27.1 -> 0.27.2"
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.strum_macros]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.27.1 -> 0.27.2"
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.try-lock]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.2.4 -> 0.2.5"
-notes = "Bumps MSRV to remove unsafe code block."
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.want]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.3.0 -> 0.3.1"
-notes = """
-Migrates to `try-lock 0.2.4` to replace some unsafe APIs that were not marked
-`unsafe` (but that were being used safely).
-"""
-aggregated-from = "https://raw.githubusercontent.com/zcash/zcash/master/qa/supply-chain/audits.toml"
-
-[[audits.zcash.audits.windows-link]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "0.2.0 -> 0.2.1"
-notes = "No code changes at all."
-aggregated-from = "https://raw.githubusercontent.com/zcash/librustzcash/main/supply-chain/audits.toml"
-
-[[audits.zcash.audits.zeroize]]
-who = "Jack Grigg <jack@electriccoin.co>"
-criteria = "safe-to-deploy"
-delta = "1.8.1 -> 1.8.2"
-notes = """
-Changes to `unsafe` code are to alter how `core::mem::size_of` is named; no actual changes
-to the `unsafe` logic.
-"""
-aggregated-from = "https://raw.githubusercontent.com/zcash/wallet/main/supply-chain/audits.toml"
--- a/useragent/.dart_tool/extension_discovery/README.md
+++ b/useragent/.dart_tool/extension_discovery/README.md
@@ -0,0 +1,31 @@
+Extension Discovery Cache
+=========================
+
+This folder is used by `package:extension_discovery` to cache lists of
+packages that contains extensions for other packages.
+
+DO NOT USE THIS FOLDER
+----------------------
+
+ * Do not read (or rely) the contents of this folder.
+ * Do write to this folder.
+
+If you're interested in the lists of extensions stored in this folder use the
+API offered by package `extension_discovery` to get this information.
+
+If this package doesn't work for your use-case, then don't try to read the
+contents of this folder. It may change, and will not remain stable.
+
+Use package `extension_discovery`
+---------------------------------
+
+If you want to access information from this folder.
+
+Feel free to delete this folder
+-------------------------------
+
+Files in this folder act as a cache, and the cache is discarded if the files
+are older than the modification time of `.dart_tool/package_config.json`.
+
+Hence, it should never be necessary to clear this cache manually, if you find a
+need to do please file a bug.
--- a/useragent/.dart_tool/extension_discovery/vs_code.json
+++ b/useragent/.dart_tool/extension_discovery/vs_code.json
@@ -0,0 +1 @@
+{"version":2,"entries":[{"package":"arbiter","rootUri":"../","packageUri":"lib/"}]}
--- a/useragent/.dart_tool/package_config.json
+++ b/useragent/.dart_tool/package_config.json
@@ -0,0 +1,172 @@
+{
+  "configVersion": 2,
+  "packages": [
+    {
+      "name": "async",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/async-2.13.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "boolean_selector",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/boolean_selector-2.1.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.1"
+    },
+    {
+      "name": "characters",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/characters-1.4.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "clock",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/clock-1.1.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "collection",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/collection-1.19.1",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "fake_async",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/fake_async-1.3.3",
+      "packageUri": "lib/",
+      "languageVersion": "3.3"
+    },
+    {
+      "name": "flutter",
+      "rootUri": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable/packages/flutter",
+      "packageUri": "lib/",
+      "languageVersion": "3.8"
+    },
+    {
+      "name": "flutter_lints",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/flutter_lints-6.0.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.8"
+    },
+    {
+      "name": "flutter_test",
+      "rootUri": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable/packages/flutter_test",
+      "packageUri": "lib/",
+      "languageVersion": "3.8"
+    },
+    {
+      "name": "leak_tracker",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/leak_tracker-11.0.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.2"
+    },
+    {
+      "name": "leak_tracker_flutter_testing",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/leak_tracker_flutter_testing-3.0.10",
+      "packageUri": "lib/",
+      "languageVersion": "3.2"
+    },
+    {
+      "name": "leak_tracker_testing",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/leak_tracker_testing-3.0.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.2"
+    },
+    {
+      "name": "lints",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/lints-6.1.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.8"
+    },
+    {
+      "name": "matcher",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/matcher-0.12.17",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "material_color_utilities",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/material_color_utilities-0.11.1",
+      "packageUri": "lib/",
+      "languageVersion": "2.17"
+    },
+    {
+      "name": "meta",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/meta-1.17.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.5"
+    },
+    {
+      "name": "path",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/path-1.9.1",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "sky_engine",
+      "rootUri": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable/bin/cache/pkg/sky_engine",
+      "packageUri": "lib/",
+      "languageVersion": "3.8"
+    },
+    {
+      "name": "source_span",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/source_span-1.10.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.1"
+    },
+    {
+      "name": "stack_trace",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/stack_trace-1.12.1",
+      "packageUri": "lib/",
+      "languageVersion": "3.4"
+    },
+    {
+      "name": "stream_channel",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/stream_channel-2.1.4",
+      "packageUri": "lib/",
+      "languageVersion": "3.3"
+    },
+    {
+      "name": "string_scanner",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/string_scanner-1.4.1",
+      "packageUri": "lib/",
+      "languageVersion": "3.1"
+    },
+    {
+      "name": "term_glyph",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/term_glyph-1.2.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.1"
+    },
+    {
+      "name": "test_api",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/test_api-0.7.7",
+      "packageUri": "lib/",
+      "languageVersion": "3.5"
+    },
+    {
+      "name": "vector_math",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/vector_math-2.2.0",
+      "packageUri": "lib/",
+      "languageVersion": "3.1"
+    },
+    {
+      "name": "vm_service",
+      "rootUri": "file:///Users/kaska/.pub-cache/hosted/pub.dev/vm_service-15.0.2",
+      "packageUri": "lib/",
+      "languageVersion": "3.5"
+    },
+    {
+      "name": "arbiter",
+      "rootUri": "../",
+      "packageUri": "lib/",
+      "languageVersion": "3.10"
+    }
+  ],
+  "generator": "pub",
+  "generatorVersion": "3.10.8",
+  "flutterRoot": "file:///Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable",
+  "flutterVersion": "3.38.9",
+  "pubCache": "file:///Users/kaska/.pub-cache"
+}
--- a/useragent/.dart_tool/package_graph.json
+++ b/useragent/.dart_tool/package_graph.json
@@ -0,0 +1,224 @@
+{
+  "roots": [
+    "arbiter"
+  ],
+  "packages": [
+    {
+      "name": "arbiter",
+      "version": "0.1.0",
+      "dependencies": [
+        "flutter"
+      ],
+      "devDependencies": [
+        "flutter_lints",
+        "flutter_test"
+      ]
+    },
+    {
+      "name": "flutter_lints",
+      "version": "6.0.0",
+      "dependencies": [
+        "lints"
+      ]
+    },
+    {
+      "name": "flutter_test",
+      "version": "0.0.0",
+      "dependencies": [
+        "clock",
+        "collection",
+        "fake_async",
+        "flutter",
+        "leak_tracker_flutter_testing",
+        "matcher",
+        "meta",
+        "path",
+        "stack_trace",
+        "stream_channel",
+        "test_api",
+        "vector_math"
+      ]
+    },
+    {
+      "name": "flutter",
+      "version": "0.0.0",
+      "dependencies": [
+        "characters",
+        "collection",
+        "material_color_utilities",
+        "meta",
+        "sky_engine",
+        "vector_math"
+      ]
+    },
+    {
+      "name": "lints",
+      "version": "6.1.0",
+      "dependencies": []
+    },
+    {
+      "name": "stream_channel",
+      "version": "2.1.4",
+      "dependencies": [
+        "async"
+      ]
+    },
+    {
+      "name": "meta",
+      "version": "1.17.0",
+      "dependencies": []
+    },
+    {
+      "name": "collection",
+      "version": "1.19.1",
+      "dependencies": []
+    },
+    {
+      "name": "leak_tracker_flutter_testing",
+      "version": "3.0.10",
+      "dependencies": [
+        "flutter",
+        "leak_tracker",
+        "leak_tracker_testing",
+        "matcher",
+        "meta"
+      ]
+    },
+    {
+      "name": "vector_math",
+      "version": "2.2.0",
+      "dependencies": []
+    },
+    {
+      "name": "stack_trace",
+      "version": "1.12.1",
+      "dependencies": [
+        "path"
+      ]
+    },
+    {
+      "name": "clock",
+      "version": "1.1.2",
+      "dependencies": []
+    },
+    {
+      "name": "fake_async",
+      "version": "1.3.3",
+      "dependencies": [
+        "clock",
+        "collection"
+      ]
+    },
+    {
+      "name": "path",
+      "version": "1.9.1",
+      "dependencies": []
+    },
+    {
+      "name": "matcher",
+      "version": "0.12.17",
+      "dependencies": [
+        "async",
+        "meta",
+        "stack_trace",
+        "term_glyph",
+        "test_api"
+      ]
+    },
+    {
+      "name": "test_api",
+      "version": "0.7.7",
+      "dependencies": [
+        "async",
+        "boolean_selector",
+        "collection",
+        "meta",
+        "source_span",
+        "stack_trace",
+        "stream_channel",
+        "string_scanner",
+        "term_glyph"
+      ]
+    },
+    {
+      "name": "sky_engine",
+      "version": "0.0.0",
+      "dependencies": []
+    },
+    {
+      "name": "material_color_utilities",
+      "version": "0.11.1",
+      "dependencies": [
+        "collection"
+      ]
+    },
+    {
+      "name": "characters",
+      "version": "1.4.0",
+      "dependencies": []
+    },
+    {
+      "name": "async",
+      "version": "2.13.0",
+      "dependencies": [
+        "collection",
+        "meta"
+      ]
+    },
+    {
+      "name": "leak_tracker_testing",
+      "version": "3.0.2",
+      "dependencies": [
+        "leak_tracker",
+        "matcher",
+        "meta"
+      ]
+    },
+    {
+      "name": "leak_tracker",
+      "version": "11.0.2",
+      "dependencies": [
+        "clock",
+        "collection",
+        "meta",
+        "path",
+        "vm_service"
+      ]
+    },
+    {
+      "name": "term_glyph",
+      "version": "1.2.2",
+      "dependencies": []
+    },
+    {
+      "name": "string_scanner",
+      "version": "1.4.1",
+      "dependencies": [
+        "source_span"
+      ]
+    },
+    {
+      "name": "source_span",
+      "version": "1.10.2",
+      "dependencies": [
+        "collection",
+        "path",
+        "term_glyph"
+      ]
+    },
+    {
+      "name": "boolean_selector",
+      "version": "2.1.2",
+      "dependencies": [
+        "source_span",
+        "string_scanner"
+      ]
+    },
+    {
+      "name": "vm_service",
+      "version": "15.0.2",
+      "dependencies": []
+    }
+  ],
+  "configVersion": 1
+}
--- a/useragent/.dart_tool/version
+++ b/useragent/.dart_tool/version
@@ -0,0 +1 @@
+3.38.9
--- a/useragent/macos/Flutter/ephemeral/Flutter-Generated.xcconfig
+++ b/useragent/macos/Flutter/ephemeral/Flutter-Generated.xcconfig
@@ -0,0 +1,11 @@
+// This is a generated file; do not edit or check into version control.
+FLUTTER_ROOT=/Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable
+FLUTTER_APPLICATION_PATH=/Users/kaska/Documents/Projects/Major/arbiter/useragent
+COCOAPODS_PARALLEL_CODE_SIGN=true
+FLUTTER_BUILD_DIR=build
+FLUTTER_BUILD_NAME=0.1.0
+FLUTTER_BUILD_NUMBER=0.1.0
+DART_OBFUSCATION=false
+TRACK_WIDGET_CREATION=true
+TREE_SHAKE_ICONS=false
+PACKAGE_CONFIG=.dart_tool/package_config.json
--- a/useragent/macos/Flutter/ephemeral/flutter_export_environment.sh
+++ b/useragent/macos/Flutter/ephemeral/flutter_export_environment.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+# This is a generated file; do not edit or check into version control.
+export "FLUTTER_ROOT=/Users/kaska/.local/share/mise/installs/flutter/3.38.9-stable"
+export "FLUTTER_APPLICATION_PATH=/Users/kaska/Documents/Projects/Major/arbiter/useragent"
+export "COCOAPODS_PARALLEL_CODE_SIGN=true"
+export "FLUTTER_BUILD_DIR=build"
+export "FLUTTER_BUILD_NAME=0.1.0"
+export "FLUTTER_BUILD_NUMBER=0.1.0"
+export "DART_OBFUSCATION=false"
+export "TRACK_WIDGET_CREATION=true"
+export "TREE_SHAKE_ICONS=false"
+export "PACKAGE_CONFIG=.dart_tool/package_config.json"
Author	SHA1	Message	Date
CleverWild	d65e9319d9	lints(clippy)	2026-03-11 14:05:03 +01:00
CleverWild	dfc852e815	feat(server): integrate X25519 unseal handler in UserAgentActor	2026-03-11 14:05:03 +01:00
CleverWild	5b711acb15	feat(server): add X25519 ECDH for secure unseal protocol	2026-03-11 14:05:03 +01:00
CleverWild	19f19a56e5	feat(server): implement KeyStorage and state machine lifecycle	2026-03-11 14:04:46 +01:00
CleverWild	f108e64d13	feat(tls): implement TLS certificate management and rotation	2026-03-11 14:04:46 +01:00
hdbg	9f33277a4f	security(server): `cargo-vet` proper init	2026-03-11 14:03:45 +01:00
hdbg	0a8e1dce3f	housekeeping(server): trimmed-down dependencies	2026-03-11 14:03:45 +01:00
				`@@ -0,0 +1 @@`
				`{"version":2,"entries":[{"package":"arbiter","rootUri":"../","packageUri":"lib/"}]}`