feat(integrtity): introduce zero cost wrapper Verified

server/crates/arbiter-server/src/grpc/client/auth.rs

@@ -22,8 +22,9 @@ use tonic::Status;
 use tracing::warn;
 
 use crate::{
+    crypto::integrity::{Nested, Verified},
     grpc::request_tracker::RequestTracker,
-    peers::client::{self, ClientConnection, auth},
+    peers::client::{self, ClientConnection, ClientCredentials, auth},
 };
 
 pub struct AuthTransportAdapter<'a> {
@@ -197,7 +198,7 @@ pub async fn start(
     conn: &mut ClientConnection,
     bi: &mut GrpcBi<ClientRequest, ClientResponse>,
     request_tracker: &mut RequestTracker,
-) -> Result<i32, auth::Error> {
+) -> Result<Verified<i32, Nested<ClientCredentials>>, auth::Error> {
     let mut transport = AuthTransportAdapter::new(bi, request_tracker);
     client::auth::authenticate(conn, &mut transport).await
 }