sgard

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Author	SHA1	Message	Date
Kyle Isom	edef642025	Implement JWT token auth with transparent auto-renewal. Replace per-call SSH signing with a two-layer auth system: Server: AuthInterceptor verifies JWT tokens (HMAC-SHA256 signed with repo-local jwt.key). Authenticate RPC accepts SSH-signed challenges and issues 30-day JWTs. Expired-but-valid tokens return a ReauthChallenge in error details (server-provided nonce for fast re-auth). Authenticate RPC is exempt from token requirement. Client: TokenCredentials replaces SSHCredentials as the primary PerRPCCredentials. NewWithAuth creates clients with auto-renewal — EnsureAuth obtains initial token, retryOnAuth catches Unauthenticated errors and re-authenticates transparently. Token cached at $XDG_STATE_HOME/sgard/token (0600). CLI: dialRemote() helper handles token loading, connection setup, and initial auth. Push/pull/prune commands simplified to use it. Proto: Added Authenticate RPC, AuthenticateRequest/Response, ReauthChallenge messages. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-24 00:52:16 -07:00
Kyle Isom	4b841cdd82	Step 14: SSH key auth for gRPC. Server: AuthInterceptor parses authorized_keys, extracts SSH signature from gRPC metadata (nonce + timestamp signed by client's SSH key), verifies against authorized public keys with 5-minute timestamp window. Client: SSHCredentials implements PerRPCCredentials, signs nonce+timestamp per request. LoadSigner resolves key from flag, ssh-agent, or default paths. 8 tests: valid auth, reject unauthenticated, reject unauthorized key, reject expired timestamp, metadata generation, plus 2 integration tests (authenticated succeeds, unauthenticated rejected). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-23 23:58:09 -07:00

Author

SHA1

Message

Date

Kyle Isom

edef642025

Implement JWT token auth with transparent auto-renewal.

Replace per-call SSH signing with a two-layer auth system:

Server: AuthInterceptor verifies JWT tokens (HMAC-SHA256 signed with
repo-local jwt.key). Authenticate RPC accepts SSH-signed challenges
and issues 30-day JWTs. Expired-but-valid tokens return a
ReauthChallenge in error details (server-provided nonce for fast
re-auth). Authenticate RPC is exempt from token requirement.

Client: TokenCredentials replaces SSHCredentials as the primary
PerRPCCredentials. NewWithAuth creates clients with auto-renewal —
EnsureAuth obtains initial token, retryOnAuth catches Unauthenticated
errors and re-authenticates transparently. Token cached at
$XDG_STATE_HOME/sgard/token (0600).

CLI: dialRemote() helper handles token loading, connection setup,
and initial auth. Push/pull/prune commands simplified to use it.

Proto: Added Authenticate RPC, AuthenticateRequest/Response,
ReauthChallenge messages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-24 00:52:16 -07:00

Kyle Isom

4b841cdd82

Step 14: SSH key auth for gRPC.

Server: AuthInterceptor parses authorized_keys, extracts SSH signature
from gRPC metadata (nonce + timestamp signed by client's SSH key),
verifies against authorized public keys with 5-minute timestamp window.

Client: SSHCredentials implements PerRPCCredentials, signs nonce+timestamp
per request. LoadSigner resolves key from flag, ssh-agent, or default paths.

8 tests: valid auth, reject unauthenticated, reject unauthorized key,
reject expired timestamp, metadata generation, plus 2 integration tests
(authenticated succeeds, unauthenticated rejected).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-03-23 23:58:09 -07:00

2 Commits