feat: implement scoped join attempts and tickets (#10)

Closes #10
2026-07-16 06:56:30 +02:00
parent 06c3973ce7
commit 1baa1055dc
30 changed files with 2057 additions and 113 deletions
@@ -20,6 +20,7 @@ internal interface ISessionCapabilityService
        string idempotencyKey,
        string requestFingerprint,
        string derivationSalt);
+    string DeriveOpaqueIdentifier(string purpose, string value);
    bool TryFingerprint(string? capability, out SecretFingerprint fingerprint);
 }

@@ -91,6 +92,19 @@ internal sealed class EphemeralCapabilityIssuer : ISessionCapabilityService, IDi
        }
    }

+    public string DeriveOpaqueIdentifier(string purpose, string value)
+    {
+        byte[] digest = Derive(purpose, value);
+        try
+        {
+            return Encode(digest);
+        }
+        finally
+        {
+            CryptographicOperations.ZeroMemory(digest);
+        }
+    }
+
    public bool TryFingerprint(string? capability, out SecretFingerprint fingerprint)
    {
        fingerprint = default;