Add logging of expirations

server/keystore.go

@@ -117,6 +117,7 @@ func (s *KeyStore) expire() {
 		s.mx.Lock()
 		for u, k := range s.userKeys {
 			if k.expiry.Before(t) {
+				log.Printf("forgetting key for %s", u)
 				wipeBytes(k.pkey)
 				delete(s.userKeys, u)
 			}

server/server.go

@@ -28,7 +28,7 @@ func (s *keyStoreServer) handleOpen(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	log.Printf("decrypted key for %s", req.Username)
+	log.Printf("decrypted key for %s, ttl=%d", req.Username, req.TTL)
 	serverutil.EncodeJSONResponse(w, &emptyResponse)
 }