diff options
Diffstat (limited to 'synapse/api')
| -rw-r--r-- | synapse/api/auth.py | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 5c83aafa7d..cf19eda4e9 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -14,7 +14,8 @@ # limitations under the License. """This module contains classes for authenticating the user.""" -from nacl.exceptions import BadSignatureError +from signedjson.key import decode_verify_key_bytes +from signedjson.sign import verify_signed_json, SignatureVerifyException from twisted.internet import defer @@ -26,7 +27,6 @@ from synapse.util import third_party_invites from unpaddedbase64 import decode_base64 import logging -import nacl.signing import pymacaroons logger = logging.getLogger(__name__) @@ -416,16 +416,23 @@ class Auth(object): key_validity_url ) return False - for _, signature_block in join_third_party_invite["signatures"].items(): + signed = join_third_party_invite["signed"] + if signed["mxid"] != event.user_id: + return False + if signed["token"] != token: + return False + for server, signature_block in signed["signatures"].items(): for key_name, encoded_signature in signature_block.items(): if not key_name.startswith("ed25519:"): return False - verify_key = nacl.signing.VerifyKey(decode_base64(public_key)) - signature = decode_base64(encoded_signature) - verify_key.verify(token, signature) + verify_key = decode_verify_key_bytes( + key_name, + decode_base64(public_key) + ) + verify_signed_json(signed, server, verify_key) return True return False - except (KeyError, BadSignatureError,): + except (KeyError, SignatureVerifyException,): return False def _get_power_level_event(self, auth_events): |