diff options
Diffstat (limited to 'synapse/crypto/event_signing.py')
| -rw-r--r-- | synapse/crypto/event_signing.py | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/synapse/crypto/event_signing.py b/synapse/crypto/event_signing.py index 07e383e221..cb2db01c04 100644 --- a/synapse/crypto/event_signing.py +++ b/synapse/crypto/event_signing.py @@ -94,3 +94,23 @@ def verify_signed_event_pdu(pdu, signature_name, verify_key): tmp_pdu = prune_pdu(tmp_pdu) pdu_json = tmp_pdu.get_dict() verify_signed_json(pdu_json, signature_name, verify_key) + + +def add_hashes_and_signatures(event, signature_name, signing_key, + hash_algorithm=hashlib.sha256): + tmp_event = copy.deepcopy(event) + tmp_event = prune_event(tmp_event) + redact_json = tmp_event.get_dict() + redact_json.pop("signatures", None) + redact_json = sign_json(redact_json, signature_name, signing_key) + event.signatures = redact_json["signatures"] + + event_json = event.get_full_dict() + #TODO: We need to sign the JSON that is going out via fedaration. + event_json.pop("age_ts", None) + event_json.pop("unsigned", None) + event_json.pop("signatures", None) + event_json.pop("hashes", None) + event_json_bytes = encode_canonical_json(event_json) + hashed = hash_algorithm(event_json_bytes) + event.hashes[hashed.name] = encode_base64(hashed.digest()) |