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Diffstat (limited to 'python/olm/group_session.py')
| -rw-r--r-- | python/olm/group_session.py | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/python/olm/group_session.py b/python/olm/group_session.py index 814ce27..737d9ef 100644 --- a/python/olm/group_session.py +++ b/python/olm/group_session.py @@ -283,7 +283,12 @@ class InboundGroupSession(object): message_index ) self._check_error(ret) - return bytes_to_native_str(ffi.unpack(export_buffer, export_length)) + export_str = bytes_to_native_str(ffi.unpack(export_buffer, export_length)) + + # clear out copies of the key + lib.memset(export_buffer, 0, export_length) + + return export_str @classmethod def import_session(cls, session_key): @@ -313,6 +318,7 @@ class InboundGroupSession(object): ) obj._check_error(ret) finally: + # clear out copies of the key if byte_session_key is not session_key: for i in range(0, len(byte_session_key)): byte_session_key[i] = 0 |