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add more buffer clearing

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This commit is contained in:
Hubert Chathi 2018-10-16 15:59:32 -04:00
parent 5ef6a844d6
commit 0ec6a65858
1 changed files with 7 additions and 1 deletions
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8
python/olm/group_session.py
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@ -283,7 +283,12 @@ class InboundGroupSession(object):
message_index message_index
) )
self._check_error(ret) 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 @classmethod
def import_session(cls, session_key): def import_session(cls, session_key):
@ -313,6 +318,7 @@ class InboundGroupSession(object):
) )
obj._check_error(ret) obj._check_error(ret)
finally: finally:
# clear out copies of the key
if byte_session_key is not session_key: if byte_session_key is not session_key:
for i in range(0, len(byte_session_key)): for i in range(0, len(byte_session_key)):
byte_session_key[i] = 0 byte_session_key[i] = 0