[issue12551] Provide data for TLS channel binding
Antoine Pitrou
report at bugs.python.org
Wed Jul 13 13:52:09 CEST 2011
Antoine Pitrou <pitrou at free.fr> added the comment:
Interestingly (from rfc5929):
This definition of 'tls-unique' means that a channel's bindings
data may change over time, which in turn creates a synchronization
problem should the channel's bindings data change between the time
that the client initiates authentication with channel binding and
the time that the server begins to process the client's first
authentication message. If that happens, the authentication
attempt will fail spuriously.
> and is (they say), available via OpenSSL API
Do you happen to know which API? I see no reference to tls-unique or channel binding, in either the OpenSSL website or the latest OpenSSL snapshot.
According to some mailing-list message, we could use SSL_get_finished() and SSL_get_peer_finished(), but that still leaves us to figure out what to do with the info returned by these functions. It would be nice if there was some ready-to-use code (I'm not a crypto expert).
----------
nosy: +pitrou
stage: -> needs patch
versions: -Python 2.7, Python 3.2, Python 3.4
_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12551>
_______________________________________
More information about the Python-bugs-list
mailing list