On 08/06/16 11:25, Hubert Kario wrote:
> On Tuesday 07 June 2016 19:22:00 Matt Caswell via RT wrote:
>> On Sat Apr 02 14:05:50 2016, sebast...@breakpoint.cc wrote:
>>> A TLS1.2 connetion with openssl server and gnutls-cli using a
>>> SECP384R1
>>> key ends up with SHA256 as the hash algorithm for signing the key
>>> exchange.
>>> This is because gnutls sends the hash algorithms from weak to strong
>>> and by default client's preference is used.
>>>
>>> gnutls complains about this situation:
>>> |<1>| The hash size used in signature (32) is less than the expected
>>> (48)
> 
> it complains, but does it abort connection?


FYI, there is a (long!) discussion on this issue here:
https://github.com/openssl/openssl/pull/1046

Matt



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