Re: Postgres and TLSv1.2

On 22/05/15 02:06, Tom Lane wrote:
> Jan Bilek <jan(dot)bilek(at)eftlab(dot)co(dot)uk> writes:
>> We are trying to setup Postgres with TLSv1.2 (undergoing PA:DSS audit),
>> but getting a bit stuck there with Postgres reporting “could not accept
>> SSL connection: no shared cipherâ€. This is obviously an internal OpenSSL
>> message, but worrying part is that we've had this setup running with the
>> other encryptions and the same certificates without any problems.
>> We've been trying to follow documentation from here:
>> http://www.postgresql.org/docs/9.3/static/ssl-tcp.html.
> libpq versions before 9.4 will only accept TLSv1 exactly. In 9.4 it
> should negotiate the highest TLS version supported by both server and
> client.
>
> I don't recall why we didn't back-patch that change, probably excessive
> concern for backwards compatibility ... but anyway, AFAICS from the git
> logs, it's not in 9.3.x. I think you could get TLS 1.2 from a 9.3 server
> and 9.4 libpq, if that helps.
>
> regards, tom lane
That explains it whole. Thank you for your fast and clear answer.

Best,
Jan