On Tue, Apr 11, 2017 at 08:10:23AM +0300, Heikki Linnakangas wrote:
> On 04/11/2017 04:52 AM, Peter Eisentraut wrote:
> Good question. We would need to decide the order of preference for those.
>
> That question won't arise in practice. Firstly, if the server can do
> scram-sha-256-plus, it presumably can also do scram-sha-512-plus. Unless
> there's a change in the way the channel binding works, such that the
> scram-sha-512-plus variant needs a newer version of OpenSSL or something.
> Secondly, the user's pg_authid row will contain a SCRAM-SHA-256 or
> SCRAM-SHA-512 verifier, not both, so that will dictate which one to use.
It seems openssl has had to deal with cipher preferences for years and
invented ssl_ciphers.
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