Re: SCRAM with channel binding downgrade attack

From: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Michael Paquier <michael(at)paquier(dot)xyz>,Bruce Momjian <bruce(at)momjian(dot)us>,Magnus Hagander <magnus(at)hagander(dot)net>,PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>,Stephen Frost <sfrost(at)snowman(dot)net>
Subject: Re: SCRAM with channel binding downgrade attack
Date: 2018-05-25 15:24:07
Message-ID: D3D808E3-32BC-441C-9E0A-6DCDA508148B@iki.fi
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On 25 May 2018 17:44:16 EEST, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>On Wed, May 23, 2018 at 2:46 AM, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
>wrote:
>> We could provide "tls-unique" and "tls-server-end-point" in addition
>to
>> those, but I'd consider those to be developer only settings, useful
>only for
>> testing the protocol.
>
>It seems to me that this is really another sort of thing altogether.
>Whether or not you want to insist on channel binding is a completely
>separate thing from which channel binding methods you're willing to
>use. It seems to me like the most logical thing would be to make
>these two separate connection options.

Works for me.

- Heikki

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