Re: Maximum password length

From: Stephen Frost <sfrost(at)snowman(dot)net>
To: "Bossart, Nathan" <bossartn(at)amazon(dot)com>
Cc: Isaac Morland <isaac(dot)morland(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Maximum password length
Date: 2018-10-12 21:23:38
Message-ID: 20181012212338.GW4184@tamriel.snowman.net
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Greetings,

* Bossart, Nathan (bossartn(at)amazon(dot)com) wrote:
> On 10/12/18, 4:04 PM, "Isaac Morland" <isaac(dot)morland(at)gmail(dot)com> wrote:
> > I agree there should be a specific limit that is the same in libpq,
> > on the server, and in the protocol. Maybe 128 characters, to get a
> > nice round number? This is still way longer than the 32-byte SHA 256
> > hash. Or 64, which is still plenty but doesn't involve extending the
> > current character buffer size to a longer value while still hugely
> > exceeding the amount of information in the hash.
>
> My main motivation for suggesting the increase to 8k is to provide
> flexibility for alternative authentication methods like LDAP, RADIUS,
> PAM, and BSD.

Specific use-cases here would be better than hand-waving at "these other
things." Last I checked, all of those work with what we've got today
and I don't recall hearing complaints about them not working due to this
limit.

Thanks!

Stephen

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