Re: Manually authenticating users in pg_shadow

Ahh, the password || username format of the stored password was the problem. Incidentally, for anyone else not having the md5() function (is that new to 7.5dev?) I was able to accomplish the same thing using

'md5' || encode( digest(password || username, 'md5'), 'hex' )

Thanks!

-----Original Message-----
From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
Sent: Tuesday, January 27, 2004 7:55 PM
To: William Harazim
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: [GENERAL] Manually authenticating users in pg_shadow

"William Harazim" <wharazim(at)fulcoinc(dot)com> writes:
> Is there a way, having a user entered username and password, to select a si=
> ngle row from pg_shadow which is using md5 password encryption?

I think what you need to know is that the stored passwd field is formed
thus:

'md5' || md5(password || username);

Substitute this for your crypt() call and you're set. Don't think you
need the separate step to extract salt (you didn't need it before
either, really).

regards, tom lane