"William Harazim" <[EMAIL PROTECTED]> 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

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