Subject: Re: PROPOSAL: adding capability for blowfish passwords
To: None <>
From: Steven M. Bellovin <>
List: current-users
Date: 05/24/2002 08:28:05
In message <>, writes
>on Thu, May 23, 2002 at 11:22:51PM -0400, Steven M. Bellovin wrote:
>> One other point I should mention:  the code fragment I sketched had an 
>> optional site-specific field.  Today's algorithm encrypts a constant 
>> block, which makes hashed passwords portable.  That isn't necessarily 
>> an advantage, since it lets an attacker combine password files from 
>> multiple sites for a single cracking run.  The variant allows site 
>> administrators to change that.
>> Where to store this string is an open issue.
>Is there any harm in storing it in /etc/passwd.conf?
>    localcipher = sha512[,rounds[,site-salt]]
It's the obvious file, though the syntax may take a bit of work.

		--Steve Bellovin, (me) ("Firewalls" book)