Article View: sci.crypt
Article #4096Re: Unix Password Security
From: Doug Gwyn
Date: Thu, 03 Mar 1988 22:08
Date: Thu, 03 Mar 1988 22:08
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In article <1149@moscom.UUCP> jgp@moscom.UUCP (Jim Prescott) writes: >Rather than have the password field be a random password or a '*' why >not have it be a real password that the user can change. Programs that >ask for your password to prove identity would still work but would use >the "low security" password. Only login and su would deal with the "high >security" password kept in the protected file. This would also make >programs that prompt for your password slightly less of a bad idea. This would encourage users to put a copy of their "high security" password (or a slight modification of it) in the "low security" file, which would compromise the security of the password. What you should have is a trusted password verifier that can be reliably used to check a user's password against the "high security" file, although with considerable delay (say, 5 seconds) imposed to make it practically useless for password-probing programs.
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!nrl-cmf!cmcl2!brl-adm!brl-smoke!gwyn From: gwyn@brl-smoke.ARPA (Doug Gwyn ) Newsgroups: sci.crypt Subject: Re: Unix Password Security Message-ID: <7411@brl-smoke.ARPA> Date: 3 Mar 88 22:08:02 GMT References: <7271@brl-smoke.ARPA> <5289@well.UUCP> <1149@moscom.UUCP> Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>) Distribution: na Organization: Ballistic Research Lab (BRL), APG, MD. Lines: 15