Date: Sun, 24 Jun 2007 00:53:51 +0400 From: gremlin@...mlin.ru To: owl-users@...ts.openwall.com Subject: Re: pam_passwdqc and history On Sat, Jun 23, 2007 at 11:01:04AM -0600, Vincent Danen wrote: > Quick question. Does pam_passwdqc support password history? > Not just comparing the current password to the new password, > but seeing if it's similar to, say, any of the last 3 > passwords a user used? Apparently some government/company > legislation/policies require history checking of current-N > passwords, and I'm wondering if passwdqc does this. It does NOT and, I hope, never will - all these "password history policies" require storing plaintext password somewhere, which is absolutely inacceptable. The only possible check is whether new password is the same as current - it is the only which can be verified using the current password hash (in that case user can switch between two passwords, but it is really safer to remember them than writing every new password down somewhere). -- Alexey V. Vissarionov aka Gremlin from Kremlin <gremlin ПРИ gremlin ТЧК ru> -- To unsubscribe, e-mail owl-users-unsubscribe@...ts.openwall.com and reply to the automated confirmation request that will be sent to you.
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