Re: Lost User Account Passwords

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----- Original Message ----- From: "Tim Alberts" <talberts@xxxxxxxxxxxxx>
To: <fedora-list@xxxxxxxxxx>
Sent: Wednesday, February 02, 2005 11:32 AM
Subject: Lost User Account Passwords



I'm running apache on a FC3 linux box.  I'm trying to make user password
control more available.  I know the passwd command to change user
passwords.  My question is, if a user enters a password and they forget
it, how can they get the password back out of the system without just
re-entering a new one?

Specifically, I'm using Linux-PAM with shadow passwords.  I don't want
to give users root access.  I'm really trying to create a cgi/bash
script that a user can enter their email address and it will email them
there password.  Seems like a simple thing to do, but I haven't seen a
command to retreive a current user password from Linux-PAM/shadow
passwords.  I could use a MySQL database to keep track of this stuff,
but I prefer to use the security that Linux already provides.  Plus,
then I've got plain text passwords in a database or even if I encrypted
them in the database, I have the passwords in two places and then
there's the risk of them getting out of sink (however small a risk).

They really can't get their passwords back (at least not easily). The best way to do it would be to have a script which generates a new password and mails it to them. To generate quasi-random passwords I use a command like:


ps ax | md5sum | cut -c 1-8

Thomas


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