From: Ian Macdonald <ian@...>
Date: 2005-02-25T07:43:53+09:00
Subject: Re: MD5 Password creation

On Fri 25 Feb 2005 at 04:28:17 +0900, Chris Mueller wrote:

> Hi, I'm looking at creating md5 passwords in ruby then manually 
> replacing the users pass in the /etc/shadow file. I unfortunately cannot 
> use the ruby-password or ruby-termios libraries as they are not in the 
> Debian-stable tree (long story).
> 
> I looked in the source for ruby-password and noticed that if the salt 
> supplied for crypt is $1$, the returned string is an md5 digest. 
> Unfortunately this does not work
> 
> crypt_pass = password.crypt("$1$as")
> 
> the resulting does not have enough chars

Can you show me your output?

It works for me:

[ianmacd@foobar]$ irb
irb(main):001:0> require 'password'
=> true
irb(main):002:0> "foo".crypt('$1$abcdefgh')
=> "$1$abcdefgh$XxzGe9Muun7wTYbZO4sdr0"

A smaller salt works, too:

irb(main):003:0> "foo".crypt('$1$ab')
=> "$1$ab$KdoFYgkGJOZ629oOkVUuD."

Ian
-- 
Ian Macdonald               | Learn from other people's mistakes, you
System Administrator        | don't have time to make your own. 
ian@caliban.org             | 
http://www.caliban.org      | 
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