Re: How to use md5 passwords ?

[Aaron Hall <lisps@vitaphone.net>]

On Fri, 15 Jul 2005, Markus.Grunwald@pruftechnik.com wrote:

> I thought I would use MD5 Passwords because of this line in
> /etc/pam.d/common-passwd:
>
> password   required   pam_unix.so nullok obscure min=4 max=8 md5
>
> But today I discovered that the format in /etc/shadow is crypt, because it
> is like $1$salt$hash !
>
> What did I do wrong ?

Probably nothing -- that's what md5 passwords in /etc/shadow look like.
They still use a salt and hash, it's just an md5 salt and hash. Old-style
crypt passwords don't have the '$1$' bit at the beginning.

Check out crypt(3), near the end, for more on how it works.

- Aaron

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