crypt function mode

[Martin]

On Fri, 2009-04-17 at 12:00 -0400, pam-list-request at redhat.com wrote:

> -------- Forwarded Message --------
> From: Sudarshan Soma <sudarshan12s at gmail.com>
> Reply-To: Pluggable Authentication Modules <pam-list at redhat.com>
> To: Pluggable Authentication Modules <pam-list at redhat.com>
> Subject: crypt function mode
> Date: Fri, 17 Apr 2009 20:36:07 +0530
> 
> Hi All,
> Can anyone please let me know what block ciphers mode( Electronic
> Codebook Mode (ECB) , Cipher Blockchaining Mode (CBC),..)
>  does the crypt function used in pam_unix use.
It doesn't.  These are for symmetric encryption, the crypt function uses
them as a one way hash (that why the later versions use MD5).

> Please suggest me any pointers , if this is more of the crypt function
> question.
You might try reading the code; it's about as good a description as any.

Cheers,
 - Martin