[CentOS] Shadow passwords NOT md5'ed ?

Barry Brimer lists at brimer.org
Thu Apr 2 11:43:59 UTC 2009

> Hello,
> I have a very weird problem on a CentOS 5.2 system. A few months ago, encrypted passwords in the shadow file were MD5'ed - allowing for long passwords, rather than only 8 characters max.
> Today, passwords are 3DES'ed only. No way to find how the system reverted to DES-encrypting. But what's more bothersome is we cannot get the system to go the MD5 way again, despite all our best efforts.
> Authconfig says this :
> pam_unix is always enabled
> shadow passwords are enabled
> password hashing algorithm is md5
> So... where to look ?

Have you checked /etc/libuser.conf for crypt_style? pwck and grpck can 
verify integrity of the data in /etc/passwd /etc/group /etc/shadow 

More information about the CentOS mailing list