[CentOS] Shadow passwords NOT md5'ed ?

Frédérique Da Luene frederique_daluene at yahoo.fr
Thu Apr 2 07:57:13 UTC 2009

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 ?
-- FdL


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