On 30.1.2010, at 22.39, WJCarpenter wrote:

> I have two populations of dovecot users.  Some users have Unix accounts (with 
> logins disabled), and so their password hashes are stored in /etc/shadow.  
> These days, the default configuration for that is salted SHA-512.  It's easy 
> for me to change that scheme to something else if I want to, but the 
> important fact is that I already have some users with passwords in salted 
> SHA-512.  The other population of users is purely virtual, and their password 
> hashes are stored in a MySQL database in SHA-1 format (unsalted, but moving 
> to salted wouldn't be a big deal).  The database also has a column 
> identifying the hash scheme, so SHA-1 isn't some assumption.

By salted SHA-512 do you mean the $6$salt$sha format that glibc uses? If so, 
you can use CRYPT scheme, which causes Dovecot to use crypt() function. Then 
assuming you're using new enough glibc, it understands it.

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