Automatic DB password hash scheme selection

[Aki Tuomi]

On 08.09.2017 06:16, Kurt Fitzner wrote:
>  
>
> Hi all, 
>
> Is there a way to get dovecot to recognize arbitrary password hash
> schemes when looking up a password in a database? I originally set up
> with #default_pass_scheme = MD5, and I would like to migrate to SHA512. 
>
> Seeing as the scheme is actually stored in the password column along
> with the password in the format $_<scheme#>_$_<salt>_$_<passwordhash>_,
> it seems to me that dovecot should be able to look at the scheme number
> and simply do the right thing. If this is possible, then migrating
> passwords over would be much easier, since people will still be able to
> log in with their old MD5-hashed password and the changer can be set up
> to hash with the new method. 
>
> Is this possible currently? 
> Thanks, 
>
>  Kurt 

Hi!

Prefix with {SCHEME}.

Aki