Re: Changing email password storage format

2012-09-07 Thread Sebastian Schinzel
On 6. Sep 2012, at 17:22 PM, Camaleón wrote: >> Anyway: >> In order to convert the hashes, I need the cleartext passwords. So one >> idea would be to tell Dovecot to spit out the cleartext password when a >> user authenticates via POP or IMAP. Do you know of any such >> functionality? > > (...) >

Re: Changing email password storage format

2012-09-06 Thread Camaleón
On Wed, 05 Sep 2012 18:02:40 +0200, Sebastian wrote: (...) > I want to upgrade the password storage from crypt to SSHA512, which > makes hashes harder to crack in case the hashes get stolen. > bcrypt/scrypt would be even better, although Dovecot does not seem to > support these natively (am I rig

Re: Changing email password storage format

2012-09-06 Thread Chris Davies
Sebastian wrote: > Assume a Debian installation running Dovecot and Postfix. > I want to upgrade the password storage from crypt to SSHA512, > which makes hashes harder to crack in case the hashes get stolen. > bcrypt/scrypt would be even better, although Dovecot does not seem > to support these

Changing email password storage format

2012-09-05 Thread Sebastian
Dear all, Assume a Debian installation running Dovecot and Postfix. So Dovecot authenticates users from the data in MySQL. Postfix authenticates users using Dovecot. Credentials are stored in a MySQL database in the crypt form (DES). Disadvantages of crypt are: - no salt - password truncation a