I wrote a bit about this awhile back here (http://software-and-algorithms.blogspot.com/2012/06/password-management.html http://software-and-algorithms.blogspot.

I wrote a bit about this awhile back here (http://software-and-algorithms.blogspot.com/2012/06/password-management.html http://software-and-algorithms.blogspot.com/2012/06/password...). Basically, I use HMAC to generate passwords based upon a single strong password and an account-specific phrase.