I have one of my own design where this problem is solved by just having a "version" field in the hashed data. Bump it and the password changes, and you still h

I have one of my own design where this problem is solved by just having a "version" field in the hashed data. Bump it and the password changes, and you still have the ability to retrieve old passwords. I have been waiting for one of the good ones to incorporate this idea so I don't have to finish mine. ;) Edit: and I might as well mention my other feature that I haven't seen elsewhere, which is that the hashed data isn't used as the password directly, but rather is input to a transformation function which can take into consideration different password rules for different sites. This way if a site has a dumb rule like no exclamation points or an 8 character limit, I can still use my generator to manage the passwords, just with a lame final transform that limits the password space in the appropriate way.