You mean for web apps? Lotus Notes has done that since forever. The Notes password is just the seed of a decryption key for your user ID file; getting the passw

You mean for web apps? Lotus Notes has done that since forever. The Notes password is just the seed of a decryption key for your user ID file; getting the password correct decrypts the keys, both private and secret (used for shared symmetrically-encrypted document fields); the actual server login is PKI. (The Domino web password for HTML apps, when enabled, is a standard hashed-values type, though.)