Provide a master password, and a sitekey for each site (e.g. "google", "facebook", etc.), we use HMAC-MD5 algorithm to calculate a unique, cryptographically strong password for you to use on that site. You don't need to "store" or "remember" the generated password anywhere. Just regenerate it and it will be the same. Compatible with Chrome extension 123 Password: https://chrome.google.com/webstore/detail/pahmlghhaoabdlhnkmmjbkcmdamjccjj