Rated 2 out of 5 stars

I can't recommend this, and I know the Stanford PwdHash library pretty well. This is a poor implementation. One major drawback is that there's no indication of whether or not the @@/F2 key sequence worked or not (it doesn't work on every site). So you're not sure if you're sending a hashed password or not.

This review is for a previous version of the add-on (1.7.1-signed).