Migrate old md5 passwords to bcrypt passwords

Question

I\'m reworking a website in Rails using Devise for authentication. The previous website works with a database of users with md5 passwords, and therefore I want to migrate th

Answer 1

There is no way to convert an md5 hash into another kind of hash. You will have to make users log in using the old system, and then hash the password they give using the new method. Once you have the new hash, you can delete the old, md5 hash.