Adding SSO after many users already signed up -- how to migrate them?

Product Support SSO
2

Interesting approach.

In user.rb

  def confirm_password?(password)
    return false unless password_hash && salt
    self.password_hash == hash_password(password, salt)
  end

  def hash_password(password, salt)
    raise StandardError.new("password is too long") if password.size > User.max_password_length
    Pbkdf2.hash_password(password, salt, Rails.configuration.pbkdf2_iterations, Rails.configuration.pbkdf2_algorithm)
  end

and then Pbkdf2 code is here: discourse/lib/pbkdf2.rb at 201228162c277b9833bb2988388553fdbfb39521 · discourse/discourse · GitHub