Direct OTP codes are ones that are delivered directly to
the user (e.g. SMS) via send_two_factor_authentication_code.
These are randomly generated, short lived, and stored
directly in the database.
TOTP (and the rotp gem) is now only enabled for those user
that have a shared secret (user.create_otp_secret).
**Why**:
When looking up a class with `Object.const_defined?`, `false` will be
returned the first time it is called, even when the class exists in the
Rails app. I think this might be due to the way Rails loads classes.
**How**:
Use `ActiveSupport::Inflector#constantize`, which returns the class all
the time when the class exists, and throws a `NameError` when it
doesn't.
The only way I was able to properly test this was to create the
`UserOtpSender` class as a real file in the test Rails app, and create
a Devise Admin user to test the scenario where `AdminOtpSender` does
not exist.
I verified that with the old code, `reset_otp_state` was not being
called when it should be, and that the new code makes the tests pass.
**Why**:
To provide an additional layer of security.
The TOTP spec (RFC 6238) recommends encrypting the keys.
http://tools.ietf.org/html/rfc6238
**How**:
Borrow the encryption code from the `attr_encrypted` gem and use it to
encrypt and decrypt the `otp_secret_key` attribute.
Allow users to add encryption by passing in `encrypted: true` to
`has_one_time_password`. This provides backwards-compatibility for
existing users of the gem.
See the README updates for more detailed instructions for both new
and existing users.
baarkerlounger
Sam Clegg
Moncef Belyamani
Ross Kaffenberger