RFC 4226 states the following in section 4:
R6 - The algorithm MUST use a strong shared secret. The length of
the shared secret MUST be at least 128 bits. This document
RECOMMENDs a shared secret length of 160 bits.
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
We had originally decided to provide defaults on the server side so that they
could be part of a global config for the admin. However, on further reflection,
only certain defaults really make sense given the limitations of Google
Authenticator. Similarly, other defaults may be token specific.
Attempting to handle defaults on the server side also makes both the UI and
the generated documentation unclear.
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
