[20290] in Kerberos_V5_Development
Re: Add support for Access-Challenge response for OTP/RADIUS
daemon@ATHENA.MIT.EDU (Greg Hudson)
Thu Jun 10 10:58:26 2021
To: Alexander Bokovoy <abokovoy@redhat.com>
From: Greg Hudson <ghudson@mit.edu>
Message-ID: <94e04296-8cd2-83b8-286a-5594a564706c@mit.edu>
Date: Thu, 10 Jun 2021 10:58:07 -0400
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On 6/9/21 3:36 AM, Alexander Bokovoy wrote:
> - check if 'otp' string is present in the rock config
> - if it is present, check if it contains a challenge request flag
> - if challenge request flag is present, ask RADIUS server for the
> information and expect it to return Access-Challenge with the
> State attribute.
> - if Access-Challenge is missing, fail OTP processing
> - if Access-Challenge is present, set the challenge of the token
> info into the challenge value from the RADIUS packet
This sounds reasonable.
> What we also need is to preserve the state from Access-Challenge to be
> reused when client response would come back.
Have a look at the set_cookie() and get_cookie() callbacks in the
kdcpreauth interface. You can find an example of their use in
plugins/preauth/spake/spake_kdc.c.
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