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[babel] MAC rekeying in babeld and information model

Juliusz Chroboczek <jch@irif.fr> Thu, 16 January 2020 18:45 UTC

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Date: Thu, 16 Jan 2020 19:45:36 +0100
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From: Juliusz Chroboczek <jch@irif.fr>
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Subject: [babel] MAC rekeying in babeld and information model
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Dear all,

Antonin and I have spent the afternoon looking at his work on MAC rekeying
in babeld.  His code is available in branch hmac-rekeying of

    https://github.com/MisterDA/babeld

Now... we've got an issue with the information model.

Following the information model, Antonin adds the following attribute to
keys:

   key-use sign|verify|both

I'm a little puzzled by the purpose of this attribute.  What usage
scenarios is it useful in?  In particular, it does not appear to subsume
the sign-only interface attribute, which is useful in incremental
deployment scenarios.

Thanks,

-- Juliusz

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