Re: [babel] HMAC Key rotation key format (was ripemd)

Toke Høiland-Jørgensen <> Mon, 26 November 2018 21:11 UTC

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To: Dave Taht <>
Cc: Juliusz Chroboczek <>, babel-users <>, Babel at IETF <>
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Date: Mon, 26 Nov 2018 22:10:56 +0100
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Subject: Re: [babel] HMAC Key rotation key format (was ripemd)
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Dave Taht <> writes:

> To me this leaves the biggest problem remaining is key rotation. Me
> being me, and remembering just how hard it was to get dnssec working
> on systems lacking reliable time,

The Babel HMAC extension as currently specified does not rely on wall
clock time in any way, so not really sure how a comparison to dnssec is

> Setting that aside for the moment, having a standardized file format
> for babel keys would be a boon and boost interoperability between
> bird/babel and other possible implementations.

>From the point of view of each routing daemon this would just make Babel
a special snowflake.

What we can do is to specify the format in the information model if a
cross-implementation format is really needed (which I'm not really
convinced of, either)...