Linda Dunbar <[email protected]> wrote:
    >> Could you share your recommendation on the best path forward? Should we
    >> consider AD sponsorship, pursue adoption in IPsecme, or take another
    >> route?

    > 1. Running Code.
    Linda> HMAC is already widely deployed in IPsec and other protocols;  our
    Linda> approach simply applies the same existing HMAC functionality more
    Linda> selectively, so it is a subset of what current implementations
    Linda> already support.

If IPsec was as simple as asserting that des.c exists on a system, then I
might agree.   But, it's not like that.  Key management is non-trivial.

    > 2. As for rough consensus: Depends upon who is going to implement.
    > It seems that you need Azure, Google, AWS to implement in order to deploy.

    Linda> The mechanism is not tied to any specific cloud provider; it
    Linda> relies on standard HMAC functions already supported in existing
    Linda> implementations, so deployment is not dependent on Azure, Google,
    Linda> or AWS.

So, I can just start using it, and the various cloud providers will
automatically be able to validate this "standard HMAC functions"?
Do you even need an RFC in that case?

    Linda> The overall HMAC approach is described in
    Linda> https://datatracker.ietf.org/doc/draft-ietf-rtgwg-multisegment-sdwan/
    Linda> , co-authored by Google and Oracle Cloud, while the current draft
    Linda> focuses on the key management details that require review and
    Linda> endorsement from IPsec WG experts. For this reason, we are seeking
    Linda> either Security AD sponsorship or adoption in the IPsecme WG.

I looked through that document, and it seems that it's all there, including
the statement that I recalled:
   This mechanism is scoped to communication between SD-WAN CPEs
   and Cloud GWs, with the shared key provisioned through a
   secure channel.

and since this secure channel isn't IKEv2, and this isn't IPsec ESP (its a
new TLV for GENEVE), this WG really can't help you.

--
Michael Richardson <[email protected]>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide

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