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Re: [Anima-bootstrap] alternate to domain-certificate-identifier missing from voucher yang

Michael Richardson <mcr+ietf@sandelman.ca> Fri, 24 March 2017 23:07 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
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Date: Fri, 24 Mar 2017 19:07:29 -0400
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Subject: Re: [Anima-bootstrap] alternate to domain-certificate-identifier missing from voucher yang
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Michael Richardson <mcr+ietf@sandelman.ca> wrote:
    > Or can I?  I don't think we got the reference in trusted-ca-certificate
    > correct (and I don't have 5280 on the plane with me. Bad me, disk space
    > is cheap) to check.  I think that: An X.509 v3 certificate structure as
    > specified by RFC 5280, Section 4

Shouldn't it refer to:
          4.2.1.2.  Subject Key Identifier

We can include the literal DER encoding of the the public key, if we want
a *KEY* here.

    > is too much, I think we just wanted the subjectKeyInfo as suggested by
    > Sean Turner.


This is a hash of public key info. It was, again:
   https://tools.ietf.org/html/rfc7093

abstract:

   This document specifies additional example methods for generating Key
   Identifier values for use in the AKI (Authority Key Identifier) and
   SKI (Subject Key Identifier) certificate extensions.

I think that domain-certificate-identifier could be specifying RFC7093 DER.
We have said DER and binary, and when translated to JSON, that results in
base64 encoding, and we sign that with PKCS7, I think.

Note that if we specify hash of public key, we have to use TLS
key agreement processes that include the public key itself. That's not a big
deal, but it would be wirth making sure that we can all of this for RPK.


--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-

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