[Anima-bootstrap] ACE and scope of bootstrap

Michael Richardson <mcr+ietf@sandelman.ca> Wed, 25 November 2015 15:15 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
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Subject: [Anima-bootstrap] ACE and scope of bootstrap
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I wrote this to deal with any overlap with ACE.
ACE's charter specifically has the bootstrap between constrained node and
non-constrained helper (whether client or authorization server) out of scope.

+      <section title="Trust bootstrap">
+        <t>
+          The imprint protocol results in a secure relationship between the
+          domain registrar and the new device.  If the new device is
+          sufficiently constrained that the ACE protocol should be leveraged
+          for operation, (see <xref target="I-D.ietf-ace-actors" />), and
the
+          domain registrar is also the Client Authorization Server or the
+          Authorization Server, then it may be appropriate to use this
secure
+          channel to exchange ACE tokens.
+        </t>
+      </section>
     </section>

I am uncomfortable with the words "ACE tokens", but I don't know what else to
write.  I mean the thing that would represent the trust between Client <-> CAS.
I think that this may also be out-of-scope.  I don't propose to make it
in-scope for ANIMA, but to make it clear that ANIMA bootstrap will have
created a (D)TLS connection which could be reused for something else.
Or a stateless TLS session-resumption token could be exchanged for later use
by ACE.

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