[core] Mail regarding draft-ietf-ace-key-groupcomm
Jim Schaad <ietf@augustcellars.com> Thu, 04 April 2019 01:42 UTC
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From: Jim Schaad <ietf@augustcellars.com>
To: draft-ietf-ace-key-groupcomm@ietf.org
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Date: Wed, 03 Apr 2019 18:42:31 -0700
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Subject: [core] Mail regarding draft-ietf-ace-key-groupcomm
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Some additional things that need to be thought about. 1. Someplace as part of the re-key discussions there ought to be some commentary on the wisdom of rate limiting the frequency of doing re-keying operations. 2. I think that there should be an optional parameter that says "If this much time has elapsed since the last time you checked, see if the group id has changed." This would be combined with a polling client to ensure that they check for an updated key context before doing some operation. 3. What happens in the following situations: a) The key context is changed between a request being sent and the server receiving the request. This could just be because the sender did not get the notification of the key context changing. b) The response takes "a while" to generate and the key context is changed after the request is received, but before the response is sent. c) The key context is changed in the middle of a block-wise transfer. Jim