Comments (3)
So from the expected use cases I think the benefit is limited, but you are strictly right that this is resource consumption save. But, if you rekey approximately once an hour, the cost of that rekeying is fairly insignificant, but we should write incorrect things. We will address the text to be factual correct, and if we want to give any recommendation we will motivate it better.
from draft-westerlund-tsvwg-dtls-over-sctp-bis.
Let's write that resumption has performance benefits for the Web but that these are not really important when setting up the parallel connections in draft-ietf-tsvwg-dtls-over-sctp-bis. The intention was not intended to imply that resumption has no advantages in general.
A more important aspect based on this comment is that I think the text in draft-ietf-tsvwg-dtls-over-sctp-bis seems to assume that resumption is only used for the parallel connections. Resuption could also be used for the initial DTLS connection. E.g., if the association is shut down for some reson and has to be restarted. Here resumption could have performance benefits for draft-ietf-tsvwg-dtls-over-sctp-bis
from draft-westerlund-tsvwg-dtls-over-sctp-bis.
I still think the old text was technically correct for parallel connections. Parallel connection are setup relatively infrequently, the nodes will have a single connection, and latency is not important when setting up a parallel connections. I have a hard time see any significant benefits. However I don't think this sentence need to be in the document at all.
I removed the sentence and replaced it with a sentence describing that "Resumption can have significant latency benefits for quickly restarting a broken DTLS/SCTP association."
from draft-westerlund-tsvwg-dtls-over-sctp-bis.
Related Issues (20)
- Define how the SCTP-AUTH keys are derived HOT 5
- Don't reuse the RFC 6803 exporter label HOT 1
- EC(DHE) -> (EC)DHE HOT 1
- Cryptographic considerations is very long HOT 1
- How do you limit new connections HOT 1
- Mandatory mutual authentication HOT 3
- Use RFC 7525(bis) HOT 3
- Authenticating fallback to RFC 6083 HOT 6
- DTLS 1.3 Only
- Editorial alignment in style of the IANA sub sections needed HOT 1
- DTLS considerations need to be clear that AEAD limits MUST be handled by new connection
- Address new vulnerabilities found in SCTP-AUTH HOT 10
- DTLS Considerations for Handling of Endpoint Pair Shared Secrets HOT 5
- Clarify that COOKIE-ECHO and COOKIE-ACK are not authenticated
- Align terminology with RFC 9260 HOT 10
- Create DTLS/SCTP Control Message IANA registry
- Update solution properties description
- Add text on how SCTP restart works
- Overstated Security Properties
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from draft-westerlund-tsvwg-dtls-over-sctp-bis.