Dear all, I have read the 01 version of the working group draft. I looked at the diff for the current version and the changes are only minor.
The draft provide a lot of valuable information for the IoT community. The draft describes an example implementation of secure low-power CoAP sensors that send integrity protected data to a publish-subsribe broker. The draft also discusses different alternatives available for freshness protection of messages and how the devices can be provisioned. It also discusses the design trade-offs of implementing security at the different layers. Perhaps the most important contribution is the measurements from the implementation of asymmetric cryptography on a small computing platform. While there are new elliptic curves being developed and specified, the draft provides a good record of RSA and ECDSA performance on 8-bit devices. This has already proved useful in different discussions on the SAAG and the ACE mailing lists. I support moving forward with the draft. Best regards, Shiva
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