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eriptic / uoscore-uedhoc

C implementations for constrained (and non-constrained) devices of the IETF protocols OSCORE and EDHOC
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fix: added necessary NVM write after reboot #32

Closed mopsiok closed 1 year ago

mopsiok commented 1 year ago

Additional NVM write has to be added for proper operation described in https://datatracker.ietf.org/doc/html/rfc8613#section-7.5:

If an endpoint makes use of a partial security
context stored in nonvolatile memory, it MUST NOT reuse a
previous Sender Sequence Number and MUST NOT accept previously
received messages.

This requirement is not met now if the device reboots before first NVM write (once per x SSN increments).