nasa / nasa/CryptoLib

Does TM support shsnf_len > 0?

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Dominant language
C
Stars
169
Forks
67
PR merge metrics
No merged PRs in 30d

Description

I noticed all the TM unit tests use shsnf_len=0. When I set shsnf_len=4 (as TC does), I get MAC validation failures on unprotect.

Is TM with a transmitted sequence number field supported, or should I stick with shsnf_len=0?

Thanks!

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the TM unprotect failure with shsnf_len=4 and compare it with the existing TM unit-test cases using shsnf_len=0. Trace the MAC validation path to determine whether transmitted sequence number fields are supported; done means the behavior is verified and the relevant tests or support guidance reflect the result.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
networking, security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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