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Add public key hash check in Signed Note verification #2214

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merged 3 commits into from
Aug 27, 2024

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hojoungjang
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Summary

This PR adds a public key hash check in SignedNote.Verify method.
The hash stored in note.Signature is compared against the verifier's public key hash. If the hash mismatches, the verification fails.

Release Note

  • SignedNote.Sign is updated to use GetPublicKeyHash function.
  • GetPublicKeyHash is added to calculate sha256 hash of the input public key (copied the existing logic in SignedNote.Sign method)
  • SignedNote.Verify is updated to compare hash stored in note.Signature is and the verifier's public key hash.

Documentation

@hojoungjang hojoungjang requested a review from a team as a code owner August 21, 2024 04:50
@hojoungjang hojoungjang changed the title Hojoungjang/issue 389 Add public key hash check in Signed Note verification Aug 21, 2024
Update existing tests and ensure they work as expected and add a unit test case
to check for public key mismatch.

Signed-off-by: Jang <[email protected]>
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codecov bot commented Aug 21, 2024

Codecov Report

Attention: Patch coverage is 58.82353% with 7 lines in your changes missing coverage. Please review.

Project coverage is 51.44%. Comparing base (488eb97) to head (5261d5f).
Report is 188 commits behind head on main.

Files Patch % Lines
pkg/util/signed_note.go 58.82% 4 Missing and 3 partials ⚠️
Additional details and impacted files
@@             Coverage Diff             @@
##             main    #2214       +/-   ##
===========================================
- Coverage   66.46%   51.44%   -15.02%     
===========================================
  Files          92      189       +97     
  Lines        9258    19478    +10220     
===========================================
+ Hits         6153    10021     +3868     
- Misses       2359     8378     +6019     
- Partials      746     1079      +333     
Flag Coverage Δ
e2etests 50.24% <52.94%> (+2.68%) ⬆️
unittests 43.02% <58.82%> (-4.66%) ⬇️

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@hojoungjang
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@haydentherapper Thanks! I have addressed your comment.

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Thanks!

@hojoungjang
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Thanks for the review. I will leave this as it is for now since I don't have the permission to merge. Please let me know if there is anything I can do.

@haydentherapper haydentherapper merged commit ab3e6b4 into sigstore:main Aug 27, 2024
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@github-actions github-actions bot added this to the v1.2.2 milestone Aug 27, 2024
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Signed Note verification question
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