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Add support for native CosignatureV1 (alg 0x04) verifier keys - #216

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AlCutter merged 1 commit into
transparency-dev:mainfrom
AlCutter:support_cosig_verifier_ago
Oct 17, 2025
Merged

AlCutter merged 1 commit into
transparency-dev:mainfrom
AlCutter:support_cosig_verifier_ago

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This PR enables the creation and use of CosignatureV1 (algo 0x04) vkeys.

These vkeys are "just" algo 0x01 vkeys with a different algo ID.
While they're mechanically convertible between the two types, we're now seeing algo 0x04 vkeys turning up in the wild, so we need to be able to support these "native" cosiger vkeys too.

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codecov-commenter commented Oct 17, 2025 •

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Codecov Report

❌ Patch coverage is 42.30769% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.96%. Comparing base (fa00c16) to head (2711867).
⚠️ Report is 129 commits behind head on main.

Files with missing lines Patch % Lines
note/note_cosigv1.go 42.30% 10 Missing and 5 partials ⚠️
Additional details and impacted files
@@             Coverage Diff             @@
##             main     #216       +/-   ##
===========================================
- Coverage   82.57%   70.96%   -11.61%     
===========================================
  Files           5        6        +1     
  Lines         241      496      +255     
===========================================
+ Hits          199      352      +153     
- Misses         30      101       +71     
- Partials       12       43       +31     

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@AlCutter
AlCutter requested a review from phbnf October 17, 2025 10:44
@AlCutter
AlCutter marked this pull request as ready for review October 17, 2025 10:44
@AlCutter
AlCutter requested a review from a team as a code owner October 17, 2025 10:44
@AlCutter
AlCutter merged commit 404c0d5 into transparency-dev:main Oct 17, 2025
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@AlCutter
AlCutter deleted the support_cosig_verifier_ago branch October 17, 2025 11:00
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3 participants