Add OCI 1.1 referrers API support for attestation discovery#1894
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Codecov Report❌ Patch coverage is
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## main #1894 +/- ##
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- Coverage 42.78% 29.98% -12.80%
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Files 121 122 +1
Lines 8994 7323 -1671
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- Hits 3848 2196 -1652
- Misses 4791 4894 +103
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@falcorocks There are some lint issues here. Could you fix those ? |
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@hectorj2f I still want to do this, just hard to find the time lately. Please bear with me |
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@falcorocks You need to fix the DCO check. |
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Implements OCI 1.1 referrers API for discovering attestations with automatic fallback to legacy tag-based discovery. This enables policy-controller to work with modern OCI 1.1 registries while maintaining backward compatibility. - Add 'enable-oci11' configuration option (disabled by default) - Implement OCI 1.1 referrers API discovery with fallback - Add CLI flag '--enable-oci11' to policy-tester for testing Signed-off-by: falcorocks <[email protected]>
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@hectorj2f that bring your own keys failure is unrelated to the change... |
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Closes #1895
Summary
Some provenance attestation implementation, for instance Google Cloud Build, store attestations using the OCI 1.1 referrers API rather than the traditional
<subject digest>.attnaming scheme. As is, the policy controller is thus unable to verify valid in-toto provenance attestations generated by Google Cloud Build. This is demonstrated in #1895.This PR Implements OCI 1.1 referrers API for discovering attestations with automatic fallback to legacy tag-based discovery. This enables policy-controller to work with modern OCI 1.1 registries while maintaining backward compatibility, regardless if the new sigstore bundle format is used or not.
Technical implementation:
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