Add configurable exclusion of attestation files from model signatures - #590
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Attestation files (*.sig, *.sigstore.json, claims.jsonl) are now excluded from model signatures by default to allow attestations to accumulate throughout a model's lifecycle without invalidating the original signature. This behavior can be controlled via the new --ignore-att-paths CLI flag or the ignore_att_paths parameter in the hashing API, similar to how git-related files are handled with --ignore-git-paths. Fixes sigstore#586 Assisted-by: Claude Sonnet 4.5 <noreply@anthropic.com> Signed-off-by: Ralph Bean <rbean@redhat.com>
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Can you fix the failing tests please? |
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We talked in sig meeting today - this is blocked for the moment, waiting on a proposal from Mihai on how we should handle exclusions more generally (rather than hacking on more exclusion options). |
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Adds support for excluding attestation files (signature and attestation bundle files) from model signatures by default, addressing #586.
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*.sig,*.sigstore.json,claims.jsonl) are now excluded from model signatures by default--ignore-att-paths/--no-ignore-att-pathsCLI flag to control this behaviorignore_att_pathsparameter in the hashing APIRationale
Per #586, attestation files should be signed independently to allow attestations to accumulate throughout a model's lifecycle without invalidating the original signature. This is especially important when using the
claims.jsonlpattern where attestations are appended over time.The exclusion is enabled by default but can be disabled for edge cases where users need different behavior.
Related: ossf/model-signing-spec#4