Artifact signing connects output to a publication process. Sigstore is an ecosystem used for that purpose.
Evaluation approach
Define expected identities and sources in verification policy. Not every validly signed file is an authorized release.
Application example
Verify a CI-produced APK before sending it to protection, then record the final output separately.
Limits and considerations
Provenance does not guarantee functional correctness or absence of vulnerabilities.
Whose valid signature is acceptable?
Specify expected repository, workflow or publisher conditions. Cryptographic validity and release authority are different questions.
Checks and decisions
- Define identity policy
- Verify signatures
- Record final output
Sources
The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.