187

[RAprogramm]

Summary

Implemented enterprise-grade supply chain security features for the release workflow, including SBOM generation, Sigstore artifact signing, and build provenance attestations.

Changes

SBOM Generation

• Integrated cargo-cyclonedx for CycloneDX SBOM generation
• Automated SBOM creation for all published crates
• SBOM uploaded to GitHub releases for transparency

Artifact Signing

• Keyless signing using Sigstore/cosign with GitHub OIDC tokens
• SBOM and crate artifacts signed with tamper-proof signatures
• Signatures stored in public Rekor transparency log
• No secret management required

Build Provenance

• GitHub Actions attestations for build provenance
• SLSA provenance standards compliance
• Automated attestation generation for all artifacts

Security Artifact Management

• Upload signed artifacts to GitHub releases
• 90-day retention for audit trails
• Comprehensive security artifact tracking

Benefits

• Dependency Transparency: SBOM provides complete dependency visibility
• Supply Chain Security: Cryptographic verification of all artifacts
• Compliance: SLSA provenance for regulatory requirements
• Zero Trust: No secret keys required, OIDC-based signing
• Auditability: Public transparency log for all signatures

Test Plan

• Workflow YAML validated
• Local SBOM generation tested with cargo-cyclonedx
• All tests pass (157 passed)
• Build succeeds with no errors
• No regression in existing functionality

Next Steps

• Workflow will be tested on next release tag
• Monitor Rekor transparency log for signature verification
• Consider adding SBOM analysis tooling

Closes #187