Microsoft Signing Transparency: Secure Software Supply Chains
15 days ago
- #Microsoft
- #Supply Chain
- #Software Security
- Microsoft announces Signing Transparency preview to enhance software supply chain security.
- Signing Transparency uses an append-only log and secure enclaves for verifiable signature records.
- Modern software supply chains face threats like compromised build systems and stolen certificates.
- Transparency logs make every signed artifact's signature publicly auditable, deterring malicious activities.
- Signing Transparency acts as an impartial notary, ensuring software releases are not secretly modified.
- The service uses COSE envelopes and complies with IETF SCITT standards for open security.
- Countersigning and Merkle tree ledgers ensure tamper-proof records and verifiable receipts.
- Confidential computing (TEE) and CCF back the ledger, ensuring integrity and immutability.
- Benefits include tamper-evident releases, independent verification, and compliance audit trails.
- Signing Transparency extends to firmware and hardware, supporting broader supply chain integrity.
- Enterprises gain security through policy enforcement, accountability, and protection against key compromise.
- The service helps detect supply chain attacks quickly and builds trust through transparency.