Mitigating supply chain attacks through hardware-enforced code signing, Sigstore integration, and automated binary attestation.
Recent high-profile supply chain compromises demonstrate that adversaries target build pipelines rather than hardened production perimeter defenses. Stolen code signing keys allow attackers to distribute trojanized updates with authentic digital signatures. Enforcing hardware key custody is now mandatory under NIST SP 800-218 and federal executive orders.
SignHSM provides high-performance PKCS#11 and KMS interfaces for modern container signing frameworks like Sigstore Cosign. Build systems can verify code provenance, SLSA Level 4 provenance metadata, and vulnerability scan assertions, anchoring signatures to hardware keys that cannot be extracted even by compromised build nodes.
Using SignHSM's configurable policy engine, organizations can enforce strict signing conditions: production binaries can only be signed if automated static analysis (SAST) passes, no critical CVEs exist, and two authorized security leads provide biometric quorum approval.