ComSignTrust Secure Code Signing Platform (ASCS) vs Cosign
ComSignTrust Secure Code Signing Platform (ASCS)
comsigntrust.comCosign
github.comSide by side
| Figure | ComSignTrust Secure Code Signing Platform (ASCS) | Cosign |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | — |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Code Signing Software | 7.5 (#17) | 8.5 (#3) |
| Purpose | ASCS signs code files to authenticate their origin and integrity and the identity of the developing organization. | Cosign signs and verifies OCI containers and other software artifacts. |
| Support | ComSignTrust offers remote administration, configuration and installation guidance, onsite installation and organization-specific feature development. | The project directs users with issues to open a GitHub issue or ask in its Slack channel. |
Plans
ComSignTrust Secure Code Signing Platform (ASCS)
- Access Secured Code Signing (ASCS)Priced on request
In their own words
ComSignTrust Secure Code Signing Platform (ASCS)
ComSignTrust Secure Code Signing Platform (ASCS) has no write-up on Specifiction yet; its figures are above.
Cosign
Cosign is a free tool for signing and verifying OCI container images and other software artifacts. It can store container signatures in an OCI registry and publish generic artifacts through OCI. Supported targets include blobs, binaries, scripts, configuration files, SBOMs, WASM modules, Tekton bundles, eBPF modules, and in-toto attestations whose payloads use DSSE. Its default keyless workflow uses temporary keys held in memory, short-lived certificates from Sigstore’s Fulcio certificate authority, and entries in the Rekor transparency log. Other signing options include hardware and KMS-backed keys, encrypted keypairs generated by Cosign, and user-provided PKI. Cosign supports CI/CD signing, with guidance for GitHub Actions and GitLab CI/CD. Offline verification is possible when the image and signature materials are available locally and a trusted root is supplied. The project describes Cosign as a legacy signing system and recommends Sigstore-go for verification integrations. Its CLI-focused design has no API stability guarantees, and the documentation does not recommend it for application integration.