---
name: "cosign"
section: "1"
platform: "linux"
package: "cosign"
version: "2.5.0-2+b4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cosign"
---

# cosign(1)

Container Signing/Verification/Storage tool

## NAME

cosign - Container Signing/Verification/Storage tool

## DESCRIPTION

A tool for Container Signing, Verification and Storage in an OCI registry.

Usage: cosign \[command\]

Available Commands: attach                  Provides utilities for attaching artifacts to other artifacts in a registry attest                  Attest the supplied container image. attest-blob             Attest the supplied blob. bundle                  Interact with a Sigstore protobuf bundle clean                   Remove all signatures from an image. completion              Generate completion script copy                    Copy the supplied container image and signatures. dockerfile              Provides utilities for discovering images in and performing operations on Dockerfiles download                Provides utilities for downloading artifacts and attached artifacts in a registry env                     Prints Cosign environment variables generate                Generates (unsigned) signature payloads from the supplied container image. generate-key-pair       Generates a key-pair. help                    Help about any command import-key-pair         Imports a PEM-encoded RSA or EC private key. initialize              Initializes SigStore root to retrieve trusted certificate and key targets for verification. load                    Load a signed image on disk to a remote registry login                   Log in to a registry manifest                Provides utilities for discovering images in and performing operations on Kubernetes manifests public-key              Gets a public key from the key-pair. save                    Save the container image and associated signatures to disk at the specified directory. sign                    Sign the supplied container image. sign-blob               Sign the supplied blob, outputting the base64-encoded signature to stdout. tree                    Display supply chain security related artifacts for an image such as signatures, SBOMs and attestations triangulate             Outputs the located cosign image reference. This is the location where cosign stores the specified artifact type. trusted-root            Interact with a Sigstore protobuf trusted root upload                  Provides utilities for uploading artifacts to a registry verify                  Verify a signature on the supplied container image verify-attestation      Verify an attestation on the supplied container image verify-blob             Verify a signature on the supplied blob verify-blob-attestation Verify an attestation on the supplied blob version                 Prints the version

### Flags:

**-h**, **--help**=*false*:

-

  help for cosign

**--output-file=**'':

-

  log output to a file

**-t**, **--timeout**=*3m0s*:

-

  timeout for commands

**-d**, **--verbose**=*false*:

-

  log debug output

Additional help topics: cosign piv-tool                This cosign was not built with piv-tool support! cosign pkcs11-tool             This cosign was not built with pkcs11-tool support!

Use "cosign \[command\] **--help**" for more information about a command.