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clients

sigstore-go 1.0 is now available

May 12, 2025 · Cody Soyland (GitHub)

We love Go within the Sigstore community, and it’s been our language of choice since we got started. Cosign, Rekor, Fulcio, Policy Controller, and Timestamp Authority are all written in Go, and we’re lucky to have such a vibrant community of Go developers. Cosign was the de-facto Sigstore “client” from the beginning. Originally designed as a container image signing tool, it has become much more, introducing signing with ephemeral keys (with Fulcio), blob signing, attestation support, multi-cloud KMS support, and many more features.

sigstore go clients

Announcing sigstore-java 1.0

Aug 28, 2024 · Appu Goundan (@loosebazooka)

sigstore-java The sigstore-java project brings the Sigstore signing and verification paradigm to the Java ecosystem. It is built natively in Java and is easy to integrate with your Maven and Gradle builds or custom workflows. 1.0 Stable Release Today, thanks to the support of the community and work of our contributors, we’re excited to announce a 1.0 stable release of the sigstore-java client. This includes a library(dev.sigstore:sigstore-java) for programmatic access to the sigstore signing and verification APIs.

sigstore java clients

sigstore-go verification and signing now in beta

Jun 26, 2024 · Zach Steindler (GitHub)

sigstore-go verification and signing now in beta Recent sigstore-go releases include signing support, as well moving both the verification and signing API from unstable to beta. sigstore-go is used in several open source projects like the SLSA verifier, the GitHub CLI, and Stacklok Minder. Cosign and sigstore-go are similar in that they are both written in Go, but the main differences are that sigstore-go is not a full-fledged CLI, and that it supports the protobuf bundle format.

sigstore go clients

Announcing sigstore-go

Oct 5, 2023 · The Sigstore Technical Steering Committee

Announcing sigstore-go Today we’re excited to announce a new open source library, sigstore-go, that represents the future of Sigstore’s support for the Go programming language. Since the beginning, Sigstore has been primarily written in Go but there has been a gap over the past year or so since we established the Protobufs-based bundle format: the de facto standard client (Cosign) lacks support for it. Cosign-the-library is also heavily focused on OCI use cases, which makes it difficult for library integrators who want to limit their implementations to core sign/verify flows and it also supports a wide variety of verification options, which creates potentially confusing duplication.

sigstore go clients

Announcing sigstore-python 2.0

Sep 29, 2023 · William Woodruff (Trail of Bits), Dustin Ingram (Google)

We are delighted to announce the 2.0 release of sigstore-python, a Python client for signing and verifying Sigstore signatures! $ python -m pip install -U sigstore $ python -m sigstore --version sigstore 2.0.0 This release has been in the works for a while, and contains a number of significant improvements and breaking changes to both the sigstore CLI and Python APIs. We’ve also updated the official sigstore/gh-action-sigstore-python action to use the latest 2.

sigstore python clients