Sigstore Community Blog

Announcing the Sigstore Clients Special Interest Group (sig-clients)

May 26, 2023 · sigstore

We are delighted to announce the creation of the Clients Special Interest Group (sig-clients) for the Sigstore project. This exciting new initiative marks the first SIG for Sigstore and serves as an experiment in organizing efforts across the Sigstore project. The sig-clients repository is your one-stop shop for all things related to Sigstore clients across various languages and ecosystems. This group has the following mission: Make Sigstore clients across languages/ecosystems easy-to-write, compatible, and secure by providing shared designs/documentation, data formats, and test suites.

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Bringing Privacy and Security Full Circle Through Automated Authentication

May 19, 2023 · sigstore

This is a Sigstore case study contributed by Max Furman of Smallstep No matter how well you think you secure your software supply chain, the possibility of a breach is always in the back of your mind. We recently had a moment of panic where we thought, “Did someone get access to some things we stored in secrets?” I wondered what damage they’d done and how quickly we could repair it.

sigstore cosign supply chain security open source devops

Sigstore Support in npm launches for Public Beta

Apr 19, 2023 · The Sigstore Technical Steering Committee

We’re thrilled to announce that the npm project has launched a public beta, bundling Sigstore support directly into the npm Command-Line Interface (CLI). This innovation brings strong origin guarantees to the npm ecosystem and marks the first time that a large package registry technology is using public software signatures to attest to a package’s originating source code and build instructions. Sigstore is an OpenSSF project that enables developers to validate that the software they are using is exactly what it claims to be using cryptographic digital signatures and transparency log technologies.

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Cosign 2.0 Released!

Feb 23, 2023 · Hayden Blauzvern

Cosign 2.0 has arrived! Cosign 2.0 follows Sigstore’s General Availability launch, which offers production grade stable services for artifact signing and verification. Cosign’s most significant change is to no longer require COSIGN_EXPERIMENTAL=1, since the Sigstore services are now stable! By default, Cosign will fetch an identity-based certificate from Fulcio when a signing key is not provided, and upload the signature and signing key to Rekor to provide transparency. The following is the list of breaking changes:

sigstore cosign security opensource

Cosign and Policy-controller with GKE, Artifact Registry and KMS

Feb 10, 2023 · Mathieu Benoit

As soon as I came back from KubeCon NA 2022, my first ever in-person KubeCon, I felt re-energized. What a community, full of people eager to share knowledge and expertise with each others, so inspiring. I mostly attended sessions about security best practices for containers and Kubernetes (that’s what excites me these days!). Secure Software Supply Chain (S3C) was almost mentioned everywhere, for good reasons. Sigstore as a new standard for signing, verifying and protecting software, got its first own SigstoreCon as co-located event and hit the General Availability (GA) milestone.

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Towards Easier, More Secure Signature Technology for the Java Ecosystem with Sigstore

Feb 4, 2023 · Sigstore

In October 2022, the Sigstore project announced the General Availability of its free software signing service giving open source communities access to production-grade services for artifact signing and verification. As the project matures, so do the language client integrations that are actively being developed. In January 2023, sigstore-python announced the 1.0 version of Sigstore for Python. The Java community has always taken a mature approach to security. So it should come as no surprise that there is plenty of activity towards integrating Sigstore into the existing ecosystem and offering first-class support for software signing and verification with Sigstore.

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Sigstore January Roundup

Feb 1, 2023 · Sigstore

This month, we are thrilled to have announced the 1.0 release of sigstore-python. This project started a year ago to provide a Sigstore-compatible client similar to cosign, but built entirely with Python and easily adoptable by the Python ecosystem. A big thank you to all the contributors and maintainers for making it to 1.0! Read more Latest Blog Posts Thank you to Andrew, Felix and Zachary for contributing the following blog posts this month.

sigstore security softwaresupplychain supplychainsecurity update

A Guide to Running Sigstore Locally

Jan 24, 2023 · Felix Wolff

Co-authored with Andrew Block A key concept in Sigstore is its availability. Anyone can leverage the hosted tooling to sign, publish and verify assets and incorporate it into their security processes. In a corporate context with private repositories and private artifacts as well as restricted access to external resources, it must be questioned whether it makes sense to use the public Sigstore deployment. Sensitive information might be exposed. Given the principles of the Sigstore architecture, it cannot be erased or fenced off.

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Announcing the 1.0 release of sigstore-python

Jan 14, 2023 · di_codes

The sigstore-python project began 1 year ago in January 2022 with the goal of providing a Sigstore-compatible client similar to cosign, but built entirely with Python and easily adoptable by the Python ecosystem. Today, thanks to the support of the community and work of 18 unique contributors, we’re excited to announce a usable and reference-quality 1.0 stable release of that client, which includes an importable Python API as well as a fully functional CLI.

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Why you can’t use Sigstore without Sigstore

Jan 6, 2023 · Zachary Newman

Photo by C Dustin on Unsplash I was delighted to see a recent preprint that mentioned Sigstore appear on the IACR’s Cryptology ePrint Archive. The reason that we published an academic paper, Sigstore: Software Signing for Everybody, was to encourage the scrutiny of the research community. Progress in the field of computer security only comes from the back-and-forth between proposed defenses and offensive analyses of those techniques, and we welcome third-party analysis of the project.

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