SLSA specification
SLSA is a specification for describing and incrementally improving supply chain security, established by industry consensus. It is organized into a series of levels that describe increasing security guarantees.
This is the Working Draft of what the next version of the SLSA specification might be. It defines several SLSA levels and tracks, as well as recommended attestation formats, including provenance.
Understanding SLSA
These pages provide an overview of SLSA, how it helps protect against common supply chain attacks, and common use cases. If you’re new to SLSA or supply chain security, start here.
| Page | Description |
|---|---|
| What’s new | The changes brought by this Working Draft. |
| About SLSA | An introductory guide to SLSA |
| Supply chain threats | An introduction to supply chain threats |
| Use cases | Use cases |
| Guiding principles | Use cases |
| FAQ | Questions and more information |
| Future directions | Additions and changes being considered for future SLSA versions |
Core specification
These pages describe SLSA’s security levels and requirements for each track. If you want to achieve SLSA a particular level, these are the requirements you’ll need to meet.
| Page | Description |
|---|---|
| Terminology | Terminology and model used by SLSA |
| Tracks | Provides an overview of each track and links to more specific information. |
| Provenance | Provides a description of the concept of provenance and links to the various tracks specific definitions. |
| Producing artifacts | Detailed technical requirements for producing software artifacts, intended for platform implementers |
| Distributing provenance | Detailed technical requirements for distributing provenance, intended for platform implementers and software distributors |
| Verifying artifacts | Guidance for verifying software artifacts and their SLSA provenance, intended for platform implementers and software consumers |
| Assessing build platforms | Guidelines for securing SLSA Build L3+ builders, intended for platform implementers |
| Attesting build environments | Overview of SLSA’s Attested Build Environment track, intended for all audiences |
| Threats & mitigations | Detailed information about specific supply chain attacks and how SLSA helps |
| Securing Source Code | Overview of the Source track |
| Verifying Source Code | Guidelines for verifying source provenance |
| Verified Properties | SLSA allows a common way to express verified properties that may not fit within a SLSA track. |
Attestation formats
These pages include the concrete schemas for SLSA attestations. The Provenance and VSA formats are recommended, but not required by the specification.
| Page | Description |
|---|---|
| General model | General attestation mode |
| Build Provenance | Suggested build provenance format and explanation |
| Verification Summary | Suggested VSA format and explanation |