# 使用 Homebrew, Nix 安装 witness 查看 witness 的安装路径、可执行文件、元数据以及面向 AI 代理工作流的安全说明。 ## 安装 ```sh sudo av install brew:witness ``` 其他安装命令: ### macOS - Homebrew (100%): ```sh brew install witness ``` 证据: local Homebrew formula metadata ### Linux - Nix (92%): ```sh nix profile install nixpkgs#witness ``` 证据: nixpkgs package indexes: pkgs/by-name/wi/witness/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## 软件包事实 - **软件包键:** brew:witness - **软件包管理器:** Homebrew - **版本:** 0.12.0 - **来源摘要:** Automates, normalizes, and verifies software artifact provenance - **主页:** - **仓库:** - **最后更新:** 2026-08-02T12:51:38+01:00 - **已生成:** 2026-08-03T19:37:03+00:00 ## 可执行文件 - witness (别名) ## 安装行为 - Bottle: 不可用 ## 版本和新鲜度 - 页面生成时间: 2026-08-03 - 管理器版本: 0.12.0 ## 项目历史与用法 Witness is an in-toto supply-chain security CLI for producing and verifying attestations about software artifacts and build steps. The project describes itself as a pluggable framework that automates, normalizes, and verifies software artifact provenance, combining attestation generation with a policy engine. ### 项目历史 Witness originated at TestifySec and was later donated to the CNCF in-toto ecosystem. TestifySec's open-source statement dates the formal donation of Witness and Archivista to January 2024, after ratification by the in-toto steering committee, giving the project community governance under the same ecosystem as the in-toto specification. ### 采用历史 Witness sits inside the broader in-toto adoption story. CNCF records in-toto as accepted on August 14, 2019, moved to Incubating on March 10, 2022, and Graduated on February 10, 2025. That matters for Witness because it implements the in-toto specification in a CLI intended for real pipelines, and its README points users to CNCF Slack channels and open community meetings rather than a vendor-only support path. The project is also tied to adjacent supply-chain standards and systems. The Witness README lists support for in-toto enhancement work, OPA Rego policy, Sigstore and SPIFFE/SPIRE signing paths, timestamp authorities, and Archivista storage, reflecting the post-SolarWinds era movement toward verifiable build provenance, signed attestations, and policy-driven release gates. ### 使用方式 A typical Witness workflow runs a command under `witness run` during a build or release step, collects attestations from configured attestors, signs them, and later verifies the resulting collection against a signed policy. The goal is to answer who performed a supply-chain step, what materials and products were involved, and whether the step satisfied policy before an artifact is trusted or deployed. ### 为什么软件包爱好者会关心 For package and release engineers, Witness is significant because it turns provenance from a document attached at the end of a release into machine-verifiable metadata emitted by each lifecycle step. It is part of the same tooling vocabulary as SLSA provenance, Sigstore signing, OPA/Rego policy, and SBOM/attestation storage, making it a package-nerd tool for proving how an artifact came to exist. ### 时间线 - 2021-12-03: the current GitHub repository was created. - 2024-01: TestifySec donated Witness and Archivista as in-toto subprojects. - 2025-02-10: in-toto reached CNCF Graduated maturity, strengthening the ecosystem context around Witness. ### 来源 - - - - - ## 安全说明 narrow executable package without higher-risk signals. - **Geiger 风险:** 绿色 / 低 - narrow executable package without higher-risk signals ## 其他软件包管理器记录 - Nix - witness: normalized package name match | nixpkgs package indexes: pkgs/by-name/wi/witness/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/witness.yml](https://github.com/mxcl/pkgdb/blob/main/combined/witness.yml) ## 来源 - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph