# Install c2patool

CLI for working with C2PA manifests and media assets. Version 0.26.65 via Homebrew; verified 2026-06-09.

## Install

```sh
sudo av install brew:c2patool
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install c2patool
```

  Evidence: local Homebrew formula metadata

### Linux

- Nix (92%):

```sh
nix profile install nixpkgs#c2patool
```

  Evidence: nixpkgs package indexes: pkgs/by-name/c2/c2patool/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

## Package Facts

- **Package key:** brew:c2patool
- **Package manager:** Homebrew
- **Package manager URL:** <https://formulae.brew.sh/formula/c2patool>
- **Version:** 0.26.65
- **Source summary:** CLI for working with C2PA manifests and media assets
- **Homepage:** <https://contentauthenticity.org>
- **Repository:** <https://github.com/contentauth/c2pa-rs>
- **Upstream docs:** <https://github.com/contentauth/c2pa-rs/blob/main/cli/README.md>
- **License:** Apache-2.0 OR MIT
- **Source archive:** <https://github.com/contentauth/c2pa-rs/archive/refs/tags/c2patool-v0.26.65.tar.gz>
- **Last updated:** 2026-06-09T23:51:54Z
- **Generated:** 2026-06-10T07:18:26+00:00

## Executables

- c2patool (cli)
- c2patool (alias)

## Dependencies

- openssl@4

## Build Dependencies

- pkgconf
- rust

## Install Behavior

- Post-install hook: not defined
- Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux

## Freshness

- Page generated: 2026-06-10
- Package-manager version: 0.26.65
- Package-manager updated: 2026-06-09
- Local data status: ok
- Upstream repository: https://github.com/contentauth/c2pa-rs
- Upstream latest detected: c2patool-v0.26.65 (current)

## セキュリティノート

no executable entrypoint in the package index.

- **Geiger risk:** green / low
- no executable entrypoint in the package index

## Source Database Details

- **Source Database:** Homebrew formula API
- **Tap:** homebrew/core
- **Full Name:** c2patool
- **Version Scheme:** 0
- **Revision:** 0
- **Head Version:** HEAD
- **Bottle Stable Root URL:** <https://ghcr.io/v2/homebrew/core>
- **Deprecated:** no
- **Disabled:** no
- **Keg Only:** no
- **URL Keys:** head, stable

## Other Package-Manager Records

- Nix - c2patool: normalized package name match | nixpkgs package indexes: pkgs/by-name/c2/c2patool/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1


## Related Links

- [Terminal utility packages](https://www.automicvault.com/ja/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata.
- [Networking and protocol packages](https://www.automicvault.com/ja/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata.
- [Media and graphics packages](https://www.automicvault.com/ja/pkg/media-graphics-tools/) - Matched media, image, audio, video, or graphics metadata.
- [Security and crypto packages](https://www.automicvault.com/ja/pkg/security-crypto-tools/) - Matched security, identity, cryptography, password, signing, or certificate metadata.
- [openssl@4](https://www.automicvault.com/ja/pkg/brew/openssl-4/) - Runtime dependency declared by Homebrew.
- [pkgconf](https://www.automicvault.com/ja/pkg/brew/pkgconf/) - Build dependency declared by Homebrew.
- [rust](https://www.automicvault.com/ja/pkg/brew/rust/) - Build dependency declared by Homebrew.
- [mat2](https://www.automicvault.com/ja/pkg/brew/mat2/) - Shares av.db curated category or tags: cli, metadata, security.
- [vexctl](https://www.automicvault.com/ja/pkg/brew/vexctl/) - Shares av.db curated category or tags: cli, metadata, security.
- [mac-robber](https://www.automicvault.com/ja/pkg/brew/mac-robber/) - Shares av.db curated category or tags: cli, metadata, security.
- [gnutls](https://www.automicvault.com/ja/pkg/brew/gnutls/) - Shares av.db curated category or tags: cli, security.
- [gnupg](https://www.automicvault.com/ja/pkg/brew/gnupg/) - Shares av.db curated category or tags: cli, security.
- [krb5](https://www.automicvault.com/ja/pkg/brew/krb5/) - Shares av.db curated category or tags: cli, security.
- [p11-kit](https://www.automicvault.com/ja/pkg/brew/p11-kit/) - Shares av.db curated category or tags: cli, security.
- [nettle](https://www.automicvault.com/ja/pkg/brew/nettle/) - Shares av.db curated category or tags: cli, security.
- [aircrack-ng](https://www.automicvault.com/ja/pkg/brew/aircrack-ng/) - Security-sensitive metadata or terminology overlaps. Shared terms: cli, openssl, openssl-4, security.
- [easy-rsa](https://www.automicvault.com/ja/pkg/brew/easy-rsa/) - Security-sensitive metadata or terminology overlaps. Shared terms: cli, openssl, openssl-4, security.
- [encfs](https://www.automicvault.com/ja/pkg/brew/encfs/) - Security-sensitive metadata or terminology overlaps. Shared terms: cli, openssl, openssl-4, security.

## Sources

- Nucleus package database
- Geiger risk classifier
- package-page enrichment
- package version freshness
- av.db category and tag curation
- package relationship graph
- external package-manager database matches
- cross-ecosystem install command graph