# github-keygen を Homebrew でインストール github-keygen のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。 ## インストール ```sh sudo av install brew:github-keygen ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install github-keygen ``` 証拠: local Homebrew formula metadata ## パッケージ情報 - **パッケージキー:** brew:github-keygen - **パッケージマネージャ:** Homebrew - **バージョン:** 1.401 - **ソース概要:** Bootstrap GitHub SSH configuration - **ホームページ:** - **リポジトリ:** - **生成日時:** 2026-08-03T19:37:03+00:00 ## 実行可能ファイル - github-keygen (エイリアス) ## インストール挙動 - Bottle: 利用不可 ## バージョンと鮮度 - ページ生成日: 2026-08-03 - マネージャ版: 1.401 ## プロジェクトの歴史と使われ方 github-keygen is a small Perl utility by Olivier Mengue for bootstrapping and maintaining OpenSSH configuration for GitHub. It creates a dedicated GitHub SSH key, writes a dedicated SSH config section, and installs GitHub host fingerprints in a separate known-hosts file. ### プロジェクトの歴史 The repository history begins with an initial release in May 2011. Its author-maintained README frames the tool as a one-shot wizard rather than a long-running daemon or library: users clone it, run it for a GitHub account, inspect the generated SSH configuration, and can remove the tool afterward. The changelog shows the project tracking practical SSH and GitHub changes over time: stronger cipher choices in the 1.020 series, OpenSSH roaming mitigation in 1.101, generated-config versioning in 1.200, GitHub key comparison in 1.300, larger and then Ed25519 default keys in later releases, and post-quantum key-exchange list updates in 1.401. ### 採用の歴史 Adoption appears niche and security-oriented. The tool serves users who want repeatable GitHub SSH setup, multiple GitHub accounts, per-machine keys, host aliases, strict host checking, and conservative handling of an existing SSH config. ### 使われ方 Practitioners run github-keygen with a GitHub username to generate or update SSH files under ~/.ssh. The generated setup gives GitHub its own key, known_hosts file, public-key-only authentication, strict host checking, and account-specific host aliases for Git remotes. The README emphasizes local auditability: the script is readable Perl, writes configuration files rather than a resident service, and can check GitHub public endpoints to verify registered keys unless the offline flag is used. ### パッケージ好きにとっての重要性 Its package value is in codifying a careful SSH setup that many developers otherwise perform by hand. That makes it a tiny but opinionated tool for users who maintain several GitHub identities or machines and prefer generated config over checklist-driven setup. ### タイムライン - 2011: Initial release appears in the repository history. - 2012: v1.000 begins the tagged release stream. - 2016: v1.101 adds OpenSSH roaming vulnerability mitigation. - 2022: v1.306 changes default key size and removes older GitHub host-key algorithms. - 2025: v1.400 switches new keys to Ed25519 by default. ### Related projects - github-keygen relates to OpenSSH, GitHub SSH authentication, Git for Windows, and GitHub's SSH key-management workflow. ### ソース - - - ## セキュリティノート broad file, network, media, or database tool signal. - **Geiger リスク:** blue / 中 - broad file, network, media, or database tool signal ## Configuration and credential file locations These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval. ## Configuration files - Unix: ~/.ssh/config ## Credential files - Unix: ~/.ssh/id_@github ## Combined YAML source View the package source record on GitHub. [combined/github-keygen.yml](https://github.com/mxcl/pkgdb/blob/main/combined/github-keygen.yml) ## ソース - pkg.so package database - Geiger risk classifier - curated configuration and credential file locations - curated package history - pkgdb category and tag curation - cross-ecosystem install command graph