# sha2 を Homebrew, dnf でインストール sha2 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:sha2 ``` 追加のインストールコマンド: ### macOS - Homebrew (100%): ```sh brew install sha2 ``` 証拠: local Homebrew formula metadata ### Linux - dnf (92%): ```sh sudo dnf install sha2 ``` 証拠: Fedora Rawhide package metadata: sha2 from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst ## パッケージ情報 - **パッケージキー:** brew:sha2 - **パッケージマネージャ:** Homebrew - **バージョン:** 1.0.1 - **ソース概要:** Implementation of SHA-256, SHA-384, and SHA-512 hash algorithms - **ホームページ:** - **最終更新:** 2026-06-22T08:08:16+02:00 - **生成日時:** 2026-08-03T19:37:03+00:00 ## 実行可能ファイル - sha2 (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: 1.0.1 ## プロジェクトの歴史と使われ方 SHA-2 is Aaron D. Gifford's BSD-licensed C implementation of the SHA-224, SHA-256, SHA-384, and SHA-512 secure hash algorithms, accompanied by a small `sha2` command-line program. ### プロジェクトの歴史 Gifford dates the original implementation to a weekend in autumn 2000, specifically 14 October, when the SHA-256, SHA-384, and SHA-512 algorithms were newly described. The author distributes the implementation from his own cryptographic-hashing pages as source archives rather than through a public source-control forge. ### 採用の歴史 The supplied package metadata records packages in Homebrew and DNF-based distributions. Its adoption is therefore best understood as a compact reference implementation and hashing utility preserved by package collections rather than a broad end-user application. ### 使われ方 The `sha2` executable computes SHA-2 message digests for files or input, while the C sources can also be embedded by developers who need the covered hash functions. It requires no persistent configuration or credentials. ### パッケージ好きにとっての重要性 The package captures an early open-source implementation of the SHA-2 family close to the algorithms' introduction. It remains interesting as small, auditable C code and as a historical alternative to the hashing commands bundled with larger cryptographic toolkits. ### タイムライン - 2000: Aaron D. Gifford implemented the newly described SHA-256, SHA-384, and SHA-512 algorithms in C. - Later: SHA-224 and SHA-1 support appeared on the author's consolidated BSD-licensed implementation page. ### Related projects - The author's cryptographic code collection also includes SHA-1 and HMAC-SHA1 implementations; modern general-purpose toolkits provide overlapping digest commands and libraries. ### ソース - - - source_facts.description - source_facts.executables - source_facts.package-manager ## セキュリティノート narrow executable package without higher-risk signals. - **Geiger リスク:** グリーン / 低 - narrow executable package without higher-risk signals ## 他のパッケージマネージャ記録 - dnf - sha2 - 1.0.1-32.fc45: normalized package name match | Fedora Rawhide package metadata: sha2 from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | SHA Implementation Library | http://www.aarongifford.com/computers/sha.html - dnf - sha2-devel - 1.0.1-32.fc45: normalized package name match | Fedora Rawhide package metadata: sha2-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Development files for sha2 | http://www.aarongifford.com/computers/sha.html ## Combined YAML source View the package source record on GitHub. [combined/sha2.yml](https://github.com/mxcl/pkgdb/blob/main/combined/sha2.yml) ## ソース - 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