# cifer を Homebrew でインストール

cifer 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:cifer
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install cifer
```

  証拠: local Homebrew formula metadata

## パッケージ情報

- **パッケージキー:** brew:cifer
- **パッケージマネージャ:** Homebrew
- **バージョン:** 1.2.0
- **ソース概要:** Work on automating classical cipher cracking in C
- **ホームページ:** <https://code.google.com/p/cifer/>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- cifer (エイリアス)
- cifer-dict (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: 1.2.0
## プロジェクトの歴史と使われ方

cifer is a small C command-line toolkit for classical cryptanalysis: affine, Vigenere, Bacon, rail-fence, columnar transposition, frequency analysis, buffers, dictionaries, and scripting-oriented shell commands.

### プロジェクトの歴史

The 1.2.0 source tarball identifies cifer as copyright 2008 by Simrun Basuita and Daniel Richman. Its bundled CHANGES file records an initial 1.0.0 release on 2008-11-29, several maintenance releases in late 2008, and 1.2.0 on 2009-03-10.

The project lived on Google Code and is now represented by the Google Code Archive, which makes it a preserved example of pre-GitHub open-source Unix CLI packaging.

### 採用の歴史

Homebrew packages cifer 1.2.0 from the Google Code Archive storage tarball and bottles it for macOS and Linux. The Homebrew formula metadata carries a Linux linker-order patch and a readline dependency adjustment, showing the package has been kept buildable despite the upstream project being archival.

Homebrew analytics are very small, with single-digit recent monthly install-on-request counts, so cifer is best understood as a niche historical/security utility rather than a broadly adopted modern security tool.

### 使われ方

The cifer manpage describes an interactive shell with script support. Users load ciphertext into buffers, apply filters, run frequency analysis, brute-force or solve supported classical ciphers, and use cifer-dict to build dictionaries for dictionary-assisted attacks.

### パッケージ好きにとっての重要性

For package maintainers, cifer is interesting because it is an archived Google Code-era C program that Homebrew still builds, bottles, patches on Linux, and tests by invoking the binary. It is the kind of small historical CLI that survives in package managers long after its original hosting platform disappeared.

### タイムライン

- 2008: cifer copyright year and authorship recorded in the bundled README.
- 2008-11-29: Initial 1.0.0 release recorded in CHANGES.
- 2008-12-17: 1.1.0 added libreadline support.
- 2009-03-10: 1.2.0 released, later used as the Homebrew stable version.
- 2016: Google Code Archive became the long-term home for Google Code projects after Google Code Project Hosting shutdown.

### Related projects

- cifer-dict is the companion executable shipped with cifer for creating dictionaries used by cifer's dictionary-assisted cracking commands.
- Homebrew's cifer formula is the active packaging surface that keeps the archived source buildable on current macOS and Linux systems.

### ソース

- <https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/cifer/cifer-1.2.0.tar.gz>
- <https://code.google.com/archive/p/cifer>
- <https://formulae.brew.sh/api/formula/cifer.json>
- <https://raw.githubusercontent.com/Homebrew/homebrew-core/master/Formula/c/cifer.rb>


## 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


## Combined YAML source

View the package source record on GitHub. [combined/cifer.yml](https://github.com/mxcl/pkgdb/blob/main/combined/cifer.yml)


## ソース

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- cross-ecosystem install command graph