# ssss を Homebrew, apk, apt, dnf, MacPorts, Nix でインストール

ssss 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:ssss
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install ssss
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install ssss
```

  証拠: MacPorts ports tree: security/ssss/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

### Linux

- apk (92%):

```sh
sudo apk add ssss
```

  証拠: Alpine Linux edge package indexes: ssss from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz

- Debian apt (92%):

```sh
sudo apt install ssss
```

  証拠: Debian stable package indexes: ssss from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

- dnf (92%):

```sh
sudo dnf install ssss
```

  証拠: Fedora Rawhide package metadata: ssss from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst

- Nix (92%):

```sh
nix profile install nixpkgs#ssss
```

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

## パッケージ情報

- **パッケージキー:** brew:ssss
- **パッケージマネージャ:** Homebrew
- **バージョン:** 0.5
- **ソース概要:** Shamir's secret sharing scheme implementation
- **ホームページ:** <http://point-at-infinity.org/ssss/>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- ssss-combine (エイリアス)
- ssss-split (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: 0.5
## プロジェクトの歴史と使われ方

ssss is a small Unix-oriented command-line implementation of Shamir's Secret Sharing Scheme. Its package-manager identity is unusually literal: it ships two commands, ssss-split and ssss-combine, for turning a secret into threshold shares and reconstructing it from enough shares.

### プロジェクトの歴史

The official project page says ssss was written in 2006 by B. Poettering, licensed under GPL v2, linked against GNU libgmp, and designed for UNIX/Linux machines using /dev/random as an entropy source. The homepage distributes release tarballs from 0.1 through 0.5 rather than pointing to a public source-control repository.

### 採用の歴史

The project page notes a Debian package and Freshmeat announcements, reflecting the mid-2000s Unix packaging path for small security tools. The supplied package facts show it later remained available across Homebrew, Debian, Ubuntu, Fedora/DNF, Alpine, MacPorts, and Nix, which is the sort of long-tail packaging that keeps old but useful CLI cryptography tools reachable.

### 使われ方

Typical usage is interactive: ssss-split prompts for a secret and emits numbered shares for a threshold scheme, while ssss-combine reads enough shares to reconstruct the secret. The manpage also documents hex mode for binary material, quiet modes for scripts, and a hybrid pattern where large data is encrypted with tools such as OpenSSL or GPG and only the key is shared.

### パッケージ好きにとっての重要性

Package maintainers care about ssss because it is a compact, classic Unix security utility with stable command names and few moving parts. Its continued presence in multiple package managers makes it a reference point for threshold-secret workflows even when newer tools wrap Shamir sharing with additional authentication or modern cryptographic framing.

### タイムライン

- 2006: Official project page says ssss was written by B. Poettering.
- 2006: ssss 0.1 through 0.5 tarballs were published on the project homepage.
- 2018: Official homepage copyright and last-modified metadata show the page was still maintained.

### Related projects

- The homepage links ssss to the broader Shamir secret sharing tradition and mentions seccure as another cryptography project by the same author. Its usage notes also point to OpenSSL and GPG for encrypting larger payloads before splitting only the symmetric key.

### ソース

- <http://point-at-infinity.org/ssss/>
- <http://point-at-infinity.org/ssss/ssss.1.html>
- 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

- Debian apt - ssss - 0.5-5: normalized package name match | Debian stable package indexes: ssss from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Shamir's secret sharing scheme implementation | http://point-at-infinity.org/ssss/
- Nix - ssss: normalized package name match | nixpkgs package indexes: pkgs/by-name/ss/ssss/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- Ubuntu apt - ssss - 0.5-5: normalized package name match | Ubuntu 24.04 LTS package indexes: ssss from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Shamir's secret sharing scheme implementation | http://point-at-infinity.org/ssss/
- apk - ssss - 0.5.7-r0: normalized package name match | Alpine Linux edge package indexes: ssss from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | ssss is an implementation of Shamir's secret sharing scheme for UNIX systems | http://point-at-infinity.org/ssss/
- apk - ssss-doc - 0.5.7-r0: normalized package name match | Alpine Linux edge package indexes: ssss-doc from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | ssss is an implementation of Shamir's secret sharing scheme for UNIX systems (documentation) | http://point-at-infinity.org/ssss/
- dnf - ssss - 0.5-37.fc45.2: normalized package name match | Fedora Rawhide package metadata: ssss from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | Shamir's secret sharing scheme | http://point-at-infinity.org/ssss
- MacPorts - ssss: normalized package name match | MacPorts ports tree: security/ssss/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1


## Combined YAML source

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