passphrase

passphrase is a minimal, secure, and entirely offline passphrase generator for Linux systems.

It uses the EFF Large Wordlist to generate human-readable, high-entropy passphrases suitable for use as passwords, encryption keys, or anything else that needs strong but memorable security.

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🔐 Features

• Installs to /usr/local/bin/passphrase

• Uses the EFF diceware wordlist (large) (downloaded once to ~/.eff/wordlist.txt)

• Secure random word selection using Python’s secrets module

• Works fully offline after first install

• Simple CLI interface:

  passphrase 6

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🧱 Prerequisites

You need:

• Python 3.6+ (installed on most Linux distros by default)
• curl
• sudo privileges (for installing to /usr/local/bin)

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🛠 Installation

To install globally, run:

curl -fsSL https://raw.githubusercontent.com/JackBinary/passphrase/refs/heads/main/install_passphrase.sh | bash

This will:

• Download the CLI tool from your GitHub repo
• Install it to /usr/local/bin/passphrase
• Download the EFF wordlist to ~/.eff/wordlist.txt if it doesn't already exist

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🧪 Usage

passphrase             # default: 6 words
passphrase 8           # generate 8 words

Example output:

acoustic-fossil-barrel-embrace-compute-saddle

You can use these as-is or adapt them for password managers, GPG keys, etc.

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🔒 Why Passphrases?

Passphrases like correct horse battery staple are easier to remember than complex strings like s$9Jv!dD2, and with enough words, they're equally or more secure. This tool generates entropy equivalent to 77+ bits when using 6 words from the EFF list.

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📄 License

This project is licensed under the Apache License 2.0.