cifer ☆
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Description:
Work on automating classical cipher cracking in C
Type: Formula  |  Latest Version: 1.2.0@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Security
Tags: cryptography security cipher encryption cli
Install: brew install cifer
About:
Cifer is a command-line utility designed to automate the process of cracking classical ciphers. It provides a suite of tools for frequency analysis, dictionary attacks, and algorithmic decryption of historical ciphers. The tool is valuable for cryptography education, CTF challenges, and security research involving legacy encryption methods.
Key Features:
  • Automated frequency analysis for text
  • Support for multiple classical ciphers (e.g., Caesar, Vigenère)
  • Dictionary attack capabilities
  • Interactive command-line interface
Use Cases:
  • Solving classical cryptography challenges in CTFs
  • Educational tool for learning historical ciphers
  • Decrypting legacy encoded messages
Alternatives:
  • ciphey – Ciphey is a modern Python tool using AI for automated decryption, whereas Cifer is an older C-based tool focused on manual classical cipher analysis.
  • quasiquip – Quasiquip is a newer, fast tool for classical cipher solving, often preferred over Cifer for its speed and modern features.
License: GPL-3.0-or-later
Dependencies: readline
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, arm64_big_sur, sonoma, ventura, monterey, big_sur, catalina, arm64_linux, x86_64_linux
Version History
Detected Version Rev Change Commit
Sep 12, 2025 8:45pm 0 VERSION_BUMP f9ba4694
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