You can download Windows™ software simulations of cipher machines and crypto tools on the appropriate web pages. All software is written by myself and available as freeware for personal use and educational purposes. No trial versions, no shareware and no registration, only really free software! I don't have any commercial goals and do not advertise anything. I only advertise cryptology and its fascinating history (see also website info)

Please download the software only from this official website to ensure you have the most recent and legitimate version, and carefully read the "readme.txt" file and installation instructions. Because the source code from some software is available on the Internet, you might encounter malicious clones elsewhere.

You can check the integrity of all downloads on this website with the SHA-256 Hash Check.

Downloads on this Website

• WWII German Enigma Cipher Machine Simulator
• Enigma Codebook Tool
• WWII U.S. M-209 Cipher Cipher Machine Simulator
• Cold War U.S. TSEC/KL-7 Cipher Machine Simulator
• Cold War Hagelin BC-52 Cipher Machine Simulator

• Numbers 9.0 Crypto Secure Cipher Pad Generator
• Cipher Classics Encryption Tool
• Crypto Box Text Shuffle Program
• CT-46 OTP one-time pad training tool (direct Zip download)

This website and the downloads do not contain any spyware, adware or other malware and is checked on a regular basis to keep it free from harmful software. Nonetheless, I encourage all visitors to check all downloads on this website with the SHA-256 Hash Check and their own anti-virus software. Prudence is a good habit!