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jim calstromleft a comment
I built The Cipher Lab because most cryptography tools fall into one of two camps: either sites that don’t scale beyond basic tools, or academic tools that are powerful but painful to use. I wanted something different — a place where you can actually think like the world's top cryptanalysts but accessible to beginners. The Cipher Lab lets you: Decode and break classical ciphers interactively...
The Cipher LabA modern playground for classical cryptography.
Existing sites offer all the same basic tools, which is fine, but I wanted to offer something more- something it felt like a real cryptanalyst could and would use, but still accessible even to absolute beginners. The Cipher Lab offers a comprehensive environment to learn about, solve and create your own ciphers. For beginners and experienced cryptanalysts.
The Cipher LabA modern playground for classical cryptography.
jim calstromstarted a discussion
The Cipher Lab
I’m proud to announce that on January 13th, 2026 at 12:01 AM PST, I’m launching a project I’ve been quietly building for a long time. The Cipher Lab is going live. A place for people who love ciphers, cryptography, and problem-solving. Stay tuned for more in the coming week- in the meantime, feel free to ask any questions and if you're into this stuff, get excited!