A CTF challenge opens with a suspicious string. A log line hides encoded data. A classroom demo needs cipher transformations you can actually watch happen. Cipher Workbench puts the whole toolkit one keystroke away — select text in the editor, send it to the bench, and start pulling it apart.
Native
Chainable
Cracks it
Everyday formats
Base64, Hex and URL encoding — flip between them instantly, both directions.
The full bench
Caesar, ROT13, Atbash, Affine, Vigenère, Beaufort, Porta, Autokey, Playfair, Rail Fence, Columnar and XOR.
Read the shape of it
Character counts, entropy, index of coincidence, language hints and frequency views — the tells that point you at the answer.
When you don't know yet
Run cracking passes against likely cipher families and surface the strongest readable candidates.
Chain discoveries by sending output straight back into the input. Copy results out, insert them into your editor, and keep experimenting until it reads clean.
— A CTF challenge starts with a suspicious string and a ticking clock.
— A log contains encoded data that needs a quick, quiet look.
— A classroom demo needs visible cipher transformations, not hand-waving.
— A puzzle wants frequency analysis and a few cracking passes.
Part lab bench, part puzzle box: practical enough for real work, playful enough that cracking a Caesar shift still feels like a tiny victory.
Install it and crack something.
Cipher Workbench is on the Visual Studio Marketplace. Prefer no install? The same engine runs entirely in your browser at cipher.dixon.cx — no upload, no server round-trips.
Install from MarketplaceFound a cipher it can't budge?
Ideas for new ciphers, attacks or analysis views are always welcome — drop me a line.
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