Encrypt messages with the ancient Roman shift cipher.
Named after Julius Caesar, who used it to protect military secrets. It's one of the earliest and simplest forms of encryption, involving a simple 'shift' of the alphabet.
Enter your message and select a shift value (the 'key'). Your text will instantly transform into a scrambled code that only someone with the key can decipher.
Result will appear here...
Julius Caesar actually used this! He typically used a shift of 3 to protect military messages. It's one of the simplest forms of encryption, easily broken today by frequency analysis, but was state-of-the-art in 50 BC!
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