tools.junyo.dev

Classical Ciphers

Encode and decode Caesar, Atbash and Vigenère locally.

Output

Ciphers run locally. Do not use classical ciphers to protect real data.

Details below
About this tool

Educational reversible ciphers.

The tool implements Caesar, Atbash and Vigenère for learning, simple CTFs and examples. It is not modern cryptography.

How to use

Choose cipher and mode.

  1. Choose encode or decode.
  2. Select cipher and adjust key/shift when needed.
  3. Copy the generated output.
FAQ

Frequently asked questions

No. Classical ciphers are educational and easily broken.

Security

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