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Vigenere Cipher

Encrypt text with repeating keyword shifts and mapping previews.

Classical Ciphers
Input

Vigenere Cipher

Encrypt or decrypt text using a repeating keyword across alphabetic characters.

  • Use a clear alphabetic keyword.
  • The key is normalized to uppercase in the backend.
  • Spacing and punctuation are preserved in the result.
Status
Waiting for input
Output

Vigenere result

Review the transformed text and copy the output you want to keep.

Output preview

The transformed text and selected key will appear here.