Tools/Text/Vigenere Cipher Encoder and Decoder
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Vigenere Cipher Encoder and Decoder

Encode or decode alphabetic text with a keyword-based Vigenere cipher for classical cryptography exercises.

Input0 characters
Result0 characters

Input and result notes

Vigenere uses a repeating alphabetic key to choose letter shifts. Decoding needs the original key. This historical cipher is educational, not suitable for modern data protection.

Text
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