Porta Cipher
Encrypt and decrypt text using the Porta cipher, a reciprocal polyalphabetic substitution cipher. The same operation encrypts and decrypts with a keyword.
How to Use Porta Cipher
Enter a keyword and your plaintext or ciphertext, then click Encrypt/Decrypt. The Porta cipher is reciprocal so the same operation works for both.
Step-by-Step Instructions
- Enter an alphabetic keyword
- Type or paste text to encrypt or decrypt
- Click Encrypt/Decrypt to process
- Copy the result from the output area
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