Homophonic Cipher

Encrypt and decrypt text using a homophonic substitution cipher. Each letter maps to multiple numeric codes based on English letter frequency, making frequency analysis harder.

How to Use Homophonic Cipher

Select encrypt or decrypt mode, enter your text, and click the button. Encryption produces space-separated numeric codes; decryption converts codes back to letters.

Step-by-Step Instructions

  1. Select Encrypt or Decrypt mode
  2. Enter plaintext or numeric ciphertext
  3. Click the Encrypt or Decrypt button
  4. Copy the result from the output area

Related Tools

More Free Tools