Straddling Checkerboard Cipher

Encrypt and decrypt text using the Straddling Checkerboard cipher. A fractionating cipher that produces variable-length numeric ciphertext for compact encoding.

How to Use Straddling Checkerboard Cipher

Select encrypt or decrypt mode, enter your text or numeric ciphertext, and click the button. High-frequency letters get single-digit codes for compact output.

Step-by-Step Instructions

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

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