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Substitution Cipher Workbench

This tool can be used to encode and decode messages using a Mixed Alphabet Cipher. The analyst can construct the cipher from a keyword and supporting Caesar shift to further obfuscate the pattern.

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Using The Substitution Cipher Workbench

This substitution cipher workbench can be used to encode and decode messages using monoalphabetic substitution ciphers from classical cryptography. You can create a cipher alphabet based on a keyword and a caesar shift. Messages can be encoded and decoded using this alphabet.

The solver is designed so you can experiment with different possible solutions for an unknown message. Enter the ciphertext in the message box and check for different caesar shifts.

We also have cipher decoder tools for Atbash Ciphers, a simple Caesar Cipher Decoder, and a Rot13 Decoder.

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