Hill Cipher Decoder

Decode encrypted "N-Hill Cipher" messages

Requirements

• Make
• Python 3.12
• Pip >= 21.0.1
• Other requirements:
  • requirements.txt
  • requirements-dev.txt (development dependencies)

Usage

make install

The "N-Hill Cipher" technique is a substitution cipher that uses a square matrix of ordem N to encode a message (with: number of characters = multiple of N).

The Hill Cipher Decoder:

1. Asks for N;
2. Asks the user to input every element of the matrix NxN (encryption key);
3. Asks for the encrypted message;
4. The expected output is the decrypted message.

The Hill Cipher Decoder will calculate the decryption key based on the provided matrix and will decode the inputed message.

Contributing

Installing dev environment requirements:

make install-dev

Testing

make coverage