Encryption and Decryption using matrix-inverse (Engineering math)

Problem

The given key matrix is [[17, 17, 5], [21, 18, 21], [2, 2, 19]] , and plaintext is “paymoremoney”. You have to first generate the ciphertext and then plaintext from the ciphertext.

Code

1. Please refer to matrix_crypt.py
2. Using matrix inverse method without packages