If the code examples are not real implementations, perhaps the user is looking for a guide based on hypothetical code or a conceptual cipher. In that case, the guide should clarify that the examples are illustrative and the actual implementation details might vary.
Also, if the decryption code is the same as encryption, that's important to note—it's a symmetric encryption method here, but that might not be secure in real-world scenarios. The example just shows the hexdump, which is reversible by converting back to bytes.
Encrypted: 48656c6c6f2c204a554c37393721 decrypted = jul797_decrypt(encrypted) print("Decrypted:", decrypted) Output :