miscreant_aes_siv_encryption_with_associated_data.py

1import os
2from miscreant.aes.siv import SIV
3
4# Generate a random 32-byte (256-bit) key
5key = os.urandom(32)
6
7# Create a new SIV instance
8siv = SIV(key)
9
10# The message to be encrypted
11plaintext = b"Hello, world!"
12
13# Optional associated data (authenticated but not encrypted)
14associated_data = [b"header data"]
15
16# Seal (encrypt) the message
17ciphertext = siv.seal(plaintext, associated_data)
18
19# Open (decrypt) the message
20decrypted_plaintext = siv.open(ciphertext, associated_data)
21
22print(f"Original: {plaintext}")
23print(f"Decrypted: {decrypted_plaintext}")