pycryptodome_aes256_eax_mode_encrypt_decrypt_with_authentication.py

1from Crypto.Cipher import AES
2from Crypto.Random import get_random_bytes
3
4# Encryption
5data = b'secret data'
6key = get_random_bytes(32)  # AES-256
7cipher = AES.new(key, AES.MODE_EAX)
8nonce = cipher.nonce
9ciphertext, tag = cipher.encrypt_and_digest(data)
10
11# Decryption (usually in a different script/process)
12cipher = AES.new(key, AES.MODE_EAX, nonce=nonce)
13plaintext = cipher.decrypt_and_verify(ciphertext, tag)
14
15print(f"Plaintext: {plaintext.decode('utf-8')}")