pycryptodomex_aes256_gcm_encryption_decryption_quickstart.py

1from Cryptodome.Cipher import AES
2from Cryptodome.Random import get_random_bytes
3
4data = b"secret data"
5key = get_random_bytes(32)
6
7# Encryption
8cipher = AES.new(key, AES.MODE_GCM)
9ciphertext, tag = cipher.encrypt_and_digest(data)
10
11# Transmission
12nonce = cipher.nonce
13
14# Decryption
15cipher = AES.new(key, AES.MODE_GCM, nonce=nonce)
16plaintext = cipher.decrypt_and_verify(ciphertext, tag)
17
18print(f"Plaintext: {plaintext.decode('utf-8')}")