python AES GCM

以下是使用pycryptodome库实现python AES GCM的示例代码：

from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad
from Crypto.Random import get_random_bytes
from Crypto.Util import Counter

# 生成随机密钥和随机IV
key = get_random_bytes(16)
iv = get_random_bytes(16)

# 初始化加密器
cipher = AES.new(key, AES.MODE_GCM, nonce=iv)

# 加密明文
plaintext = b'This is a secret message'
ciphertext, tag = cipher.encrypt_and_digest(pad(plaintext, AES.block_size))

# 解密密文
cipher = AES.new(key, AES.MODE_GCM, nonce=iv)
decrypted_plaintext = unpad(cipher.decrypt_and_verify(ciphertext, tag), AES.block_size)

# 输出结果
print("Key:", key.hex())
print("IV:", iv.hex())
print("Ciphertext:", ciphertext.hex())
print("Tag:", tag.hex())
print("Decrypted plaintext:", decrypted_plaintext.decode())