from Crypto.Cipher import AES

将明文和密钥都转换为字节串

plaintext = b'hello' key = b'cat'

创建AES加密器对象

cipher = AES.new(key, AES.MODE_ECB)

对明文进行填充

plaintext_padded = plaintext + (AES.block_size - len(plaintext) % AES.block_size) * b'\x00'

加密明文

ciphertext = cipher.encrypt(plaintext_padded)

打印密文

print(ciphertext.hex())