hex编码实现aes加密解密功能示例

hex编码实现AES加密解密功能示例可以按照以下步骤进行：

1. 导入所需的模块：

import binascii
from Crypto.Cipher import AES
from Crypto.Random import get_random_bytes

2. 定义AES加密和解密函数：

def encrypt(plain_text, key):
    cipher = AES.new(key, AES.MODE_EAX)
    nonce = cipher.nonce
    ciphertext, tag = cipher.encrypt_and_digest(plain_text.encode())
    return binascii.hexlify(nonce + ciphertext + tag).decode()

def decrypt(cipher_text, key):
    cipher_data = binascii.unhexlify(cipher_text)
    nonce = cipher_data[:16]
    ciphertext = cipher_data[16:-16]
    tag = cipher_data[-16:]
    cipher = AES.new(key, AES.MODE_EAX, nonce)
    decrypted_text = cipher.decrypt_and_verify(ciphertext, tag)
    return decrypted_text.decode()

3. 生成随机密钥：

key = get_random_bytes(16)

4. 加密和解密示例数据：

plain_text = "This is a sample plaintext."
cipher_text = encrypt(plain_text, key)
decrypted_text = decrypt(cipher_text, key)

完整的代码示例如下：

import binascii
from Crypto.Cipher import AES
from Crypto.Random import get_random_bytes

def encrypt(plain_text, key):
    cipher = AES.new(key, AES.MODE_EAX)
    nonce = cipher.nonce
    ciphertext, tag = cipher.encrypt_and_digest(plain_text.encode())
    return binascii.hexlify(nonce + ciphertext + tag).decode()

def decrypt(cipher_text, key):
    cipher_data = binascii.unhexlify(cipher_text)
    nonce = cipher_data[:16]
    ciphertext = cipher_data[16:-16]
    tag = cipher_data[-16:]
    cipher = AES.new(key, AES.MODE_EAX, nonce)
    decrypted_text = cipher.decrypt_and_verify(ciphertext, tag)
    return decrypted_text.decode()

key = get_random_bytes(16)
plain_text = "This is a sample plaintext."
cipher_text = encrypt(plain_text, key)
decrypted_text = decrypt(cipher_text, key)

print("Plain text:", plain_text)
print("Encrypted text:", cipher_text)
print("Decrypted text:", decrypted_text)

这样，就可以使用hex编码实现AES加密解密功能了。