python encode加解密

Python中可以使用加密算法对数据进行加解密。常用的加解密算法有AES、DES、RSA等。下面是一个使用AES算法进行加解密的示例：

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

def encrypt(plaintext, key):
    cipher = AES.new(key, AES.MODE_ECB)
    ciphertext = cipher.encrypt(pad(plaintext, AES.block_size))
    return ciphertext

def decrypt(ciphertext, key):
    cipher = AES.new(key, AES.MODE_ECB)
    plaintext = unpad(cipher.decrypt(ciphertext), AES.block_size)
    return plaintext

# 生成随机密钥
key = get_random_bytes(16)

# 待加密的明文
plaintext = b"Hello, World!"

# 加密
ciphertext = encrypt(plaintext, key)
print("加密后的密文:", ciphertext)

# 解密
decrypted_plaintext = decrypt(ciphertext, key)
print("解密后的明文:", decrypted_plaintext.decode("utf-8"))