某Bit数据解密算法

from Crypto.Cipher import AES

from Crypto.Util.Padding import unpad

import base64





def Ie(e, n, iv):

    """

    e: 被加密的数据 data

    n: AES 解密用到的key（加密的秘钥） necromancer

    iv: 初始化向量(AES CBC模式加密增加随机性加密的一个参数)

    """

    # Convert base64 encoded string to bytes

    e = base64.b64decode(e)



    # Parse key and IV

    key = n.encode('utf-8')

    iv = iv.encode('utf-8')  # Assuming this is the default IV if not provided



    # Create AES cipher in CBC mode

    cipher = AES.new(key, AES.MODE_CBC, iv=iv)



    # Decrypt the data

    decrypted = cipher.decrypt(e)



    # Unpad the decrypted data

    unpadded = unpad(decrypted, AES.block_size)



    # Convert to string

    return unpadded.decode('utf-8')