Python AES CBC 加密解密

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最新推荐文章于 2025-04-19 09:39:06 发布

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Python AES CBC 加密解密

import base64
import cv2
import numpy as np
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad
import json

def cv2bytes(im):
    '''cv2转二进制图片
    :param im: cv2图像，numpy.ndarray
    :return: 二进制图片数据，bytes
    '''
    return np.array(cv2.imencode('.png', im)[1]).tobytes()

class AESUtilECB:
    def __init__(self, key):
        self.pad_length = AES.block_size
        self.key = key

    def encryt(self, data):
        """
        :param data: 二进制图片数据
        :return: 经过aes加密和base64编码后的图像数据
        """
        data = data.encode('utf-8')
        cipher = AES.new(self.key.encode('utf-8'), AES.MODE_ECB,)
        data = pad(data, 16, style='pkcs7')
        # data = data.encode('utf-8')
        msg = cipher.encrypt(data)
        msg = base64.b64encode(msg)
        msg = msg.decode('utf-8')
        return msg

    def decrypt(self, enStr):
        cipher = AES.new(self.key.encode('utf-8'), AES.MODE_ECB, )
        decryptByts = base64.b64decode(enStr)
        msg = cipher.decrypt(decryptByts)
        msg = msg.strip(b'\x0f')
        return msg.decode('utf-8')

class AESUtilCBC:
    def __init__(self, key, iv):
        self.pad_length = AES.block_size
        self.key = key
        self.iv = iv

    def encryt(self, data):
        """
        :param data: 二进制图片数据
        :return: 经过aes加密和base64编码后的图像数据
        """
        data = data.encode('utf-8')
        cipher = AES.new(self.key.encode('utf-8'), AES.MODE_CBC, self.iv.encode('utf-8'))
        data = pad(data, 16, style='pkcs7')
        # data = data.encode('utf-8')
        msg = cipher.encrypt(data)
        msg = base64.b64encode(msg)
        msg = msg.decode('utf-8')
        return msg

    def decrypt(self, enStr):
        cipher = AES.new(self.key.encode('utf-8'), AES.MODE_CBC, self.iv.encode('utf-8') )
        decryptByts = base64.b64decode(enStr)
        msg = cipher.decrypt(decryptByts)
        msg = msg.strip(b'\x0f')
        return msg.decode('utf-8')

if __name__ == "__main__":
    text = "{\"token\":\"0e84b297-d8f2-4779-b7f1-60966ed19ce1\"}"
    # text = json.dumps({"token":"0e84b297-d8f2-4779-b7f1-60966ed19ce1"})
    key = "DigiDigiDigiDigi"
    iv = "1234567887654321"
    aes = AESUtilCBC(key,iv)
    encrypt_res = aes.encryt(text)
    print(encrypt_res)
    decrypt_res = aes.decrypt(encrypt_res)
    print(decrypt_res)

输出结果

text {"token":"0e84b297-d8f2-4779-b7f1-60966ed19ce1"}
encrypt_res NVyP1JRriAErG7oHVNAAvSHcaUl/DnBLpHaWRSTX+ou8edvMnzF6aMiQyLukPbFUAAsXSR3EMo068sOYJMVnZw==
decrypt_res {"token":"0e84b297-d8f2-4779-b7f1-60966ed19ce1"}