python 實現 AES ECB模式加解密

AES ECB模式加解密
使用cryptopp完成AES的ECB模式進行加解密。

AES加密數據塊分組長度必須爲128比特，密鑰長度能夠是128比特、192比特、256比特中的任意一個。（8比特 == 1字節）

在CBC、CFB、OFB、CTR模式下除了密鑰外，還須要一個初始化向IV。（ECB模式不用IV）

 

代碼：

　　

# -*- coding=utf-8-*-
from Crypto.Cipher import AES import os from Crypto import Random import base64 """ aes加密算法 padding : PKCS7 """

class AESUtil: __BLOCK_SIZE_16 = BLOCK_SIZE_16 = AES.block_size @staticmethod def encryt(str, key, iv): cipher = AES.new(key, AES.MODE_ECB,iv) x = AESUtil.__BLOCK_SIZE_16 - (len(str) % AESUtil.__BLOCK_SIZE_16) if x != 0: str = str + chr(x)*x msg = cipher.encrypt(str) # msg = base64.urlsafe_b64encode(msg).replace('=', '')
        msg = base64.b64encode(msg) return msg @staticmethod def decrypt(enStr, key, iv): cipher = AES.new(key, AES.MODE_ECB, iv) # enStr += (len(enStr) % 4)*"="
        # decryptByts = base64.urlsafe_b64decode(enStr)
        decryptByts = base64.b64decode(enStr) msg = cipher.decrypt(decryptByts) paddingLen = ord(msg[len(msg)-1]) return msg[0:-paddingLen] if __name__ == "__main__": key = "1234567812345678" iv = "1234567812345678" res = AESUtil.encryt("123456", key, iv) print res # mdSm0RmB+xAKrTah3DG31A==
    print AESUtil.decrypt(res, key, iv) # 123456