AES加解密MODE_CBC和MODE_ECB两种模式的完整实现
import jsonfrom Crypto.Cipher import AES import base64 import binascii# 数据类 class MData():def __init__(self, data=b"", characterSet='utf-8'):# data肯定为bytesself.data = dataself.characterSet = characterSetdef saveData(self, FileName):with open(FileName, 'wb') as f:f.write(self.data)def fromString(self, data):self.data = data.encode(self.characterSet)return self.datadef fromBase64(self, data):self.data = base64.b64decode(data.encode(self.characterSet))return self.datadef fromHexStr(self, data):self.data = binascii.a2b_hex(data)return self.datadef toString(self):return self.data.decode(self.characterSet)def toBase64(self):return base64.b64encode(self.data).decode()def toHexStr(self):return binascii.b2a_hex(self.data).decode()def toBytes(self):return self.datadef __str__(self):try:return self.toString()except Exception:return self.toBase64()# 封装类 class AEScryptor():def __init__(self, key, mode, iv='', paddingMode="NoPadding", characterSet="utf-8"):"""构建一个AES对象:param key: 秘钥，字节型数据:param mode: 使用模式，只提供两种，AES.MODE_CBC, AES.MODE_ECB:param iv： iv偏移量，字节型数据:param paddingMode: 填充模式，默认为NoPadding, 可选NoPadding，ZeroPadding，PKCS5Padding，PKCS7Padding:param characterSet: 字符集编码"""self.key = keyself.mode = modeself.iv = ivself.characterSet = characterSetself.paddingMode = paddingModeself.data = ""def __ZeroPadding(self, data):"""用b’\x00’进行填充，这里的0可不是字符串0，而是字节型数据的b’\x00’:param data::return:"""data += b'\x00'while len(data) % 16 != 0:data += b'\x00'return datadef __StripZeroPadding(self, data):data = data[:-1]while len(data) % 16 != 0:data = data.rstrip(b'\x00')if data[-1] != b"\x00":breakreturn datadef __PKCS5_7Padding(self, data):needSize = 16-len(data) % 16if needSize == 0:needSize = 16return data + needSize.to_bytes(1, 'little')*needSizedef __StripPKCS5_7Padding(self, data):paddingSize = data[-1]return data.rstrip(paddingSize.to_bytes(1, 'little'))def __paddingData(self, data):if self.paddingMode == "NoPadding":if len(data) % 16 == 0:return dataelse:return self.__ZeroPadding(data)elif self.paddingMode == "ZeroPadding":return self.__ZeroPadding(data)elif self.paddingMode == "PKCS5Padding" or self.paddingMode == "PKCS7Padding":return self.__PKCS5_7Padding(data)else:print("不支持Padding")def __stripPaddingData(self, data):if self.paddingMode == "NoPadding":return self.__StripZeroPadding(data)elif self.paddingMode == "ZeroPadding":return self.__StripZeroPadding(data)elif self.paddingMode == "PKCS5Padding" or self.paddingMode == "PKCS7Padding":return self.__StripPKCS5_7Padding(data)else:print("不支持Padding")def setCharacterSet(self, characterSet):"""设置字符集编码:param characterSet: 字符集编码:return:"""self.characterSet = characterSetdef setPaddingMode(self, mode):"""设置填充模式:param mode: 可选NoPadding，ZeroPadding，PKCS5Padding，PKCS7Padding:return:"""self.paddingMode = modedef decryptFromBase64(self, entext):"""从base64编码字符串编码进行AES解密:param entext: 数据类型str:return:"""mData = MData(characterSet=self.characterSet)self.data = mData.fromBase64(entext)return self.__decrypt()def decryptFromHexStr(self, entext):"""从hexstr编码字符串编码进行AES解密:param entext:数据类型str:return:"""mData = MData(characterSet=self.characterSet)self.data = mData.fromHexStr(entext)return self.__decrypt()def decryptFromString(self, entext):"""从字符串进行AES解密:param entext: 数据类型str:return:"""mData = MData(characterSet=self.characterSet)self.data = mData.fromString(entext)return self.__decrypt()def decryptFromBytes(self, entext):"""从二进制进行AES解密:param entext: 数据类型bytes:return:"""self.data = entextreturn self.__decrypt()def encryptFromString(self, data):"""对字符串进行AES加密:param data: 待加密字符串，数据类型为str:return:"""self.data = data.encode(self.characterSet)return self.__encrypt()def __encrypt(self):if self.mode == AES.MODE_CBC:aes = AES.new(self.key, self.mode, self.iv)elif self.mode == AES.MODE_ECB:aes = AES.new(self.key, self.mode)else:print("不支持这种模式") return data = self.__paddingData(self.data)enData = aes.encrypt(data)return MData(enData)def __decrypt(self):if self.mode == AES.MODE_CBC:aes = AES.new(self.key, self.mode, self.iv)elif self.mode == AES.MODE_ECB:aes = AES.new(self.key, self.mode)else:print("不支持这种模式") return data = aes.decrypt(self.data)mData = MData(self.__stripPaddingData(data), characterSet=self.characterSet)return mDataif __name__ == '__main__':# https://blog.csdn.net/chouzhou9701/article/details/122019967key = b"1234567812345678"iv = b"0000000000000000"aes = AEScryptor(key, AES.MODE_CBC, iv, paddingMode="ZeroPadding", characterSet='utf-8')data = '{"name": "张三", "age": "18", "phone": "13212345678"}'enrData = aes.encryptFromString(data)print("密文：", enrData.toBase64())denrData = aes.decryptFromBase64(enrData.toBase64())print("明文：", denrData)print("明文：", type(eval(str(denrData))))
源码地址：https://blog.csdn.net/chouzhou9701/article/details/122019967
