.net 安卓IOS跨平台des加解密双向的（能够互相加解密）

时间 2019-11-07

标签 ios 跨平台 des 解密双向能够互相栏目 Android 繁體版

原文原文链接

http://blog.sina.com.cn/s/blog_beda09820102v5fu.htmlhtml

.net 安卓IOS跨平台des加解密双向的（能够互相加解密）算法

#region 跨平台加解密（c# 安卓 IOS）c#

// public static string sKey = "12345678";ide

// /// 函数

// /// 解密ui

// /// 编码

// /// 要解密的以Base64加密

// /// 密钥，且必须为8位url

// /// 已解密的字符串.net

// public static string DesDecrypt(string pToDecrypt)

// {

// //转义特殊字符

// pToDecrypt = pToDecrypt.Replace("-", "+");

// pToDecrypt = pToDecrypt.Replace("_", "/");

// pToDecrypt = pToDecrypt.Replace("~", "=");

// byte[] inputByteArray = Convert.FromBase64String(pToDecrypt);

// using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())

// {

// des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);

// des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);

// System.IO.MemoryStream ms = new System.IO.MemoryStream();

// using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))

// {

// cs.Write(inputByteArray, 0, inputByteArray.Length);

// cs.FlushFinalBlock();

// cs.Close();

// }

// string str = Encoding.UTF8.GetString(ms.ToArray());

// ms.Close();

// return str;

// }

// ///

// /// 对字符串进行DES加密

// ///

// /// 待加密的字符串

// /// 加密后的BASE64编码的字符串

// public string Encrypt(string sourceString)

//{

// byte[] btKey = Encoding.UTF8.GetBytes(sKey);

// byte[] btIV = Encoding.UTF8.GetBytes(sKey);

// DESCryptoServiceProvider des = new DESCryptoServiceProvider();

// using (MemoryStream ms = new MemoryStream())

// {

// byte[] inData = Encoding.UTF8.GetBytes(sourceString);

// try

// {

// using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(btKey, btIV), CryptoStreamMode.Write))

// {

// cs.Write(inData, 0, inData.Length);

// cs.FlushFinalBlock();

// }

// return Convert.ToBase64String(ms.ToArray());

// }

// catch

// {

// throw;

// }

//}

#endregion

安卓---------------------------------------------------------------------------

// // 加密

//public static String DecryptDoNet(String message, String key)

// throws Exception {

// byte[] bytesrc = Base64.decode(message.getBytes(), Base64.DEFAULT);

// Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

// DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

// SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");

// SecretKey secretKey = keyFactory.generateSecret(desKeySpec);

// IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));

// cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);

// byte[] retByte = cipher.doFinal(bytesrc);

// return new String(retByte);

//}

//// 解密

//public static String EncryptAsDoNet(String message, String key)

// throws Exception {

// Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

// DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

// SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");

// SecretKey secretKey = keyFactory.generateSecret(desKeySpec);

// IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));

// cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);

// byte[] encryptbyte = cipher.doFinal(message.getBytes());

// return new String(Base64.encode(encryptbyte, Base64.DEFAULT));

//}

Ios --------------------------------------------------------------------------------------------------------------------\

static const char* encryptWithKeyAndType(const char *text,CCOperation encryptOperation,char *key) { NSString *textString=[[NSString alloc]initWithCString:text encoding:NSUTF8StringEncoding]; // NSLog(@"[[item.url description] UTF8String=%@",textString); const void *dataIn; size_t dataInLength; if (encryptOperation == kCCDecrypt)//传递过来的是decrypt 解码 { //解码 base64 NSData *decryptData = [GTMBase64 decodeData:[textString dataUsingEncoding:NSUTF8StringEncoding]];//转成utf-8并decode dataInLength = [decryptData length]; dataIn = [decryptData bytes]; } else //encrypt { NSData* encryptData = [textString dataUsingEncoding:NSUTF8StringEncoding]; dataInLength = [encryptData length]; dataIn = (const void *)[encryptData bytes]; } CCCryptorStatus ccStatus; uint8_t *dataOut = NULL; //能够理解位type/typedef 的缩写（有效的维护了代码，好比：一我的用int，一我的用long。最好用typedef来定义） size_t dataOutAvailable = 0; //size_t 是操做符sizeof返回的结果类型 size_t dataOutMoved = 0; dataOutAvailable = (dataInLength + kCCBlockSizeDES) & ~(kCCBlockSizeDES - 1); dataOut = malloc( dataOutAvailable * sizeof(uint8_t)); memset((void *)dataOut, 00, dataOutAvailable);//将已开辟内存空间buffer的首 1 个字节的值设为值 0 //NSString *initIv = @"12345678"; const void *vkey = key; const void *iv = (const void *) key; //[initIv UTF8String]; //CCCrypt函数加密/解密 ccStatus = CCCrypt(encryptOperation,// 加密/解密 kCCAlgorithmDES,// 加密根据哪一个标准（des，3des，aes。。。。） kCCOptionPKCS7Padding,// 选项分组密码算法(des:对每块分组加一次密 3DES：对每块分组加三个不一样的密) vkey, //密钥加密和解密的密钥必须一致 kCCKeySizeDES,// DES 密钥的大小（kCCKeySizeDES=8） iv, // 可选的初始矢量 dataIn, // 数据的存储单元 dataInLength,// 数据的大小 (void *)dataOut,// 用于返回数据 dataOutAvailable, &dataOutMoved); NSString *result = nil; if (encryptOperation == kCCDecrypt)//encryptOperation==1 解码 { //获得解密出来的data数据，改变为utf-8的字符串 result = [[NSString alloc] initWithData:[NSData dataWithBytes:(const void *)dataOut length:(NSUInteger)dataOutMoved] encoding:NSUTF8StringEncoding]; } else //encryptOperation==0 （加密过程当中，把加好密的数据转成base64的） { //编码 base64 NSData *data = [NSData dataWithBytes:(const void *)dataOut length:(NSUInteger)dataOutMoved]; result = [GTMBase64 stringByEncodingData:data]; } return [result UTF8String]; } +(NSString*)encryptWithContent:(NSString*)content type:(CCOperation)type key:(NSString*)aKey { const char * contentChar =[content UTF8String]; char * keyChar =(char*)[aKey UTF8String]; const char *miChar; miChar = encryptWithKeyAndType(contentChar, type, keyChar); return [NSString stringWithCString:miChar encoding:NSUTF8StringEncoding]; }