申请会员ID：caoxueqiang

发表于 2015-7-11 11:43

1、申请 I D ：caoxueqiang
2、个人邮箱：caoxueqiang@163.com
3、原创技术文章：Android、iOS、windows下通用的des加密解密方法

最近写了一个手机程序需要在Android、iOS、windows三个系统下生成相同的注册码

在网上找了很多代码但测试都没有通过，

最终经过研究对比修改后，于实现了三个平台通用方法。

三平台下截图

代码
java
public class DES
{
   private static byte[] iv = { 1, 2, 3, 4, 5, 6, 7, 8 };

   public static String encryptDES(String encryptString, String encryptKey)
                     throws Exception
   {
            // IvParameterSpec zeroIv = new IvParameterSpec(new byte);
            IvParameterSpec zeroIv = new IvParameterSpec(iv);
            SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES");
            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv);
            byte[] encryptedData = cipher.doFinal(encryptString.getBytes());

            return Base64.encode(encryptedData);
   }

   public static byte[] encryptDESBytes(byte[] encryptBytes, String encryptKey)
                     throws Exception
   {
            // IvParameterSpec zeroIv = new IvParameterSpec(new byte);
            IvParameterSpec zeroIv = new IvParameterSpec(iv);
            SecretKeySpec key = new SecretKeySpec(encryptKey.getBytes(), "DES");
            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv);
            byte[] encryptedData = cipher.doFinal(encryptBytes);

            return encryptedData;
   }

   public static String decryptDES(String decryptString, String decryptKey)
                     throws Exception
   {
            byte[] byteMi = Base64.decode(decryptString);
            IvParameterSpec zeroIv = new IvParameterSpec(iv);
            // IvParameterSpec zeroIv = new IvParameterSpec(new byte);
            SecretKeySpec key = new SecretKeySpec(decryptKey.getBytes(), "DES");
            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, key, zeroIv);
            byte decryptedData[] = cipher.doFinal(byteMi);

            return new String(decryptedData, "UTF-8");
   }

   public static byte[] decryptDESBytes(byte[] decryptBytes, String decryptKey)
                     throws Exception
   {
            IvParameterSpec zeroIv = new IvParameterSpec(iv);
            // IvParameterSpec zeroIv = new IvParameterSpec(new byte);
            SecretKeySpec key = new SecretKeySpec(decryptKey.getBytes(), "DES");
            Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, key, zeroIv);
            byte[] decryptedData = cipher.doFinal(decryptBytes);

            return decryptedData;
   }

   public static String parseByte2HexStr(byte buf[])
   {
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < buf.length; i++)
            {
                     String hex = Integer.toHexString(buf & 0xFF);
                     if (hex.length() == 1)
                     {
                           hex = '0' + hex;
                     }
                     sb.append(hex.toUpperCase());
            }
            return sb.toString();
   }
}
代码
OC
@implementation DES
const Byte iv[] = {1,2,3,4,5,6,7,8};
const int bufferSize = 1024*1024*2; // 1024x10241048576
static unsigned char buffer;

+(NSString *) encryptUseDES:(NSString *)plainText key:(NSString *)key
{
NSString *ciphertext = nil;
NSData *textData = ;
NSUInteger dataLength = ;
//unsigned char buffer; //已经定义为静态变量放到上方，防止占用堆栈过大，程序闪退
memset(buffer, 0, sizeof(char));
size_t numBytesEncrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmDES,
                                       kCCOptionPKCS7Padding,
                                       , kCCKeySizeDES,
                                       iv,
                                       , dataLength,
                                       buffer, bufferSize,
                                       &numBytesEncrypted);
if (cryptStatus == kCCSuccess) {
   NSData *data = ;
   ciphertext = ;
   //ciphertext = ;
}
return ciphertext;
}

+(NSString *)decryptUseDES:(NSString *)cipherText key:(NSString *)key
{
NSString *plaintext = nil;
NSData *cipherdata = ;
//NSData *cipherdata = ;
//unsigned char buffer;//已经定义为静态变量放到上方，防止占用堆栈过大，程序闪退
memset(buffer, 0, sizeof(char));
size_t numBytesDecrypted = 0;
CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmDES,
                                       kCCOptionPKCS7Padding,
                                       , kCCKeySizeDES,
                                       iv,
                                       , ,
                                       buffer, bufferSize,
                                       &numBytesDecrypted);
if(cryptStatus == kCCSuccess) {
   NSData *plaindata = ;
   plaintext = [initWithData:plaindata encoding:NSUTF8StringEncoding];
   NSLog(@"解密完成！");
}
return plaintext;
}

Hmily 发表于 2015-7-11 20:27

【开放注册公告】吾爱破解论坛2015年7月21日暑假开放注册公告
http://www.52pojie.cn/thread-381155-1-1.html

最近开放注册，自己开放注册的时候来注册吧。

bbc123 发表于 2015-7-11 20:35

前排支持。。。。。。。。

Arlenhy 发表于 2015-7-11 20:36

Hmily 发表于 2015-7-11 20:27
最近开放注册，自己开放注册的时候来注册吧。

H大大，这样好吗？人家都把技术文章贴出来了，还让人家在开放的时候注册吗

LaoJII 发表于 2015-7-11 20:39

开放注册时间确实快到了，楼主稍微等等也行。

kelamoyujuzhen 发表于 2015-7-12 07:19

21号开放注册，到时候再来吧

caoxueqiang 发表于 2015-7-21 14:39

顶一下我自己的帖子！

Hmily我爱你 发表于 2015-7-21 20:23

大头狗 发表于 2015-7-22 05:47

有没有简单一点的教程

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申请会员ID：caoxueqiang