字符串DES解密方法 key已经找到代码 求写一个根据算法自定义生成字符串

浪漫黑客

已经解决 多谢 Avenshy  syrmb

Avenshy

其实很简单，拉出来跑一遍就知道了（笑）

[C#] 纯文本查看 复制代码

using System;
using System.Security.Cryptography;
using System.Text;
using Debiao.WebUtils;
using System.Configuration;
namespace Debiao.WebUtils
{
   class TriDESEncrypt
   {
       private static string sKey = "ENCRYPTBOO";
	   static void Main(string[] args)
       {
            Console.WriteLine(Decrypt("Ub0BrU4gGkrY/Pdz2N1PgPf0hlIO1r7Z87cfndguNSA="));
            Console.ReadKey();
       }
       public static string Encrypt(string original)
       {
           return TriDESEncrypt.Encrypt(original, TriDESEncrypt.sKey);
       }
       public static string Decrypt(string original)
       {
           return TriDESEncrypt.Decrypt(original, TriDESEncrypt.sKey, System.Text.Encoding.Default);
       }
       public static string Decrypt(string original, string key)
       {
           return TriDESEncrypt.Decrypt(original, key, System.Text.Encoding.Default);
       }
       public static string Decrypt(string original, System.Text.Encoding encoding)
       {
           return TriDESEncrypt.Decrypt(original, TriDESEncrypt.sKey, encoding);
       }
       public static string Encrypt(string original, string key)
       {
           string result;
           try
           {
               byte[] bytes = System.Text.Encoding.Default.GetBytes(original);
               byte[] bytes2 = System.Text.Encoding.Default.GetBytes(key);
               result = System.Convert.ToBase64String(TriDESEncrypt.Encrypt(bytes, bytes2));
           }
           catch
           {
               result = "";
           }
           return result;
       }
       public static string Decrypt(string encrypted, string key, System.Text.Encoding encoding)
       {
           string result;
           try
           {
               byte[] encrypted2 = System.Convert.FromBase64String(encrypted);
               byte[] bytes = System.Text.Encoding.Default.GetBytes(key);
               result = encoding.GetString(TriDESEncrypt.Decrypt(encrypted2, bytes));
           }
           catch
           {
               result = "";
           }
           return result;
       }
       public static byte[] MakeMD5(byte[] original)
       {
           System.Security.Cryptography.MD5CryptoServiceProvider mD5CryptoServiceProvider = new System.Security.Cryptography.MD5CryptoServiceProvider();
           return mD5CryptoServiceProvider.ComputeHash(original);
       }
       public static byte[] Encrypt(byte[] original, byte[] key)
       {
           return new System.Security.Cryptography.TripleDESCryptoServiceProvider
           {
               Key = TriDESEncrypt.MakeMD5(key), 
               Mode = System.Security.Cryptography.CipherMode.ECB
           }.CreateEncryptor().TransformFinalBlock(original, 0, original.Length);
       }
       public static byte[] Decrypt(byte[] encrypted, byte[] key)
       {
           return new System.Security.Cryptography.TripleDESCryptoServiceProvider
           {
               Key = TriDESEncrypt.MakeMD5(key), 
               Mode = System.Security.Cryptography.CipherMode.ECB
           }.CreateDecryptor().TransformFinalBlock(encrypted, 0, encrypted.Length);
       }
       public static byte[] Encrypt(byte[] original)
       {
           byte[] bytes = System.Text.Encoding.Default.GetBytes(TriDESEncrypt.sKey);
           return TriDESEncrypt.Encrypt(original, bytes);
       }
       public static byte[] Decrypt(byte[] encrypted)
       {
           byte[] bytes = System.Text.Encoding.Default.GetBytes(TriDESEncrypt.sKey);
           return TriDESEncrypt.Decrypt(encrypted, bytes);
       }
   }
}

运行结果：

版主可别说我违规，我只是解码了这个字符串

解密流程：
1.把原文base64解码转为bytes数组
2.取key的md5作为密钥
3.解密

加密方法也是一样的，倒着来一遍就行了

浪漫黑客

Avenshy 发表于 2020-6-8 18:59
其实很简单，拉出来跑一遍就知道了（笑）[mw_shl_code=csharp,true]using System;
using System.Security. ...

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buhaozhao

浪漫黑客 发表于 2020-6-8 19:57
朋友能加下我的QQ么212697430  我已经采纳了  有事情请教

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