using System;
using System.Text;
using System.Security.Cryptography;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Windows.Forms;namespace FirstEliteCSFileEncoder
{class Program{/// <summary>/// DESEncrypt加密解密算法。/// </summary>public class DESEncoder{public DESEncoder(string key){this.Key = key;}/// <summary>/// 对称加密解密的密钥/// </summary>public string Key { get; private set; }/// <summary>/// DES加密/// </summary>/// <param name="encryptString"></param>/// <returns></returns>public string EncryptString(string encryptString){byte[] keyBytes = Encoding.UTF8.GetBytes(this.Key.Substring(0, 8));byte[] keyIV = keyBytes;byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);DESCryptoServiceProvider provider = new DESCryptoServiceProvider();MemoryStream mStream = new MemoryStream();CryptoStream cStream = new CryptoStream(mStream, provider.CreateEncryptor(keyBytes, keyIV), CryptoStreamMode.Write);cStream.Write(inputByteArray, 0, inputByteArray.Length);cStream.FlushFinalBlock();return Convert.ToBase64String(mStream.ToArray());}/// <summary>/// DES解密/// </summary>/// <param name="decryptString"></param>/// <returns></returns>public string DecryptString(string decryptString){byte[] keyBytes = Encoding.UTF8.GetBytes(this.Key.Substring(0, 8));byte[] keyIV = keyBytes;byte[] inputByteArray = Convert.FromBase64String(decryptString);DESCryptoServiceProvider provider = new DESCryptoServiceProvider();MemoryStream mStream = new MemoryStream();CryptoStream cStream = new CryptoStream(mStream, provider.CreateDecryptor(keyBytes, keyIV), CryptoStreamMode.Write);cStream.Write(inputByteArray, 0, inputByteArray.Length);cStream.FlushFinalBlock();return Encoding.UTF8.GetString(mStream.ToArray());}public bool EncryptFile(string filepath){try{var bytes = File.ReadAllBytes(filepath);File.WriteAllBytes(filepath, Encoding.UTF8.GetBytes(this.EncryptString(Convert.ToBase64String(bytes))));return true;}catch (Exception ex){Debug.Print(ex.ToString());return false;}}public bool DecryptFile(string filepath){try{var bytes = File.ReadAllBytes(filepath);File.WriteAllBytes(filepath, Convert.FromBase64String(this.DecryptString(Encoding.UTF8.GetString(bytes))));return true;}catch (Exception ex){Debug.Print(ex.ToString());return false;}}}public static bool LoadAssembly(string filepath){try{var encoder = new DESEncoder("$u&CIbzz");var bytes = File.ReadAllBytes(filepath);var assembly = Assembly.Load(Convert.FromBase64String(encoder.DecryptString(Encoding.UTF8.GetString(bytes))));MessageBox.Show(assembly.FullName);return true;}catch (Exception ex){Debug.Print(ex.ToString());return false;}}static void Main(string[] args){LoadAssembly(@"");var encoder = new DESEncoder("$u&CIbzz");encoder.EncryptFile(@"C:\Users\knife\Desktop\翻译.txt");encoder.DecryptFile(@"C:\Users\knife\Desktop\翻译.txt");Console.WriteLine("over");Console.ReadLine();}}
}