求加密 文件夹 的思路或解决方案

Question

如题，注意是文件夹，不是文件。不能利用rar工具。
谢谢！

Answer 1

 #1楼 得分：20回复于：2008-07-22 18:00:31一些简单的加解密
C# code
public static void Encrypt(string pathIn, string pathOut, string password)
        {
            try
            {
                byte[] iv = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
                byte[] key = System.Text.Encoding.UTF8.GetBytes(password);
                System.IO.FileStream fs = new FileStream(pathIn, FileMode.Open, FileAccess.Read);
                System.IO.FileStream outfs = new FileStream(pathOut, FileMode.OpenOrCreate, FileAccess.Write);
                outfs.SetLength(0);
                byte[] myBytes = new byte[100];
                long myInLength = 0;
                long myLength = fs.Length;
                System.Security.Cryptography.DESCryptoServiceProvider dsp = new DESCryptoServiceProvider();
                System.Security.Cryptography.CryptoStream cs = new CryptoStream(outfs, dsp.CreateEncryptor(key, iv), CryptoStreamMode.Write);
                while (myInLength < myLength)
                {
                    int myLen = fs.Read(myBytes, 0, 100);
                    cs.Write(myBytes, 0, myLen);
                    myInLength += myLen;
                }
                cs.Close();
                fs.Close();
                outfs.Close();
            }
            catch (IOException ioex)
            {
                Log.debug("Encrypt(pathIn, pathOut, password): " + ioex.Message + "\r\nSource:" + ioex.Source + "\r\nStackTrace:" + ioex.StackTrace);
            }
        }        public static void Decrypt(string pathIn, string pathOut, string password)
        {
            try
            {
                System.IO.FileStream fs = new FileStream(pathIn, FileMode.Open, FileAccess.Read);
                System.IO.FileStream outfs = new FileStream(pathOut, FileMode.OpenOrCreate, FileAccess.Write);
                outfs.SetLength(0);
                long myLength = fs.Length;
                long myInLength = 0;
                byte[] iv = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
                byte[] key = System.Text.Encoding.UTF8.GetBytes(password);
                System.Security.Cryptography.DESCryptoServiceProvider dsp = new DESCryptoServiceProvider();
                System.Security.Cryptography.CryptoStream cs = new CryptoStream(outfs, dsp.CreateDecryptor(key, iv), CryptoStreamMode.Write);
                byte[] myBytes = new byte[100];
                while (myInLength < myLength)
                {
                    int myLen = fs.Read(myBytes, 0, 100);
                    cs.Write(myBytes, 0, myLen);
                    myInLength += myLen;
                }
                cs.Close();
                fs.Close();
                outfs.Close();
            }
            catch (IOException ioex)
            {
                Log.debug("Dncrypt(pathIn, pathOut, password): " + ioex.Message + "\r\nSource:" + ioex.Source + "\r\nStackTrace:" + ioex.StackTrace);
            }
        }        public static string EncryptBy16MD5(string strProclaimed)
        {
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            string strCryptograph = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(strProclaimed)), 4, 8);
            return strCryptograph;
        }        /// <summary>
        /// md5 32位加密
        /// </summary>
        /// <param name="strProclaimed">明文</param>
        /// <returns>密文</returns>
        public static string EncryptBy32MD5(string strProclaimed)
        {
            MD5 md5 = MD5.Create();
            string strCryptograph = "";
            byte[] bytCode = md5.ComputeHash(Encoding.UTF8.GetBytes(strProclaimed));
            for (int i = 0; i < bytCode.Length; i++)
            {
                // 将得到的字符串使用十六进制类型格式。格式后的字符是小写的字母，如果使用大写（X）则格式后的字符是大写字符 
                strCryptograph = strCryptograph + bytCode[i].ToString("x");
            }
            return strCryptograph;
        }

Answer 2

http://topic.csdn.net/u/20101126/10/f55f645f-cd76-4c3c-8cc7-0196d7bf8d09.html

Answer 3

这个加密文件可以，文件夹不行。。
System.IO.FileStream fs = new FileStream(pathIn, FileMode.Open, FileAccess.Read);
会出异常！