DES64位加密解密

需要引入System.Security.Cryptography命名空间

 private static byte[] DESKey = new byte[] { 11, 23, 93, 102, 72, 41, 18, 12 };
        private static byte[] DESIV = new byte[] { 75, 158, 46, 97, 78, 57, 17, 36 };

 public class DESCryptoServerceOrivuder
    {
        private static void EncrtotData(string inName, string outName, byte[] desKey, byte[] desIV)
        {
            FileStream fin = new FileStream(inName, FileMode.OpenOrCreate, FileAccess.Read);
            FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
            fout.SetLength(0);
            byte[] bin = new byte[100];
            long rdlen = 0;
            long totlen = fin.Length;
            int len;
            DES des = new DESCryptoServiceProvider();
            CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(desKey, desIV), CryptoStreamMode.Write);
            MessageBox.Show("Encrypting....");
            while (rdlen < totlen)
            {
                len = fin.Read(bin, 0, 100);
                encStream.Write(bin, 0, len);
                rdlen = rdlen + len;

            }
            encStream.Close();
            fout.Close();
            fin.Close();

        }
    }

DESCryptoServerceOrivuder类