Encrypt decrypt (process password)

/* Usage protected void Page_Load (object sender, EventArgs e) {//encrypt this.        Title = Cencrypt.desencrypt ("pwd", Cencrypt.key); This. Title + = Cencrypt.desdecrypt (this.        Title, Cencrypt.key);    Response.Write (Cencrypt.desdecrypt ("gayyhdlqunc=", Cencrypt.key)); } */using system;using system.io;using system.text;using system.security.cryptography;using System.Web;namespace YD. common{//<summary>//Plus password class///</summary> public class Cencrypt {//<summary&gt        ; Encrypt//</summary>//<param name= "inputstring" ></param>//<returns>&lt ;/returns> public static string Desencrypt (string inputstring) {return desencrypt (inputstring        , Key); }//<summary>//Decrypt//</summary>//<param name= "InputString" ></par am>//<returns></returns> public static string Desdecrypt (sTring inputstring) {return desdecrypt (inputstring, Key);            }///<summary>//key//</summary> private static string key {            get {return "Hongye10"; }}///<summary>///encryption string///NOTE: Key must be 8 bit///</summary>//&LT;PA Ram Name= "StrText" > String </param>//<param name= "Encryptkey" > Key </param>//<param NA        Me= "Encryptkey" > returns the encrypted string </param> public static Strings Desencrypt (string inputstring, String encryptkey)            {byte[] Bykey = null;            Byte[] IV = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};                try {bykey = System.Text.Encoding.UTF8.GetBytes (encryptkey.substring (0, 8));                DESCryptoServiceProvider des = new DESCryptoServiceProvider (); byte[] Inputbytearray = Encoding.UTF8.GetBYtes (inputstring);                MemoryStream ms = new MemoryStream (); CryptoStream cs = new CryptoStream (MS, Des.                CreateEncryptor (Bykey, IV), cryptostreammode.write); Cs.                Write (Inputbytearray, 0, inputbytearray.length); Cs.                FlushFinalBlock (); Return convert.tobase64string (Ms.            ToArray ()); } catch (System.Exception error) {//return error.                Message;            return null; }}///<summary>//Decrypt string///</summary>//<param name= "this.inputst Ring > Secret string </param>//<param name= "Decryptkey" > Key </param>///<param name= "decry            Ptkey "> returns decrypted string </param> public static Desdecrypt string (string inputstring, String decryptkey) {            byte[] Bykey = null;            Byte[] IV = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; byte[] Inputbytearray =New Byte[inputstring.length];                try {bykey = System.Text.Encoding.UTF8.GetBytes (decryptkey.substring (0, 8));                DESCryptoServiceProvider des = new DESCryptoServiceProvider ();                Inputbytearray = convert.frombase64string (inputstring);                MemoryStream ms = new MemoryStream (); CryptoStream cs = new CryptoStream (MS, Des.                CreateDecryptor (Bykey, IV), cryptostreammode.write); Cs.                Write (Inputbytearray, 0, inputbytearray.length); Cs.                FlushFinalBlock ();                System.Text.Encoding Encoding = new System.Text.UTF8Encoding (); return encoding. GetString (Ms.            ToArray ()); } catch (System.Exception error) {//return error.                Message;            return null; }        }    }}

Encrypt decrypt (process password)