C#简单的异或加密可逆加密算法

C#代码

namespace Devgg.Common
{
    using System;

    public class EncryptString
    {
        private const Char XOR_STRING = ‘天啦’;

        public static String Encrypt(String sourceString)
        {
            Char[] sourceArray = sourceString.ToCharArray();
            System.Text.StringBuilder temp = new System.Text.StringBuilder();
            for (Int32 i = 0; i < sourceArray.Length; i++)
            {
                sourceArray[i] = (Char)(sourceArray[i] ^ XOR_STRING);
                temp.Append(sourceArray[i].ToString());
            }
            return temp.ToString();
        }

        public static String Dencrypt(String ciphertext)
        {
            Char[] ciphertextArray = ciphertext.ToCharArray();
            System.Text.StringBuilder temp = new System.Text.StringBuilder();
            for (Int32 i = 0; i < ciphertextArray.Length; i++)
            {
                ciphertextArray[i] = (Char)(ciphertextArray[i] ^ XOR_STRING);
                temp.Append(ciphertextArray[i].ToString());
            }
            return temp.ToString();
        }
    }
}