给大家一个新的加密方法，C#的。（国外的，只用于学习，支持中文）

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2005-3-14文/佚名

using System;

/* The reason that i am using interface is that, in several
* weeks i will use a bitwise operator for have encryption and decryption
* */
public interface IBindesh
{
    string encode(string str);
    string decode(string str);
}

namespace EncryptionDecryption
{
    /// <summary>
    /// Summary description for EncryptionDecryption.
    /// </summary>
    public class EncryptionDecryption : IBindesh
    {
        public string encode(string str)
        {
            string htext = ""; // blank text

            for ( int i = 0; i < str.Length; i++)
            {
                htext = htext + (char) (str[i] + 10 - 1 * 2);
            }
            return htext;
        }

        public string decode(string str)
        {
            string dtext = "";

            for ( int i=0; i < str.Length; i++)
            {
                dtext = dtext + (char) (str[i] - 10 + 1*2);
            }
            return dtext;
        }
    }
}