desc.cs

来自「很好的一种解密算法,据说没有人成功过,但是我成功了」· CS 代码 · 共 50 行

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Text;
using System.Globalization;
using System.Security.Cryptography;

public class Desc
{
    // 创建Key
    public string GenerateKey()
    {
        DESCryptoServiceProvider desCrypto = (DESCryptoServiceProvider)DESCryptoServiceProvider.Create();
        return ASCIIEncoding.ASCII.GetString(desCrypto.Key);
    }
    // 加密字符串
    public string EncryptString(string sInputString, string sKey)
    {
        byte[] data = Encoding.UTF8.GetBytes(sInputString);
        DESCryptoServiceProvider DES = new DESCryptoServiceProvider();
        DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
        DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
        ICryptoTransform desencrypt = DES.CreateEncryptor();
        byte[] result = desencrypt.TransformFinalBlock(data, 0, data.Length);
        return BitConverter.ToString(result);
    }
    // 解密字符串
    public string DecryptString(string sInputString, string sKey)
    {
        string[] sInput = sInputString.Split("-".ToCharArray());
        byte[] data = new byte[sInput.Length];
        for (int i = 0; i < sInput.Length; i++)
        {
            data[i] = byte.Parse(sInput[i], NumberStyles.HexNumber);
        }
        DESCryptoServiceProvider DES = new DESCryptoServiceProvider();
        DES.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
        DES.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
        ICryptoTransform desencrypt = DES.CreateDecryptor();
        byte[] result = desencrypt.TransformFinalBlock(data, 0, data.Length);
        return Encoding.UTF8.GetString(result);
    }
}