加解密作用和基本思路

在我们编写好一款软件后，我们不想别人盗用我们的软件，这时候我们可以采用注册的方式来保护我们的作品。这时候我们可能就需要简单了解一下加密解密技术，下面是我的简单总结：
第一步：程序获得运行机的唯一标示（比如：网卡号，CPU编号，硬盘号等等）。
第二步：程序将获得的唯一标示加密，然后有用户或者程序将加密后的标示发送给你。
第三步：你将加密后的标示解密（其实这时候你获得的就是：网卡号，CPU编号，硬盘号）然后你再将网卡号，CPU编号，硬盘号加密发送给客户注册。
第四步：程序将你发送的注册号进行解密，解密后的编号其实也是：网卡号，CPU编号，硬盘号。
第五步：每当程序启动，首先解密你发送的注册号，然后读取网卡号，CPU编号，硬盘号等等，最好进行验证，看两个标示是否一样。

获取硬件信息并加密信息

程序获得运行机的唯一标示：硬盘号，CPU信息

//获取硬盘号
private string GetDiskID()
{   
  try
  {
    //获取硬盘ID
    String HDid = "";
    ManagementClass mc = new ManagementClass("Win32_DiskDrive");
    ManagementObjectCollection moc = mc.GetInstances();
    foreach (ManagementObject mo in moc)
    {
      HDid = (string)mo.Properties["Model"].Value;
    }
    moc = null;
    mc = null;
    return HDid;
  }
  catch
  {
    return "";
  }
  finally
  {
  }
}

//获取CPU信息
private string GetCpuInfo()
{
  try
  {
    string cpuInfo = "";//cpu序列号
    ManagementClass cimobject = new ManagementClass("Win32_Processor");
    ManagementObjectCollection moc = cimobject.GetInstances();
    foreach (ManagementObject mo in moc)
    {
      cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
    }
    return cpuInfo;
  }
  catch
  {
    this.senRegeditID.Enabled = false;
    this.GetId.Enabled = true;
  }
  return "";
}

程序将获得的唯一标示加密

//加密
static public string Encrypt(string PlainText)
{
  string KEY_64 = "dafei250";
  string IV_64 = "DAFEI500";
  byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
  byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
  DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
  int i = cryptoProvider.KeySize;
  MemoryStream ms = new MemoryStream();
  CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
  StreamWriter sw = new StreamWriter(cst);
  sw.Write(PlainText);
  sw.Flush();
  cst.FlushFinalBlock();
  sw.Flush();
  return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
}

解密注册信息

//解密
public static string Decrypt(string CypherText)
{
  string KEY_64 = "haeren55"; //必须是8个字符(64Bit)
  string IV_64 = "HAEREN55";  //必须8个字符(64Bit)
  try
  {
    byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
    byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
    byte[] byEnc;
    try
    {
      byEnc = Convert.FromBase64String(CypherText);
    }
    catch
    {
      return null;
    }
    DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
    MemoryStream ms = new MemoryStream(byEnc);
    CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
    StreamReader sr = new StreamReader(cst);
    return sr.ReadToEnd();
  }
  catch { return "无法解密!"; }
}

自己测试代码

#region 加密解密技术
    string Secretkey;
    //获取硬盘号
    private string GetDiskID()
    {
        try
        {
            //获取硬盘ID
            String HDid = "";
            ManagementClass mc = new ManagementClass("Win32_DiskDrive");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                HDid = (string)mo.Properties["Model"].Value;
            }
            moc = null;
            mc = null;
            return HDid;
        }
        catch
        {
            return "";
        }
        finally
        {
        }
    }
    //获取CPU信息
    private string GetCpuInfo()
    {
        try
        {
            string cpuInfo = "";//cpu序列号
            ManagementClass cimobject = new ManagementClass("Win32_Processor");
            ManagementObjectCollection moc = cimobject.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
            }
            return cpuInfo;
        }
        catch
        {
            this.senRegeditID.Enabled = false;
            this.GetId.Enabled = true;
        }
        return "";
    }
    //加密
    static public string Encrypt(string PlainText)
    {
        string KEY_64 = "dafei250";
        string IV_64 = "DAFEI500";
        byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
        byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
        DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
        int i = cryptoProvider.KeySize;
        System.IO.MemoryStream ms = new MemoryStream();
        CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
        StreamWriter sw = new StreamWriter(cst);
        sw.Write(PlainText);
        sw.Flush();
        cst.FlushFinalBlock();
        sw.Flush();
        return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
    }
    //解密
    public static string Decrypt(string CypherText)
    {
        //string KEY_64 = "haeren55"; //必须是8个字符(64Bit)
        //string IV_64 = "HAEREN55";  //必须8个字符(64Bit)
        string KEY_64 = "dafei250"; //加密解密的标头必须一致
        string IV_64 = "DAFEI500";
        try
        {
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(KEY_64);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(IV_64);
            byte[] byEnc;
            try
            {
                byEnc = Convert.FromBase64String(CypherText);
            }
            catch
            {
                return null;
            }
            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            MemoryStream ms = new MemoryStream(byEnc);
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
            StreamReader sr = new StreamReader(cst);
            return sr.ReadToEnd();
        }
        catch { return "无法解密!"; }
    }

    private void GetId_Click(object sender, EventArgs e)
    {
        tBoxID.Text = "";
        Secretkey = GetDiskID() + GetCpuInfo();
        UpdateTextBox(tBoxID, Secretkey);
        Secretkey = Encrypt(Secretkey);
        UpdateTextBox(tBoxID, Secretkey);
        
        //Console.WriteLine();
    }

    private void senRegeditID_Click(object sender, EventArgs e)
    {
        UpdateTextBox(tBoxID, "解密：");
        UpdateTextBox(tBoxID, Decrypt(Secretkey)); 
    }

#endregion

C#加密之一（获取硬件信息base64加解密）