RC2是由著名密码学家Ron Rivest设计的一种传统对称分组加密算法，它可作为DES算法的建议替代算法。它的输入和输出都是64比特。密钥的长度是从8字节到128字节可变，但目前的实现是8字节（１９９８年）。 此算法被设计为可容易地在16位的微处理器上实现。在一个IBM AT机上，RC2加密算法的执行可比DES算法快两倍（假设进行密钥扩展）。在C#中用RC2CryptoServiceProvider可以实现此算法。
算法原理：
1.根据计算机cpu序列号 ，硬盘ID，网卡硬件地址 号生成注册码：
//获取机器码
public static string getMachineCode()
{
string machineCode = "";
MD5CryptoServiceProvider provider1;
byte[] array1;
string text1;
string text2;
byte num1;
byte[] array2;
int num2;
provider1 = new MD5CryptoServiceProvider();
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();
}
//获取硬盘ID
string HDid = "";
ManagementClass cimobjectHDid = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection mocHDid = cimobjectHDid.GetInstances();
foreach (ManagementObject mo in mocHDid)
{
HDid += (string)mo.Properties["Model"].Value;
}
//获取网卡硬件地址
string strMac = "";
ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection mocMac = mc.GetInstances();
foreach (ManagementObject mo in mocMac)
{
if ((bool)mo["IPEnabled"] == true)
strMac += mo["MacAddress"].ToString();
mo.Dispose();
}
array1 = provider1.ComputeHash(Encoding.Default.GetBytes(cpuInfo + strMac));
text1 = "ENTOPYMICROSYSTEMSDEVINIMMUHENDISLIK231456789ACD23456789AEFABGHJKLMNPRSTUVWYZXAHMETALIAKKASHAKANESKICI";
text2 = string.Empty;
array2 = array1;
for (num2 = 0; (num2 < array2.Length); num2 = (num2 + 1))
{
num1 = array2[num2];
text2 = string.Concat(text2, text1.Substring((num1 % text1.Length), 1));
}
machineCode = text2.Substring(0, 10);
return machineCode;
}
2.根据注册码按照RC2生成注册码：
//根据算法得到注册码
public static string getRegisterCode(string machineCode,string _configName)
{
string computeCode = "";
byte[] array1, array2, array3, array4;
MemoryStream stream1 = new MemoryStream();
BinaryFormatter formatter1 = new BinaryFormatter();
formatter1.Serialize(stream1, machineCode);
array1 = stream1.ToArray();
RC2CryptoServiceProvider provider11 = new RC2CryptoServiceProvider();
provider11.KeySize = 128;
#region
byte[] str1 = new byte[8] ;
byte[] str2 = new byte[16] ;
DataTable dt = Xml.GetAllDataFromXml("Config.xml");
if (dt != null && dt.Rows.Count > 0)
{
foreach(DataRow dr in dt.Rows)
{
if (dr[1].ToString() == _configName)
{
str1 = new byte[] { byte.Parse(dr[2].ToString()), byte.Parse(dr[3].ToString()), byte.Parse(dr[4].ToString()), byte.Parse(dr[5].ToString()), byte.Parse(dr[6].ToString()), byte.Parse(dr[7].ToString()), byte.Parse(dr[8].ToString()), byte.Parse(dr[9].ToString()) };
str2 = new byte[] { byte.Parse(dr[10].ToString()), byte.Parse(dr[11].ToString()), byte.Parse(dr[12].ToString()), byte.Parse(dr[13].ToString()), byte.Parse(dr[14].ToString()), byte.Parse(dr[15].ToString()), byte.Parse(dr[16].ToString()), byte.Parse(dr[17].ToString()),
byte.Parse(dr[18].ToString()), byte.Parse(dr[19].ToString()), byte.Parse(dr[20].ToString()), byte.Parse(dr[21].ToString()), byte.Parse(dr[22].ToString()), byte.Parse(dr[23].ToString()),byte.Parse(dr[24].ToString()),byte.Parse(dr[25].ToString())
};
break;
}
}
}
#endregion
array2 =str1 ;
array3 = str2 ;
provider11.IV = array2;
provider11.Key = array2;
ICryptoTransform transform1 = provider11.CreateEncryptor();
stream1 = new MemoryStream();
CryptoStream stream2 = new CryptoStream(stream1, transform1, System.Security.Cryptography.CryptoStreamMode.Write);
try
{
stream2.Write(array1, 0, array1.Length);
stream2.FlushFinalBlock();
array4 = stream1.ToArray();
}
finally
{
stream1.Close();
stream2.Close();
}
stream1 = new MemoryStream();
formatter1.Serialize(stream1, array4);
computeCode = Convert.ToBase64String(stream1.ToArray()).Trim();
return computeCode;
}
3.check
public static bool checkRegisterCode(string machineCode, string registerCode,string configName)
{
string computeCode = getRegisterCode(machineCode, configName);
if (computeCode == registerCode)
{
return true;
}
else
return false;
}
- 1
- 2
前往页