/// <summary>
/// 0 indicate expired, -1 indicate regist version
/// </summary>
/// <param name="licenseFile"></param>
/// <returns></returns>
internal static DateInfo GetLeftDay(string licenseFile)
{
// Get the XML content from the embedded XML public key.
Stream s = null;
string xmlkey = xmlKey;
DateInfo dateInfo = new DateInfo();
dateInfo.leftDays = 0;
// Create an RSA crypto service provider from the embedded
// XML document resource (the public key).
CspParameters parms = new CspParameters(1); // PROV_RSA_FULL
parms.Flags = CspProviderFlags.UseMachineKeyStore; // Use Machine store
foreach (var key in GetKeys(1))
{
parms.KeyContainerName = key;
}
parms.KeyNumber = 2; // AT_SIGNATURE
RSACryptoServiceProvider csp = new RSACryptoServiceProvider(parms);
// Load the signed XML license file.
XmlDocument xmldoc = new XmlDocument();
Assembly entryAssembly = Assembly.GetEntryAssembly();
if (entryAssembly == null)
{
return(dateInfo);
}
FileStream licenseStream = File.Open(licenseFile, FileMode.Open);
if (licenseStream == null)
{
return(dateInfo);
}
byte[] licenseData = new byte[licenseStream.Length];
licenseStream.Read(licenseData, 0, licenseData.Length);
string encryptString = Encoding.ASCII.GetString(licenseData);
foreach (var key in GetKeys(0))
{
foreach (var key1 in DecryptDES(encryptString, key))
{
encryptString = key1;
}
}
StringReader sr = new StringReader(encryptString);
xmldoc.Load(sr);
licenseStream.Close();
// Create the signed XML object.
SignedXml sxml = new SignedXml(xmldoc);
try
{
// Get the XML Signature node and load it into the signed XML object.
XmlNode dsig = xmldoc.GetElementsByTagName("Signature",
SignedXml.XmlDsigNamespaceUrl)[0];
sxml.LoadXml((XmlElement)dsig);
}
catch
{
Console.Error.WriteLine("Error: no signature found.");
return(dateInfo);
}
// Verify the signature.
if (sxml.CheckSignature(csp))
{
XmlNode cpuNode = xmldoc.GetElementsByTagName("CPUID")[0];
string currentCPUInfo = string.Empty;
foreach (var key in GetKeys(2))
{
foreach (var key1 in EncryptDES(Hardware.GetCpuID(), key))
{
currentCPUInfo = key1;
}
}
foreach (string value in getMd5(currentCPUInfo))
{
if (cpuNode.InnerText == value.Trim())
{
dateInfo.leftDays = -1;
return(dateInfo);
}
}
}
XmlNode trialDaysNode = xmldoc.GetElementsByTagName("TrialDays")[0];
XmlNode startDateNode = xmldoc.GetElementsByTagName("StartDate")[0];
dateInfo.startDate = Convert.ToDateTime(startDateNode.InnerText);
dateInfo.leftDays = Convert.ToInt32(trialDaysNode.InnerText);
return(dateInfo);
}
internal static void ModifyLeftDay(string licenseFile, DateTime?startDate, int leftDay)
{
// Get the XML content from the embedded XML public key.
Stream s = null;
string xmlkey = xmlKey;
DateInfo dateInfo = new DateInfo();
dateInfo.leftDays = 0;
try
{
// Create an RSA crypto service provider from the embedded
// XML document resource (the public key).
CspParameters parms = new CspParameters(1); // PROV_RSA_FULL
parms.Flags = CspProviderFlags.UseMachineKeyStore; // Use Machine store
foreach (var key in GetKeys(1))
{
parms.KeyContainerName = key;
}
parms.KeyNumber = 2; // AT_SIGNATURE
RSACryptoServiceProvider csp = new RSACryptoServiceProvider(parms);
// Load the signed XML license file.
XmlDocument xmldoc = new XmlDocument();
Assembly entryAssembly = Assembly.GetEntryAssembly();
if (entryAssembly == null)
{
return;
}
FileStream licenseStream = File.Open(licenseFile, FileMode.Open);
if (licenseStream == null)
{
return;
}
byte[] licenseData = new byte[licenseStream.Length];
licenseStream.Read(licenseData, 0, licenseData.Length);
string encryptString = Encoding.ASCII.GetString(licenseData);
foreach (var key in GetKeys(0))
{
foreach (var key1 in DecryptDES(encryptString, key))
{
encryptString = key1;
}
}
StringReader sr = new StringReader(encryptString);
xmldoc.Load(sr);
licenseStream.Close();
// Create the signed XML object.
SignedXml sxml = new SignedXml(xmldoc);
try
{
// Get the XML Signature node and load it into the signed XML object.
XmlNode dsig = xmldoc.GetElementsByTagName("Signature",
SignedXml.XmlDsigNamespaceUrl)[0];
sxml.LoadXml((XmlElement)dsig);
}
catch
{
Console.Error.WriteLine("Error: no signature found.");
return;
}
XmlNode trialDaysNode = xmldoc.GetElementsByTagName("TrialDays")[0];
XmlNode startDateNode = xmldoc.GetElementsByTagName("StartDate")[0];
trialDaysNode.InnerText = leftDay.ToString();
if (startDate != null)
{
startDateNode.InnerText = startDate.Value.Date.ToString();
}
MemoryStream ms = new MemoryStream();
xmldoc.Save(ms);
string encryptResult = string.Empty;
foreach (var key in GetKeys(2))
{
foreach (var key1 in EncryptDES(Encoding.UTF8.GetString(ms.GetBuffer()), key))
{
encryptResult = key1;
}
}
File.WriteAllText(licenseFile, encryptResult);
ms.Close();
}
catch (System.Exception ex)
{
}
}
internal static DateInfo FindFirstRunTime()
{
string encryptTime = string.Empty;
DateInfo info = new DateInfo();
try
{
// LicenseTable licenseTable = new LicenseTable();
// encryptTime = licenseTable.GetDateInfo();
if (!string.IsNullOrEmpty(encryptTime))
{
string confuseString = string.Empty;
foreach (var key in GetKeys(0))
{
foreach (var key1 in DecryptDES(encryptTime, key))
{
confuseString = key1;
}
}
string data1 = confuseString.Substring(0, 32);
string timeString = confuseString.Remove(0, 32);
string data2 = timeString.Substring(4, 32);
timeString = timeString.Remove(4, 32);
string data3 = timeString.Substring(6, 32);
timeString = timeString.Remove(6, 32);
timeString = timeString.Remove(12, 32);
info.startDate = DateTime.Parse(timeString);
info.leftDays = Convert.ToInt32(GetString(data1));
info.maxDays = Convert.ToInt32(GetString(data2));
info.version = GetString(data3);
}
else
{
DateTime currentTime = TimeHelper.DataStandardTime();
string timeString = currentTime.ToString();
string confuseString = timeString;
Version version = Assembly.GetExecutingAssembly().GetName().Version;
string versionStr = string.Format("{0}{1}{2}", version.Major.ToString("00"),
version.Minor.ToString("00"), version.Build.ToString("0000"));
confuseString = confuseString.Insert(0, GenerateString("030")); // left days
confuseString = confuseString.Insert(4 + 32, GenerateString("030")); // total trial days
confuseString = confuseString.Insert(6 + 32 + 32, GenerateString(versionStr));
confuseString = confuseString.Insert(12 + 32 + 32 + 32, Guid.NewGuid().ToString("N"));
info.startDate = currentTime;
info.leftDays = 30;
info.maxDays = 30;
info.version = versionStr;
foreach (string key in GetKeys(3))
{
foreach (string value in EncryptDES(Hardware.GetCpuID(), key))
{
info.hardwareId = value;
}
}
foreach (var key in GetKeys(0))
{
// foreach (var value in EncryptDES(confuseString, key))
// licenseTable.SetDataInfo(value);
}
}
}
catch (Exception ex)
{
// LogEx.Log(ex);
}
return(info);
}
