}//end
private static LicenseObj DesSerializationObj1(string str)
{
NetDataContractSerializer net = new NetDataContractSerializer();
System.IO.MemoryStream s = new MemoryStream();
byte[] bs = Convert.FromBase64String(str);
s.Write(bs, 0, bs.Length);
s.Position = 0;
LicenseObj list = (LicenseObj)net.Deserialize(s);
s.Close();
return(list);
}
private static License GetLicenseFromString(string licenseFile)
{
License obj = new License();
try
{
string publickey = "<RSAKeyValue><Modulus>usDbA+n8n/lwRraXvdSiSO8lThz+0m0cn+1ESndCmLk8tp+XKklCN1s2i1Q5ytHYVXHcMnAVPAwDux2XQmhcCUZn1+usxpLUo/yL4IoABYHjPXtdCCDXxV5aHLqmo+5+FSe+l8jgDIPKDaCPzBhAt51JZZSJ9qnZUZP+pIDXbn0=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";//公钥
//公钥验证
FileStream aFile = new FileStream(licenseFile, FileMode.Open, FileAccess.Read);
StreamReader read = new StreamReader(aFile);
string objString = read.ReadLine();
read.Close();
LicenseObj _LicenseObj = DesSerializationObj1(objString);
//获取本机cpu disk
//byte[] messagebytes = Encoding.UTF8.GetBytes(GetCpuID() + GetHardDiskID());
StringBuilder str = new StringBuilder(GetCpuID() + GetHardDiskID1());
for (int i = 0; i < str.Length; i++)
{
str[i] = Convert.ToChar(Convert.ToInt32(str[i]) % 7 + Convert.ToInt32(str[i]));
}
byte[] messagebytes = Encoding.UTF8.GetBytes(str.ToString());
RSACryptoServiceProvider oRSA4 = new RSACryptoServiceProvider();
oRSA4.FromXmlString(publickey);
bool bVerify = oRSA4.VerifyData(messagebytes, "SHA1", _LicenseObj.Message);
if (!bVerify)
{
throw new LicenseException("未知的授权信息,请联系中联重科!");
}
if (bVerify && _LicenseObj.type == 2)
{
if (string.IsNullOrEmpty(_LicenseObj.DateStart) || string.IsNullOrEmpty(_LicenseObj.DateEnd))
{
throw new LicenseException("没有找到程序授权时间信息,请联系中联重科!");
}
//验证时间
DateTime DateStart = Convert.ToDateTime(_LicenseObj.DateStart);
DateTime DateEnd = Convert.ToDateTime(_LicenseObj.DateEnd);
if (DateTime.Now < DateStart || DateTime.Now > DateEnd)
{
throw new LicenseException("不在授权期内,请联系中联重科!");
}
}
obj.Verify = bVerify;
obj.DateStart = _LicenseObj.DateStart;
obj.DateEnd = _LicenseObj.DateEnd;
obj.type = _LicenseObj.type;
obj.Version = _LicenseObj.Version;
return(obj);
}
catch (Exception e)
{
if (e is LicenseException)
{
throw e;
}
else
{
throw new LicenseException("授权出现未知错误！错误信息：" + e.Message);
}
}
}