private bool IsValidLicense(string license)
{
try
{
logger.LogDebug("Start IsValidLicense");
XDocument licenseDoc = XDocument.Load(new StringReader(license));
string grantlist = licenseDoc.Descendants("grantlist").FirstOrDefault().ToString(SaveOptions.DisableFormatting);
string productKey = licenseDoc.Descendants("productkey").FirstOrDefault().Value;
logger.LogDebug("productKey = " + productKey);
byte[] contentToVerified = UTF8Encoding.UTF8.GetBytes(grantlist);
string publicKey = configuration["SiteSettings:Security:PublicKey"];
logger.LogDebug("publicKey = " + publicKey);
bool isValid = cryptoGraphysvc.VerifySignedHash(contentToVerified,
Convert.FromBase64String(productKey),
publicKey);
logger.LogWarning(string.Format("Product Key is Valid ? {0}", isValid));
logger.LogDebug("End IsValidLicense");
return(isValid);
}
catch (Exception ex)
{
logger.LogError(ex, "Critical Error in IsValidLicense");
}
return(false);
}
