public static bool VerifyLicenseKeyTextFallback(this string licenseKeyText, out LicenseKey key)
{
System.Security.Cryptography.RSAParameters publicKeyParams;
try
{
var publicRsaProvider = new System.Security.Cryptography.RSACryptoServiceProvider();
publicRsaProvider.FromXml(LicenseUtils.LicensePublicKey);
publicKeyParams = publicRsaProvider.ExportParameters(false);
}
catch (Exception ex)
{
throw new Exception("Could not import LicensePublicKey", ex);
}
try
{
key = licenseKeyText.ToLicenseKeyFallback();
}
catch (Exception ex)
{
throw new Exception("Could not deserialize LicenseKeyText Manually", ex);
}
byte[] originalData;
byte[] signedData;
try
{
originalData = key.GetHashKeyToSign().ToUtf8Bytes();
}
catch (Exception ex)
{
throw new Exception("Could not convert HashKey to UTF-8", ex);
}
try
{
signedData = Convert.FromBase64String(key.Hash);
}
catch (Exception ex)
{
throw new Exception("Could not convert key.Hash from Base64", ex);
}
try
{
return(VerifySignedHash(originalData, signedData, publicKeyParams));
}
catch (Exception ex)
{
throw new Exception($"Could not Verify License Key ({originalData.Length}, {signedData.Length})", ex);
}
}
public static bool VerifyLicenseKeyText(this string licenseKeyText, out LicenseKey key)
{
var publicRsaProvider = new System.Security.Cryptography.RSACryptoServiceProvider();
publicRsaProvider.FromXml(LicenseUtils.LicensePublicKey);
var publicKeyParams = publicRsaProvider.ExportParameters(false);
key = licenseKeyText.ToLicenseKey();
var originalData = key.GetHashKeyToSign().ToUtf8Bytes();
var signedData = Convert.FromBase64String(key.Hash);
return(VerifySignedHash(originalData, signedData, publicKeyParams));
}
