The license signature and data does not match.

[dhineshmuthuvel]

Followed the steps mentioned in the readme, however getting the error in the validationfailures.ToList(). Any Idea on this ?

The license signature and data does not match. This usually happens when a license file is corrupted or has been altered.

public static bool ValidateLicense(string publicKey)
        {
            var readAllLines = File.ReadAllText(@"D:\Work Items\KiteConnect\LicensingPOC\LicensingPOC\License.lic");
            var license = License.Load(readAllLines);

            var validationFailures = license.Validate()
                .ExpirationDate()
                .When(lic => lic.Type == LicenseType.Trial)
                .And()
                .Signature(publicKey).AssertValidLicense();

            List<IValidationFailure> failures = validationFailures.ToList();

            return !failures.Any();
        }

[ZiTsi]

Are you using the
File.WriteAllText("License.lic", license.ToString(), Encoding.UTF8);
way to save the license to a file?

If so try the second one, ie:
using (var xmlWriter = System.Xml.XmlWriter.Create(filePath)) { license.Save(xmlWriter); }

[ChristophBachmann]

I had the same issue. Your solution (using seconde one with xmlWriter) resolved the issue.

[valimaties]

Mine does not work at all.
Neither the first, neither the second solution, both of them generates "Data at the root level is invalid: Line 1, position 1."

[leonkosak]

Offtopic question. Is this project still maintained?

[valimaties]

Offtopic question. Is this project still maintained?

I don't think so @leonkosak

[skst]

Yes, it was just upgraded to .NET 8.

[pjsgsy]

I just wanted to say thanks. I was suffering from the same issue. After 60 minutes of head-scratching, I found this. The solution works for me. For some reason, if you echo the XML and manually save that as a file, validation fails. Writing the file with the call produces a file that validates. Happy days :) Thanks for a great little library!