InvalidSignatureValidationFailure: License signature validation error!

[pankajmcait]

While validating the License, following error is coming out:

InvalidSignatureValidationFailure: License signature validation error! - The license signature and data does not match. This usually happens when a license file is corrupted or has been altered.

Using the following code for validation:
string licPath = Server.MapPath("\LicenseFiles\License.lic");
var keypath = Server.MapPath("\LicenseFiles\public-key.txt");
string publicKey = System.IO.File.ReadAllText(keypath, System.Text.Encoding.UTF8);

        StringBuilder sb = new StringBuilder();
        using (XmlReader reader = XmlReader.Create(licPath))
        {

            License readLicence = License.Load(reader);
            var validationFailures = readLicence.Validate()
              .ExpirationDate()
                   .When(lic => lic.Type == LicenseType.Trial)
              .And()
              .Signature(publicKey)
              .AssertValidLicense().ToList();

            foreach (var failure in validationFailures)
                sb.Append(failure.GetType().Name + ": " + failure.Message + " - " + failure.HowToResolve);
        }

Can anybody suggest why is this happening?
@dnauck

[pankajmcait]

Is there any update from anyone?

[qmfrederik]

Do you always get this error or just intermittently? license.Validate()>Signature(publicKey) is not thread safe, and you may get this errors if you have multiple threads entering this code at the same time.

[pankajmcait]

Always there is error!!

[yolita15]

Do not use that

using (XmlReader reader = XmlReader.Create(licPath))

just pass it as a string :

string reader = File.ReadAllText(licPath);
 License readLicence = License.Load(reader);
            var validationFailures = readLicence.Validate()
              .ExpirationDate()
                   .When(lic => lic.Type == LicenseType.Trial)
              .And()
              .Signature(publicKey)
              .AssertValidLicense().ToList();

            foreach (var failure in validationFailures)
                sb.Append(failure.GetType().Name + ": " + failure.Message + " - " + failure.HowToResolve);`

This should work.

[pankajmcait]

okay, i will try this code and let you know...

…

On Wed, Dec 13, 2017 at 7:23 PM, Yoanna ***@***.***> wrote: Do not use that using (XmlReader reader = XmlReader.Create(licPath)) just pass it as a string : `string reader = File.ReadAllText(licPath ); License readLicence = License.Load(reader); var validationFailures = readLicence.Validate() .ExpirationDate() .When(lic => lic.Type == LicenseType.Trial) .And() .Signature(publicKey) .AssertValidLicense().ToList(); foreach (var failure in validationFailures) sb.Append(failure.GetType().Name + ": " + failure.Message + " - " + failure.HowToResolve);` This should work. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#40 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AYt8_GmxuJiJ9pbWRnAE3tOqKOL4hrboks5s_9bcgaJpZM4MG4ea> .

-- *ThanksPankaj Jain+91 9871844292*

[nikro412956]

@pankajmcait well... did it work?