Digital signature validation fails, why?

Aspose.PDF Product Family
1

Hi,

We have aspose.pdf 22.10.

We have a problem validating a digital certificate for which adobe says it is valid. Could you please check it?

Aspose.Pdf.License lic = new Aspose.Pdf.License();
lic.SetLicense(“D:\Temp\temp\Aspose.PDF.NET.lic”);

byte[] _byteArray = File.ReadAllBytes(“D:\Temp\temp\REKONO.pdf”);

Stream stream = new MemoryStream(_byteArray);

Aspose.Pdf.Facades.PdfFileSignature pdfSign3 = new Aspose.Pdf.Facades.PdfFileSignature();
pdfSign3.BindPdf(stream);

bool test1 = pdfSign3.IsCertified;
bool hasSignatures = pdfSign3.ContainsSignature();

var sigNames = pdfSign3.GetSignNames();
foreach (string signame in sigNames)
{
bool valid2 = pdfSign3.VerifySigned(signame);
string name = pdfSign3.GetSignerName(signame);
bool valid = pdfSign3.VerifySignature(signame);
}

Every check VerifySigned, VerifySignature is false, ContainsSignatureis true.

This is document link https://www.dropbox.com/s/bhspet1vqfeb52l/REKONO.pdf?dl=0

Adobe screenshot https://www.dropbox.com/s/6wa1j4853rmai9m/adobesignature.png?dl=0

Thank you,
Regards,
Leon

2

@leon.oven

We have logged this problem in our issue tracking system as PDFNET-53155. You will be notified via this forum thread once this issue is resolved.

We apologize for your inconvenience.

3

Hi,

I am just wondering if you were able to repeat the issue? As this is kind of basic functionality when do you think a problem would be solved? This validation checks are very important to us as our project is closing to end.

Thank you for your help and information,
Regards,
Leon

5

@leon.oven

Currently, your issue is pending for analysis and is in the queue. Once our product team completes the analysis of your issue, we will then be able to provide you an estimate and detail of this issue.

6

HI,

Thank you. I just wanted to kindly ask you if you could in anyway speed up solving this ticket as this issue is very important to us or just provide us with information if this is a problem with your component or are we checking the validity of a document in a wrong way. In case a solution is not provided in a few days, we will have to find another way to overcome this issue. Thank you very much.

Regards,
Leon

7

@leon.oven

The issue has recently been logged and it will be investigated/resolved on a first come first serve basis. However, your concerns have been recorded as well and we will let you know for sure when we have some updates regarding ticket resolution. Please spare us some time.

We apologize for the inconvenience.

8

Hi,

Is there any news regarding this issue? We are waiting for your solution on a daily basis because it is crucial information to ending out project. Please let us know if this is solvable with your component so we can decide how to proceede… Thank you.

Regards,
Leon

9

@leon.oven

The issues in free support model are resolved on first come first serve basis as shared earlier. The resolution time of the issues in this mode is usually high because of the other issues in the queue logged prior. However, your concerns have already been recorded along with the ticket and we will surely inform you once we have some updates. In case the issue is urgent and a showstopper, you can please check our paid support option as well.

We apologize for the inconvenience.

10

The issues you have found earlier (filed as PDFNET-53155) have been fixed in Aspose.PDF for .NET 24.7. This message was posted using Bugs notification tool by asad.ali