First pdf signature became invalid after signing for second signature

[Suryaprakash Manikandan]

Hi Team,

I have a pdf without a signature field and I want to add multiple invisible signatures to the pdf document. I am successfully able to sign the first signature when I try to sign the second signature my first signature became invalid and the second signature is vaild.

Note: 

1) My pdf doesn't have a signature field and I am not creating a signature field either by code looks like below.

PdfLoadedPage page = loadedDocument.Pages[0] as PdfLoadedPage;

PdfCertificate certificate = new PdfCertificate(pfxMemoryStream, password);

// pdf signed here

PdfSignature pdfSignature = new PdfSignature(loadedDocument, page, certificate, "Signature");

2) I am using syncfusion license in my code. So it is not a license issue. :)

Can you tell me what is the issue here?

Thank you,

Surya

[Gowthamraj Kumar]

Hi Suryaprakash, 

 

Thank you for contacting Syncfusion support. 

 

Kindly please more details about your issue such as complete code snippet, input and output document, invisible signature details, product version to check the issue. So, that it will be helpful for us to analyze and assist you further on this.    

 

Regards, 

Gowthamraj K