Invalid signature after adding DSS dictionary to signed PDF

[rajathrjoshi]

want to create DSS dictionary for my signed PDF to add OCSPs and Certs into it make the PDF ltv enabled.

But after adding DSS to PDF(with/without OCSPs), acrobat reader give below error.

"Error during signature verification.

Signature contains incorrect, unrecognized, corrupted or suspicious data. Support Information: SigDict /Contents illegal data"

I used pdf-lib library to create DSS dict.

Is below correct way of doing it?

const { PDFDocument, PDFName } = require('pdf-lib');
const addOcspResponsesToDss = async () => {
const pdfDoc = await PDFDocument.load(existingPdfBytes);
let dssDict = pdfDoc.catalog.lookup(PDFName.of('DSS'));
if (!dssDict) {
dssDict = pdfDoc.context.obj({
Type: 'DSS',
V: 1
});
pdfDoc.catalog.set(PDFName.of('DSS'), dssDict);
}

Am I doing something wrong here?