I am using iText API for creating PDF on the fly and storing it in a file system.
Also, I am attaching the digital signature to the document. Now whenever the user tries to download that file, I want to append some text in the PDF.
I am using PdfReader to read the document from source and trying to use PdfStamper to add some more content.
But the problem is, the Signature get invalid. Is there any way to achieve this using iText APIs.