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Michael Klink commented on PDFBOX-4995: --------------------------------------- Oops, sorry, I hadn't realized that there already was an issue here. > Multiple PDF signatures with image > ---------------------------------- > > Key: PDFBOX-4995 > URL: https://issues.apache.org/jira/browse/PDFBOX-4995 > Project: PDFBox > Issue Type: Bug > Affects Versions: 2.0.20 > Reporter: Daniel Gorelic > Priority: Critical > Attachments: signed.pdf > > > A second PDF signature with an image invalidates the first one. If there is > no image, the first signature remains valid. > This is what DSS team member wrote: > Indeed this appears to be a PDFBox bug: One indirect object from the original > document revision is completely unnecessarily overwritten in each signed > revision with an object with the identical content. In spite of this not > actually changing the page content, Adobe Reader apparently considers this > suspicious enough to claim a document change and signature invalidation. > The object in question is the object 54 0 which is a color space resource for > each of the three document pages: > {code:java} > 54 0 obj > /DeviceGray > endobj {code} -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org For additional commands, e-mail: dev-h...@pdfbox.apache.org