[PDFBOX-3821] Newly added MDP functionality breaks PDFs <1.5

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.5, 2.0.6
• Fix Version/s: 2.0.7, 3.0.0 PDFBox
• Component/s: Signing
• Assignee: Tilman Hausherr
• Reporter: Lonzak
• Created: 08/Jun/17 16:13
• Updated: 21/Jul/17 04:40
• Resolved: 14/Jun/17 14:58

Description

Changes introduced in PDFBOX-3017, PDFBOX-3699 broke the signing functionality.
A perfectly valid PDF (in 2.0.4) doesn't pass the acrobat preflight test now:

"Incorrect value type for this key" and "general file format error"
"The required key /TransformMethod is missing" and "An unexpected value is associated with the key."

More details see the attached screenshot. I executed the "CreateVisibleSignature.java" code. And if the lines are commented the error is gone.