[PDFBOX-5182] Detect whether a Signature is out of Date

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Assignee: Unassigned
• Reporter: Ranjeet Kuruvilla
• Created: 30/Apr/21 17:27
• Updated: 05/May/21 18:13
• Resolved: 05/May/21 18:13

Description

Acrobat can detect, if a Signature is invalid. In particular one can see, if a Signature is outdated. That can happen, when a person signs a Document and then changes a Textfield or a Checkbox or any other field.

 

It would be great, if one could detect, whether one could use PDFBox to detect whether a Signature has been invalidated.

 

I attached the sign one can see in Acrobat once a Signature is invalidated

.