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Posted: 10/09/2006 05:33:00
by Federico Curcio (Basic support level)
Joined: 07/14/2006
Posts: 3

How can I check if a signed PDF document has been modified?

Posted: 10/09/2006 08:25:39
by Ken Ivanov (EldoS Corp.)

First, you should validate the digital signature contained in document (using TElPDFSignature.Validate() method). Then, you should check if the signed block of the document covers the entire document. TElPDFSignature.GetSignedVersion() returns the portion of the document that was actually signed.



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