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Software components for data protection, secure storage and transfer

PDF Signatures

Also by EldoS: BizCrypto
Components for BizTalk® and SQL Server® Integration Services that let you securely store and transfer information in your business automation solutions.
#1384
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?

cheers
#1386
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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