![]() If the Validity Status claims Singature validity unknown, then you will have to verify the signature by contacting the signer.Click Verify Identity to see if the user has entered contact information. If an official function is assigned to the signature of an authorized agency. You can also view digital signatures in Edge. You may need to contact the signer directly for additional information. Click Properties for more information about the signature. Here you can check electronically signed documents. The invoice PDF documents you receive must be digitally signed to confirm their validity if youre based in India and contract with any of the following. This tutorial shows you how to enable and validate Digital Signature for PDF files in the Microsoft Edge browser. Click the "Verify Identity" to check for contact information and to match signature certificate numbers. ![]() If Power PDF displays "Signature Validity Unknown," you should proceed to verify the integrity of the document with the original signer. Repeat steps 3 and 4 as needed with any other signatures in the document. Power PDF automatically checks the information behind the signature and displays a message saying "Signature Valid" if the document remains in its original form.Select "Verify Signature" from the context menu.Right click or command-click on the signature object. Open the pdf file and Right click on the Question Mark showing the Validity Unknown.Locate the digital signature object within the document.Open the digitally signed PDF that you need to validate using Power PDF.GitHub - DevExpress-Examples/word-document-api-sign-document-and-validate. 5 Steps for Validating Digital Signatures In a PDFĬonfirming that a signature remains valid in a PDF takes only a few steps and doesn't require any special tools other than your Power PDF installation. Use the DocumentSigner class methods to apply and validate digital signatures.
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