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5 Steps for Validating Digital Signatures In a PDF Open the digitally signed PDF that you need to validate using Power PDF. Locate the digital signature object within the document. Right click or command-click on the signature object. Select "Verify Signature" from the context menu.

Signature validity is determined by checking the authenticity of the signature's digital ID certificate status and document integrity: Authenticity verification confirms that the signer's certificate or its parent certificates exist in the validator's list of trusted identities.

In the signature Properties window click Show Signers Certificate button. Following screen will be displayed once you click on it. Once you click on OK button, following window will be displayed. ... Click Ok button in the following window. ... Once the certificate validation is done, you will get the following approval.

Digital certificates and PKI play a crucial role in electronic signature verification. Digital certificates, issued by trusted certification authorities, contain the signer's public key and other identifying information. They provide a mechanism for verifying the authenticity and integrity of the signature.

The receiver decrypts the digital signature with the public key of the sender, thus regenerating the message digest. The receiver computes a message digest from the message data that was received, and verifies that the two digests are the same. If these digests match, the message is both intact and authentic.

Right-click the EXE or MSI file and select Properties. Click the Digital Signatures tab to check the signature.

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