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Today, we will learn how to sign a PDF document with a certificate-based digital signature using docHub. Download docHub for free from its original website. To sign with a digital signature, you need a digital ID containing your name, email, issuing organization, serial number, and expiration date. In docHub, digital IDs are used to sign or encrypt documents. Follow these steps: go to the edit menu, choose preferences, select digital IDs, and click add ID. You can also use an existing digital ID file. Fill in your details to create a new digital ID.
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