To achieve this, digital signatures rely on public-key cryptography. It can also alert the viewer if someone has tried to tamper with the document after it was signed. You can digitally sign a document and confirm that it belongs to you, and anyone who then opens the document will be able to see that you signed it. If a signature is forged, a check can’t be deposited.ĭigital signatures are an enhanced version of a regular signature. For example, consider bank checks, which require physical signatures to confirm ownership.

Traditionally, we use signatures to verify identity. What Are Digital Certificates and Why Are They Important for Digital Signatures?

You’ll also learn about digital certificates, their importance, and how to create your own self-signed digital certificate and then use it to sign a PDF via PSPDFKit.Īfter you’ve done everything outlined in this article, you’ll be able to verify the digital signature in a tool like Adobe Acrobat Reader. You’ll be leveraging PSPDFKit’s JavaScript PDF signature library, along with our JavaScript digital signature PDF guide, to achieve this. In this post, you’ll learn how to insert a digital signature in a PDF using JavaScript.

How to insert signature in pdf