Once the receivers have opened the file in the PDF software, they can decrypt the signature using the signer's public key, authenticating the signer's identity and verifying the transferred document is not tampered with. Specifically, a digital signature or digital ID backed by a digital signature certificate (DSC) is created with a unique identity and encrypted with a public key. When it comes to how to digitally sign a PDF, adding digital signatures is the key. It offers more security for documents than ordinary electronic signatures. What Is a Digital Signature and How Does It Work ?Ī digital signature is a particular type of electronic signature and is legally binding as a handwritten signature in many countries. This post introduces to you how to digitally sign a PDF on Windows, Mac and other OS in 3 different ways and some knowledge of digital signatures. A digital signature is our unique identity that can be validated to protect the information in the document. Then, do you know how to digitally sign a PDF or add a digital signature to your PDF document?Ĭommonly we electronically sign PDFs by placing our name or the scanned image of the signature on them but digitally signing is more than that. Digital sign decreases your dependency on paper and optimizes the workflow. In the next part, we will learn how to verify software downloads on Linux.Formerly, we used to sign a document with handwritten signatures, but now sign with digital signatures. The decrypt process will automatically verify the signature. It first signs the document with your private key, then encrypts it with the recipient’s public key. It combines the commands to sign and encrypt in one step. You need to enter your passphrase to unlock the private key.
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