![]() The signature is verified when recipients open the document. The certificate is a credential that is automatically applied to the signed document. The private key is used to create the certificate-based signature. The digital ID contains a private key and a certificate with a public key, and more. ![]() To sign a document with a certificate-based signature, you must obtain a digital ID or create a self-signed digital ID in Acrobat or Acrobat Reader. It can be easily verified and informs recipients whether the document was modified after the signer initially signed it. Unlike a handwritten signature, a certificate-based signature is difficult to forge because it contains encrypted information that is unique to the signer. Additional checks in the Preflight toolĪ certificate-based signature, like a conventional handwritten signature, identifies the person signing a document.Analyzing documents with the Preflight tool. ![]() Automating document analysis with droplets or preflight actions.Correcting problem areas with the Preflight tool.Viewing preflight results, objects, and resources.PDF/X-, PDF/A-, and PDF/E-compliant files.Playing video, audio, and multimedia formats in PDFs.Add audio, video, and interactive objects to PDFs.Edit document structure with the Content and Tags panels.Reading PDFs with reflow and accessibility features. ![]()
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