Operation Manual

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Electronic signatures
Last updated 4/7/2015
You can change the trust settings of certificates to allow specific actions. For example, you can change the settings to
enable the dynamic content and embedded JavaScript within the certified document.
1 Open the Preferences dialog box.
2 Under Categories, select Signatures.
3 For Identities & Trusted Certificates, click More.
4 Select Trusted Certificates on the left.
5 Select a certificate from the list, and click Edit Trust.
6 In the Trust tab, select any of the following items to trust this certificate:
Use This Certificate As A Trusted Root A root certificate is the originating authority in a chain of certificate
authorities that issued the certificate. By trusting the root certificate, you trust all certificates issued by that
certificate authority.
Signed Documents Or Data Acknowledges the identity of the signer.
Certified Documents Trusts documents in which the author has certified the document with a signature. You trust
the signer for certifying documents, and you accept actions that the certified document takes.
When this option is selected, the following options are available:
Dynamic content
Allows movies, sound, and other dynamic elements to play in a certified document.
Embedded High Privilege JavaScript
Allows privileged JavaScript embedded in PDF files to run. JavaScript files can be used in malicious ways. It is
prudent to select this option only when necessary on certificates you trust.
Privileged System Operations
Allows Internet connections, cross domain scripting, silent printing, external-object references, and import/export
methodology operations on certified documents.
Note: Only allow Embedded High Privilege JavaScript and Privileged System Operations for sources you trust and work
with closely. For example, use these options for your employer or service provider.
7 Click OK, close the Digital ID and Trusted Certificate Settings dialog box, and then click OK in the Preferences
dialog box.
For more information, see the Digital Signature Guide (PDF) at www.adobe.com/go/learn_acr_security_en.
Signatures panel for certificate-based signatures
The Signatures panel displays information about each certificate-based signature in the current document and the
change history of the document since the first certificate-based signature. Each certificate-based signature has an icon
identifying its verification status. Verification details are listed beneath each signature and can be viewed by expanding
the signature. The Signatures panel also provides information about the time the document was signed, and trust and
signer details.