Adobe 22002486 Digital Signature User Guide - Page 136
Controlling Multimedia
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Acrobat 9 Family of Products Security Feature User Guide External Content and Document Security Interaction with Trust Manager 136 9.1.3 Interaction with Trust Manager Enhanced Security interacts with the Trust Manager so that the most permissive setting takes precedence. For example, if a document is signed with a certificate that's trusted for an action that Enhanced Security would normally prevent, that action will be allowed. 9.1.4 Make Privileged Folder Locations Recursive You can extend privileged locations to be recursive by configuring the registry a reg setting. For details, refer to the Security Administration Guide for Acrobat 9.0 and Adobe Reader 9.0. 9.2 Controlling Multimedia The Acrobat family of products have a notion of trusted documents and other documents (documents that have not been trusted). For the purposes of multimedia playback, every document will exist in one category or the other. For this reason there are two sets of trust options in the Multimedia Trust panel--one for documents that are trusted and one for documents that are not. In order to understand multimedia behavior then, you need to know whether or not a document is trusted so that you can determine which set of options for multimedia playback will be used. There are two ways a document can become trusted: It can be signed with a valid certification signature, and you have trusted the signer's certificate for dynamic content. If your multimedia trust preferences result in a prompt asking whether you want to play multimedia, the Manage Trust for Multimedia Content dialog will offer various options that may allow you to trust the document. Figure 96 Manage Trust for Multimedia Content dialog Once a document is trusted, it is added to the Trusted Document list and will always use the preferences set for trusted documents. You can clear this list by selecting Clear in the Multimedia Trust panel (Figure 98). Caution: Membership on the trusted document list is permanent until the list is manually cleared. Therefore, once a document is on that list, changing the certificate trust level to disallowing dynamic content will have no effect.