Adobe ACROBAT 3D - Selecting digital IDs

Selecting digital IDs
Before you certify, sign, or encrypt a PDF document, you may be prompted to select a
digital ID file. To avoid being prompted repeatedly, you can select a digital ID to use all
the time or until you quit Acrobat. You can determine whether these digital ID files are
used for signing or encrypting PDF documents, or both.
To select a default self-signed digital ID file:
1. Choose Advanced > Security Settings.
2. Select a digital ID on the left.
3. From the Set Default menu, choose whether you want to use the digital ID for signing,
encrypting, or both.
If you choose not to be prompted for the digital ID, the Lock And Pen icon appears
next to the selected digital ID that can be used for signing and encrypting, the Lock
icon
appears for encryption only, and the Pen icon appears for signing only.