Use the options in the Security tab to encrypt and protect PDF documents. For example, you can use passwords to protect and restrict the opening, printing, or changing of a document’s contents in a PDF editor. When a protected document is displayed in a PDF editor, the tools and options that would normally be active to modify or change content appear dimmed. In addition to passwords, you can also add a digital signature to a PDF document to prove the authenticity of its origin and sender (i.e., it was not altered in transit).
Consider keeping a backup copy of the PDF, without password-protection in case you lose or forget the password.
The Security tab is available only with the Amyuni PDF Suite.
Click the Security tab.
Select the following options:
Option |
Function |
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Encryption |
To set the encryption level and password protection of a PDF document. To Use: 1. Select the Encryption option. Options and text fields become active. Use the following options:
o A blank password: The user is not prompted for a password to open the document but is restricted to the operations set by its author. o The same password as the owner: In this case the user is prompted for a password and the author of the document will not be able to open this document as an owner to change its security settings. o A password different from the owner: In this case, the user will not be able to open the document unless he/she enters a valid password. When a valid password is entered, the document can be viewed but its usage is restricted to the operations set by its author. 2. In addition, you can select the following protective options:
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To configure a digital signature, see “To Configure a Digital Signature”
Click OK.
Click the Security tab.
Click Configure Digital Signature
The Digital Signature dialog box displays.
Select the following options:
Option |
Function |
---|---|
Attributes |
To associate a digital certificate to a digital signature. To Use: 1. Select the Digital Signature option. The Digital Signature dialog box displays. Use the following options:
Note: “Encrypting File System” certificates cannot be used to sign PDF documents.
|
Position and Size |
To set the page number and page position at which the digital signature will display. |
Visible Items |
Signed by, Reason, Image, Location, Date Signed, Signature Type |
Click OK to close the Digital Signature dialog box.
Click OK.