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Help: Passwords and PermissionsThere are two types of passwords a PDF document can have:
While the user password secures the content of the document from view, the owner password secures what can be done with the content. A document may have both passwords. Setting a User Password
Whenever a password-protected PDF is opened, the user will be asked to enter the password you specified. You can test this by closing and opening your document. Encryption LevelsThe encryption level of a document determines it’s security and which other PDF applications can view it. There are three levels of encryption to choose from.
As of version 6.2.1, PDFpen supports working with files using 256-bit AESr6 encryption created with Adobe Acrobat X and later. PDFpen cannot encrypt new files with this encryption level, but it can open and save files at this level. Users of Preview will not be able to view files at this encryption level. Setting Document Permissions(PDFpenPro only)Set an owner password in a PDF to control the document's permissions. Document permissions settings specify whether certain actions are possible, such as printing or editing. These actions can only be performed by someone with the owner password. Note: Adobe Reader, Preview, and PDFpen do respect document permissions, but not all PDF editing applications do. Document permissions can be helpful in preventing casual PDF users from editing or other restricted activities, but they should not be relied on as foolproof security.
The owner password is now required to set or change these permissions. Test this by closing and opening your document. Permissions Settings Note: We recommend using the presets when possible since certain settings are mutually exclusive.
The level of encryption is noted at the bottom of the window. Permissions EncryptionThe default encryption of document permissions is AES–128. You can change this by adding a user password, details above. The permissions encryption will take on the same encryption level as the user password. |
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