DynamicPDF™ Generator for .NET supports 40 and 128 bit encryption. Documents can be locked with a User and Owner password. Document permissions can be set to limit a user's access to the document. 40 bit encryption is compatible with PDF 1.1 or greater. 128 bit encryption is compatible with PDF 1.4 or greater and requires Acrobat 5.0 or greater or a compatible viewer.
Encryption is handled by two security classes. Both classes support user and owner passwords. Leaving the owner and user passwords blank will result in no password prompt, but the specified user permissions will be applied.
The StandardSecurity class uses 40 bit encryption and supports 4 user access permissions:
- Document printing
- Modify the document
- Copying text or graphics from the document
- Updating or adding text annotations or form fields
The HighSecurity class uses 128 bit encryption and supports 4 additional user access permissions:
- Fill in existing form fields
- Extract text and graphics for accessibility programs
- Document assembly
- High Resolution Printing
To secure a document you will initialize a security class and set it to the documents Security property.
[Visual Basic]
' Create a 128 bit encryption security object that prevents text copying.
Dim MySecurity As HighSecurity = New HighSecurity( "owner", "user" )
security.AllowCopy = False
' Add the security object to the document
MyDocument.Security = security
[C#]
// Create a 128 bit encryption security object that prevents text copying.
HighSecurity security = new HighSecurity( "owner", "user" );
security.AllowCopy = false;
// Add the security object to the document
document.Security = security;
| See Also |
Security Class | HighSecurity Class | StandardSecurity Class | Version Features | Programming with Generator for .NET