secure pdf : locked/uneditable to prevent changes after generating from iOS device
I am using UIKit Framework to generate pdf in iOS device. I am wondering if we can lock (provide security) to the generated pdf so that after emailing or downloading it , one can not edit/modify using any pdf editable tool. Yes - this is possible. If you start the creation of a PDF with UIGraphicsBeginPDFContextToFile you can then send a dictionary to it with options to specify what kind of encryption/locking you want. Here is the documentation for it: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIKitFunctionReference/Reference/reference.html And here is an example