iPhone - pdf加密 [英] iPhone - pdf encryption

问题描述

我今天大部分时间都在搜索互联网，试图找到这个问题的答案。基本上，我正在尝试创建一个小应用程序，它接收pdf（来自iTunes文件资源管理器和网址），然后加密它们并保存它们以便以后解密。

I've been searching the internet for most of the day today trying to find an answer to this problem. Bascially, I'm trying to create a small app which receives pdfs (from the iTunes file explorer and from a url) then encrypts them and saves them for decryption later.

我尝试过使用Quartz但是没有很多可用的文档，很难。我只是在寻找一些如何处理这个问题的指导。非常感谢任何帮助。

I've tried using Quartz but with not a lot of documentation available, its difficult. I'm just looking for some guidance on how i should approach this. Any help is much appreciated.

谢谢

推荐答案

我认为它出。我使用这个： http：//iphonedevelopment.blogspot .com / 2009/02 / strong-encryption-for-cocoa-cocoa-touch.html

I figured it out. Im using this: http://iphonedevelopment.blogspot.com/2009/02/strong-encryption-for-cocoa-cocoa-touch.html

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