在iOS中打开和存储加密的文档离线

本文介绍了在iOS中打开和存储加密的文档离线的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我已经下载了加密文件，可以在文件夹中查看离线视图，我想知道：I have encrypted files downloaded and available for offline view in a folder, I would like to know: 如何在相应的读者中打开它们，因为这些是ms office文档和prezi格式how to open them in the appropriate reader as these are ms office docs and prezi format我想他们必须不加密，以便读者可以阅读它们，但在这案例如何确保安全？I suppose they will have to be unencrypted so that reader can read them but in this case how to ensure security?使用哪个文件夹来避免iCloud同步，我已经阅读了这个禁用iCloud同步 which folder to use to avoid iCloud sync, I already read this Disable iCloud sync iOS是否通过基于应用程序键的加密来保护应用程序的文档我读了，还是我错了？Does iOS protects documents of the application by encryption based on app key as I read it or am I wrong?推荐答案发生，Sven是正确的关于 UIDocumentInteractionController ，该对象由URL标识。Speaking extemporaneously, as thoughts occur, Sven is right about UIDocumentInteractionController and that objects are identified by URL.但是， t需要在磁盘上解压缩您的文件才能使其工作。你可以编写自己的小URL协议（子类 NSURLProtocol ，并适当地实施方法;您应该最终检查URL是否在您创建的发明方案内 - 例如 myApplicationEncrypted：// - 然后将数据包发布到 NSURLProtocolClient ），并通过 NSURLProtocol + registerClass 。However, it's possible you don't need to unencrypt your files on disk for this to work. You can probably write your own little URL protocol (subclass NSURLProtocol and implement methods appropriately; you should end up checking that URLs are within the invented scheme you've created — e.g. myApplicationEncrypted:// — then posting data packets to a NSURLProtocolClient) and register it with the device via NSURLProtocol +registerClass.您显然需要在磁盘和协议客户端之间进行解密。所以你会传递未加密的数据 - 你需要对 UIDocumentInteractionController 进行信任判断。You'll obviously need to decrypt between disk and protocol client. So you'll be passing unencrypted data on — you'll need to make a trust judgment on UIDocumentInteractionController.文档交互控制器被记录在您的应用程序中，因此不应该出现沙箱问题。The document interaction controller is documented to work within your app, so there shouldn't be sandbox concerns. 这篇关于在iOS中打开和存储加密的文档离线的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！