什么是新的“iOS数据保护API”？ [英] What are the new "iOS data protection APIs"?

问题描述

如果您使用Google的「iphone数据保护API」，您会看到根据新闻稿发布的数据。

如果您查看http://support.apple.com/kb/HT4175 ，您可以直接看到Apple做出指示。

这些API在哪里/什么？我在iOS4之前使用了旧的加密API，因此它们不是这些 。
这些API应该为第三方应用程序提供MDM（移动设备管理）类型的功能。

TIA！

NSData 有一些 FileProtection 选项可以设置， code>到磁碟：

• NSDataWritingFileProtectionComplete


• NSDataWritingFileProtectionNone ）

NSFileProtectionKey ，您可以通过 NSFileManager 在磁盘上预先存在的文件上设置：

• NSFileProtectionComplete


• NSFileProtectionNone

应用程式委托还会通知您的应用程式何时不能存取受保护的资料： p>

• -applicationProtectedDataDidBecomeAvailable：


• -applicationProtectedDataWillBecomeUnavailable：

加密和保护数据的所有细节都由硬件和操作系统。它是防火忘记的保护，每当设备锁定时启动。

If you Google "iphone data protection apis" you'll see a zillion hits based on press releases.

If you check out http://support.apple.com/kb/HT4175 you can see Apple making the indication directly.

Where are/what are these APIs? I've used the old crypto APIs before iOS4, so they're not those. These APIs are supposed to give MDM (Mobile Device Management)-type capability for 3rd-party apps.

TIA!

解决方案

There are some FileProtection options you can set when writing an NSData to disk:

• NSDataWritingFileProtectionComplete
• NSDataWritingFileProtectionNone)

as well as an extended attribute, NSFileProtectionKey, you can set on pre-existing files on disk via NSFileManager:

• NSFileProtectionComplete
• NSFileProtectionNone

The app delegate is also informed of when your application is (not) going to be able to access protected data:

• -applicationProtectedDataDidBecomeAvailable:
• -applicationProtectedDataWillBecomeUnavailable:

All the gory details of encrypting and securing the data are handled by the hardware and OS on your behalf. It's fire-and-forget protection that kicks in whenever the device locks.

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