blocks|key|1835601|text|如果我没记错的话，从iPhone+3GS开始，对于iPhone上的数据，硬件加密是默认开启的，如果你实施了额外的加密--尽管如果你通过AppStore分发/销售，并且你正在实施苹果提供的之外的自定义加密，AppStore的条款要求你获得美国商务部的批准(如果我没记错的话)，因为加密被归类为军需品。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1835602|一个不错的入门文档是http://www.apple.com/iphone/business/it-center/security.html|offset|length|1835603|关于这方面的更多信息可以在(付费)+iPhone注册开发人员网站上找到，由于显而易见的原因，我不能透露，你必须自己发现/阅读。|1835604|希望这些信息有帮助，如果有帮助，请将回复标记为已回答，谢谢。|1835605|entityMap|0|LINK|mutability|MUTABLE|url|http://www.apple.com/iphone/business/it-center/security.html^0|0|A|1O|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

If I recall correctly, starting with iPhone 3GS, hardware encryption is on by default for data on the iPhone, and additional encryption is available if you implement -- though if you are distributing/selling through AppStore, and you're implementing your own custom encryption beyond what Apple provides, the terms of AppStore requires you to get US Dept of Commerce (if my memory is correct) approval because encryption is classified as munition.

A good starting document is <a href="http://www.apple.com/iphone/business/it-center/security.html" rel="nofollow">http://www.apple.com/iphone/business/it-center/security.html</a>

More info on this is available within (paid) iPhone Registered Developer website which for obvious reason, I couldn't reveal, and you'll have to discover/read yourself.

Hope the information helps, and please mark the response as answered if this helps, thanks.

blocks|key|1832295|text|只有在你使用数据保护的情况下才会加密。请参见App+States+and+Multitasking和Protecting+Data+Using+On-Disk+Encryption。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1832296|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/ManagingYourApplicationsFlow/ManagingYourApplicationsFlow.html|1|http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/AdvancedAppTricks/AdvancedAppTricks.html^0|M|R|0|1E|14|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

It's only encrypted if you use data protection. See <a href="http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/ManagingYourApplicationsFlow/ManagingYourApplicationsFlow.html" rel="noreferrer">App States and Multitasking</a>, and <a href="http://developer.apple.com/library/ios/#documentation/iphone/conceptual/iphoneosprogrammingguide/AdvancedAppTricks/AdvancedAppTricks.html" rel="noreferrer">Protecting Data Using On-Disk Encryption</a>.

blocks|key|4633017|text|我的理解是，您必须使用数据保护选项。WWDC+2010年的演讲就是关于这个话题的。详见“会话209+-保护应用程序数据”。这些视频是免费的，信息量很大。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4633018|通过developer.apple.com登录，然后您可以使用页面中的链接访问视频。仅供参考，视频包含了您需要的所有示例代码。|4633019|WWDC+2010+videos+|offset|length|4633020|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/videos/wwdc/2010/^0|0|0|0|H|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

My understanding is that you must use the data protection options. There was a WWDC 2010 talk on exactly this topic. See "Session 209 - Securing Application Data" which goes into detail. These videos are free and highly informative.

Login through developer.apple.com and then you can use the link in the page to get to the videos. FYI, the video contains all the example code you should need.

<a href="http://developer.apple.com/videos/wwdc/2010/" rel="nofollow">WWDC 2010 videos </a>

blocks|key|1832325|text|如果有人越狱您的设备并绕过您的密码，受数据保护API保护的信息将保持加密状态，因此无法访问，因为您的密码-解密密钥的重要部分-是未知的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1832326|只需在设备上设置密码即可自动启用数据保护。|1832327|但是，问题是数据保护功能仅保护专为使用数据保护API而设计的应用程序中的数据。|1832328|就内置应用程序而言，这只是邮件应用程序，而真正利用数据保护功能的第三方应用程序令人惊讶地罕见；|1832329|GoodReader和Box.net被认为是很好的例子，但许多其他文件存储应用程序，如Dropbox，并不提供这种支持，这意味着你的缓存数据并不比你实际拥有的设备更安全。|1832330|这意味着，如果您担心使用安全加密来存储机密数据，则需要仅使用支持数据保护API的第三方应用程序。|1832331|同样重要的是要记住，任何使用iCloud存储的应用程序都不能使用数据保护，因为在设备锁定时，由于需要后台同步iCloud数据，这两个应用程序是互斥的。|offset|length|style|BOLD|1832332|例如，即使是GoodReader也注意到，你选择存储在应用程序的“iCloud”部分的文档将不会受到数据保护加密的保护。|1832333|当然，即使是数据保护也只能像设备上的密码一样安全。使用Apple+Configurator，您可以在设备上配置更复杂密码策略的要求，以帮助提高这方面的安全性，并在指定的失败尝试次数后启用设备的自动擦除。|1832334|有关更多信息，请访问here|1832335|entityMap|0|LINK|mutability|MUTABLE|url|http://www.ilounge.com/index.php/articles/comments/ios-encryption-and-data-protection/#1z6VYpREIyuyxLC2.99^0|0|0|0|0|0|0|E|M|0|0|0|A|4|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|17|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|18|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|19|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|1A|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1B|8|@$N|1C|O|1D|P|Q]]|9|@]|A|$]]|$1|R|3|S|5|6|7|1E|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1F|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1G|8|@]|9|@$N|1H|O|1I|1|1J]]|A|$]]|$1|X|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|Y|$Z|$5|10|11|12|A|$13|14]]]]

if somebody were to jailbreak your device and bypass your passcode, information protected by the Data Protection API would remain encrypted and therefore inaccessible, since your passcode—the important piece of the decryption key, is not known. 

Data Protection is enabled automatically simply by setting a passcode on the device. 

The catch, however, is that the Data Protection feature only secures data in applications that have been specifically designed to use the Data Protection APIs.

In terms of built-in applications, that’s only the Mail app, and third-party apps that actually make use of the Data Protection features are surprisingly rare; 

GoodReader and Box.net come to mind as good examples, but many other file storage apps such as Dropbox do not provide this support, meaning that your cached data is no more secure than your physical possession of the device. 

This means that if you’re concerned about storing confidential data with secure encryption you will need to look to exclusively using third-party apps that support the Data Protection APIs.

It’s also important to keep in mind that any apps that use iCloud storage cannot use Data Protection, as the two are mutually exclusive due to the requirement for background synchronization of iCloud data when the device is locked. 

Even GoodReader, for example, notes that documents you choose to store in the “iCloud” section of the app will not be protected by the Data Protection encryption. 

Of course even Data Protection is only as secure as the passcode on the device. Using the Apple Configurator you can configure requirements for more complex passcode policies on devices to help improve security in this regard, as well as enabling an automatic erase of the device after a specified number of failed attempts.

Read more at 
<a href="http://www.ilounge.com/index.php/articles/comments/ios-encryption-and-data-protection/#1z6VYpREIyuyxLC2.99" rel="nofollow">here</a>

If targetting iOS 4, you can use the Data Protection APIs.

If you have 'Full' protection, does this encrypt the entire sandbox?

Specifically, If I downloaded say a .doc file to disk programatically will this be encrypted? Or is it only encrypted if I use the NSData data protection options?

Data Protection on iOS

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

教程

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云智能顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云AI代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

功能1上新10个字符

功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符。

功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符。

功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符

功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

功能4上新

文章&问答评论现已支持表情

全新交互，全新视觉，新增快捷键、悬浮工具栏、高亮块等功能并同时优化现有功能，全面提升创作效率和体验

社区富文本编辑器全新改版！诚邀体验～ 

精选全网热门MCP server，让你的AI更好用 🚀

💥开发者 MCP广场重磅上线！

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

聚焦“写作效率、视觉美观与运行性能”三方面进行全面升级，为您提供更高效、稳定的创作环境

社区富文本&Markdown编辑器全新改版上线，欢迎大家体验!

诚挚邀请您参与本次调研，分享您的真实使用感受与建议。您的反馈至关重要，感谢您的支持与参与！

社区新版编辑器体验调研

如果目标是iOS 4，您可以使用数据保护API。如果你有“完全”保护，这会加密整个沙箱吗？具体地说，如果我以编程方式将一个.doc文件下载到磁盘，它会被加密吗？或者，如果我使用NSData数据保护选项，它是否仅被加密？

问iOS上的数据保护
EN

回答 4

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问iOS上的数据保护EN

回答 4

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问iOS上的数据保护
EN