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TestFlight对我的iOS可执行文件有什么作用？

[英]What does TestFlight do to my iOS executable?

原文 2017-03-30 19:35:18 7 2 ios/ app-store/ testflight

I hash my iOS executable at launch to verify its integrity, and have had no problems doing so until TestFlight -- which appears to modify the executable as well as install it in some funky (undocumented?) way. 我在启动时对我的iOS可执行文件进行了哈希处理以验证其完整性，直到TestFlight为止，这样做都没有问题-它似乎可以修改可执行文件并以某种时髦的方式（未记录？）进行安装。

Even more concerning is I get multiple hash values, which appear to vary by device or iOS version or carrier or something. 更令人担忧的是，我得到了多个哈希值，这些值似乎因设备或iOS版本，运营商或其他因素而有所不同。 I don't own enough devices to be certain. 我没有足够的设备来确定。 But none of the hashes match the one I compute prior to uploading to TestFlight. 但是没有一个哈希值与我上传到TestFlight之前计算的哈希值匹配。

So I have two questions: (1) What is TestFlight doing to my executable, and is the process documented somewhere? 因此，我有两个问题：（1）TestFlight对可执行文件做了什么，该过程是否记录在某处？ And (2) Does the final app store release pull the same shennanigan, or something similar, or does it leave my executable unmodified from when I uploaded it? （2）最终的应用商店发行版是否会提取相同的shennanigan或类似内容，还是在我上传可执行文件后不对其进行修改？

2 个解决方案

That's what code signing is for. 这就是代码签名的目的。

Code signing your app assures users that it is from a known source and the app hasn't been modified since it was last signed. 对应用程序进行代码签名可确保用户来自已知来源，并且自上次签名以来未对其进行过修改。

Source: https://developer.apple.com/support/code-signing/ 资料来源： https : //developer.apple.com/support/code-signing/

It seems like Apple encrypts your app. Apple似乎在加密您的应用程序。 While this post is about App Store submission, could be the same for Test Flight (not sure about this). 虽然这篇文章是关于App Store提交的，但对于Test Flight来说可能是相同的（不确定）。

See: https://stackoverflow.com/a/5784332/2019384 参见： https : //stackoverflow.com/a/5784332/2019384

Also it's not recommended to verify your apps integrity by yourself , as you'll run in such issues. 另外，不建议您亲自验证应用程序的完整性 ，因为这样会导致问题。 Besides iOS already does this for you: 此外，iOS已经为您做到了：

Apple does not provide any supported way for you to check your app's integrity. Apple没有为您提供任何支持的方法来检查应用程序的完整性。 iOS already does that by default. iOS已默认执行此操作。

Source: https://forums.developer.apple.com/thread/52801 资料来源： https : //forums.developer.apple.com/thread/52801

除了d4rk的答案外，如果您使用的是Swift，Apple还会以适当的位进行编译以针对每种设备优化您的应用程序。