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I am building an app that will be distributed with an enterprise license. I am following these steps to build the application from xcode:

  1. Choose Generic iOS Device.
  2. Product -> Archive
  3. Window -> Organizer -> Export -> Save for Enterprise Deployment

However when I generate an IPA in this fashion I don't think the binary is encrypted using apples fairplay.

I unzipped the IPA then ran this on the binary:

otool -arch armv7 -l thebinary | grep crypt

Which produced:

 cryptoff 15584
cryptsize 2364346
  cryptid 0

From some other sources, I believe 'cryptid 0' show the binary is not encrypted.

  1. Is this the right way to check if the binary is encrypted?
  2. Is there a way to use FairPlay to encrypt iOS Enterprise Applications?
lostintranslation
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  • Hi, Although it's very old question. Perhaps you did some investigation on this issue ? I'm seeking to understand exactly how is the binary encryption is made in terms of what algorithm being used, where is the key. thanks ! – osxUser Nov 16 '21 at 08:57

1 Answers1

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Is this the right way to check if the binary is encrypted?

Yes:

$ otool -arch armv7 -l thebinary | grep crypt

$ otool -arch arm64 -l thebinary | grep crypt

Is there a way to use FairPlay to encrypt iOS Enterprise Applications?

No (AppStore submissions only)

Bugs
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Yong-bin Jeong
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  • Regarding how to trigger the encryption, so from what I understand, only Apple control the encryption when the app is being sent to appStore and the algo+key is also out of the developer scope. right ? – osxUser Nov 15 '21 at 19:36