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Re: OCTET_STRING_t -> NSString?
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Re: OCTET_STRING_t -> NSString?


  • Subject: Re: OCTET_STRING_t -> NSString?
  • From: Quincey Morris <email@hidden>
  • Date: Tue, 29 Mar 2011 13:24:27 -0700

On Mar 29, 2011, at 13:03, Todd Heberlein wrote:

> I thought my Mac Cocoa program was pretty much done, and that all I needed to do was check off a box in Xcode's packaging or Apple's iTunes Connect web site saying "I want copy protection".

FWIW, my understanding of the reason it doesn't work that way is this:

A standard implementation of the receipt checking code could would permit a single hacking tool to hack away the protection from *every* Mac App Store download. If you implement this yourself, a hacker has to target your application specifically. Chances are, that won't be worth any hacker's time unless your app is incredibly successful.

As a consequence, once you have your code working, you should probably try to rearrange it a bit (reorder functions, obfuscate names, etc) to make it less like the sample code you're following along with, so that it's slightly more work for a hacker to crack your application. A hacker who have to spend a couple of hours at it, rather than a couple of minutes, might just not bother, and move on to some other unfortunate target.

As I said, FWIW.



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  • Follow-Ups:
    • Re: OCTET_STRING_t -> NSString?
      • From: Todd Heberlein <email@hidden>
References: 
 >OCTET_STRING_t -> NSString? (From: Todd Heberlein <email@hidden>)
 >Re: OCTET_STRING_t -> NSString? (From: Todd Heberlein <email@hidden>)
 >Re: OCTET_STRING_t -> NSString? (From: "Stephen J. Butler" <email@hidden>)
 >Re: OCTET_STRING_t -> NSString? (From: Chris Ridd <email@hidden>)
 >Re: OCTET_STRING_t -> NSString? (From: Wim Lewis <email@hidden>)
 >Re: OCTET_STRING_t -> NSString? (From: Todd Heberlein <email@hidden>)

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