Check an app bundle's code signing and sandboxing state to NSBundle.
Latest commit d2430d7 Jul 4, 2014 @ole Add warning to readme



A category on NSBundle that adds method to check an app bundle's code signing and sandboxing state.

Written by Ole Begemann, February 2012.

For more info, see the corresponding blog post: Checking Code Signing and Sandboxing Status in Code.


Please do not use this code in your apps. It was just a quick experiment and is neither tested nor secure.


  1. Add the files NSBundle+OBCodeSigningInfo.h and NSBundle+OBCodeSigningInfo.m to your Xcode project.
  2. #import "NSBundle+OBCodeSigningInfo.h"
  3. For a given NSBundle, call one or more of these methods to get information about its code signing state:

    - (BOOL)ob_comesFromAppStore;
    - (BOOL)ob_isSandboxed;
    - (OBCodeSignState)ob_codeSignState;