Bug 36454 - Missing bindings for constants used with Secure Enclave
Summary: Missing bindings for constants used with Secure Enclave
Alias: None
Product: iOS
Classification: Xamarin
Component: Xamarin.iOS.dll ()
Version: XI 9.2
Hardware: Macintosh Mac OS
: Normal enhancement
Target Milestone: (C7)
Assignee: Bugzilla
Depends on:
Reported: 2015-12-02 02:47 UTC by Jon Goldberger [MSFT]
Modified: 2015-12-24 17:03 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Jon Goldberger [MSFT] 2015-12-02 02:47:02 UTC
## Description

There does not seem to be a way to access the string constants used with the Secure Enclave, like:

and others. However it is worth noting that I can not find the value for these constants in Apple's docs either. 

I am able to retrieve them with:

IntPtr ptr = ObjCRuntime.Dlfcn.dlopen (Constants.SecurityLibrary, 0);
var kSecAttrTokenID = Dlfcn.GetStringConstant (ptr, "kSecAttrTokenID");
var kSecAttrTokenIDSecureEnclave = Dlfcn.GetStringConstant (ptr, "kSecAttrTokenIDSecureEnclave");

Our docs [1] only say this about using Secure Enclave:
"Support for generating and using keys inside the secure enclave (via the kSecAttrTokenIDSecureEnclave attribute)."

yet with no indication as to how to access the kSecAttrTokenIDSecureEnclave attribute, or other needed keys like kSecAttrTokenID. 

[1] http://developer.xamarin.com/guides/ios/platform_features/introduction_to_ios9/#Keychain_Enhancements
Comment 2 Sebastien Pouliot 2015-12-24 17:03:57 UTC
Fixed in maccore/master 2cc284dc8542ba675e9757f943b625b5c70ac138