+/* Token login support */
+OSStatus SecKeychainStoreUnlockKeyWithPubKeyHash(CFDataRef pubKeyHash, CFStringRef tokenID, CFDataRef wrapPubKeyHash, SecKeychainRef userKeychain, CFStringRef password)
+ __OSX_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_NA);
+OSStatus SecKeychainEraseUnlockKeyWithPubKeyHash(CFDataRef pubKeyHash)
+ __OSX_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_NA);
+
+/* calls to interact with keychain versions */