November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
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Keychain Attribute Keys
Keychains are stored much like NSDictionaries; however, they have very specific keys that can be associated with them. Unlike an NSDictionary, a Keychain cannot use any random string for a key value. Each Keychain is associated with a Keychain Class; if using Apple’s KeychainItemWrapper, it defaults to using CFTypeRef kSecClassGenericPassword. However, other options exist for kSecClassInternetPassword, kSecClassCertificate, kSecClassKey, and kSecClassIdentity. Each class has different associated values attached to it. For the purposes of this chapter as well as for the KeychainItemWrapper, the focus will be on kSecClassGenericPassword.
kSecClassGenericPassword contains 14 possible keys for storing and accessing data, as ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.