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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Setting Up a New KeychainItemWrapper
On iOS Keychains are unlocked based on the code signing of the app that is requesting it. Since there is no systemwide password as seen on OS X, there needs to be an additional step to secure data. Since the app controls which Keychain data can be accessed to truly secure information, the app itself should be password protected. This is done through the sample app using a PIN entry system.
When the app is launched for the first time, it will prompt the user to enter a new PIN and repeat it. To securely store the PIN, a new KeychainItemWrapper is created.
pinWrapper = [[KeychainItemWrapper alloc]initWithIdentifier:@"com.ICF.Keychain.pin" accessGroup:nil];
Creating a new KeychainItemWrapper ...
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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.