Join Bear Cahill for an in-depth discussion in this video Solution: Add user authentication, part of Advanced iOS Development: Keychain Access.
(upbeat music) … - [Instructor] Okay, so let's go over this challenge … of adding user authentication. … So the first thing we want to do is fetch the password … for this username. … So after line 65, I'm going to add a couple of blank lines … and I'm going to optionally bind … the password fetched from the keychain. … So I'll say if let pwSaved for the saved password. … And I'll call the secure manager retrievePassword … and pass in UN for the unwrapped username. … So if we got a password, we want to compare it … against the password they typed in. … We also unwrap that to pw. … So I'll say if pwSaved is not equal to pw … then we're basically done. … They entered their password wrong … and we're going to call completion nil. … So that means they shouldn't get stored, … they shouldn't be set as logged in, … and we're not going to pass back a user login instance. … Otherwise, if we didn't get a password, … we want to store the user and we can do that here. … So I'm just going to cut lines 75 to 77 …
Author
Released
1/23/2020- Creating keychain queries
- Storing generic passwords
- Retrieving data from the keychain
- Handling search results
- Updating and deleting keychain values
- Working with keychain access groups
Skill Level Advanced
Duration
Views
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Introduction
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1. iOS Keychain Services
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Secure enclave41s
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Attribute keys and values1m 44s
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2. Storing Keychain Values
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Xcode project configuration1m 31s
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iOS code overview4m 12s
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Storing a generic password2m 54s
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Review keychain database2m 6s
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3. Retrieving Data from the Keychain
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Keychain search concepts4m 36s
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Keychain search query1m 32s
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Searching in keychain1m 40s
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Handling search results3m 24s
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4. Updating and Deleting Keychain Values
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Update keychain preparation2m 34s
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5. Keychain Sharing
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Keychain access groups1m 39s
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Sharing keychain data4m 18s
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App group data sharing1m 20s
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Sharing data in app group2m 42s
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6. Building the App Challenges
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Conclusion
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Next steps32s
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Video: Solution: Add user authentication