WebAuthN Practically - iOS 15
Monday, September 20. 2021
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As Apple has recently released iOS 15, and iPadOS 15 and macOS 12 will be released quite soon. Why that is important is for Apple's native support for WebAuthN. In my WebAuthN introduction -post there is the release date for the spec: W3C Recommendation, 8 April 2021. Given the finalization of the standard, Apple was the first major player to step forward and start supporting proper passwordless authentication in it's operating systems. For more details, see The Verge article iOS 15 and macOS 12 take a small but significant step towards a password-less future.
For traditional approach with USB-cased Yubikey authenticator, see my previous post.
Step 1: Enter the username you'd like to register as.
Step 2: Go for Register
Step 3: Your browser will need a confirmation for proceeding with registration.
In Apple's ecosystem, the private key is stored into Apple's cloud (what!?). To allow access to your cloud-based secerts-storage, you must enter your device's PIN-code and before doing that, your permission to proceed is required.
Note: The option for "Use Security Key" is for using the Yubikey in Lightning-port. Both are supported. It is entirely possible to login using the same authenticator with a USB-C in my PC or Mac and Lightning with my iPhone or iPad.
Step 4: Enter your device PIN-code
Step 5: You're done! Now you have successfully registered.
Best part: No passwords! Private key is stored into Syncing Platform Authenticator. Btw. weird name that for WebAuthN in Apple-lingo. Ok, to be honest, WebAuthN is a mouthful too.
This was couple steps simpler than with Yubikey. Also there is the benefit (and danger) of cloud. Now your credential can be accessed from your other devices too.
Step 1: Enter the username you'd like to log in as.
Step 2: Go for Login
Step 3: Your browser will need a confirmation for proceeding with login. A list of known keys and associated user names will be shown.
Step 4: Enter your device PIN-code
Step 5: You're done! Now you have successfully logged in.
Best part: No passwords!
That's it. Really.
I don't think there is much more to add into it.
In comparison to Yubikey, any of your Apple-devices are authenticators and can share the private key. Obviously, you'll need iOS 15 or macOS 12 for that support.
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