If it's not running fully end to end in some secure enclave, then it's always just a best effort thing. Good marketing though.
Apple is perfectly capable of doing remote attestation properly. iOS has DCAppAttest which does everything needed. Unfortunately, it's never been brought to macOS, as far as I know. Maybe this MDM hack is a back door to get RA capabilities, if so it'd certainly be intriguing, but if not as far as I know there's no way to get a Mac to cough up a cryptographic assertion that it's running a genuine macOS kernel/boot firmware/disk image/kernel args, etc.
It's a pity because there's a lot of unique and interesting apps that'd become possible if Apple did this. Darkbloom is just one example of what's possible. It'd be a huge boon to decentralization efforts if Apple activated this, and all the pipework is laid already so it's really a pity they don't go the extra mile here.
Apple's docs claim it's been available on macOS since macOS 11. Am I missing something here?
https://developer.apple.com/documentation/devicecheck/dcappa...
https://developer.apple.com/documentation/devicecheck/dcappa...
> If you read isSupported from an app running on a Mac device, the value is false. This includes Mac Catalyst apps, and iOS or iPadOS apps running on Apple silicon.
The biggest argument for remote attestation I can think of is to make sure nobody is returning random bullshit and cashing in prompt money on a massive scale.