Many parts of iCloud Keychain are actually open source: opensource.apple.com/source/Securit…
And even then it's hard to tell what some codenames mean. I wonder if Apple redacts in-code documentation before publishing it or if they don't have any to begin with 🤔
And even then it's hard to tell what some codenames mean. I wonder if Apple redacts in-code documentation before publishing it or if they don't have any to begin with 🤔
But I managed to figure out *some* stuff. So instead of "what the heck are SOS and CKKS and Engram and Manatee", now I know "SOS (SecureObjectSync) is the old sync system, CKKS (CloudKit Keychain Sync) is the new one, Engram and Manatee are some CKKS-only keychain sync views"
I still don't know how SOS or CKKS work, or what a "keychain view" really means, or what's stored in Engram vs Manatee, but it's *something*, and writing it down can help others start from a non-blank state if they want to research this more:
theiphonewiki.com/wiki/ICloud_Ke…
theiphonewiki.com/wiki/ICloud_Ke…
Heh, searching "apple ckks" on DuckDuckGo, the first result is someone being paranoid about com.apple.security.ckks entries in the keychain viewer on macOS, the second is the wiki page braindump I wrote today.
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