It shares RAM with the AP, but its portion of the RAM is encrypted. The safe enclave itself is a flashable 4MB AKF processor core referred to as the safe enclave processor as documented in Apple Patent Application .

In the beginning, iOS had a kernel model normally larger than the corresponding model of macOS. Over time, the kernels of iOS and macOS have gotten nearer. It seems Apple is gradually merging the iOS and macOS kernels over time.

The first time a 3rd‑celebration app needs to access your information — like your location, contacts, calendars, or pictures — you obtain an alert. We also ensure that apps are denied entry to certain delicate information on your system, are unable to change your system or OS, and are prohibited from acquiring complete access to your data. The iOS keychain is a database of login information that may be shared across …