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The Secure Enclave is a coprocessor found in iOS devices part of the A7 and newer chips used for data protection. It includes the user data pertaining to Touch ID, Face ID, and Apple Pay, among other sensitive data. [2]
Apple A series processors beginning with the A7 contain a Secure Enclave coprocessor running an L4 operating system [14] called sepOS (Secure Enclave Processor OS) based on the L4-embedded kernel developed at NICTA in 2006. [15] As a result, L4 ships on all modern Apple devices including Macs with Apple silicon. In 2015 alone, total shipments ...
The secondary processor in T2 is an 32-bit ARMv7-A based CPU called Secure Enclave Processor (SEP) which has the task of generating and storing encryption keys. It is running an operating system called "sepOS" based on the L4 microkernel .
[13] [14] The A7 also includes an area called the "Secure Enclave" that stores and protects the data from the Touch ID fingerprint sensor on the iPhone 5S and iPad mini 3. [10] It has been speculated that the security of the data in the Secure Enclave is enforced by ARM's TrustZone/SecurCore technology. [15]
This check ensures the device and the iOS features related to Touch ID remain secure. Without this unique pairing, a malicious Touch ID sensor could be substituted, thereby gaining access to the secure enclave. When iOS detects that the pairing fails, Touch ID, including Apple Pay, is disabled so the device remains secure.
The Secure Enclave initiative is designed to ensure a secure supply of microelectronics for defense requirements, aligning with the Department of Defense's enduring need for state-of-the-art ...
iOS enforces strict sandboxing to maintain security and privacy. Apps are generally limited to accessing their own containers and specific system-provided directories, such as the Photos library. To access files outside of their sandbox, iOS uses mechanisms like document pickers, file providers, and app extensions.
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