Speech recognition used in the 'Hey Siri' feature.Controller for a touchscreen, implemented as the TouchBar in portable Macintosh computers.Video codec enabling accelerated encoding and decoding of h.264 and h.265.Image coprocessor enabling accelerated image processing and quality enhancements such as color, exposure balance, and focus for the iMac Pro's FaceTime HD camera.There are other facilities present not directly associated with security. The T2 is integral in securing powering up and the boot sequence and upgrading of operating systems, not allowing unsigned components to interfere. Controllers for microphones, camera, ambient light sensors and Touch ID, decoupling the main operating system's access to those.storage controller for the computer's solid-state drive, including always on, on the fly encryption and decryption of data to and from it.

A Public Key Accelerator is used to perform asymmetric cryptography operations like RSA and elliptic-curve cryptography.An AES Crypto Engine implementing AES-256 and a hardware random number generator.And it also stores the machine's unique ID (UID) and group ID (GID). The SEP is used for handling and storing encrypted keys, including keys for Face ID, FileVault, macOS Keychain and UEFI firmware passwords.There are numerous features regarding security. The T2 communicates with the host via a USB-attached Ethernet port. The T2 module is built as a package on a package (PoP) together with its own 2 GB LP-DDR4 RAM in the case of iMac Pro or 1 GB in the case of MacBook Pro 15' early 2019. It is running an operating system called 'sepOS' based on the L4 microkernel. 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. The main application processor in T2 is running an operating system called bridgeOS. It is designed to stay active even though the main computer is in a halted low power mode. Īs it serves as a co-processor to its Intel based host, it also consists of several facilities handling a variety of functions not present in the host system's main platform. The die measures 9.6 × 10.8 mm, a die size of 104 mm 2, which amounts to about 80% of the size of the A10. Analysis also reveals the same amount of RAM controllers, but a much reduced GPU facility three blocks, only a quarter the size compared to A10. Analysis of the die reveals a nearly identical CPU macro as the A10 which reveals a four core design for its main application processor, with two large high performance cores, 'Hurricane', and two smaller efficiency cores, 'Zephyr'.

It is manufactured by TSMC on their 16 nm process, just as the A10. The main application processor in T2 is a variant of the Apple A10, which is a 64-bit ARMv8.1-A based CPU.

Apple macbook encryption