Here's how Apple describes their design of the Secure Enclave. I'd figure that Qualcomm, NXP, AMD, etc have a similar design. > The Secure Enclave Processor p

Here's how Apple describes their design of the Secure Enclave. I'd figure that Qualcomm, NXP, AMD, etc have a similar design. > The Secure Enclave Processor provides the main computing power for the Secure Enclave. To provide the strongest isolation, the Secure Enclave Processor is dedicated solely for Secure Enclave use. This helps prevent side-channel attacks that depend on malicious software sharing the same execution core as the target software under attack. > The Secure Enclave Processor runs an Apple-customized version of the L4 microkernel. It’s designed to operate efficiently at a lower clock speed that helps to protect it against clock and power attacks. The Secure Enclave Processor, starting with the A11 and S4, includes a memory-protected engine and encrypted memory with anti-replay capabilities, secure boot, a dedicated random number generator, and its own AES engine.