4 ms·

Isolated co-processors and memory.

• oh_sigh 7y ago
  If the user secret key like a pin is going through iOS, to the secure enclave, you can still run a hacked iOS which reports the stolen pin back to some server.
  • rficcaglia 7y ago
    Typically the os would only have access to the encrypted pin, then use special secure enclave instructions to compute inside the enclave (basically special encrypted memory inside the processor). Ie the plaintext pin would never leave the enclave, even when the os kernel is compromised If you had the chip in a lab you could do sidechannel physical attacks with lasers and liquid nitrogen, etc
    • eternalny1 7y ago
      > If you had the chip in a lab you could do sidechannel physical attacks with lasers and liquid nitrogen Wow, what do you do for a living if I might ask?
      • deleted 7y ago
        [deleted]
    • hcs 7y ago
      I think oh_sigh means capturing it when it is entered?