>That doesn’t work as well because the counter is kept in the Secure Enclave so ...

Godel_unicode · on Feb 28, 2018

"On devices with Secure Enclave, the delays are enforced by the Secure Enclave coprocessor." Page 15

It was also confirmed explicitly during the Q&A at the blackhat talk in 2016, which I believe is on YouTube.

gruez · on Feb 28, 2018

>It was also confirmed explicitly during the Q&A at the blackhat talk in 2016, which I believe is on YouTube.

Godel_unicode · on March 1, 2018

That’s not the apple talk. Apple gave a talk specifically about hardware security in the iPhone.

Edit 2: the question was asked at 47:20

Scoundreller · on Feb 28, 2018

It makes the most sense that it's in the Secure Enclave. Once you have control of the counter, you can run through the passphrase space in no time.

tinus_hn · on Feb 28, 2018

Only if the pass’phrase’ is a short numeric code. iOS also allows a normal password.