A snippet from that article:
iOS estimated passcode cracking times (assumes random decimal passcode + an exploit that breaks SEP throttling):
4 digits: ~13min worst (~6.5avg) 6 digits: ~22.2hrs worst (~11.1avg) 8 digits: ~92.5days worst (~46avg) 10 digits: ~9259days worst (~4629avg)
The passcode is 'entangled' with a per-device 'UID' that only exists in silicon, not accessible by any firmware.
It seems that the current GrayKey attacks are closer to ~1s/guess.
My last post on the topic: https://news.ycombinator.com/item?id=16833802
[0] Page 15 https://www.apple.com/business/docs/iOS_Security_Guide.pdf
I'm not sure how GrayKey bypasses this...
A snippet from that article:
iOS estimated passcode cracking times (assumes random decimal passcode + an exploit that breaks SEP throttling):
4 digits: ~13min worst (~6.5avg) 6 digits: ~22.2hrs worst (~11.1avg) 8 digits: ~92.5days worst (~46avg) 10 digits: ~9259days worst (~4629avg)