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Difference between revisions of "XART"
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Revision as of 00:29, 29 August 2020
eXtendable Anti-Replay Tokens. Stylized as xART.
Introduction
https://en.wikipedia.org/wiki/Replay_attack https://papers.put.as/papers/ios/2019/blackhat-2019-crlmhg-v4.pdf
Use in Apple Processors
- T2 (A10 base) has xART in sideband data
- A11 and higher have on-package EEPROM for anti-replay
- mART in iOS 12 and prior, xART in iOS 13 and up
Interfacing with xART
In recovery the xART can be reset with `xartutil`