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by chenxiaolong
2018 days ago
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Looking at the iOS platform security document ([0] page 68), apps use NSFileProtectionCompleteUntilFirstUserAuthentication by default, which keeps keys in memory after the first unlock, regardless of the Power + Volume Down lock. If an app opts into NSFileProtectionComplete, I believe the keys are purged from memory upon locking. [0] https://manuals.info.apple.com/MANUALS/1000/MA1902/en_US/app... |
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