11.08.2016 Views

Behind the Scenes with iOS Security

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Data Protection<br />

Goals<br />

User data protected by strong cryptographic master key derived from user passcode<br />

No offline attack on user passcode—hardware-bound master key derivation<br />

Hardware keys for master key derivation not directly exposed to any mutable software<br />

Secure support for alternative unlock mechanisms (Touch ID, Auto Unlock)<br />

Sidesteps AP attack surface, SEP policy enforced under adversarial AP

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