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Filesystem Data Protection<br />
Overview<br />
File blocks are encrypted using AES-XTS <strong>with</strong> 128-bit keys<br />
Each file on <strong>the</strong> user partition is encrypted using a unique random key chosen by SEP<br />
Raw file keys are never exposed to <strong>the</strong> AP<br />
• Wrapped <strong>with</strong> a key from <strong>the</strong> user keybag for long-term storage<br />
• Wrapped <strong>with</strong> an ephemeral key while in use, bound to boot session
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