Demystifying the Secure Enclave Processor
Lyj6k4
Lyj6k4
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Mailbox Message Format<br />
• A single message is 8 bytes in size<br />
• Format depends on <strong>the</strong> receiving endpoint<br />
• First byte is always <strong>the</strong> destination endpoint<br />
struct {<br />
uint8_t endpoint; // destination endpoint number<br />
uint8_t tag; // message tag<br />
uint8_t opcode; // message type<br />
uint8_t param; // optional parameter<br />
uint32_t data;<br />
// message data<br />
} sep_msg;