[tptacek]

Is it made clear anywhere how memory for the Titan enclave works, and whether they've done something similar to Apple with encrypted memory busses?

[hackcasual]

> Titan M's CPU is an ARM Cortex-M3 microprocessor specially hardened against side-channel attacks and augmented with defensive features to detect and respond to abnormal conditions.

Looks like the security boundary is around the chip itself, so any bus level security would be application specific.

[wmf]

The post says 64 KB of RAM which is presumably on-chip.