vivo Internet Technology

Apr 5, 2023 · Information Security

TrustZone Architecture: Hardware-Level Privacy Protection for Smartphones

TrustZone implements a hardware‑level privacy shield for smartphones by partitioning CPU, bus, memory, peripherals and interrupts into a Secure World and a Normal World, using ARMv8 exception levels and extensions such as SCR, TZPC, TZASC, GIC and MMU to isolate user data from non‑secure software.