Bring the Missing Jigsaw Back
Hongliang Liang, Mingyu Li · 2018
Intel SGX provisions shielded executions for security-sensitive computation, but has to rely on untrusted system services, such as clock, network and filesystem. This makes enclaves vulnerable to Iago attacks [5]. For example, current SGX programs cannot obtain a trusted clock to fulfill its purposes. To mitigate this problem, we present TrustedClock, which brings high-precision, low-latency and attack-aware absolute clock into the SGX ecosystem. Our experimental results show that TrsutedClock outperforms existing clock services with its design goals.