Thermal covert channels on multi-core platforms

摘要: Side channels remain a challenge to information flow control and security in modern computing platforms. Resource partitioning techniques that minimise the number of shared resources among processes are often used address this challenge. In work, we focus on multicore platforms demonstrate even seemingly strong isolation based dedicated cores can be circumvented through use thermal channels. Specifically, show processor core temperature both as side channel well covert communication when system implements spatial temporal partitioning. Our experiments an Intel Xeon server platform achieve up 12.5 bps weak detect executed neighbouring cores. This work therefore shows limitation achieved existing multi-core systems.