Presentation
LeakyDSP: Exploiting Digital Signal Processing Blocks to Sense Voltage Fluctuations in FPGAs
SessionOf Circuits and Secrets: Emerging Hardware Security Primitives and Cryptographic Accelerators
DescriptionIn recent years, cloud providers are dedicated to enabling FPGA multi-tenancy to improve resource utilization, but this new sharing model introduces power side-channel threats, where attackers detect voltage fluctuations from co-located circuits. This paper proposes LeakyDSP, a novel on-chip sensor that maliciously configures DSP blocks to sense fine-grained voltage fluctuations but is overlooked by existing studies. Our experimental results show that LeakyDSP achieves high sensitivity to voltage fluctuations and strong robustness to different placements. Besides, we apply LeakyDSP to extract full AES keys with 25k-78k traces and build covert channels with a high transmission rate of 247.94 bit/s.
Event Type
Research Manuscript
TimeWednesday, June 251:45pm - 2:00pm PDT
Location3008, Level 3
Security
SEC2: Hardware Security: Primitives & Architecture, Design & Test