Title
CIDPro: Custom Instructions for Dynamic Program Diversification
Abstract
Timing side-channel attacks pose a major threat to embedded systems due to their ease of accessibility. We propose CIDPro, a framework that relies on dynamic program diversification to mitigate timing side-channel leakage. The proposed framework integrates the widely used LLVM compiler infrastructure and the increasingly popular RISC-V FPGA soft-processor. The compiler automatically generates custom instructions in the security critical segments of the program, and the instructions execute on the RISC-V custom co-processor to produce diversified timing characteristics on each execution instance. CIDPro has been implemented on the Zynq7000 XC7Z020 FPGA device to study the performance overhead and security tradeoffs. Experimental results show that our solution can achieve 80% and 86% timing side-channel capacity reduction for two benchmarks with an acceptable performance overhead compared to existing solutions. In addition, the proposed method incurs only a negligible hardware area overhead of 1% slices of the entire RISC-V system.
Year
DOI
Venue
2018
10.1109/FPL.2018.00045
2018 28th International Conference on Field Programmable Logic and Applications (FPL)
Keywords
DocType
Volume
Hardware diversification,Custom Instructions,RISC V,Timing side channels,Software obfuscation
Conference
abs/1809.01221
ISSN
ISBN
Citations 
1946-147X
978-1-5386-8518-1
0
PageRank 
References 
Authors
0.34
10
5
Name
Order
Citations
PageRank
Thinh H. Pham1224.57
Alexander Fell2668.66
arnab kumar biswas3294.57
Siew-Kei Lam49914.60
Nandeesha Veeranna500.34