Masking vs. Multiparty Computation: How Large is the Gap for AES?

Provided by: Universite Bordeaux 1
Topic: Security
Format: PDF
In this paper, the authors evaluate the performances of state-of-the-art higher-order masking schemes for the AES. Doing so, they pay a particular attention to the comparison between specialized solutions introduced exclusively as countermeasures against side-channel analysis, and a recent proposal exploiting Multi-Party Computation (MPC) techniques. They show that the additional security features this latter scheme provides (e.g. its glitch-freeness) comes at the cost of large performance overheads. They then study how exploiting standard optimization techniques from the MPC literature can be used to reduce this gap.

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