A Block Cipher Circuit Design against Power Analysis

Abstract

In this paper, we will present a block cipher circuit design against Power Analysis. This design consists of usual masking and hiding method. For XOR, permutation and other linear layer, masking method of protection is used, but for S-box and other non-linear layer, hiding method is used in the reason that masking requires a lot of hardware consumption. We accomplished hardware implementation and Power Analysis in our research, whose test results proved that the design had strong capacity against Power Analysis. 200, 000 curves were extracted in our attack simulation, and the key successfully resisted complete recovery.