Power Analysis of Symmetric Block Cipher Kuznyechik
Маро Екатерина Александровна, Vadim Girichev · 2020
Paper presents an overview of power analysis attack and experimental results of the first main stage of simple power analysis (SPA) and differential power analysis (DPA) attacks-a practical correlation of power consumption measurement charts to each of encryption operations for standard Kuznyechik cipher (GOST R 34.12-2015 (n = 128)). As part of experiments we construct lightweight hardware implementation of Kuznyechik cipher on Arduino electric board (namely Arduino Nano) and compile measurements of power consumption by LECROY WavePro 7100A oscilloscope (with a 1 GHz bandwidth and 10 GHz / 4 channel sampling frequency). Our experiments led to finding signature (fixed structure and power consumption value) for encryption operations of Kuznyechik cipher: additions with round key, nonlinear transformation and linear transformation.