Power Analysis of Symmetric Block Cipher Kuznyechik

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.