A power analysis resistant block cipher cryptosystem with a macroscopic view of random operation insertions
Yujie Zhou · Information technology newsletter · 2011
In recent years,many countermeasures against power analysis are proposed,such as the dual-rail technique,the masking technique and the dummy operation insertion technique.Close scrutiny of them reveals that they all have potential pitfalls and are vulnerable to statistical analysis(including high-order statistical analysis).This paper proposes a novel cryptosystem which brings forward a new structure making use of random dummy round-function blocks during encryption/decryption process.The cryptosystem makes the encryption/decryption process unfixed and unrepeatable,which brings much trouble to DPA data analysis.It designs to 51-microcontroller and makes power analysis experiments on the cryptosystem.It proves to be strongly resistant against power analysis.