题目/Title：
                        Key recovery against 3DES in CPU smart card based on improved correlation power analysis

作者/Author：
                        Yanting Ren,Liji Wu,Hexin Li,Xiangyu Li,Xiangmin Zhang,An Wang,Hongyi Chen

期刊/Journal：清华大学学报自然科学版（英文版） Tsinghua Science and Technology

年份/Issue Date：2016.Apr.

卷（期）及页码/Volume（No.）&pages：Vol.21, No.2, pp. 210 - 220

摘要/Abstract：

The security of CPU smart cards, which are widely used throughout China, is currently being threatened by side-channel analysis. Typical countermeasures to side-channel analysis involve adding noise and filtering the power consumption signal. In this paper, we integrate appropriate preprocessing methods with an improved attack strategy to generate a key recovery solution to the shortcomings of these countermeasures. Our proposed attack strategy improves the attack result by combining information leaked from two adjacent clock cycles. Using our laboratory-based power analysis system, we verified the proposed key recovery solution by performing a successful correlation power analysis on a Triple Data Encryption Standard (3DES) hardware module in a real-life 32-bit CPU smart card. All 112 key bits of the 3DES were recovered with about 80 000 power traces.