计算机工程 ›› 2020, Vol. 46 ›› Issue (6): 115-121.doi: 10.19678/j.issn.1000-3428.0054936

• 网络空间安全 • 上一篇    下一篇

基于FPGA的时钟同步功耗信息采集方法

宋安1a, 王琴1a, 谷大武1a, 郭筝1a,1b, 刘军荣1a,2, 张驰1a   

  1. 1. 上海交通大学 a. 电子信息与电气工程学院;b. 网络空间安全学院, 上海 201100;
    2. 智巡密码(上海)检测技术有限公司, 上海 201100
  • 收稿日期:2019-05-16 修回日期:2019-07-03 发布日期:2019-07-14
  • 作者简介:宋安(1995-),男,硕士研究生,主研方向为旁路攻击;王琴,副教授;谷大武,教授;郭筝,博士;刘军荣,博士研究生;张驰,博士。
  • 基金项目:
    闵行区中小企业技术创新计划“基于区块链技术的金融业务平台”(2018MH110)。

FPGA-based Collection Method for Power Information of Clock Synchronization

SONG An1a, WANG Qin1a, GU Dawu1a, GUO Zheng1a,1b, LIU Junrong1a,2, ZHANG Chi1a   

  1. 1a. School of Electronic Information and Electrical Engineering;1b. School of Cyber Science and Engineering, Shanghai Jiao Tong University, Shanghai 201100, China;
    2. ZhiXun Crypto Testing and Evaluation Technology Co., Ltd., Shanghai 201100, China
  • Received:2019-05-16 Revised:2019-07-03 Published:2019-07-14

摘要: 传统的异步采集方法会影响采集到的功耗信息的信噪比,降低功耗分析的成功率。针对异步采集的问题,提出一种新的时钟同步功耗信息采集方法。该采集方法基于现场可编程门阵列(FPGA)的时钟同步采集平台,利用基于FPGA时钟同步设备向待采集设备和示波器发送同步的时钟信号,使采集过程中的待采集设备与示波器的工作状态同步。在此基础上运用电气解耦原理,隔离外部信号对待采集设备的影响,改善功耗信息的信躁比。通过相关功耗分析进行实验验证,结果表明,该方法采集效率最高提升66.7%,明显提高功耗分析的成功率。

关键词: 旁路攻击, 功耗分析, 现场可编程门阵列, 时钟同步采样, 电气解耦

Abstract: Traditional asynchronous acquisition method affects the signal-to-noise ratio of collected power information information,resulting in a decrease in the success rate of power information analysis.To address the problem of asynchronous acquisition,this paper proposes a new power information collection method for clock synchronization.Based on the clock synchronization collection platform of the Field Programmable Gate Array(FPGA),this method uses clock synchronization based devices to send a clock signal of synchronization to the to-be-collected device and the oscilloscope,so that the to-be-collected device is synchronized with the working state of the oscilloscope.The principle of electrical decoupling is used to isolate the influence of external signals on the to-be-collected device,and improves the signal-to-noise ratio of the power consumption information.Through Correlation Power Analysis(CPA),result shows that the proposed method improves the collection efficiency by up to 66.7%,greatly improving the success rate of power analysis.

Key words: Side Channel Attacks(SCA), power analysis, Field Programmable Gate Array(FPGA), clock synchronous sampling, electrical decoupling

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