Securing Encryption Systems With a Switched Capacitor Current Equalizer

Tokunaga C.

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Securing Encryption Systems With a Switched Capacitor Current Equalizer

机译：Securing Encryption Systems With a Switched Capacitor Current Equalizer

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摘要

Hardware encryption engines are essential components of secure systems. They are widely used in desktop applications such as the trusted platform module as well as in mobile applications where they offer high energy efficiency compared to their software implementation counterparts. Unfortunately, ASIC encryption engines leak side-channel information through their power supplies. This information can be used by attackers to reveal their secret keys with attacks such as differential power analysis. Dual-rail logic and noise addition circuits increase the security against these attacks, but they add higher than 3x overheads in area, power, and performance to unsecured encryption engines. In this work, we present a switched capacitor circuit that equalizes the current to isolate the critical encryption activity from the external supplies, eliminating the side-channel information leakage. The secure encryption system was implemented in a 0.13 ??m CMOS technology with 7.2% area and 33% power overheads and a 2 ?? performance degradation. The secret encryption key was not revealed after ten million side-channel attacks.

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来源
《IEEE Journal of Solid-State Circuits》 |2010年第1期|共9页
作者
Tokunaga C.;
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作者单位

Intel, Hillsboro, OR, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类 NULL;
关键词
CMOS integrated circuits; application specific integrated circuits; capacitors; cryptography; equalisers; logic circuits; ASIC encryption engines; CMOS technology; desktop applications; differential power analysis; dual-rail logic; encryption system security; hardware encryption engines; mobile applications; noise addition circuits; power supplies; secret encryption key; side-channel attacks; side-channel information leakage; size 0.13 mum; switched capacitor current equalizer; trusted platform module; Security; encryption; switched capacitor circuits;

Securing Encryption Systems With a Switched Capacitor Current Equalizer

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