A 286F2/Cell Distributed Bulk-Current Sensor and Secure Flush Code Eraser Against Laser Fault Injection Attack

📋 论文概要

该论文提出了一种针对激光故障注入攻击的闭环对策，包括分布式体电流传感器和安全擦除代码机制。在0.18μm CMOS AES核上实现，仅增加28%面积开销即可有效禁用激光攻击。

💡 主要创新点

• 提出286F2/单元的分布式体电流传感器，通过检测体接触异常电流来感知激光注入。
• 设计安全擦除代码机制，在检测到攻击后以纳秒级速度短路核心电源，防止故障密文泄露。

🏷 关键词

📄 原文摘要

and Technology, Ikoma, Japan 1 2 A sense-and-react closed-loop countermeasure is proposed against Laser Fault Injection (LFI) attack on a cryptographic processor core. A 286F2/cell distributed bulk-current sensor detects laser injection by abnormal current conduction at bulk contacts. Upon the detection, a flush code eraser avoids exposure of laser-induced faulty ciphertext by shunting the core supply instantaneously at ns order. A protected AES core in 0.18μm CMOS successfully disables the LFI attack with only +28% area penalty. LFI is one of the most powerful physical attacks on the cryptographic cores, such as AES (Fig. 21.5.1). By intentionally inducing a cryptographic operation for faulty data, the secret key information can be disclosed through the difference between

👥 作者与机构

Kohei Matsuda1, Tatsuya Fujii2, Natsu Shoji2, Takeshi Sugawara2,

Kazuo Sakiyama2, Yu-ichi Hayashi3, Makoto Nagata1, Noriyuki Miura1 Kobe University, Kobe, Japan University of Electro-Communications, Chofu, Japan 3 Nara Advanced Institute of Science