| 摘要: |
| 随着神经网络的广泛应用，它自身的安全问题也成为了一个重要的研究课题。将神经网络部署到神经网络处理器上运行是提高能效比的有效方法，但同时也引入了一些新的安全问题，比如侧信道信息泄露，本文以多核CNN处理器为基础，利用时间和内存侧信道信息，提出了一种针对多核CNN处理器的用户算法信息窃取攻击方法，经过试验证明了攻击的有效性，并针对多核神经网络处理器在时间和内存侧信道方面的脆弱性，提出了有效的防御手段，对如何保护神经网络处理器的安全提供了一定的参考意义。 |
| 关键词: 神经网络 CNN处理器 多核 侧信道 模型窃取 |
| DOI：10.19363/J.cnki.cn10-1380/tn.2020.05.03 |
| Received:February 02, 2020Revised:April 24, 2020 |
| 基金项目:本课题得到国家自然基金（No.61876173）和中国科学院战略性先导专项项目（No.XDC05030201）资助。 |
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| An Information-leakage Threat Case for Multi-core Neural Network Processor |
| GAO Chengsi,CHEN Weiwei,WANG Ying |
| Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China |
| Abstract: |
| With the widespread application of neural networks, its own security issues have also become an important research topic. Deploying a neural network to a neural network accelerator is an effective method to improve energy-efficiency, but it also introduces some new security issues, such as side-channel information leakage. Based on multi-core CNN accelerator, we proposed a model extraction attack by exploiting timing and memory side-channel information leakage. The results of the experiments demonstrate the effectiveness of the attack. Then we proposed effective defense methods for the vulnerability of multi-core neural network accelerators in terms of timing and memory side-channels. It provides some reference for how to protect the safety of neural network accelerators. |
| Key words: neural network convolution neural network accelerator multi-core side-channel model extraction attack |
