Liu Wenchao, Zhang Zhenhua, Li Miaoxin, Liu Zhenglin
School of Optical and Electronic Information, Huazhong University of Science and Technology, No. 1037 Luoyu Road, Wuhan 430074, China.
Sensors (Basel). 2014 Jun 30;14(7):11542-56. doi: 10.3390/s140711542.
Secret key leakage in wireless sensor networks (WSNs) is a high security risk especially when sensor nodes are deployed in hostile environment and physically accessible to attackers. With nowadays semi/fully-invasive attack techniques attackers can directly derive the cryptographic key from non-volatile memory (NVM) storage. Physically Unclonable Function (PUF) is a promising technology to resist node capture attacks, and it also provides a low cost and tamper-resistant key provisioning solution. In this paper, we designed a PUF based on double-data-rate SDRAM Type 3 (DDR3) memory by exploring its memory decay characteristics. We also described a prototype of 128-bit key generation based on DDR3 PUF with integrated fuzzy extractor. Due to the wide adoption of DDR3 memory in WSN, our proposed DDR3 PUF technology with high security levels and no required hardware changes is suitable for a wide range of WSN applications.
无线传感器网络（WSN）中的密钥泄露是一个高安全风险，特别是当传感器节点部署在敌对环境中且攻击者可以实际接触到时。利用当今的半侵入式/全侵入式攻击技术，攻击者可以直接从非易失性存储器（NVM）存储中获取加密密钥。物理不可克隆函数（PUF）是一种很有前途的技术，可抵御节点捕获攻击，并且它还提供了一种低成本且抗篡改的密钥供应解决方案。在本文中，我们通过探索其内存衰减特性，设计了一种基于第三代双倍数据速率同步动态随机存取存储器（DDR3）的PUF。我们还描述了基于带有集成模糊提取器的DDR3 PUF的128位密钥生成原型。由于DDR3内存在WSN中广泛应用，我们提出的具有高安全级别且无需硬件更改的DDR3 PUF技术适用于广泛的WSN应用。
