Title :
Toward Wireless Security without Computational Assumptions—Oblivious Transfer Based on Wireless Channel Characteristics
Author :
Zhuo Hao ; Yunlong Mao ; Sheng Zhong ; Li, Li Erran ; Haifan Yao ; Nenghai Yu
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
Wireless security has been an active research area since the last decade. A lot of studies of wireless security use cryptographic tools, but traditional cryptographic tools are normally based on computational assumptions, which may turn out to be invalid in the future. Consequently, it is very desirable to build cryptographic tools that do not rely on computational assumptions. In this paper, we focus on a crucial cryptographic tool, namely 1-out-of-2 oblivious transfer. This tool plays a central role in cryptography because we can build a cryptographic protocol for any polynomial-time computable function using this tool. We present a novel 1-out-of-2 oblivious transfer protocol based on wireless channel characteristics, which does not rely on any computational assumption. We also illustrate the potential broad applications of this protocol by giving two applications, one on private communications and the other on privacy preserving password verification. We have fully implemented this protocol on wireless devices and conducted experiments in real environments to evaluate the protocol. Our experimental results demonstrate that it has reasonable efficiency.
Keywords :
computational complexity; cryptographic protocols; data privacy; transport protocols; wireless channels; 1-out-of-2 oblivious transfer protocol; computational assumptions; cryptographic protocol; cryptographic tools; polynomial-time computable function; privacy preserving password verification; private communications; wireless channel characteristics; wireless devices; wireless security; Channel estimation; Communication system security; Cryptography; Probes; Protocols; Wireless communication; Oblivious transfer; physical channel characteristics; security;
Journal_Title :
Computers, IEEE Transactions on