体域网中一种基于无线信道特征的密钥生成方法研究

doi:10.11959/j.issn.1000-0801.2021260

摘要/Abstract

摘要：

无线体域网是以人体为中心的无线网络，受其有限的资源和计算能力的约束，如何保证无线体域网通信节点间共享密钥是当前面临的一大挑战。提出了一种基于超宽带无线体域网信道特征的密钥生成机制，利用超宽带信道多径相对时延与平均时延的差值量化生成密钥，降低了密钥不匹配率，同时引入辅助节点，提高了密钥生成速率。仿真结果表明，该机制能够在兼顾密钥一致性的前提下，获得较高的密钥生成速率并保证密钥的安全性。

关键词: 信道互易性, 密钥生成, 无线体域网, 超宽带

Abstract:

Wireless body area network (WBAN) is a human-centered wireless network.With limitations of power and computation capabilities of WBAN, the significant challenge of ensuring security is how to generate a shared key between two entities based on a lightweight symmetric cryptography.To investigate this issue, a secret key generation scheme in ultra-wideband (UWB) WBAN was designed.In this scheme, the difference of multipath relative delay and its average value were chosen as common random source to reduce key mismatch probability.Furthermore, with the aid of relay, secret key generation rate could be increased.Simulation and test results demonstrate that the proposed scheme can achieve a good tradeoff between key match probability and key generation rate.Furthermore, security analysis of the scheme was also provided to validate its feasibility.

Key words: channel reciprocity, secret key generation, WBAN, UWB

中图分类号:

TN915.81

黄晶晶. 体域网中一种基于无线信道特征的密钥生成方法研究[J]. 电信科学, 2021, 37(12): 32-41.

Jingjing HUANG. Research on secret key generation based on wireless channel characteristics in body area network[J]. Telecommunications Science, 2021, 37(12): 32-41.

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参考文献 38

[1]	IEEE B E . IEEE Standard for local and metropolitan area networks part 15.6:wireless body area networks[S]. IEEE, 2012.
[2]	DIFFLE W , H-ELLMAN M , . New directions in cryptography[J]. IEEE Transactions on Information Theory, 1976,22(6): 644-654.
[3]	BLASS E , ZITTERBART M . Efficient implementation of elliptic curve cryptography for wireless sensor networks[R]. Technical report.Universitat Karlsruhe, 2005: 1-16.
[4]	CHERUKURI S , VENKATASUBRAMANIAN K K , GUPTA S K S . Biosec:a biometric based approach for securing communication in wireless networks of biosensors implanted in the human body[C].// Proceedings of Parallel Processing workshops. Piscataway:IEEE Press, 2003: 432-439.
[5]	POON C C Y , ZHANG Y T , BAO S D . A novel biometrics method to secure wireless body area sensor networks for telemedicine and m-health[J]. IEEE Communications Magazine, 2006,44(4): 73-81.
[6]	VENKATASUBRAMANIAN K K , BANERJEE A , GUPTA S K S . EKG-based key agreement in Body Sensor Networks[C]// Proceedings of IEEE INFOCOM Workshops 2008. Piscataway:IEEE Press, 2008: 1-6.
[7]	OVILLA-MARTINEZ B , ODíAZ-PéREZ A , GARZA-SALDA?A J J , . Key establishment protocol for a patient monitoring system based on PUF and PKG[C]// Proceedings of 2013 10th International Conference and Expo on Emerging Technologies for a Smarter World (CEWIT). Piscataway:IEEE Press, 2013: 1-6.
[8]	VENKATASUBRAMANIAN K K , BANERJEE A , GUPTA S K S . PSKA:usable and secure key agreement scheme for body area networks[J]. IEEE Transactions on Information Technology in Biomedicine, 2010,14(1): 60-68.
[9]	WU Y , Sun Y M , ZHAN L ,et al. Low mismatch key generation based on wavelet-transform trend and fuzzy vault in body area network[EB]. 2013.
[10]	龙航, 袁广翔, 王静 ,等. 物理层安全技术研究现状与展望[J]. 电信科学, 2011,27(9): 60-65.
	LONG H , YUAN G X , WANG J ,et al. Physical layer security:survey and Future Chinese full text[J]. Telecommunications Science, 2011,27(9): 60-65.
[11]	GOLDSMITH A . Wireless Communications[M]. Manchester UK: Cambridge University Press, 2005: 108-109.
[12]	周百鹏 . 基于无线信道特征提取的密钥生成技术研究[D]. 郑州:解放军信息工程大学, 2011.
	ZHOU B P . Research on secret key generation utilizing the wireless channel characteristics[D]. Zhengzhou:PLA Information Engineering University, 2011.
[13]	HASSAN A A , STARK W E , HERSHEY J E ,et al. Cryptographic key agreement for mobile radio[J]. Digital Signal Processing, 1996,6(4): 207-212.
[14]	WANG Q , SU H , REN K ,et al. Fast and scalable secret key generation exploiting channel phase randomness in wireless networks[C]// 2011 Proceedings IEEE INFOCOM. Piscataway:IEEE Press, 2011: 1422-1430.
[15]	WANG Q , XU K H , REN K . Cooperative secret key generation from phase estimation in narrowband fading channels[J]. IEEE Journal on Selected Areas in Communications, 2012,30(9): 1666-1674.
[16]	AZIMI-SADJADI B , KIAYIAS A , MERCADO A ,et al. Robust key generation from signal envelopes in wireless networks[C]// Proceedings of the 14th ACM conference on Computer and communications security - CCS '07. New York:ACM Press, 2007: 401-410.
[17]	MATHUR S , TRAPPE W , MANDAYAM N ,et al. Radio-telepathy:extracting a secret key from an unauthenticated wireless channel[C]// Proceedings of the 14th ACM international conference on Mobile computing and networking - MobiCom '08. New York:ACM Press, 2008: 128-139.
[18]	JANA S , PREMNATH S N , CLARK M ,et al. On the effectiveness of secret key extraction from wireless signal strength in real environments[C]// Proceedings of the 15th annual international conference on Mobile computing and networking - MobiCom '09. New York:ACM Press, 2009: 321-332.
[19]	AONO T , HIGUCHI K , OHIRA T ,et al. Wireless secret key generation for fading wireless channels[J]. IEEE Trans on Antennas and Propagation, 2005,53(11): 3776-3784.
[20]	YE C X , MATHUR S , REZNIK A ,et al. Information-theoretically secret key generation for fading wireless channels[J]. IEEE Transactions on Information Forensics and Security, 2010,5(2): 240-254.
[21]	REN K , SU H , WANG Q . Secret key generation exploiting channel characteristics in wireless communications[J]. IEEE Wireless Communications, 2011,18(4): 6-12.
[22]	WILSON R , TSE D , SCHOLTZ R A . Channel identification:secret sharing using reciprocity in ultrawideband channels[J]. IEEE Transactions on Information Forensics and Security, 2007,2(3): 364-375.
[23]	GHOREISHI MADISEH M , HE S , MCGUIRE M L ,et al. Verification of secret key generation from UWB channel observations[C]// Proceedings of 2009 IEEE International Conference on Communications. Piscataway:IEEE Press, 2009: 1-5.
[24]	MADISEH M G , MCGUIRE M L , NEVILLE S S ,et al. Secret key generation and agreement in UWB communication channels[C]// Proceedings of IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference. Piscataway:IEEE Press, 2008: 1-5.
[25]	HANLEN L W , SMITH D , ZHANG J A ,et al. Key-sharing via channel randomness in narrowband body area networks:is everyday movement sufficient?[C]// Proceedings of Proceedings of the 4th International ICST Conference on Body Area Networks. ICST, 2009: 1-8.
[26]	ALI S T , SIVARAMAN V , OSTRY D . Secret key generation rate vs.reconciliation cost using wireless channel characteristics in body area networks[C]// Proceedings of 2010 IEEE/IFIP International Conference on Embedded and Ubiquitous Computing. Piscataway:IEEE Press, 2010: 644-650.
[27]	ALI S T , SIVARAMAN V , OSTRY D . Zero reconciliation secret key generation for body-worn health monitoring devices[C]// Proceedings of the fifth ACM conference on Security and Privacy in Wireless and Mobile Networks - WISEC '12. New York:ACM Press, 2012: 16-18.
[28]	TSOURI G R , WILCZEWSKI J . Reliable symmetric key generation for body area networks using wireless physical layer security in the presence of an on-body eavesdropper[C]// ISABEL '11:Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies. 2011: 1-6.
[29]	YAO L J , ALI S T , SIVARAMAN V ,et al. Decorrelating secret bit extraction via channel hopping in body area networks[C]// Proceedings of 2012 IEEE 23rd International Symposium on Personal,Indoor and Mobile Radio Communications - (PIMRC). Piscataway:IEEE Press, 2012: 1454-1459.
[30]	YAO L J , ALI S , SIVARAMAN V ,et al. Improving secret key generation performance for on-body devices[C]// Proceedings of Proceedings of the 6th International ICST Conference on Body Area Networks. ACM, 2011: 19-22.
[31]	ALI A , KHAN F A . A broadcast-based key agreement scheme using set reconciliation for wireless body area networks[J]. Journal of Medical Systems, 2014,38(5): 33.
[32]	YAZDANDOOST K Y , SAYRAFIANPOVR K . Channel model for body area network (BAN)[EB]. 2008.
[33]	MOLISCH A F , BALAKRISHNAN K , CASSIOLI D ,et al. IEEE 802.15.4a channel model - final report[EB]. 2004.
[34]	RUKHIN A , SOTA J , NECHVATAL J ,et al. A statistical test suite for random and pseudorandom number generators for cryptographic applications[R]. National Institute of Standards and Technology, 2000.
[35]	DODIS Y , OSTROVSKY R , REYZIN L ,et al. Fuzzy extractors:how to generate strong keys from biometrics and other noisy data[J]. SIAM Journal on Computing, 2008,38(1): 97-139.
[36]	BRASSARD G , SALVAIL L . Secret-key reconciliation by public discussion[M]. Advances in Cryptology — EUROCRYPT ’93. Berlin,Heidelberg: Springer Berlin Heidelberg, 1994: 410-423.
[37]	郑严 . 公开信道密钥协商中的信息协调[D]. 重庆:西南大学, 2009.
	ZHENG Y . Information Reconciliation of Secret key Agreement on Public Channel[D]. Chongqing:Southwest University, 2009.
[38]	LAI L F , LIANG Y B , DU W L . PHY-based cooperative key generation in wireless networks[C]// Proceedings of 2011 49th Annual Allerton Conference on Communication,Control,and Computing (Allerton). Piscataway:IEEE Press, 2011: 662-669.

符号	含义
x (t)	X _t的发送波形
z (t)	Z _t 的发送波形
h_AB(t)	Alice向Bob发送探测序列的信道增益
h_RB(t)	Relay向Bob发送探测序列的信道增益
h_BA(t)	Bob向Alice发送探测序列的信道增益
h_BR(t)	Bob向Relay发送探测序列的信道增益
n _A(t),n_R(t),n_B(t)	均值为0、方差为?²的加性高斯白噪声

仿真参数	数值
相干时间	83.3 ms
中心频率	3.6 GHz
采样率	10 GHz
平均移动速率	1 m/s
多普勒频移	12 Hz
波长	83.3 mm
γ₀	-4.3 dB
Γ	56.6 ns
σ	4.7

测试指标	测试结果P-value
频数	0.34
块内频数	0.14
累积和	0.19
离散傅里叶变换	0.31
游程总数	0.03
块内最长游程	0.12
近似熵	0.34
序列	0.57, 0.46