基于同态加密和区块链技术的车联网隐私保护方案

doi:10.11959/j.issn.2096-109x.2020011

网络与信息安全学报 ›› 2020, Vol. 6 ›› Issue (1): 46-53.doi: 10.11959/j.issn.2096-109x.2020011

所属专题：区块链

基于同态加密和区块链技术的车联网隐私保护方案

王瑞锦^1,²(),唐榆程¹,张巍琦¹,张凤荔^1,²

¹ 电子科技大学信息与软件工程学院，四川成都 610054
² 网络与数据安全四川省重点实验室，四川成都 610054

修回日期:2020-01-17 出版日期:2020-02-15 发布日期:2020-03-23
作者简介:王瑞锦（1980- ），男，甘肃天水人，博士，电子科技大学副教授，主要研究方向为信息安全、隐私保护和区块链|唐榆程（1996- ），男，四川南充人，电子科技大学硕士生，主要研究方向为区块链和隐私保护|张巍琦（1995- ），男，陕西宝鸡人，电子科技大学硕士生，主要研究方向为知识图谱、数据挖掘和数据可视化|张凤荔（1963- ），女，河南郑州人，博士，电子科技大学教授、博士生导师，主要研究方向为大数据安全、隐私保护和区块链
基金资助:
国家自然科学基金资助项目(61802033);国家自然科学基金资助项目(61472064);国家自然科学基金资助项目(61602096);四川省科技计划基金资助项目(2018GZ0087);四川省科技计划基金资助项目(2019YJ0543);博士后基金资助项目(2018M643453);广东省国家重点实验室基金资助项目(2017B030314131);网络与数据安全四川省重点实验室开放课题基金资助项目(NDSMS201606)

Privacy protection scheme for internet of vehicles based on homomorphic encryption and block chain technology

Ruijin WANG^1,²(),Yucheng TANG¹,Weiqi ZHANG¹,Fengli ZHANG^1,²

¹ School of Information and Software Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China
² Network and Data Security Key Laboratory of Sichuan Province,Chengdu 610054,China

Revised:2020-01-17 Online:2020-02-15 Published:2020-03-23
Supported by:
The National Natural Science Foundation of China(61802033);The National Natural Science Foundation of China(61472064);The National Natural Science Foundation of China(61602096);Sichuan Science and Technology Plan(2018GZ0087);Sichuan Science and Technology Plan(2019YJ0543);Chinese Postdoctoral Science Foundation(2018M643453);Guangdong Provincial Key Laboratory Project(2017B030314131);Network and Data Security Key Laboratory of Sichuan Province Open Issue(NDSMS201606)

摘要/Abstract

摘要：

为了解决传统车联网设备安全性相对较低可能威胁到用户隐私的问题，提出了一种基于同态加密和区块链技术的车联网隐私保护方案。此方案将由二级节点组成的验证服务添加到所提模型中，以实现模型中角色的权限控制。为了记录车联网设备信息，设计基于同态加密（HEBDS）新的块数据结构，使隐私数据可以经过 Paillier 加密算法处理后再写入区块，并由获得记账权的网关节点写入区块链网络。该方案实现了数据在密文状态下的处理，弥补了区块链网络中全部数据公开的不足。通过对该方案的安全性分析，证明此方案具有不可伪造、隐私数据安全等特性。该方案通过对隐私数据的同态加密处理再上传区块链网络，实现隐私数据以密文状态分发、共享和计算，比传统车联网模型更能有效保护用户隐私。

关键词: 区块链, 同态加密, 车联网, 隐私保护

Abstract:

In order to solve the problem that the security of traditional internet of vehicles devices is relatively low,which may threaten the privacy of users,a privacy protection scheme based on homomorphic encryption and block chain technology was proposed.This scheme added the authentication service composed of two level nodes to the proposed model to realize the permission control of roles in the model.In order to record the information of the internet of vehicles devices,a new block data structure based on homomorphic encryption (HEBDS) was proposed,which enabled the privacy data to be written into the block after being processed by the Paillier encryption algorithm,and then written into the blockchain network by the gateway node obtaining the accounting right.This scheme realized the data processing in ciphertext state,and made up for the shortage of all data disclosure in blockchain network.Through the analysis of the security of the scheme,it is proved that the scheme has the characteristics of unforgeability and privacy data security.Through homomorphic encryption of privacy data and upload to blockchain network,the scheme can distribute,share and calculate privacy data in ciphertext state,which can protect customer privacy more effectively than traditional internet of vehicles model.

Key words: blockchain, homomorphic encryption, internet of vehicle, privacy protection

中图分类号:

TP393

王瑞锦,唐榆程,张巍琦,张凤荔. 基于同态加密和区块链技术的车联网隐私保护方案[J]. 网络与信息安全学报, 2020, 6(1): 46-53.

Ruijin WANG,Yucheng TANG,Weiqi ZHANG,Fengli ZHANG. Privacy protection scheme for internet of vehicles based on homomorphic encryption and block chain technology[J]. Chinese Journal of Network and Information Security, 2020, 6(1): 46-53.

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参考文献 19

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网关节点	行驶里程/公里	停车缴费金额/元	燃油流量/升
Gi_1	600	150	70
Gi_2	800	220	80
Gi_3	1 000	310	90
#	#	#	#
Gi_50	2 000	840	130

网关节点	行驶里程/公里	停车缴费金额/元	燃油流量/升
Gi_1	7263129731273912637021381237980207 9812630283791232198362170692092713 92136270361237632106217931	2653783173189267636734906726351038 1003762731239389403189239230189187 19301803178210319392837131	2653783173189267636734906726351038 1003762731239389403189239230189187 19301803178210319392837131
Gi_2	8731293710203964005487379812791078 1264981798126498174981708916238012 73891273981641647189130065	8398837810007382662918173219882738 7913077887783278738748710001237271 02739973287031023702378101	3092329040321390324128448717237130 3110219331378454536161819773281918 02103131737137813783912033
Gi_3	2721637812631961400912892100392817 2174672391294984017017037219831283 12312312312309	2093082310989312928312981098219832 1378211816166513727232789182388781 20012710231636	5256351820203782837118382272647197 8316191072137817200073818327182301 82181021811882
#	#	#	#
Gi_50	4090803291789217481671389182361923 7897412767127938763913891298382198 12941987972082	7398162736178713100192893213912823 7732728378746801012721029830210983 92893102018391	7610081023912376345546814183717300 3171873812637163714732378459589319 31621772900621

z	q=0.1	q=0.3
z=1	0.20458727394278242	0.627749109982254
z=2	0.05097789283933862	0.4457170995239838
z=3	0.013172241678896482	0.3245841018204811
z=4	0.0034552434664851736	0.2391268577972393
z=5	0.0009136821879279122	0.1773523113609451
z=10	0.0000012612862196786	0.04166047996897915

基于同态加密和区块链技术的车联网隐私保护方案

Privacy protection scheme for internet of vehicles based on homomorphic encryption and block chain technology

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