面向网约车服务有效的隐私增强方案  

Efficient Privacy-Enhanced Scheme for Online Transportation Network Services

作　　者：曹承龙 朱晓玲[2] CAO Chenglong;ZHU Xiaoling(Department of Xueyan Trade,Anhui Finance and Trade Vocational College,Hefei 230601,Anhui,China;School of Computer and Information,Hefei University of Technology,Hefei 230009,Anhui,China)

机构地区：[1]安徽财贸职业学院雪岩贸易学院,安徽合肥230601 [2]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《武汉大学学报（理学版）》2018年第5期423-430,共8页Journal of Wuhan University:Natural Science Edition

基　　金：安徽省自然科学基金项目(1608085MF141);安徽省社会科学创新发展研究重大课题(2017ZD005)资助项目

摘　　要：针对网约车服务存在的安全与隐私泄露威胁问题,基于电子现金与Hash链,设计了面向网约车服务的隐私保护方案.该方案将第三方转账的支付模式转变为乘客支付电子现金,提出部分盲签名协议以增强乘客隐私并确保电子现金不可伪造,构建轻量级可信链,使电子现金可分、份额不可重用以提高方案的实用性.分析表明：该方案具有较少的通信开销,并提供增强的隐私保护,即使面对网约车平台和电子现金管理中心,乘客也是匿名,而且其身份与位置不可关联.There have existed a great number of security and privacy threats in online transportation network service.Focusing on the threats,aprivacy protection scheme was designed,where payment pattern was changed from third-party payment to e-cash payment.A partially blind signature protocol was proposed to enhance passenger privacy and ensure that e-cash was unforgeable.In order to improve the practicability of the scheme,a lightweight trusted chain was constructed,in which e-cash was divisible and its share was non-reusable.The analysis shows that the scheme has small communication cost,and meanwhile it provides enhanced privacy protection：apassenger is anonymous,and his identity is not relevant to his position even in the presence of online transportation network platform and e-cash authority.

关 键 词：网约车 电子现金 部分盲签名 可信Hash链 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]