支持多密文等值测试的无线体域网聚合签密方案  

Aggregate Signcryption Scheme Supporting Multi-Ciphertext Equality Test for Wireless Body Area Network

作　　者：杨小东 周航 任宁宁 袁森 王彩芬 Yang Xiaodong;Zhou Hang;Ren Ningning;Yuan Sen;Wang Caifen(College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070;College of Big Data and Internet,Shenzhen Technology University,Shenzhen,Guangdong 518118)

机构地区：[1]西北师范大学计算机科学与工程学院,兰州730070 [2]深圳技术大学大数据与互联网学院,广东深圳518118

出　　处：《计算机研究与发展》2023年第2期341-350,共10页Journal of Computer Research and Development

基　　金：国家自然科学基金项目(61662069,61562077);中国博士后科学基金项目(2017M610817);兰州市科技计划基金项目(2013-4-22);西北师范大学青年教师科研能力提升计划基金项目(NWNU-LKQN-14-7)。

摘　　要：无线体域网(wireless body area network,WBAN)技术拥有低时延和高灵活性的特点,在医疗保健、病情监控和紧急救护等领域拥有广阔的应用前景.针对目前WBAN密码方案中存在的证书管理开销过大、不支持多用户检索与多密文等值测试等问题,提出了一种支持多密文等值测试的WBAN聚合签密方案.采用基于身份的签密体制,消除了传统公钥密码方案中的证书管理问题,保证了医疗数据的机密性与可认证性.利用聚合签密技术,降低了多用户环境下对医疗密文进行验证的计算开销.引入多密文等值测试技术,实现了多数据用户同时对多医疗密文的安全检索,提高了多用户环境下密文检索的效率.在随机预言模型下,基于计算性Diffie-Hellman困难问题证明了该方案在适应性选择密文攻击下的单向性.与同类方案相比较,该方案支持更多的安全属性,并具有较低的计算开销.Wireless body area network(WBAN)technology has the characteristics of low latency and high flexibility,and has broad application prospects in the fields of health care,disease monitoring,emergency rescue and so on.However,the existing cryptography schemes for wireless body area network have too much overhead in certificate management,and do not meet the requirements of multi-user retrieval and multi-ciphertext equality test.In order to satisfy these applications,an aggregate signcryption scheme supporting multi-ciphertext equality test in multi-user environment for wireless body area network is proposed.The identity-based signcryption system eliminates the problem of certificate management in the traditional public key cryptography scheme,and ensures the confidentiality and authentication of the medical data.The technology of aggregate signcryption is used to reduce the computation overhead of verification in multi-user environment.By introducing the technology of multi-ciphertext equality test,our scheme realizes that multiple data users can safely retrieve multiple medical ciphertexts at the same time,which improves the efficiency of ciphertext retrieval in multi-user environment.Under the random oracle model,the proposed scheme is proved to achieve one-way against adaptive chosen ciphertext attack based on the computational Diffie-Hellman problem.Compared with the similar schemes,the proposed scheme supports more security properties and has lower computational overhead.

关 键 词：无线体域网 多用户环境 多密文等值测试 聚合签密 基于身份的签密 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]