面向物联网搜索技术的高效访问控制方案  

Efficient Access Control Scheme for Internet of Things Search Technology

作　　者：章园园 秦岭 ZHANG Yuan-yuan;QIN Ling(School of Computer Science and Technology,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京工业大学计算机科学与技术学院

出　　处：《计算机科学》2019年第8期194-200,共7页Computer Science

摘　　要：物联网搜索技术在日常生活中有着广泛应用,但由于物联网搜索引擎的开放性和搜索后台的不完全可信性,存储于搜索后台的信息存在严重的安全问题。针对该问题,提出一种安全、高效的支持密文搜索的属性基访问控制方案。在数据保护方面,为了确保用户属性信息和数据的安全,使用了访问策略部分隐藏和属性授权机构去中心化等方法,并且使用密文定长的方式提高算法效率和节约存储空间。同时,提出一种支持策略对比的属性撤销方案,降低了传统撤销方案中的计算复杂度,提高了重加密效率。在密文搜索方面,引入超级节点并使用混合索引的方式提高了检索效率。实验分析表明,该方案高效地解决了物联网搜索技术中的安全问题。Internet of Things search technology is widely used in daily life,however,due to the openness of the Internet of Things search engine and the incomplete credibility of the search center,information stored in the search background has serious security issues.This paper proposed a secure and efficient attribute-based access control scheme for suppor-ting ciphertext search to solve this problem.In terms of data protection,in order to ensure the security of user attribute information and data,access policy partial hiding and attribute authority decentralization are used.Besides,ciphertext fixed length is used to improve algorithm efficiency and save storage space.At the same time,this paper proposed an attribute revocation scheme that supports policy comparison,which can reduce the computational complexity in the traditional revocation scheme and improve the efficiency of re-encryption.In the ciphertext search,the super peer is introduced and the hybrid index is used to improve the retrieval efficiency.The analysis results show that the solution effectively solves the security problem in the Internet of Things search technology.

关 键 词：物联网搜索技术 访问策略部分隐藏 属性撤销 属性授权机构 密文搜索 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]