电子学报2017，Vol.45Issue(11)：2715-2720,6.DOI:10.3969/j.issn.0372-2112.2017.11.019
一种支持树形访问结构的属性基可净化签名方案
An Attribute-Based Sanitizable Signature Supporting Dendritic Access Structure
摘要
Abstract
In the Electronic Health Record system,users update their health data frequendy.If users keep the authentication of these data with the signature scheme in existence,it will lead to the leakage of their identity privacy and huge computation cost.Aiming at tackling the problems above,we propose a novel scheme called attribute-based sanitizable signature supporting dendritic access structure which obfuscates the user identity with attribute sets and introduces an authorized semitrust third-party—sanitizer.The security analysis demonstrates that our scheme achieves the anonymity of users and is unforgeable under selective-predicate chosen-message attack in the standard model.Through comparison,our scheme not only reduces the signing computation overhead of users,but also supports the dendritic access structure which can provide flexibly fine-grained access control under large-scale attribute sets.关键词
基于属性的签名/可净化签名/电子医疗档案/标准模型/不可伪造性/匿名性Key words
attribute-based signature/sanitizable signature/electronic health records/standard model/unforgeable/anonymity分类
信息技术与安全科学引用本文复制引用
莫若,马建峰,刘西蒙,张涛..一种支持树形访问结构的属性基可净化签名方案[J].电子学报,2017,45(11):2715-2720,6.基金项目
国家自然基金(No.U1135002,No.U1405255) （No.U1135002,No.U1405255）
国家863高技术研究发展计划(No.2015AA016007,No.2015AA017203) （No.2015AA016007,No.2015AA017203）
