通信学报2017，Vol.38Issue(11)：54-64,11.DOI:10.11959/j.issn.1000-436x.2017219
新的格上基于身份的分级加密方案
Novel hierarchical identity-based encryption scheme from lattice
摘要
Abstract
Aiming at the high complexity in user's private key extraction and large expansion ratio of trapdoor size in previous hierarchical identity-based encryption (HIBE) schemes, a new HIBE scheme was proposed. The implicit extension method to improve preimage sampling algorithm was used, and then combined the improved algorithm with MP12 trapdoor delegation algorithm to construct an efficient HIBE user's private key extraction algorithm. Finally, the new ex-traction algorithm and the Dual-LWE algorithm was integrated to complete the scheme. Compared with the similar schemes, the efficiency of the proposed scheme was improved in system establishment and user's private key extraction stage, the trapdoor size grows only linearly with the system hierarchical depth, and the improved preimage sample algorithm partly solves the Gaussian parameter increasing problem induced by MP12 trapdoor delegation. The security of the proposed scheme strictly reduces to the hardness of decisional learning with errors problem in the st and ard model.关键词
格/基于身份的分级加密/陷门派生/标准模型/容错学习Key words
lattice/hierarchical identity-based encryption/trapdoor delegation/standard model/learning with error分类
信息技术与安全科学引用本文复制引用
叶青,胡明星,汤永利,刘琨,闫玺玺..新的格上基于身份的分级加密方案[J].通信学报,2017,38(11):54-64,11.基金项目
"十三五"国家密码发展基金资助项目(No.MMJJ20170122) （No.MMJJ20170122）
国家自然科学基金资助项目(No.61300216) （No.61300216）
河南省科技厅基金资助项目(No.142300410147) （No.142300410147）
河南省教育厅基金资助项目(No.18A413001,No.16A520013) （No.18A413001,No.16A520013）
河南理工大学博士基金资助项目(No.B2014-044,No.B2016-36) The "13th Five-Year" National Crypto Development Foundation (No.MMJJ20170122),The National Natural Science Foundation of China (No.61300216),The Project of Science and Technology Department of Henan Province (No.142300410147),The Project of Education Department of Henan Province (No.18A413001,No.16A520013),Doctoral Fund of Henan Polytechnic University (No.B2014-044,No.B2016-36) （No.B2014-044,No.B2016-36）
