基于生物特征的可搜索加密

doi:10.6040/j.issn.1671-9352.0.2015.269

摘要/Abstract

摘要： 随着云时代的到来,越来越多的用户将自己的数据保存到云服务器中,既使用方便又减少了自己存储所带来的费用。但云服务器不一定安全可靠,因此,为保障数据的安全性,数据常以密文的形式储存在云服务器中。可搜索加密重点专注于搜索过程的安全可靠及搜索效率,保证用户能够保密地进行密文数据的检索,同时又不影响其使用体验。生物密码相对于传统密码更便于携带且不会遗忘。构造基于生物特征的可搜索加密新体制,基于不同的困难问题假设给出两种基于生物特征的可搜索加密构造方案。相对于已有的搜索加密方案,基于生物特征的可搜索加密方案将生物特征和可搜索加密结合起来,提高了方案的灵活性、实用性和安全性。本文所提方案满足选择关键词不可区分和限门不可区分的安全性。

关键词: 可搜索加密, 生物特征, 关键词, 双线性对

Abstract: With the advent of the cloud era, more and more users would like to store their data to the cloud server, so it was convenient to use and reduce the storage cost. Since cloud server might not be enough safe and reliable, in order to keep the security, data were usually stored in encrypted form in the cloud. Searchable encryption focused on the safety, reliability, and efficiency of search process, ensured that the user can support keyword search over encrypted data, and did not affect its use experience at the same time. Compared with traditional passwords, biometrics passwords were more convenient to be taken and hard to be forgotten. This paper would construct a new searchable encryption system based on biometrics and proposed two schemes based on different difficult problems. Compared with the existing searchable encryption schemes, with combining biometrics, our new schemes improved the flexibility, practicability and security. In this paper, our scheme satisfied the safety of indistinguishability of chosen keywords and trapdoor.

Key words: biometric, searchable encryption, keyword, bilinear pairing

中图分类号:

TP309

朱斌瑞,秦静,韩斐. 基于生物特征的可搜索加密[J]. 山东大学学报（理学版）, 2016, 51(5): 78-86.

ZHU Bin-rui, QIN Jing, HAN Fei. Searchable encryption scheme based on biometrics[J]. JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE), 2016, 51(5): 78-86.

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