基于区块链的无线体域网无证书密文等值测试签密方案

doi:10.12263/DZXB.20210855

电子学报

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基于区块链的无线体域网无证书密文等值测试签密方案

杨小东¹, 周航¹, 汪志松¹, 袁森¹, 王彩芬²

^1.西北师范大学计算机科学与工程学院，甘肃兰州 730070
^2.深圳技术大学大数据与互联网学院，广东深圳 518118

收稿日期:2021-07-06 修回日期:2022-02-13 出版日期:2022-07-12
- 作者简介:
- 杨小东男，1981年出生，甘肃甘谷人.现为西北师范大学教授，硕士生导师.主要研究方向为现代密码学和云计算安全.E-mail: y200888@163.com
  周航女，1996年出生，河北承德人.现为西北师范大学计算机科学与工程学院硕士研究生.主要研究方向为密文等值测试.E-mail: 1019164488@qq.com
  汪志松男，1998年出生，江苏盐城人.现为西北师范大学计算机科学与工程学院硕士研究生.主要研究方向为代理重签名.E-mail: 1216053764@qq.com
  袁森女，1994年出生，河南新乡人.现为西北师范大学计算机科学与工程学院硕士研究生.主要研究方向为代理保护签名.E-mail: 1819989234@qq.com
  王彩芬女，1963年出生，河北安国人.现为深圳技术大学大数据与互联网学院教授，博士生导师.主要研究方向为大数据安全.E-mail: wangcaifen@sztu.edu.cn
- 基金资助:
- 国家自然科学基金 (61662069); 中国博士后科学基金 (2017M610817); 兰州市科技计划 (2013-4-22); 西北师范大学青年教师科研能力提升计划 (NWNU-LKQN-14-7)

Blockchain-Based Certificateless Signcryption Scheme with Equality Test for Wireless Body Area Network

YANG Xiao-dong¹, ZHOU Hang¹, WANG Zhi-song¹, YUAN Sen¹, WANG Cai-fen²

^1.College of Computer Science and Engineering，Northwest Normal University，Lanzhou，Gansu 730070，China
^2.College of Big Data and Internet，Shenzhen Technology University，Shenzhen，Guangdong 518118，China

Received:2021-07-06 Revised:2022-02-13 Online:2022-07-12

摘要/Abstract

摘要：

针对无线体域网密码方案中存在的密钥管理、密文检索与依赖可信第三方等问题，本文提出了一种基于区块链的无线体域网无证书密文等值测试签密方案．基于无证书签密机制，解决了传统方案中的密钥托管问题，保证了医疗数据的机密性与可认证性．利用等值测试技术，实现了对云端医疗密文的检索，减少了数据用户对重复数据解密的计算开销．引入区块链与智能合约技术，消除了等值测试操作对可信云服务器的依赖．利用雾节点执行部分解密计算，降低了数据用户解密时的计算开销．在随机预言模型下，基于计算性Diffie-Hellman困难问题证明了本文方案满足单向性．与同类方案相比较，本文方案支持更多的安全属性，并具有较低的计算开销．

关键词: 无线体域网, 区块链, 等值测试, 无证书签密, 雾计算

Abstract:

Aiming at the problems of key management, ciphertext retrieval and dependence on trusted third party, a blockchain-based certificateless signcryption scheme with equality test for wireless body area network is proposed. The certificateless signcryption solves the problem of key escrow and ensures the confidentiality and authentication of medical data. Meanwhile, the equality test technology is used to retrieve the medical ciphertext, which reduces the computational cost of data users to decrypt duplicate data. In addition, blockchain and smart contract are used to eliminate the dependence of trusted cloud servers. The fog nodes perform part of the decryption computation, which reduces the computation overhead of data users. Furthermore, the proposed scheme is proved to achieve one-way based on the computational Diffie-Hellman problem under the random oracle model. Compared with the similar schemes, the proposed scheme supports more security properties and has lower computational overhead.

Key words: wireless body area network, blockchain, equality test, certificateless signcryption, fog computing

中图分类号:

TP309.7

杨小东, 周航, 汪志松, 袁森, 王彩芬. 基于区块链的无线体域网无证书密文等值测试签密方案[J]. 电子学报, DOI: 10.12263/DZXB.20210855.

YANG Xiao-dong, ZHOU Hang, WANG Zhi-song, YUAN Sen, WANG Cai-fen. Blockchain-Based Certificateless Signcryption Scheme with Equality Test for Wireless Body Area Network[J]. Acta Electronica Sinica, DOI: 10.12263/DZXB.20210855.

图/表 5

参考文献 29

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方案	等值测试	去中心化	无证书体制	签密	外包计算
Cagalaban方案^[11]	×	×	×	×	√
Omala方案^[14]	×	×	√	√	×
Ramadan方案^[16]	√	×	×	×	×
本文方案	√	√	√	√	√

方案	等值测试	去中心化	无证书体制	签密	外包计算
Cagalaban方案^[11]	×	×	×	×	√
Omala方案^[14]	×	×	√	√	×
Ramadan方案^[16]	√	×	×	×	×
本文方案	√	√	√	√	√

函数	消耗成本/Gas	实际成本/Ether	成本/美元
Query	196 762	0.000 590 286	0.159 377 22
Update	167 233	0.000 501 699	0.135 458 73
Test	292 250	0.000 876 750	0.236 722 50

函数	消耗成本/Gas	实际成本/Ether	成本/美元
Query	196 762	0.000 590 286	0.159 377 22
Update	167 233	0.000 501 699	0.135 458 73
Test	292 250	0.000 876 750	0.236 722 50

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基于区块链的无线体域网无证书密文等值测试签密方案

Blockchain-Based Certificateless Signcryption Scheme with Equality Test for Wireless Body Area Network

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