5G网络下新的异构签密方案

doi:10.3969/j.issn.1671-1122.2018.11.005

信息网络安全 ›› 2018, Vol. 18 ›› Issue (11): 33-39.doi: 10.3969/j.issn.1671-1122.2018.11.005

5G网络下新的异构签密方案

曹素珍, 郎晓丽(), 刘祥震, 王斐

西北师范大学计算机科学与工程学院,甘肃兰州 730070

收稿日期:2018-06-15 出版日期:2018-11-10 发布日期:2020-05-11
作者简介:
作者简介：曹素珍（1976—）,女,甘肃,副教授,硕士,主要研究方向为公钥密码学和软件安全;郎晓丽（1993—）,女,山东,硕士研究生,主要研究方向为密码学与信息安全;刘祥震（1991—）,男,山东,硕士研究生,主要研究方向为密码学与信息安全;王斐（1992—）,女,山东,硕士研究生,主要研究方向为密码学与信息安全。
基金资助:
国家自然科学基金[61662071,61662069,61462077]

New Heterogeneous Signcryption Scheme under 5G Network

Suzhen CAO, Xiaoli LANG(), Xiangzhen LIU, Fei WANG

College of Computer Science and Engineering, Northwest Normal University, Lanzhou Gansu 730070, China

Received:2018-06-15 Online:2018-11-10 Published:2020-05-11

摘要/Abstract

摘要：

随着5G网络的发展,异构网络逐渐成为5G网络的研究重点。而异构签密方案可以保证不同密码体制下数据之间的机密性与不可伪造性。文章首先对一个无证书密码体制下的签密方案进行安全性分析,指出该方案不满足签名的不可伪造性,即存在恶意的KGC可以对签名进行伪造。为了提高原方案的安全性,文章提出了一种新的签密方案,同时将该方案扩展到传统公钥密码体制到无证书密码体制下的异构网络环境中。该方案克服了原方案存在的安全性问题,保证了传统公钥密码体制到无证书密码体制之间的数据传输安全。最后在随机预言模型下,基于计算性Diffie-Hellman困难问题,证明了该方案的不可伪造性。同时,效率分析表明,该方案具有更好的通信效率与较低的计算代价。

关键词: 异构系统, 签密, KGC, 不可伪造性

Abstract:

With the development of 5G networks, heterogeneous networks have become the research focus of 5G networks. The heterogeneous signcryption scheme can be used to guarantee the confidentiality and unforgeability in different cryptography. A security analysis for a signcryption scheme in certificateless cryptosystem was firstly provided, and the scheme does not satisfy the unforgeability of signatures, because a malicious KGC can forge a signature. Secondly, to enhance security, a new signcryption scheme was proposed, and extends the new scheme to the heterogeneous network environment under the traditional public key cryptosystem to the certificateless cryptosystem. The new schemes can overcome the security weakness of the original schemes, and can also ensures the security of data transmission between the traditional public key cryptographic and the certificateless cryptographic. In the end, in the random oracle model, based on the computational Diffie-Hellman problem, the unforgeability of the new scheme is proved, and the efficiency analysis shows that the proposed scheme has better communication efficiency and lower computational cost.

Key words: heterogeneous system, signcryption, KGC, unforgeability

中图分类号:

TP309

曹素珍, 郎晓丽, 刘祥震, 王斐. 5G网络下新的异构签密方案[J]. 信息网络安全, 2018, 18(11): 33-39.

Suzhen CAO, Xiaoli LANG, Xiangzhen LIU, Fei WANG. New Heterogeneous Signcryption Scheme under 5G Network[J]. Netinfo Security, 2018, 18(11): 33-39.

图/表 2

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符号	描述	时间/ms
A	点加运算耗费的时间	0.023
m	点乘运算耗费的时间	3.382
e	双线性对运算耗费的时间	3.711
H	Hash函数映射到点耗费的时间	6.720

方案	签密/ms	解签密/ms	是否异构
文献[17]方案	6m+e+4H+7A=51.044	3m+5e+4H+2A=55.627	否
本文方案	4m+2H+2A=27.014	3m+2H+3A=23.655	是

5G网络下新的异构签密方案

New Heterogeneous Signcryption Scheme under 5G Network

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