Technology of Information Security
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3136-3140

Analysis and improvement of mIBS scheme

Chen Ming
Leng Jianhua
School of Mathematics & Computer Science, Yichun University, Yichun Jiangxi 336000, China

Abstract

Wei Songjie et al. proposed an identity-based signature scheme(mIBS), and used a security mediator(SEM) node to realize real-time revocation of entity identity in the mIBS scheme. The SEM held a part of the signature key, and generated a signature by working collaboratively with a signer. This paper analyzed the security of the mIBS scheme, found it had serious security flaws, and presented a specific attack instance. In the attack instance, a signer could stole the key held by the SEM through once normal signature interaction with a SEM, and then bypassed the SEM to implement a signature independently. This paper proposed an improved signature scheme(mIBSG). The mIBSG scheme remedied the security flaws of the original scheme by randomizing the private key held by the SEM. Further, this paper established a security model for mIBS scheme, named mEUF-CMIA, and defined a new type of adversary that simulated malicious but legitimate signers. The new adversary had the power to generate a forged signature independently through asking random oracles. Based on the new security model, this paper deduced the unforgeability of the mIBSG scheme as solving the CDH problem on a cyclic group. Comparative analysis show that the mIBSG scheme achieves provable security with a small calculate efficiency loss. The mIBSG scheme can be used to build an IBC-based cross-domain authentication system.

Foundation Support

国家自然科学基金资助项目(61662083)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2022.03.0130
Publish at: Application Research of Computers Printed Article, Vol. 39, 2022 No. 10
Section: Technology of Information Security
Pages: 3136-3140
Serial Number: 1001-3695(2022)10-040-3136-05

Publish History

[2022-05-30] Accepted Paper
[2022-10-05] Printed Article

Cite This Article

陈明, 冷建华. 一种mIBS方案的分析与改进 [J]. 计算机应用研究, 2022, 39 (10): 3136-3140. (Chen Ming, Leng Jianhua. Analysis and improvement of mIBS scheme [J]. Application Research of Computers, 2022, 39 (10): 3136-3140. )

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  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

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