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| Security Analysis and Improvement of Mutual Signcryption Schemes under Heterogeneous Systems |
| ZHANG Yulei WANG Huan LIU Wenjing WANG Caifen |
| (College of Computer Science and Engineering, Northwest Normal University, Lanzhou 730070, China) |
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Abstract Heterogeneous signcryption can be used to guarantee the confidentiality and unforgeability in the different cryptography. In 2016, between traditional public key cryptography and certificateless public key cryptography, the mutual signcryption schemes including PCHS and CPHS were proposed by Liu et al. However, via the security analysis, it is shown that the above schemes are not secure. Firstly, the processes of attack performed by the second type of adversary are described. Secondly, the possible reasons why the second type of adversary can perform these attacks are analyzed. In the end, the original schemes are improved. The improved schemes can overcome the security weakness of the original schemes, and can also ensure the security of data transmission between traditional public key cryptographic and certificateless public key cryptography.
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Received: 06 March 2017
Published: 30 June 2017
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| Fund:The National Natural Science Foundation of China (61163038, 61262056), The Higher Educational Scientific Research Foundation of Gansu Province of China (2015B-220, 2013A-014), The Young Teachers’ Scientific Research Ability Promotion Program of Northwest Normal University (NWNU- LKQN-14-7) |
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Corresponding Authors:
ZHANG Yulei
E-mail: zhangyl@nwnu.edu.cn
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