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Certificateless Identity-Concealed Authenticated Encryption Under Multi-KGC

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Information Security and Cryptology (Inscrypt 2019)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 12020))

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Abstract

In the certificateless cryptography, users generate their partial private key and the Key Generation Centre (KGC) generates the other partial private key of users. In some certificateless application scenarios, a sender might want to send messages to a receiver which registers with another KGC. Unfortunately, no certificateless authenticated encryption scheme under multi-KGC has been put forward so far. In this work, we propose the first certificateless identity-concealed authenticated encryption scheme under multi-KGC. Our proposed scheme hides the public identity information of both sender and receiver from any third party. We build a security model for certificateless identity-concealed authenticated encryption scheme under multi-KGC. We prove that our proposed scheme is secure under the random oracle model. We also present a variant of our proposed scheme which supports bilateral identity-concealed authentication key exchange.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China under Grant 61872060, the National Key R&D program of China under Grant 2017YFB0802000, the National Natural Science Foundation of China under Grant 61370203, Sichuan Science and Technology Program under Grant 2019YFS0068 and the National Natural Science Foundation of China under Grant 61902327.

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Authors and Affiliations

  1. University of Electronic Science and Technology of China, Chengdu, China

    Chuang Li & Chunxiang Xu

  2. Fudan University, Shanghai, China

    Yunlei Zhao

  3. Hangzhou Normal University, Hangzhou, China

    Kefei Chen

  4. Southwest Petroleum University, Chengdu, China

    Xiaojun Zhang

Authors
  1. Chuang Li
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  2. Chunxiang Xu
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  3. Yunlei Zhao
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  4. Kefei Chen
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  5. Xiaojun Zhang
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Corresponding author

Correspondence to Chunxiang Xu .

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Editors and Affiliations

  1. College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China

    Zhe Liu

  2. Computer Science Department, Columbia University, New York, NY, USA

    Moti Yung

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Li, C., Xu, C., Zhao, Y., Chen, K., Zhang, X. (2020). Certificateless Identity-Concealed Authenticated Encryption Under Multi-KGC. In: Liu, Z., Yung, M. (eds) Information Security and Cryptology. Inscrypt 2019. Lecture Notes in Computer Science(), vol 12020. Springer, Cham. https://doi.org/10.1007/978-3-030-42921-8_23

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  • DOI: https://doi.org/10.1007/978-3-030-42921-8_23

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-42920-1

  • Online ISBN: 978-3-030-42921-8

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