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Traceable attribute-based signcryption

Authors

  • Jianghong Wei,

    Corresponding author
    1. Zhengzhou Information Science and Technology Institute, Zhengzhou, China
    2. State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou, China
    • Correspondence: Jianghong Wei, Zhengzhou Information Science and Technology Institute, Zhengzhou 450002, China.

      E-mail: jianghong.wei.xxgc@gmail.com

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  • Xuexian Hu,

    1. Zhengzhou Information Science and Technology Institute, Zhengzhou, China
    2. Trusted Computing and Information Assurance Laboratory, Institute of Software, Chinese Academy of Science, Beijing, China
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  • Wenfen Liu

    1. Zhengzhou Information Science and Technology Institute, Zhengzhou, China
    2. State Key Laboratory of Mathematical Engineering and Advanced Computing, Zhengzhou, China
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ABSTRACT

Signcryption can provide confidentiality and authenticity for many cryptographic applications. In this study, we propose a new efficient attribute-based signcryption scheme. This scheme achieves confidentiality against chosen ciphertext attacks and unforgeability against chosen messages attacks in the selective attribute model. In addition, our scheme enjoys traceability by use of non-interactive witness indistinguishable proofs; that is, the authority can break the anonymity of users when necessary. Compared with previous works, our scheme has advantages in terms of functionality and efficiency simultaneously. Copyright © 2013 John Wiley & Sons, Ltd.

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