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A CCA-secure key-policy attribute-based proxy re-encryption in the adaptive corruption model for dropbox data sharing system

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Abstract

The notion of attribute-based proxy re-encryption extends the traditional proxy re-encryption to the attribute-based setting. In an attribute-based proxy re-encryption scheme, the proxy can convert a ciphertext under one access policy to another ciphertext under a new access policy without revealing the underlying plaintext. Attribute-based proxy re-encryption has been widely used in many applications, such as personal health record and cloud data sharing systems. In this work, we propose the notion of key-policy attribute-based proxy re-encryption, which supports any monotonic access structures on users’ keys. Furthermore, our scheme is proved against chosen-ciphertext attack secure in the adaptive model.

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Notes

  1. Suppose\((M,\rho )\) and\((M',\rho ')\) are two access structures. For any attribute\(\gamma \), if\(\gamma \) satisfies\((M,\rho )\), then\(\gamma \) does not satisfy\((M',\rho ')\). For such a case, from now on, we say that\((M,\rho )\) and\((M',\rho ')\) are disjoint.

  2. As in [16], derivative of\(C^*\) is defined as:

    1. (1)

      \(C^*\) is a derivative of itself;

    2. (2)

      If\({\mathcal {A}}\) has issued a re-encryption key query\({\mathcal {O}}_{rk}((M^*,\rho ^*),(M',\rho '))\) to get\(rk_{(M^*,\rho ^*)\rightarrow (M',\rho ')}\), and obtained\(C_R=ReEnc(PP,C^*,rk_{(M^*,\rho ^*)\rightarrow (M',\rho ')})\), then\(C_R\) is a derivative of\(C^*\);

    3. (3)

      If\({\mathcal {A}}\) has issued a re-encryption query\({\mathcal {O}}_{re}((M^*,\rho ^*),(M',\rho '),C^*)\) to get\(C_R\), then\(C_R\) is a derivative of\(C^*\).

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Nos. 61702236, 61672270, 61602216, 61272083, 61300236), the National Natural Science Foundation of Jiangsu (No. BK20130809), the National Science Foundation for Post-doctoral Scientists of China (No. 2013M530254), the National Science Foundation for Post-doctoral Scientists of Jiangsu (No. 1302137C), and the China Postdoctoral Science special Foundation (No. 2014T70518 ), the Open Fund of State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences (No. 2015-MSB-10), the Changzhou Sci & Tech Program (Grant No.CJ20179027).

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Authors and Affiliations

  1. Department of Computer Engineering, Jiangsu University of Technology, Zhenjiang, China

    Chunpeng Ge

  2. State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China

    Chunpeng Ge

  3. School of Computing and Information Technology, Institute of Cybersecurity and Cryptology, University of Wollongong, Wollongong, Australia

    Willy Susilo

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

    Liming Fang & Jiandong Wang

  5. Department of Electrical and Computer Engineering, New Jersey Institute of Technology, New Jersey, USA

    Yunqing Shi

Authors
  1. Chunpeng Ge

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  2. Willy Susilo

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  3. Liming Fang

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  4. Jiandong Wang

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  5. Yunqing Shi

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Corresponding author

Correspondence toWilly Susilo.

Additional information

Communicated by R. Steinwandt.

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Ge, C., Susilo, W., Fang, L.et al. A CCA-secure key-policy attribute-based proxy re-encryption in the adaptive corruption model for dropbox data sharing system.Des. Codes Cryptogr.86, 2587–2603 (2018). https://doi.org/10.1007/s10623-018-0462-9

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