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Security and Privacy in Communication Networks. 11th International Conference, SecureComm 2015, Dallas, TX, USA, October 26-29, 2015, Revised Selected Papers

Research Article

Ciphertext-Policy Attribute-Based Encryption with User and Authority Accountability

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  • @INPROCEEDINGS{10.1007/978-3-319-28865-9_27,
        author={Xing Zhang and Cancan Jin and Cong Li and Zilong Wen and Qingni Shen and Yuejian Fang and Zhonghai Wu},
        title={Ciphertext-Policy Attribute-Based Encryption with User and Authority Accountability},
        proceedings={Security and Privacy in Communication Networks. 11th International Conference, SecureComm 2015, Dallas, TX, USA, October 26-29, 2015, Revised Selected Papers},
        proceedings_a={SECURECOMM},
        year={2016},
        month={2},
        keywords={Attribute-Based Encryption User accountability Authority accountability White-box model},
        doi={10.1007/978-3-319-28865-9_27}
    }
    
  • Xing Zhang
    Cancan Jin
    Cong Li
    Zilong Wen
    Qingni Shen
    Yuejian Fang
    Zhonghai Wu
    Year: 2016
    Ciphertext-Policy Attribute-Based Encryption with User and Authority Accountability
    SECURECOMM
    Springer
    DOI: 10.1007/978-3-319-28865-9_27
Xing Zhang1,*, Cancan Jin1,*, Cong Li1,*, Zilong Wen1,*, Qingni Shen1,*, Yuejian Fang1,*, Zhonghai Wu1,*
  • 1: Peking University
*Contact email: novostary@163.com, jincancan1992@126.com, li.cong@pku.edu.cn, 450275803@qq.com, qingnishen@ss.pku.edu.cn, fangyj@ss.pku.edu.cn, zhwu@ss.pku.edu.cn

Abstract

To ensure the security of sensitive data, people need to encrypt them before uploading them to the public storage. Attribute-based encryption (ABE) is a promising cryptographic primitive for fine-grained sharing of encrypted data. However, ABE lacks user and authority accountability. The user can share his/her secret key without being identified, while key generation center (KGC) can generate any user’s secret key. In this paper, we propose a practical large universe ciphertext-policy ABE (CP-ABE) with user and authority accountability in the white-box model. As embedding the user’s identity information into this user’s secret key directly, the trace stage has only (1) time overhead. The property of accountability is proved against the dishonest user and KGC in the standard model. We implement our scheme in Charm. Experiments show that CP-ABE of Rouselakis and Waters in CCS 2013 is enhanced in user and authority accountability by our method with small computational cost.

Keywords
Attribute-Based Encryption User accountability Authority accountability White-box model
Published
2016-02-09
Appears in
SpringerLink
http://dx.doi.org/10.1007/978-3-319-28865-9_27
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