Black-Box and Public Traceability in Multi-authority Attribute Based Encryption

ZHAO Qianqian; WU Gaofei; MA Hua; ZHANG Yuqing; WANG He

doi:10.1049/cje.2019.10.006

Volume 29 Issue 1

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ZHAO Qianqian, WU Gaofei, MA Hua, et al., “Black-Box and Public Traceability in Multi-authority Attribute Based Encryption,” Chinese Journal of Electronics, vol. 29, no. 1, pp. 106-113, 2020, doi: 10.1049/cje.2019.10.006

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ZHAO Qianqian, WU Gaofei, MA Hua, et al., “Black-Box and Public Traceability in Multi-authority Attribute Based Encryption,” Chinese Journal of Electronics, vol. 29, no. 1, pp. 106-113, 2020, doi: 10.1049/cje.2019.10.006

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Black-Box and Public Traceability in Multi-authority Attribute Based Encryption

doi: 10.1049/cje.2019.10.006

1.
School of Cyber Engineering, Xidian University, Xi'an 710071, China;
2.
School of Mathematics and Statistics, Xidian University, Xi'an 710071, China;
3.
National Computer Network Intrusion Protection Center, University of Chinese Academy of Sciences, Beijing 101408, China

Funds: This work is supported by the National Key R&D Program China (No.2018YFB0804701) and the National Natural Science Foundation of China (No.61602361, No.U1836210, No.61572460).

More Information

Corresponding author: WANG He (corresponding author) received the Ph.D. degree from Xidian University, China, in 2016. She is currently a lecturer in School of Cyber Engineering, Xidian University, China. Her main research interests include cryptography, quantum cryptography and quantum communication protocol. (Email:hewang@xidian.edu.cn)
Received Date: 2017-03-20
Rev Recd Date: 2017-09-15
Publish Date: 2020-01-10

Abstract

Abstract

Ciphertext-policy Attribute-based encryption (CP-ABE) is a promising tool for implementing finegrained cryptographic access control. While the uniqueness of generating private keys brings extra security issues. The key escrow is inherent in CP-ABE systems because the trusted authority has the power to decrypt every ciphertext. The private keys are only associated with the attributes nor the user's identity. Some malicious users might be tempted to leak their decryption privileges for financial gain without the risk of being caught as the decryption privilege could be shared by multiple users who own the same set of attributes. We propose a new multiauthority CP-ABE with blackbox and public traceability, where the private keys are assigned by the cooperation between one central authority and multi-authorities. The performance and security analyses indicate that the proposed scheme is highly efficient and provably secure under the security model.
- CP-ABE,
- Multi-authority,
- User accountability

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References(22)

References

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