Traitor Traceable and Revocation-oriented Attribute Based Encryption with Proxy Decryption for Cloud Devices

Q1 Mathematics
G. Kumar, A. Krishna
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引用次数: 0

Abstract

Cloud storage environment permits the data holders to store their private data on remote cloud computers. Ciphertext Policy Attribute Based Encryption (CP-ABE) is an advanced method that assigns fine-grained access control and provides data confidentiality for accessing the cloud data. CP-ABE methods with small attribute universe limit the practical application of CP-ABE as the public parameter length linearly increases with the number of attributes. Further, it is necessary to provide a way to perform complex calculations during decryption on outsourced devices. In addition, the state-of-art techniques found it difficult to trace the traitor as well as revoke their attribute due to the complexity of ciphertext updation. In this paper, a concrete construction of CP-ABE technique has been provided to address the above limitations. The proposed technique supports large attribute universe, proxy decryption, traitor traceability, attribute revocation and ciphertext updation. The proposed scheme is proven to be secure under random oracle model. Moreover, the experimental outcomes reveal that our scheme is more time efficient than the existing schemes in terms of computation cost.
面向云设备的可追踪和面向撤销的基于属性的加密与代理解密
云存储环境允许数据持有者将其私人数据存储在远程云计算机上。基于密文策略属性的加密(CP-ABE)是一种先进的方法,可为访问云数据分配细粒度访问控制并提供数据保密性。由于公共参数长度随属性数量线性增加,因此属性范围较小的 CP-ABE 方法限制了 CP-ABE 的实际应用。此外,有必要提供一种在外包设备上解密时执行复杂计算的方法。此外,由于密文更新的复杂性,最先进的技术难以追踪叛徒和撤销其属性。本文提供了 CP-ABE 技术的具体结构,以解决上述限制。所提出的技术支持大属性范围、代理解密、叛徒追踪、属性撤销和密文更新。在随机甲骨文模型下,所提出的方案被证明是安全的。此外,实验结果表明,就计算成本而言,我们的方案比现有方案更省时省力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.10
自引率
0.00%
发文量
33
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