Attributed-Based Access Control for Multi-authority Systems in Cloud Storage

Kan Yang, X. Jia
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引用次数: 161

Abstract

Cipher text-Policy Attribute-base Encryption (CP-ABE) is regarded as one of the most suitable technologies for data access control in cloud storage. In almost all existing CP-ABE schemes, it is assumed that there is only one authority in the system responsible for issuing attributes to the users. However, in many applications, there are multiple authorities co-exist in a system and each authority is able to issue attributes independently. In this paper, we design an access control framework for multi-authority systems and propose an efficient and secure multi-authority access control scheme for cloud storage. We first design an efficient multi-authority CP-ABE scheme that does not require a global authority and can support any LSSS access structure. Then, we prove its security in the random oracle model. We also propose a new technique to solve the attribute revocation problem in multi-authority CP-ABE systems. The analysis and simulation results show that our multi-authority access control scheme is scalable and efficient.
云存储中基于属性的多权限系统访问控制
密文-策略属性基础加密(Cipher text-Policy Attribute-base Encryption, CP-ABE)被认为是云存储中最适合的数据访问控制技术之一。在几乎所有现有的CP-ABE方案中,都假定系统中只有一个机构负责向用户颁发属性。但是,在许多应用程序中,系统中存在多个授权机构,每个授权机构都能够独立地发布属性。本文设计了一个多权限系统的访问控制框架,提出了一种高效、安全的云存储多权限访问控制方案。我们首先设计了一种高效的多授权CP-ABE方案,该方案不需要全局授权,可以支持任何LSSS访问结构。然后,在随机oracle模型中证明了其安全性。我们还提出了一种新的技术来解决多权威CP-ABE系统中的属性撤销问题。分析和仿真结果表明,该多权限访问控制方案具有可扩展性和高效性。
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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