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首页> 外文期刊>Journal of ambient intelligence and humanized computing >A new verifiable outsourced ciphertext-policy attribute based encryption for big data privacy and access control in cloud
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A new verifiable outsourced ciphertext-policy attribute based encryption for big data privacy and access control in cloud

机译:基于新的可验证的外包密文 - 策略基于大数据隐私和云访问控制的加密

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摘要

The foremost security concerns for big data in the cloud are privacy and access control. Ciphertext-policy attribute based encryption (CP-ABE) is an effective cryptographic solution for above concerns, but the existing CP-ABE schemes are not suitable for big data in the cloud as they require huge computation time for encryption and decryption process. In this paper, we propose a new verifiable outsourced CP-ABE for big data privacy and access control in the cloud. Our scheme reduces the computational overhead of encryption and decryption by outsourcing the heavy computations to the proxy server. Our scheme also verifies the correctness of the data along with the outsourcing computations. Further, our scheme limits the data access for a set of users instead of providing an infinite number of times data access, which is essentially required for commercial applications. In security analysis, we prove that our scheme is secure against chosen plain-text attack, collusion and proxy attacks. Performance analysis proves that our scheme is efficient.
机译:云中大数据的最重要的安全问题是隐私和访问控制。基于密文 - 策略属性的加密(CP-ABE)是一个有效的加密解决方案,用于上述问题,但现有的CP-ABE方案不适用于云中的大数据,因为它们需要巨大的加密和解密过程的计算时间。在本文中,我们为云中的大数据隐私和访问控制提出了一个新的可验证外包CP-APE。我们的方案通过将重型计算外包给代理服务器来降低加密和解密的计算开销。我们的计划还验证了数据的正确性以及外包计算。此外,我们的方案限制了一组用户的数据访问,而不是提供无限次数数据访问,这基本上是商业应用的。在安全分析中,我们证明我们的计划是安全的普通文本攻击,勾结和代理攻击。绩效分析证明了我们的计划是有效的。

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