arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1302.6428cs.CR
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基于属性的代理重加密中的矩阵访问结构策略

Matrix Access structure Policy used in Attribute-Based Proxy Re-encryption

Keying Li

摘要:

代理重新加密(Proxy Re-encryption,PRE)允许一个半信任代理将原本发给Alice的密文转换成发给Bob的相同消息的加密。Song Luo,Zhao Hu和Zhong Chen提出了一种新的基于密文策略属性的代理重加密方案(CP-AB-PRE)。在他们的方案中实现的密文策略是支持多值属性、负属性和通配符的与门策略。提出了一种基于LSSS矩阵访问结构的访问策略。该方案同时具有PRE和CP-AB-PRE的单向性、非交互性、多用途等特性,允许代理决定密文是否可以重新加密,允许代理增加访问策略。此外,我们的计划可以修改为外包的W2的政策。

英文摘要:

Proxy re-encryption (PRE) allows a semi-trusted proxy to convert a ciphertext originally intended for Alice into an encryption of the same message intended for Bob. Song Luo, Jianbin Hu, and Zhong Chen presented a novel ciphertext policy attribute-based proxy re-encryption (CP-AB-PRE) scheme. The ciphertext policy realized in their scheme is AND-gates policy supporting multi-value attributes, negative attributes and wildcards. We propose a new access policies based on LSSS matrix access structures. Our scheme still have the properties of both PRE and CP-AB-PRE, such as unidirectionality, non-interactivity, multi-use, allows the encryptor to decide whether the ciphertext can be re-encrypted and allows the proxy to add access policy. Furthermore, our scheme can be modified to outsource the policy of W2.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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