Attribute-based signature and its applications
Attribute-based signature and its applications
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DOI：
10.1145/1755688.1755697
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发表时间：
2010-04
期刊：
影响因子：
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通讯作者：
Jin Li;M. Au;W. Susilo;Dongqing Xie;K. Ren
中科院分区：
文献类型：
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作者：
Jin Li;M. Au;W. Susilo;Dongqing Xie;K. Ren
在基于属性的签名（ABS）中，用户使用从属性权威机构颁发的其属性的任意谓词对消息进行签名。在此概念下，签名所证明的不是签署消息的个人身份，而是关于底层签名者所拥有属性的声明。在ABS中，用户即使通过合谋也无法使用他们不拥有的属性伪造签名。另一方面，合法签名者保持匿名，无需担心被撤销，并且在所有其属性满足签名中指定谓词的用户中无法被区分。ABS在许多重要应用中很有用，例如匿名认证和基于属性的消息系统。在本文中，我们通过探索一种新的签名技术，提出了两种支持灵活阈值谓词的高效ABS构造。与现有方案相比，新构造在计算成本和签名大小方面都提供了更高的效率。第一种新构造在随机预言模型中可证明是安全的，而第二种构造不依赖于随机预言假设。为了进一步减少对属性权威机构的信任，我们还展示了一种具有多个属性权威机构的ABS构造。值得注意的是，所有提出的构造的安全性都不依赖于通用群。作为一个示例应用，我们从ABS构建了一个高效的不可转让访问控制系统。
In an attribute-based signature (ABS), users sign messages with any predicate of their attributes issued from an attribute authority. Under this notion, a signature attests not to the identity of the individual who signed a message, but a claim regarding the attributes the underlying signer possesses. In ABS, users cannot forge signatures with attributes they do not possess even through colluding. On the other hand, a legitimate signer remains anonymous without the fear of revocation and is indistinguishable among all the users whose attributes satisfying the predicate specified in the signature. ABS is useful in many important applications such as anonymous authentication and attribute-based messaging systems. In this paper, we propose two efficient ABS constructions supporting flexible threshold predicate by exploring a new technique for signature signing. Compared with existed schemes, the new constructions provide better efficiency in terms of both the computational cost and signature size. The first new construction is provably secure in the random oracle model, while the second construction does not rely on the random oracle assumption. To further reduce the trust on attribute authority, we also show an ABS construction with multiple attribute authorities. It is worth noting that the security of all the proposed constructions is not relying on generic group. As an illustrative application, we construct an efficient non-transferable access control system from ABS.