立即撤销无泄漏组签名

Xuhua Ding, G. Tsudik, Shouhuai Xu
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引用次数: 36

摘要

群签名是一种有趣且吸引人的加密结构,具有许多有前途的潜在应用。这项工作的动机是组签名的诱人特性,特别是它们作为匿名凭证系统基础的潜力。我们从系统的角度重新审视了组签名的整个概念,并确定了两个新的安全需求:泄漏自由和立即撤销,这对大量应用程序至关重要。然后,我们提出了一个新的群签名方案,该方案实现了所有已识别的属性。我们的方案基于所谓的系统架构方法。它比最先进的技术更有效,并且易于实施。此外,它还体现了众所周知的职责分离原则。该方案的另一个优点是避免了对底层匿名通信通道的依赖,这在以前的方案中是必要的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Leak-free group signatures with immediate revocation
Group signatures are an interesting and appealing cryptographic construct with many promising potential applications. This work is motivated by attractive features of group signatures, particularly, their potential to serve as foundation for anonymous credential systems. We reexamine the entire notion of group signatures from a systems perspective and identify two new security requirements: leak-freedom and immediate-revocation, which are crucial for a large class of applications. We then present a new group signature scheme that achieves all identified properties. Our scheme is based on the so-called systems architecture approach. It is more efficient than the state-of-the-art and facilitates easy implementation. Moreover, it reflects the well-known separation-of-duty principle. Another benefit of our scheme is the obviated reliance on underlying anonymous communication channels, which are necessary in previous schemes.
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