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首页> 外文会议>International Conference on Information and Communications Security(ICICS 2004); 20041027-29; Malaga(ES) >Perfect Concurrent Signature Schemes
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Perfect Concurrent Signature Schemes

机译：完善的并发签名方案

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摘要

The notion of concurrent signatures was recently introduced by Chen, Kudla and Paterson in their seminal paper in [5]. In concurrent signature schemes, two entities can produce two signatures that are not binding, until an extra piece of information (namely the keystone) is released by one of the parties. Upon release of the keystone, both signatures become binding to their true signers concurrently. In this paper, we extend this notion by introducing a new and stronger notion called perfect concurrent signatures. We require that although both signers are known to be trustworthy, the two signatures are still ambiguous to any third party (c.f. [5]). We provide two secure schemes to realize the new notion based on Schnorr's signature schemes and bilinear pairing. These two constructions are essentially the same. However, as we shall show in this paper, the scheme based on bilinear pairing is more efficient than the one that is based on Schnorr's signature scheme.
机译：Chen，Kudla和Paterson最近在[5]的开创性论文中引入了并发签名的概念。在并发签名方案中，两个实体可以产生两个没有约束力的签名，直到其中一方释放额外的信息（即梯形失真）为止。释放梯形失真校正后，两个签名将同时绑定到其真实签名者。在本文中，我们通过引入一种新的更强的概念（称为完美并发签名）来扩展此概念。我们要求尽管已知两个签名者都是值得信赖的，但这两个签名对于任何第三方仍然是模棱两可的（参见[5]）。我们提供了两种安全的方案来实现基于Schnorr签名方案和双线性配对的新概念。这两种构造基本相同。但是，正如我们将在本文中显示的那样，基于双线性对的方案比基于Schnorr签名方案的方案更为有效。

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