无随机预言模型下可否认的基于属性的指定证实人签名方案

Deniable Attribute-based Designated Confirmer Signature without Random Oracles

首次在无随机预言模型下构建了可否认的基于属性的指定证实人签名方案。在该方案中,签名者和指定的证实人均可通过执行相同的协议来对签名的有效性进行确认,同时可以通过执行相同的协议来否认无效的签名。最后,对方案的正确性进行了分析,并在无随机预言模型下证明了方案的安全性。分析表明,本方案具有不可伪造性和隐形性。

In this paper, we first proposed a deniable attribute-based designated confirmer signature＇s model without random oracles. In this signature scheme, both the signer and the designated confirmer can run the same protocols to confirm a valid designated confirmer signature or disavow an invalid signature. Finally, the proof of correctness and security in the standard model is provided. Analyticdt results show that this scheme obtains the advantages of uniorgeability and invisibility.