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arXiv 1004.1304cs.CR
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可证明安全的基于身份的广义签密方案

Provable Secure Identity Based Generalized Signcryption Scheme

Gang Yu, Xiaoxiao Ma, Yong Shen, Wenbao Han

摘要:

根据实际需要,广义签密方案可以灵活地作为加密方案、签名方案或签密方案工作。本文首先给出了一个基于身份的广义签密安全模型,该模型比现有的模型更加完备。其次,我们提出了一个基于身份的广义签密方案。第三,在这个完全模型下给出了新方案的安全性证明。与现有的基于身份的广义签密方案相比,新方案具有更低的实现复杂度。此外,新方案的计算复杂度与现有的普通签密方案相当。

英文摘要:

According to actual needs, generalized signcryption scheme can flexibly work as an encryption scheme, a signature scheme or a signcryption scheme. In this paper, firstly, we give a security model for identity based generalized signcryption which is more complete than existing model. Secondly, we propose an identity based generalized signcryption scheme. Thirdly, we give the security proof of the new scheme in this complete model. Comparing with existing identity based generalized signcryption, the new scheme has less implementation complexity. Moreover, the new scheme has comparable computation complexity with the existing normal signcryption schemes.

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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