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基于身份的环签名是基于身份密码学和环签名的结合,具有较高的实际应用价值.现有的基于身份的环签名方案大多基于双线性对问题.然而,双线对问题在量子环境下是不安全的.为了设计量子环境下安全的基于身份的环签名方案,本文基于格困难假设,提出一种标准模型下基于身份的格上环签名方案.该方案的安全性基于格中标准的小整数解(SIS)困难假设.与其他标准模型下基于身份的格上环签名方案相比,该签名方案的计算效率进一步提高.
ID-based ring signature is based on the combination of identity cryptography and ring signature, which has high practical value.At present, ID-based ring signature scheme is mostly based on bilinear pair problem.However, the problem of two-wire pair in quantum environment In order to design a secure identity-based ring signature scheme in quantum environment, this paper proposes a identity-based lattice-based ring signature scheme based on the lattice-hard assumption.The security of the scheme is based on the lattice-based criterion (SIS), the computational efficiency of the signature scheme is further improved compared with the identity-based lattice-based ring signature scheme of other standard models.