Abstract: In a designated verifier signature scheme，only the designated verifier can verify the validity of the signature.In this paper，based on bilinear pairings，a new efficient identity-based universal designated multi-verifiers signature.The proposed scheme introduces two independent PKG to solve the secure trouble that the single PKG can impersonate the signers to forge their signatures.It is proved that the proposed scheme is secure under the BDH assumption and the random oracle model.

Key words: bilinear parings, identity-based, universal designated multi-verifiers signature

摘要： 在一个指定验证者签名方案中，只有指定的验证者才能验证签名的有效性。论文基于双线性对提出一种新的基于身份的广义指定多个验证者签名方案。新方案采用引进两个独立PKG的方法，在一定程度上消除了单个PKG可以伪造用户签名的安全缺陷。证明了在BDH问题假设和随机预言机下新方案是安全的。

关键词: 双线性对, 基于身份, 广义指定多验证者签名