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A formal construction of certificateless proxy multi-signature scheme

机译：无证书代理多重签名方案的正式构建

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摘要

Proxy multi-signature is a scheme that allows a proxy signer to sign messages on behalf of a group of original signers. To our best knowledge, most of the existing proxy multi-signature schemes are proposed in public key infrastructure or identity-based setting. However, owing to avoiding the inherent escrow problem of identity-based cryptography and yet not requiring certificates to guarantee the authenticity of public keys, certificateless public key cryptography has become an attractive paradigm on which many cryptographical primitives are based. In this paper, a generic construction and a formal security model of certificateless proxy multi-signature (CLPMS) is defined. A concrete CLPMS scheme is also proposed, which is proven to be existentially unforgeable against adaptively chosen warrant attacks and chosen message and identity attacks in the random oracle model under the computational Diffie-Hellman assumption.
机译：代理多重签名是一种允许代理签名者代表一组原始签名者签名消息的方案。据我们所知，大多数现有的代理多重签名方案都是在公钥基础结构或基于身份的环境中提出的。但是，由于避免了基于身份的密码固有的托管问题，并且又不需要证书来保证公钥的真实性，无证书的公钥密码已成为许多密码原语所基于的有吸引力的范例。本文定义了无证书代理多重签名（CLPMS）的通用构造和正式的安全模型。还提出了一种具体的CLPMS方案，在计算的Diffie-Hellman假设下，该方案被证明对于随机预言模型中的自适应选择的授权攻击以及消息和身份攻击是存在不可伪造的。

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