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在电子商务和电子政务领域中,针对多人联合签署同一文件以及追究签名者责任的需求,提出了一种可追踪身份的基于属性的多重签名方案.采用基于属性的多重签名(Attribute based Multi-signature,ABMS),解决了多人联合签署同一文件问题.将可追踪身份的思想引入到ABMS中,有效解决了签名者滥用签名,在保证签名者隐私性的同时实现了其身份的可追踪性.具体构造了该方案并在子群判定假设和计算性Diffie-Hellman假设下证明了该方案在标准模型下是不可伪造的.分析表明,与已有ABMS方案相比,所提方案具有身份可追踪性,适用于解决多签名者追责问题.
In the field of e-commerce and e-government, a multi-signature attribute-based signature scheme is proposed for the multi-people to jointly sign the same document and pursue the responsibility of signer.Using attribute based Multi- signature, ABMS), solves the problem of multi-person joint signing of the same document.It introduces the idea of traceability into ABMS, which effectively solves the problem of the abuse of signatures by signers and ensures the traceability of identities while ensuring the signer’s privacy The scheme is constructed in detail and proved to be unforgeable under the standard model under the subgroup decision hypothesis and computational Diffie-Hellman assumption.The analysis shows that compared with the existing ABMS scheme, the proposed scheme has the identity of Traceability, applicable to solve the problem of multi-signer chasing responsibility.