观点基于身份(基于标志) 强壮指明验证器签名(SDVS ) 是到基于格子的密码学的程度。作者由使用在固定尺寸技术的基础代表团在格子上建议了一个基于标志的 SDVS 计划。建议计划基于与错误(LWE ) 听说对适应选择消息和选择身份攻击的问题,和 unforgeability 基于短整数答案(SIS ) 的坚硬的坚硬在随机的神谕模型的问题。如果参数 m, n 和 q 是一样,这个计划的签名长度比(3m+n ) 是已知的基于格子的 SDVS 的签名长度的磅 q 位在公钥环境策划的仅仅是短的 3mlbq 位。作为结果,建议计划关于签名长度和计算费用不仅基于标志而且有效。而且,这篇文章也求婚了一基于标志强壮基于建议 SDVS 计划指明验证器戒指签名(SDVRS ) 计划,它满足 anonimity, unforgeability。
The notion of the identity-based(id-based) strong designate verifier signature(SDVS) was extent to the lattice-based cryptography. The authors proposed an id-based SDVS scheme over lattices by using the basis delegation technical in fixed dimension. The proposed scheme is based on the hardness of the learning with errors(LWE) problem, and the unforgeability against adaptive chosen message and selective identity attack is based on the hardness of the short integer solution(SIS) problem in the random oracle model. If the parameters m, n and q are the same, the signature length of this scheme is only 3mlbq bits shorter than(3m+n) lb q bits which is the signature length of the known lattice-based SDVS scheme in the public key environment. As a result, the proposed scheme is not only id-based but also efficient about the signature length and the computation cost. Moreover, this article also proposed an id-based strong designate verifier ring signature(SDVRS) scheme based on the proposed SDVS scheme, which satisfies anonimity, unforgeability.