短群签名在可信计算中的应用研究

Short Group Signature in Trusted Computing

远程证明提供了平台身份匿名认证功能,并给出了基于隐私CA及直接匿名认证两种方案。直接匿名认证方案的提出意在解决隐私CA方案中的CA瓶颈问题。文章提出了一种全新的直接匿名认证方案:以标准模型下的短群签名机制为主线,以l-MOMSDH假设为安全基础,在与现有方案保持相似效率的前提下,提高协议整体安全性。

Remote attestation realizes the platform identity authentication anonymously through Privacy CA and Direct Anonymous Attestation （DAA）. DAA solves the bottleneck-problem from the Privacy CA. This paper proposes a new DAA protocol from short group signature which takes the short group signatuse in standard models as main line, and the 1-MOMSDH assumption as security fundation. It improves the whole security of DAA and maintains the same efficiency.