基于可验证SM2门限算法的移动终端签名系统的设计与实现

随着移动互联网的快速崛起，移动终端作为重要的信息通信及数据载体，其在信息传输及处理过程中发挥了极大作用，但是移动终端密钥的使用、存储不安全性限制了其使用。因此本文在国密算法标准基础上，提出并实现了一种适用于移动终端的基于可验证SM2门限签名方案。该方案对密钥进行分散生成、存储，并在密钥生成、数字签名阶段采用验证公式对传递份额进行计算，保证了在移动端的数字签名的安全性，并通过性能测试，表明该系统具有良好的性能并满足签名算法的安全性要求。

Design and Achieve of Mobile Terminal Signature System Based on Verifiable SM2 Threshold Scheme

With the rapid rise of the mobile Internet, mobile terminals, as important information communication and data carriers, have played an important role in the information transmission and processing, but the use and storage insecurities of mobile terminal keys have limited their use. Therefore, based on the national secret algorithm standard, this paper proposes and implements a verifiable SM2 threshold signature scheme suitable for mobile terminals. The scheme decentralizes and stores the key, and uses the verification formula to calculate the transfer share in the key generation and digital signature phase, which ensures the security of the digital signature on the mobile terminal, and the performance test shows that the system has good performance and meets the security requirements of the signature algorithm.