基于 SM2 签名算法的高速密码卡实现

目前 SM2 签名算法应用越来越广泛，随着网络通信与电子交易业务的快速增长，其运算效率面临着前所未有的挑战。为了提高密码卡运算效率，设计并实现了一种基于 SM2 签名算法的高速密码卡。该密码卡利用协议组合运算的思想，减少了 DSP 与 FPGA 交互次数，提高了签名处理效率。同时，采用预计算技术将（1+ d）-1的值存储在密码卡中，降低了签名的计算复杂度。与传统基于 SM2 签名算法的密码卡相比，该密码卡签名速度提高了 22%，可适用于大量数据通信的场景。

Implementation of High-Speed Cryptographic Card of SM2 Signature Algorithm

SM2 signature algorithm has been applied widely and with the increase of network communication and electronic traffic，its efficiency is facing unprecedented challenges. In order to improve the computational efficiency of the cipher card，a high-speed cryptographic card of SM2 signature algorithm is designed and implemented. Using the idea of combinational operations，the number of interactions between DSP and FPGA is reduced to improve the efficiency of signature processing. At the same time，the value（1+ d）-1 is stored in cipher card by using the pre-computation technique，reducing the computational complexity of the signature. Compared with the traditional cryptographic card of SM2 signature algorithm，the signature speed of the designed cryptographic card is increased by 22%，suitable for applications with data communication.