集成电路与嵌入式系统2024，Vol.24Issue(10)：49-55,7.DOI:10.20193/j.ices2097-4191.2024.0019
基于RISC-V的模块复用SM4密码协处理器的设计
Design of module reuse SM4 cipher coprocessor based on RISC-V
摘要
Abstract
In response to the current situation of massive network data volume,increasing attention and demands for network data confi-dentiality,an SM4 cipher coprocessor based on the Hummingbird E203 open-source RISC-V processor has been designed and imple-mented.Based on the Hummingbird E203 MCU platform,the SM4 cipher coprocessor has been extended through 5 custom extension instructions,allowing users to call the coprocessor core to encrypt and decrypt data by writing program code on the software side.Com-pared with no extension instructions,its throughput can reach 153.75 times.Simultaneously,by studying the SM4 encryption and decryption algorithm,implement module multiplexing for key extension and repeated encryption and decryption parts to reduce circuit area.Under the UMC 28 nm process,the combined area of the SM4 coprocessor is 7 098.8 μm2,with a maximum clock frequency of 200 MHz and a data throughput rate of 775.758 Mbit/s.The SM4 coprocessor can achieve a data throughput rate of 150.588 Mbit/s at a clock frequency of 100 MHz.关键词
RISC-V/SM4/协处理器/硬件加速/指令扩展Key words
RISC-V/SM4/coprocessor/hardware acceleration/ISA extension分类
信息技术与安全科学引用本文复制引用
王经纶,王海婷,秋小强,陈逸风..基于RISC-V的模块复用SM4密码协处理器的设计[J].集成电路与嵌入式系统,2024,24(10):49-55,7.基金项目
国家自然科学基金项目(62204136). （62204136）
