中图分类号：TN402 文献标志码：A DOI: 10.16157/j.issn.0258-7998.257239
中文引用格式： 吉兵，屈凌翔. 基于MCU的低功耗型SM4硬件设计与实现[J]. 电子技术应用，2026，52(5)：24-28.
英文引用格式： Ji Bing，Qu Lingxiang. Design and implementation of low power SM4 hardware based on MCU[J]. Application of Electronic Technique，2026，52(5)：24-28.

Design and implementation of low power SM4 hardware based on MCU

Abstract： With the rapid development of domestic new energy vehicles, the demand for master MCUs equipped with domestic encryption algorithms has been growing steadily. To meet this demand, this paper designs a universal hardware security module for MCUs based on the SM4 cryptographic algorithm. The module employs the SM4 algorithm as its core engine and supports mainstream modes such as ECB, CBC, CFB, OFB, and CTR. It adopts a standard AHB bus interface, supports DMA transmission, and incorporates low-power design techniques, making it suitable for current mainstream MCU circuit designs. The module was designed and manufactured based on a commercial 40 nm CMOS process. Post-tape-out testing and verification confirm that the SM4 algorithm module functions correctly, operates at a frequency of up to 400 MHz, and holds significant commercial value。

Key words : 40 nm；SM4；AHB；low-power consumption