Software and hardware collaborative segmented scanning type Montgomery modular exponentiation computing system and readable storage medium

The invention provides a soft and hard collaborative segmented scanning type Montgomery modular exponentiation calculation system. An ARM processor and FPGA resources are arranged in the SoC platform. The ARM end is mainly used for overall task scheduling and data preprocessing necessary for a system segmentation scanning algorithm. Storing the processed data into a specific address of an SRAM (Static Random Access Memory), and then starting an FPGA (Field Programmable Gate Array) for operation. The FPGA end realizes modular design and comprises an address generation module, a modular inversion module, a CIOS Montgomery modular multiplication module, a segmented scanning type Montgomery modular exponentiation control module and the like. According to the invention, 256-bit modular exponentiation is realized, a 6-bit segmented scanning mode is adopted, and data to be pre-processed is stored in an SRAM (Static Random Access Memory). Specifically, the Montgomery modular multiplication module is realized by adopt