Instruction-driven commercial password special processor system

Abstract

According to the instruction-driven commercial password special processor system; a processor enters a main assembly line after receiving password configuration information, and an instruction fetching module starts to fetch an instruction from an internal instruction memory and sends the instruction to a decoding module; the decoding module carries out decoding according to a coding format of a customized instruction set, maintains a register file with variable length and bit width and sends a selection signal, an operation code and an operand to each special execution module facing encryption and decryption, and the data access module reads data from off-chip storage according to the grouping length and writes in an output result; the cryptographic operation module processes data in sequence according to the instruction decoding result and feeds forward and writes back an intermediate result, and the branch skip module judges to enter, continue or end iterative loop according to conditions. The invention is oriented to encryption and decryption algorithms, drives a special execution module through an instruction, provides a reasonable intermediate data scheme, can additionally add an execution unit, and flexibly supports more encryption and decryption algorithms.

Description

technical field [0001] The invention belongs to the technical field of integrated circuit design and electronic information security, and specifically relates to a customized instruction set based on a Chinese national standard commercial encryption algorithm and its processor implementation. Background technique [0002] Since entering the 21st century, technology has changed with each passing day, information technology has developed rapidly, and people are living in the era of big data and the Internet of Things. The rise and popularization of emerging information storage and interaction methods such as mobile communications, e-commerce, smart medical care, and portable devices have brought great convenience, but at the same time, people are paying more and more attention to issues related to information security and communication risks. Cryptography technology is undoubtedly the foundation and core of reducing information security risks. [0003] The rise of modern cryp...

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the deficiencies of the prior art, the present invention aims at the national standard cryptographic algorithm of China, considering the requirements of high performance and low resource consumption, and proposes a set of custom instruction sets and its special processor implementation

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