SM3 cryptographic hash algorithm message extension serial optimization system and method

Abstract

The invention relates to an SM3 cryptographic hash algorithm message extension serial optimization system and method. The system comprises a fixed storage area, a first special register, a second special register and an arithmetic unit, the first special register and the second special register can carry out read-write operation on the fixed storage area, and the arithmetic unit carries out arithmetic processing on numerical values of the first special register and the second special register. The system and the method have the characteristics of less registers, low power consumption and the like. Meanwhile, the operation time can be shortened, and the implementation area can be reduced, namely, the operation rounds and the use of memories are reduced.

Description

Technical field[0001]The invention relates to the technical field of information security, in particular to a serial optimization method and system for message expansion in a national secret SM3 cryptographic hash algorithm.Background technique[0002]As the most widely used cryptographic algorithm, the cryptographic hash function plays an extremely important role in production and life. It is mainly used in many security fields such as hash operations on data, digital signatures, and message authentication codes. It is cryptographic implementation , An important part of the security protocol. Commonly used cryptographic hash functions at home and abroad include SHA-1 algorithm, SHA-2 series algorithm, SHA-3 algorithm and domestic SM3 cryptographic hash algorithm issued by the National Institute of Standards and Technology (NIST). Since hash function ciphers are often used in scenarios involving large amounts of data processing, they have high requirements on the speed, area, and powe...

AI Technical Summary

Problems solved by technology

However, the existing national secret SM3 password hash algorithm requires a large number of intermediate storage values, and the operation efficiency is low

In the implementation process of the existing national secret SM3 cryptographic hash algorithm, a large number of registers or storage units are usually used to pre-calculate and store W0-W67, W0'-W63' generated during the message expansion operation process, which will result in a large number of registers or The problem of low storage unit utilization

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