Method for realizing secure transmission of data based on SM2-SM3-SM4 cryptographic algorithm

Abstract

The invention discloses a method for realizing secure transmission of data based on a national cryptographic SM2-SM3-SM4 algorithm, which comprises the following steps of: adding the SM2-SM3-SM4 national cryptographic algorithm in a cipher.c cryptographic algorithm file in an OpenSSH (Open Secure Shell) source code, modifying the cipher.c cryptographic algorithm file in the OpenSSH source code, and generating a session key and a session ID (Identity); carrying out identity authentication on the OpenSSH client; establishing an encryption tunnel, the OpenSSH client and the OpenSSH server starting to communicate, and the integrity of data transmission between the OpenSSH client and the OpenSSH server being verified through a digest algorithm; and session data transmission between the OpenSSH client side and the OpenSSH server side being encrypted. According to the method, the source codes of the OpenSSH client side and the OpenSSH server side are modified, the adaptation of the SM2-SM3-SM4 cryptographic algorithm is increased, a safer mechanism is adopted, the information encryption calculation amount and complexity are improved, and an encryption communication tunnel is established, so that the attack on the block cipher algorithm can be effectively resisted when the OpenSSH client side accesses the OpenSSH server side.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a method for realizing secure data transmission based on the national secret SM2-SM3-SM4 algorithm. Background technique [0002] Since cloud computing was proposed in 2006, after years of research and development, cloud computing has formed a relatively complete ecosystem. From traditional heavy servers to distributed computing on the "cloud", it is becoming more and more convenient for users to access computing resources, and the computing speed will only increase. With the promotion of cloud computing technology in China, traditional industries such as government affairs systems, finance, education, and medical care are driven by policies and businesses, and the demand for cloud access is becoming increasingly strong. However, going to the cloud brings not only opportunities but also challenges. Business data such as government affairs, finance, and education are all...

AI Technical Summary

Problems solved by technology

The data basis of the SM2 algorithm is based on the discrete pair mathematical problem (ECDLP) on the elliptic curve, which is difficult to realize in engineering applications and has a high unit security intensity

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