Method and system for implementing ssh protocol based on post-quantum key exchange

Abstract

The invention belongs to the field of information technology, and in particular relates to a method and a system for realizing the SSH protocol based on post-quantum key exchange. The method includes: the client and the server calculate the public-private key pair respectively; calculate the temporary session public key of the client, and send the client public key and the client temporary session public key to the server; the server authenticates the client; the calculation server Temporary session public key; calculate the server’s temporary session variable and temporary session error correction variable, and the initial seed of the server’s shared key; the server uses the post-quantum algorithm to generate the final server’s shared key for this session; Authentication; the client calculates the client temporary session variable and the initial seed of the client shared key through the server's identity authentication; the client uses the post-quantum algorithm to generate the final client shared key for this session. The method and its system can effectively resist quantum computer attacks and ensure network security.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a method for realizing the SSH protocol based on the post-quantum key exchange and a system for realizing the SSH protocol based on the post-quantum key exchange. Background technique [0002] With the continuous development of computer networks, the scale of the network has also become larger and larger, and people's demand for remote login functions has also increased, such as configuration and management of remote servers. SSH (Secure Shell) is currently one of the most widely used remote login protocols. Compared with other protocols that provide remote login, SSH can provide multiple security services such as authentication of both communication parties, encrypted transmission of communication data, and integrity verification. [0003] The SSH protocol standard specifies the layered architecture of SSH, such as figure 1 As shown in the SSH protocol architec...

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Problems solved by technology

[0005] In addition, at this stage, SSH has also been exposed to many security loopholes, especially in the process of establishing a connection in the SSH protocol, it does not verify whether the two parties in the communication have been illegally invaded or controlled. Whether it is invaded or illegally controlled by the attacker provides an opportunity for the attacker to attack

Although the current SSH protocol has many advantages and has many users, it does have some loopholes and deficiencies, such as vulnerability to chosen ciphertext attacks, SQL injection, etc. Improving these existing problems has become a technical problem that needs to be solved urgently

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