PSK generation method and apparatus, user equipment, server, and storage medium

Abstract

The invention provides a PSK generation method and apparatus, user equipment, a server, and a storage medium. The method comprises the following steps: obtaining a random key string through a quantumkey distribution network; generating a first random number locally, and obtaining a second random number generated by the server; generating an initial plaintext by using the first random number and the second random number; and performing symmetric encryption based on the random key string and the initial plaintext to generate a PSK. According to the method, the random key string is obtained by using the quantum key distribution network with high security, and only symmetric encryption is adopted in the process of generating the PSK, so that the calculation amount of key generation can be reduced under the premise of ensuring the network security.

Description

technical field [0001] The present invention relates to the technical field of encryption, in particular to a PSK generation method, device, user equipment, server and storage medium. Background technique [0002] In order to ensure the security of network communication, before the user equipment and the server start encrypted communication, the user equipment and the server usually need to be based on network security protocols such as Secure Sockets Layer (Secure Sockets Layer, SSL), Transport Layer Security (Transport Layer Security, TLS), etc. , to perform key agreement for network communication. [0003] Encrypted communication in the prior art usually needs to be paid for by the calculation amount of the user equipment and the server. In order to increase the difficulty of the key being cracked, the user equipment and the server usually obtain the key based on an asymmetric encryption algorithm such as the RSA algorithm. The asymmetric encryption algorithm has a larg...

AI Technical Summary

Problems solved by technology

The asymmetric encryption algorithm has a large amount of calculation, which increases the computing burden of the user equipment and the server, and easily affects the communication efficiency between the user equipment and the server.

Moreover, with the improvement of computer cracking power, even if the key length of the RSA algorithm is doubled from 1024 bits to 2048 bits, the security of the key can no longer be guaranteed.

However, if the security of the key is ensured by further increasing the key length, it will lead to a further increase in the calculation amount of the user equipment and the server during the key negotiation process.

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