5G communication information encryption and decryption method and device based on block chain, and storage medium

Abstract

The embodiment of the invention provides a 5G communication information encryption and decryption method and device based on a block chain and a storage medium. According to the embodiment of the invention, a public key of a 5G terminal device and the random number are encrypted by the 5G terminal device by adopting the public key of a target operator to obtain the first encrypted information. Thefirst encrypted information is sent to network equipment of a target operator, the 5G terminal device receives second encryption information sent by the network device and the 5G terminal device decrypts the second encrypted information by using the private key of the 5G terminal device to acquire . decrypted information, if the decrypted information is a random number, a network device is determined to pass verification so that the 5G terminal device without an SIM card can complete the authentication of the operator network by using the public key of the target operator. As the pseudo basestation cannot obtain the private key corresponding to the public key of the target operator, the authentication cannot be completed, thereby thoroughly avoiding the harassment of the pseudo base station, and improving the communication safety between the 5G terminal device and the operator network device.

Description

technical field [0001] The embodiment of the present invention relates to the field of communication technology, and in particular to a blockchain-based 5G communication information encryption and decryption method, device, and storage medium. Background technique [0002] When a current 5G terminal device accesses a 5G network, the 5G terminal device needs to be inserted into a Subscriber Identity Module (SIM) card. Since the SIM card stores the public key of the operator or the shared key of both parties, any middleman cannot modify the built-in public key or shared key in the SIM card, avoiding any man-in-the-middle attack or monitoring of 5G terminal equipment and operator network equipment communication between. [0003] However, in the access solution where the 5G terminal equipment does not insert a SIM card, the 5G terminal equipment cannot verify the operator's network equipment, so that anyone can build a base station to forge the operator's identification informa...

AI Technical Summary

Problems solved by technology

[0003] However, in the access solution where the 5G terminal device does not insert a SIM card, the 5G terminal device cannot verify the operator's network equipment, so that anyone can build a base station to forge the operator's identification information as a 5G terminal without a SIM card The device provides services and deceives the 5G terminal device to pay, which reduces the security of communication between the 5G terminal device and the operator's network equipment

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