Encryption and decryption method for extracting random numbers to disturb sign parameter characteristic values based on physical layer protocol data

Abstract

The invention relates to an encryption and decryption method for extracting random numbers to disturb sign parameter characteristic values based on physical layer protocol data, and belongs to the technical field of network security. The method comprises the following steps of: an encryption process: firstly, disturbing by using an initial key and a physical layer protocol data random number to generate the initial key; then, the physical sign parameter characteristic value PQ being used for generating a key stream after being disturbed by a physical layer protocol data random number; and finally, the plaintext stream being encrypted through a key in the key stream to generate an encrypted ciphertext stream. And a decryption process: after receiving the ciphertext flow, the receiving end generates a key parameter by using a physical layer protocol data random number obtained after leader sequence synchronization to disturb the transmitted sign parameter characteristic value to generatea key, and decrypts the ciphertext flow according to the obtained key to obtain a plaintext flow. According to the invention, light-weight security encryption is realized by using a relatively smallamount of computation in a symmetric encryption algorithm, and low-power-consumption security transmission of data between network nodes is ensured.

Description

technical field [0001] The invention belongs to the technical field of network security, and relates to an encryption and decryption method for disturbing the characteristic value of a sign parameter by extracting random numbers based on physical layer protocol data. Background technique [0002] Body Area Network (BAN) plays an important role in the study of changes in vital signs and life support in the fields of medical care, health, rescue, battlefield rescue, etc. It has attracted the attention of a large number of academic and industrial research applications. In the body area network, since the detection nodes mostly use miniature sensor devices to collect and monitor human body sign parameters, as a remote physical front-end wireless sign signal solution, its purpose is to realize long-term ultra-low real-time physical state monitoring, so the simplified hardware and ultra- The implementation of low power consumption has limited node resources, and signal acquisitio...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a kind of encryption and decryption method based on the physical layer protocol data extraction random number disturbance to the characteristic value of the sign parameter, to solve the traditional symmetric The security problems caused by the shared key transmission leakage in the encryption algorithm and the highly complex calculation problems caused by the public and private keys in the asymmetric encryption algorithm, using the relatively small amount of calculation in the symmetric encryption algorithm to achieve lightweight security encryption, Guarantee the low-power and secure transmission of data between network nodes

Images