Encrypted transmitting method for power carrier data

Abstract

The invention discloses an encrypted transmitting method for power carrier data. The method can be in finite approximation to an optimal frame length of an IPv6 packet segment self-adaptively, has relatively low complexity, can be converged quickly to obtain the optimal frame length and efficiently supports IPv6. A system can generate a key according to personal information of a user, so that the key has the uniqueness and the complexity; and in digital signal encryption and decryption processes, by performing a bit operation on a plaintext digital signal, a user key and a first random digital signal to obtain a first ciphertext digital signal, simultaneously performing the bit operation on the user key and the first random digital signal to obtain a second random digital signal and performing the bit operation on the second random digital signal and the first ciphertext digital signal to obtain a second ciphertext digital signal, and at last, performing a reverse bit operation on the second ciphertext digital signal to obtain an original plaintext digital signal, the problems of confidentiality and poor security of the digital signal are solved, and the cracking difficulty is increased greatly.

Description

[0001] Technical field [0002] The invention relates to an encrypted transmission method of power carrier data. Background technique [0003] The smart grid is a power transmission and distribution network using sound two-way communication, advanced sensors and distributed computing. Its purpose is to improve the efficiency of power transmission and use, and improve the reliability and security of the power grid. Establishing a high-speed, two-way, real-time, and integrated communication system is the basis for realizing the smart grid. At present, the main transmission means of distribution communication network are: optical fiber, public wireless network, self-built dedicated wireless network, power line carrier communication, power line frequency communication and other methods. [0004] Power line power frequency communication achieves data transmission by superimposing tiny distorted signals on voltage and current. Because low frequency power frequency distorted signals...

AI Technical Summary

Problems solved by technology

[0007] With the evolution of the encryption algorithm, the group encryption algorithm encrypts the data in groups, which increases the difficulty of data decryption. However, a fixed encryption algorithm and key are used for encryption. After the encryption algorithm and key are determined, the plaintext and the password form a corresponding relationship , can be cracked by brute force methods such as brute force method, and the security needs to be improved

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