Security communication method based on special invers transformation

Abstract

This invention applies two signal groups orthogonal but not orthogonal themselves meeting special inverse transformation, as a demodulation signal and a modulation signal, they modulate and demodulate analog or digital signals transmitted in one way or multi-way many times so as to constitute muktinest ciphering to the source signal, or code and decode multi-bit digital signals as the decoding signal of coding signal to let the decoding and judgment of signals rely on the special inverse transformation algorithm and complicated restruction to realize encryption.

Description

technical field [0001] The present invention relates to a secure communication method, which adopts two orthogonal signal families satisfying special inverse transformation as the demodulated carrier signal and the modulated carrier signal to perform multiple modulation and demodulation on one-way or multi-way transmitted analog or digital signals, Or as a decoded signal and a coded signal, the multi-bit digital signal is encoded and decoded in parallel, thereby providing a new secure communication method. Background technique [0002] The rapid development of the communication industry has brought about the problem of confidential communication. The illegal interception and theft of information often cause serious consequences, so the confidential communication has attracted more and more attention. At present, the security technologies that have been applied in communication include information encryption, channel security, scrambling, special or multiple modulation, and s...

AI Technical Summary

Problems solved by technology

However, the effects that traditional methods and systems can achieve are extremely limited for communication systems with high confidentiality requirements

Therefore, in order to obtain high confidentiality, it is often necessary to use multiple security technologies in combination, but this brings about the problem of greatly increasing the complexity and cost of the system

The CDMA technology with better confidentiality is based on spread spectrum communication, which cannot be applied in the existing communication system, and the technology is complicated and the construction cost is high.

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