Secure transmission method using time-varying incidental information flow as key information

Abstract

The invention discloses a secure transmission method using time-varying incidental information flow as key information, which uses binary codes for transmitting data flow; in addition, in the sender data processing procedure, an algorithm generator uses the time-varying incidental information for generating a time-varying encrypted factor, the logical operation of the time-varying encrypted factor and the original data flow to be sent is carried out to generate the encrypted data flow, and the encrypted data flow and the time-varying incidental information are combined in a specific mode to form and send information data flow; a receiver receives the information data flow, detects the time-varying incidental information in the information data flow, separates the time-varying incidental information from the encrypted data flow, and uses the algorithm generator for generating a time-varying decrypting factor according to the time-varying incidental information; and the logical operation of the time-varying decrypting factor and the encrypted data flow is carried out to obtain the original data flow. The method has no need of strict synchronization, can achieve the asynchronous receiving, can reduce the handshaking times, improves the communication efficiency and has better safety.

Description

Technical field [0001] The invention relates to a data secure transmission method, in particular to a secure transmission method in which a time-varying incidental information stream is key information. Background technique [0002] At present, with the rapid development of science and technology, various data are transmitted through wired or wireless means, so the security of the data has also become the focus of the data transmission process. For example, GPS technology has been widely used on mobile video collection terminals in the field of audio and video data transmission. The location and time information of the collection device is a kind of time-varying data, especially time will not stop, and GPS location and time data have specific and regular characteristics Data can be detected and extracted by specific algorithms. In real-time audio and video transmission security applications, including wired network or air wireless transmission, the encryption algorithm of audio a...

AI Technical Summary

Problems solved by technology

For example, in the field of audio and video data transmission, GPS technology has been widely used on mobile video collection terminals. The location and time information of the collection equipment is a kind of time-varying data, especially the time will not stop, and the GPS location and time data have specific regular characteristics. Data can be detected and extracted through specific algorithms. In the field of real-time audio and video transmission security applications, including wired network or air wireless transmission, the encryption algorithm of audio and video data usually adopts the stream cipher algorithm. The advantage of the stream cipher algorithm is that it can be implemented quickly. However, precise synchronization is required to receive complete key information to decrypt. Once misalignment occurs, subsequent information cannot be decrypted, affecting normal data exchange.

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