Video secure communication method based on integer field chaos

Abstract

The invention discloses a video chaos secure communication method based on integer field chaos. The method comprises the following steps: establishing a six-dimensional integer field discrete time chaos system; iterating three variables x<1><(d)>(k), x<2><(d)>(k) and x<3><(d)>(k), and converting the iterated variables into binary digital information through digital information encryption equipment; performing encryption operation on information of a transmitting end; transmitting cipher text values of red, green and blue video signals from the transmitting end to a receiving end through a channel; and decrypting the information of the receiving end. Real-time encryption and decryption of videos are implemented by adopting an integer field chaos system, so that the problems of large video data operation amount and complex algorithm are solved. Since a cascade closed-loop principle is adopted, a transmitting end system and a receiving end system have completely the same driving signals; strict synchronization can be realized without being influenced by information size adjustment; and decrypted information has a very high reduction degree under the condition that parameters of the transmitting end and the receiving end are matched.

Description

technical field [0001] The invention relates to a video chaos encryption and decryption method, in particular to a video security communication method based on integer domain chaos. Background technique [0002] When chaotic motion is harmful, chaos control is considered to weaken or eliminate the chaotic behavior of the system through some control means. However, not all chaotic behavior is harmful. Since the OGY method was proposed in 1990, chaos control has become a research hotspot. Recent research has shown that chaotic motion can also be useful in certain circumstances. For example, encryption and decryption of voice, image, video or other multimedia data based on chaos. Therefore, in recent years, the research on system chaos (changing the original non-chaotic dynamical system into a chaotic system, or enhancing the existing chaotic method) has attracted the attention of many scholars. [0003] In the field of information security in recent years, both traditional...

AI Technical Summary

Problems solved by technology

However, the existing discrete or continuous-time chaotic systems are based on real-number domain operations, so there are defects such as large video data operations and complex algorithms, resulting in slow operation speeds.

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