Streaming media encryption and decryption method and device

An encryption method and streaming media technology, which can be applied to secure communications, transmission systems, electrical components, etc. through chaotic signals, and can solve the problems of poor resistance to plaintext attacks, short period length, and reducing the confidentiality of chaotic encryption systems.

Active Publication Date: 2015-04-29
SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Different initial states correspond to different cycles, and the length of the cycle may be very short. This shortcoming reduces the secrecy of the chaotic encrypti

Method used

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  • Streaming media encryption and decryption method and device
  • Streaming media encryption and decryption method and device
  • Streaming media encryption and decryption method and device

Examples

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Embodiment Construction

[0072] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0073] Such as image 3 As shown, a preferred embodiment of the present invention proposes a streaming media encryption method, including:

[0074] Step S101, obtaining original streaming media data, compressing and encoding the streaming media data and sub-packaging;

[0075] The embodiment scheme of the present invention aims at the defects of the chaotic system, combines m-sequence and permutation encryption to improve the anti-deciphering ability of the parameter sequence, overcomes the weak confidentiality of streaming media encryption, and provides a stream with good confidentiality and does not affect the compression rate. Media encryption method, its specific processing flow can be as follows Figure 4 shown.

[0076] First, the original data is compressed and encoded and divided into packages, and then sev...

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Abstract

The invention relates to a streaming media encryption and decryption method and device. The encryption method comprises the first step of acquiring original streaming media data, conducting compression encoding on the streaming media data and subpackaging the streaming media data, the second step of conducting substitution encryption on the subpackaged streaming media data, the third step of conducting chaotic encryption on the streaming media data subjected to substitution encryption, the fourth step of conducting double-layer encryption on chaotic parameters during chaotic encryption through m sequences and substitution encryption, and the fifth step of subpackaging and transmitting the streaming media data subjected to chaotic encryption again. The method aims at overcoming the defects of a chaotic system, the m sequences and substitution encryption are combined to improve the anti-decoding capability of parameter sequences, the weak confidentiality of streaming media encryption is overcome, and the compression ratio of streaming media is not affected.

Description

technical field [0001] The invention relates to the technical field of network communication and information processing, in particular to a streaming media encryption and decryption method and an encryption and decryption device. Background technique [0002] At present, with the popularization of the Internet and the application of multimedia technology on the Internet, it is urgent to solve the problem of real-time transmission of media files such as video, audio, text, and pictures, so streaming media came into being. [0003] Simply put, streaming media technology refers to the use of streaming to divide multimedia information (video, audio, text, pictures and other media files) into compressed packages through a special compression method, and the streaming media server will compress them in a specific order. The files are sent continuously and in real time, and the client does not need to wait for the entire file to be downloaded, and can play while receiving the data....

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L9/001H04L63/0428H04L63/0457H04L63/0478
Inventor 胡程豪胡朝晖张鑫
Owner SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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