Method and apparatus for encrypting video data

A technology for video data and scrambling, applied in the field of secure video encryption and fast speed, can solve the problems of partial failure of subjective effects, insufficient information scrambling, and low security, and achieve good encryption subjective effects, fast calculation speed, The effect of low computing resources

Inactive Publication Date: 2008-01-23
湖北鸿云科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common macroblock scrambling algorithms, because the sequences targeted by the scrambling matrix are all original spatial position sequences, so although the speed is fast, the security is acceptable; however, the subjective effect of encryption may be partially invalid, that is, t

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  • Method and apparatus for encrypting video data
  • Method and apparatus for encrypting video data

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Embodiment Construction

[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] The invention is applicable to numerous general purpose and special purpose computing system environments or configurations. Examples: personal computers, server computers, handheld or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, including A distributed computing environment for any of the above systems or devices, etc.

[0037] The invention may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perfo...

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Abstract

The present invention provides an encryption method for a video data, which comprises the following procedures: the macro block information of the video data is abstracted; a primary scrambling matrix is created; the macro block information is scrambled according to the primary scrambling matrix; the scrambling result of the primary scrambling matrix is divided into a plurality of areas, and a relative area scrambling rule for each area is determined; a secondary scrambling matrix for the entire video data is gained according to the collocation result by the coding information and the relative area scrambling rule of the macro block in each area; the scrambling result of the primary scrambling matrix is scrambled again according to the secondary scrambling matrix; a stream data is built and an encryption result is gained. The present invention solves the problem of the existing macro block scrambling algorithm that a partial encryption effect is inadequate, provides a better visual encryption effect, and the known plain text attack is ineffective. In conclusion, the present invention does not increase the stream, the speed is quick, the computing source occupation is low, the security is high, and the present invention is more suitable for the most real time application scene of the video encryption.

Description

technical field [0001] The invention relates to the field of video data processing, in particular to a fast and safe video encryption method and device. Background technique [0002] With the significant development of video compression technology and network technology, network multimedia services such as video on demand, video conferencing, remote video monitoring, and multimedia short messages are becoming more and more popular, and the quality of video data processing is more and more influential. Among them, information security is an important part of multimedia services, so video encryption has become a key research topic in today's multimedia services. [0003] Video encryption is different from traditional cryptography key encryption. In the face of massive video data, traditional RSA (asymmetric encryption algorithm, RSA is the abbreviation of the initials of the three inventors Rivest, Shamir, Adelman), DES (Data Encryption Standard, data encryption standard), an...

Claims

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Application Information

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IPC IPC(8): H04N7/16
Inventor 沈未名万守杰杨黎东郭晓云黄晓平
Owner 湖北鸿云科技股份有限公司
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