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H.265 coding standard-based video encryption algorithm

A coding standard and encryption algorithm technology, which is applied in the field of video encryption algorithm to achieve high security and good encryption effect.

Inactive Publication Date: 2017-11-24
SHENZHEN ELINK SMART CO LTD
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Problems solved by technology

[0004] In order to solve the current security problems of video content, this research is devoted to the study of encryption algorithms that can protect video content

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  • H.265 coding standard-based video encryption algorithm
  • H.265 coding standard-based video encryption algorithm
  • H.265 coding standard-based video encryption algorithm

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] see figure 1 and figure 2 , a kind of video encryption algorithm based on H.265 encoding standard of the present invention, comprises the following steps,

[0032] S1: Determine the MV prediction technology Merge mode of the H.265 coding standard. There are 5 predicted MVs in the candidate list of the Merge mode, and the corresponding index numbers are {0, 1, 2, 3, 4}, which The number of index numbers that can be encrypted is 5; a chaotic pseudo-random sequence generator is used to generate a bit key for the random sequence, and the bit key is 1 or 0;

[0033] S2: If the bit key is 1, s...

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Abstract

The invention provides an H.265 coding standard-based video encryption algorithm. The video encryption algorithm comprises the following steps of first, determining a Merge mode of an MV prediction technology of an H.265 coding standard, and generating a bit key for a random sequence with a chaos pseudo-random sequence generator, wherein a candidate list of the Merge mode has five predicted MVs, and the bit key is 1 or 0; second, if the bit key is 1, jumping to a third step, if not, jumping to a fifth step; third, if index=4, executing a seventh step, if not, executing a fourth step; fourth, performing exclusive OR operation on a chaos pseudo-random sequence of two bits and index, assigning a new value to index, and executing a sixth step; fifth, executing 4-inex operation, assigning a new value to index, wherein if bit=0, a new index is equal to 4-index, index being 2 fail to be encrypted; and sixth, inputting a new index into an entropy encoder, completing Merge index encryption, and performing entropy coding encryption. Through adoption of the video encryption algorithm, the video content is further scrambled at the cost of slightly increasing the code rate and lowering the compression performance.

Description

[technical field] [0001] The invention relates to the technical field of video encryption algorithms, in particular to a video encryption algorithm based on the H.265 encoding standard with good security and compatibility. [Background technique] [0002] In the past decade, with the development of multimedia and network technologies, various video applications have emerged, such as video on demand, video conferencing, video surveillance, medical imaging and digital photography. These applications are used in military, political, social, economic, personal life and other aspects. Due to the large amount of video information, the transmission and storage of video information has become a hot research topic today. However, in the process of video information transmission and storage, if criminals illegally steal or destroy video content, it will cause serious losses at the level of national security or at the level of personal privacy. Therefore, the protection of video conte...

Claims

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Application Information

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IPC IPC(8): H04N19/13H04N19/70H04L9/00H04L9/08
CPCH04N19/70H04L9/001H04L9/0869H04N19/13
Inventor 任亮李文祥郭俊峰
Owner SHENZHEN ELINK SMART CO LTD
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