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Multi-security-level video encryption algorithm based on H.265

A technology of security level and encryption algorithm, applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve the problem that video encryption scheme is difficult to meet the needs of security, so as to improve the utilization rate of network resources and ensure security , the effect of good adaptability

Inactive Publication Date: 2018-11-16
NORTHEASTERN UNIV
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Problems solved by technology

A single video encryption scheme is difficult to meet the security requirements of different scenarios

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  • Multi-security-level video encryption algorithm based on H.265
  • Multi-security-level video encryption algorithm based on H.265
  • Multi-security-level video encryption algorithm based on H.265

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Embodiment Construction

[0044] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] As a new generation of video coding standard, H.265 has a huge impact on UHD video coding.

[0046] The H.265 encoding architecture is similar to the H.264 / AVC architecture. It continues to use the hybrid encoding framework of H.264 prediction and transformation, which mainly includes modules such as macroblock division, intra prediction, inter prediction, transformation, quantization, and entropy coding. Compared with H.264 / AVC, H.265 / HEVC has improved key coding technologies and provided more different tools to reduce the bit rate. The core of the coding layer in the H.265 coding standard is a coding tree unit (Coding Tree Units, CTU), which is similar to a macroblock in H.264. H.265 adopts flexible block division technology, which is the most fundamental difference from the previous coding standard, which improves the coding per...

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Abstract

The invention provides a multi-security-level video encryption algorithm based on H.265, wherein the algorithm relates to the field of video encryption technology. Through analyzing characteristics and security requirement of a video in reality, a traditional single encryption plan is improved. Firstly video types in a network are classified, thereby determining three application scenes. In a first scene, the video quality is fuzzy and visible, such as paid television. In a second scene, the video image is invisible to the unauthorized user, such as a video conference. A third scene is a moreconfidential scene in which hiding of video motion information is required, such as military maneuver. Secondly, an encryption object is selected according to the security requirement. Then, a high-efficiency key generation plan is brought forward. A method of combining chaotic and Hash functions is utilized for obtaining a classifying key. A sub-key is selected for aiming at the parameter characteristic. An XOR operation is performed for realizing encryption. Finally the encrypted video performance is analyzed. A result represents a fact that the presented encryption plan satisfies the requirement in safety and furthermore has high advantages at an efficiency aspect.

Description

technical field [0001] The invention belongs to the technical field of video encryption, and in particular relates to an H.265-based multi-security level video encryption algorithm. Background technique [0002] With the rapid development of computer technology and Internet technology, the application fields of video are more and more extensive, such as digital TV, webcast, video conferencing, video surveillance, etc. However, during the video transmission process, the video content may be stolen or destroyed by criminals, which will pose a great threat to people's lives and social stability. Therefore, the research on video encryption becomes particularly important. H.264 is currently widely used as a coding standard, and its application involves aspects such as personal life, economy, society, politics, and military affairs. With the emergence of high-definition, ultra-high-definition, and 3D videos, existing video coding standards have exposed many problems. For exampl...

Claims

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Application Information

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IPC IPC(8): H04N19/46H04N19/61H04N19/154
CPCH04N19/154H04N19/46H04N19/61
Inventor 朱志良曹晓哲张伟
Owner NORTHEASTERN UNIV
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