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Video data encryption method, system, equipment and storage medium

A technology of video data and encryption method, applied in the direction of digital video signal modification, selective content distribution, electrical components, etc., can solve the problem that video encryption security cannot be well guaranteed, and achieve both encoding and decoding efficiency and image content protection. , Improve the efficiency of encryption, the effect of high security

Active Publication Date: 2018-11-27
SUZHOU KEDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing video encryption methods only encrypt the I frame. Although such an encryption method improves the encryption efficiency, it cannot guarantee the security of the video encryption well.

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  • Video data encryption method, system, equipment and storage medium
  • Video data encryption method, system, equipment and storage medium
  • Video data encryption method, system, equipment and storage medium

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Embodiment Construction

[0051] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted.

[0052] During the video transmission process, if the video images are only transmitted, the video volume is very large, which is unacceptable for the existing network and storage. Therefore, a H.264 video compression standard is proposed. A large amount of repetitive information in the video is removed at the sending end and restored at the receiving end, which greatly reduces the video data file. In the H.264 compression sta...

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PUM

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Abstract

The invention provides a video data encryption method, system, equipment and a storage medium. The method comprises the following steps: choosing data of an I macro block of video data; obtaining a residual error block of the I macro block and performing Zigzag scanning on the residual error block to obtain a corresponding one-dimensional sequence of the I macro block; performing encryption treatment on data in the corresponding one-dimensional sequence of the I macro block; performing entropy coding on the encrypted data. According to the method disclosed by the invention, the I macro block is encrypted in a video entropy coding process; compared with a mode of only encrypting an I frame in the prior art, the safety is higher; furthermore, the amount of the encrypted data is smaller thanthat of encrypting the whole video file, and the encryption efficiency is improved; an original syntactic structure is not damaged by the encrypted data, and the encrypted data still can be decoded and played by a decoder.

Description

technical field [0001] The invention relates to the technical field of data encryption, in particular to a video data encryption method, system, device and storage medium. Background technique [0002] H.264 is currently the most widely used international video coding standard. Compared with previous standards, its coding efficiency is about 50% higher than previous standards at the same image quality. It has a wide range of applications, including digital broadcast television, video conferencing, digital storage, and more. [0003] As the application of video conferencing becomes more and more extensive, people's demand for video is also increasing. Followed by the video security requirements. Nowadays, many encryption methods have appeared, such as using traditional cryptography to encrypt the entire video file, or using DCT coefficients to encrypt, or encrypting in the process of entropy coding, etc. Research on the security encryption technology suitable for H.264 is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/88H04N19/91H04N19/176H04N19/46H04N21/2347
CPCH04N21/2347H04N19/176H04N19/46H04N19/88H04N19/91
Inventor 宋文海胡小鹏尚德建顾振华
Owner SUZHOU KEDA TECH