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Chaotic video encryption method based on sliding encryption window

An encryption method and video technology, which can be applied to secure communication through chaotic signals, modification of digital video signals, digital transmission systems, etc., can solve the problems of large encryption calculation overhead, and achieve high encryption efficiency, security, and fast computing speed. Effect

Active Publication Date: 2018-06-22
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0005] The present invention provides a chaotic video encryption method based on a sliding encryption window in order to solve the problems of large encryption calculation overhead and the contradiction between the rapidity and security of video encryption in the existing video encryption method

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  • Chaotic video encryption method based on sliding encryption window
  • Chaotic video encryption method based on sliding encryption window
  • Chaotic video encryption method based on sliding encryption window

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specific Embodiment approach 1

[0034] Specific implementation mode 1. Combination Figure 1 to Figure 7 Describe this embodiment, the chaotic video encryption method based on the sliding encryption window, according to the H.264 video coding standard, the encryption block diagram of the encryption method in this embodiment is as follows figure 1 As shown, the encryption flow chart is as follows figure 2 shown.

[0035] Select bus video data with a size of 352 × 288. This embodiment operates under the JM8.6 basic mode of H.264. The video length is 30 frames, the entropy coding mode is CAVLC, and the I frame interval is 8, wherein the 20th frame is extracted. Frame raw image such as Figure 4 , the ciphertext image of the 20th frame after encryption is as follows Figure 5 shown.

[0036] In this embodiment, the user key is composed of four parts: 1. the control parameters of the composite chaotic map, 2. the initial value of the composite chaotic map, the control parameters of the three-cell quantum cel...

specific Embodiment approach 2

[0078] Specific embodiment two, combine Figure 1 to Figure 7 , based on the chaotic video encryption method, according to the H.264 video coding standard, the encryption block diagram of the encryption method in this embodiment is as follows figure 1 As shown, the encryption process is shown in the flow figure 2 . Select the "calendar" video data with a size of 176×144. This embodiment operates under the JM8.6 basic mode of H.264. The video length is 100 frames, the entropy coding mode is CAVLC, and the I frame interval is 8. 90 frames of original images such as Figure 6 , the ciphertext image of the 90th frame after encryption is as follows Figure 7 shown.

[0079] In this embodiment, the user key is composed of four parts: ① the control parameters of the compound chaotic map, ② the initial value of the compound chaotic map, ③ the control parameters of the three-cell quantum cellular neural network, and ④ the initial value of the three-cell quantum cellular neural net...

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Abstract

The invention relates to the technical field of video encryption, and provides a chaotic video encryption method based on a sliding encryption window, which aims to solve the problems of high encryption computation overhead, contradiction between a high speed and high safety of video encryption and the like of the conventional video encryption method. The method has the advantages that a chaotic system and video encryption are combined, so that an enormous key space and extremely high key sensitiveness are achieved, the anti-attack performance of the encryption method is improved, and complexnon-linear dynamic properties are obtained; while high safety is guaranteed, the sliding encryption window is utilized to select the optimum and the most effective encryption key data, so that the operation speed and the encryption efficiency are high; and compared with a selective video encryption method without the sliding encryption window, the method can reduce the computation overhead by above 86%.

Description

technical field [0001] The invention relates to the technical field of video encryption, in particular to a fast chaotic video encryption method based on a sliding encryption window. Background technique [0002] The rapid development of the Internet and the wide application of digital multimedia information have promoted the rapid development of the media industry. Rich multimedia information is used in various industries such as politics, economy, military affairs, education, medical treatment and news. Video information in multimedia has unique sensory characteristics and is a medium with the most abundant content, which can provide richer and more vivid information than text, sound and graphics. With the maturity of digital video coding technology, the video information flow based on video coding can adapt to the application of various bandwidths, and gradually become an important means for human beings to obtain information, satisfying people's social interaction, learn...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04N19/593H04N19/124
CPCH04L9/001H04N19/124H04N19/593
Inventor 李锦青底晓强从立钢祁晖毕琳任维武杨华民赵建平
Owner CHANGCHUN UNIV OF SCI & TECH
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