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A blockchain-based double authentication and hierarchical encryption method for video frame data

A technology of video frame data and encryption method, applied in the field of video authentication, can solve the problems of invisibility and robustness, and achieve the effect of facilitating classification management, ensuring non-tampering, and ensuring security.

Active Publication Date: 2021-03-23
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantages are simple and direct, easy to implement, and its disadvantages are invisibility and poor robustness [16]

Method used

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  • A blockchain-based double authentication and hierarchical encryption method for video frame data
  • A blockchain-based double authentication and hierarchical encryption method for video frame data
  • A blockchain-based double authentication and hierarchical encryption method for video frame data

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Embodiment Construction

[0123] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0124] figure 1 The overall processing flow chart of the H.264 video in the present invention is given.

[0125] Such as figure 1 As shown, method M100 starts from step S110, step S120 reads the video file to be processed, step S130 decodes the H.264 encoded video file in this embodiment, and obtains 470 frames of frame data with a resolution of 960*540; select All 31 key frames (I frames) data frame 1 , frame 2 ,...,frame 31 . Step S140 performs a hierarchical encryption operation on the video frame data. Step S150, Step S160, Step S170, and Step S180 respectively perform the signature generation, saving to the blockchain, signature embedding, and signature verification operations mentioned later on the video to achieve the purpose of online and offline dual authentication of video integrity and authenticity . The method M100 end...

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PUM

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Abstract

A blockchain-based double authentication and hierarchical encryption method for video frame data; generate digital signatures for video frame data through public keys and hash algorithms (such as SM2, SM3); embed digital signatures in the frequency domain through encoding based on relative size , realize offline verification; realize online verification by saving the digital signature to the block chain; realize hierarchical encryption of video frame data through the control of the bit plane. The invention can perform hierarchical encryption on the H.264 coded video, and digital signature embedding and verification; the invention only needs to save one file, and can realize the decryption effect of multiple definitions of the video. By using the invention, video files can be encrypted to protect content privacy, and at the same time, a preview function can be provided, and different levels of authority can be decrypted to obtain videos with different definitions. Double authentication mechanism (online verification, offline verification) provides authenticity and integrity detection of video files.

Description

technical field [0001] The invention belongs to the technical fields of video authentication, video encryption, block chain and information security, and specifically relates to video frame data authentication and video encryption methods. Background technique [0002] In today's era of rapid information development, smart surveillance cameras have become the best choice for many administrative agencies, companies and families to ensure security because of their functions such as remote monitoring and recording video; Communication and video dynamic authentication and other fields are more and more widely used, and the security problems of video data are also becoming more and more serious [1]. [0003] At present, the security problems of video stream data are intensifying, which mainly include: the insecurity of remote transmission of network video surveillance system, that is, the integrity, availability and confidentiality of data in the transmission process may be destr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L9/18H04L29/06H04N19/467H04N21/2347
CPCH04L9/3297H04L9/3247H04L9/3236H04L63/105H04L63/0457H04L63/205H04L9/065H04N21/2347H04N19/467H04L2209/608H04L9/50
Inventor 赵逸文苏明文周之刘晓光
Owner NANKAI UNIV