Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for monitoring hierarchical encryption and decryption of video based on time domain information

A technology for monitoring video and video encryption keys, applied in the field of monitoring video classification encryption and decryption methods and systems, can solve the problems of difficulty in ensuring the security of large-scale and massive video data, large amount of processing data, inconvenient use, etc. The effect of fine-grained control of permissions, reduction of management complexity and the number of key management

Inactive Publication Date: 2018-11-23
CHENGDU SANLING KAITIAN COMM IND
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional method of indiscriminately encrypting the entire video has a large amount of data to process and is inconvenient to use, making it difficult to ensure the security of large-scale massive video data

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for monitoring hierarchical encryption and decryption of video based on time domain information
  • Method and system for monitoring hierarchical encryption and decryption of video based on time domain information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0035] Such as figure 1 with figure 2 As shown, a surveillance video hierarchical encryption and decryption method based on time domain information, the steps of the method are as follows:

[0036] S1: Take the root key of the camera and use the SM3 algorithm to calculate the digest, and generate video seed keys of different importance levels;

[0037] S2: Deriving the corresponding video encryption key through a key derivation function;

[0038] S3: use the video encryption key as the key, and use the SM4 algorithm to encrypt the currently acquired real-time video data;

[0039] S4: When the corresponding video encryption key becomes invalid, jump back to step S2;

[0040] S5: The decryption end sends authentication information to the key management server;

[0041] S6...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for monitoring hierarchical encryption and decryption of a video based on time domain information. The method comprises the following steps: S1, selecting a camera root key to calculate a digest by using an SM3 algorithm, and generating video seed keys of different important levels; S2, deriving a corresponding video encryption key through a key derivation function; S3, encrypting currently acquired real-time video data by taking the video encryption key as a key and using an SM4 algorithm; S4, after the corresponding video encryption key fails, returning to step S2; S5, sending, by a decryption end, authentication information to a key management server; and S6, after the authentication succeeds, acquiring, by the decryption end, corresponding decrypted video data from the key management server. The method allocates a plurality of keys to a video monitoring source content, and divides the time domain information to encrypt the contents of different time periods, thereby reducing the management complexity of the key management server and the number of key management. By using the technology, fine-grained control over video viewing permissions can berealized.

Description

technical field [0001] The invention relates to the technical field of information encryption, in particular to a method and system for hierarchical encryption and decryption of surveillance video based on time domain information. Background technique [0002] In the practical application of the video surveillance system, there are confidential or personal privacy information in the monitoring area, so it is necessary to control the video content hierarchically to achieve different levels of access and operation rights. However, the traditional method of indiscriminately encrypting the entire video has a large amount of data to process and is inconvenient to use, making it difficult to guarantee the security of large-scale massive video data. Therefore, only the fine-grained management of the temporal and spatial importance classification of video content can meet the actual application requirements of security video surveillance, and realize the safe distribution and data c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N21/4408H04N21/4405H04L29/06
CPCH04L63/0428H04L63/08H04L63/083H04N21/4405H04N21/4408
Inventor 吴震张正强唐蕾周彦西
Owner CHENGDU SANLING KAITIAN COMM IND