A key synchronization information transmission method based on h.264 video stream
A key synchronization and video streaming technology, applied in the field of video security, can solve the problems of strict authentication process, inability to guarantee video security, reduced user experience, etc., to ensure correctness and real-time performance, good versatility and good real-time performance Effect
Inactive Publication Date: 2018-06-15
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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Problems solved by technology
However, these methods have certain defects, such as strict authentication process and complex permission division, which will lead to serious degradation of user experience and other issues.
[0004] One way to solve the above problem is to encrypt the video content itself to ensure the security of the video transmission process. Even if the video data is stolen, the plaintext video cannot be obtained without knowing the key.
Using encrypted video to protect video security A key issue is the security of the key. If the key is stolen during transmission, or the updated key cannot be synchronized in time, the security of the video cannot be guaranteed.
Traditional key transmission is usually a simple text data transmission, and the key is encrypted and transmitted to the legal entity without considering the association with the encrypted object
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[0017] The H.264 video compression standard is a video compression standard officially announced by ITU-T / ISO in 2003. Due to its excellent performance compared with previous standards, it is called a new generation of video coding standard.
[0018] The encoded video sequence of H.264 includes a series of Network Abstraction Layer Units (NALU, Network Abstraction Layer Unit). Each NALU includes a set of NAL header information corresponding to video encoding and a raw byte sequence payload (RBSP, Raw Byte Sequence Payload). Each RBSP is transmitted as an independent NALU. The information header (one byte) of the NALU defines the type of the RBSP unit, and the rest of the NALU is RBSP data.
[0019] Among the types of RBSP, there is a type called Supplementary Enhanced Information Unit SEI. SEI is enhanced information for video sequence decoding. It mainly provides additional data or synchronization information, which can properly improve synchronization performance or define ...
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The invention discloses a secret key synchronizing information transmission method based on a H.264 video stream. The method comprises steps of: 1) creating a secret key synchronizing structure for being filled with secret key synchronizing inforamtion; 2) enabling a video sending end to recognize the supplementary enhanced information unit (SEI) of each frame of the video stream and filling the user-defined data field of the SEI with the filled secret key synchronizing structure; and 3) enabling a video receiving end to extract the SEI of each frame of the video stream while receiving a video so as to obtain the secret key synchronizing information encrypting the video. The method is good in universality, high in security, low in cost, and high in innovation.
Description
technical field [0001] The invention relates to a key synchronization information transmission method, which is mainly applicable to videos based on the H.264 coding standard. According to the structure of the H.264 video stream, the key synchronization information is embedded in the video frame to transmit the key synchronization information . The invention belongs to the technical field of video security. Background technique [0002] With the development of the security industry, in addition to the video surveillance points built by the public security system, there are also video surveillance systems deployed by operators, developers, enterprises and institutions, which form a huge video surveillance resource, such as the global telecommunications Eye wireless monitoring system, tourist attractions, communities, highways, ports and airlines, buses, schools and other social video monitoring points. However, these video services are vulnerable to man-made attacks in an o...
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IPC IPC(8): H04N21/434H04N21/4405H04N21/6437
CPCH04N21/4342H04N21/4345H04N21/4405H04N21/6437
Inventor 宋烨青芦翔汪明伟魏振宇刘刚孙利民
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI