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A playback method and technology of a playback system are applied in the field of multimedia playback management to achieve the effect of preventing illegal interception
Active Publication Date: 2022-05-17
ZHENGZHOU XINDA JIEAN INFORMATION TECH
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These possible risks are also unbearable for advertising media companies
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Embodiment 1
[0029] Such as figure 1 As shown, the present embodiment proposes a multimedia safe playing method, the method comprising:
[0030] Step 1, the cloud platform and the multimedia terminal agree on the data extraction rules for the multimedia data to be used for the calculation of the summary value;
[0031] Step 2, the cloud platform receives the uploaded multimedia data;
[0032] Step 3, the cloud platform calculates the full summary value of the multimedia data to obtain the first full summary value, and simultaneously extracts each small piece of data from the multimedia data according to the data extraction rules, and combines them to form a data collection, Then perform summary calculation on the data collection to obtain the first summary value;
[0033] Step 4, the cloud platform packs the multimedia data, the first full digest value, and the first brief digest value to form a network data packet, and signs the network data packet through its own private key to form N...
Embodiment 2
[0066] Such as figure 2 As shown, the present embodiment proposes a multimedia safe playback system, the system includes: a cloud platform and a multimedia terminal, the cloud platform and the multimedia terminal are connected through network communication; Data extraction rules computed on brief summary values;
[0067] The cloud platform is used to receive the uploaded multimedia data, and calculate the full summary value of the multimedia data to obtain the first full summary value, and simultaneously extract each small piece of data from the multimedia data according to the data extraction rule , and combine to form a data collection, and then perform summary calculation on the data collection to obtain a first summary value; it is also used to package the multimedia data, the first full summary value, and the first summary summary value to form a network data packet, and sign the network data packet by its own private key to form a network data packet signature file and...
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Abstract
The present invention proposes a multimedia safe playback method and system. When a multimedia terminal receives multimedia data for the first time, it needs to calculate a full digest value for all multimedia data, and compare the calculated second full digest value with the received Compare the first full digest value. If they are consistent, it means that the multimedia data has not been tampered with. Otherwise, it has been tampered with. After the multimedia data is received for the first time and before each playback, the multimedia data needs to be hash verified. , before each play, the present invention only needs to extract the key data from the multimedia data to calculate the brief summary value, and compare the calculated second brief summary value with the received first brief summary value, and if they are consistent, then It shows that the multimedia data has not been tampered with, otherwise, it has been tampered with, and the hash verification before each playback can be realized through the simplified summary value, which can effectively save the preparation time in the early stage and reduce the complexity of the hash verification.
Description
technical field [0001] The invention relates to the technical field of multimedia play management, in particular to a method and system for safe multimedia play. Background technique [0002] At present, the use of advertising media systems is becoming more and more extensive. There are more and more advertising playback devices (such as LED screens) in buses, buildings, elevators, outdoors and other places. Advertising playback devices broadcast different information every day. However, with the rapid expansion of the market, the influence of the security threats caused by it is getting wider and wider. Once the broadcast media information is maliciously interfered, tampered with or even replaced, it will have a bad influence on the public audience media, and even affect social stability. At the same time, whether the content played by the advertising playback equipment is legal and orderly, and whether it will be tampered with by outside criminals to play some illegal con...
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