A video data encryption and decryption method and device
A technology of video data and encryption method, which is applied in the direction of digital video signal modification, selective content distribution, electrical components, etc., can solve problems such as high computational complexity, low computational complexity, real-time performance, and potential safety hazards, and achieve The effect of low computational complexity
Active Publication Date: 2017-11-24
HARBIN HYTERA TECH CORP
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Problems solved by technology
[0005] The higher the computational complexity of the encryption and decryption method, the higher the security. At the same time, the larger the amount of calculation data for encryption and decryption, the more difficult it is to realize the real-time performance of video data transmission; because people have the most obvious requirements for real-time performance, so , the existing encryption and decryption methods are based on the matrix change method to encrypt and decrypt video data. This method has low computational complexity and real-time performance can be guaranteed, but its security has great hidden dangers
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[0079] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.
[0080] see figure 1 , shows the flow chart of Embodiment 1 of video data encryption in the embodiment of the present invention. This embodiment is described from the perspective of the video data sending end. The method may include:
[0081] Step 101, receiving a data frame output by an encoder, where the data frame includes a feature code.
[0082] The sending end first establishes a video data service with the receiving end, and then the sending end processes the video data to be sent sequentially, first encodes the video data, then encrypts it, and finally packs the encrypted data frame and sends it out. Therefore, the encryption process is to encrypt the data frame after the encoding process, in fact, the d...
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The embodiment of the present invention discloses a video data encryption and decryption method and device, wherein the encryption method includes: receiving a data frame output by an encoder, the data frame containing a feature code; mapping the feature code in the data frame into a pseudo feature code Obtaining the mapped data frame; sending a scrambling request to the system, receiving information sent by the system in response to the scrambling request; using the information to scramble the mapped data frame to obtain encryption Data Frame. The processing process of the decryption method is the inverse processing of the encryption method; the technical scheme of the present invention can improve the security of video data, and the operation complexity of the encryption and decryption method is low.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to a video data encryption and decryption method and device. Background technique [0002] With the development of wireless communication technology, users' demand for private network communication has shifted from pure voice service to multimedia service, especially video service. Compared with ordinary data file encryption and decryption, video data encryption and decryption has the characteristics of large amount of encryption and decryption data and special data structure. Therefore, the encryption and decryption method of video data has stricter requirements on computational complexity and security. Data services have certain requirements for real-time performance. Therefore, the encryption and decryption method must find a balance point between the two performances of computational complexity and security. [0003] Security: Security is the primary requirement fo...
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IPC IPC(8): H04N19/46H04N21/2347H04N21/4405H04N21/4408
Inventor 陈家鑫
Owner HARBIN HYTERA TECH CORP