Lightweight video stream encryption, decryption method and encryption and decryption method based on bit operation

Abstract

The invention discloses a light-weight video stream encryption and decryption method and encryption and decryption method based on bit operations, a light-weight video stream encryption method based on bit operations, and encrypts plaintext video data based on bit operations to obtain encrypted video data The encryption process is as follows: generate a random feature key plaintext data, encrypt the feature key plaintext data through md5 to generate feature key ciphertext data; this feature key ciphertext data is exchanged to the video stream receiver through the network signaling channel Side; adopt the technical solution of the present invention: 1. Compared with the traditional encryption method, the video stream mode based on bit operation is simpler and more portable. 2. Due to the simple encryption method and the simple bit operation method of the present invention, it is more efficient for real-time video stream encryption. 3. The present invention also guarantees the security of the video stream. If all key files are stolen in time, only the uncracked encryption method and the uncracked characteristic key ciphertext data, the video encrypted data is still safe.

Description

technical field [0001] The invention relates to the technical field of video stream encryption and decryption, in particular to a light-weight video stream encryption and decryption method and an encryption and decryption method based on bit operations. Background technique [0002] In the current network information age, we are particularly concerned about the security and confidentiality of data, such as surveillance video, video on demand, video conferencing, etc. Traditional encryption algorithms such as DES (Data Encryption Standard) and AES (Advanced Encryption Standard) mainly perform complex calculations and replacements on data by keys to achieve data encryption, but for video stream data with a huge amount of data, traditional encryption The algorithm is guaranteed in terms of security, but it is difficult to implement in software in terms of encryption speed. At the same time, after encryption, the amount of media data will increase. As far as video streams are c...

AI Technical Summary

Problems solved by technology

Traditional encryption algorithms such as DES (Data Encryption Standard) and AES (Advanced Encryption Standard) mainly perform complex calculations and replacements on data by keys to achieve data encryption, but for video stream data with a huge amount of data, traditional encryption The algorithm is guaranteed in terms of security, but it is difficult to implement in software in terms of encryption speed. At the same time, after encryption, the amount of media data increases

As far as video streams are concerned, traditional encryption algorithms are not and suitable for

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