Selective Video Frame Encryption for Transmission Efficiency
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Solution Overview
Problem
Current video data transfer methods either lack encryption, making data vulnerable to interception, or require full encryption and decryption of each image frame, leading to decreased efficiency.
Innovation Solution
Implementing selective encryption of image frames based on predetermined conditions, where encryption identification information is included in the encapsulation, allowing only encrypted frames to be decrypted, reducing unnecessary processing and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full encryption is applied to each image frame, then security is improved, but processing efficiency deteriorates
Solution Approach 1:
The patent segments the video stream into individual image frames and applies encryption selectively to specific frames rather than encrypting all frames uniformly. This segmentation allows the system to encrypt only necessary frames (those containing sensitive information) while leaving other frames unencrypted, thereby maintaining security for critical data while improving overall processing efficiency.
Solution Approach 2:
The patent implements local quality by applying different encryption treatments to different parts of the video stream. Specifically, certain image frames are encrypted with full encryption while other frames are encrypted with simplified or no encryption based on their content characteristics. This localized approach ensures that security is strengthened where needed without unnecessarily burdening the entire video stream with heavy encryption processing.
2Productivity
If no encryption is used, then processing efficiency is maintained, but data security deteriorates
Solution Approach 1:
The patent applies partial encryption action by encrypting only a subset of image frames that contain sensitive information rather than encrypting all frames. This partial action approach provides sufficient security protection for critical data while avoiding the excessive processing overhead that would result from encrypting every frame, thus maintaining a balance between security and efficiency.
3Productivity
If encryption identification information is included in encapsulation, then decryption efficiency is improved, but data packet size increases
Solution Approach 1:
The patent performs preliminary action by including encryption identification information in the encapsulation phase before transmission. This allows the receiving device to identify encrypted frames in advance and prepare appropriate decryption operations, improving decryption efficiency. The identification information is embedded in the packet structure, enabling quick recognition and processing without requiring additional real-time analysis during decryption.
Data Source
AI summary
One embodiment provides a system for efficiently and securely encrypting, transmitting, and decrypting video data, including selective encryption of image frames. During operation, the system obtains by a content-transmitting device, an image frame which is used to form a video stream. In response to determining that the image frame satisfies a predetermined condition for encryption, the system encrypts the image frame based on an encryption algorithm. The system encapsulates the encrypted image frame based on encapsulation information. The system includes encryption identification information for the image frame in the encapsulation information.