Network Element Stream Processing for Selective Media Decryption
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Solution Overview
Problem
Existing methods struggle to efficiently identify and decrypt encrypted video data streams in a network environment, especially when the number of information streams is large, due to practical constraints on physical footprint and electrical power.
Innovation Solution
A network element processes information streams to identify suspected bearers of encrypted media, establishes control streams with nodes, obtains and sends cryptographic keys, and decrypts the encrypted media using these keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all information streams are processed individually and in parallel to identify encrypted video data, then the probability of detecting encrypted video streams increases, but the device complexity and power consumption increase significantly
Solution Approach 1:
The patent segments the information streams into two categories: control streams and data streams. By separating these stream types, the system focuses decryption resources only on data streams, which are more likely to contain encrypted video content. This segmentation reduces the overall processing burden while maintaining detection accuracy for encrypted video streams.
Solution Approach 2:
Instead of applying decryption to all information streams equally, the patent applies partial action by selectively processing only data streams that are suspected of containing encrypted video content. This selective approach reduces computational resources and device complexity while still achieving the goal of detecting encrypted video streams.
2Measurement precision
If all information streams are processed individually and in parallel, then the detection capability for encrypted video streams improves, but the power consumption becomes unsustainable for covert operations
Solution Approach 1:
The patent segments the information streams into control streams and data streams, applying decryption processing only to data streams. This segmentation eliminates unnecessary power consumption associated with processing control streams, thereby reducing overall power usage while maintaining detection capability for encrypted video content.
Solution Approach 2:
The system performs partial processing by applying decryption only to suspected data streams rather than all streams. This partial action significantly reduces power consumption while preserving the ability to detect encrypted video streams, making the system viable for covert operations with limited power availability.
3Speed
If decryption is attempted at line speed for multiple streams, then the real-time processing capability is maintained, but the device footprint and power requirements become impractical
Solution Approach 1:
The patent segments the processing workload by separating control streams from data streams, and further segments data streams into those suspected of containing encrypted video versus other data streams. This segmentation allows real-time decryption to be applied only to the necessary subset of streams, reducing the physical footprint required for processing while maintaining real-time speed.
Solution Approach 2:
The system applies decryption processing partially, only to data streams suspected of containing encrypted video content, rather than attempting line-speed decryption of all streams. This partial processing approach reduces the computational burden and physical footprint while still achieving real-time decryption capability for the relevant streams.
Data Source
AI summary
A network element and a method for execution by such network element. The method comprises processing a plurality of information streams transiting the network element to identify a particular data stream as a suspected bearer of encrypted media, the particular data stream established between a first node and a second node. The method also comprises establishing a first control stream with the first node and a second control stream with the second node, wherein the first control stream is established using credentials associated with the second node. The method further comprises obtaining a cryptographic key sent by the first node over the first control stream and destined for the second node, sending the cryptographic key to the second node over the second control stream, obtaining encrypted media sent by the second node and destined for the first node and decrypting the encrypted media based on the cryptographic key.