Multimedia Data Encryption Module for Secure Streaming

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Solution Overview

Problem

Existing multimedia data streaming security solutions, such as DRM, often over-secure content, restricting legitimate access and being costly, while failing to prevent unauthorized use on third-party websites, necessitating a more balanced and cost-effective approach to secure streaming.

Innovation Solution

A method and system that employs a multimedia data encryption module to transform multimedia data into secure streams, using various cryptographic algorithms, and a decryption module within the multimedia player to unlock the content only after legitimacy analysis and key transmission, allowing secure streaming without overly restricting access or incurring high costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If DRM solutions are used to secure multimedia data streaming, then security protection is improved, but user access convenience deteriorates and costs increase

Engineering Contradiction:
Improvesecurity protectionVSAvoiduser access convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent implements a lightweight encryption system that uses simple cryptographic algorithms (AES, DES, RSA) instead of complex DRM infrastructure. The encryption is applied directly to the video stream using software-based methods that do not require expensive licensing servers or complex key management systems, making the solution cost-effective and easier to implement while maintaining security.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent introduces an intermediary encryption layer that processes video streams between the source and player without requiring direct DRM verification. The encryption module acts as a mediator that transforms the video data into secured format using cryptographic algorithms, allowing legitimate access without the overhead of traditional DRM verification servers and licensing infrastructure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If DRM solutions are used to secure multimedia data streaming, then security protection is improved, but overhead costs increase

Engineering Contradiction:
Improvesecurity protectionVSAvoidoverhead costs
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent replaces expensive DRM licensing infrastructure with affordable cryptographic algorithms that can be implemented using standard software libraries. The system uses well-established encryption methods (AES, DES, RSA) that are freely available and do not require purchasing licenses or building complex verification server infrastructure, significantly reducing overhead costs while maintaining security protection.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The encryption and decryption processes are implemented directly in the video player and source application using software-based cryptographic operations. This self-service approach eliminates the need for external DRM verification servers and licensing management systems, allowing the system to handle security independently without incurring additional infrastructure costs or ongoing licensing fees.

Inventive Principle:
Principle #25Self-service

3Object-affected harmful factors

If strong encryption is applied to multimedia data, then unauthorized access is prevented, but legitimate access becomes more restricted

Engineering Contradiction:
Improveunauthorized access preventionVSAvoidaccess flexibility
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic key management where encryption keys can be changed between video segments or frames. This allows the system to provide strong security when needed while maintaining flexibility for legitimate access. The encryption strength and key persistence can be adjusted based on the specific content and access requirements, enabling the system to adapt between strong protection and convenient access as needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent allows modification of encryption parameters such as key length, algorithm type, and key persistence duration to balance security and accessibility. By changing these parameters, the system can provide strong encryption for sensitive content while using weaker or no encryption for public content, thereby maintaining both unauthorized access prevention and access flexibility across different scenarios.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS9154815B2Method and system for securing multimedia data streamed over a network
Publication Date: 2015.10.06 ADEIA MEDIA HOLDINGS INC
  • US9154815B2 patent drawing
  • US9154815B2 patent drawing
  • US9154815B2 patent drawing

AI summary

There is provided a method of securing multimedia data for streaming over a network comprising receiving the multimedia data from a server, transforming the multimedia data into secure multimedia data using a security key associated with the multimedia data, storing the security key associated with the multimedia data, streaming the secure multimedia data to the destination server. The method further comprises receiving decoding solution requests associated with the multimedia data from one or more multimedia players for playing the multimedia data and transmitting the security key associated with the multimedia data to each of the multimedia players.