Blockchain Content Delivery Security via Playback Verification
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Solution Overview
Problem
Current content delivery configurations are reactive and fail to prevent piracy, as they rely on watermarking after piracy has occurred, rather than providing preventative security measures.
Innovation Solution
A blockchain configuration is implemented to securely deliver content by generating a unique blockchain for each playback system, encrypting content with a content encryption key, and using public keys to ensure that content is verified at the intended destination before playback, with automated auditing to track and prevent excessive playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If watermarking configurations are used to track piracy, then piracy tracking capability is improved, but security effectiveness deteriorates because piracy has already occurred
Solution Approach 1:
The patent implements preliminary action by establishing blockchain-based security mechanisms before content delivery occurs. The system pre-configures encrypted content with blockchain-verified recipient identities and playback permissions, preventing piracy before it can happen rather than detecting it after the fact through watermarking.
Solution Approach 2:
The blockchain acts as an intermediary between content providers and playback systems, providing a trusted verification layer that validates recipient authority and tracks playback without requiring reactive watermarking. This intermediary mechanism enables proactive security verification while maintaining precise tracking capabilities.
2Reliability
If blockchain verification is implemented for all playback systems, then security against piracy is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by creating a standardized blockchain verification protocol that serves multiple functions: identity verification, playback authorization, and piracy prevention. This single multi-functional system replaces what would otherwise require separate complex security mechanisms for each function.
Solution Approach 2:
The system changes parameters by using cryptographic key pairs and blockchain hash values instead of traditional complex authentication systems. These parameter changes enable secure verification through mathematical properties rather than complex procedural checks, reducing operational complexity while maintaining high security.
3Reliability
If content is encrypted with public keys for secure delivery, then security is improved, but processing time increases
Solution Approach 1:
The patent segments the encryption process into two phases: initial content encryption with symmetric keys (fast) and blockchain-based key distribution with public keys (secure but slower). This segmentation allows the system to benefit from both fast symmetric encryption and secure asymmetric key management without the full overhead of public key encryption for every operation.
Solution Approach 2:
Public key encryption and blockchain verification are performed in advance during content delivery setup, not during actual playback. This preliminary action ensures security is established before time-sensitive playback operations, minimizing processing time delays during actual content usage.
Data Source
AI summary
There is provided a method including receiving a playback system identifier corresponding to a playback system, generating a blockchain corresponding to a content identifier identifying a content, wherein the blockchain is uniquely associated with the content identifier, establishing, in the blockchain, a block corresponding to the playback system identifier, sending an encrypted version of the content to the playback system, and in response to one or more updates to the blockchain by the playback system, providing a content encryption key to the playback system for decrypting the encrypted version of the content.