Biometric Cryptographic Key Association for NFT Access Control
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Solution Overview
Problem
Current NFT platforms lack effective identity verification and access management systems, which hinders secure and personalized interactions within NFT ecosystems, particularly in ensuring rightful ownership and usage rights of digital assets.
Innovation Solution
A method that associates a biometric identifier with a cryptographic key, where the key is linked to access rights for NFTs, using sensors to verify user identity and manage access rights through a digital wallet, with features like media content viewing, editing, and royalty tracking, and smart contracts for policy enforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biometric verification and cryptographic key association are implemented for NFT access management, then security and identity verification are improved, but system complexity increases
Solution Approach 1:
The patent implements nested security layers by embedding biometric identifiers within cryptographic key structures, which are then associated with NFT tokens. The biometric data is encrypted and stored within the key hierarchy, creating a nested architecture where each layer provides additional security while maintaining a unified access management interface.
Solution Approach 2:
The patent introduces cryptographic keys as intermediary elements that mediate between biometric verification and NFT access rights. Rather than directly linking biometrics to tokens, the system uses cryptographic keys as a secure intermediary layer that translates biometric authentication into token-based access permissions, simplifying the overall system architecture.
2Adaptability or versatility
If multiple access rights and smart contract policies are implemented for token management, then functionality and personalization are improved, but device complexity increases
Solution Approach 1:
The patent creates a universal access rights framework where a single cryptographic key structure can represent multiple access permissions. The system uses standardized smart contract policies that can be applied across different NFT types and platforms, allowing the same technical infrastructure to support diverse access control scenarios including viewing, editing, copying, and transferring rights.
Solution Approach 2:
The patent implements flexible access rights by allowing dynamic modification of token parameters through smart contracts. Access permissions can be changed by modifying policy parameters in the smart contract code, enabling the system to adapt to different scenarios (such as time-limited access, conditional transfers, or royalty distributions) without requiring fundamental system changes.
3Reliability
If biometric data is stored and verified against cryptographic keys, then identity assurance is improved, but information security risks increase
Solution Approach 1:
The patent extracts and separates biometric data from the main cryptographic key storage. Instead of storing raw biometric templates centrally, the system extracts encrypted biometric identifiers and distributes them across secure elements. This extraction reduces the attack surface for biometric data while maintaining the ability to verify identity through cryptographic operations.
Solution Approach 2:
The patent applies preliminary cryptographic hashing and encryption to biometric data before storage. By transforming raw biometric information into irreversibly hashed identifiers and encrypting remaining data with user-controlled keys, the system preemptively neutralizes security risks. Even if storage is compromised, the preliminary cryptographic processing prevents recovery of original biometric data.
Data Source
AI summary
Systems and techniques to facilitate content access within an NFT platform are illustrated. One embodiment includes a method for verifying user identity. The method associates a biometric identifier of a user with: a token; and a cryptographic key, wherein the cryptographic key is associated with a set of access rights to the token. The method obtains, from a sensor, biometric data, wherein the biometric data corresponds to the user. The method verifies whether the biometric data matches the biometric identifier. When the biometric data matches the biometric identifier beyond a pre-determined threshold: the method obtains access to at least part of the cryptographic key; and accesses the token. Access is performed: using the cryptographic key, and according to the set of access rights.