Peer-to-Peer Memory Sharing With Signed Content Access Logs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing memory systems face high introduction costs and security risks in content management, particularly when using servers for centralized management, and manual tracking of shared storage media leads to loss or unauthorized access.
Innovation Solution
A memory system with a nonvolatile memory and controller that manages content access through a key pair system, including public and private keys, and maintains access logs with signature data, enabling secure peer-to-peer communication among users within a group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized server management is used for digital content, then content access control is improved, but introduction cost and system complexity increase
Solution Approach 1:
The patent extracts the management function from a centralized server and distributes it to individual memory systems. Each memory system independently manages its own content access control using local key pairs, eliminating the need for complex centralized server infrastructure while maintaining security.
Solution Approach 2:
Each memory system autonomously performs content management operations including generating key pairs, encrypting content, verifying access rights, and managing lending records without requiring external server intervention. This self-service approach reduces system complexity while maintaining reliable access control.
2Quantity of substance
If multiple storage media are used to share content, then storage capacity is improved, but management complexity and security risks increase
Solution Approach 1:
The patent segments the content management system into independent units distributed across multiple storage media. Each storage medium maintains its own encrypted content and access control data, allowing parallel access without centralized coordination complexity.
Solution Approach 2:
The patent changes the management approach from manual tracking to automated cryptographic verification. Each storage medium uses unique key pairs and encrypted metadata to automatically verify borrower identity and track content location, reducing management complexity despite increased storage capacity.
3Ease of operation
If manual lending tracking is used for shared content, then operation simplicity is improved, but reliability and security deteriorate
Solution Approach 1:
The patent implements automated feedback mechanisms where the memory system continuously monitors and records content access events. When content is accessed, the system automatically verifies the borrower's identity using cryptographic signatures and updates lending records, providing real-time security feedback without manual intervention.
Solution Approach 2:
The patent replaces manual mechanical tracking (physical lending lists) with automated electronic verification systems. The memory system uses cryptographic key pairs and digital signatures to automatically verify borrower identity and track content location, significantly improving security while maintaining ease of operation through automated processes.
Data Source
AI summary
According to one embodiment, a memory system is used by a first user that belongs to a group, and includes a controller. The controller manages a first key pair that includes a first private key and a first public key and stores, in a nonvolatile memory, one or more pieces of content information that include one or more contents, respectively. When use of a first content among the one or more contents by the first user has been requested, the controller generates a first access log related to the use, generates first signature data for the first access log by using the first private key, stores the first access log and the first signature data in the nonvolatile memory, and transmits the first access log and the first signature data to the one or more other memory systems.