Off-Chain Storage Server for Encrypted Data Recovery
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Solution Overview
Problem
Individual blockchain transactions have limited data storage capacity, typically in the order of single kilobytes, which restricts the amount of data that can be stored within a blockchain network, necessitating off-chain backend storage solutions to accommodate larger data volumes required by decentralized applications (DApps).
Innovation Solution
Implementing off-chain decentralized storage systems that utilize arbitrary backend storage providers, such as cloud or local storage, with a storage server interfacing these providers to offer a consistent interface to DApps, allowing users to manage their data and grant authorization to multiple DApps while maintaining control over encrypted data through cache-specific private keys and encryption keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If off-chain backend storage is implemented to increase storage capacity, then storage volume is improved, but data security and access control become more complex
Solution Approach 1:
A storage server acts as an intermediary component between the blockchain network and backend storage providers. The storage server receives data from DApps, manages encryption key storage, handles authorization requests, and coordinates with multiple backend storage providers. This intermediary layer abstracts the complexity of off-chain storage management from DApps while enabling scalable storage capacity through arbitrary backend providers.
2Volume of stationary object
If data is stored off-chain to increase storage capacity, then storage volume is improved, but data security and unauthorized access risks increase
Solution Approach 1:
Data is encrypted before being stored in the backend storage providers. The encryption process occurs prior to storage, ensuring that even if the stored data is accessed unauthorizedly, it remains inaccessible without the decryption keys. The storage server manages key generation, encryption, and secure key storage, implementing security measures in advance rather than attempting to secure already-stored data.
3Adaptability or versatility
If multiple DApps are granted access to shared storage, then storage versatility is improved, but access control complexity increases
Solution Approach 1:
The storage server implements an authorization mechanism where DApps must present valid credentials to access stored data. The server verifies authorization tokens, checks access permissions, and provides feedback by granting or denying access requests. This feedback-based access control enables multiple DApps to share storage resources while maintaining security through automated verification and permission management.
Data Source
AI summary
A storage server communicating with a backend storage provider, such as a cloud-based provider, performs processes for backing up encrypted data in the backend storage in a data cache shared by multiple decentralized applications, to allow a user of a frontend client to revert to a prior version of an encrypted file if that encrypted file has been compromised by one of the decentralized applications, where the storage server performs no encryption of the data and is not exposed to encryption keys.