Cross Domain Key Management for Blockchain Security
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Solution Overview
Problem
Existing key management systems for blockchain networks face challenges in securing transactions and maintaining security while reducing transaction times, particularly in cold wallets that require human intervention.
Innovation Solution
Implementing a cross-domain solution (CDS) that isolates offline key storage systems from the internet, allowing online and offline components to interact securely through a CDS, which includes data diodes for controlled data transmission, enhancing security and reducing transaction times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If offline key storage systems are isolated from the internet, then security is improved, but transaction time increases due to manual intervention requirements
Solution Approach 1:
A cross-domain secure communication system acts as an intermediary between offline key storage systems and online transaction platforms. This mediator enables automated secure key access without requiring manual human intervention, thus reducing transaction time while maintaining the security benefits of offline storage isolation.
Solution Approach 2:
The system performs preliminary setup of secure communication channels and key access protocols before transactions occur. By pre-configuring the cross-domain communication infrastructure, the system eliminates the need for manual intervention during actual transactions, resolving the time delay issue while preserving security.
2Productivity
If automated key management processes are implemented, then transaction time is reduced, but security may be compromised
Solution Approach 1:
The key management system is segmented into distinct offline and online components. The offline portion handles secure key storage and generation, while the online portion manages transaction processing. This segmentation allows automation in the online domain while maintaining security through isolation of the offline key storage, resolving the contradiction between automation and security.
Data Source
AI summary
Methods, systems, and devices for data management are described. A datacenter may include one or more servers and an offline key storage system. The datacenter may receive, via a server and from a multi-party computation (MPC) coordinator, a first request to access a key share associated with an MPC node. The server may transmit a second request for the key share associated with the MPC node via a first cross domain communication path to an offline key storage system. The offline key storage system may verify a digital signature included with the second request. The offline key storage system may transmit a response including the key share that is encrypted using an encryption key associated with the MPC node to the server via a second cross domain communication path. The server may transmit a communication including the encrypted key share to the MPC coordinator.