Quantum Encryption Key Segmentation for Failure-Tolerant Communication
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Solution Overview
Problem
Existing quantum encryption communication systems face issues with failure tolerance due to intermediate nodes being single points of failure and security breaches when unauthorized eavesdroppers steal parts of the encryption key, leading to compromised communication security and increased costs.
Innovation Solution
A quantum encryption communication system distributes encryption key data across multiple paths using superposition and secret distribution methods, ensuring that even if an unauthorized eavesdropper steals part of the data, the encryption key cannot be decrypted, maintaining communication security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If encryption key data is transmitted through intermediate nodes to extend communication distance, then communication distance is improved, but reliability deteriorates because intermediate nodes become single points of failure
Solution Approach 1:
The encryption key data is segmented into multiple pieces and distributed through different paths via intermediate nodes. Each node receives only a portion of the key data, so compromise of one node does not result in complete key exposure. The terminal nodes combine their received segments to reconstruct the full encryption key, maintaining both extended communication distance and reliability.
2Length of stationary object
If encryption key data is transmitted through intermediate nodes, then communication distance is improved, but security deteriorates when unauthorized eavesdroppers steal parts of the encryption key
Solution Approach 1:
The encryption key is divided into multiple segments distributed through different intermediate nodes. Even if an eavesdropper compromises one or more nodes, they can only obtain partial key data insufficient for decryption. The full key can only be reconstructed when all terminal nodes combine their segments, preventing security breaches even when communication distance is extended through multiple nodes.
3Length of stationary object
If intermediate nodes are nested to extend communication distance, then communication distance is improved, but device complexity and operational costs increase
Solution Approach 1:
The intermediate nodes perform multiple functions: they relay encryption key segments, provide path diversity for extended communication distance, and inherently contribute to security through their distributed architecture. This multi-functionality reduces the need for additional dedicated security infrastructure, lowering overall device complexity and operational costs while maintaining extended communication distance.
Data Source
AI summary
According to one embodiment, an encryption communication system configures a network with a plurality of nodes, and shares the encryption key between a first node that delivers the encryption key to a first user and a second node that delivers the encryption key to a second user. The first node forms n (n>1) systems of paths to the second node over the network, generates n pieces of first data, distributes the n pieces of first data to the n systems of paths and transmits the n pieces of first data to the second node, and generates the encryption key by superimposing the n pieces of first data. The second node receives the n pieces of first data from the first node via the n systems of paths, and generates the encryption key by superimposing the n pieces of first data.