Zero-Knowledge Transit Network for Secure Multi-Hop Routing
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Solution Overview
Problem
Existing multi-hop topologies like the TOR protocol suffer from privacy and security vulnerabilities, including exit node manipulation and data pattern analysis, which compromise user privacy and security.
Innovation Solution
A network system employing ingress and egress gateways with zero trust and zero knowledge principles, using honeypot servers to obfuscate traffic and prevent decryption, and implementing multiple secure connections to ensure data privacy even if nodes are compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the TOR protocol uses exit nodes to decrypt and forward data, then data can be transmitted through the network, but the exit node operator can view, modify, or manipulate the data
Solution Approach 1:
The patent segments the network into multiple independent transit nodes, each operating with zero knowledge of the data content. Each node only knows the previous and next hop, preventing any single node (including exit nodes) from viewing or manipulating the data. This segmentation eliminates the trust requirement for exit node operators while maintaining data transmission capability.
Solution Approach 2:
The patent introduces intermediate transit nodes that act as mediators between the source and destination. These intermediaries forward encrypted data without decrypting it, using cryptographic protocols where each intermediate only handles the current hop and passes the encrypted data forward. This intermediary approach prevents direct exposure of data at any single point in the network.
2Loss of information
If the TOR protocol uses multi-hop routing, then traffic can be obfuscated, but timing and packet size patterns can be analyzed to infer user behavior
Solution Approach 1:
The patent applies local quality by making each transit node operate independently with localized knowledge of only its immediate previous and next hops. This local operation prevents any single node from analyzing patterns across the entire multi-hop path, as each node processes data in isolation without access to global routing information or historical traffic patterns.
Solution Approach 2:
The patent changes the parameters of data transmission by using variable packet sizes and timing mechanisms at each hop. The encryption protocol allows for randomized packet characteristics at each transit node, making it difficult for analysts to correlate timing and size patterns across multiple hops to infer user behavior or communication patterns.
3Reliability
If the system uses zero trust and zero knowledge principles, then data privacy is maintained even if nodes are compromised, but the system complexity increases
Solution Approach 1:
The patent implements nested encryption layers where each transit node adds its own encryption layer around the data before forwarding it. This nested structure means that data is encrypted multiple times as it passes through different nodes, with each layer independent of the others. The innermost layer contains the original data, while outer layers are added by intermediate nodes. This nesting provides zero knowledge security while managing complexity through modular layer addition.
Solution Approach 2:
The patent uses cryptographic copying mechanisms where each transit node creates a copy of the encrypted data with its own encryption key applied. Instead of storing or processing the original data, each node works with a cryptographic copy that it can forward but cannot access the contents of. This copying approach maintains data privacy while simplifying the operational complexity at each individual node.
4Loss of information
If the system deploys transit nodes across multiple jurisdictions, then a single service provider cannot determine the entire transit path, but deployment and management complexity increases
Solution Approach 1:
The patent segments the transit path across multiple independent nodes located in different jurisdictions. Each node operates independently with its own encryption and routing decisions, so that no single service provider or jurisdiction can determine the complete transit path. The segmentation is implemented through independent cryptographic sessions at each node, making the system resilient to jurisdictional constraints while maintaining path privacy.
Solution Approach 2:
The patent implements dynamic routing decisions at each transit node, where the path is not fixed but can change based on real-time conditions. Each node independently determines the next hop in the path, allowing for flexible and adaptive routing that prevents any single jurisdiction from having complete knowledge of the transit path. This dynamic approach manages deployment complexity through automated routing protocols.
Data Source
AI summary
Disclosed are techniques for secure transmission of encrypted data. A system can include: ingress nodes that receive encrypted data that doesn't specify a destination from computing devices, transit nodes connected to the ingress nodes that route the data through next hop nodes, and egress nodes connected to the transit nodes that route the data to services. The ingress, transit, and egress nodes collectively provide a transit network of next hop connections, where each node knows only its direct next hop nodes, where each next hop node has its own secure connection for data transmission. Each node can request health or latency information from each next hop node with respect to each next hop node's secure connection for data transmission, select an available next hop node based on the health or latency information, and securely transmit the encrypted data over a secure communication of the selected next hop node.