Mix Network Anonymizes Data Traffic for Secure Hub Communication
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Solution Overview
Problem
Current data communication systems for test and measurement devices with central hubs are not entirely secure and are costly to maintain, especially when using virtual private networks (VPNs) for secure data exchange over public networks like the Internet.
Innovation Solution
A data communication system that uses a mix network connected to a wireless private network, employing a chain of proxy servers to break the direct communication link and ensure secure data transfer, combined with end-to-end encryption and a hidden service like Tor for enhanced security, and includes a central hub and hardware devices interconnected via a mix network and wireless communication interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If virtual private networks (VPNs) are used to ensure secure data communication between central hub and hardware devices over public networks, then data security is improved, but maintenance costs and configuration expenses increase significantly
Solution Approach 1:
The patent introduces a mix network as an intermediary layer between the hardware devices and the central hub. This mix network consists of multiple relay nodes that forward and anonymize traffic, replacing the need for complex VPN infrastructure. The mix network acts as a mediator that provides security and anonymity without requiring the high maintenance and configuration overhead of traditional VPN solutions.
Solution Approach 2:
The communication path is segmented into multiple independent relay nodes in the mix network. Instead of using a single secure tunnel (VPN), the data is divided and routed through multiple separate nodes, each performing a limited function. This segmentation reduces the complexity of managing end-to-end secure connections while maintaining overall security through the collective security of multiple nodes.
2Productivity
If direct communication links are used between hardware devices and central hub, then communication efficiency is improved, but vulnerability to eavesdropping and tracing increases
Solution Approach 1:
The patent adds an additional dimension to the communication path by introducing multiple relay nodes and routing layers. Instead of a single direct link, data traverses through multiple dimensional layers of the mix network, including entry nodes, middle nodes, and exit nodes. This dimensional expansion provides security against eavesdropping and tracing while maintaining communication efficiency through optimized routing protocols.
Solution Approach 2:
The communication is nested through multiple layers of encryption and routing, similar to nested dolls. Each relay node in the mix network adds or removes a layer of encryption, and data is nested within multiple packets that are processed by different nodes. This nesting provides security against interception while allowing efficient processing at each layer.
3Reliability
If mix network with multiple relay nodes is used to anonymize communication, then security against eavesdropping is improved, but communication overhead and latency increase
Solution Approach 1:
The mix network performs preliminary actions by pre-establishing routing paths and pre-encrypting data at multiple layers before transmission. Entry nodes prepare and queue data packets in advance, and middle nodes have pre-configured routing tables. This preliminary preparation reduces the processing time during actual data transmission, thereby minimizing latency while maintaining security.
Solution Approach 2:
The system dynamically changes parameters such as buffer sizes, queue lengths, and routing selections based on network conditions. By adjusting these parameters, the mix network can optimize the balance between security (more relay nodes) and latency (fewer hops). Adaptive parameter changes allow the system to maintain high security while minimizing communication overhead under varying load conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a cost-efficient and secure data communication method by using a mix network to anonymize and encrypt data packets, making it difficult for eavesdroppers to trace communication, while maintaining secure data integrity through the use of a mix cascade layer and public key cryptography, even over potentially insecure public networks.
Implementation Method 1
The data exchanged by means of data packets is encrypted to each node using public key cryptography
Implementation Method 2
a mix network that is used for the respective data transfer between the central hub and the at least one hardware device. The mix network ensures a secure data communication of the respective data to be exchanged since the mix network provides a hard-to-trace communication
Data Source
Figure 1
AI summary
The invention relates to a data communication system (10) for communication between a central hub (14) and at least one hardware device (12). The data communication system comprises a central hub (14) for processing data, a mix network (18) connected to the central hub (14), a private network (20) connected to the mix network (18), and a communication interface (22) assigned to the hardware device (12). The communication interface (22) is configured to receive data to be transmitted from the hardware device (12) to the central hub (14) and/or to forward data to the hardware device (12) which was transmitted by the central hub (14). Furthermore, a method of communicating data from a first entity (12, 14) to a second entity (12, 14) is described.