Master Node Secure Key Exchange for Wireless Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in preventing information exposure to third-party man-in-the-middle (MITM) attacks, even with security functions like encryption, as third parties can still acquire information during data exchange between devices.
Innovation Solution
A master node system that includes a scheduler for resource reservation and allocation, a controller for determining successful packet transfer, and a security manager for key exchange and authentication, using dedicated channels for secure communication, and generating a master key for encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encryption is applied to prevent information exposure, then security function is improved, but third party can still acquire information through man in the middle attack
Solution Approach 1:
The patent introduces a master node as an intermediary between slave nodes to establish secure connections. The master node generates and manages encryption keys, acting as a mediator that prevents direct key exchange between slave nodes that could be intercepted. This intermediary approach resolves the contradiction by providing security functionality while preventing information exposure through MITM attacks.
Solution Approach 2:
The patent implements preliminary action by pre-establishing secure key pairs at the master node before any data transmission occurs. The master node generates encryption keys in advance and securely distributes them to slave nodes through authenticated channels. This preliminary key establishment prevents information exposure during subsequent communications while maintaining security functions.
2Reliability
If dedicated channels are established for key exchange, then authentication is improved, but communication overhead increases
Solution Approach 1:
The master node serves multiple functions including key generation, key distribution, authentication, and connection management. By consolidating these security-related functions into a single multi-functional node, the patent improves authentication reliability while reducing overall communication overhead compared to implementing separate dedicated channels for each function.
Solution Approach 2:
The patent merges key exchange and authentication processes into a unified secure communication framework managed by the master node. Instead of establishing separate dedicated channels for key exchange and authentication, the system combines these functions into a single authenticated key distribution mechanism, reducing communication overhead while maintaining authentication integrity.
Data Source
AI summary
An operation method of a master node, the method including transmitting, to a slave node, a first resource reservation information including packet information about a packet to be transferred between the master node and the slave node; allocating a radio resource corresponding to the first resource reservation information, for exchanging security information; transferring the packet using the allocated radio resource; and determining whether the packet was successfully transferred based on the packet information.