WUSB Session Key Generation via Seed Key Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing WUSB security system burdens users with the need to distribute connection context information for creating a session key whenever a guest device is connected to a host, leading to inconvenience and a significant load on the system, especially when multiple devices are frequently connected.
Innovation Solution
A session key providing device that obtains necessary information from the host and creates a session key based on a seed key connection key, eliminating the need for users to distribute connection context information to guest devices, thereby reducing the load on both the host and devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users manually distribute connection context information to guest devices whenever connected, then security is maintained through user control, but user convenience deteriorates and system load increases significantly
Solution Approach 1:
The system enables automatic session key generation and distribution without requiring user intervention. The host device automatically generates session keys and distributes them to guest devices through the 4-way handshake protocol, eliminating the manual burden on users while maintaining security through automated cryptographic processes
Solution Approach 2:
The patent introduces an automated key management mechanism that acts as an intermediary between security requirements and user convenience. This mechanism handles the complex key distribution process transparently, allowing users to benefit from both security and convenience without direct involvement in the key management process
2Reliability
If users manually distribute connection context information to guest devices, then security control is maintained, but system load increases significantly when multiple devices are frequently connected
Solution Approach 1:
The system performs automatic session key generation and distribution without requiring user intervention for each connection event. The host device autonomously manages the cryptographic key lifecycle, including generation, distribution, and revocation, significantly reducing the operational burden on users while handling frequent device connections efficiently
Solution Approach 2:
The patent implements preliminary key pair generation and public key distribution before actual device connections occur. By pre-establishing cryptographic credentials and configuring the key management infrastructure in advance, the system is prepared to handle frequent connections without imposing manual distribution burdens during active usage
3Reliability
If connection context information is distributed manually, then user control over security is maintained, but the process becomes burdensome and time-consuming
Solution Approach 1:
The automated key management system performs all session key generation and distribution operations autonomously without requiring user time or effort. The system handles the entire cryptographic key lifecycle automatically, eliminating the time-consuming manual processes while maintaining security through programmed cryptographic protocols
Solution Approach 2:
The system performs key pair generation, public key exchange, and cryptographic infrastructure setup in advance before actual device connections are needed. This preliminary configuration eliminates the need for time-consuming manual key distribution during device pairing and connection events
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A wireless universal serial bus (WUSB) security is provided. A method of providing a session key to be used during a session between a host and a device creates the session key based on a seed key stored in a region that is not allowed by the device; and provides the session key to the device. Therefore, a user does not need to distribute information necessary for creating the session key, i.e., a connection context (CC), to a guest device.