SIP Key Exchange Timing Flexibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing key exchange technique described in RFC 6189 uses a fixed timing for key exchange, lacking a method for regular key exchange at desired timings.
Innovation Solution
A data transmission and reception method involving a key update request, key delivery request, key delivery, key reception notice, key-use start notice, and data transmission using a system with a client terminal, SIP server, and key delivery server, allowing key exchange at flexible timings through the SIP protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed timing for key exchange is used as specified in RFC 6189, then the key exchange process is simple and standardized, but the system lacks flexibility to perform key exchange at desired timings
Solution Approach 1:
The patent applies dynamics by making the key exchange timing adjustable rather than fixed. The system allows key exchange to occur at predetermined timings or upon receipt of update requests, enabling flexible adaptation to different operational requirements while maintaining a standardized protocol framework
Solution Approach 2:
The patent implements preliminary action by establishing predetermined timings for key exchange in advance. The system can be configured with scheduled key update intervals or trigger conditions before operation begins, allowing proactive key management rather than reactive adjustments
2Reliability
If key exchange is performed regularly at desired timings, then security is improved through frequent key updates, but the communication overhead and system complexity increase
Solution Approach 1:
The patent applies periodic action by implementing regular key exchange at predetermined intervals or timings. The system schedules key updates periodically based on configured parameters, ensuring security through frequent key rotation while maintaining predictable communication patterns
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors communication status and triggers key exchange based on received update requests or predefined conditions. This allows the system to adapt key exchange timing based on actual operational needs, balancing security requirements with communication efficiency
Data Source
AI summary
A server sends a key update request for requesting updating of the key, to a client terminal. The client terminal sends, to a key delivery server, a key delivery request for requesting the delivery of a key to the client terminal. The key delivery server delivers a key to the client terminal. The client terminal sends, to the server, a key reception notice indicating that the delivered key was received. The server sends, to the client terminal, a key-use start notice indicating that the client terminal starts data transmission and reception by using the delivered key with a different client terminal from the aforementioned client terminal. The client terminal performs data transmission and reception with the different client terminal by using the delivered key.