Secure Communication Session Interception via Key Distribution
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Solution Overview
Problem
Existing techniques for intercepting communication sessions in telecommunications networks often fail to provide secure intercepts, leading to unauthorized interceptions and unsatisfactory results, particularly for secure calls.
Innovation Solution
A key distribution point determines the authorization of an intercepting point and provides a specific key for authorized interception, ensuring secure and controlled access to media streams by verifying intercepting points against predefined rules and profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known techniques for intercepting calls are used, then call information can be provided to intercepting points, but unauthorized interception cannot be prevented and secure calls cannot be properly intercepted
Solution Approach 1:
The patent introduces a key distribution point as an intermediary between the communication session and intercepting points. This mediator verifies authorization requests and distributes appropriate keys to authorized intercepting points, thereby preventing unauthorized interception while maintaining system security without requiring complex changes to the entire intercept system architecture.
2Adaptability or versatility
If general interception methods are used, then call information can be accessed, but specific types of interception (e.g., media stream intercept) cannot be provided
Solution Approach 1:
The patent applies local quality by providing different types of keys for different interception needs. The key distribution point determines the appropriate key type based on the interception request and provides the specific key needed for that particular interception type (e.g., media stream intercept vs. signaling intercept), allowing versatile interception capabilities while maintaining security through targeted key distribution.
Data Source
AI summary
Intercepting a secure communication session includes distributing a key from a key distribution point to establish a secure communication session between a first endpoint and a second endpoint. A secure channel is established between the key distribution point and an intercepting point. The intercepting endpoint may be determined to be authorized to intercept the secure communication session. The key is provided to the intercepting endpoint only if the intercepting endpoint is authorized to intercept the secure communication session, where the key provides the intercepting endpoint with access to intercept the secure communication session.