Chat Room Access Control via Hierarchical Segmentation

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Solution Overview

Problem

Existing chat room access control systems fail to effectively manage and maintain confidentiality of messages and files within persistent chat rooms, as new participants can inadvertently or deliberately compromise the visibility and accessibility of existing content.

Innovation Solution

Implementing a user interface for moderators to assign access control levels to new participants, allowing conditions such as veto power, majority vote, or moderator approval for admission, and enabling granular control over content access based on user, domain, or time, with the ability to limit or extend viewing rights for messages and files.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chat rooms are locked and access is restricted to invited participants only, then confidentiality of chat content is improved, but ease of operation and flexibility of access management deteriorates

Engineering Contradiction:
Improveconfidentiality of chat contentVSAvoidaccess management flexibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent segments access control into multiple hierarchical levels: room-level access control (locked/unlocked state), content-level access control (individual messages or files), and participant-level access control (different access rights for different users). This segmentation allows simultaneous maintenance of confidentiality through restricted access and operational flexibility through granular control options.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic access control where access rights can be changed at different times and conditions. Moderators can dynamically lock or unlock rooms, grant or revoke access rights to specific participants, and control visibility of specific messages or files based on evolving needs. This dynamic capability resolves the contradiction by allowing strict control when needed while maintaining flexibility for future adjustments.

Inventive Principle:
Principle #15Dynamics

2Reliability

If moderators can lock rooms and block search visibility, then content security is improved, but device complexity and control mechanisms increase

Engineering Contradiction:
Improvecontent securityVSAvoidcontrol mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a universal access control system where a single set of moderator tools and control mechanisms serves multiple functions: locking/unlocking rooms, controlling participant admission, managing content visibility, and regulating participant actions. This multi-functionality reduces overall system complexity compared to having separate control mechanisms for each security function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements self-service capabilities where participants can self-register and request to join rooms, and moderators can automatically manage access based on predefined rules and policies. This reduces the complexity of manual control mechanisms while maintaining security, as the system handles routine access management automatically rather than requiring complex manual intervention for each access request.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If new participants can join persistent chat rooms freely, then ease of operation is improved, but loss of information and confidentiality deteriorates

Engineering Contradiction:
Improveparticipant admission easeVSAvoidconfidentiality of existing content
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

The patent implements preliminary action by requiring access control decisions to be made before participants can access content. Moderators pre-configure access rights, lock rooms in advance, and set content visibility rules before participants join. This preliminary control prevents unauthorized access to confidential content while still allowing easy admission through pre-approved mechanisms.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary access control layer between participants and chat room content. This intermediary mechanism (the access control system) mediates all access requests, automatically enforcing confidentiality rules while facilitating easy admission for authorized participants. The intermediary handles the complexity of security checks transparently, making participant admission easy while protecting confidential content.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11444900B2Chat room access control
Publication Date: 2022.09.13 CISCO TECHNOLOGY INC
  • US11444900B2 patent drawing
  • US11444900B2 patent drawing
  • US11444900B2 patent drawing

AI summary

In one embodiment, a request to join an electronic chat room is received from a requester. A selection of an access control level for the requester is received via a user interface in order to grant the requester access to the electronic chat room according to a condition for granting access. The user interface is used to assign a selected access control level to the requester, thereupon granting access to the requester. The requester's access to content available in the electronic chat room being limited based on the selected access control level. Related methods, apparatus, and systems are also described.