Dynamic Physical Entry Authorization URLs for Replay Attack Defense
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing Internet-based entry authorization systems are vulnerable to replay attacks, which can harass human authorizers and disrupt secure physical entry points, especially for one-time visitors who lack detailed information about authorized individuals.
Innovation Solution
Implementing dynamic Physical Entry Request Identifiers (PERIs) in instantaneously presented URLs, combined with navigation request authentication steps, to ensure that would-be harassers must be present at the entry point and using time-based or event-driven update protocols to defend against replay attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static URLs are used for entry requests, then ease of operation is improved, but security against replay attacks deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from static URLs to dynamic URLs that change over time. The system generates time-varying URLs that are valid only for specific time windows, ensuring that each entry request uses a unique, non-reusable URL. This resolves the contradiction by maintaining ease of operation (visitors still use URLs to request entry) while dramatically improving security against replay attacks (each URL is valid only once or for a limited time window).
Solution Approach 2:
The patent applies parameter changes by modifying the URL structure to include time-dependent parameters and session identifiers. The URLs incorporate changing parameters such as timestamps, session tokens, and random identifiers that make each URL unique and time-sensitive. This allows the system to maintain user-friendly URL-based operation while ensuring that captured or replayed URLs become invalid after their designated time window or single use.
2Reliability
If dynamic URLs are implemented to defend against replay attacks, then security is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by implementing automatic URL generation and validation mechanisms. The system automatically generates time-varying URLs with embedded authentication parameters, and the server automatically validates these URLs without requiring manual intervention. This reduces the operational complexity burden on users and administrators, offsetting the increased system complexity through automation.
Solution Approach 2:
The patent introduces an intermediary server that manages the complexity of dynamic URL generation and validation. The server acts as a mediator between the entry point and authorization devices, handling URL generation, time-window management, and validation logic. This centralizes the complexity in a dedicated component rather than distributing it across multiple devices, making the overall system more manageable despite the increased sophistication required.
3Reliability
If navigation request authentication is added, then security against unauthorized intrusions is improved, but loss of time increases
Solution Approach 1:
The patent applies preliminary action by performing authentication checks during the navigation request phase, before final entry authorization is granted. The system validates navigation requests against the authenticated session and URL parameters early in the process, preventing unauthorized intrusions before they can compromise the entry point. This early validation reduces the need for more time-consuming security checks later in the authorization flow.
Solution Approach 2:
The patent maintains continuity of useful action by ensuring that authenticated navigation requests flow smoothly through the authorization process without interruption. Once a URL is authenticated, the associated navigation requests inherit this authentication, allowing continuous processing without requiring repeated authentication checks. This maintains security while minimizing time loss by avoiding redundant validation steps.
Data Source
AI summary
Internet-based entry authorization systems and methods for enabling a human authorizer to authorize or deny physical entry to a human visitor at a secure physical entry point designed to defend against replay attacks by use of instantaneously presented dynamic URLs including dynamic Physical Entry Request Identifiers (PERIs) requiring authentication.