Authentication System Using Challenge-Response Mechanism
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Solution Overview
Problem
Current authentication systems relying on passwords and personal identification numbers are vulnerable to interception and spoofing, and the use of a single password across multiple resources increases security risks, making them fundamentally flawed and inefficient.
Innovation Solution
A system that generates and communicates a challenge string to users, requiring a response string for authentication, which is then evaluated to authenticate the user's identity, while preventing the actual password or authentication credential from being submitted through the user interface, thus enhancing security and reducing the risk of unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a password or personal identification number is used for authentication, then the authentication process is simple and widely applicable, but the system becomes vulnerable to interception through spoofing and eavesdropping
Solution Approach 1:
The patent extracts the authentication credential (password or PIN) from the communication channel between user and service provider. Instead of transmitting the credential through potentially compromised channels, the system uses a challenge-response mechanism where only the authentication result is communicated, not the credential itself. This removes the vulnerable element from the system.
Solution Approach 2:
The patent introduces an intermediary authentication credential (the challenge-response pair) that mediates between the user's secret credential and the service provider's verification system. The challenge string serves as a mediator that transforms the static password into a dynamic authentication proof without exposing the original credential.
2Ease of operation
If a single password is used across multiple secured resources, then the ease of operation is improved, but the reliability deteriorates because a security breach in one resource jeopardizes all other resources
Solution Approach 1:
The patent segments the authentication process into distinct challenge-response pairs for each authentication event. Each resource can issue its own unique challenge string, and the user's device can manage multiple authentication credentials separately. This segmentation isolates security breaches to individual resources rather than propagating across all resources.
Solution Approach 2:
The patent transforms the static password into a dynamic challenge-response mechanism. The challenge string changes with each authentication request, and the response is valid only for that specific challenge. This dynamic approach allows the same user credential to authenticate to multiple resources without reusing the same authentication data, preventing cross-resource security propagation.
3Productivity
If the authentication credential is transmitted through the user interface, then the authentication process is straightforward, but the credential becomes susceptible to interception and spoofing
Solution Approach 1:
The patent extracts the authentication credential from the transmission path entirely. Instead of sending the password or PIN through the user interface and network channels, the system uses a challenge-response mechanism where only the challenge string and response are communicated. The credential itself never leaves the user's secure storage, eliminating interception risk while maintaining authentication efficiency.
Solution Approach 2:
The patent performs preliminary authentication verification through the challenge-response mechanism before any sensitive credential transmission. The challenge string is generated and verified in advance, establishing authentication status without requiring the actual credential to be transmitted. This preliminary action prevents the need for vulnerable credential transmission while maintaining security.
Data Source
AI summary
An authentication system for authenticating the identity of a requester of access by an unauthorized service client to a secured resource. The system has a messaging gateway having a first set of instructions operable to receive from a requester purporting to be an authorized user of a secured resource a request for limited access to the secured resource by an unauthorized service client for a particular transaction; a server having a second set of instructions operable to determine a key string known to both the secured resource and the authorized user the requestor purports to be, the key string being adapted to provide a basis for authenticating the identity of the requester as the authorized account holder; and a service user interface having a third set of instructions embodied in a computer readable medium operable to receive transaction specific information input into the request by the unauthorized service client.