One-Time Key Authentication for Field Worker Security
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Solution Overview
Problem
Companies face challenges in securely authenticating field workers at customer locations, as existing methods lack a robust and time-limited identification solution that prevents unauthorized access and ensures worker authorization.
Innovation Solution
A system comprising an authentication server, worker device, and customer device that generates and verifies a one-time key using a cryptographically strong pseudo-random number generator, transmitted securely via barcode, RFID, or wireless protocols, ensuring temporary validity and additional security measures like biometric authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional identification methods are used for field workers, then ease of operation is maintained, but security and reliability of worker authentication deteriorates
Solution Approach 1:
The authentication system is segmented into distinct components: a server that generates one-time keys, worker devices that store and present these keys, and customer devices that verify them. This segmentation allows each component to have a specialized function, improving overall security while keeping individual components relatively simple.
Solution Approach 2:
One-time keys serve as an intermediary between the authentication server and worker devices. Instead of direct authentication protocols that would increase complexity, the one-time keys act as a simple mediator that carries authentication information securely between systems.
2Reliability
If permanent identification credentials are provided to workers, then ease of operation is improved, but security against unauthorized access deteriorates
Solution Approach 1:
The system uses disposable one-time keys that are valid for a single authentication event or limited time period. After use, these keys become invalid, preventing unauthorized reuse. This approach maintains security without requiring complex revocation systems, as each key is inherently limited in its validity.
Solution Approach 2:
Authentication credentials are renewed periodically or for each work session rather than being permanent. Workers receive new one-time keys as needed, creating a periodic authentication rhythm that maintains security while keeping the process simple and routine.
3Reliability
If worker identification reveals personal identity, then ease of operation for customer verification is improved, but security and privacy protection deteriorates
Solution Approach 1:
The system extracts the authentication function from personal identity information. Instead of using actual personal identifiers (names, social security numbers, etc.), the system uses anonymous one-time keys that prove authorization without revealing who the worker is. This separates authentication from identity disclosure.
Solution Approach 2:
Instead of transmitting actual personal identity information, the system uses copies or representations in the form of one-time keys. These keys replicate the authentication function without containing sensitive personal data, allowing verification without privacy exposure.
Data Source
AI summary
A server includes a key generator and an authenticator. The key generator is configured to receive a request for a first key from a worker device, to create the first key that is associated with a worker, and to transmit the first key to the worker device. The authenticator is in communication with the key generator, the authenticator is configured to receive a second key and identification details from a customer device, to transmit the identification details to the worker device, to receive acknowledgment of the identification details from the worker device, and to authenticate the second key and the identification details with the customer device.