Secure Device Deregistration via Forward-Chaining Encryption Tokens
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Solution Overview
Problem
Managing the registration and deregistration of order/reorder devices within a fulfillment system is challenging due to unreliable device identifiers, which can lead to denial of service attacks and unauthorized access.
Innovation Solution
An electronic device performs a deregistration process by generating a deregistration token through cryptographic functions and sending it to the fulfillment service, allowing secure deregistration and disassociation of customer accounts, even when device identifiers are not universally unique or valid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manufacturer issued device identifiers are used for registration and deregistration, then device identification is simplified, but system security deteriorates due to unreliable identifiers that can lead to denial of service attacks
Solution Approach 1:
A fulfillment service acts as an intermediary between customers and third-party devices. The service receives device identifiers from customers, validates them against stored identifiers from legitimate device manufacturers, and only permits registration if validation succeeds. This intermediary validation layer prevents malicious device identifiers from compromising system security while maintaining ease of operation for legitimate devices.
2Adaptability or versatility
If third party device identifiers are accepted without validation, then device registration is more accessible, but system security deteriorates due to inability to guarantee identifier uniqueness and validity
Solution Approach 1:
The fulfillment service implements a feedback mechanism where device identifiers submitted by customers are validated against a stored set of legitimate identifiers. The service provides immediate feedback by either permitting registration when the identifier is valid or rejecting it when invalid. This feedback loop maintains system security while allowing broad device registration accessibility for legitimate devices.
3Ease of manufacture
If device identifiers from third parties are trusted, then device integration is easier, but system integrity deteriorates due to denial of service attacks and unauthorized access
Solution Approach 1:
The fulfillment service performs preliminary validation of device identifiers before allowing device integration. During the registration process, the service proactively verifies submitted identifiers against legitimate manufacturer identifiers before any device integration occurs. This preliminary action prevents unauthorized devices from integrating into the system while maintaining ease of integration for legitimate devices.
Data Source
AI summary
A fulfillment service may securely register and deregister third party electronic devices within a fulfillment environment. The fulfillment service may receive a service request from an electronic device. The fulfillment service may determine that the service request includes a deregistration token. Further, the fulfillment service may identify the electronic device associated with deregistration token. In response, the fulfillment service may delete fulfillment service information associated with the electronic device in response to determining the electronic device has been deregistered. In addition, the fulfillment service may send a service response to the electronic device instructing the electronic device to delete the deregistration token. In some cases, the service request may include a registration attempt. As such, the service response may include a security token for the electronic device.