On-Device Rewriteable Memory for Secure Transaction Verification
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Solution Overview
Problem
Existing IoT systems face challenges in efficiently managing and securing transactions involving devices with on-device rewriteable memory, particularly in scenarios where wireless technologies have limited range and power constraints.
Innovation Solution
An IoT platform with a central hub and mobile device intermediary system that enables data collection and management across extended ranges using low-power wireless communication, secure key exchange, and data encryption, along with a chain of trust for secure transactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices use on-device rewriteable memory for transaction verification, then transaction security and reliability are improved, but device complexity and memory management overhead increase
Solution Approach 1:
The patent introduces a transaction verification service as an intermediary component that handles memory verification operations. Instead of devices independently managing their own memory verification, the service acts as a mediator that receives verification requests from devices, processes them through centralized logic, and returns verification results. This reduces the complexity burden on individual devices while maintaining reliable transaction verification through centralized coordination.
2Area of stationary object
If wireless communication range is extended for IoT devices, then device connectivity and data collection capability are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic communication mode selection where devices can switch between different wireless communication ranges based on operational needs. When devices are within close proximity, short-range communication is used to conserve battery power. When extended coverage is required, the system dynamically transitions to longer-range communication modes, optimizing the balance between connectivity area and power consumption rather than operating at maximum range continuously.
3Stability of the object's composition
If centralized transaction verification service is implemented, then verification consistency across devices is improved, but system latency and communication overhead increase
Solution Approach 1:
The patent implements preliminary actions by having devices perform local validation checks before submitting transactions to the centralized verification service. Devices verify basic transaction conditions locally using stored reference data, and only submit transactions that pass preliminary checks to the centralized service. This staged approach ensures verification consistency through centralized oversight while reducing latency by filtering out obviously invalid transactions before they reach the central system.
Data Source
AI summary
A system, method, and machine-readable medium are described for verifying a transaction related to a device with an on-device rewriteable memory. For example, one embodiment of a method comprises: during a purchase transaction to purchase a device at a point of sale (POS) system, reading a certificate stored on a rewriteable tag integral to the device; generating a signature over the certificate and, if the purchase transaction results in a successful purchase of the device, storing the signature in the rewriteable tag; during a post-purchase transaction, attempting to read the signature from the rewriteable tag and validate the signature; denying the post-purchase transaction if the signature cannot be read and/or is not validated; if the signature can be read and validated, then: permitting the post-process transaction; generating a new public/private key pair and corresponding new certificate; and storing the new certificate on the rewriteable tag.