Server-Based NFC Tag Authentication for Secure Value Transfer
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Solution Overview
Problem
The increasing cost and inconvenience of protecting IC chips in mobile devices with tamper resistance properties, particularly when users switch phones or need to transfer stored value, are significant challenges in near field communication systems.
Innovation Solution
An information processing system and method that employs a server device and a non-contact communication tag with identification and authentication information units, enabling secure near field communication by authenticating the tag through a server device, thereby reducing the need for tamper-resistant IC chips in mobile devices and simplifying value transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tamper-resistant IC chips are embedded in mobile telephones to store high-value information, then security is improved, but device cost increases
Solution Approach 1:
The patent extracts the security-critical functions (tamper resistance and high-value information storage) from the mobile telephone device and relocates them to a dedicated server system. The mobile telephone retains only lightweight identification and authentication capabilities, while the server handles secure value storage and verification, eliminating the need for expensive tamper-resistant chips in consumer devices.
Solution Approach 2:
The patent introduces a server as an intermediary between the mobile telephone and the value storage system. This server acts as a trusted third party that verifies authentication information and manages electronic money, allowing mobile phones to use inexpensive non-contact communication tags while maintaining security through server-side validation.
2Reliability
If tamper-resistant IC chips are embedded in mobile telephones to protect from illegitimate access, then security is improved, but device complexity increases
Solution Approach 1:
The patent removes complex security mechanisms from the mobile telephone by extracting the value storage and authentication verification functions to a server. The mobile phone only needs to store simple identification information and communicate with the server, dramatically reducing device complexity while maintaining security through server-side protection.
3Ease of operation
If value is stored in a mobile telephone, then convenience is improved, but transferring value to another device becomes cumbersome
Solution Approach 1:
The patent creates a universal value storage system where electronic money is stored on the server rather than in specific devices. This allows the same value to be accessed from any mobile telephone through authentication, enabling seamless transfer between devices without manual intervention or time-consuming processes.
Data Source
AI summary
Provided is an information processing system including a server device, and a non-contact communication tag readable through NFC. The non-contact communication tag includes an identification information retaining unit that retains identification information for uniquely identifying the tag, an authentication information retaining unit that retains authentication information to be used in authentication of the non-contact communication tag, and a NFC unit that transmits the identification information and the authentication information to another device, which will transmit the received identification information and authentication information to the server device, in NFC with the other device. The server device includes an information acquisition unit that acquires the identification information, the authentication information, and other information transmitted from the other device, an authentication unit that authenticates the non-contact communication tag using the authentication information, and a process execution unit that executes a process according to the other information and the identification information after the authentication.