Shared Image Display Authentication via Disposable Passwords
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems require users to log in both a terminal device and an image display device separately to a shared service, consuming time and effort.
Innovation Solution
A method and system that correlates device identification information with a first password, allowing a terminal device to display a second password based on a common key and encryption algorithm, enabling direct input on the image display device for authentication, thereby reducing the need for separate logins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users log in both terminal device and image display device separately to shared service, then authentication security is maintained, but user time and effort increase
Solution Approach 1:
The patent merges the authentication processes of the terminal device and image display device into a unified flow. The server device correlates device identification information with user identification information through a shared password mechanism, allowing users to authenticate once on the terminal device and have that authentication recognized by the image display device, thereby eliminating redundant login steps while maintaining security
Solution Approach 2:
The server device acts as an intermediary between the terminal device and image display device. It generates and manages passwords that serve as common credentials, correlating device IDs with user IDs. This intermediary mechanism enables seamless authentication across multiple devices without requiring separate login procedures, reducing user effort while preserving authentication reliability
2Reliability
If disposable password is used for authentication, then security is enhanced, but system complexity increases
Solution Approach 1:
The patent implements disposable passwords that are generated temporarily for authentication purposes and then discarded. These passwords serve as single-use credentials that enhance security by preventing replay attacks and unauthorized reuse. The passwords are generated by the server device, transmitted to the image display device, and validated once before becoming invalid, providing strong security without requiring complex cryptographic protocols
Solution Approach 2:
The system changes the parameter of password validity from permanent to temporary. By implementing time-limited or single-use passwords, the system enhances security while managing complexity through straightforward expiration logic. The server device tracks password usage and validity periods, automatically invalidating passwords after use or expiration, which simplifies the authentication state management compared to permanent credentials
Data Source
AI summary
An information processing method according to an aspect of the present disclosure includes correlating device identification information indicating an output device to a first password by a server device that provides a service via a network, transmitting the first password to the output device by the server device, outputting information containing the first password by the output device, transmitting the first password to the server device by a first terminal device that has already logged in to the service using user identification information, correlating the user identification information to the device identification information based on the first password by the server device, transmitting a common key correlated to the user identification information to the first terminal device by the server device, displaying a second password based on the common key and an encryption algorithm by the first terminal device, receiving input of the second password by the output device, acquiring the user identification information corresponding to the common key from the server device based on the second password and the encryption algorithm by the output device, and executing processing based on the user identification information by the output device.