Personal Printing Device Token Generation
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Solution Overview
Problem
Traditional physical and electronic tokens are prone to loss, theft, and security risks due to reliance on third-party issuance, and are easily copied, posing challenges in authentication and authorization processes.
Innovation Solution
A personal printing device is equipped with a memory to store unique identity certificates, a security module for user authentication, and a token module that generates and prints tokens with embedded information and constraints, such as validity periods and user-specific images, using a secure printing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional third-party token issuance is used, then token generation is centralized and easier to manage, but security risks increase due to reliance on third-party systems and ease of copying
Solution Approach 1:
The system enables self-service token generation by allowing users to create tokens locally on their own devices using stored identity certificates, eliminating the need for third-party token issuance systems. This decentralizes token generation while maintaining security through local cryptographic operations and user-controlled authentication.
Solution Approach 2:
The system segments the token issuance function from centralized third-party systems and distributes it to individual user devices. Each device maintains its own identity certificate and can independently generate tokens, breaking the monolithic third-party issuance model into distributed autonomous units.
2Ease of operation
If physical tokens are issued, then authentication is simplified, but loss and theft become major security concerns
Solution Approach 1:
The system replaces physical tokens with digital token representations that can be securely copied and transmitted electronically. These digital tokens contain encrypted authentication data that can be verified without physical handling, eliminating loss and theft risks associated with physical carriers while maintaining authentication simplicity.
Solution Approach 2:
The system replaces mechanical physical token systems with electronic/digital token generation and verification. Instead of physical cards or badges that can be lost or stolen, the system uses digital certificates and cryptographic tokens that can be securely managed, revoked, and regenerated electronically.
3Productivity
If electronic tokens are used, then token generation becomes faster, but vulnerability to malware and attacks increases
Solution Approach 1:
The system performs preliminary security actions by pre-storing identity certificates and cryptographic keys on user devices before token generation is needed. This allows tokens to be generated quickly when needed while the security infrastructure is already in place, reducing vulnerability during the token creation process.
Solution Approach 2:
The system implements preliminary anti-action by incorporating security measures directly into the token generation process itself, including cryptographic signing and validation. This prevents malware and attacks from compromising token security by making the generation process inherently secure through cryptographic verification.
4Reliability
If replacement of lost tokens requires third-party contact, then token control is centralized, but time consumption and user burden increase
Solution Approach 1:
The system enables users to self-manage their tokens including generation, storage, and revocation without contacting third parties. Users can regenerate lost or compromised tokens locally on their devices using their stored identity certificates, eliminating time-consuming third-party contact while maintaining centralized security control through cryptographic verification.
Data Source
AI summary
Examples described herein relate to accessing an identity certificate with a printing device based on validation information obtained from a user. Examples include generating, with the printing device, a token based at least in part on the identity certificate, and the token incorporating constraint data. Examples further include printing the token having the identity certificate and the constraint data.