Ephemeral Key Pair Trust for Cloud Content Devices
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Solution Overview
Problem
Openly accessible content creation devices, such as multifunction printers, pose a security risk as they may not ensure secure connections to cloud services, potentially caching or mishandling sensitive data, and users lack control over the encryption and authentication processes.
Innovation Solution
Establishing a three-way trust relationship between a content creation device, a mobile device, and a cloud service using certified applications that generate ephemeral key pairs for secure data transfer and storage, ensuring that data is encrypted and protected from unauthorized access, even when stored on the cloud service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If openly accessible content creation devices are used for cloud service connections, then device accessibility and ease of operation are improved, but security and data protection are worsened
Solution Approach 1:
The patent introduces certified applications as intermediary components that mediate between the content creation device and cloud service. These certified applications establish trust relationships and handle authentication, acting as a security intermediary that allows open device access while maintaining controlled security protocols. The certified application on the content creation device communicates with a mobile certified application, which then interacts with the cloud service, creating a layered intermediary structure.
Solution Approach 2:
The security system is segmented into multiple independent components: a certified application on the content creation device, a mobile certified application on the mobile device, and the cloud service. Each segment has specific security responsibilities - the certified application manages local trust relationships, the mobile certified application handles authentication and key management, and the cloud service provides secure data storage. This segmentation allows each component to be optimized for its specific security function while maintaining overall system accessibility.
2Reliability
If certified applications with ephemeral key pairs are implemented, then data protection and security are improved, but device complexity and system configuration are worsened
Solution Approach 1:
The certified applications automatically generate ephemeral key pairs and establish trust relationships without requiring manual user configuration. The mobile certified application autonomously manages authentication credentials, generates session keys, and coordinates security handshakes with the content creation device and cloud service. This self-service capability reduces the perceived complexity for users while maintaining robust cryptographic protection.
Solution Approach 2:
Trust relationships and authentication mechanisms are established in advance before actual data transfer occurs. The certified application pre-configures security parameters, generates necessary cryptographic keys, and validates trust relationships beforehand. This preliminary security setup ensures that when data transfer is needed, the complex authentication processes have already been completed, reducing operational complexity during actual use.
3Reliability
If three-way trust relationships are established between devices and cloud service, then authentication security is improved, but connection establishment time and process complexity are worsened
Solution Approach 1:
The system performs preliminary authentication and trust verification actions before actual data transfer to prevent security issues during operation. The mobile certified application pre-establishes trust relationships with both the content creation device and cloud service, conducting security validations in advance. This preliminary anti-action approach ensures that when real data transfer occurs, the authentication framework is already in place, reducing the time penalty of security checks during critical operations.
Data Source
AI summary
A certified application is installed onto a content creation device and a mobile certified application is installed onto a mobile device, the applications establish first and second trust relationships with the cloud service. The certified application and mobile certified application establish the third trust relationship via a proximity network. The mobile certified application generates a first ephemeral key pair having a private part. The certified application generates a second ephemeral key pair having a private part. The mobile certified application requests a service from the content creation device involving the transfer of data between the content creation device and the cloud service. The data is protected by at least one of the first and second ephemeral key pairs in response to invocation of the service. The service results in the data being stored at the cloud service and/or rendered at the content creation device.