Relay Device Cloud Authentication Synchronization
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Solution Overview
Problem
When a user changes their log-in information while accessing a cloud service device directly from a user terminal, the log-in information or access token held by a relay device becomes invalid, preventing access to the cloud service device from an image processing apparatus via the relay device.
Innovation Solution
The relay device includes a receiving unit for image data and a control unit that updates the log-in information on the cloud service device, ensuring that the log-in information is synchronized and valid even after changes, by generating an update unit that updates the authentication table stored in the relay device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user changes log-in information by accessing the cloud service device directly from a user terminal, then security is improved, but the log-in information held by the relay device becomes invalid, causing loss of functionality for image processing apparatus access
Solution Approach 1:
The relay device proactively checks whether log-in information held in its storage unit is valid before allowing image processing apparatus to access the cloud service device. This preliminary validation prevents access failures by detecting invalid log-in information before the actual access attempt occurs.
Solution Approach 2:
The relay device receives validity notification from the cloud service device regarding the log-in information stored in its storage unit. This feedback mechanism allows the relay device to know whether its stored credentials are still valid, enabling it to inform the image processing apparatus of the current access status.
2Ease of operation
If the relay device holds log-in information for cloud service device access, then access functionality for image processing apparatus is enabled, but the log-in information may become outdated when users change credentials directly, causing access failures
Solution Approach 1:
The relay device checks the validity of stored log-in information before permitting access operations. By performing this check in advance, the system prevents attempts to use invalid credentials, thereby maintaining access functionality while ensuring information reliability.
Solution Approach 2:
The cloud service device provides feedback to the relay device about the validity status of the log-in information. This allows the relay device to maintain accurate knowledge of credential status without needing to continuously monitor or re-authenticate, balancing functionality with reliability.
3Reliability
If the relay device continuously validates log-in information with the cloud service device, then log-in information validity is maintained, but communication overhead and processing time increase
Solution Approach 1:
Instead of continuous validation, the relay device performs periodic validity checks by receiving status notifications from the cloud service device at intervals or upon specific events. This reduces communication overhead while maintaining adequate knowledge of log-in information validity.
Solution Approach 2:
The cloud service device actively notifies the relay device about log-in information validity status without requiring the relay device to continuously query. This self-service approach reduces the validation burden on the relay device while maintaining reliability.
Data Source
AI summary
A relay device includes a receiving unit that receives image data from an image processing apparatus and a control unit that controls an update unit that updates log-in information to be generated in a cloud service device in a case where the received image data is transferred to the cloud service device, and the log-in information for the cloud service device is held.