Log Recording Unit for Encrypted Communication Detection
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Solution Overview
Problem
Existing image forming devices face challenges in securely recording log information for processes performed by applications, particularly in determining if communication processes are encrypted, which is crucial for protecting confidential information, as improper implementation of log recording functions can lead to failure in detecting unsuitable applications accessing sensitive data.
Innovation Solution
An image forming device equipped with a determining unit to assess if communication processes are encrypted based on the call stack contents and a log recording unit to record relevant information, ensuring secure and appropriate logging of communication processes, even without explicit requests from applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If log recording function is implemented in the application inappropriately, then the application can be executed, but failure of recording of log information occurs and it becomes impossible to detect unsuitable applications
Solution Approach 1:
The patent introduces an intermediary log recording unit that sits between the application and the storage device. This unit automatically determines whether to record log information based on call stack analysis, eliminating the need for applications to implement complex logging logic while ensuring reliable log recording for encrypted communications.
Solution Approach 2:
The system performs preliminary analysis of the call stack before executing the communication process to determine whether encryption is being used. This preliminary action allows the log recording unit to proactively decide whether to record logs, preventing log recording failures rather than reacting to them afterward.
2Reliability
If log recording is performed for all communication processes, then detection of unsuitable applications is improved, but security of confidential information may be degraded due to unnecessary logging of encrypted communications
Solution Approach 1:
The patent applies local quality by making the log recording decision specific to each communication process based on its encryption status. The log recording unit analyzes the call stack locally for each communication request and selectively records logs only for non-encrypted communications, ensuring detection capability where needed while protecting confidential information where required.
3Adaptability or versatility
If the image forming device executes unspecified applications, then functional expansion is improved, but security is degraded due to inability to determine appropriateness of applications
Solution Approach 1:
The patent implements a feedback mechanism where the log recording unit continuously monitors communication processes and records log information that provides feedback about application behavior. This feedback enables the system to detect unsuitable applications that attempt to access confidential information through encrypted communications, maintaining security assurance even as application compatibility increases.
Data Source
AI summary
An image forming device is capable of executing an application. In the image forming device, a determining unit is configured to determine, in response to a request of execution of a communication process from the application, whether the communication process is an encrypted communication based on contents of a call stack which stores the request. A log recording unit is configured to record log information of the communication process in a storage device when the communication process is determined as being an encrypted communication.