Read-Only Message Transmission with Null Content Clearing
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Solution Overview
Problem
The challenge is to ensure the security of messages during communication, particularly at the receiver end, where user terminals are more susceptible to attacks and there is a risk of private messages being retained unnecessarily or maliciously.
Innovation Solution
A message processing method and device that transmits messages in a read-only mode, allowing only display without storage or modification, followed by clearing the content and sending null content, ensuring that the message is not retained by the receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If messages are transmitted in a traditional storeable mode, then the receiver can access and display the message content, but the message may be retained, stored, or maliciously kept at the receiver
Solution Approach 1:
The sender performs preliminary actions by sending the message in read-only mode first, then subsequently clearing the content and sending null content. This preliminary setup ensures that even if the receiver stores the message temporarily, the content is cleared before the receiver can potentially misuse it, thereby preventing malicious retention while maintaining secure access.
Solution Approach 2:
The invention extracts the harmful storage function from the message transmission process by introducing a separate content clearing mechanism. The message is sent in read-only mode without storage capability, and the content is subsequently extracted/cleared from the message structure, leaving only null content that cannot be retained or misused by the receiver.
2Reliability
If the message is sent in read-only mode without storage capability, then the receiver cannot store or modify the message, but the receiver still needs to display the message content
Solution Approach 1:
The message transmission process is segmented into distinct functional phases: first sending the message in read-only mode for display purposes, then clearing the content, and finally sending null content to prevent retention. This segmentation allows the system to fulfill both display requirements and security constraints by separating these functions into sequential steps rather than attempting to do both simultaneously in a single message transmission.
Data Source
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AI summary
In a message processing method and device described in the disclosed embodiments, a sender sends to a receiver a message in a read-only mode; the receiver displays content of the message in the read-only mode to a user; because the message is in the read-only mode, the receiver cannot store the message; the sender clears the content of the message and sends to the receiver the message with null content; the receiver again receives the message and updates displayed content of the message with content of the most recently received message; because the content of the message is already cleared at the sender, the content displayed at the receiver is also empty, thereby achieving the deletion of the message content. It can be appreciated that through the disclosed methods and devices, it can be guaranteed that both the message content being deleted at the receiver and the message not being stored by the receiver, thereby reducing the risk that the message content may be retained by the receiver.