Sender Terminal Access Control Check for Private Message Security
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Solution Overview
Problem
Existing solutions for private message security primarily protect the recipient from unauthorized access, but fail to ensure the sender's confidentiality, as they rely on the recipient's terminal security measures, which the sender cannot influence.
Innovation Solution
A method where the sender's terminal checks the access control status of the recipient's terminal before transmitting a private message, withholding the message if access control is inactive or insecure, and using continuous monitoring with face detection to ensure only authorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the sender transmits the private message without checking access control status, then the message delivery speed is improved, but the security of the private message is worsened
Solution Approach 1:
The sender's terminal performs preliminary checks of the recipient terminal's access control status before transmitting the private message. This includes querying whether access control is active and, if so, verifying continuous monitoring functions are operational. By conducting these security checks in advance, the system ensures message security without compromising delivery speed, as the checks are automated and performed as part of the standard transmission protocol initiation.
2Reliability
If the sender checks the access control status before transmission, then the security of the private message is improved, but the message delivery time is worsened
Solution Approach 1:
The system implements a feedback mechanism where the sender's terminal queries the recipient terminal about its access control status and continuous monitoring capability. The recipient terminal responds with status information, allowing the sender to make an informed decision about message transmission. This automated feedback loop streamlines the security verification process, minimizing the time added to message delivery while ensuring security requirements are met.
3Reliability
If continuous monitoring with face detection is implemented, then the protection against unauthorized access is improved, but the device complexity is worsened
Solution Approach 1:
The patent utilizes the terminal device's existing camera and face detection capabilities as intermediaries for continuous monitoring. Rather than implementing a complex dedicated monitoring system, the solution leverages hardware and software already present in modern terminals. The camera captures images, and existing face detection algorithms analyze them to determine whether the authorized user remains alone, providing robust unauthorized access protection without significantly increasing device complexity.
Data Source
AI summary
A computer-implemented method is for controlling access to a private message (1) of a user of a first terminal (4) to a user of a second terminal (5). The method includes detecting (8) the private message (1) and the receiver (3) on the first terminal (4) and ascertaining (9) the address of the second terminal (5) based on the detected receiver. A request (13, 16) of the status of an access control is transmitted from the first terminal (4) to the second terminal (5). A private message (1) is transmitted from the first terminal (4) to the second terminal (5) only if the request (16) has been answered by the second terminal (5) with a status notification (19) and the access control (17) at the second terminal (5) is active according to the status notification (19).