Password Entry Security via Color Decomposition
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Solution Overview
Problem
Large-screen electronic devices with virtual keyboards pose a security risk as others can easily observe password entries, making it difficult to ensure password entry security.
Innovation Solution
A password entry method and system that involves an intelligent display terminal randomly generating and decomposing soft keyboard image data using subtractive color processes, displaying a partial image on the terminal and restoring it on a portable display terminal using additive color processes, ensuring only the user sees the complete keyboard for entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a virtual keyboard is displayed on a large-screen electronic device for password entry, then the ease of operation is improved, but the security of password entry deteriorates because others can easily observe the entered content
Solution Approach 1:
The soft keyboard image is segmented into multiple partial images through color decomposition. The intelligent display terminal displays only one partial image, while the portable display terminal displays another partial image. Neither terminal alone shows the complete keyboard, thus preventing observation while maintaining usability through color addition.
Solution Approach 2:
Different regions of the keyboard image are assigned different color characteristics. By decomposing the image into partial images with distinct color properties, each terminal displays a locally valid but globally incomplete view, ensuring security while preserving operational functionality.
2Ease of operation
If the complete soft keyboard image is displayed on the intelligent display terminal for user input, then the ease of operation is improved, but the loss of information increases for unauthorized observers who can see the complete keyboard layout
Solution Approach 1:
The complete keyboard image information is segmented and distributed across multiple terminals. The intelligent display terminal holds one partial image while the portable display terminal holds another. The complete information is only reconstructed when both partial images are combined through color addition, preventing information loss to unauthorized observers.
Solution Approach 2:
Color addition serves as an intermediary mechanism that reconstructs the complete keyboard image only when both partial images are combined. This intermediary process ensures that information is preserved for authorized users while remaining concealed from unauthorized observers who access only a single terminal.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances password entry security by preventing others from viewing the complete keyboard, thus masking the entered password content.
Implementation Method 1
decomposing, by the intelligent display terminal, the image data of the soft keyboard into image data of a first soft keyboard and image data of a second soft keyboard by using a subtractive color process
Implementation Method 2
combining the image data of the first soft keyboard and the image data of the second soft keyboard by using an additive color process to restore the image of the soft keyboard
Data Source
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Figure 2A~3C
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AI summary
Disclosed are a password entry method and system. In the present invention, an intelligent display terminal receives a password entry instruction of a user, and randomly generates image data of a soft keyboard; the intelligent display terminal decomposes the image data of the soft keyboard into image data of a first soft keyboard and image data of a second soft keyboard by using a subtractive color process; the intelligent display terminal displays an image of the first soft keyboard according to the image data of the first soft keyboard, and sends the image data of the second soft keyboard to a portable display terminal; and the portable display terminal combines the image data of the first soft keyboard and the image data of the second soft keyboard by using an additive color process to restore an image of the soft keyboard, and displays the image of the soft keyboard. The present invention improves password entry security.