Dynamic Character Sequence for Secure Password Entry
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Solution Overview
Problem
Conventional password entry systems are insecure due to the risk of password observation and physical residue on keyboards, as users enter the exact same sequence of characters each time, making them vulnerable to security risks.
Innovation Solution
A system that displays an apparently random sequence of characters for password entry, allowing users to select characters that are part of their password, reducing the need to enter all characters in order and minimizing exposure of the password during entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users enter the exact same sequence of characters each time, then authentication is reliable and consistent, but security is compromised due to password observation risks and keyboard residue
Solution Approach 1:
The system dynamically changes the display of password characters each time the user enters their password. Instead of showing static characters in fixed positions, the system randomizes the positions and appearances of password characters on each entry attempt, making it difficult for observers to capture the password while maintaining reliable authentication through correct character matching
Solution Approach 2:
The system changes the parameters of character display including position, timing, and visual representation. Password characters are displayed at different locations on the screen, for different durations, and may appear as different symbols or images, thereby preventing password capture while ensuring accurate authentication through the underlying character identity
2Reliability
If users enter all characters in order on a keyboard, then complete password verification is achieved, but physical residue and wear patterns reveal password information
Solution Approach 1:
The system replaces the mechanical keyboard entry process with a display-based selection interface. Instead of requiring physical keyboard input that leaves residue, the system displays password characters on a screen and allows selection through non-contact methods such as mouse clicks or touch screen, eliminating the physical residue problem while maintaining verification completeness
Solution Approach 2:
The system introduces an intermediary display interface between the user and the password verification system. The password characters are presented as visual elements on a screen rather than direct keyboard input, acting as an intermediary that prevents direct physical contact and residue accumulation while still enabling complete password verification through selection
3Object-affected harmful factors
If the system displays an apparently random sequence of characters, then password exposure is reduced, but user input complexity increases
Solution Approach 1:
The system uses visual differentiation through color, size, or style changes to indicate which displayed characters are part of the password. Password characters may be highlighted, colored differently, or displayed with distinctive formatting compared to non-password characters, simplifying user selection while maintaining the random sequence appearance for security
Data Source
AI summary
Systems and methods for secure password entry are provided. A request to authenticate a user is received from a user device. A sequence of characters is generated. The sequence has a first subset of the characters selected from a password associated with the user. At least one of the characters appears a different number of times in the sequence than in the password. The sequence of characters is displayed on the user device in response to the request. A user selection of a second subset of the characters in the sequence is received through the user device. The user is authenticated in response to a determination that the first subset of the characters matches the second subset of the characters.