Dynamic Multimedia Mapping for Secure User Input
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Solution Overview
Problem
Existing methods for entering secret information into electronic devices, such as passwords or PINs, suffer from low entropy and a fixed connection with non-sensitive information entry methods, making them easy to intercept and requiring users to remember long, hard-to-remember sequences.
Innovation Solution
The method involves assigning multimedia information elements to secret information elements, with a dynamic connection that varies for each use, allowing users to select a sequence of multimedia elements to set the corresponding secret information sequence, using input devices like touch screens or mice, with multimedia elements displayed in a variable and easily recognizable format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct connection of input device control elements with secret information is used, then ease of operation is improved, but security is worsened due to low entropy and fixed connection patterns
Solution Approach 1:
The patent applies dynamics by making the connection between input device control elements and secret information dynamic rather than fixed. The mapping changes based on the current state of the system, so that the same physical key or touch position corresponds to different secret information elements at different times. This resolves the contradiction by maintaining ease of operation (user interacts with familiar input device) while improving security (attackers cannot predict which input corresponds to which secret element).
Solution Approach 2:
The patent introduces an intermediary layer between the input device and the secret information. This intermediary is the dynamic mapping mechanism that translates physical input positions into secret information elements based on current state. This mediator prevents direct correlation between input device control elements and secret information, thereby improving security while maintaining ease of operation through the familiar input interface.
2Device complexity
If fixed connection between input device and secret information elements is used, then device complexity is reduced, but security is worsened due to predictable patterns
Solution Approach 1:
The system implements dynamic mapping where the connection between input device control elements and secret information elements changes based on current state. This dynamic behavior increases security by preventing predictable patterns, while the underlying mechanism remains a relatively simple state-based mapping system, thus not excessively increasing device complexity.
Solution Approach 2:
The patent changes the parameter of the connection mapping from static to dynamic. By varying the mapping parameters based on system state, the security is improved through increased entropy and unpredictability. The complexity increase is managed by implementing this through state variables rather than complex hardware or algorithms.
3Reliability
If long secret sequences are required for security, then security is improved, but ease of operation is worsened due to difficulty of remembering
Solution Approach 1:
The dynamic mapping allows the system to provide strong security through increased entropy without requiring users to remember long sequences. The same short user input sequence can correspond to different secret information sequences at different times due to the dynamic mapping, effectively increasing the security strength while maintaining ease of operation with short, memorable user inputs.
Data Source
AI summary
The solution provides a method of secret information entering into an electronic digital device by a user via the input/output device, when the electronic digital device assigns a multimedia information designed for interaction containing the elements (1) is such a way that their relation to control elements of the electronic digital device is variable between individual displays. Then, the user selects elements (1) of multimedia information designed for interaction assigned to elements (2) of secret information in an order corresponding with the order of elements (2) of secret information, so by selecting the elements (1) of multimedia information designed for interaction the user selects the elements (2) of secret information in given order.