Wireless Input Device Secure Data Transmission via Split Key Encryption
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Solution Overview
Problem
Conventional wireless mouse devices lack secure data transmission, making control signals vulnerable to interception and theft during communication between the mouse and the computer host.
Innovation Solution
A wireless input device employing an information receiving terminal and an information outputting terminal that generate and exchange first- and second-portion keys for encrypting and decrypting data using an encryption algorithm, such as AES, to secure the transmission of control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to transmit control signals from the mouse to the computer, then the cost of cables is reduced and operating distance is increased, but the control signals become vulnerable to interception and theft
Solution Approach 1:
The encryption key is divided into two portions: a first portion stored in the mouse and a second portion stored in the computer. This segmentation ensures that neither device alone possesses the complete encryption key, preventing interception and decryption by unauthorized parties while maintaining wireless communication convenience.
Solution Approach 2:
An encryption mechanism acts as an intermediary between the mouse and computer, protecting the control signals transmitted wirelessly. The encryption key (split into two portions) serves as the mediator that secures the communication channel without interfering with the wireless operation.
2Reliability
If encryption is implemented to secure data transmission, then data security is improved, but device complexity increases
Solution Approach 1:
The encryption system is simplified by segmenting the encryption key into two portions distributed across different devices. This avoids the need for complex key management systems in each device, as each only needs to store and protect a portion of the key rather than the complete key or complex key generation mechanisms.
Solution Approach 2:
The mouse and computer automatically perform encryption and decryption operations using their respective key portions. The system self-manages the security protocol without requiring external key management infrastructure, reducing overall system complexity while maintaining strong security.
Data Source
AI summary
A wireless input device includes an information receiving terminal and an information outputting terminal. The information receiving terminal generates a first-portion key. The information outputting terminal receives the first-portion key and generating a second-portion key. An original information is converted into an encrypted information by the information outputting terminal according to the first-portion key, the second-portion key and an encryption algorithm. The encrypted information and the second-portion key are transmitted from the information outputting terminal to the information receiving terminal. The encrypted information is restored to the original information by the information receiving terminal according to the first-portion key, the second-portion key and an encryption algorithm.