Wearable Medical Device Authentication Using Encrypted Challenge Response
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Solution Overview
Problem
Existing remote control technologies lack sufficient security measures, leading to risks of data leakage and unauthorized use due to inadequate authentication methods.
Innovation Solution
A wireless device authentication method involving the generation and verification of encrypted packets using random numbers and hash-based message authentication codes (HMAC) to ensure that only authorized users with physical access can control devices, employing encryption algorithms like AES-128 CBC mode for secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only password authentication is used for remote control, then the ease of operation is improved, but the security performance deteriorates
Solution Approach 1:
The authentication process is segmented into multiple stages: password authentication stage and challenge-response authentication stage. The first stage provides ease of operation while the second stage ensures security, resolving the contradiction between convenience and security.
Solution Approach 2:
The system performs preliminary password authentication before the actual remote control operation. This preliminary action filters out unauthorized users while allowing legitimate users to proceed to the challenge-response phase, maintaining both ease of operation and security.
2Ease of operation
If password authentication is used, then the ease of operation is improved, but the risk of data leakage increases
Solution Approach 1:
The patent introduces an intermediary challenge-response mechanism between the password authentication and the actual data transmission. This intermediary phase verifies the user's identity before allowing any data exchange, preventing data leakage while maintaining operational ease.
Solution Approach 2:
The system performs preliminary authentication challenges before allowing data transmission. This preliminary verification ensures that only authenticated users can access data, thereby preventing data leakage while maintaining ease of operation for authorized users.
3Ease of operation
If password authentication is used, then the ease of operation is improved, but the risk of unauthorized use increases
Solution Approach 1:
The authentication is segmented into two phases: initial password authentication for ease of operation, followed by challenge-response authentication for security verification. This segmentation prevents unauthorized use while maintaining operational convenience.
Solution Approach 2:
The system provides feedback through challenge-response mechanisms after password authentication. This feedback loop verifies the user's identity dynamically, preventing unauthorized use while allowing authenticated users to operate the system easily.
Data Source
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AI summary
Disclosed are a wireless device authentication method, a system, a wearable medical device, and a product. The wireless device authentication method includes: responding to an authentication request from the target device to generate a first encrypted packet, and sending the first encrypted packet to the target device; receiving a second encrypted packet generated by the target device by modifying the data in the first encrypted packet after verifying the decrypted first encrypted packet has passed authentication; and determining that the target device has passed authentication when the second encrypted packet meets pre-set conditions, and responding to an encrypted instruction sent by the target device. The pre-set conditions include that the keys corresponding to the second encrypted packet and the first encrypted packet are the same and the second encrypted packet has passed integrity authentication.