Hardware Crypto Wallet Access Control via Key Segmentation
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Solution Overview
Problem
Existing access control systems for crypto wallets rely on PINs, which can lead to issues such as forgotten PINs, device resets, and potential theft of cryptocurrency if incorrect PINs are entered excessively.
Innovation Solution
A method for configuring a hardware wallet that involves generating a master signing key pair and a first unlocking key pair, signing the public unlocking key with the master signing key, and transmitting the signed key to the hardware wallet, allowing for secure access to cryptocurrency without relying solely on PINs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PIN-based access control system is used for hardware crypto wallets, then the device can be accessed and operated, but the system becomes vulnerable to device resets and loss of cryptocurrency if incorrect PINs are entered excessively or if the owner forgets the PIN
Solution Approach 1:
The access control system is segmented into multiple independent authentication methods: PIN-based authentication and biometric authentication (fingerprint, face recognition). Each method operates independently through different authentication modules, allowing the system to divide the authentication function into separate pathways. This segmentation ensures that failure of one method (e.g., forgotten PIN) does not result in total loss of access, as alternative methods remain available.
Solution Approach 2:
A controller acts as an intermediary between the authentication modules and the crypto wallet operations. The controller receives authentication requests from multiple sources (PIN input, biometric sensors), verifies credentials through different authentication modules, and coordinates the unlocking process. This intermediary structure allows flexible management of multiple authentication methods and prevents any single point of failure from blocking all access to the wallet.
2Reliability
If multiple authentication methods are implemented for hardware wallets, then security is enhanced and protection against unauthorized access is improved, but the device complexity increases
Solution Approach 1:
The controller is designed with multi-functionality to handle diverse authentication methods through a unified interface. It can process PIN-based authentication, biometric authentication, and other credential verification methods using the same core verification logic. This universal design allows the system to support multiple authentication pathways without proportionally increasing complexity, as the controller adapts to different authentication types through configurable parameters rather than requiring separate dedicated hardware for each method.
Data Source
AI summary
Systems, methods, and devices for access control of crypto wallets. A crypto wallet may interoperate with multiple wallet controller devices. By implementing various key exchange mechanisms, instructions from the wallet controller devices may be securely provided to the crypto wallets, and the crypto wallets may verify the source of the instructions. By implementing these mechanisms, a risk of theft or unauthorized transfer of cryptocurrency associated with the hardware wallet is ameliorated.