Air-Gapped Cryptocurrency Wallet With One-Way Transaction Broadcast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cryptocurrency wallets are vulnerable to remote hacking due to the need for electronic connections for transactions, compromising the security of private keys and funds.
Innovation Solution
A cryptocurrency wallet device that is electronically isolated from other devices, using a unidirectional communication hardware to broadcast transactions and a man-machine interface for user input, ensuring no direct data reception from external sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic connections are used for cryptocurrency wallet transactions, then transaction functionality and ease of operation are improved, but security against remote hacking deteriorates
Solution Approach 1:
The patent extracts the cryptographic operations (key generation, signing) from any networked environment and places them in an air-gapped offline device. The private key never leaves the offline device, and only signed transactions (not the key itself) are transferred to online devices for broadcasting, thus removing the vulnerability source while maintaining functionality.
Solution Approach 2:
The patent introduces an intermediary offline device that acts as a secure bridge between the user and the cryptocurrency network. This offline signing device mediates all transactions by signing them locally without network connection, then transferring only the signed result to online devices, preventing direct remote access while enabling transactions.
2Object-affected harmful factors
If air-gapped isolation is implemented, then security against remote access is improved, but transaction broadcasting capability deteriorates
Solution Approach 1:
The patent segments the cryptocurrency wallet functionality into two distinct parts: an offline air-gapped signing device that generates and protects private keys, and an online broadcasting device that handles network communication. This segmentation allows each part to specialize - the offline device provides maximum security while the online device provides broadcasting capability, and they work together through secure transfer of signed transactions.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A digital wallet device for storing and securing cryptocurrency, the digital wallet device is electronically disconnected from other digital devices and comprising: a cryptocurrency integrated circuit (IC) that is isolated from any computer interface; a non-transitory computer readable storage medium mounted on the cryptocurrency IC and storing a private key of a cryptocurrency and a public key of the cryptocurrency; a man-machine interface (MMI) for receiving an input from a user; at least one processor mounted on the cryptocurrency IC for executing code to create a cryptocurrency action based on the input and to sign using the private key; and a unidirectional communication hardware for sending said transaction to a communication device for broadcasting said transaction via a network.