METHODS FOR SECURING DIGITAL WALLETS USING CHIP-EMBEDDED CARDS

Abstract

The invention relates to a method and system for securing a provided cryptocurrency asset wallet, which uses a user's chip card conforming to ISO 7816 and authenticates the cryptocurrency asset wallet by extracting a unique identifier from the ISO 7816-compliant chip card, and simultaneously extracts a device identifier from the user terminal where the system software is installed. The system software then sends this unique identifier and device identifier to a system server for encryption using two-layer encryption technology via the HMAC_SHA256 algorithm, and if valid, the system server generates a first-layer ciphertext, and by generating a mnemonic phrase through the system, combines this mnemonic phrase with the first-layer ciphertext using AES encryption technology to generate a second-layer ciphertext for the mnemonic phrase; Simultaneously, it stores the second-layer encryption code and device identifier through a secure local storage mechanism on the user's encrypted computing device.

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