Cold wallet apparatus and method of controlling the same

A method of controlling a cold wallet apparatus, comprising:

• generating, by a homomorphic encryption generation module, homomorphic encryption using personally identifiable sensitive information;
• extracting, by a first authentication code extraction module, an authentication code from the homomorphic encryption;
• extracting, by a second authentication code extraction module, an authentication code from physical unclonable function (PUF) information of the cold wallet apparatus;
• combining, by a private key generation module, the authentication code extracted from the homomorphic encryption and the authentication code extracted from the PUF information to generate a private key;
• and
• performing, by a transaction signature module, a transaction signature using a wallet account and a wallet address generated based on the private key.

A method of controlling a cold wallet apparatus, comprising:

• generating, by a processor, homomorphic encryption using personally identifiable sensitive information;
• extracting, by the processor, an authentication code from the homomorphic encryption;
• extracting, by the processor, an authentication code from PUF information of the cold wallet apparatus;
• combining, by the processor, the authentication code extracted from the homomorphic encryption and the authentication code extracted from the PUF information to generate a private key;
• and
• performing, by the processor, a transaction signature using a wallet account and a wallet address generated based on the private key.