Patent ID: 11917074
Assignee: SECUVE CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 4:
5. The electronic signature authentication system based on biometric information of claim 1, wherein the user device generates a handwritten signature for final document confirmation through a user authentication process in response to the signature request, requests registration of the handwritten signature for final document confirmation to the authentication server, calculates a hash value of the electronic document received from an electronic document device and a hash value of the handwritten signature for final document confirmation, generates a first electronic signature value for the electronic document received from the electronic document provider by encrypting the hash value of the electronic document received from the electronic document provider with the private key of the signer, and generates a second electronic signature value for the handwritten signature for final document confirmation by encrypting the hash value of the handwritten signature for final document confirmation with the private key of the signer.