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

Claim 7:
8. The electronic signature authentication system based on biometric information of claim 7, wherein the user device generates a first encryption data by encrypting the hash value of the electronic document received from the electronic document device and the first electronic signature value for the electronic document with the public key of the electronic document provider; generates a second encryption data by encrypting the hash value of the electronic document received from the electronic document device and the first electronic signature value for the electronic document with the public key of the authentication server; generates a third encryption data by encrypting the handwritten signature for final document confirmation, the hash value of the handwritten signature for final document confirmation, and the second electronic signature value for the handwritten signature for final document confirmation with the public key of the authentication server, generates a fourth encryption data by encrypting the at least one handwritten signature for document confirmation inserted into the electronic document, the hash value of the at least one handwritten signature for document confirmation, and a third electronic signature value for the at least one handwritten signature with the public key of the authentication server, and provides the first through fourth encryption data to the electronic document device.