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

Claim 12:
13. The electronic signature authentication system based on biometric information of claim 12, wherein the authentication server, in response to a verification request for the electronic document, extracts the hash value calculated by the electronic document device for the electronic document and the fourth electronic signature value by decrypting the fifth encryption data combined to the electronic file to be verified with the private key of the authentication server, calculates a hash value of an electronic document extracted from the electronic file to be verified, and verifies integrity of the electronic document assuring that the electronic document extracted from the electronic file to be verified is the electronic document generated by the electronic document provider by comparing the hash value extracted by decrypting the fourth electronic signature value with the public key of the electronic document provider, the hash value calculated by the electronic document device for the electronic document and extracted from the fifth encryption data, and the hash value calculated by the authentication server for the electronic document extracted from the electronic file to be verified with each other.