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

Claim 10:
11. The electronic signature authentication system based on biometric information of claim 8, wherein the electronic document device verifies that the signer has electronically signed the electronic document as an expectation of the electronic document provider by extracting the hash value of the electronic document received by the user device and the first electronic signature value by decrypting the first encryption data with the private key of the electronic document provider, and verifies whether the signer has electronically signed the electronic document in accordance with the intent of the electronic document provider by comparing the hash value acquired by decrypting the first electronic signature value extracted from the first encryption data with the public key of the signer, the hash value of the electronic document extracted from the first encryption data, and the hash value calculated by the electronic document provider for the electronic document with each other.