Multi-party secure authentication system, authentication server, intermediate server, multi-party secure authentication method, and program
US9992190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2014 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Nov 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Even when an intermediate server exists, a plurality of servers simultaneously authenticates a user securely. A user apparatus disperses a password. The user apparatus obtains a ciphertext, which is obtained by encrypting a dispersed value. The intermediate server transmits the ciphertext to an authentication server. The authentication server decrypts the ciphertext to obtain the dispersed value. The authentication server determines a verification value. The authentication server obtains a ciphertext. The intermediate server decrypts the ciphertext to obtain the verification value. The intermediate server verifies whether a sum total of the verification values is equal to 0 or not. The authentication server determines a verification value. The authentication server obtains a ciphertext. The authentication server decrypts the ciphertext to obtain the verification value. The authentication server verifies whether a sum total of the verification values is equal to 0 or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.