Secret authentication code adding device, secret authentication code adding method, and program
US10972271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2016 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Aug 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A secure text having an authentication code is efficiently created. A key generation part 12 generates secure texts ([x], [α], [β]) of “x”, “α” and “β” that are values satisfying xα=β. A secure text generation part 13 generates secure texts [ai] of random values “ai” for i=1, . . . , N. An authentication code generation part 14 generates authentication codes [γ(ai)] by multiplying the secure texts [ai] by the secure text [α] for i=1, . . . , N. A verification value generation part 15 generates a secure text [w] of a verification value “w” using the secure texts ([x], [α], [β]), the secure text [ai] and the authentication code [γ(ai)]. A verification value determination part 16 determines whether the verification value “w” is equal to zero or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.