Secure product-sum combination system, computing apparatus, secure product-sum combination method and program therefor
US9064123B2 · kind B2 · utility
3Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2012 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The efficiency of multiplication in secure function computation is increased to make the secret function computation faster than before. Three or more computing apparatuses cooperate to generate a secret value of a random number, perform secure function computation for secret values of arbitrary values by using a function including addition and multiplication to compute concealed function values, and compute a secret value. If the secret value is [0], a concealed function value is output; otherwise, information indicating that tampering has been detected is output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.