Cryptography processing device and cryptography processing method
US9166785B2 · kind B2 · utility
0Cited by
3References
12Claims
0Family size
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Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Apr 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A device that uses homomorphic encryption is disclosed. The device includes a public key data generator configured to generate public key data, and a secret key data generator configured to generate secret key data that includes, as a secret key, an integer that is an element of a matrix obtained as a product of the first public key matrix element and an inverse matrix of the secret key matrix and that is not a multiple of the plain text space size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.