Concealing apparatus, decoding apparatus, concealing method, and decoding method
US9984239B2 · kind B2 · utility
0Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2016 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Aug 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to an embodiment, a concealing apparatus includes a concealing processor, a mapping information generator, a tag generator, and a concealed, information output unit. The concealing processor is configured to generate a concealed text by concealing a plaintext with a concealing key. The mapping information generator is configured to generate mapping information that is mapped to a keyword for retrieving the plaintext. The tag generator is configured to generate a tag based on the keyword and the mapping information. The concealed information output unit is configured to output the concealed text and the tag as a pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.