Addition mask value generator, encryptor and method for generating stream key
US12282771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2022 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Nov 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/30038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An addition mask value generator is provided. A first operation circuit is configured to obtain first intermediate data according to first output mask value and fourth output mask value. A second operation circuit is configured to obtain the addition output mask value of a first mask group according to first intermediate data and fourth input mask value. A third operation circuit is configured to obtain second intermediate data according to second output mask value and third output mask value. A fourth operation circuit is configured to obtain the addition output mask value of a second mask group according to second intermediate data and second input mask value. The first and second addition input mask values of first mask group are first and second input mask values. The first and second addition input mask values of second mask group are third input mask value and first intermediate data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.