Method and apparatus for data permutation/division and recording medium with data permutation/division program recorded thereon
US6578061B1 · kind B1 · utility
20Cited by
5References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 19, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/122
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method for permuting and dividing 16 pieces of k-bit data held in 4k-bit long registers T0. T1, T2 and T3, k being an integer, the data of each register Ti is ANDed with a desired one of mask data (00ffff00), (ff0000ff), (0000ffff) and (ffff0000), and such ANDs are ORed to obtain desired permuted data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.