Data conversion function processor
US8295479B2 · kind B2 · utility
1Cited by
1References
20Claims
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Key dates
| Filing date | Jul 12, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | May 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a MISTY1 FI function, an exclusive OR to which a round key KIij2 is inputted is arranged between an exclusive OR arranged on a 9-bit critical path in a first MISTY structure and a zero-extend conversion connected to the branching point of a 7-bit right system data path. Then, a 9-bit round key KIij1 is truncate-converted to seven bits, the exclusive OR of the seven bits and the round key KIij1 is calculated by an exclusive OR and the calculation result is inputted to an exclusive OR arranged on the right system data path in the second stage MISTY structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.