Encryption/decryption method for data limited in value range, apparatus and program therefor
US7512811B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jan 9, 2004 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Dec 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/36
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
On an encrypted object code obtained by encrypting an object code, there is discriminated whether an inhibited code defined in data format is present in a code concerning such encrypted object code, and, in case such inhibited code is judged absent, the encrypted object code is determined as an encryption result of the object code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.