Semiconductor device including encryption section, semiconductor device including external interface, and content reproduction method
US7340614B2 · kind B2 · utility
21Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A secure LSI device 1 includes an encryption section 2 for encrypting a program, and an external I/F 50 for inputting/outputting a program or data from/to an external memory 100. In the encryption section 2, the operation of a private key arithmetic processing section 20 is prohibited with respect to a sequence whose execution is determined by a key-generation/update sequencer 30 to be impermissible. In the external I/F 50, a program processing section 51 and a data processing section 55 are structured independently from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.