Secure device having key management function and information processing apparatus
US7978857B2 · kind B2 · utility
2Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2007 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A secure device has an input unit for dividing content into a plurality of blocks and inputting the plurality of blocks, a key generating unit for sequentially generating keys for encrypting one or plural blocks, The key sequentially generated by the key generating unit is newly generated when a predetermined condition is satisfied, and varies by every one or plural blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.