Electronic data storage apparatus with key management function and electronic data storage method
US6915434B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1999 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jun 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A storage apparatus includes a key management unit for managing an individual key unique to the apparatus and a common key shared with other storage apparatuses, and an encryption unit for performing an encrypting process or verifying data for performing the encrypting process on electronic data stored in the apparatus to which the unit belongs using the individual key, and performing the encrypting process or verifying the data on the electronic data transmitted to or received from another apparatus using the common key. Thus, the apparatus communicates data using an applicable common key in a local environment and a global environment, appropriately manages a key in each environment, and guarantees the security of the electronic data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.