Data management system and method for a limited capacity cryptographic storage unit
US6393565B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1998 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A data management system and method for a limited cryptographic storage unit, such as a smartcard or other hardware token, includes a cryptographic data manager that interfaces with the limited capacity cryptographic storage unit and a data overflow memory coupled to the cryptographic data manager. The cryptographic data manager stores cryptographic data, such as decryption private keys or other secret cryptographic data, in the overflow memory from the limited capacity cryptographic storage unit based on a limited capacity storage unit data update condition. The cryptographic data manager may serve as a secondary cryptographic data manager that receives the cryptographic data from an original cryptographic data storage device, or primary storage device such as a server that generates the cryptographic data, that stores a history of the cryptographic data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.