Secure memory card with life cycle phases
US8321686B2 · kind B2 · utility
4Cited by
99References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Aug 12, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A secure memory card with encryption capabilities comprises various life cycle states that allow for testing of the hardware and software of the card in certain of the states. The testing mechanisms are disabled in certain other of the states thus closing potential back doors to secure data and cryptographic keys. Controlled availability and generation of the keys required for encryption and decryption of data is such that even if back doors are accessed that previously encrypted data is impossible to decrypt and thus worthless even if a back door is found and maliciously pried open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.