Variable security code download for an embedded processor
US6711684B1 · kind B1 · utility
17Cited by
21References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1999 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Sep 13, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2147
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and an apparatus for storing information in a processing device with flexible security are disclosed. In one embodiment, a method stores information within the processing device. The method receives a download via a first input path which includes a first breakable link and stores the download within the processing device. At some point, a key is also stored within the processing device. A ciphertext download is received via a second input path which includes a second breakable link. The ciphertext download is decrypted utilizing the key and the resulting plaintext download is stored within the processing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.