Firmware encrypting and decrypting method and an apparatus using the same
US7929692B2 · kind B2 · utility
10Cited by
13References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Nov 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/72
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of encrypting and decrypting a firmware used in electronic devices and an apparatus using the same. The firmware encryption method includes, receiving a predetermined special key data; generating an encryption key data from the predetermined special key data using a predetermined random number; generating an encryption data corresponding to firmware address information to be stored to a memory based on the encryption key data; and generating an encrypted firmware data by performing an XOR operation on the encryption data and firmware data to be stored in the firmware address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.