Secure boot method and semiconductor memory system using the method
US8443203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2008 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Mar 14, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/575
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor memory system includes an external memory, an internal memory, and a one-time programmable (OTP) memory. The external memory includes a kernel, a public key, first boot information used to authenticate the public key and generate a test secret key, and a second boot loader verifying integrity of the kernel. The internal memory includes a first boot loader that verifies integrity of the second boot loader and generates the test secret key. The OTP memory includes second boot information generated using the public key and a secret key. Since the secure boot method and the semiconductor memory system using the method do not need an additional OTP memory to store a secret key unlike conventional technology, the capacity and recording time of the OTP memory can be reduced to about half compared to the conventional technology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.