Method and system for securely programming OTP memory
US8918575B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2009 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Apr 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/572
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A semiconductor chip may be operable to receive and copy an OTP programming vector presented by the semiconductor chip programming device into its memory after it boots up from the boot read-only memory (ROM). The OTP programming vector which is a computer program may comprise an encrypted data to be programmed into the one-time programmable (OTP) memory in the semiconductor chip and may be signed with an electronic signature. The semiconductor chip may be operable to authenticate the OTP programming vector in the memory. The authenticated OTP programming vector in the memory may be executed to decrypt the data and program the data in a random data format into the OTP memory and then report the status via one or more general purpose input/output (GPIO) pins on the semiconductor chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.