Circuit personalization
US8384412B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Sep 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/73
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method distributes personalized circuits to one or more parties. The method distributes a generic circuit to each party, encrypts a unique personalization value using a secret encryption key, and transmits each encrypted personalization value to the corresponding party. Each party then stores the encrypted personalization value in their circuit. The stored encrypted personalization value allows a piece of software to be properly executed by the circuit. A semiconductor integrated circuit is arranged to execute a piece of software that inputs a personalization value as an input parameter. The circuit comprises a personalization memory arranged to store an encrypted personalization value; a key memory for storing a decryption key; a control unit comprising a cryptographic circuit arranged to decrypt the encrypted personalization value using the decryption key; and a processor arranged to receive the decrypted personalization value and execute the software using the decrypted personalization value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.