Apparatus and method for secure filed upgradability with hard wired public key
US7131001B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Feb 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0662
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and for enabling functionality of a component, wherein the apparatus includes an identification module having an identification number stored therein, and a hash function module in communication with the identification module. A host is provided and is in communication with the identification module, and a guess register in communication with the host is provided. An encryption module is provided and is in communication with the guess register, and a public key module in communication with the encryption module is provided, wherein the public key module has a public key stored therein. A comparator in communication with the encryption module and the hash function module is provided, such that the comparator may compare a first bit string to a second bit string to generate a function enable output for the component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.