Apparatus and method for secure field upgradability with unpredictable ciphertext
US7143294B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jan 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for enabling functionality of a component, wherein the apparatus includes a random number generating module for generating a random number, and a hash function module in communication with the random number generating module. A host is provided in communication with the random number generating module, and at least one memory in communication with the host is included. An encryption module in communication with the at least one memory is provided, and a comparing device in communication with the encryption module and the hash function module is included. The comparing device of the apparatus compares 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.