System for keying protected electronic data to particular media to prevent unauthorized copying using a compound key
US7246246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2003 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Jun 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system an method for distribution of electronic data over a network infrastructure that includes a client device for operation by a user desiring to receive the electronic data and server that contains the electronic data and offering the electronic data for downloading to the client device via the network infrastructure. The client device communicates a compound data key that includes a unique serial number associated with a particular piece of media to which the electronic data is to be stored to the server, vendor information and user information. The server encrypts the electronic data using the compound key, and downloads the encrypted electronic data to the client computer, where the client computer writes the encrypted electronic data to the particular piece of media such that the encrypted electronic data may only be accessed from the particular piece of media. The electronic data is decrypted for use by the apparatus or another device attached to the apparatus using the compound key as a data key, and the data is accessible from only the one piece of media having the unique serial number and is not accessible from any other media having a different or no identifier. In a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.