INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING SYSTEM AND RECORDING MEDIUM USING AN APPARATUS ID AND PROVIDED LICENSE KEY FOR AUTHENTICATION OF EACH INFORMATION TO BE PROCESSED
US6360320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1998 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Apr 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2103
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hash function and a service key are stored in advance in an EEPROM of a DVD player serving as a source. In an EEPROM of a personal computer (PC) serving as a sink, on the other hand, its ID and a license key are stored beforehand. The DVD player requests the PC to transmit the ID. The DVD player then applies the hash function to data resulting from concatenation of the ID with the service key to generate a license key(=hash(ID∥service13 key)). Subsequently, the DVD player generates a source side session key and encrypts the session key by using the generated license key. Then, the DVD player transmits the encrypted source side session key to the PC. The PC decrypts the encrypted source side session key by using the license key stored in its EEPROM to produce a sink side session key which has a value equal to that of the source side session key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.