Method, apparatus, and computer program for generating session keys for encryption of image data
US8005213B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2007 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Jun 21, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2005/91364
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object of this invention is to protect the right of a content holder without any necessity of a special storage medium incorporating a copyright protecting mechanism when the content holder does not coincide with a content creator. Information for encryption key generation is input. An encryption key is generated from the information for encryption key generation. Encryption key verification data is acquired from a storage medium, and the validity of the generated encryption key is authenticated based on the verification data. Generated data is encrypted by using the encryption key whose validity is authenticated by the authentication. The encrypted data is stored in the storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.