System and method for encrypting and decrypting data
US8638929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Apr 27, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided for creating an encrypted data file from a data file having a sample entry box and a media data box. The sample entry box has description information therein. The media data box includes media data therein. The method includes: receiving the data file; encrypting the media data within the media data box with an encryption key; replacing the sample entry box with an encoded box; creating a sinf box within the encoded box; creating a form a box within the sinf box; and creating an schm box within the sinf box. The schm box indicates the type of formatting of the encrypted media data. The encoded box does not include an initial counter that may be used to decrypt the encrypted media data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.