Digital watermarking for secure transmission between a source component and a node device
US8924730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/608
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for embedding a watermark into a data file and communicating the data file to a particular node from a source component is described. The system includes a particular node, a source component, a node identifier request, a query, a watermark, a permutation key, an encrypted data file, and a node decryption key. The node identifier request is communicated from the source component to the particular node. The watermark is then embedded into the data file by the source component. The permutation key is configured to permute the watermark and the permutation key is changed so the location of the watermark changes. The encrypted data is decrypted at the particular node with the node decryption key that corresponds to the particular node. The particular node recovers the watermark from the data file with the permutation key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.