Method and system for authenticating a data stream
US10263783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2013 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Oct 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for authenticating a data stream includes selecting a number of data fragments of the data stream, defining at least two granularity levels for the selected data fragments, dividing each of the selected data fragments according to the granularity levels, generating a hierarchical authentication structure including elements representing hash values of the divided selected data fragments on the different granularity levels, selecting at least a portion of the hash values of the hierarchical authentication structure for transmission to a receiver, reconstructing the granularity value on the top level of the hierarchical authentication structure based on the transmitted hash values, and performing authentication of the data fragments of the data stream based on comparing the reconstructed value on the top granularity level of the hierarchical authentication structure with the signed value on the top granularity level of the generated hierarchical authentication structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.