Hash-based file comparison
US8543543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2011 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Oct 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/137
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Concepts and technologies are described herein for hash-based file comparison. In accordance with the concepts and technologies disclosed herein, a comparison tool is configured to compare hash values in a first hash list associated with a first file to hash values in a second hash list corresponding to a second file. The hash values are computed for functional blocks of the respective files and therefore can be compared to indicate if the functional blocks of the two files match one another. If the hash values match, the functional blocks associated with the respective hash values can be determined to match, while hash values that do not match can indicate that the corresponding functional blocks do not match one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.