Data security method and system
US8621223B2 · kind B2 · utility
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1References
18Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Sep 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3247
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of verifying integrity of a digital file includes receiving the digital file subsequent to exposure to a foreign environment and validating the digital file. The received digital file has an appended signature label that includes one or both of a first hash value and a digital signature. Validating the digital file includes hashing the digital file to obtain a second hash value, retrieving the first hash value from the signature label, and comparing the first hash value and second hash value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.