Method and system for detecting movement of a signed element in a structured document
US9292619B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jan 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A sending entity creates a structured document and communicates it to a receiving entity includes a transform to ensure document elements are not moved during communication. The structured document comprises a root element and a set of child elements. A child element is protected by a digital signature, prior to being positioned within the document. This element includes a sending entity security policy. The receiving entity includes a transform that determines whether the signed element is in a given position within the received document. The transform evaluates the data string against a set of ancestor elements of the signed element to determine whether the signed element is in the given position. If so, the transform preferably outputs the signed element itself. If the transform determines that the signed element has been moved, however, preferably it outputs a given value other than the signed element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.