Signing and verifying mutable structured documents
US11593495B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2020 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Sep 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/629
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A structured document is verified for changes that are made during and after deployment of an application. The structured document includes first fields that are designated as mutable, and second fields that are designated as immutable. An attempted change is detected to the structured document during or after deployment of the application. Upon detecting the attempted change, a digital signature is generated of the second fields of the structured document. A determination is made whether the generated digital signature of the second fields matches a reference digital signature of the second fields. Upon determining that the generated digital signature matches the reference digital signature, the change to the structured document is permitted. Upon determining that the generated digital signature does not match the reference digital signature, the change is blocked to the structured document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.