Object with identity based encryption
US8732481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jun 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3297
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A workflow order is created for the object. Public parameters are received from a key generation center at a computer associated with an object master. A public key is generated at the computer system based on a user identifier and the public parameters, wherein the user identifier is comprised of user related information. The object is encrypted using the public key such that the object cannot be opened without the a private key, wherein the object is a composite document comprising multiple elements of documents of different formats, and wherein the private key is generated in response to a request from an authenticated user using the user identifier at the key generation center. Access to the multiple elements of the object is controlled based on workflow order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.