System, processing device, computer program and method, to tranparently encrypt and store data objects such that owners of the data object and permitted viewers are able to view decrypted data objects after entering user selected passwords
US9112699B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2014 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Feb 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/061
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cryptographic system makes everyday data objects, such as a document or conversation, unreadable to anyone other than the owner or those currently having permission to access the data objects. The cryptographic system is transparent by requiring no additional effort on the part of any user in the encryption/decryption process other than entering a user identifier and password. Each document is encrypted with a unique encryption key. Changes to data object access permissions are immediately honored and enforced by enabling or disabling access to certain decryption keys. Decryption of data objects requires information known only to the owner of the data object or those permitted to access the data object. This decryption information is not stored anywhere in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.