Securing decrypted files in a shared environment
US7167982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2001 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, system and computer program product for securing decrypted files in a shared environment. A filter driver in a kernel space may be configured to control service requests to encrypted files stored in a shared area, e.g., a shared directory on a disk unit, accessible by multiple users. The filter driver may receive a service request to open an encrypted document in the shared area issued from an authorized user. Upon receiving the encrypted data, the filter driver may decrypt the encrypted data. The filter driver may subsequently store the decrypted data in a file in a non-shared area, e.g., a non-shared directory. The non-shared area may be accessible only by the authorized user that requested access to the encrypted file. By storing the decrypted data in a file in the non-shared area, a file once decrypted may be protected in a file sharing environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.