Indexing encrypted files by impersonating users
US8079065B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Jun 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0407
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and computer-readable media for indexing an encrypted file by impersonating a user is provided. A set of keys may be associated with a particular encrypted file. Once these keys are identified, the users who own these keys may then be identified by consulting an association of keys to users, which may be updated immediately upon the addition of new keys. If one of the users is currently logged on, the logon information associated with that user may be used to access the content of the encrypted file. The encrypted file may then be indexed based on the accessed content. To allow more than one user to use the same index, security identifiers may be assigned to index records associated with encrypted files to protect content of encrypted files from unauthorized users.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.