Cryptographic separation of users
US10423804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2016 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/402
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are disclosed relating to securely storing data in a computing device. In one embodiment, a computing device includes a secure circuit configured to maintain key bags for a plurality of users, each associated with a respective one of the plurality of users and including a first set of keys usable to decrypt a second set of encrypted keys for decrypting data associated with the respective user. The secure circuit is configured to receive an indication that an encrypted file of a first of the plurality of users is to be accessed and use a key in a key bag associated with the first user to decrypt an encrypted key of the second set of encrypted keys. The secure circuit is further configured to convey the decrypted key to a memory controller configured to decrypt the encrypted file upon retrieval from a memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.