Cryptographic operations using a key hierarchy
US8850227B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2012 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Oct 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3234
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of the subject technology relate to systems, methods, and machine-readable media for performing a cryptographic operation. A system can be configured to submit a request, to a security device, for a decrypted user encryption key, wherein the security device is configured to decrypt the user encryption key by unbinding the user encryption key using a user authorization key. The system can receive, in response to the submitted request, the decrypted user encryption key and decrypt authorization data for a cryptographic key using the decrypted user encryption key. The system can submit a request for the security device to load the cryptographic key, wherein authorization data is used to authorize the request, and submit a request for the security device to perform a cryptographic operation using the loaded cryptographic key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.