Patent · US Active

Data operations using a proxy encryption key

US10917394B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

Mitica Manu · Sammamish, US
Baskar Sridharan · Sammamish, US
Raghunath Ramakrishnan · Madison, US
Sriram K. Rajamani · Bengaluru, IN
Victor Boyko · Brooklyn, US
Pushkar Vijay Chitnis · Bellevue, US
Shastry M. C. Shankara · Bengaluru, IN
Ramarathnam Venkatesan · Redmond, US

Key dates

Filing date	Oct 31, 2019
Grant date	Feb 9, 2021
Priority date	—
Expiry date	Oct 31, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/0884
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Operating upon encrypted data with a particular data scope. A base encryption key is established and associated with the particular data scope, and then stored in a base encryption key store. That base encryption key store might be managed by an application or service that stores base encryption keys for multiple data scopes. A proxy encryption key acts as a kind of proxy for the base encryption key. The proxy encryption key may be used for frequent operations on encrypted data within the particular data scope. Thus, the principles described herein act as a frequency amplifier that allows key-based operations upon the particular data scope to be performed at much higher frequencies than otherwise would be possible by operating directly using the base encryption key.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.