Patent · US Active

Efficient retrieval of cryptographic evidence

US7818575B2 · kind B2 · utility

1Cited by

6References

3Claims

0Family size

Assignee

Microsoft Corporation · US

Inventors

David B. Cross · Redmond, US
Kelvin S. Yiu · Seattle, US
Philip J. Hallin · Port Townsend, US
Ryan M. Hurst · Woodinville, US
Vishal Agarwal · Bothell, US

Key dates

Filing date	Jun 24, 2005
Grant date	Oct 19, 2010
Priority date	—
Expiry date	Aug 4, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/80
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An efficient protocol for retrieving cryptographic evidence may be selected by evaluating a local policy and a number of relevant factors. Furthermore, updated cryptographic evidence may be prefetched during a time period in which there is a low volume of requests for cryptographic evidence. This low volume time period may be defined, approximately, as an overlapping window in which both a first cryptographic evidence publication and a second cryptographic evidence publication are valid.

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