Patent · US Active

Message authentication using signatures

US8429232B1 · kind B1 · utility

34Cited by

7References

3Claims

0Family size

Assignee

Voltage Security, Inc. · US

Inventors

Guido Appenzeller · Menlo Park, US
Timothy Choi · Palo Alto, US
Matthew J. Pauker · San Francisco, US

Key dates

Filing date	Sep 28, 2004
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Feb 12, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L51/48
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Systems and methods are provided for using digital signatures to help distinguish legitimate email from known or trusted organizations from unsolicited email or forged email. Digital signatures may be used in an email body, mail header, or embedded links. The signatures may be verified by a recipient or internet service provider and may be used in conjunction with spam filtering applications.

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