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US 8,429,232 B1Granted
Message authentication using signatures
AssigneeVoltage Security, Inc.
InventorsGuido Appenzeller, Timothy Y. Choi, Matthew J. Pauker
Life of this patent
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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.
Claims3
A method for selectively removing links from an email message comprising:
- providing a public key to an email message recipient;
- receiving an email message at the recipient, wherein the email message contains an embedded link;
- extracting a digital signature from the link;
- verifying the digital signature using the public key;
- removing the link from the message if the digital signature from the link is invalid;
- and
- retaining the link in the message if the digital signature from the link is valid.
4 more elements
Dependencies are inferred from the claim text.