System and method for warranting electronic mail using a...

Details System and method for warranting electronic mail using a... System and method for warranting electronic mail using a...

H - Electricity

04

L

H04L 9/30 (2006.01) H04L 9/32 (2006.01) H04L 12/54 (2006.01)

Patent

CA 2457478

The present invention provides a method and system for warranting electronic mail using a hybrid public key encryption scheme. In one embodiment, the sender contacts an authentication server which first identifies the sender as being allowed to send through the server, and secondly signs his e-mail using a private key in order to send to the recipient. Upon receipt, the recipient can then verify that the sender is indeed authenticated by the authentication server by contacting the authentication server, requesting the sender's public key and using this public key to validate the signature contained in the e-mail. It is possible that the authentication server may itself send the e-mail to the recipient's mail server, or it may simply return the signature to the sender for sending to the recipient along with the original e-mail using the sender's existing outgoing e-mail server.

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