Electrical computers and digital processing systems: multicomput – Computer conferencing – Demand based messaging
Reexamination Certificate
2003-06-06
2008-11-04
Jaroenchonwanit, Binjob (Department: 2153)
Electrical computers and digital processing systems: multicomput
Computer conferencing
Demand based messaging
C726S002000, C726S003000, C726S004000
Reexamination Certificate
active
07447744
ABSTRACT:
A method that determines if a sender's message is to be sent to a recipient is presented. A challenge module analyzes the message and sends a challenge message to the sender if the sender is not in the recipient's address store. The challenge message includes a pseudo unique token for the sender recipient pair such that the sender must respond differently to each challenge message for a particular message. In one embodiment, the challenge message requires the sender to obtain a certificate from a certificate authority or a set of authorities.
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Hedberg Erik
Koorland Neil K.
Morris Max G.
Neely Samuel J.
Noursalehi Saeed
Chea Philip J
Jaroenchonwanit Binjob
Microsoft Corporation
Senniger Powers LLP
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