Patent ID: 7328338
Filing Date: 2008-02-05
Classification: G06Q,G07F

Abstract:
1. A method of performing a transaction in a communication system between a first and a second participant wherein said second participant permits a service to be provided to said first participant in exchange for a payment, said method comprising the steps of: a) upon initiation of said transaction by said first participant, said second participant sending a first message to said first participant, said first message including information pertaining to said second participant; b) said first participant verifying said information pertaining to said second participant; c) said first participant generating a first value and a second value; d) said first participant preparing a second message comprising said first value; e) said first participant preparing a digital signature using said second message; f) said first participant sending said digital signature and information pertaining to said first participant to said second participant; g) said second participant verifying said information pertaining to said first participant; h) said second participant obtaining said second message using said digital signature and obtaining said first value using said second message; i) said second participant sending said first value to said first participant to acknowledge provision of said service; and i) said first participant verifying said first value and sending said second value to said second participant to enable said second participant to obtain said payment from a third participant using said second value.