Patent ID: 7340773
Filing Date: 2008-03-04
Classification: G06F,G06Q,G07F

Abstract:
1. A method of confirming the validity of a plurality of items of transaction data transmitted from a remote station to a server across an open communications network, said method comprising the steps of: at said server, storing a task identifier and dispatching a copy of said task identifier to said remote station; at said remote station, for each of said items of transaction data, generating signature data by encryption of a said item of transaction data combined with said copy of said task identifier and dispatching a data set comprising said encrypted signature data, said item of transaction data and identification data to said server; at said server, receiving said dispatched data sets, and for each received data set, selecting an encryption method on the basis of identification data in said data set, and determining the validity of an item of transaction data in said data set by utilising said selected encryption method to determine whether received encrypted signature data in said data set corresponds to data generated from combined data incorporating said stored task identifier; at said server, in response to receiving at least some of said data sets, storing a second task identifier and dispatching a copy of said second task identifier to said remote station; wherein said remote station generates signature data utilizing the copy of the second task identifier; and dispatching with said copy of said second task identifier means for generating user interface means at said remote station; and utilizing said user interface means to generate an item transaction data for dispatch to said server.