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Smart card loading transactions using wireless telecommunications network

  • US 9,020,853 B2
  • Filed: 03/08/2013
  • Issued: 04/28/2015
  • Est. Priority Date: 07/30/1999
  • Status: Expired due to Fees
First Claim
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1. A method of loading value over a wireless telecommunications network onto a smart card using a mobile telephone handset, said method comprising:

  • receiving at a subscriber identification module (SIM) within a mobile telephone handset a request from a user to load a load value onto a smart card that communicates with said handset;

    generating, by said smart card, a cryptographic signature S1 using a first cryptographic key shared between said smart card and an issuer of said smart card;

    sending a funding account identifier from said smart card to said SIM;

    preparing a load data message that includes said load value, said funding account identifier, and said cryptographic signature S1;

    sending said load data message over said telecommunications network from said SIM of said handset to a gateway server computer;

    receiving an approval response message from said gateway server computer at said SIM of said handset, said approval response message including a cryptographic signature S2 and an approval to load said load value onto said smart card, wherein said cryptographic signature S2 is generated using a second cryptographic key shared between said smart card and said issuer of said smart card;

    validating, by said smart card, said cryptographic signature S2; and

    loading said load value into a stored-value application of said smart card.

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