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Method, apparatus, system and firmware for secure transactions

  • US 5,748,740 A
  • Filed: 01/31/1996
  • Issued: 05/05/1998
  • Est. Priority Date: 09/29/1995
  • Status: Expired due to Fees
First Claim
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1. An electronic data carrier used for secure transactions comprising:

  • input/output circuitry for communicating to a data processing circuit;

    math coprocessor circuitry electrically connected to said input/output circuitry where said math coprocessor performs encryption calculations;

    microprocessor circuitry electrically connected to said input/output circuitry; and

    memory circuitry electrically connected to said microprocessor circuitry, said electronic data carrier providing secure, encrypted data transfers between said electronic data carrier and said data processing circuit.

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