Apparatus for transfer of secure information between a data carrying module and an electronic device

  • US 6,237,095 B1
  • Filed: 01/06/1998
  • Issued: 05/22/2001
  • Est. Priority Date: 09/29/1995
  • Status: Expired due to Term
First Claim
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1. An apparatus for receiving and transmitting encrypted data, comprising:

  • an input/output interface for receiving a challenge number from an electronic device;

    a microprocessor circuit connected to said input/output interface;

    a coprocessor circuit, connected to said microprocessor circuit;

    a timing circuit connected to the microprocessor, the timing circuit for generating a time stamp;

    a first memory connected to said microprocessor circuit, said first memory for storing a first data object; and

    a second memory connected to said microprocessor circuit, said second memory including instructions readable by said microprocessor circuit to thereby cause said microprocessor circuit to;

    initiate generation of a certificate, said certificate including said challenge number and a second data object; and

    adjust said first data object according to said second data object responsive to a verification signal from said electronic device;

    store a transaction script, the transaction script including at least a representation of the time stamp generated by the timing circuit.

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