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Transfer of valuable information between a secure module and another module

DC CAFC
  • US 5,940,510 A
  • Filed: 01/31/1996
  • Issued: 08/17/1999
  • Est. Priority Date: 01/31/1996
  • Status: Expired due to Term
First Claim
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1. A system for communicating data securely, comprising:

  • a first portable module comprising;

    a nonvolatile memory for storing a first data;

    a first real time clock circuit for time stamping data transactions;

    a counter for counting a transaction count;

    an input/output circuit;

    a substantially unique electronically readable identification number readable by said input/output circuit; and

    a memory control circuit in electrical communication with said nonvolatile memory, said real time clock, said counter, and said input/output circuit;

    a portable module reader that can be placed in communication with said first portable module, said portable module reader can be connected to a plurality of other devices;

    a secure microcontroller based module in electronic communication with said portable module reader, said secure microcontroller comprising;

    a microcontroller core;

    a math coprocessor, in communication with said microcontroller core, for processing encryption calculations;

    an energy circuit for storing energy;

    a memory circuit connected to said microcontroller core;

    a memory circuit in communication with said microcontroller core; and

    a second real time clock circuit in communication with said microcontroller,said combination of said portable module reader and said secure microcontroller performing secure data transfers with said first portable module.

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