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Signing program data payload sequence in program loading

  • US 8,473,417 B2
  • Filed: 06/06/2011
  • Issued: 06/25/2013
  • Est. Priority Date: 01/16/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • disassembling, on a host computer, a first program file comprising program data into at least one logical data unit;

    partitioning, on said host computer, each of said at least one logical data unit into at least one protocol data unit, the format of said at least one protocol data unit defined by a communication protocol and including a payload portion;

    computing, on said host computer, a first fingerprint over the payload portion of said at least one protocol data unit of said at least one logical data unit; and

    communicating, by said host computer a second program file to a loading terminal configured to communicate with a resource-constrained device, said second program file comprising said program data and one or more members of the group comprising said first fingerprint and an authentication code based at least in part on said first fingerprint.

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