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System and method for secure replacement of high level cryptographic keys in a personal security device

  • US 7,085,386 B2
  • Filed: 12/07/2001
  • Issued: 08/01/2006
  • Est. Priority Date: 12/07/2001
  • Status: Active Grant
First Claim
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1. A data processing system for initially generating and installing at least one personal security device PSD master key replacement key and at least one PSD master key inside at least one PSD, said system comprising:

  • a first server including a data storage section, wherein said first server is functionally connected to a first hardware security module HSM and a PSD writer;

    said PSD writer functionally connected to said first server and said at least one PSD;

    said at least one PSD including a non-mutable unique identification number to be sent to said first HSM, a security executive, a first high level key slot and a second high level key slot, wherein said PSD is functionally connected to said PSD writer;

    said first HSM including at least one stored public key, at least one stored master key data block, at least one stored master key replacement key data block and a random number generator that generates a random number, wherein said first HSM is functionally connected to said first server;

    said first HSM comprising a first diversification section that uses said random number to diversify said master key replacement key data block, which generates a unique key replacement key associated with said non-mutable unique identification number.

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