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Tamper-evident data management

  • US 7,877,607 B2
  • Filed: 08/30/2002
  • Issued: 01/25/2011
  • Est. Priority Date: 08/30/2002
  • Status: Active Grant
First Claim
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1. A data tampering detection system that detects alteration of data resident on a computer, the system implemented on a suitable processing platform, comprising:

  • a data collecting application that collects the data for storage in a digitally signed data log entry;

    a digital signing application, comprising;

    a mechanism for assigning to the data for the log entry, a sequence number and an identification number of the computer,a link to a hash mechanism that generates a digest of at least the sequence number and identification number, anda digital signature mechanism that creates a digital signature and digitally signs the digest, wherein the digital signing application and the data collecting application are located on a smart card, and wherein removal or disabling of the smart card disables the data collecting application and the digital signing application;

    a data writing application that writes the digitally signed digest and the data to a data log as the digitally signed data log entry, wherein the digitally signed data and digest are stored on a physical media, and wherein the digitally signed data and digest are transmitted to a vendor by removal of the physical media;

    an encryption mechanism to encrypt the digitally signed digest and the data; and

    a decryption mechanism to decrypt the digitally signed digest and the data.

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