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File checking using remote signing authority via a network

  • US 7,096,497 B2
  • Filed: 03/30/2001
  • Issued: 08/22/2006
  • Est. Priority Date: 03/30/2001
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprising:

  • a file analyzer to perform a scan operation on an incoming file to produce a scanning result, and to output the scanning result and the scanned file to accompany a digital signature chain;

    a signature generator coupled to the file analyzer to receive both the scanning result and the scanned file and to produce a digital signature of the digital signature chain based on the scanning result and the scanned file, the digital signature chain is verified prior to accessing the incoming file and access to the incoming file is precluded by the file analyzer unless the digital signature accompanies the incoming file; and

    a time stamp indicator coupled to the signature generator, the time stamp indicator to provide information of the scan operation for insertion into the digital signature chain.

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