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Internet security system

  • US 7,302,566 B2
  • Filed: 08/28/2003
  • Issued: 11/27/2007
  • Est. Priority Date: 09/13/2002
  • Status: Expired due to Fees
First Claim
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1. A method of preventing unauthorized personnel access to a computer file used to perform a function on the computer comprising:

  • selecting a file;

    inserting a key into the contents of the file, the key being randomly inserted into the contents of the file; and

    , encrypting the file after the key has been inserted using an encryption key, which the encryption key is a second key, separate from the first said key and decrypting the encrypted file using the second key; and

    , scanning the decrypted file to locate the first said key, the decrypted file then being validated for use to perform the function for which it is used if the first said key is found, but the decrypted file not being validated for use if the first said key is not found which is an indication that the file has been altered without authorization.

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