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Trusted interface unit (TIU) and method of making and using the same

  • US 7,734,844 B2
  • Filed: 08/19/2004
  • Issued: 06/08/2010
  • Est. Priority Date: 08/19/2003
  • Status: Active Grant
First Claim
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1. A method of transmitting data over a network, the method comprising:

  • receiving data from a partition within a node on the network, the node being configured to transmit data associated with a plurality of sensitivity levels, the partition characterized by a sensitivity level;

    determining an identity of the partition within the node;

    adding a label to the data received from the partition, the label identifying the partition, and the sensitivity level of the partition, from which the data was received;

    obtaining a cryptographic key based on at least an identity of the partition and the sensitivity level of the partition, the cryptographic key being uniquely associated with the label added to the data;

    encrypting the data with the cryptographic key; and

    transmitting the data over the network.

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