Hierarchical key management encoding and decoding

  • US 6,907,127 B1
  • Filed: 07/10/2000
  • Issued: 06/14/2005
  • Est. Priority Date: 06/18/1999
  • Status: Active Grant
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First Claim
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1. An apparatus for key management comprising:

  • (a) a multitude of key registers, said multitude of key registers having a hierarchy with levels;

    (b) a multitude of type fields, wherein each type field is associated with a key register;

    (c) a key management controller, said key management controller having a multitude of modes;

    (d) at least one initialization vector;

    (e) key management algorithms; and

    (f) key management functions;

    wherein said mode is determined by the hierarchical level of the key register, and the key management algorithm used is determined by the key management function being used and said mode.

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