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Data processing apparatus and method

  • US 20040111625A1
  • Filed: 01/12/2004
  • Published: 06/10/2004
  • Est. Priority Date: 02/14/2001
  • Status: Abandoned Application
First Claim
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1. An apparatus for generating a cryptographic key, the apparatus comprising:

  • a receiver operable to receive data representative of an analogue source;

    a number generator operable to process the received data to generate an intermediate key representative of the received data, said intermediate key being a number;

    a data store for storing a mapping key, said mapping key being a predetermined number; and

    a key generator operable to combine the intermediate key and the stored mapping key in accordance with a monotonic mapping function to generate the cryptographic key.

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