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Method and apparatus for performing concryption

  • US 5,479,512 A
  • Filed: 04/28/1994
  • Issued: 12/26/1995
  • Est. Priority Date: 06/07/1991
  • Status: Expired due to Term
First Claim
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1. A method for utilizing a data processor to change the form of data comprising the steps of:

  • a) obtaining the data at the processor in clear form;

    b) obtaining an encryption key at the processor;

    c) the processor performing a multi-step compression operation on said clear-form data;

    d) the processor automatically utilizing said encryption key in conjunction with the results as directly generated by the processor for a selected step of said compression operation in performing an encryption operation, the compression steps of step (c) and the encryption step of step (d) being integrated to be performed as parts of a single operation; and

    e) the processor outputting the resulting compressed and encrypted version of the clear-form data.

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