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Broadcast key distribution apparatus and method using Chinese Remainder

  • US 5,663,896 A
  • Filed: 09/22/1994
  • Issued: 09/02/1997
  • Est. Priority Date: 09/22/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for performing network communication, said apparatus comprising:

  • a plurality of receiver units individually having a prime value and a private key;

    transmitter processing logic selecting a subset of said plurality of receiver units and individually encrypting a master key, K, with each private key of said subset of receiver units;

    said transmitter processing logic further solving a set of relationships that contain values associated with said subset of receiver units wherein a single value, X, solves each relationship, said set of relationships including an individual prime value, an individual encrypted master key, and said single value X for each receiver unit of said subset; and

    broadcast processing logic coupled to communicate with said transmitter processing logic for transmitting said single value, X, to each receiver unit of said plurality of receiver units.

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