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Cryptographic key recovery system

  • US 5,815,573 A
  • Filed: 04/10/1996
  • Issued: 09/29/1998
  • Est. Priority Date: 04/10/1996
  • Status: Expired due to Term
First Claim
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1. A method of generating a cryptographic key for use by a pair of communicating parties while providing for the recovery of said key using a plurality of cooperating key recovery agents, said method comprising the steps of:

  • generating a plurality of shared key parts that are shared with respective key recovery agents;

    generating a nonshared key part that is not shared with any key recovery agent;

    generating said key as a function of said shared key parts and said nonshared key part; and

    making respective ones of said shared key parts available to said key recovery agents to facilitate said recovery of said key using said key recovery agents.

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