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Multi-party key agreement method using bilinear map and system therefor

  • US 8,447,036 B2
  • Filed: 07/25/2008
  • Issued: 05/21/2013
  • Est. Priority Date: 12/18/2007
  • Status: Expired due to Fees
First Claim
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1. A multi-party key agreement method in which a plurality of participants share a key for encrypting messages communicated among the plurality of participants, the method comprising:

  • allowing each of the participants to be assigned with a secret key from a key generation party;

    allowing each of the participants to generate exchange information;

    allowing each of the participants to transmit its own exchange information to the other participants, such that the exchange information is exchanged between the participants; and

    allowing each of the participants to generate a single shared key on the basis of the received exchange information and its own secret key, wherein the participants encrypt messages for transmission among the participants using the single shared key.

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