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A METHOD FOR THE APPLICATION OF IMPLICIT SIGNATURE SCHEMES

  • US 20090086968A1
  • Filed: 12/11/2008
  • Published: 04/02/2009
  • Est. Priority Date: 06/09/2000
  • Status: Active Grant
First Claim
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1. A method for certifying a correspondent through the use of a certifying authority having control of a public key'"'"'s validity, said method comprising the steps of:

  • a) said certifying authority generating a first random number having a value;

    b) said certifying authority generating implicit signature components including a first component generated using said first random number, and a second component generated using said first component and a private key of said certifying authority;

    c) publishing a public key of said certifying authority; and

    d) forwarding said implicit signature components from said certifying authority to said correspondent to enable said first correspondent to generate a new private key using said first component and a new public key using said second component and said public key of said certifying authority;

    wherein said certifying authority recertifies said correspondent'"'"'s certificate by changing said value of said first random number.

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