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Certificate revocation system

  • US 5,666,416 A
  • Filed: 11/16/1995
  • Issued: 09/09/1997
  • Est. Priority Date: 10/24/1995
  • Status: Expired due to Term
First Claim
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1. A method of managing certificates in a communication system having a certifying authority, comprising the steps of:

  • having the certifying authority generate a certificate that includes a public key pk of a digital signature scheme; and

    at a later point time, having the certifying authority produce a digital signature relative to pk that authenticates that the certificate is currently valid.

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