Patents Represented by Attorney, Agent or Law Firm Huchins, Wheeler & Dittmar
  • Patent number: 6292893
    Abstract: A certification revocation system uses a one-way function F to verify the validity of a certificate that includes a first value V. Included are means for receiving a second value V′ and means for iterating F on V′ and for comparing the result thereof to V. The function F is used to verify that a certificate having an issue date D and including a first value V is valid at a date belonging to a sequence of dates after D.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: September 18, 2001
    Inventor: Silvio Micali