Patent · US Expired

Method of cryptography with public key based on the discrete logarithm

US5946397A · kind A · utility

21Cited by

6References

7Claims

0Family size

Assignee

Gemplus, S.C.A. · FR

Inventors

David M'Raihi · Redwood City, US
David Naccache · Paris, FR
Jacques Stern · Paris, FR
Serge Vaudenay · Crissier, CH

Key dates

Filing date	Sep 24, 1997
Grant date	Aug 31, 1999
Priority date	—
Expiry date	Sep 24, 2017

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/3247
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Method of public key cryptography based on the discrete logarithm that makes use of the computation of the variable r=g.sup.k modp where p is a prime number called a modulus, the exponent k is a random number usually with a length of N bits and g is an integer called a base, wherein an entity E carries out operations of authentication and/or of signature, including exchanges of signals with another entity in which this variable comes into play.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.