Method for raising an argument to an exponential power, for cryptography use, using a processor capable of processing words of sufficient length with an exponent coded in words of k bits with k greater than one

摘要

Method for raising an argument to an exponential power within a finite group comprising an internal composition law, by use of a processor capable of processing words of length k expressed in bits, the exponent being coded in l words of k bits with l greater than or equal to 1. Independent claims are made for a device and computer program for raising an argument to an exponential power.