A system for determining the multiplicative inverse of an element of GF(2.sup.m) by raising the element to the power 2.sup.m -2. The system may raise the element .alpha..sup.j to the power 2.sup.m -2 by repeatedly multiplying the element by itself 2.sup.m -3 times. Alternatively, the system may produce...http://www.google.fr/patents/US6279023?utm_source=gb-gplus-shareBrevet US6279023 - System for computing the multiplicative inverse of an element of a Galois field without using tables
System for computing the multiplicative inverse of an element of a Galois ...
