On Multiplying Xsup6supxsup4supxsup2supx1 By Xsup7supx1 In #113
On multiplying (x<sup>6</sup>+x<sup>4</sup>+x<sup>2</sup>+x+1) by (x<sup>7</sup>+x+1) in GF(2<sup>8</sup>) with irreducible polynomial (x<sup>8</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1) we get
This multiple choice question (MCQ) is related to the book/course gs gs124 Introduction Cyber Security. It can also be found in gs gs124 Basic Concepts in Number Theory and Finite Fields - Polynomial and Modular Arithmetic - Quiz No.2.
On multiplying (x6+x4+x2+x+1) by (x7+x+1) in GF(28) with irreducible polynomial (x8 + x4 + x3 + x + 1) we get
x7+x6+ x3+x2+1
x6+x5+ x2+x+1
x7+x6+1
x7+x6+x+1