Exclusive OR Fundamental operation of many ciphers Properties 0 0 0 y⊕y=0 y⊕0=y y y⊕z⊕z y10 Exclusive OR Fundamental operation of many ciphers 1 0 1 1 1 0 0 1 1 0 0 0 y z y  z • Properties ➢ y  y = 0 ➢ y  0 = y ➢ y  1 = y ➢ y  z  z = y