Exclusive OR Fundamental operation of many ciphers yzy⊕z ● Properties 0 >yy=0 0 >y0=y >y1=y y由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