### [ L_{0}= ] [ R_{0}= ] What is the result of applying the expansion box to ( R_{0} ) ? [ Eleft(R_{0}right)= ] What is the result of XORing the subkey with ( Eleft(R_{0}right) ) ? [ k_{1} oplus Eleft(R_{0}right)= ] We now apply the S-box transformation. [ Sleft(k_{1} oplus Eleft(R_{0}right)right)= ] Finally we apply the permutation

[ L_{0}= ] [ R_{0}= ] What is the result of applying the expansion box to ( R_{0} ) ? [ Eleft(R_{0}right)= ] What is the result of XORing the subkey with ( Eleft(R_{0}right) ) ? [ k_{1} oplus Eleft(R_{0}right)= ] We now apply the S-box transformation. [ Sleft(k_{1} oplus Eleft(R_{0}right)right)= ] Finally we apply the permutation