Figure7

Figure 7. The function $$ \lambda^k(x,y,\alpha, \beta)_{a,b,c} $$. On the right side, it is the simple form of $$ \lambda^k(x,y,\alpha, \beta)_{a,b,c} $$, where $$ \alpha $$, $$ x $$, $$ \beta $$, $$ y $$ represent the input, $$ a $$, $$ b $$, $$ c $$ represent the three initial bits, and $$ u $$, $$ v $$, $$ c $$ represent three carry bits.