#ifndef ROUND_H_ #define ROUND_H_ #include "ascon.h" #include "printstate.h" forceinline void KINIT(word_t* K0, word_t* K1, word_t* K2) { *K0 = WORD_T(0); *K1 = WORD_T(0); *K2 = WORD_T(0); } forceinline void PINIT(state_t* s) { s->x0 = WORD_T(0); s->x1 = WORD_T(0); s->x2 = WORD_T(0); s->x3 = WORD_T(0); s->x4 = WORD_T(0); } forceinline void ROUND(state_t* s, word_t C) { word_t xtemp; /* round constant */ s->x2 = XOR(s->x2, C); /* s-box layer */ s->x0 = XOR(s->x0, s->x4); s->x4 = XOR(s->x4, s->x3); s->x2 = XOR(s->x2, s->x1); xtemp = AND(s->x0, NOT(s->x4)); s->x0 = XOR(s->x0, AND(s->x2, NOT(s->x1))); s->x2 = XOR(s->x2, AND(s->x4, NOT(s->x3))); s->x4 = XOR(s->x4, AND(s->x1, NOT(s->x0))); s->x1 = XOR(s->x1, AND(s->x3, NOT(s->x2))); s->x3 = XOR(s->x3, xtemp); s->x1 = XOR(s->x1, s->x0); s->x3 = XOR(s->x3, s->x2); s->x0 = XOR(s->x0, s->x4); /* linear layer */ xtemp = XOR(s->x0, ROR(s->x0, 28 - 19)); s->x0 = XOR(s->x0, ROR(xtemp, 19)); xtemp = XOR(s->x1, ROR(s->x1, 61 - 39)); s->x1 = XOR(s->x1, ROR(xtemp, 39)); xtemp = XOR(s->x2, ROR(s->x2, 6 - 1)); s->x2 = XOR(s->x2, ROR(xtemp, 1)); xtemp = XOR(s->x3, ROR(s->x3, 17 - 10)); s->x3 = XOR(s->x3, ROR(xtemp, 10)); xtemp = XOR(s->x4, ROR(s->x4, 41 - 7)); s->x4 = XOR(s->x4, ROR(xtemp, 7)); s->x2 = NOT(s->x2); printstate(" round output", s); } #endif /* ROUND_H_ */