ascon-x4-c64.c File Reference

#include "ascon-masked-state.h"
#include "ascon-masked-backend.h"
#include "core/ascon-util.h"

Go to the source code of this file.

Macros
#define	and_not_xor(x, y, z)
	Computes x ^= (~y & z) with a 4-share masked representation. More...
#define	ROUND_CONSTANT(round)    (~(uint64_t)(((0x0F - (round)) << 4) | (round)))

Functions
void	ascon_x4_permute (ascon_masked_state_t *state, uint8_t first_round, uint64_t preserve[3])

Macro Definition Documentation

and_not_xor

#define and_not_xor	(		x,
			y,
			z
	)

Value:

    do { \
        x##_a ^= (~(y##_a) & z##_a); \
        x##_a ^= (ascon_mask64_unrotate_share1_0(y##_b) & z##_a); \
        x##_a ^= (ascon_mask64_unrotate_share2_0(y##_c) & z##_a); \
        x##_a ^= (ascon_mask64_unrotate_share3_0(y##_d) & z##_a); \
        \
        x##_b ^= (ascon_mask64_rotate_share1_0(~(y##_a)) & z##_b); \
        x##_b ^= (y##_b & z##_b); \
        x##_b ^= (ascon_mask64_unrotate_share2_1(y##_c) & z##_b); \
        x##_b ^= (ascon_mask64_unrotate_share3_1(y##_d) & z##_b); \
        \
        x##_c ^= (ascon_mask64_rotate_share2_0(~(y##_a)) & z##_c); \
        x##_c ^= (ascon_mask64_rotate_share2_1(y##_b) & z##_c); \
        x##_c ^= (y##_c & z##_c); \
        x##_c ^= (ascon_mask64_unrotate_share3_2(y##_d) & z##_c); \
        \
        x##_d ^= (ascon_mask64_rotate_share3_0(~(y##_a)) & z##_d); \
        x##_d ^= (ascon_mask64_rotate_share3_1(y##_b) & z##_d); \
        x##_d ^= (ascon_mask64_rotate_share3_2(y##_c) & z##_d); \
        x##_d ^= (y##_d & z##_d); \
    } while (0)

Computes x ^= (~y & z) with a 4-share masked representation.

Parameters

x	Output variable to XOR with.
y	First input variable.
z	Second input variable.

Definition at line 36 of file ascon-x4-c64.c.

ROUND_CONSTANT

#define ROUND_CONSTANT

(

round

)

(~(uint64_t)(((0x0F - (round)) << 4) | (round)))

Definition at line 61 of file ascon-x4-c64.c.

Function Documentation

ascon_x4_permute()

void ascon_x4_permute	(	ascon_masked_state_t *	state,
		uint8_t	first_round,
		uint64_t	preserve[3]
	)

Definition at line 64 of file ascon-x4-c64.c.