internal-ascon-m.h File Reference

Masked implementation of the ASCON permutation. More...

#include "internal-masking.h"
#include "internal-ascon.h"

Go to the source code of this file.

Data Structures
struct	ascon_masked_state_t
	Structure of the internal state of the masked ASCON permutation. More...

Functions
void	ascon_permute_masked (ascon_masked_state_t *state, uint8_t first_round)
	Permutes the masked ASCON state. More...
void	ascon_mask (ascon_masked_state_t *output, const ascon_state_t *input)
	Converts an unmasked ASCON state into a masked state. More...
void	ascon_unmask (ascon_state_t *output, const ascon_masked_state_t *input)
	Converts a masked ASCON state into an unmasked state. More...
void	ascon_mask_sliced (ascon_masked_state_t *output, const ascon_state_t *input)
	Converts an unmasked sliced ASCON state into a masked state. More...
void	ascon_unmask_sliced (ascon_state_t *output, const ascon_masked_state_t *input)
	Converts a masked ASCON state into an unmasked sliced state. More...

Detailed Description

Masked implementation of the ASCON permutation.

References: http://competitions.cr.yp.to/round3/asconv12.pdf, http://ascon.iaik.tugraz.at/

Function Documentation

void ascon_mask	(	ascon_masked_state_t *	output,
		const ascon_state_t *	input
	)

Converts an unmasked ASCON state into a masked state.

Parameters

output	The output masked state in host byte order.
input	The input unmasked state, in big-endian byte order.

void ascon_mask_sliced	(	ascon_masked_state_t *	output,
		const ascon_state_t *	input
	)

Converts an unmasked sliced ASCON state into a masked state.

Parameters

output	The output masked state in host byte order.
input	The input unmasked state, sliced, in host byte order.

void ascon_permute_masked	(	ascon_masked_state_t *	state,
		uint8_t	first_round
	)

Permutes the masked ASCON state.

Parameters

state	The masked ASCON state to be permuted.
first_round	The first round (of 12) to be performed; 0, 4, or 6.

The input and output state will be in host byte order.

void ascon_unmask	(	ascon_state_t *	output,
		const ascon_masked_state_t *	input
	)

Converts a masked ASCON state into an unmasked state.

Parameters

output	The output unmasked state, in big-endian byte order.
input	The input masked state in host byte order.

void ascon_unmask_sliced	(	ascon_state_t *	output,
		const ascon_masked_state_t *	input
	)

Converts a masked ASCON state into an unmasked sliced state.

Parameters

output	The output unmasked state, sliced, in host byte order.
input	The input masked state in host byte order.