romulus-xof.h

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/*
 * Copyright (C) 2021 Southern Storm Software, Pty Ltd.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
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 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
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#ifndef LWCRYPTO_ROMULUS_XOF_H
#define LWCRYPTO_ROMULUS_XOF_H

#include "romulus-hash.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
    romulus_hash_state_t hash;  
    unsigned char out[ROMULUS_HASH_SIZE]; 
    unsigned long mgf1_count;   
} romulus_xof_state_t;

int romulus_xof
    (unsigned char *out, const unsigned char *in, size_t inlen);

void romulus_xof_init(romulus_xof_state_t *state);

void romulus_xof_absorb
    (romulus_xof_state_t *state, const unsigned char *in, size_t inlen);

void romulus_xof_squeeze
    (romulus_xof_state_t *state, unsigned char *out, size_t outlen);

#ifdef __cplusplus
}
#endif

#endif