/*      $NetBSD: blake2s.h,v 1.1 2020/08/20 21:21:05 riastradh Exp $    */

/*-
* Copyright (c) 2015 Taylor R. Campbell
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef _CRYPTO_BLAKE2_BLAKE2S_H
#define _CRYPTO_BLAKE2_BLAKE2S_H

#ifdef _KERNEL
#include <sys/types.h>
#else
#include <stddef.h>
#include <stdint.h>
#endif

struct blake2s {
       uint8_t         b[64];  /* 64-byte buffer */
       uint32_t        h[8];   /* 32-byte state */
       uint64_t        c;      /* 64-bit input byte counter */
       uint8_t         nb;     /* number of bytes in buffer */
       uint8_t         dlen;   /* digest length */
};

#define BLAKE2S_MAX_DIGEST      32
#define BLAKE2S_MAX_KEY         32

void    blake2s_init(struct blake2s *, size_t, const void *, size_t);
void    blake2s_update(struct blake2s *, const void *, size_t);
void    blake2s_final(struct blake2s *, void *);
void    blake2s(void *, size_t, const void *, size_t, const void *, size_t);
int     blake2s_selftest(void);

#endif  /* _CRYPTO_BLAKE2_BLAKE2S_H */