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/*
* Copyright (C) 2015 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* SHA512
* Daniel Beer <dlbeer@gmail.com>, 22 Apr 2014
*
* This file is in the public domain.
*/
#ifndef SHA512_H_
#define SHA512_H_
#include <sys/types.h>
#include <stdint.h>
#include <stddef.h>
#include <string.h>
/* Feed a full block in */
#define SHA512_BLOCK_SIZE 128
/* SHA512 state. State is updated as data is fed in, and then the final
* hash can be read out in slices.
*
* Data is fed in as a sequence of full blocks terminated by a single
* partial block.
*/
struct sha512_state {
uint64_t h[8];
uint8_t partial[SHA512_BLOCK_SIZE];
size_t len;
};
/* Set up a new context */
void sha512_init(struct sha512_state *s);
void sha512_add(struct sha512_state *s, const void *data, size_t len);
/* Fetch a slice of the hash result. */
#define SHA512_HASH_SIZE 64
void sha512_final(struct sha512_state *s, uint8_t *hash);
static inline void *
sha512_final_get(struct sha512_state *s)
{
sha512_final(s, s->partial);
return s->partial;
}
#endif
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