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