1 /* 2 * Copyright (C) 2015 Felix Fietkau <nbd@openwrt.org> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 /* SHA512 18 * Daniel Beer <dlbeer@gmail.com>, 22 Apr 2014 19 * 20 * This file is in the public domain. 21 */ 22 23 #ifndef SHA512_H_ 24 #define SHA512_H_ 25 26 #include <sys/types.h> 27 #include <stdint.h> 28 #include <stddef.h> 29 #include <string.h> 30 31 /* Feed a full block in */ 32 #define SHA512_BLOCK_SIZE 128 33 34 /* SHA512 state. State is updated as data is fed in, and then the final 35 * hash can be read out in slices. 36 * 37 * Data is fed in as a sequence of full blocks terminated by a single 38 * partial block. 39 */ 40 struct sha512_state { 41 uint64_t h[8]; 42 uint8_t partial[SHA512_BLOCK_SIZE]; 43 size_t len; 44 }; 45 46 /* Set up a new context */ 47 void sha512_init(struct sha512_state *s); 48 49 void sha512_add(struct sha512_state *s, const void *data, size_t len); 50 51 /* Fetch a slice of the hash result. */ 52 #define SHA512_HASH_SIZE 64 53 54 void sha512_final(struct sha512_state *s, uint8_t *hash); 55 56 static inline void * 57 sha512_final_get(struct sha512_state *s) 58 { 59 sha512_final(s, s->partial); 60 return s->partial; 61 } 62 63 #endif 64
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