sha2xx_common.h
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1 /*-
2  * Copyright 2005 Colin Percival
3  * Copyright 2013 Christian Mehlis & René Kijewski
4  * Copyright 2016 Martin Landsmann <martin.landsmann@haw-hamburg.de>
5  * Copyright 2016 OTA keys S.A.
6  * Copyright 2020 HAW Hamburg
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  * notice, this list of conditions and the following disclaimer in the
16  * documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  *
30  * $FreeBSD: src/lib/libmd/sha256.h,v 1.1.2.1 2005/06/24 13:32:25 cperciva Exp $
31  */
32 
33 
50 #ifndef HASHES_SHA2XX_COMMON_H
51 #define HASHES_SHA2XX_COMMON_H
52 
53 #include <string.h>
54 #include <stdint.h>
55 
56 #ifdef __cplusplus
57 extern "C" {
58 #endif
59 
63 typedef struct {
65  uint32_t state[8];
67  uint32_t count[2];
69  unsigned char buf[64];
70 } sha2xx_context_t;
71 
76 #define Ch(x, y, z) ((x & (y ^ z)) ^ z)
77 #define Maj(x, y, z) ((x & (y | z)) | (y & z))
78 #define SHR(x, n) (x >> n)
79 #define ROTR(x, n) ((x >> n) | (x << (32 - n)))
80 #define S0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
81 #define S1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
82 #define s0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ SHR(x, 3))
83 #define s1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ SHR(x, 10))
84 
87 static const uint32_t K[64] = {
88  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
89  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
90  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
91  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
92  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
93  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
94  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
95  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
96  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
97  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
98  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
99  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
100  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
101  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
102  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
103  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
104 };
105 
111 void sha2xx_pad(sha2xx_context_t *ctx);
112 
120 void sha2xx_update(sha2xx_context_t *ctx, const void *data, size_t len);
121 
130 void sha2xx_final(sha2xx_context_t *ctx, void *digest, size_t dig_len);
131 
132 #ifdef __cplusplus
133 }
134 #endif
135 
137 #endif /* HASHES_SHA2XX_COMMON_H */
sha2xx_update
void sha2xx_update(sha2xx_context_t *ctx, const void *data, size_t len)
Add bytes into the hash.
sha2xx_final
void sha2xx_final(sha2xx_context_t *ctx, void *digest, size_t dig_len)
SHA-2XX finalization.
sha2xx_pad
void sha2xx_pad(sha2xx_context_t *ctx)
SHA-2XX initialization.
K
static const uint32_t K[64]
SHA-224 and SHA-256 Constants.
Definition: sha2xx_common.h:87
sha2xx_context_t
Structure to hold the SHA-2XX context.
Definition: sha2xx_common.h:63