/usr/include/wolfssl/wolfcrypt/hmac.h is in libwolfssl-dev 3.13.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | /* hmac.h
*
* Copyright (C) 2006-2017 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#ifndef NO_HMAC
#ifndef WOLF_CRYPT_HMAC_H
#define WOLF_CRYPT_HMAC_H
#include <wolfssl/wolfcrypt/types.h>
#ifndef NO_MD5
#include <wolfssl/wolfcrypt/md5.h>
#endif
#ifndef NO_SHA
#include <wolfssl/wolfcrypt/sha.h>
#endif
#if !defined(NO_SHA256) || defined(WOLFSSL_SHA224)
#include <wolfssl/wolfcrypt/sha256.h>
#endif
#ifdef WOLFSSL_SHA512
#include <wolfssl/wolfcrypt/sha512.h>
#endif
#ifdef HAVE_BLAKE2
#include <wolfssl/wolfcrypt/blake2.h>
#endif
#ifdef HAVE_FIPS
/* for fips */
#include <cyassl/ctaocrypt/hmac.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef HAVE_FIPS
#ifdef WOLFSSL_ASYNC_CRYPT
#include <wolfssl/wolfcrypt/async.h>
#endif
enum {
HMAC_FIPS_MIN_KEY = 14, /* 112 bit key length minimum */
IPAD = 0x36,
OPAD = 0x5C,
/* If any hash is not enabled, add the ID here. */
#ifdef NO_MD5
WC_MD5 = 0,
#endif
#ifdef NO_SHA
WC_SHA = 1,
#endif
#ifdef NO_SHA256
WC_SHA256 = 2,
#endif
#ifndef WOLFSSL_SHA512
WC_SHA512 = 4,
#endif
#ifndef WOLFSSL_SHA384
WC_SHA384 = 5,
#endif
#ifndef HAVE_BLAKE2
BLAKE2B_ID = 7,
#endif
#ifndef WOLFSSL_SHA224
WC_SHA224 = 8,
#endif
/* Select the largest available hash for the buffer size. */
#if defined(WOLFSSL_SHA512)
MAX_DIGEST_SIZE = WC_SHA512_DIGEST_SIZE,
HMAC_BLOCK_SIZE = WC_SHA512_BLOCK_SIZE,
#elif defined(HAVE_BLAKE2)
MAX_DIGEST_SIZE = BLAKE2B_OUTBYTES,
HMAC_BLOCK_SIZE = BLAKE2B_BLOCKBYTES,
#elif defined(WOLFSSL_SHA384)
MAX_DIGEST_SIZE = WC_SHA384_DIGEST_SIZE,
HMAC_BLOCK_SIZE = WC_SHA384_BLOCK_SIZE
#elif !defined(NO_SHA256)
MAX_DIGEST_SIZE = WC_SHA256_DIGEST_SIZE,
HMAC_BLOCK_SIZE = WC_SHA256_BLOCK_SIZE
#elif defined(WOLFSSL_SHA224)
MAX_DIGEST_SIZE = WC_SHA224_DIGEST_SIZE,
HMAC_BLOCK_SIZE = WC_SHA224_BLOCK_SIZE
#elif !defined(NO_SHA)
MAX_DIGEST_SIZE = WC_SHA_DIGEST_SIZE,
HMAC_BLOCK_SIZE = WC_SHA_BLOCK_SIZE,
#elif !defined(NO_MD5)
MAX_DIGEST_SIZE = WC_MD5_DIGEST_SIZE,
HMAC_BLOCK_SIZE = WC_MD5_BLOCK_SIZE,
#else
#error "You have to have some kind of hash if you want to use HMAC."
#endif
};
/* hash union */
typedef union {
#ifndef NO_MD5
wc_Md5 md5;
#endif
#ifndef NO_SHA
wc_Sha sha;
#endif
#ifdef WOLFSSL_SHA224
wc_Sha224 sha224;
#endif
#ifndef NO_SHA256
wc_Sha256 sha256;
#endif
#ifdef WOLFSSL_SHA512
#ifdef WOLFSSL_SHA384
wc_Sha384 sha384;
#endif
wc_Sha512 sha512;
#endif
#ifdef HAVE_BLAKE2
Blake2b blake2b;
#endif
} Hash;
/* Hmac digest */
typedef struct Hmac {
Hash hash;
word32 ipad[HMAC_BLOCK_SIZE / sizeof(word32)]; /* same block size all*/
word32 opad[HMAC_BLOCK_SIZE / sizeof(word32)];
word32 innerHash[MAX_DIGEST_SIZE / sizeof(word32)];
void* heap; /* heap hint */
byte macType; /* md5 sha or sha256 */
byte innerHashKeyed; /* keyed flag */
#ifdef WOLFSSL_ASYNC_CRYPT
WC_ASYNC_DEV asyncDev;
word16 keyLen; /* hmac key length (key in ipad) */
#ifdef HAVE_CAVIUM
byte* data; /* buffered input data for one call */
word16 dataLen;
#endif /* HAVE_CAVIUM */
#endif /* WOLFSSL_ASYNC_CRYPT */
} Hmac;
#endif /* HAVE_FIPS */
/* does init */
WOLFSSL_API int wc_HmacSetKey(Hmac*, int type, const byte* key, word32 keySz);
WOLFSSL_API int wc_HmacUpdate(Hmac*, const byte*, word32);
WOLFSSL_API int wc_HmacFinal(Hmac*, byte*);
WOLFSSL_API int wc_HmacSizeByType(int type);
WOLFSSL_API int wc_HmacInit(Hmac* hmac, void* heap, int devId);
WOLFSSL_API void wc_HmacFree(Hmac*);
WOLFSSL_API int wolfSSL_GetHmacMaxSize(void);
#ifdef HAVE_HKDF
WOLFSSL_API int wc_HKDF_Extract(int type, const byte* salt, word32 saltSz,
const byte* inKey, word32 inKeySz, byte* out);
WOLFSSL_API int wc_HKDF_Expand(int type, const byte* inKey, word32 inKeySz,
const byte* info, word32 infoSz,
byte* out, word32 outSz);
WOLFSSL_API int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
const byte* salt, word32 saltSz,
const byte* info, word32 infoSz,
byte* out, word32 outSz);
#endif /* HAVE_HKDF */
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* WOLF_CRYPT_HMAC_H */
#endif /* NO_HMAC */
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