[164] | 1 | /* hmac.h
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| 2 | *
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| 3 | * Copyright (C) 2006-2015 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL. (formerly known as CyaSSL)
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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| 20 | */
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| 21 |
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| 22 | #ifdef HAVE_CONFIG_H
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| 23 | #include <config.h>
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| 24 | #endif
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| 25 |
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| 26 | #include <wolfssl/wolfcrypt/settings.h>
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| 27 |
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| 28 | #ifndef NO_HMAC
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| 29 |
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| 30 | #include <wolfssl/wolfcrypt/hmac.h>
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| 31 |
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| 32 | #ifdef HAVE_FIPS
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| 33 | /* does init */
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| 34 | int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 keySz)
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| 35 | {
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| 36 | return HmacSetKey_fips(hmac, type, key, keySz);
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| 37 | }
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| 38 |
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| 39 |
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| 40 | int wc_HmacUpdate(Hmac* hmac, const byte* in, word32 sz)
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| 41 | {
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| 42 | return HmacUpdate_fips(hmac, in, sz);
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| 43 | }
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| 44 |
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| 45 |
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| 46 | int wc_HmacFinal(Hmac* hmac, byte* out)
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| 47 | {
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| 48 | return HmacFinal_fips(hmac, out);
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| 49 | }
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| 50 |
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| 51 |
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| 52 | #ifdef HAVE_CAVIUM
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| 53 | int wc_HmacInitCavium(Hmac* hmac, int i)
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| 54 | {
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| 55 | return HmacInitCavium(hmac, i);
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| 56 | }
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| 57 |
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| 58 |
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| 59 | void wc_HmacFreeCavium(Hmac* hmac)
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| 60 | {
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| 61 | HmacFreeCavium(hmac);
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| 62 | }
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| 63 | #endif
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| 64 |
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| 65 | int wolfSSL_GetHmacMaxSize(void)
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| 66 | {
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| 67 | return CyaSSL_GetHmacMaxSize();
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| 68 | }
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| 69 |
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| 70 | #ifdef HAVE_HKDF
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| 71 |
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| 72 | int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
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| 73 | const byte* salt, word32 saltSz,
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| 74 | const byte* info, word32 infoSz,
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| 75 | byte* out, word32 outSz)
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| 76 | {
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| 77 | return HKDF(type, inKey, inKeySz, salt, saltSz, info, infoSz, out, outSz);
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| 78 | }
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| 79 |
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| 80 |
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| 81 | #endif /* HAVE_HKDF */
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| 82 | #else /* else build without fips */
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| 83 | #ifdef WOLFSSL_PIC32MZ_HASH
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| 84 |
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| 85 | #define wc_InitMd5 wc_InitMd5_sw
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| 86 | #define wc_Md5Update wc_Md5Update_sw
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| 87 | #define wc_Md5Final wc_Md5Final_sw
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| 88 |
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| 89 | #define wc_InitSha wc_InitSha_sw
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| 90 | #define wc_ShaUpdate wc_ShaUpdate_sw
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| 91 | #define wc_ShaFinal wc_ShaFinal_sw
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| 92 |
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| 93 | #define wc_InitSha256 wc_InitSha256_sw
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| 94 | #define wc_Sha256Update wc_Sha256Update_sw
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| 95 | #define wc_Sha256Final wc_Sha256Final_sw
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| 96 |
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| 97 | #endif
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| 98 |
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| 99 | #ifdef HAVE_FIPS
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| 100 | /* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */
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| 101 | #define FIPS_NO_WRAPPERS
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| 102 | #endif
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| 103 |
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| 104 | #include <wolfssl/wolfcrypt/error-crypt.h>
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| 105 |
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| 106 |
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| 107 | #ifdef HAVE_CAVIUM
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| 108 | static void HmacCaviumFinal(Hmac* hmac, byte* hash);
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| 109 | static void HmacCaviumUpdate(Hmac* hmac, const byte* msg, word32 length);
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| 110 | static void HmacCaviumSetKey(Hmac* hmac, int type, const byte* key,
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| 111 | word32 length);
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| 112 | #endif
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| 113 |
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| 114 | static int InitHmac(Hmac* hmac, int type)
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| 115 | {
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| 116 | int ret = 0;
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| 117 |
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| 118 | hmac->innerHashKeyed = 0;
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| 119 | hmac->macType = (byte)type;
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| 120 |
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| 121 | if (!(type == MD5 || type == SHA || type == SHA256 || type == SHA384
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| 122 | || type == SHA512 || type == BLAKE2B_ID))
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| 123 | return BAD_FUNC_ARG;
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| 124 |
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| 125 | switch (type) {
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| 126 | #ifndef NO_MD5
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| 127 | case MD5:
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| 128 | wc_InitMd5(&hmac->hash.md5);
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| 129 | break;
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| 130 | #endif
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| 131 |
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| 132 | #ifndef NO_SHA
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| 133 | case SHA:
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| 134 | ret = wc_InitSha(&hmac->hash.sha);
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| 135 | break;
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| 136 | #endif
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| 137 |
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| 138 | #ifndef NO_SHA256
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| 139 | case SHA256:
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| 140 | ret = wc_InitSha256(&hmac->hash.sha256);
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| 141 | break;
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| 142 | #endif
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| 143 |
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| 144 | #ifdef WOLFSSL_SHA384
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| 145 | case SHA384:
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| 146 | ret = wc_InitSha384(&hmac->hash.sha384);
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| 147 | break;
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| 148 | #endif
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| 149 |
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| 150 | #ifdef WOLFSSL_SHA512
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| 151 | case SHA512:
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| 152 | ret = wc_InitSha512(&hmac->hash.sha512);
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| 153 | break;
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| 154 | #endif
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| 155 |
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| 156 | #ifdef HAVE_BLAKE2
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| 157 | case BLAKE2B_ID:
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| 158 | ret = wc_InitBlake2b(&hmac->hash.blake2b, BLAKE2B_256);
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| 159 | break;
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| 160 | #endif
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| 161 |
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| 162 | default:
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| 163 | return BAD_FUNC_ARG;
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| 164 | }
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| 165 |
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| 166 | return ret;
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| 167 | }
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| 168 |
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| 169 |
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| 170 | int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length)
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| 171 | {
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| 172 | byte* ip = (byte*) hmac->ipad;
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| 173 | byte* op = (byte*) hmac->opad;
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| 174 | word32 i, hmac_block_size = 0;
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| 175 | int ret;
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| 176 |
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| 177 | #ifdef HAVE_CAVIUM
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| 178 | if (hmac->magic == WOLFSSL_HMAC_CAVIUM_MAGIC)
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| 179 | return HmacCaviumSetKey(hmac, type, key, length);
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| 180 | #endif
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| 181 |
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| 182 | ret = InitHmac(hmac, type);
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| 183 | if (ret != 0)
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| 184 | return ret;
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| 185 |
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| 186 | #ifdef HAVE_FIPS
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| 187 | if (length < HMAC_FIPS_MIN_KEY)
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| 188 | return HMAC_MIN_KEYLEN_E;
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| 189 | #endif
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| 190 |
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| 191 | switch (hmac->macType) {
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| 192 | #ifndef NO_MD5
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| 193 | case MD5:
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| 194 | {
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| 195 | hmac_block_size = MD5_BLOCK_SIZE;
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| 196 | if (length <= MD5_BLOCK_SIZE) {
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| 197 | XMEMCPY(ip, key, length);
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| 198 | }
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| 199 | else {
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| 200 | wc_Md5Update(&hmac->hash.md5, key, length);
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| 201 | wc_Md5Final(&hmac->hash.md5, ip);
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| 202 | length = MD5_DIGEST_SIZE;
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| 203 | }
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| 204 | }
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| 205 | break;
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| 206 | #endif
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| 207 |
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| 208 | #ifndef NO_SHA
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| 209 | case SHA:
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| 210 | {
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| 211 | hmac_block_size = SHA_BLOCK_SIZE;
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| 212 | if (length <= SHA_BLOCK_SIZE) {
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| 213 | XMEMCPY(ip, key, length);
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| 214 | }
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| 215 | else {
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| 216 | wc_ShaUpdate(&hmac->hash.sha, key, length);
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| 217 | wc_ShaFinal(&hmac->hash.sha, ip);
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| 218 | length = SHA_DIGEST_SIZE;
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| 219 | }
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| 220 | }
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| 221 | break;
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| 222 | #endif
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| 223 |
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| 224 | #ifndef NO_SHA256
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| 225 | case SHA256:
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| 226 | {
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| 227 | hmac_block_size = SHA256_BLOCK_SIZE;
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| 228 | if (length <= SHA256_BLOCK_SIZE) {
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| 229 | XMEMCPY(ip, key, length);
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| 230 | }
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| 231 | else {
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| 232 | ret = wc_Sha256Update(&hmac->hash.sha256, key, length);
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| 233 | if (ret != 0)
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| 234 | return ret;
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| 235 |
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| 236 | ret = wc_Sha256Final(&hmac->hash.sha256, ip);
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| 237 | if (ret != 0)
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| 238 | return ret;
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| 239 |
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| 240 | length = SHA256_DIGEST_SIZE;
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| 241 | }
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| 242 | }
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| 243 | break;
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| 244 | #endif
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| 245 |
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| 246 | #ifdef WOLFSSL_SHA384
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| 247 | case SHA384:
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| 248 | {
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| 249 | hmac_block_size = SHA384_BLOCK_SIZE;
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| 250 | if (length <= SHA384_BLOCK_SIZE) {
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| 251 | XMEMCPY(ip, key, length);
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| 252 | }
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| 253 | else {
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| 254 | ret = wc_Sha384Update(&hmac->hash.sha384, key, length);
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| 255 | if (ret != 0)
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| 256 | return ret;
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| 257 |
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| 258 | ret = wc_Sha384Final(&hmac->hash.sha384, ip);
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| 259 | if (ret != 0)
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| 260 | return ret;
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| 261 |
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| 262 | length = SHA384_DIGEST_SIZE;
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| 263 | }
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| 264 | }
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| 265 | break;
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| 266 | #endif
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| 267 |
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| 268 | #ifdef WOLFSSL_SHA512
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| 269 | case SHA512:
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| 270 | {
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| 271 | hmac_block_size = SHA512_BLOCK_SIZE;
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| 272 | if (length <= SHA512_BLOCK_SIZE) {
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| 273 | XMEMCPY(ip, key, length);
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| 274 | }
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| 275 | else {
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| 276 | ret = wc_Sha512Update(&hmac->hash.sha512, key, length);
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| 277 | if (ret != 0)
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| 278 | return ret;
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| 279 |
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| 280 | ret = wc_Sha512Final(&hmac->hash.sha512, ip);
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| 281 | if (ret != 0)
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| 282 | return ret;
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| 283 |
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| 284 | length = SHA512_DIGEST_SIZE;
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| 285 | }
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| 286 | }
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| 287 | break;
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| 288 | #endif
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| 289 |
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| 290 | #ifdef HAVE_BLAKE2
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| 291 | case BLAKE2B_ID:
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| 292 | {
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| 293 | hmac_block_size = BLAKE2B_BLOCKBYTES;
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| 294 | if (length <= BLAKE2B_BLOCKBYTES) {
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| 295 | XMEMCPY(ip, key, length);
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| 296 | }
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| 297 | else {
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| 298 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b, key, length);
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| 299 | if (ret != 0)
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| 300 | return ret;
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| 301 |
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| 302 | ret = wc_Blake2bFinal(&hmac->hash.blake2b, ip, BLAKE2B_256);
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| 303 | if (ret != 0)
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| 304 | return ret;
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| 305 |
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| 306 | length = BLAKE2B_256;
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| 307 | }
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| 308 | }
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| 309 | break;
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| 310 | #endif
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| 311 |
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| 312 | default:
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| 313 | return BAD_FUNC_ARG;
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| 314 | }
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| 315 | if (length < hmac_block_size)
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| 316 | XMEMSET(ip + length, 0, hmac_block_size - length);
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| 317 |
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| 318 | for(i = 0; i < hmac_block_size; i++) {
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| 319 | op[i] = ip[i] ^ OPAD;
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| 320 | ip[i] ^= IPAD;
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| 321 | }
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| 322 | return 0;
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| 323 | }
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| 324 |
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| 325 |
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| 326 | static int HmacKeyInnerHash(Hmac* hmac)
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| 327 | {
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| 328 | int ret = 0;
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| 329 |
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| 330 | switch (hmac->macType) {
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| 331 | #ifndef NO_MD5
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| 332 | case MD5:
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| 333 | wc_Md5Update(&hmac->hash.md5, (byte*) hmac->ipad, MD5_BLOCK_SIZE);
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| 334 | break;
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| 335 | #endif
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| 336 |
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| 337 | #ifndef NO_SHA
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| 338 | case SHA:
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| 339 | wc_ShaUpdate(&hmac->hash.sha, (byte*) hmac->ipad, SHA_BLOCK_SIZE);
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| 340 | break;
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| 341 | #endif
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| 342 |
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| 343 | #ifndef NO_SHA256
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| 344 | case SHA256:
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| 345 | ret = wc_Sha256Update(&hmac->hash.sha256,
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| 346 | (byte*) hmac->ipad, SHA256_BLOCK_SIZE);
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| 347 | if (ret != 0)
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| 348 | return ret;
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| 349 | break;
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| 350 | #endif
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| 351 |
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| 352 | #ifdef WOLFSSL_SHA384
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| 353 | case SHA384:
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| 354 | ret = wc_Sha384Update(&hmac->hash.sha384,
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| 355 | (byte*) hmac->ipad, SHA384_BLOCK_SIZE);
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| 356 | if (ret != 0)
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| 357 | return ret;
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| 358 | break;
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| 359 | #endif
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| 360 |
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| 361 | #ifdef WOLFSSL_SHA512
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| 362 | case SHA512:
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| 363 | ret = wc_Sha512Update(&hmac->hash.sha512,
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| 364 | (byte*) hmac->ipad, SHA512_BLOCK_SIZE);
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| 365 | if (ret != 0)
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| 366 | return ret;
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| 367 | break;
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| 368 | #endif
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| 369 |
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| 370 | #ifdef HAVE_BLAKE2
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| 371 | case BLAKE2B_ID:
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| 372 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b,
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| 373 | (byte*) hmac->ipad,BLAKE2B_BLOCKBYTES);
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| 374 | if (ret != 0)
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| 375 | return ret;
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| 376 | break;
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| 377 | #endif
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| 378 |
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| 379 | default:
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| 380 | break;
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| 381 | }
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| 382 |
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| 383 | hmac->innerHashKeyed = 1;
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| 384 |
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| 385 | return ret;
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| 386 | }
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| 387 |
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| 388 |
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| 389 | int wc_HmacUpdate(Hmac* hmac, const byte* msg, word32 length)
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| 390 | {
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| 391 | int ret;
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| 392 |
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| 393 | #ifdef HAVE_CAVIUM
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| 394 | if (hmac->magic == WOLFSSL_HMAC_CAVIUM_MAGIC)
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| 395 | return HmacCaviumUpdate(hmac, msg, length);
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| 396 | #endif
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| 397 |
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| 398 | if (!hmac->innerHashKeyed) {
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| 399 | ret = HmacKeyInnerHash(hmac);
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| 400 | if (ret != 0)
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| 401 | return ret;
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| 402 | }
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| 403 |
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| 404 | switch (hmac->macType) {
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| 405 | #ifndef NO_MD5
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| 406 | case MD5:
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| 407 | wc_Md5Update(&hmac->hash.md5, msg, length);
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| 408 | break;
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| 409 | #endif
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| 410 |
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| 411 | #ifndef NO_SHA
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| 412 | case SHA:
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| 413 | wc_ShaUpdate(&hmac->hash.sha, msg, length);
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| 414 | break;
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| 415 | #endif
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| 416 |
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| 417 | #ifndef NO_SHA256
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| 418 | case SHA256:
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| 419 | ret = wc_Sha256Update(&hmac->hash.sha256, msg, length);
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| 420 | if (ret != 0)
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| 421 | return ret;
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| 422 | break;
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| 423 | #endif
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| 424 |
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| 425 | #ifdef WOLFSSL_SHA384
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| 426 | case SHA384:
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| 427 | ret = wc_Sha384Update(&hmac->hash.sha384, msg, length);
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| 428 | if (ret != 0)
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| 429 | return ret;
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| 430 | break;
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| 431 | #endif
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| 432 |
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| 433 | #ifdef WOLFSSL_SHA512
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| 434 | case SHA512:
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| 435 | ret = wc_Sha512Update(&hmac->hash.sha512, msg, length);
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| 436 | if (ret != 0)
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| 437 | return ret;
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| 438 | break;
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| 439 | #endif
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| 440 |
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| 441 | #ifdef HAVE_BLAKE2
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| 442 | case BLAKE2B_ID:
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| 443 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b, msg, length);
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| 444 | if (ret != 0)
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| 445 | return ret;
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| 446 | break;
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| 447 | #endif
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| 448 |
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| 449 | default:
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| 450 | break;
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| 451 | }
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| 452 |
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| 453 | return 0;
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| 454 | }
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| 455 |
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| 456 |
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| 457 | int wc_HmacFinal(Hmac* hmac, byte* hash)
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| 458 | {
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| 459 | int ret;
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| 460 |
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| 461 | #ifdef HAVE_CAVIUM
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| 462 | if (hmac->magic == WOLFSSL_HMAC_CAVIUM_MAGIC)
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| 463 | return HmacCaviumFinal(hmac, hash);
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| 464 | #endif
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| 465 |
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| 466 | if (!hmac->innerHashKeyed) {
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| 467 | ret = HmacKeyInnerHash(hmac);
|
---|
| 468 | if (ret != 0)
|
---|
| 469 | return ret;
|
---|
| 470 | }
|
---|
| 471 |
|
---|
| 472 | switch (hmac->macType) {
|
---|
| 473 | #ifndef NO_MD5
|
---|
| 474 | case MD5:
|
---|
| 475 | {
|
---|
| 476 | wc_Md5Final(&hmac->hash.md5, (byte*) hmac->innerHash);
|
---|
| 477 |
|
---|
| 478 | wc_Md5Update(&hmac->hash.md5, (byte*) hmac->opad, MD5_BLOCK_SIZE);
|
---|
| 479 | wc_Md5Update(&hmac->hash.md5,
|
---|
| 480 | (byte*) hmac->innerHash, MD5_DIGEST_SIZE);
|
---|
| 481 |
|
---|
| 482 | wc_Md5Final(&hmac->hash.md5, hash);
|
---|
| 483 | }
|
---|
| 484 | break;
|
---|
| 485 | #endif
|
---|
| 486 |
|
---|
| 487 | #ifndef NO_SHA
|
---|
| 488 | case SHA:
|
---|
| 489 | {
|
---|
| 490 | wc_ShaFinal(&hmac->hash.sha, (byte*) hmac->innerHash);
|
---|
| 491 |
|
---|
| 492 | wc_ShaUpdate(&hmac->hash.sha, (byte*) hmac->opad, SHA_BLOCK_SIZE);
|
---|
| 493 | wc_ShaUpdate(&hmac->hash.sha,
|
---|
| 494 | (byte*) hmac->innerHash, SHA_DIGEST_SIZE);
|
---|
| 495 |
|
---|
| 496 | wc_ShaFinal(&hmac->hash.sha, hash);
|
---|
| 497 | }
|
---|
| 498 | break;
|
---|
| 499 | #endif
|
---|
| 500 |
|
---|
| 501 | #ifndef NO_SHA256
|
---|
| 502 | case SHA256:
|
---|
| 503 | {
|
---|
| 504 | ret = wc_Sha256Final(&hmac->hash.sha256, (byte*) hmac->innerHash);
|
---|
| 505 | if (ret != 0)
|
---|
| 506 | return ret;
|
---|
| 507 |
|
---|
| 508 | ret = wc_Sha256Update(&hmac->hash.sha256,
|
---|
| 509 | (byte*) hmac->opad, SHA256_BLOCK_SIZE);
|
---|
| 510 | if (ret != 0)
|
---|
| 511 | return ret;
|
---|
| 512 |
|
---|
| 513 | ret = wc_Sha256Update(&hmac->hash.sha256,
|
---|
| 514 | (byte*) hmac->innerHash, SHA256_DIGEST_SIZE);
|
---|
| 515 | if (ret != 0)
|
---|
| 516 | return ret;
|
---|
| 517 |
|
---|
| 518 | ret = wc_Sha256Final(&hmac->hash.sha256, hash);
|
---|
| 519 | if (ret != 0)
|
---|
| 520 | return ret;
|
---|
| 521 | }
|
---|
| 522 | break;
|
---|
| 523 | #endif
|
---|
| 524 |
|
---|
| 525 | #ifdef WOLFSSL_SHA384
|
---|
| 526 | case SHA384:
|
---|
| 527 | {
|
---|
| 528 | ret = wc_Sha384Final(&hmac->hash.sha384, (byte*) hmac->innerHash);
|
---|
| 529 | if (ret != 0)
|
---|
| 530 | return ret;
|
---|
| 531 |
|
---|
| 532 | ret = wc_Sha384Update(&hmac->hash.sha384,
|
---|
| 533 | (byte*) hmac->opad, SHA384_BLOCK_SIZE);
|
---|
| 534 | if (ret != 0)
|
---|
| 535 | return ret;
|
---|
| 536 |
|
---|
| 537 | ret = wc_Sha384Update(&hmac->hash.sha384,
|
---|
| 538 | (byte*) hmac->innerHash, SHA384_DIGEST_SIZE);
|
---|
| 539 | if (ret != 0)
|
---|
| 540 | return ret;
|
---|
| 541 |
|
---|
| 542 | ret = wc_Sha384Final(&hmac->hash.sha384, hash);
|
---|
| 543 | if (ret != 0)
|
---|
| 544 | return ret;
|
---|
| 545 | }
|
---|
| 546 | break;
|
---|
| 547 | #endif
|
---|
| 548 |
|
---|
| 549 | #ifdef WOLFSSL_SHA512
|
---|
| 550 | case SHA512:
|
---|
| 551 | {
|
---|
| 552 | ret = wc_Sha512Final(&hmac->hash.sha512, (byte*) hmac->innerHash);
|
---|
| 553 | if (ret != 0)
|
---|
| 554 | return ret;
|
---|
| 555 |
|
---|
| 556 | ret = wc_Sha512Update(&hmac->hash.sha512,
|
---|
| 557 | (byte*) hmac->opad, SHA512_BLOCK_SIZE);
|
---|
| 558 | if (ret != 0)
|
---|
| 559 | return ret;
|
---|
| 560 |
|
---|
| 561 | ret = wc_Sha512Update(&hmac->hash.sha512,
|
---|
| 562 | (byte*) hmac->innerHash, SHA512_DIGEST_SIZE);
|
---|
| 563 | if (ret != 0)
|
---|
| 564 | return ret;
|
---|
| 565 |
|
---|
| 566 | ret = wc_Sha512Final(&hmac->hash.sha512, hash);
|
---|
| 567 | if (ret != 0)
|
---|
| 568 | return ret;
|
---|
| 569 | }
|
---|
| 570 | break;
|
---|
| 571 | #endif
|
---|
| 572 |
|
---|
| 573 | #ifdef HAVE_BLAKE2
|
---|
| 574 | case BLAKE2B_ID:
|
---|
| 575 | {
|
---|
| 576 | ret = wc_Blake2bFinal(&hmac->hash.blake2b, (byte*) hmac->innerHash,
|
---|
| 577 | BLAKE2B_256);
|
---|
| 578 | if (ret != 0)
|
---|
| 579 | return ret;
|
---|
| 580 |
|
---|
| 581 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b,
|
---|
| 582 | (byte*) hmac->opad, BLAKE2B_BLOCKBYTES);
|
---|
| 583 | if (ret != 0)
|
---|
| 584 | return ret;
|
---|
| 585 |
|
---|
| 586 | ret = wc_Blake2bUpdate(&hmac->hash.blake2b,
|
---|
| 587 | (byte*) hmac->innerHash, BLAKE2B_256);
|
---|
| 588 | if (ret != 0)
|
---|
| 589 | return ret;
|
---|
| 590 |
|
---|
| 591 | ret = wc_Blake2bFinal(&hmac->hash.blake2b, hash, BLAKE2B_256);
|
---|
| 592 | if (ret != 0)
|
---|
| 593 | return ret;
|
---|
| 594 | }
|
---|
| 595 | break;
|
---|
| 596 | #endif
|
---|
| 597 |
|
---|
| 598 | default:
|
---|
| 599 | break;
|
---|
| 600 | }
|
---|
| 601 |
|
---|
| 602 | hmac->innerHashKeyed = 0;
|
---|
| 603 |
|
---|
| 604 | return 0;
|
---|
| 605 | }
|
---|
| 606 |
|
---|
| 607 |
|
---|
| 608 | #ifdef HAVE_CAVIUM
|
---|
| 609 |
|
---|
| 610 | /* Initiliaze Hmac for use with Nitrox device */
|
---|
| 611 | int wc_HmacInitCavium(Hmac* hmac, int devId)
|
---|
| 612 | {
|
---|
| 613 | if (hmac == NULL)
|
---|
| 614 | return -1;
|
---|
| 615 |
|
---|
| 616 | if (CspAllocContext(CONTEXT_SSL, &hmac->contextHandle, devId) != 0)
|
---|
| 617 | return -1;
|
---|
| 618 |
|
---|
| 619 | hmac->keyLen = 0;
|
---|
| 620 | hmac->dataLen = 0;
|
---|
| 621 | hmac->type = 0;
|
---|
| 622 | hmac->devId = devId;
|
---|
| 623 | hmac->magic = WOLFSSL_HMAC_CAVIUM_MAGIC;
|
---|
| 624 | hmac->data = NULL; /* buffered input data */
|
---|
| 625 |
|
---|
| 626 | hmac->innerHashKeyed = 0;
|
---|
| 627 |
|
---|
| 628 | return 0;
|
---|
| 629 | }
|
---|
| 630 |
|
---|
| 631 |
|
---|
| 632 | /* Free Hmac from use with Nitrox device */
|
---|
| 633 | void wc_HmacFreeCavium(Hmac* hmac)
|
---|
| 634 | {
|
---|
| 635 | if (hmac == NULL)
|
---|
| 636 | return;
|
---|
| 637 |
|
---|
| 638 | CspFreeContext(CONTEXT_SSL, hmac->contextHandle, hmac->devId);
|
---|
| 639 | hmac->magic = 0;
|
---|
| 640 | XFREE(hmac->data, NULL, DYNAMIC_TYPE_CAVIUM_TMP);
|
---|
| 641 | hmac->data = NULL;
|
---|
| 642 | }
|
---|
| 643 |
|
---|
| 644 |
|
---|
| 645 | static void HmacCaviumFinal(Hmac* hmac, byte* hash)
|
---|
| 646 | {
|
---|
| 647 | word32 requestId;
|
---|
| 648 |
|
---|
| 649 | if (CspHmac(CAVIUM_BLOCKING, hmac->type, NULL, hmac->keyLen,
|
---|
| 650 | (byte*)hmac->ipad, hmac->dataLen, hmac->data, hash, &requestId,
|
---|
| 651 | hmac->devId) != 0) {
|
---|
| 652 | WOLFSSL_MSG("Cavium Hmac failed");
|
---|
| 653 | }
|
---|
| 654 | hmac->innerHashKeyed = 0; /* tell update to start over if used again */
|
---|
| 655 | }
|
---|
| 656 |
|
---|
| 657 |
|
---|
| 658 | static void HmacCaviumUpdate(Hmac* hmac, const byte* msg, word32 length)
|
---|
| 659 | {
|
---|
| 660 | word16 add = (word16)length;
|
---|
| 661 | word32 total;
|
---|
| 662 | byte* tmp;
|
---|
| 663 |
|
---|
| 664 | if (length > WOLFSSL_MAX_16BIT) {
|
---|
| 665 | WOLFSSL_MSG("Too big msg for cavium hmac");
|
---|
| 666 | return;
|
---|
| 667 | }
|
---|
| 668 |
|
---|
| 669 | if (hmac->innerHashKeyed == 0) { /* starting new */
|
---|
| 670 | hmac->dataLen = 0;
|
---|
| 671 | hmac->innerHashKeyed = 1;
|
---|
| 672 | }
|
---|
| 673 |
|
---|
| 674 | total = add + hmac->dataLen;
|
---|
| 675 | if (total > WOLFSSL_MAX_16BIT) {
|
---|
| 676 | WOLFSSL_MSG("Too big msg for cavium hmac");
|
---|
| 677 | return;
|
---|
| 678 | }
|
---|
| 679 |
|
---|
| 680 | tmp = XMALLOC(hmac->dataLen + add, NULL,DYNAMIC_TYPE_CAVIUM_TMP);
|
---|
| 681 | if (tmp == NULL) {
|
---|
| 682 | WOLFSSL_MSG("Out of memory for cavium update");
|
---|
| 683 | return;
|
---|
| 684 | }
|
---|
| 685 | if (hmac->dataLen)
|
---|
| 686 | XMEMCPY(tmp, hmac->data, hmac->dataLen);
|
---|
| 687 | XMEMCPY(tmp + hmac->dataLen, msg, add);
|
---|
| 688 |
|
---|
| 689 | hmac->dataLen += add;
|
---|
| 690 | XFREE(hmac->data, NULL, DYNAMIC_TYPE_CAVIUM_TMP);
|
---|
| 691 | hmac->data = tmp;
|
---|
| 692 | }
|
---|
| 693 |
|
---|
| 694 |
|
---|
| 695 | static void HmacCaviumSetKey(Hmac* hmac, int type, const byte* key,
|
---|
| 696 | word32 length)
|
---|
| 697 | {
|
---|
| 698 | hmac->macType = (byte)type;
|
---|
| 699 | if (type == MD5)
|
---|
| 700 | hmac->type = MD5_TYPE;
|
---|
| 701 | else if (type == SHA)
|
---|
| 702 | hmac->type = SHA1_TYPE;
|
---|
| 703 | else if (type == SHA256)
|
---|
| 704 | hmac->type = SHA256_TYPE;
|
---|
| 705 | else {
|
---|
| 706 | WOLFSSL_MSG("unsupported cavium hmac type");
|
---|
| 707 | }
|
---|
| 708 |
|
---|
| 709 | hmac->innerHashKeyed = 0; /* should we key Startup flag */
|
---|
| 710 |
|
---|
| 711 | hmac->keyLen = (word16)length;
|
---|
| 712 | /* store key in ipad */
|
---|
| 713 | XMEMCPY(hmac->ipad, key, length);
|
---|
| 714 | }
|
---|
| 715 |
|
---|
| 716 | #endif /* HAVE_CAVIUM */
|
---|
| 717 |
|
---|
| 718 | int wolfSSL_GetHmacMaxSize(void)
|
---|
| 719 | {
|
---|
| 720 | return MAX_DIGEST_SIZE;
|
---|
| 721 | }
|
---|
| 722 |
|
---|
| 723 | #ifdef HAVE_HKDF
|
---|
| 724 |
|
---|
| 725 | #ifdef min
|
---|
| 726 | #define WOLFSSL_HAVE_MIN
|
---|
| 727 | #endif
|
---|
| 728 | #ifndef WOLFSSL_HAVE_MIN
|
---|
| 729 | #define WOLFSSL_HAVE_MIN
|
---|
| 730 |
|
---|
| 731 | static INLINE word32 min(word32 a, word32 b)
|
---|
| 732 | {
|
---|
| 733 | return a > b ? b : a;
|
---|
| 734 | }
|
---|
| 735 |
|
---|
| 736 | #endif /* WOLFSSL_HAVE_MIN */
|
---|
| 737 |
|
---|
| 738 |
|
---|
| 739 | static INLINE int GetHashSizeByType(int type)
|
---|
| 740 | {
|
---|
| 741 | if (!(type == MD5 || type == SHA || type == SHA256 || type == SHA384
|
---|
| 742 | || type == SHA512 || type == BLAKE2B_ID))
|
---|
| 743 | return BAD_FUNC_ARG;
|
---|
| 744 |
|
---|
| 745 | switch (type) {
|
---|
| 746 | #ifndef NO_MD5
|
---|
| 747 | case MD5:
|
---|
| 748 | return MD5_DIGEST_SIZE;
|
---|
| 749 | #endif
|
---|
| 750 |
|
---|
| 751 | #ifndef NO_SHA
|
---|
| 752 | case SHA:
|
---|
| 753 | return SHA_DIGEST_SIZE;
|
---|
| 754 | #endif
|
---|
| 755 |
|
---|
| 756 | #ifndef NO_SHA256
|
---|
| 757 | case SHA256:
|
---|
| 758 | return SHA256_DIGEST_SIZE;
|
---|
| 759 | #endif
|
---|
| 760 |
|
---|
| 761 | #ifdef WOLFSSL_SHA384
|
---|
| 762 | case SHA384:
|
---|
| 763 | return SHA384_DIGEST_SIZE;
|
---|
| 764 | #endif
|
---|
| 765 |
|
---|
| 766 | #ifdef WOLFSSL_SHA512
|
---|
| 767 | case SHA512:
|
---|
| 768 | return SHA512_DIGEST_SIZE;
|
---|
| 769 | #endif
|
---|
| 770 |
|
---|
| 771 | #ifdef HAVE_BLAKE2
|
---|
| 772 | case BLAKE2B_ID:
|
---|
| 773 | return BLAKE2B_OUTBYTES;
|
---|
| 774 | #endif
|
---|
| 775 |
|
---|
| 776 | default:
|
---|
| 777 | return BAD_FUNC_ARG;
|
---|
| 778 | }
|
---|
| 779 | }
|
---|
| 780 |
|
---|
| 781 |
|
---|
| 782 | /* HMAC-KDF with hash type, optional salt and info, return 0 on success */
|
---|
| 783 | int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
|
---|
| 784 | const byte* salt, word32 saltSz,
|
---|
| 785 | const byte* info, word32 infoSz,
|
---|
| 786 | byte* out, word32 outSz)
|
---|
| 787 | {
|
---|
| 788 | Hmac myHmac;
|
---|
| 789 | #ifdef WOLFSSL_SMALL_STACK
|
---|
| 790 | byte* tmp;
|
---|
| 791 | byte* prk;
|
---|
| 792 | #else
|
---|
| 793 | byte tmp[MAX_DIGEST_SIZE]; /* localSalt helper and T */
|
---|
| 794 | byte prk[MAX_DIGEST_SIZE];
|
---|
| 795 | #endif
|
---|
| 796 | const byte* localSalt; /* either points to user input or tmp */
|
---|
| 797 | int hashSz = GetHashSizeByType(type);
|
---|
| 798 | word32 outIdx = 0;
|
---|
| 799 | byte n = 0x1;
|
---|
| 800 | int ret;
|
---|
| 801 |
|
---|
| 802 | if (hashSz < 0)
|
---|
| 803 | return BAD_FUNC_ARG;
|
---|
| 804 |
|
---|
| 805 | #ifdef WOLFSSL_SMALL_STACK
|
---|
| 806 | tmp = (byte*)XMALLOC(MAX_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 807 | if (tmp == NULL)
|
---|
| 808 | return MEMORY_E;
|
---|
| 809 |
|
---|
| 810 | prk = (byte*)XMALLOC(MAX_DIGEST_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 811 | if (prk == NULL) {
|
---|
| 812 | XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 813 | return MEMORY_E;
|
---|
| 814 | }
|
---|
| 815 | #endif
|
---|
| 816 |
|
---|
| 817 | localSalt = salt;
|
---|
| 818 | if (localSalt == NULL) {
|
---|
| 819 | XMEMSET(tmp, 0, hashSz);
|
---|
| 820 | localSalt = tmp;
|
---|
| 821 | saltSz = hashSz;
|
---|
| 822 | }
|
---|
| 823 |
|
---|
| 824 | do {
|
---|
| 825 | ret = wc_HmacSetKey(&myHmac, type, localSalt, saltSz);
|
---|
| 826 | if (ret != 0)
|
---|
| 827 | break;
|
---|
| 828 | ret = wc_HmacUpdate(&myHmac, inKey, inKeySz);
|
---|
| 829 | if (ret != 0)
|
---|
| 830 | break;
|
---|
| 831 | ret = wc_HmacFinal(&myHmac, prk);
|
---|
| 832 | } while (0);
|
---|
| 833 |
|
---|
| 834 | if (ret == 0) {
|
---|
| 835 | while (outIdx < outSz) {
|
---|
| 836 | int tmpSz = (n == 1) ? 0 : hashSz;
|
---|
| 837 | word32 left = outSz - outIdx;
|
---|
| 838 |
|
---|
| 839 | ret = wc_HmacSetKey(&myHmac, type, prk, hashSz);
|
---|
| 840 | if (ret != 0)
|
---|
| 841 | break;
|
---|
| 842 | ret = wc_HmacUpdate(&myHmac, tmp, tmpSz);
|
---|
| 843 | if (ret != 0)
|
---|
| 844 | break;
|
---|
| 845 | ret = wc_HmacUpdate(&myHmac, info, infoSz);
|
---|
| 846 | if (ret != 0)
|
---|
| 847 | break;
|
---|
| 848 | ret = wc_HmacUpdate(&myHmac, &n, 1);
|
---|
| 849 | if (ret != 0)
|
---|
| 850 | break;
|
---|
| 851 | ret = wc_HmacFinal(&myHmac, tmp);
|
---|
| 852 | if (ret != 0)
|
---|
| 853 | break;
|
---|
| 854 |
|
---|
| 855 | left = min(left, (word32)hashSz);
|
---|
| 856 | XMEMCPY(out+outIdx, tmp, left);
|
---|
| 857 |
|
---|
| 858 | outIdx += hashSz;
|
---|
| 859 | n++;
|
---|
| 860 | }
|
---|
| 861 | }
|
---|
| 862 |
|
---|
| 863 | #ifdef WOLFSSL_SMALL_STACK
|
---|
| 864 | XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 865 | XFREE(prk, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
---|
| 866 | #endif
|
---|
| 867 |
|
---|
| 868 | return ret;
|
---|
| 869 | }
|
---|
| 870 |
|
---|
| 871 | #endif /* HAVE_HKDF */
|
---|
| 872 |
|
---|
| 873 | #endif /* HAVE_FIPS */
|
---|
| 874 | #endif /* NO_HMAC */
|
---|