diff options
Diffstat (limited to 'wolfcrypt/src/hmac.c')
| -rw-r--r-- | wolfcrypt/src/hmac.c | 1290 |
1 files changed, 1290 insertions, 0 deletions
diff --git a/wolfcrypt/src/hmac.c b/wolfcrypt/src/hmac.c new file mode 100644 index 0000000..bcebc1c --- /dev/null +++ b/wolfcrypt/src/hmac.c @@ -0,0 +1,1290 @@ +/* hmac.c + * + * Copyright (C) 2006-2020 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 + */ + + +#ifdef HAVE_CONFIG_H + #include <config.h> +#endif + +#include <wolfssl/wolfcrypt/settings.h> +#include <wolfssl/wolfcrypt/error-crypt.h> + +#ifndef NO_HMAC + +#if defined(HAVE_FIPS) && \ + defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2) + + /* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */ + #define FIPS_NO_WRAPPERS + + #ifdef USE_WINDOWS_API + #pragma code_seg(".fipsA$b") + #pragma const_seg(".fipsB$b") + #endif +#endif + +#include <wolfssl/wolfcrypt/hmac.h> + +#ifdef WOLF_CRYPTO_CB + #include <wolfssl/wolfcrypt/cryptocb.h> +#endif + +#ifdef NO_INLINE + #include <wolfssl/wolfcrypt/misc.h> +#else + #define WOLFSSL_MISC_INCLUDED + #include <wolfcrypt/src/misc.c> +#endif + + +/* fips wrapper calls, user can call direct */ +/* If building for old FIPS. */ +#if defined(HAVE_FIPS) && \ + (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2)) + + /* does init */ + int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 keySz) + { + if (hmac == NULL || (key == NULL && keySz != 0) || + !(type == WC_MD5 || type == WC_SHA || type == WC_SHA256 || + type == WC_SHA384 || type == WC_SHA512)) { + return BAD_FUNC_ARG; + } + + return HmacSetKey_fips(hmac, type, key, keySz); + } + int wc_HmacUpdate(Hmac* hmac, const byte* in, word32 sz) + { + if (hmac == NULL || (in == NULL && sz > 0)) { + return BAD_FUNC_ARG; + } + + return HmacUpdate_fips(hmac, in, sz); + } + int wc_HmacFinal(Hmac* hmac, byte* out) + { + if (hmac == NULL) { + return BAD_FUNC_ARG; + } + + return HmacFinal_fips(hmac, out); + } + int wolfSSL_GetHmacMaxSize(void) + { + return CyaSSL_GetHmacMaxSize(); + } + + int wc_HmacInit(Hmac* hmac, void* heap, int devId) + { + (void)hmac; + (void)heap; + (void)devId; + /* FIPS doesn't support: + return HmacInit(hmac, heap, devId); */ + return 0; + } + void wc_HmacFree(Hmac* hmac) + { + (void)hmac; + /* FIPS doesn't support: + HmacFree(hmac); */ + } + + #ifdef HAVE_HKDF + int wc_HKDF(int type, const byte* inKey, word32 inKeySz, + const byte* salt, word32 saltSz, + const byte* info, word32 infoSz, + byte* out, word32 outSz) + { + return HKDF(type, inKey, inKeySz, salt, saltSz, + info, infoSz, out, outSz); + } + #endif /* HAVE_HKDF */ + +#else /* else build without fips, or for new fips */ + + +int wc_HmacSizeByType(int type) +{ + int ret; + + if (!(type == WC_MD5 || type == WC_SHA || + type == WC_SHA224 || type == WC_SHA256 || + type == WC_SHA384 || type == WC_SHA512 || + type == WC_SHA3_224 || type == WC_SHA3_256 || + type == WC_SHA3_384 || type == WC_SHA3_512)) { + return BAD_FUNC_ARG; + } + + switch (type) { + #ifndef NO_MD5 + case WC_MD5: + ret = WC_MD5_DIGEST_SIZE; + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + ret = WC_SHA_DIGEST_SIZE; + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + ret = WC_SHA224_DIGEST_SIZE; + break; + #endif /* WOLFSSL_SHA224 */ + + #ifndef NO_SHA256 + case WC_SHA256: + ret = WC_SHA256_DIGEST_SIZE; + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + ret = WC_SHA384_DIGEST_SIZE; + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + ret = WC_SHA512_DIGEST_SIZE; + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + case WC_SHA3_224: + ret = WC_SHA3_224_DIGEST_SIZE; + break; + + case WC_SHA3_256: + ret = WC_SHA3_256_DIGEST_SIZE; + break; + + case WC_SHA3_384: + ret = WC_SHA3_384_DIGEST_SIZE; + break; + + case WC_SHA3_512: + ret = WC_SHA3_512_DIGEST_SIZE; + break; + + #endif + + default: + ret = BAD_FUNC_ARG; + break; + } + + return ret; +} + +int _InitHmac(Hmac* hmac, int type, void* heap) +{ + int ret = 0; + + switch (type) { + #ifndef NO_MD5 + case WC_MD5: + ret = wc_InitMd5(&hmac->hash.md5); + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + ret = wc_InitSha(&hmac->hash.sha); + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + ret = wc_InitSha224(&hmac->hash.sha224); + break; + #endif /* WOLFSSL_SHA224 */ + + #ifndef NO_SHA256 + case WC_SHA256: + ret = wc_InitSha256(&hmac->hash.sha256); + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + ret = wc_InitSha384(&hmac->hash.sha384); + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + ret = wc_InitSha512(&hmac->hash.sha512); + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + #ifndef WOLFSSL_NOSHA3_224 + case WC_SHA3_224: + ret = wc_InitSha3_224(&hmac->hash.sha3, heap, INVALID_DEVID); + break; + #endif + #ifndef WOLFSSL_NOSHA3_256 + case WC_SHA3_256: + ret = wc_InitSha3_256(&hmac->hash.sha3, heap, INVALID_DEVID); + break; + #endif + #ifndef WOLFSSL_NOSHA3_384 + case WC_SHA3_384: + ret = wc_InitSha3_384(&hmac->hash.sha3, heap, INVALID_DEVID); + break; + #endif + #ifndef WOLFSSL_NOSHA3_512 + case WC_SHA3_512: + ret = wc_InitSha3_512(&hmac->hash.sha3, heap, INVALID_DEVID); + break; + #endif + #endif + + default: + ret = BAD_FUNC_ARG; + break; + } + + /* default to NULL heap hint or test value */ +#ifdef WOLFSSL_HEAP_TEST + hmac->heap = (void)WOLFSSL_HEAP_TEST; +#else + hmac->heap = heap; +#endif /* WOLFSSL_HEAP_TEST */ + + return ret; +} + + +int wc_HmacSetKey(Hmac* hmac, int type, const byte* key, word32 length) +{ + byte* ip; + byte* op; + word32 i, hmac_block_size = 0; + int ret = 0; + void* heap = NULL; + + if (hmac == NULL || (key == NULL && length != 0) || + !(type == WC_MD5 || type == WC_SHA || + type == WC_SHA224 || type == WC_SHA256 || + type == WC_SHA384 || type == WC_SHA512 || + type == WC_SHA3_224 || type == WC_SHA3_256 || + type == WC_SHA3_384 || type == WC_SHA3_512)) { + return BAD_FUNC_ARG; + } + +#ifndef HAVE_FIPS + /* if set key has already been run then make sure and free existing */ + /* This is for async and PIC32MZ situations, and just normally OK, + provided the user calls wc_HmacInit() first. That function is not + available in FIPS builds. In current FIPS builds, the hashes are + not allocating resources. */ + if (hmac->macType != WC_HASH_TYPE_NONE) { + wc_HmacFree(hmac); + } +#endif + + hmac->innerHashKeyed = 0; + hmac->macType = (byte)type; + + ret = _InitHmac(hmac, type, heap); + if (ret != 0) + return ret; + +#ifdef HAVE_FIPS + if (length < HMAC_FIPS_MIN_KEY) + return HMAC_MIN_KEYLEN_E; +#endif + +#ifdef WOLF_CRYPTO_CB + hmac->keyRaw = key; /* use buffer directly */ + hmac->keyLen = length; +#endif + + ip = (byte*)hmac->ipad; + op = (byte*)hmac->opad; + + switch (hmac->macType) { + #ifndef NO_MD5 + case WC_MD5: + hmac_block_size = WC_MD5_BLOCK_SIZE; + if (length <= WC_MD5_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Md5Update(&hmac->hash.md5, key, length); + if (ret != 0) + break; + ret = wc_Md5Final(&hmac->hash.md5, ip); + if (ret != 0) + break; + length = WC_MD5_DIGEST_SIZE; + } + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + hmac_block_size = WC_SHA_BLOCK_SIZE; + if (length <= WC_SHA_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_ShaUpdate(&hmac->hash.sha, key, length); + if (ret != 0) + break; + ret = wc_ShaFinal(&hmac->hash.sha, ip); + if (ret != 0) + break; + + length = WC_SHA_DIGEST_SIZE; + } + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + hmac_block_size = WC_SHA224_BLOCK_SIZE; + if (length <= WC_SHA224_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha224Update(&hmac->hash.sha224, key, length); + if (ret != 0) + break; + ret = wc_Sha224Final(&hmac->hash.sha224, ip); + if (ret != 0) + break; + + length = WC_SHA224_DIGEST_SIZE; + } + break; + #endif /* WOLFSSL_SHA224 */ + #ifndef NO_SHA256 + case WC_SHA256: + hmac_block_size = WC_SHA256_BLOCK_SIZE; + if (length <= WC_SHA256_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha256Update(&hmac->hash.sha256, key, length); + if (ret != 0) + break; + ret = wc_Sha256Final(&hmac->hash.sha256, ip); + if (ret != 0) + break; + + length = WC_SHA256_DIGEST_SIZE; + } + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + hmac_block_size = WC_SHA384_BLOCK_SIZE; + if (length <= WC_SHA384_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha384Update(&hmac->hash.sha384, key, length); + if (ret != 0) + break; + ret = wc_Sha384Final(&hmac->hash.sha384, ip); + if (ret != 0) + break; + + length = WC_SHA384_DIGEST_SIZE; + } + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + hmac_block_size = WC_SHA512_BLOCK_SIZE; + if (length <= WC_SHA512_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha512Update(&hmac->hash.sha512, key, length); + if (ret != 0) + break; + ret = wc_Sha512Final(&hmac->hash.sha512, ip); + if (ret != 0) + break; + + length = WC_SHA512_DIGEST_SIZE; + } + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + #ifndef WOLFSSL_NOSHA3_224 + case WC_SHA3_224: + hmac_block_size = WC_SHA3_224_BLOCK_SIZE; + if (length <= WC_SHA3_224_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha3_224_Update(&hmac->hash.sha3, key, length); + if (ret != 0) + break; + ret = wc_Sha3_224_Final(&hmac->hash.sha3, ip); + if (ret != 0) + break; + + length = WC_SHA3_224_DIGEST_SIZE; + } + break; + #endif + #ifndef WOLFSSL_NOSHA3_256 + case WC_SHA3_256: + hmac_block_size = WC_SHA3_256_BLOCK_SIZE; + if (length <= WC_SHA3_256_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha3_256_Update(&hmac->hash.sha3, key, length); + if (ret != 0) + break; + ret = wc_Sha3_256_Final(&hmac->hash.sha3, ip); + if (ret != 0) + break; + + length = WC_SHA3_256_DIGEST_SIZE; + } + break; + #endif + #ifndef WOLFSSL_NOSHA3_384 + case WC_SHA3_384: + hmac_block_size = WC_SHA3_384_BLOCK_SIZE; + if (length <= WC_SHA3_384_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha3_384_Update(&hmac->hash.sha3, key, length); + if (ret != 0) + break; + ret = wc_Sha3_384_Final(&hmac->hash.sha3, ip); + if (ret != 0) + break; + + length = WC_SHA3_384_DIGEST_SIZE; + } + break; + #endif + #ifndef WOLFSSL_NOSHA3_512 + case WC_SHA3_512: + hmac_block_size = WC_SHA3_512_BLOCK_SIZE; + if (length <= WC_SHA3_512_BLOCK_SIZE) { + if (key != NULL) { + XMEMCPY(ip, key, length); + } + } + else { + ret = wc_Sha3_512_Update(&hmac->hash.sha3, key, length); + if (ret != 0) + break; + ret = wc_Sha3_512_Final(&hmac->hash.sha3, ip); + if (ret != 0) + break; + + length = WC_SHA3_512_DIGEST_SIZE; + } + break; + #endif + #endif /* WOLFSSL_SHA3 */ + + default: + return BAD_FUNC_ARG; + } + +#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_HMAC) + if (hmac->asyncDev.marker == WOLFSSL_ASYNC_MARKER_HMAC) { + #if defined(HAVE_INTEL_QA) || defined(HAVE_CAVIUM) + #ifdef HAVE_INTEL_QA + if (IntelQaHmacGetType(hmac->macType, NULL) == 0) + #endif + { + if (length > hmac_block_size) + length = hmac_block_size; + /* update key length */ + hmac->keyLen = (word16)length; + + return ret; + } + /* no need to pad below */ + #endif + } +#endif + + if (ret == 0) { + if (length < hmac_block_size) + XMEMSET(ip + length, 0, hmac_block_size - length); + + for(i = 0; i < hmac_block_size; i++) { + op[i] = ip[i] ^ OPAD; + ip[i] ^= IPAD; + } + } + + return ret; +} + + +static int HmacKeyInnerHash(Hmac* hmac) +{ + int ret = 0; + + switch (hmac->macType) { + #ifndef NO_MD5 + case WC_MD5: + ret = wc_Md5Update(&hmac->hash.md5, (byte*)hmac->ipad, + WC_MD5_BLOCK_SIZE); + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + ret = wc_ShaUpdate(&hmac->hash.sha, (byte*)hmac->ipad, + WC_SHA_BLOCK_SIZE); + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + ret = wc_Sha224Update(&hmac->hash.sha224, (byte*)hmac->ipad, + WC_SHA224_BLOCK_SIZE); + break; + #endif /* WOLFSSL_SHA224 */ + #ifndef NO_SHA256 + case WC_SHA256: + ret = wc_Sha256Update(&hmac->hash.sha256, (byte*)hmac->ipad, + WC_SHA256_BLOCK_SIZE); + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + ret = wc_Sha384Update(&hmac->hash.sha384, (byte*)hmac->ipad, + WC_SHA384_BLOCK_SIZE); + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + ret = wc_Sha512Update(&hmac->hash.sha512, (byte*)hmac->ipad, + WC_SHA512_BLOCK_SIZE); + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + #ifndef WOLFSSL_NOSHA3_224 + case WC_SHA3_224: + ret = wc_Sha3_224_Update(&hmac->hash.sha3, (byte*)hmac->ipad, + WC_SHA3_224_BLOCK_SIZE); + break; + #endif + #ifndef WOLFSSL_NOSHA3_256 + case WC_SHA3_256: + ret = wc_Sha3_256_Update(&hmac->hash.sha3, (byte*)hmac->ipad, + WC_SHA3_256_BLOCK_SIZE); + break; + #endif + #ifndef WOLFSSL_NOSHA3_384 + case WC_SHA3_384: + ret = wc_Sha3_384_Update(&hmac->hash.sha3, (byte*)hmac->ipad, + WC_SHA3_384_BLOCK_SIZE); + break; + #endif + #ifndef WOLFSSL_NOSHA3_512 + case WC_SHA3_512: + ret = wc_Sha3_512_Update(&hmac->hash.sha3, (byte*)hmac->ipad, + WC_SHA3_512_BLOCK_SIZE); + break; + #endif + #endif /* WOLFSSL_SHA3 */ + + default: + break; + } + + if (ret == 0) + hmac->innerHashKeyed = WC_HMAC_INNER_HASH_KEYED_SW; + + return ret; +} + + +int wc_HmacUpdate(Hmac* hmac, const byte* msg, word32 length) +{ + int ret = 0; + + if (hmac == NULL || (msg == NULL && length > 0)) { + return BAD_FUNC_ARG; + } + +#ifdef WOLF_CRYPTO_CB + if (hmac->devId != INVALID_DEVID) { + ret = wc_CryptoCb_Hmac(hmac, hmac->macType, msg, length, NULL); + if (ret != CRYPTOCB_UNAVAILABLE) + return ret; + /* fall-through when unavailable */ + ret = 0; /* reset error code */ + } +#endif +#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_HMAC) + if (hmac->asyncDev.marker == WOLFSSL_ASYNC_MARKER_HMAC) { + #if defined(HAVE_CAVIUM) + return NitroxHmacUpdate(hmac, msg, length); + #elif defined(HAVE_INTEL_QA) + if (IntelQaHmacGetType(hmac->macType, NULL) == 0) { + return IntelQaHmac(&hmac->asyncDev, hmac->macType, + (byte*)hmac->ipad, hmac->keyLen, NULL, msg, length); + } + #endif + } +#endif /* WOLFSSL_ASYNC_CRYPT */ + + if (!hmac->innerHashKeyed) { + ret = HmacKeyInnerHash(hmac); + if (ret != 0) + return ret; + } + + switch (hmac->macType) { + #ifndef NO_MD5 + case WC_MD5: + ret = wc_Md5Update(&hmac->hash.md5, msg, length); + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + ret = wc_ShaUpdate(&hmac->hash.sha, msg, length); + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + ret = wc_Sha224Update(&hmac->hash.sha224, msg, length); + break; + #endif /* WOLFSSL_SHA224 */ + + #ifndef NO_SHA256 + case WC_SHA256: + ret = wc_Sha256Update(&hmac->hash.sha256, msg, length); + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + ret = wc_Sha384Update(&hmac->hash.sha384, msg, length); + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + ret = wc_Sha512Update(&hmac->hash.sha512, msg, length); + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + #ifndef WOLFSSL_NOSHA3_224 + case WC_SHA3_224: + ret = wc_Sha3_224_Update(&hmac->hash.sha3, msg, length); + break; + #endif + #ifndef WOLFSSL_NOSHA3_256 + case WC_SHA3_256: + ret = wc_Sha3_256_Update(&hmac->hash.sha3, msg, length); + break; + #endif + #ifndef WOLFSSL_NOSHA3_384 + case WC_SHA3_384: + ret = wc_Sha3_384_Update(&hmac->hash.sha3, msg, length); + break; + #endif + #ifndef WOLFSSL_NOSHA3_512 + case WC_SHA3_512: + ret = wc_Sha3_512_Update(&hmac->hash.sha3, msg, length); + break; + #endif + #endif /* WOLFSSL_SHA3 */ + + default: + break; + } + + return ret; +} + + +int wc_HmacFinal(Hmac* hmac, byte* hash) +{ + int ret; + + if (hmac == NULL || hash == NULL) { + return BAD_FUNC_ARG; + } + +#ifdef WOLF_CRYPTO_CB + if (hmac->devId != INVALID_DEVID) { + ret = wc_CryptoCb_Hmac(hmac, hmac->macType, NULL, 0, hash); + if (ret != CRYPTOCB_UNAVAILABLE) + return ret; + /* fall-through when unavailable */ + } +#endif +#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_HMAC) + if (hmac->asyncDev.marker == WOLFSSL_ASYNC_MARKER_HMAC) { + int hashLen = wc_HmacSizeByType(hmac->macType); + if (hashLen <= 0) + return hashLen; + + #if defined(HAVE_CAVIUM) + return NitroxHmacFinal(hmac, hash, hashLen); + #elif defined(HAVE_INTEL_QA) + if (IntelQaHmacGetType(hmac->macType, NULL) == 0) { + return IntelQaHmac(&hmac->asyncDev, hmac->macType, + (byte*)hmac->ipad, hmac->keyLen, hash, NULL, hashLen); + } + #endif + } +#endif /* WOLFSSL_ASYNC_CRYPT */ + + if (!hmac->innerHashKeyed) { + ret = HmacKeyInnerHash(hmac); + if (ret != 0) + return ret; + } + + switch (hmac->macType) { + #ifndef NO_MD5 + case WC_MD5: + ret = wc_Md5Final(&hmac->hash.md5, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Md5Update(&hmac->hash.md5, (byte*)hmac->opad, + WC_MD5_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Md5Update(&hmac->hash.md5, (byte*)hmac->innerHash, + WC_MD5_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Md5Final(&hmac->hash.md5, hash); + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + ret = wc_ShaFinal(&hmac->hash.sha, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_ShaUpdate(&hmac->hash.sha, (byte*)hmac->opad, + WC_SHA_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_ShaUpdate(&hmac->hash.sha, (byte*)hmac->innerHash, + WC_SHA_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_ShaFinal(&hmac->hash.sha, hash); + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + ret = wc_Sha224Final(&hmac->hash.sha224, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha224Update(&hmac->hash.sha224, (byte*)hmac->opad, + WC_SHA224_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha224Update(&hmac->hash.sha224, (byte*)hmac->innerHash, + WC_SHA224_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha224Final(&hmac->hash.sha224, hash); + if (ret != 0) + break; + break; + #endif /* WOLFSSL_SHA224 */ + #ifndef NO_SHA256 + case WC_SHA256: + ret = wc_Sha256Final(&hmac->hash.sha256, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha256Update(&hmac->hash.sha256, (byte*)hmac->opad, + WC_SHA256_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha256Update(&hmac->hash.sha256, (byte*)hmac->innerHash, + WC_SHA256_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha256Final(&hmac->hash.sha256, hash); + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + ret = wc_Sha384Final(&hmac->hash.sha384, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha384Update(&hmac->hash.sha384, (byte*)hmac->opad, + WC_SHA384_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha384Update(&hmac->hash.sha384, (byte*)hmac->innerHash, + WC_SHA384_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha384Final(&hmac->hash.sha384, hash); + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + ret = wc_Sha512Final(&hmac->hash.sha512, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha512Update(&hmac->hash.sha512, (byte*)hmac->opad, + WC_SHA512_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha512Update(&hmac->hash.sha512, (byte*)hmac->innerHash, + WC_SHA512_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha512Final(&hmac->hash.sha512, hash); + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + #ifndef WOLFSSL_NOSHA3_224 + case WC_SHA3_224: + ret = wc_Sha3_224_Final(&hmac->hash.sha3, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha3_224_Update(&hmac->hash.sha3, (byte*)hmac->opad, + WC_SHA3_224_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_224_Update(&hmac->hash.sha3, (byte*)hmac->innerHash, + WC_SHA3_224_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_224_Final(&hmac->hash.sha3, hash); + break; + #endif + #ifndef WOLFSSL_NOSHA3_256 + case WC_SHA3_256: + ret = wc_Sha3_256_Final(&hmac->hash.sha3, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha3_256_Update(&hmac->hash.sha3, (byte*)hmac->opad, + WC_SHA3_256_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_256_Update(&hmac->hash.sha3, (byte*)hmac->innerHash, + WC_SHA3_256_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_256_Final(&hmac->hash.sha3, hash); + break; + #endif + #ifndef WOLFSSL_NOSHA3_384 + case WC_SHA3_384: + ret = wc_Sha3_384_Final(&hmac->hash.sha3, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha3_384_Update(&hmac->hash.sha3, (byte*)hmac->opad, + WC_SHA3_384_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_384_Update(&hmac->hash.sha3, (byte*)hmac->innerHash, + WC_SHA3_384_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_384_Final(&hmac->hash.sha3, hash); + break; + #endif + #ifndef WOLFSSL_NOSHA3_512 + case WC_SHA3_512: + ret = wc_Sha3_512_Final(&hmac->hash.sha3, (byte*)hmac->innerHash); + if (ret != 0) + break; + ret = wc_Sha3_512_Update(&hmac->hash.sha3, (byte*)hmac->opad, + WC_SHA3_512_BLOCK_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_512_Update(&hmac->hash.sha3, (byte*)hmac->innerHash, + WC_SHA3_512_DIGEST_SIZE); + if (ret != 0) + break; + ret = wc_Sha3_512_Final(&hmac->hash.sha3, hash); + break; + #endif + #endif /* WOLFSSL_SHA3 */ + + default: + ret = BAD_FUNC_ARG; + break; + } + + if (ret == 0) { + hmac->innerHashKeyed = 0; + } + + return ret; +} + + +/* Initialize Hmac for use with async device */ +int wc_HmacInit(Hmac* hmac, void* heap, int devId) +{ + int ret = 0; + + if (hmac == NULL) + return BAD_FUNC_ARG; + + XMEMSET(hmac, 0, sizeof(Hmac)); + hmac->macType = WC_HASH_TYPE_NONE; + hmac->heap = heap; +#ifdef WOLF_CRYPTO_CB + hmac->devId = devId; + hmac->devCtx = NULL; +#endif + +#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_HMAC) + ret = wolfAsync_DevCtxInit(&hmac->asyncDev, WOLFSSL_ASYNC_MARKER_HMAC, + hmac->heap, devId); +#else + (void)devId; +#endif /* WOLFSSL_ASYNC_CRYPT */ + + return ret; +} + +#ifdef HAVE_PKCS11 +int wc_HmacInit_Id(Hmac* hmac, unsigned char* id, int len, void* heap, + int devId) +{ + int ret = 0; + + if (hmac == NULL) + ret = BAD_FUNC_ARG; + if (ret == 0 && (len < 0 || len > HMAC_MAX_ID_LEN)) + ret = BUFFER_E; + + if (ret == 0) + ret = wc_HmacInit(hmac, heap, devId); + if (ret == 0) { + XMEMCPY(hmac->id, id, len); + hmac->idLen = len; + } + + return ret; +} +#endif + +/* Free Hmac from use with async device */ +void wc_HmacFree(Hmac* hmac) +{ + if (hmac == NULL) + return; + +#ifdef WOLF_CRYPTO_CB + /* handle cleanup case where final is not called */ + if (hmac->devId != INVALID_DEVID && hmac->devCtx != NULL) { + int ret; + byte finalHash[WC_HMAC_BLOCK_SIZE]; + ret = wc_CryptoCb_Hmac(hmac, hmac->macType, NULL, 0, finalHash); + (void)ret; /* must ignore return code here */ + (void)finalHash; + } +#endif + + switch (hmac->macType) { + #ifndef NO_MD5 + case WC_MD5: + wc_Md5Free(&hmac->hash.md5); + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + wc_ShaFree(&hmac->hash.sha); + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + wc_Sha224Free(&hmac->hash.sha224); + break; + #endif /* WOLFSSL_SHA224 */ + #ifndef NO_SHA256 + case WC_SHA256: + wc_Sha256Free(&hmac->hash.sha256); + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + wc_Sha384Free(&hmac->hash.sha384); + break; + #endif /* WOLFSSL_SHA384 */ + #ifdef WOLFSSL_SHA512 + case WC_SHA512: + wc_Sha512Free(&hmac->hash.sha512); + break; + #endif /* WOLFSSL_SHA512 */ + + #ifdef WOLFSSL_SHA3 + #ifndef WOLFSSL_NOSHA3_224 + case WC_SHA3_224: + wc_Sha3_224_Free(&hmac->hash.sha3); + break; + #endif + #ifndef WOLFSSL_NOSHA3_256 + case WC_SHA3_256: + wc_Sha3_256_Free(&hmac->hash.sha3); + break; + #endif + #ifndef WOLFSSL_NOSHA3_384 + case WC_SHA3_384: + wc_Sha3_384_Free(&hmac->hash.sha3); + break; + #endif + #ifndef WOLFSSL_NOSHA3_512 + case WC_SHA3_512: + wc_Sha3_512_Free(&hmac->hash.sha3); + break; + #endif + #endif /* WOLFSSL_SHA3 */ + + default: + break; + } + +#if defined(WOLFSSL_ASYNC_CRYPT) && defined(WC_ASYNC_ENABLE_HMAC) + wolfAsync_DevCtxFree(&hmac->asyncDev, WOLFSSL_ASYNC_MARKER_HMAC); +#endif /* WOLFSSL_ASYNC_CRYPT */ + + switch (hmac->macType) { + #ifndef NO_MD5 + case WC_MD5: + wc_Md5Free(&hmac->hash.md5); + break; + #endif /* !NO_MD5 */ + + #ifndef NO_SHA + case WC_SHA: + wc_ShaFree(&hmac->hash.sha); + break; + #endif /* !NO_SHA */ + + #ifdef WOLFSSL_SHA224 + case WC_SHA224: + wc_Sha224Free(&hmac->hash.sha224); + break; + #endif /* WOLFSSL_SHA224 */ + #ifndef NO_SHA256 + case WC_SHA256: + wc_Sha256Free(&hmac->hash.sha256); + break; + #endif /* !NO_SHA256 */ + + #ifdef WOLFSSL_SHA512 + #ifdef WOLFSSL_SHA384 + case WC_SHA384: + wc_Sha384Free(&hmac->hash.sha384); + break; + #endif /* WOLFSSL_SHA384 */ + case WC_SHA512: + wc_Sha512Free(&hmac->hash.sha512); + break; + #endif /* WOLFSSL_SHA512 */ + } +} + +int wolfSSL_GetHmacMaxSize(void) +{ + return WC_MAX_DIGEST_SIZE; +} + +#ifdef HAVE_HKDF + /* HMAC-KDF-Extract. + * RFC 5869 - HMAC-based Extract-and-Expand Key Derivation Function (HKDF). + * + * type The hash algorithm type. + * salt The optional salt value. + * saltSz The size of the salt. + * inKey The input keying material. + * inKeySz The size of the input keying material. + * out The pseudorandom key with the length that of the hash. + * returns 0 on success, otherwise failure. + */ + int wc_HKDF_Extract(int type, const byte* salt, word32 saltSz, + const byte* inKey, word32 inKeySz, byte* out) + { + byte tmp[WC_MAX_DIGEST_SIZE]; /* localSalt helper */ + Hmac myHmac; + int ret; + const byte* localSalt; /* either points to user input or tmp */ + int hashSz; + + ret = wc_HmacSizeByType(type); + if (ret < 0) + return ret; + + hashSz = ret; + localSalt = salt; + if (localSalt == NULL) { + XMEMSET(tmp, 0, hashSz); + localSalt = tmp; + saltSz = hashSz; + } + + ret = wc_HmacInit(&myHmac, NULL, INVALID_DEVID); + if (ret == 0) { + ret = wc_HmacSetKey(&myHmac, type, localSalt, saltSz); + if (ret == 0) + ret = wc_HmacUpdate(&myHmac, inKey, inKeySz); + if (ret == 0) + ret = wc_HmacFinal(&myHmac, out); + wc_HmacFree(&myHmac); + } + + return ret; + } + + /* HMAC-KDF-Expand. + * RFC 5869 - HMAC-based Extract-and-Expand Key Derivation Function (HKDF). + * + * type The hash algorithm type. + * inKey The input key. + * inKeySz The size of the input key. + * info The application specific information. + * infoSz The size of the application specific information. + * out The output keying material. + * returns 0 on success, otherwise failure. + */ + int wc_HKDF_Expand(int type, const byte* inKey, word32 inKeySz, + const byte* info, word32 infoSz, byte* out, word32 outSz) + { + byte tmp[WC_MAX_DIGEST_SIZE]; + Hmac myHmac; + int ret = 0; + word32 outIdx = 0; + word32 hashSz = wc_HmacSizeByType(type); + byte n = 0x1; + + ret = wc_HmacInit(&myHmac, NULL, INVALID_DEVID); + if (ret != 0) + return ret; + + while (outIdx < outSz) { + int tmpSz = (n == 1) ? 0 : hashSz; + word32 left = outSz - outIdx; + + ret = wc_HmacSetKey(&myHmac, type, inKey, inKeySz); + if (ret != 0) + break; + ret = wc_HmacUpdate(&myHmac, tmp, tmpSz); + if (ret != 0) + break; + ret = wc_HmacUpdate(&myHmac, info, infoSz); + if (ret != 0) + break; + ret = wc_HmacUpdate(&myHmac, &n, 1); + if (ret != 0) + break; + ret = wc_HmacFinal(&myHmac, tmp); + if (ret != 0) + break; + + left = min(left, hashSz); + XMEMCPY(out+outIdx, tmp, left); + + outIdx += hashSz; + n++; + } + + wc_HmacFree(&myHmac); + + return ret; + } + + /* HMAC-KDF. + * RFC 5869 - HMAC-based Extract-and-Expand Key Derivation Function (HKDF). + * + * type The hash algorithm type. + * inKey The input keying material. + * inKeySz The size of the input keying material. + * salt The optional salt value. + * saltSz The size of the salt. + * info The application specific information. + * infoSz The size of the application specific information. + * out The output keying material. + * returns 0 on success, otherwise failure. + */ + int wc_HKDF(int type, const byte* inKey, word32 inKeySz, + const byte* salt, word32 saltSz, + const byte* info, word32 infoSz, + byte* out, word32 outSz) + { + byte prk[WC_MAX_DIGEST_SIZE]; + int hashSz = wc_HmacSizeByType(type); + int ret; + + if (hashSz < 0) + return BAD_FUNC_ARG; + + ret = wc_HKDF_Extract(type, salt, saltSz, inKey, inKeySz, prk); + if (ret != 0) + return ret; + + return wc_HKDF_Expand(type, prk, hashSz, info, infoSz, out, outSz); + } + +#endif /* HAVE_HKDF */ + +#endif /* HAVE_FIPS */ +#endif /* NO_HMAC */ |