208 lines
5.3 KiB
C
208 lines
5.3 KiB
C
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/* hmac.h
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*
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* Copyright (C) 2006-2019 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/*!
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\file wolfssl/wolfcrypt/hmac.h
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*/
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#ifndef NO_HMAC
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#ifndef WOLF_CRYPT_HMAC_H
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#define WOLF_CRYPT_HMAC_H
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#include <wolfssl/wolfcrypt/hash.h>
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#if defined(HAVE_FIPS) && \
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(!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
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/* for fips @wc_fips */
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#include <cyassl/ctaocrypt/hmac.h>
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#define WC_HMAC_BLOCK_SIZE HMAC_BLOCK_SIZE
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#endif
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#if defined(HAVE_FIPS) && \
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defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
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#include <wolfssl/wolfcrypt/fips.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* avoid redefinition of structs */
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#if !defined(HAVE_FIPS) || \
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(defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2))
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#ifdef WOLFSSL_ASYNC_CRYPT
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#include <wolfssl/wolfcrypt/async.h>
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#endif
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#ifndef NO_OLD_WC_NAMES
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#define HMAC_BLOCK_SIZE WC_HMAC_BLOCK_SIZE
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#endif
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#define WC_HMAC_INNER_HASH_KEYED_SW 1
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#define WC_HMAC_INNER_HASH_KEYED_DEV 2
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enum {
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HMAC_FIPS_MIN_KEY = 14, /* 112 bit key length minimum */
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IPAD = 0x36,
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OPAD = 0x5C,
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/* If any hash is not enabled, add the ID here. */
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#ifdef NO_MD5
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WC_MD5 = WC_HASH_TYPE_MD5,
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#endif
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#ifdef NO_SHA
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WC_SHA = WC_HASH_TYPE_SHA,
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#endif
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#ifdef NO_SHA256
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WC_SHA256 = WC_HASH_TYPE_SHA256,
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#endif
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#ifndef WOLFSSL_SHA512
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WC_SHA512 = WC_HASH_TYPE_SHA512,
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#endif
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#ifndef WOLFSSL_SHA384
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WC_SHA384 = WC_HASH_TYPE_SHA384,
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#endif
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#ifndef WOLFSSL_SHA224
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WC_SHA224 = WC_HASH_TYPE_SHA224,
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#endif
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#ifndef WOLFSSL_SHA3
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WC_SHA3_224 = WC_HASH_TYPE_SHA3_224,
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WC_SHA3_256 = WC_HASH_TYPE_SHA3_256,
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WC_SHA3_384 = WC_HASH_TYPE_SHA3_384,
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WC_SHA3_512 = WC_HASH_TYPE_SHA3_512,
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#endif
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#ifdef HAVE_PKCS11
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HMAC_MAX_ID_LEN = 32,
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#endif
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};
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/* Select the largest available hash for the buffer size. */
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#define WC_HMAC_BLOCK_SIZE WC_MAX_BLOCK_SIZE
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#if !defined(WOLFSSL_SHA3) && !defined(WOLFSSL_SHA512) && \
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!defined(WOLFSSL_SHA384) && defined(NO_SHA256) && \
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defined(WOLFSSL_SHA224) && defined(NO_SHA) && defined(NO_MD5)
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#error "You have to have some kind of hash if you want to use HMAC."
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#endif
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/* hash union */
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typedef union {
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#ifndef NO_MD5
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wc_Md5 md5;
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#endif
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#ifndef NO_SHA
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wc_Sha sha;
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#endif
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#ifdef WOLFSSL_SHA224
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wc_Sha224 sha224;
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#endif
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#ifndef NO_SHA256
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wc_Sha256 sha256;
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#endif
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#ifdef WOLFSSL_SHA384
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wc_Sha384 sha384;
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#endif
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#ifdef WOLFSSL_SHA512
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wc_Sha512 sha512;
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#endif
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#ifdef WOLFSSL_SHA3
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wc_Sha3 sha3;
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#endif
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} Hash;
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/* Hmac digest */
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struct Hmac {
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Hash hash;
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word32 ipad[WC_HMAC_BLOCK_SIZE / sizeof(word32)]; /* same block size all*/
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word32 opad[WC_HMAC_BLOCK_SIZE / sizeof(word32)];
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word32 innerHash[WC_MAX_DIGEST_SIZE / sizeof(word32)];
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void* heap; /* heap hint */
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byte macType; /* md5 sha or sha256 */
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byte innerHashKeyed; /* keyed flag */
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#ifdef WOLFSSL_ASYNC_CRYPT
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WC_ASYNC_DEV asyncDev;
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#endif /* WOLFSSL_ASYNC_CRYPT */
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#ifdef WOLF_CRYPTO_CB
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int devId;
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void* devCtx;
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const byte* keyRaw;
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#endif
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#ifdef HAVE_PKCS11
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byte id[HMAC_MAX_ID_LEN];
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int idLen;
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#endif
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#if defined(WOLFSSL_ASYNC_CRYPT) || defined(WOLF_CRYPTO_CB)
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word16 keyLen; /* hmac key length (key in ipad) */
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#endif
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};
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#ifndef WC_HMAC_TYPE_DEFINED
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typedef struct Hmac Hmac;
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#define WC_HMAC_TYPE_DEFINED
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#endif
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#endif /* HAVE_FIPS */
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/* does init */
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WOLFSSL_API int wc_HmacSetKey(Hmac*, int type, const byte* key, word32 keySz);
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WOLFSSL_API int wc_HmacUpdate(Hmac*, const byte*, word32);
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WOLFSSL_API int wc_HmacFinal(Hmac*, byte*);
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WOLFSSL_API int wc_HmacSizeByType(int type);
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WOLFSSL_API int wc_HmacInit(Hmac* hmac, void* heap, int devId);
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WOLFSSL_API int wc_HmacInit_Id(Hmac* hmac, byte* id, int len, void* heap,
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int devId);
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WOLFSSL_API void wc_HmacFree(Hmac*);
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WOLFSSL_API int wolfSSL_GetHmacMaxSize(void);
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WOLFSSL_LOCAL int _InitHmac(Hmac* hmac, int type, void* heap);
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#ifdef HAVE_HKDF
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WOLFSSL_API int wc_HKDF_Extract(int type, const byte* salt, word32 saltSz,
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const byte* inKey, word32 inKeySz, byte* out);
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WOLFSSL_API int wc_HKDF_Expand(int type, const byte* inKey, word32 inKeySz,
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const byte* info, word32 infoSz,
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byte* out, word32 outSz);
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WOLFSSL_API int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
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const byte* salt, word32 saltSz,
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const byte* info, word32 infoSz,
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byte* out, word32 outSz);
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#endif /* HAVE_HKDF */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* WOLF_CRYPT_HMAC_H */
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#endif /* NO_HMAC */
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