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- /* hmac.h
- *
- * Copyright (C) 2006-2017 wolfSSL Inc.
- *
- * This file is part of wolfSSL.
- *
- * wolfSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * wolfSSL is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
- */
- #ifndef NO_HMAC
- #ifndef WOLF_CRYPT_HMAC_H
- #define WOLF_CRYPT_HMAC_H
- #include <wolfssl/wolfcrypt/hash.h>
- #ifdef HAVE_FIPS
- /* for fips */
- #include <cyassl/ctaocrypt/hmac.h>
- #endif
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifndef HAVE_FIPS
- #ifdef WOLFSSL_ASYNC_CRYPT
- #include <wolfssl/wolfcrypt/async.h>
- #endif
- #ifndef NO_OLD_WC_NAMES
- #define HMAC_BLOCK_SIZE WC_HMAC_BLOCK_SIZE
- #endif
- enum {
- HMAC_FIPS_MIN_KEY = 14, /* 112 bit key length minimum */
- IPAD = 0x36,
- OPAD = 0x5C,
- /* If any hash is not enabled, add the ID here. */
- #ifdef NO_MD5
- WC_MD5 = 0,
- #endif
- #ifdef NO_SHA
- WC_SHA = 1,
- #endif
- #ifdef NO_SHA256
- WC_SHA256 = 2,
- #endif
- #ifndef WOLFSSL_SHA512
- WC_SHA512 = 4,
- #endif
- #ifndef WOLFSSL_SHA384
- WC_SHA384 = 5,
- #endif
- #ifndef HAVE_BLAKE2
- BLAKE2B_ID = 7,
- #endif
- #ifndef WOLFSSL_SHA224
- WC_SHA224 = 8,
- #endif
- /* Select the largest available hash for the buffer size. */
- #if defined(WOLFSSL_SHA512)
- WC_HMAC_BLOCK_SIZE = WC_SHA512_BLOCK_SIZE,
- #elif defined(HAVE_BLAKE2)
- WC_HMAC_BLOCK_SIZE = BLAKE2B_BLOCKBYTES,
- #elif defined(WOLFSSL_SHA384)
- WC_HMAC_BLOCK_SIZE = WC_SHA384_BLOCK_SIZE
- #elif !defined(NO_SHA256)
- WC_HMAC_BLOCK_SIZE = WC_SHA256_BLOCK_SIZE
- #elif defined(WOLFSSL_SHA224)
- WC_HMAC_BLOCK_SIZE = WC_SHA224_BLOCK_SIZE
- #elif !defined(NO_SHA)
- WC_HMAC_BLOCK_SIZE = WC_SHA_BLOCK_SIZE,
- #elif !defined(NO_MD5)
- WC_HMAC_BLOCK_SIZE = WC_MD5_BLOCK_SIZE,
- #else
- #error "You have to have some kind of hash if you want to use HMAC."
- #endif
- };
- /* hash union */
- typedef union {
- #ifndef NO_MD5
- wc_Md5 md5;
- #endif
- #ifndef NO_SHA
- wc_Sha sha;
- #endif
- #ifdef WOLFSSL_SHA224
- wc_Sha224 sha224;
- #endif
- #ifndef NO_SHA256
- wc_Sha256 sha256;
- #endif
- #ifdef WOLFSSL_SHA512
- #ifdef WOLFSSL_SHA384
- wc_Sha384 sha384;
- #endif
- wc_Sha512 sha512;
- #endif
- #ifdef HAVE_BLAKE2
- Blake2b blake2b;
- #endif
- } Hash;
- /* Hmac digest */
- typedef struct Hmac {
- Hash hash;
- word32 ipad[WC_HMAC_BLOCK_SIZE / sizeof(word32)]; /* same block size all*/
- word32 opad[WC_HMAC_BLOCK_SIZE / sizeof(word32)];
- word32 innerHash[WC_MAX_DIGEST_SIZE / sizeof(word32)];
- void* heap; /* heap hint */
- byte macType; /* md5 sha or sha256 */
- byte innerHashKeyed; /* keyed flag */
- #ifdef WOLFSSL_ASYNC_CRYPT
- WC_ASYNC_DEV asyncDev;
- word16 keyLen; /* hmac key length (key in ipad) */
- #ifdef HAVE_CAVIUM
- byte* data; /* buffered input data for one call */
- word16 dataLen;
- #endif /* HAVE_CAVIUM */
- #endif /* WOLFSSL_ASYNC_CRYPT */
- } Hmac;
- #endif /* HAVE_FIPS */
- /* does init */
- WOLFSSL_API int wc_HmacSetKey(Hmac*, int type, const byte* key, word32 keySz);
- WOLFSSL_API int wc_HmacUpdate(Hmac*, const byte*, word32);
- WOLFSSL_API int wc_HmacFinal(Hmac*, byte*);
- WOLFSSL_API int wc_HmacSizeByType(int type);
- WOLFSSL_API int wc_HmacInit(Hmac* hmac, void* heap, int devId);
- WOLFSSL_API void wc_HmacFree(Hmac*);
- WOLFSSL_API int wolfSSL_GetHmacMaxSize(void);
- WOLFSSL_LOCAL int _InitHmac(Hmac* hmac, int type, void* heap);
- #ifdef HAVE_HKDF
- WOLFSSL_API int wc_HKDF_Extract(int type, const byte* salt, word32 saltSz,
- const byte* inKey, word32 inKeySz, byte* out);
- WOLFSSL_API int wc_HKDF_Expand(int type, const byte* inKey, word32 inKeySz,
- const byte* info, word32 infoSz,
- byte* out, word32 outSz);
- WOLFSSL_API int wc_HKDF(int type, const byte* inKey, word32 inKeySz,
- const byte* salt, word32 saltSz,
- const byte* info, word32 infoSz,
- byte* out, word32 outSz);
- #endif /* HAVE_HKDF */
- #ifdef __cplusplus
- } /* extern "C" */
- #endif
- #endif /* WOLF_CRYPT_HMAC_H */
- #endif /* NO_HMAC */
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