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98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
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/* cmac.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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#ifndef WOLF_CRYPT_CMAC_H
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#define WOLF_CRYPT_CMAC_H
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#include <libwolfssl/wolfcrypt/types.h>
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#include <libwolfssl/wolfcrypt/aes.h>
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#if !defined(NO_AES) && defined(WOLFSSL_CMAC)
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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 <libwolfssl/wolfcrypt/fips.h>
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#endif /* HAVE_FIPS_VERSION >= 2 */
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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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#ifndef WC_CMAC_TYPE_DEFINED
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typedef struct Cmac Cmac;
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#define WC_CMAC_TYPE_DEFINED
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#endif
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struct Cmac {
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Aes aes;
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byte buffer[AES_BLOCK_SIZE]; /* partially stored block */
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byte digest[AES_BLOCK_SIZE]; /* running digest */
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byte k1[AES_BLOCK_SIZE];
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byte k2[AES_BLOCK_SIZE];
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word32 bufferSz;
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word32 totalSz;
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};
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typedef enum CmacType {
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WC_CMAC_AES = 1
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} CmacType;
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#define WC_CMAC_TAG_MAX_SZ AES_BLOCK_SIZE
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#define WC_CMAC_TAG_MIN_SZ (AES_BLOCK_SIZE/4)
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#endif /* HAVE_FIPS */
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WOLFSSL_API
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int wc_InitCmac(Cmac* cmac,
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const byte* key, word32 keySz,
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int type, void* unused);
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WOLFSSL_API
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int wc_CmacUpdate(Cmac* cmac,
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const byte* in, word32 inSz);
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WOLFSSL_API
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int wc_CmacFinal(Cmac* cmac,
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byte* out, word32* outSz);
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WOLFSSL_API
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int wc_AesCmacGenerate(byte* out, word32* outSz,
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const byte* in, word32 inSz,
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const byte* key, word32 keySz);
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WOLFSSL_API
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int wc_AesCmacVerify(const byte* check, word32 checkSz,
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const byte* in, word32 inSz,
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const byte* key, word32 keySz);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* NO_AES && WOLFSSL_CMAC */
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#endif /* WOLF_CRYPT_CMAC_H */
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