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82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* AES-CMAC from NIST Special Publication 800-38B — Recommendation for block cipher modes of operation: The CMAC mode for authentication.
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*
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* Copyright (C) 2006-2014, Brainspark B.V.
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* Copyright (C) 2014, Anargyros Plemenos
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* Tests added Merkok, 2018
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program 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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* This program 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Reference : https://polarssl.org/discussions/generic/authentication-token
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* NIST Special Publication 800-38B — Recommendation for block cipher modes of operation: The CMAC mode for authentication.
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* Tests here:
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* https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Standards-and-Guidelines/documents/examples/AES_CMAC.pdf
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include "aes.h"
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typedef struct aes_cmac_128_context {
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aes_context aes_key;
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uint8_t K1[16];
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uint8_t K2[16];
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uint8_t X[16];
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uint8_t last[16];
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size_t last_len;
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}
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aes_cmac128_context;
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/*
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* \brief AES-CMAC-128 context setup
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*
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* \param ctx context to be initialized
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* \param key secret key for AES-128
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*/
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void aes_cmac128_starts(aes_cmac128_context *ctx, const uint8_t K[16]);
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/*
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* \brief AES-CMAC-128 process message
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*
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* \param ctx context to be initialized
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* \param _msg the given message
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* \param _msg_len the length of message
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*/
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void aes_cmac128_update(aes_cmac128_context *ctx, const uint8_t *_msg, size_t _msg_len);
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/*
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* \brief AES-CMAC-128 compute T
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*
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* \param ctx context to be initialized
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* \param T the generated MAC which is used to validate the message
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*/
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void aes_cmac128_final(aes_cmac128_context *ctx, uint8_t T[16]);
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/**
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* \brief Checkup routine
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*
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* \return 0 if successful, or 1 if the test failed
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*/
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int aes_cmac_self_test( int verbose );
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