134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/**
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* \file camellia.h
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*
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* Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org>
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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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#ifndef POLARSSL_CAMELLIA_H
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#define POLARSSL_CAMELLIA_H
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#ifdef _MSC_VER
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#include <basetsd.h>
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typedef UINT32 uint32_t;
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#else
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#include <inttypes.h>
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#endif
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#define CAMELLIA_ENCRYPT 1
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#define CAMELLIA_DECRYPT 0
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#define POLARSSL_ERR_CAMELLIA_INVALID_KEY_LENGTH -0x0a00
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/**
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* \brief CAMELLIA context structure
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*/
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typedef struct
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{
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int nr; /*!< number of rounds */
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uint32_t rk[68]; /*!< CAMELLIA round keys */
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}
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camellia_context;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief CAMELLIA key schedule (encryption)
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*
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* \param ctx CAMELLIA context to be initialized
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* \param key encryption key
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* \param keysize must be 128, 192 or 256
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*
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* \return 0 if successful, or POLARSSL_ERR_CAMELLIA_INVALID_KEY_LENGTH
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*/
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int camellia_setkey_enc( camellia_context *ctx, unsigned char *key, int keysize );
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/**
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* \brief CAMELLIA key schedule (decryption)
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*
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* \param ctx CAMELLIA context to be initialized
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* \param key decryption key
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* \param keysize must be 128, 192 or 256
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*
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* \return 0 if successful, or POLARSSL_ERR_CAMELLIA_INVALID_KEY_LENGTH
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*/
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int camellia_setkey_dec( camellia_context *ctx, unsigned char *key, int keysize );
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/**
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* \brief CAMELLIA-ECB block encryption/decryption
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*
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* \param ctx CAMELLIA context
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* \param mode CAMELLIA_ENCRYPT or CAMELLIA_DECRYPT
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* \param input 16-byte input block
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* \param output 16-byte output block
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*/
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void camellia_crypt_ecb( camellia_context *ctx,
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int mode,
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unsigned char input[16],
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unsigned char output[16] );
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/**
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* \brief CAMELLIA-CBC buffer encryption/decryption
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* Length should be a multiple of the block
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* size (16 bytes)
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*
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* \param ctx CAMELLIA context
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* \param mode CAMELLIA_ENCRYPT or CAMELLIA_DECRYPT
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* \param length length of the input data
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* \param iv initialization vector (updated after use)
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* \param input buffer holding the input data
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* \param output buffer holding the output data
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*/
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void camellia_crypt_cbc( camellia_context *ctx,
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int mode,
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int length,
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unsigned char iv[16],
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unsigned char *input,
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unsigned char *output );
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/**
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* \brief CAMELLIA-CFB128 buffer encryption/decryption
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*
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* \param ctx CAMELLIA context
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* \param mode CAMELLIA_ENCRYPT or CAMELLIA_DECRYPT
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* \param length length of the input data
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* \param iv_off offset in IV (updated after use)
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* \param iv initialization vector (updated after use)
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* \param input buffer holding the input data
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* \param output buffer holding the output data
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*/
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void camellia_crypt_cfb128( camellia_context *ctx,
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int mode,
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int length,
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int *iv_off,
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unsigned char iv[16],
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unsigned char *input,
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unsigned char *output );
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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 camellia_self_test( int verbose );
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#ifdef __cplusplus
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}
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#endif
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#endif /* camellia.h */
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