/* camellia.h	ver 1.2.0
 *
 * Copyright (C) 2006,2007
 * NTT (Nippon Telegraph and Telephone Corporation).
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef HEADER_CAMELLIA_H
#define HEADER_CAMELLIA_H

/* To use Camellia with libraries it is often useful to keep the name
 * space of the library clean.  The following macro is thus useful:
 *
 *     #define CAMELLIA_EXT_SYM_PREFIX foo_
 *  
 * This prefixes all external symbols with "foo_".
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef CAMELLIA_EXT_SYM_PREFIX
#define CAMELLIA_PREFIX1(x,y) x ## y
#define CAMELLIA_PREFIX2(x,y) CAMELLIA_PREFIX1(x,y)
#define CAMELLIA_PREFIX(x)    CAMELLIA_PREFIX2(CAMELLIA_EXT_SYM_PREFIX,x)
#define Camellia_Ekeygen      CAMELLIA_PREFIX(Camellia_Ekeygen)
#define Camellia_EncryptBlock CAMELLIA_PREFIX(Camellia_EncryptBlock)
#define Camellia_DecryptBlock CAMELLIA_PREFIX(Camellia_DecryptBlock)
#define camellia_decrypt128   CAMELLIA_PREFIX(camellia_decrypt128)
#define camellia_decrypt256   CAMELLIA_PREFIX(camellia_decrypt256)
#define camellia_encrypt128   CAMELLIA_PREFIX(camellia_encrypt128)
#define camellia_encrypt256   CAMELLIA_PREFIX(camellia_encrypt256)
#define camellia_setup128     CAMELLIA_PREFIX(camellia_setup128)
#define camellia_setup192     CAMELLIA_PREFIX(camellia_setup192) 
#define camellia_setup256     CAMELLIA_PREFIX(camellia_setup256)
#endif /*CAMELLIA_EXT_SYM_PREFIX*/


#ifdef  __cplusplus
extern "C" {
#endif

#define CAMELLIA_BLOCK_SIZE 16
#define CAMELLIA_TABLE_BYTE_LEN 272
#define CAMELLIA_TABLE_WORD_LEN (CAMELLIA_TABLE_BYTE_LEN / 4)

typedef unsigned int KEY_TABLE_TYPE[CAMELLIA_TABLE_WORD_LEN];


void Camellia_Ekeygen(const int keyBitLength,
		      const unsigned char *rawKey, 
		      KEY_TABLE_TYPE keyTable);

void Camellia_EncryptBlock(const int keyBitLength,
			   const unsigned char *plaintext, 
			   const KEY_TABLE_TYPE keyTable, 
			   unsigned char *cipherText);

void Camellia_DecryptBlock(const int keyBitLength, 
			   const unsigned char *cipherText, 
			   const KEY_TABLE_TYPE keyTable, 
			   unsigned char *plaintext);


#ifdef  __cplusplus
}
#endif

#endif /* HEADER_CAMELLIA_H */