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/* $NetBSD: rijndael-api-fst.h,v 1.8 2007/01/21 23:00:08 cbiere Exp $ */
/**
* rijndael-api-fst.h
*
* @version 2.9 (December 2000)
*
* Optimised ANSI C code for the Rijndael cipher (now AES)
*
* @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
* @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
* @author Paulo Barreto <paulo.barreto@terra.com.br>
*
* This code is hereby placed in the public domain.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Acknowledgements:
*
* We are deeply indebted to the following people for their bug reports,
* fixes, and improvement suggestions to this implementation. Though we
* tried to list all contributions, we apologise in advance for any
* missing reference.
*
* Andrew Bales <Andrew.Bales@Honeywell.com>
* Markus Friedl <markus.friedl@informatik.uni-erlangen.de>
* John Skodon <skodonj@webquill.com>
*/
#ifndef __RIJNDAEL_API_FST_H
#define __RIJNDAEL_API_FST_H
/* Blocksize: 16 * 8 = 128; 128 * 1 = 128 */
#define B_SIZ 16
#define BNUM 1
#if defined(UINT32)
typedef unsigned char u8;
typedef UINT32 u32;
#else
typedef unsigned char u8;
#if defined(HAVE_INT_32)
typedef unsigned int u32;
#elif defined(HAVE_LONG_32)
typedef unsigned long u32;
#elif defined(HAVE_SHORT_32)
typedef unsigned short u32;
#else
#error "No 32 bit integer type found"
#endif
#endif
#include "rijndael-alg-fst.h"
/* Generic Defines */
#define DIR_ENCRYPT 0 /* Are we encrpyting? */
#define DIR_DECRYPT 1 /* Are we decrpyting? */
#define MODE_ECB 1 /* Are we ciphering in ECB mode? */
#define MODE_CBC 2 /* Are we ciphering in CBC mode? */
#define MODE_CFB1 3 /* Are we ciphering in 1-bit CFB mode? */
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define BITSPERBLOCK 128 /* Default number of bits in a cipher block */
/* Error Codes */
#define BAD_KEY_DIR -1 /* Key direction is invalid, e.g., unknown value */
#define BAD_KEY_MAT -2 /* Key material not of correct length */
#define BAD_KEY_INSTANCE -3 /* Key passed is not valid */
#define BAD_CIPHER_MODE -4 /* Params struct passed to cipherInit invalid */
#define BAD_CIPHER_STATE -5 /* Cipher in wrong state (e.g., not initialized) */
#define BAD_BLOCK_LENGTH -6
#define BAD_CIPHER_INSTANCE -7
#define BAD_DATA -8 /* Data contents are invalid, e.g., invalid padding */
#define BAD_OTHER -9 /* Unknown error */
/* Algorithm-specific Defines */
#define RIJNDAEL_MAX_KEY_SIZE 64 /* # of ASCII char's needed to represent a key */
#define RIJNDAEL_MAX_IV_SIZE 16 /* # bytes needed to represent an IV */
#ifdef SH_ENCRYPT
/* Typedefs */
typedef unsigned char BYTE;
/* The structure for key information */
typedef struct {
u32 rk[4*(RIJNDAEL_MAXNR + 1)]; /* key schedule */
u32 ek[4*(RIJNDAEL_MAXNR + 1)]; /* CFB1 key schedule (encryption only) */
BYTE direction; /* Key used for encrypting or decrypting? */
int keyLen; /* Length of the key */
char keyMaterial[RIJNDAEL_MAX_KEY_SIZE+1]; /* Raw key data in ASCII, e.g., user input or KAT values */
int Nr; /* key-length-dependent number of rounds */
} keyInstance;
/* The structure for cipher information */
typedef struct { /* changed order of the components */
u32 IV[RIJNDAEL_MAX_IV_SIZE / sizeof(u32)];
/* A possible Initialization Vector for ciphering */
BYTE mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
} cipherInstance;
/* Function prototypes */
int rijndael_makeKey(keyInstance *, BYTE, int, const char *);
int rijndael_cipherInit(cipherInstance *, BYTE, const char *);
int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
int rijndael_padEncrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
int rijndael_padDecrypt(cipherInstance *, keyInstance *, const BYTE *, int, BYTE *);
/* SH_ENCRYPT */
#endif
#endif /* __RIJNDAEL_API_FST_H */
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