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/* $FreeBSD$ */
/* $KAME: rijndael-api-fst.h,v 1.6 2001/05/27 00:23:23 itojun Exp $ */
/*
* rijndael-api-fst.h v2.3 April '2000
*
* Optimised ANSI C code
*
*/
#ifndef __RIJNDAEL_API_FST_H
#define __RIJNDAEL_API_FST_H
#include <crypto/rijndael/rijndael.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? */
#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 */
/* Typedefs */
/* The structure for key information */
typedef struct {
u_int8_t 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 */
u_int32_t rk[4*(RIJNDAEL_MAXNR + 1)]; /* key schedule */
u_int32_t ek[4*(RIJNDAEL_MAXNR + 1)]; /* CFB1 key schedule (encryption only) */
} keyInstance;
/* The structure for cipher information */
typedef struct { /* changed order of the components */
u_int8_t mode; /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
u_int8_t IV[RIJNDAEL_MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */
} cipherInstance;
/* Function prototypes */
int rijndael_makeKey(keyInstance *, u_int8_t, int, const char *);
int rijndael_cipherInit(cipherInstance *, u_int8_t, char *);
int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const u_int8_t *,
int, u_int8_t *);
int rijndael_padEncrypt(cipherInstance *, keyInstance *, const u_int8_t *,
int, u_int8_t *);
int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const u_int8_t *,
int, u_int8_t *);
int rijndael_padDecrypt(cipherInstance *, keyInstance *, const u_int8_t *,
int, u_int8_t *);
#endif /* __RIJNDAEL_API_FST_H */
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