1/*	$KAME: rijndael-api-fst.h,v 1.6 2001/05/27 00:23:23 itojun Exp $	*/
2
3/*
4 * rijndael-api-fst.h   v2.3   April '2000
5 *
6 * Optimised ANSI C code
7 *
8 */
9
10#ifndef __RIJNDAEL_API_FST_H
11#define __RIJNDAEL_API_FST_H
12
13#include <crypto/rijndael/rijndael.h>
14
15/*  Generic Defines  */
16#define     DIR_ENCRYPT           0 /*  Are we encrpyting?  */
17#define     DIR_DECRYPT           1 /*  Are we decrpyting?  */
18#define     MODE_ECB              1 /*  Are we ciphering in ECB mode?   */
19#define     MODE_CBC              2 /*  Are we ciphering in CBC mode?   */
20#define     MODE_CFB1             3 /*  Are we ciphering in 1-bit CFB mode? */
21#define     BITSPERBLOCK        128 /* Default number of bits in a cipher block */
22
23/*  Error Codes  */
24#define     BAD_KEY_DIR          -1 /*  Key direction is invalid, e.g., unknown value */
25#define     BAD_KEY_MAT          -2 /*  Key material not of correct length */
26#define     BAD_KEY_INSTANCE     -3 /*  Key passed is not valid */
27#define     BAD_CIPHER_MODE      -4 /*  Params struct passed to cipherInit invalid */
28#define     BAD_CIPHER_STATE     -5 /*  Cipher in wrong state (e.g., not initialized) */
29#define     BAD_BLOCK_LENGTH     -6
30#define     BAD_CIPHER_INSTANCE  -7
31#define     BAD_DATA             -8 /*  Data contents are invalid, e.g., invalid padding */
32#define     BAD_OTHER            -9 /*  Unknown error */
33
34/*  Algorithm-specific Defines  */
35#define     RIJNDAEL_MAX_KEY_SIZE         64 /* # of ASCII char's needed to represent a key */
36#define     RIJNDAEL_MAX_IV_SIZE          16 /* # bytes needed to represent an IV  */
37
38/*  Typedefs  */
39
40/*  The structure for key information */
41typedef struct {
42    u_int8_t  direction;            /* Key used for encrypting or decrypting? */
43    int   keyLen;                   /* Length of the key  */
44    char  keyMaterial[RIJNDAEL_MAX_KEY_SIZE+1];  /* Raw key data in ASCII, e.g., user input or KAT values */
45	int   Nr;                       /* key-length-dependent number of rounds */
46	u_int32_t   rk[4*(RIJNDAEL_MAXNR + 1)];        /* key schedule */
47	u_int32_t   ek[4*(RIJNDAEL_MAXNR + 1)];        /* CFB1 key schedule (encryption only) */
48} keyInstance;
49
50/*  The structure for cipher information */
51typedef struct {                    /* changed order of the components */
52    u_int8_t mode;                  /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
53    u_int8_t IV[RIJNDAEL_MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */
54} cipherInstance;
55
56/*  Function prototypes  */
57
58int rijndael_makeKey(keyInstance *, u_int8_t, int, const char *);
59
60int rijndael_cipherInit(cipherInstance *, u_int8_t, char *);
61
62int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const u_int8_t *,
63	int, u_int8_t *);
64int rijndael_padEncrypt(cipherInstance *, keyInstance *, const u_int8_t *,
65	int, u_int8_t *);
66
67int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const u_int8_t *,
68	int, u_int8_t *);
69int rijndael_padDecrypt(cipherInstance *, keyInstance *, const u_int8_t *,
70	int, u_int8_t *);
71
72#endif /*  __RIJNDAEL_API_FST_H */
73