sys/crypto/rijndael/rijndael-api-fst.h

   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 */
  41 typedef struct {
  42     uint8_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         uint32_t   rk[4*(RIJNDAEL_MAXNR + 1)];        /* key schedule */
  47         uint32_t   ek[4*(RIJNDAEL_MAXNR + 1)];        /* CFB1 key schedule (encryption only) */
  48 } keyInstance;
  49
  50 /*  The structure for cipher information */
  51 typedef struct {                    /* changed order of the components */
  52     uint8_t mode;                  /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
  53     uint8_t IV[RIJNDAEL_MAX_IV_SIZE]; /* A possible Initialization Vector for ciphering */
  54 } cipherInstance;
  55
  56 /*  Function prototypes  */
  57
  58 int rijndael_makeKey(keyInstance *, uint8_t, int, const char *);
  59
  60 int rijndael_cipherInit(cipherInstance *, uint8_t, char *);
  61
  62 int rijndael_blockEncrypt(cipherInstance *, keyInstance *, const uint8_t *,
  63         int, uint8_t *);
  64 int rijndael_padEncrypt(cipherInstance *, keyInstance *, const uint8_t *,
  65         int, uint8_t *);
  66
  67 int rijndael_blockDecrypt(cipherInstance *, keyInstance *, const uint8_t *,
  68         int, uint8_t *);
  69 int rijndael_padDecrypt(cipherInstance *, keyInstance *, const uint8_t *,
  70         int, uint8_t *);
  71
  72 #endif /*  __RIJNDAEL_API_FST_H */