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

   1 /*      $FreeBSD: src/sys/crypto/rijndael/rijndael-api-fst.h,v 1.2.2.1 2001/07/03 11:01:36 ume Exp $    */
   2 /*      $DragonFly: src/sys/crypto/rijndael/rijndael-api-fst.h,v 1.2 2003/06/17 04:28:20 dillon Exp $   */
   3 /*      $KAME: rijndael-api-fst.h,v 1.6 2001/05/27 00:23:23 itojun Exp $        */
   4
   5 /*
   6  * rijndael-api-fst.h   v2.3   April '2000
   7  *
   8  * Optimised ANSI C code
   9  *
  10  * #define INTERMEDIATE_VALUE_KAT to generate the Intermediate Value Known Answer Test.
  11  */
  12
  13 #ifndef __RIJNDAEL_API_FST_H
  14 #define __RIJNDAEL_API_FST_H
  15
  16 #include <crypto/rijndael/rijndael-alg-fst.h>
  17
  18 /*  Defines:
  19         Add any additional defines you need
  20 */
  21
  22 #define     DIR_ENCRYPT           0 /*  Are we encrpyting?  */
  23 #define     DIR_DECRYPT           1 /*  Are we decrpyting?  */
  24 #define     MODE_ECB              1 /*  Are we ciphering in ECB mode?   */
  25 #define     MODE_CBC              2 /*  Are we ciphering in CBC mode?   */
  26 #define     MODE_CFB1             3 /*  Are we ciphering in 1-bit CFB mode? */
  27 #define     TRUE                  1
  28 #define     FALSE                 0
  29 #define     BITSPERBLOCK        128 /* Default number of bits in a cipher block */
  30
  31 /*  Error Codes - CHANGE POSSIBLE: inclusion of additional error codes  */
  32 #define     BAD_KEY_DIR          -1 /*  Key direction is invalid, e.g., unknown value */
  33 #define     BAD_KEY_MAT          -2 /*  Key material not of correct length */
  34 #define     BAD_KEY_INSTANCE     -3 /*  Key passed is not valid */
  35 #define     BAD_CIPHER_MODE      -4 /*  Params struct passed to cipherInit invalid */
  36 #define     BAD_CIPHER_STATE     -5 /*  Cipher in wrong state (e.g., not initialized) */
  37 #define     BAD_BLOCK_LENGTH     -6
  38 #define     BAD_CIPHER_INSTANCE  -7
  39 #define     BAD_DATA             -8 /*  Data contents are invalid, e.g., invalid padding */
  40 #define     BAD_OTHER            -9 /*  Unknown error */
  41
  42 /*  CHANGE POSSIBLE:  inclusion of algorithm specific defines  */
  43 #define     MAX_KEY_SIZE         64 /* # of ASCII char's needed to represent a key */
  44 #define     MAX_IV_SIZE          16 /* # bytes needed to represent an IV  */
  45
  46 /*  Typedefs:
  47
  48         Typedef'ed data storage elements.  Add any algorithm specific
  49 parameters at the bottom of the structs as appropriate.
  50 */
  51
  52 /*  The structure for key information */
  53 typedef struct {
  54     u_int8_t  direction;            /* Key used for encrypting or decrypting? */
  55     int   keyLen;                   /* Length of the key  */
  56     char  keyMaterial[MAX_KEY_SIZE+1];  /* Raw key data in ASCII, e.g., user input or KAT values */
  57         /*  The following parameters are algorithm dependent, replace or add as necessary  */
  58         int   ROUNDS;                   /* key-length-dependent number of rounds */
  59     int   blockLen;                 /* block length */
  60     union {
  61         u_int8_t xkS8[RIJNDAEL_MAXROUNDS+1][4][4];      /* key schedule         */
  62         u_int32_t xkS32[RIJNDAEL_MAXROUNDS+1][4];       /* key schedule         */
  63     } xKeySched;
  64 #define keySched        xKeySched.xkS8
  65 } keyInstance;
  66
  67 /*  The structure for cipher information */
  68 typedef struct {                    /* changed order of the components */
  69     u_int8_t mode;                  /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
  70     u_int8_t IV[MAX_IV_SIZE];       /* A possible Initialization Vector for ciphering */
  71         /*  Add any algorithm specific parameters needed here  */
  72     int   blockLen;                 /* Sample: Handles non-128 bit block sizes (if available) */
  73 } cipherInstance;
  74
  75 /*  Function prototypes  */
  76 /*  CHANGED: nothing
  77         TODO: implement the following extensions to setup 192-bit and 256-bit block lengths:
  78         makeKeyEx():    parameter blockLen added
  79                         -- this parameter is absolutely necessary if you want to
  80                         setup the round keys in a variable block length setting
  81             cipherInitEx(): parameter blockLen added (for obvious reasons)
  82  */
  83
  84 int rijndael_makeKey(keyInstance *key, u_int8_t direction, int keyLen, char *keyMaterial);
  85
  86 int rijndael_cipherInit(cipherInstance *cipher, u_int8_t mode, char *IV);
  87
  88 int rijndael_blockEncrypt(cipherInstance *cipher, keyInstance *key,
  89         u_int8_t *input, int inputLen, u_int8_t *outBuffer);
  90
  91 int rijndael_padEncrypt(cipherInstance *cipher, keyInstance *key,
  92                 u_int8_t *input, int inputOctets, u_int8_t *outBuffer);
  93
  94 int rijndael_blockDecrypt(cipherInstance *cipher, keyInstance *key,
  95         u_int8_t *input, int inputLen, u_int8_t *outBuffer);
  96
  97 int rijndael_padDecrypt(cipherInstance *cipher, keyInstance *key,
  98                 u_int8_t *input, int inputOctets, u_int8_t *outBuffer);
  99
 100 #ifdef INTERMEDIATE_VALUE_KAT
 101 int rijndael_cipherUpdateRounds(cipherInstance *cipher, keyInstance *key,
 102         u_int8_t *input, int inputLen, u_int8_t *outBuffer, int Rounds);
 103 #endif /* INTERMEDIATE_VALUE_KAT */
 104
 105 #endif /*  __RIJNDAEL_API_FST_H */