SecurityTests/cspxutils/utilLib/rijndaelApi.h

   1 /*
   2  * rijndaelApi.h  -  AES API layer
   3  *
   4  * Based on rijndael-api-ref.h v2.0 written by Paulo Barreto
   5  * and Vincent Rijmen
   6  */
   7
   8 #ifndef _RIJNDAEL_API_REF_H_
   9 #define _RIJNDAEL_API_REF_H_
  10
  11 #include <stdio.h>
  12 #include "rijndael-alg-ref.h"
  13
  14 #ifdef  __cplusplus
  15 extern "C" {
  16 #endif
  17
  18 #define     DIR_ENCRYPT     0    /*  Are we encrpyting?  */
  19 #define     DIR_DECRYPT     1    /*  Are we decrpyting?  */
  20 #define     MODE_ECB        1    /*  Are we ciphering in ECB mode?   */
  21 #define     MODE_CBC        2    /*  Are we ciphering in CBC mode?   */
  22
  23 #define     TRUE            1
  24 #define     FALSE           0
  25
  26 /*  Error Codes  */
  27 #define     BAD_KEY_DIR        -1  /*  Key direction is invalid, e.g.,
  28                                                                            unknown value */
  29 #define     BAD_KEY_MAT        -2  /*  Key material not of correct
  30                                                                            length */
  31 #define     BAD_KEY_INSTANCE   -3  /*  Key passed is not valid  */
  32 #define     BAD_CIPHER_MODE    -4  /*  Params struct passed to
  33                                                                            cipherInit invalid */
  34 #define     BAD_CIPHER_STATE   -5  /*  Cipher in wrong state (e.g., not
  35                                                                            initialized) */
  36 #define     BAD_CIPHER_INSTANCE   -7
  37
  38 #define     MAX_AES_KEY_SIZE    (MAX_AES_KEY_BITS / 8)
  39 #define         MAX_AES_BLOCK_SIZE      (MAX_AES_BLOCK_BITS / 8)
  40 #define     MAX_AES_IV_SIZE             MAX_AES_BLOCK_SIZE
  41
  42 typedef    unsigned char    BYTE;
  43
  44 /*  The structure for key information */
  45 typedef struct {
  46       BYTE  direction;  /* Key used for encrypting or decrypting? */
  47       int   keyLen;             /* Length of the key in bits */
  48       int   blockLen;   /* Length of block in bits */
  49       word8 keySched[MAXROUNDS+1][4][MAXBC];    /* key schedule         */
  50       } keyInstance;
  51
  52 /*  The structure for cipher information */
  53 typedef struct {
  54       BYTE  mode;           /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
  55           word8 chainBlock[4][MAXBC];
  56           int   blockLen;       /* block length in bits */
  57       } cipherInstance;
  58
  59
  60 int _makeKey(
  61         keyInstance *key,
  62         BYTE direction,
  63         int keyLen,             // in BITS
  64         int blockLen,           // in BITS
  65         BYTE *keyMaterial);
  66
  67 int _cipherInit(
  68         cipherInstance *cipher,
  69         BYTE mode,
  70         int blockLen,           // in BITS
  71         BYTE *IV);
  72
  73 int _blockEncrypt(
  74         cipherInstance *cipher,
  75         keyInstance *key,
  76         BYTE *input,
  77         int inputLen,           // in BITS
  78         BYTE *outBuffer);
  79
  80 int _blockDecrypt(
  81         cipherInstance *cipher,
  82         keyInstance *key,
  83         BYTE *input,
  84         int inputLen,           // in BITS
  85         BYTE *outBuffer);
  86
  87 /*
  88  * Apple addenda 3/28/2001: simplified single-block encrypt/decrypt.
  89  * Used when chaining and padding is done in elsewhere.
  90  */
  91 int _rijndaelBlockEncrypt(
  92         cipherInstance *cipher,
  93         keyInstance *key,
  94         BYTE *input,
  95         BYTE *outBuffer);
  96 int _rijndaelBlockDecrypt(
  97         cipherInstance *cipher,
  98         keyInstance *key,
  99         BYTE *input,
 100         BYTE *outBuffer);
 101
 102 #ifdef  __cplusplus
 103 }
 104 #endif  // cplusplus
 105
 106 #endif  // RIJNDAEL_API_REF
 107
 108