AppleCSP/AES/rijndaelApi.h

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /*
  20  * rijndaelApi.h  -  AES API layer
  21  *
  22  * Based on rijndael-api-ref.h v2.0 written by Paulo Barreto
  23  * and Vincent Rijmen
  24  */
  25
  26 #ifndef _RIJNDAEL_API_REF_H_
  27 #define _RIJNDAEL_API_REF_H_
  28
  29 #include <stdio.h>
  30 #include "rijndael-alg-ref.h"
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*  Error Codes  */
  37 #define     BAD_KEY_MAT        -1  /*  Key material not of correct
  38                                                                            length */
  39 #define     BAD_KEY_INSTANCE   -2  /*  Key passed is not valid  */
  40
  41 #define     MAX_AES_KEY_SIZE    (MAX_AES_KEY_BITS / 8)
  42 #define         MAX_AES_BLOCK_SIZE      (MAX_AES_BLOCK_BITS / 8)
  43 #define     MAX_AES_IV_SIZE             MAX_AES_BLOCK_SIZE
  44
  45 #define         TRUE            1
  46 #define         FALSE           0
  47
  48 /*  The structure for key information */
  49 typedef struct {
  50         word32                  keyLen;         /* Length of the key in bits */
  51         word32                  blockLen;   /* Length of block in bits */
  52         word32                  columns;        /* optimization, blockLen / 32 */
  53         word8                   keySched[MAXROUNDS+1][4][MAXBC];
  54 } keyInstance;
  55
  56 int makeKey(
  57         keyInstance *key,
  58         int keyLen,             // in BITS
  59         int blockLen,           // in BITS
  60         word8 *keyMaterial,
  61         int enable128Opt);
  62
  63 /*
  64  * Simplified single-block encrypt/decrypt.
  65  */
  66 int rijndaelBlockEncrypt(
  67         keyInstance *key,
  68         word8 *input,
  69         word8 *outBuffer);
  70 int rijndaelBlockDecrypt(
  71         keyInstance *key,
  72         word8 *input,
  73         word8 *outBuffer);
  74
  75 /*
  76  * Optimized routines for 128 bit block and 128 bit key.
  77  */
  78 int rijndaelBlockEncrypt128(
  79         keyInstance     *key,
  80         word8                   *input,
  81         word8                   *outBuffer);
  82 int rijndaelBlockDecrypt128(
  83         keyInstance     *key,
  84         word8                   *input,
  85         word8                   *outBuffer);
  86
  87 #ifdef  __ppc__
  88 /*
  89  * dmitch addenda 4/11/2001: 128-bit only vectorized encrypt/decrypt with no CBC
  90  */
  91 void vBlockEncrypt128(
  92         keyInstance *key,
  93         word8 *input,
  94         word8 *outBuffer);
  95 void vBlockDecrypt128(
  96         keyInstance *key,
  97         word8 *input,
  98         word8 *outBuffer);
  99 #endif  __ppc__
 100
 101 /* temp switch for runtime enable/disable */
 102 extern int doAES128;
 103
 104 /* ptr to one of several (possibly optimized) encrypt/decrypt functions */
 105 typedef int (*aesCryptFcn)(
 106         keyInstance *key,
 107         word8 *input,
 108         word8 *outBuffer);
 109
 110 #ifdef  __cplusplus
 111 }
 112 #endif  // cplusplus
 113
 114 #endif  // RIJNDAEL_API_REF
 115
 116