libkern/libkern/crypto/des.h

   1 /*
   2  * Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #ifndef _CRYPTO_DES_H
  30 #define _CRYPTO_DES_H
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #include <corecrypto/ccmode.h>
  37 #include <corecrypto/ccdes.h>
  38 #include <corecrypto/ccn.h>
  39
  40 /* must be 32bit quantity */
  41 #define DES_LONG u_int32_t
  42
  43 typedef unsigned char des_cblock[8];
  44
  45 /* Unholy hack: this is currently the size for the only implementation of DES in corecrypto */
  46 #define DES_ECB_CTX_MAX_SIZE (64*4)
  47 #define DES3_ECB_CTX_MAX_SIZE (64*4*3)
  48
  49
  50 typedef struct{
  51         ccecb_ctx_decl(DES_ECB_CTX_MAX_SIZE, enc);
  52         ccecb_ctx_decl(DES_ECB_CTX_MAX_SIZE, dec);
  53 } des_ecb_key_schedule;
  54
  55 typedef struct{
  56         ccecb_ctx_decl(DES3_ECB_CTX_MAX_SIZE, enc);
  57         ccecb_ctx_decl(DES3_ECB_CTX_MAX_SIZE, dec);
  58 } des3_ecb_key_schedule;
  59
  60 /* Only here for backward compatibility with smb kext */
  61 typedef des_ecb_key_schedule des_key_schedule[1];
  62 #define des_set_key des_ecb_key_sched
  63
  64 #define DES_ENCRYPT     1
  65 #define DES_DECRYPT     0
  66
  67
  68 /* Single DES ECB - 1 block */
  69 int des_ecb_key_sched(des_cblock *key, des_ecb_key_schedule *ks);
  70 void des_ecb_encrypt(des_cblock * in, des_cblock *out, des_ecb_key_schedule *ks, int encrypt);
  71
  72 /* Triple DES ECB - 1 block */
  73 int des3_ecb_key_sched(des_cblock *key, des3_ecb_key_schedule *ks);
  74 void des3_ecb_encrypt(des_cblock *block, des_cblock *, des3_ecb_key_schedule *ks, int encrypt);
  75
  76 int des_is_weak_key(des_cblock *key);
  77
  78 #ifdef  __cplusplus
  79 }
  80 #endif
  81
  82 #endif