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 DES_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(struct ccmode_ecb)) + ccn_sizeof_size(CCDES_BLOCK_SIZE) + ccn_sizeof_size(DES_ECB_CTX_MAX_SIZE))
  48 #define DES3_ECB_CTX_MAX_SIZE (64*4*3)
  49 #define DES3_CBC_CTX_MAX_SIZE (ccn_sizeof_size(sizeof(struct ccmode_ecb)) + ccn_sizeof_size(CCDES_BLOCK_SIZE) + ccn_sizeof_size(DES3_ECB_CTX_MAX_SIZE))
  50
  51
  52 typedef struct{
  53         ccecb_ctx_decl(DES_ECB_CTX_MAX_SIZE, enc);
  54         ccecb_ctx_decl(DES_ECB_CTX_MAX_SIZE, dec);
  55 } des_ecb_key_schedule;
  56
  57 typedef struct{
  58         cccbc_ctx_decl(DES_CBC_CTX_MAX_SIZE, enc);
  59         cccbc_ctx_decl(DES_CBC_CTX_MAX_SIZE, dec);
  60 } des_cbc_key_schedule;
  61
  62 typedef struct{
  63         ccecb_ctx_decl(DES3_ECB_CTX_MAX_SIZE, enc);
  64         ccecb_ctx_decl(DES3_ECB_CTX_MAX_SIZE, dec);
  65 } des3_ecb_key_schedule;
  66
  67 typedef struct{
  68         cccbc_ctx_decl(DES3_CBC_CTX_MAX_SIZE, enc);
  69         cccbc_ctx_decl(DES3_CBC_CTX_MAX_SIZE, dec);
  70 } des3_cbc_key_schedule;
  71
  72 /* Only here for backward compatibility with smb kext */
  73 typedef des_ecb_key_schedule des_key_schedule[1];
  74 #define des_set_key des_ecb_key_sched
  75
  76 #define DES_ENCRYPT     1
  77 #define DES_DECRYPT     0
  78
  79
  80 /* Single DES ECB - 1 block */
  81 int des_ecb_key_sched(des_cblock *key, des_ecb_key_schedule *ks);
  82 void des_ecb_encrypt(des_cblock *in, des_cblock *out, des_ecb_key_schedule *ks, int encrypt);
  83
  84 /* Triple DES ECB - 1 block */
  85 int des3_ecb_key_sched(des_cblock *key, des3_ecb_key_schedule *ks);
  86 void des3_ecb_encrypt(des_cblock *block, des_cblock *, des3_ecb_key_schedule *ks, int encrypt);
  87
  88 /* Single DES CBC */
  89 int des_cbc_key_sched(des_cblock *key, des_cbc_key_schedule *ks);
  90 void des_cbc_encrypt(des_cblock *in, des_cblock *out, int32_t len,
  91                                          des_cbc_key_schedule *ks, des_cblock *iv, des_cblock *retiv, int encrypt);
  92
  93 /* Triple DES CBC */
  94 int des3_cbc_key_sched(des_cblock *key, des3_cbc_key_schedule *ks);
  95 void des3_cbc_encrypt(des_cblock *in, des_cblock *out, int32_t len,
  96                                           des3_cbc_key_schedule *ks, des_cblock *iv, des_cblock *retiv, int encrypt);
  97
  98 /* Single DES CBC-MAC */
  99 void des_cbc_cksum(des_cblock *in, des_cblock *out, int len, des_cbc_key_schedule *ks);
 100
 101 void des_fixup_key_parity(des_cblock *key);
 102 int des_is_weak_key(des_cblock *key);
 103 // int des_set_key(des_cblock *, des_key_schedule); // Unsupported KPI.
 104
 105 #ifdef  __cplusplus
 106 }
 107 #endif
 108
 109 #endif