OSX/libsecurity_cryptkit/lib/ckDES.h

   1 /* Copyright (c) 1998,2011,2014 Apple Inc.  All Rights Reserved.
   2  *
   3  * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
   4  * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
   5  * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
   6  * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
   7  * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
   8  * EXPOSE YOU TO LIABILITY.
   9  ***************************************************************************
  10  *
  11  * DES.h - raw DES encryption engine interface
  12  *
  13  * Revision History
  14  * ----------------
  15  * 31 Mar 97 at Apple
  16  *      Put per-instance data in struct _desInst
  17  * 21 Aug 96 at NeXT
  18  *      Broke out from NSDESCryptor.m
  19  * 22 Feb 96 at NeXT
  20  *      Created.
  21  */
  22
  23 #ifndef _CK_DES_H_
  24 #define _CK_DES_H_
  25
  26 #include "ckconfig.h"
  27
  28 #if CRYPTKIT_SYMMETRIC_ENABLE
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #define DES_BLOCK_SIZE_BYTES            8       /* in bytes */
  35 #define DES_KEY_SIZE_BITS                       56      /* effective key size in bits */
  36 #define DES_KEY_SIZE_BITS_EXTERNAL      64      /* clients actually pass in this much */
  37 #define DES_KEY_SIZE_BYTES_EXTERNAL     (DES_KEY_SIZE_BITS_EXTERNAL / 8)
  38
  39 #define DES_MODE_STD    0       /* standard Data Encryption Algorithm */
  40 #define DES_MODE_FAST   1       /* DEA without initial and final */
  41                                 /*    permutations for speed */
  42 #define DES_MODE_128    2       /* DEA without permutations and with */
  43                                 /*    128-byte key (completely independent */
  44                                 /*    subkeys for each round) */
  45
  46 /*
  47  * Per-instance data.
  48  */
  49 struct _desInst {
  50         /* 8 16-bit subkeys for each of 16 rounds, initialized by setkey()
  51          */
  52         unsigned char kn[16][8];
  53         int desmode;
  54 };
  55
  56 typedef struct _desInst *desInst;
  57
  58 int desinit(desInst dinst, int mode);
  59 void dessetkey(desInst dinst, char *key);
  60 void endes(desInst dinst, char *block);
  61 void dedes(desInst dinst, char *block);
  62 void desdone(desInst dinst);
  63
  64 #ifdef __cplusplus
  65 }
  66 #endif
  67
  68 #endif  /* CRYPTKIT_SYMMETRIC_ENABLE */
  69
  70 #endif  /*_CK_DES_H_*/