include/openssl/des.h

   1 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57
  58 #ifndef HEADER_NEW_DES_H
  59 # define HEADER_NEW_DES_H
  60
  61 # include <openssl/e_os2.h>     /* OPENSSL_EXTERN, OPENSSL_NO_DES, DES_LONG
  62                                  * (via openssl/opensslconf.h */
  63
  64 # ifdef OPENSSL_NO_DES
  65 #  error DES is disabled.
  66 # endif
  67
  68 # define DES_LONG OSSL_DES_LONG
  69
  70 # ifdef OPENSSL_BUILD_SHLIBCRYPTO
  71 #  undef OPENSSL_EXTERN
  72 #  define OPENSSL_EXTERN OPENSSL_EXPORT
  73 # endif
  74
  75 #ifdef  __cplusplus
  76 extern "C" {
  77 #endif
  78
  79 typedef unsigned char DES_cblock[8];
  80 typedef /* const */ unsigned char const_DES_cblock[8];
  81 /*
  82  * With "const", gcc 2.8.1 on Solaris thinks that DES_cblock * and
  83  * const_DES_cblock * are incompatible pointer types.
  84  */
  85
  86 typedef struct DES_ks {
  87     union {
  88         DES_cblock cblock;
  89         /*
  90          * make sure things are correct size on machines with 8 byte longs
  91          */
  92         DES_LONG deslong[2];
  93     } ks[16];
  94 } DES_key_schedule;
  95
  96 # define DES_KEY_SZ      (sizeof(DES_cblock))
  97 # define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
  98
  99 # define DES_ENCRYPT     1
 100 # define DES_DECRYPT     0
 101
 102 # define DES_CBC_MODE    0
 103 # define DES_PCBC_MODE   1
 104
 105 # define DES_ecb2_encrypt(i,o,k1,k2,e) \
 106         DES_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
 107
 108 # define DES_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
 109         DES_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
 110
 111 # define DES_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
 112         DES_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
 113
 114 # define DES_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
 115         DES_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
 116
 117 OPENSSL_DECLARE_GLOBAL(int, DES_check_key); /* defaults to false */
 118 # define DES_check_key OPENSSL_GLOBAL_REF(DES_check_key)
 119 OPENSSL_DECLARE_GLOBAL(int, DES_rw_mode); /* defaults to DES_PCBC_MODE */
 120 # define DES_rw_mode OPENSSL_GLOBAL_REF(DES_rw_mode)
 121
 122 const char *DES_options(void);
 123 void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output,
 124                       DES_key_schedule *ks1, DES_key_schedule *ks2,
 125                       DES_key_schedule *ks3, int enc);
 126 DES_LONG DES_cbc_cksum(const unsigned char *input, DES_cblock *output,
 127                        long length, DES_key_schedule *schedule,
 128                        const_DES_cblock *ivec);
 129 /* DES_cbc_encrypt does not update the IV!  Use DES_ncbc_encrypt instead. */
 130 void DES_cbc_encrypt(const unsigned char *input, unsigned char *output,
 131                      long length, DES_key_schedule *schedule,
 132                      DES_cblock *ivec, int enc);
 133 void DES_ncbc_encrypt(const unsigned char *input, unsigned char *output,
 134                       long length, DES_key_schedule *schedule,
 135                       DES_cblock *ivec, int enc);
 136 void DES_xcbc_encrypt(const unsigned char *input, unsigned char *output,
 137                       long length, DES_key_schedule *schedule,
 138                       DES_cblock *ivec, const_DES_cblock *inw,
 139                       const_DES_cblock *outw, int enc);
 140 void DES_cfb_encrypt(const unsigned char *in, unsigned char *out, int numbits,
 141                      long length, DES_key_schedule *schedule,
 142                      DES_cblock *ivec, int enc);
 143 void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
 144                      DES_key_schedule *ks, int enc);
 145
 146 /*
 147  * This is the DES encryption function that gets called by just about every
 148  * other DES routine in the library.  You should not use this function except
 149  * to implement 'modes' of DES.  I say this because the functions that call
 150  * this routine do the conversion from 'char *' to long, and this needs to be
 151  * done to make sure 'non-aligned' memory access do not occur.  The
 152  * characters are loaded 'little endian'. Data is a pointer to 2 unsigned
 153  * long's and ks is the DES_key_schedule to use.  enc, is non zero specifies
 154  * encryption, zero if decryption.
 155  */
 156 void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc);
 157
 158 /*
 159  * This functions is the same as DES_encrypt1() except that the DES initial
 160  * permutation (IP) and final permutation (FP) have been left out.  As for
 161  * DES_encrypt1(), you should not use this function. It is used by the
 162  * routines in the library that implement triple DES. IP() DES_encrypt2()
 163  * DES_encrypt2() DES_encrypt2() FP() is the same as DES_encrypt1()
 164  * DES_encrypt1() DES_encrypt1() except faster :-).
 165  */
 166 void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc);
 167
 168 void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
 169                   DES_key_schedule *ks2, DES_key_schedule *ks3);
 170 void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
 171                   DES_key_schedule *ks2, DES_key_schedule *ks3);
 172 void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
 173                           long length,
 174                           DES_key_schedule *ks1, DES_key_schedule *ks2,
 175                           DES_key_schedule *ks3, DES_cblock *ivec, int enc);
 176 void DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out,
 177                             long length, DES_key_schedule *ks1,
 178                             DES_key_schedule *ks2, DES_key_schedule *ks3,
 179                             DES_cblock *ivec, int *num, int enc);
 180 void DES_ede3_cfb_encrypt(const unsigned char *in, unsigned char *out,
 181                           int numbits, long length, DES_key_schedule *ks1,
 182                           DES_key_schedule *ks2, DES_key_schedule *ks3,
 183                           DES_cblock *ivec, int enc);
 184 void DES_ede3_ofb64_encrypt(const unsigned char *in, unsigned char *out,
 185                             long length, DES_key_schedule *ks1,
 186                             DES_key_schedule *ks2, DES_key_schedule *ks3,
 187                             DES_cblock *ivec, int *num);
 188 int DES_enc_read(int fd, void *buf, int len, DES_key_schedule *sched,
 189                  DES_cblock *iv);
 190 int DES_enc_write(int fd, const void *buf, int len, DES_key_schedule *sched,
 191                   DES_cblock *iv);
 192 char *DES_fcrypt(const char *buf, const char *salt, char *ret);
 193 char *DES_crypt(const char *buf, const char *salt);
 194 void DES_ofb_encrypt(const unsigned char *in, unsigned char *out, int numbits,
 195                      long length, DES_key_schedule *schedule,
 196                      DES_cblock *ivec);
 197 void DES_pcbc_encrypt(const unsigned char *input, unsigned char *output,
 198                       long length, DES_key_schedule *schedule,
 199                       DES_cblock *ivec, int enc);
 200 DES_LONG DES_quad_cksum(const unsigned char *input, DES_cblock output[],
 201                         long length, int out_count, DES_cblock *seed);
 202 int DES_random_key(DES_cblock *ret);
 203 void DES_set_odd_parity(DES_cblock *key);
 204 int DES_check_key_parity(const_DES_cblock *key);
 205 int DES_is_weak_key(const_DES_cblock *key);
 206 /*
 207  * DES_set_key (= set_key = DES_key_sched = key_sched) calls
 208  * DES_set_key_checked if global variable DES_check_key is set,
 209  * DES_set_key_unchecked otherwise.
 210  */
 211 int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule);
 212 int DES_key_sched(const_DES_cblock *key, DES_key_schedule *schedule);
 213 int DES_set_key_checked(const_DES_cblock *key, DES_key_schedule *schedule);
 214 void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule);
 215 void DES_string_to_key(const char *str, DES_cblock *key);
 216 void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2);
 217 void DES_cfb64_encrypt(const unsigned char *in, unsigned char *out,
 218                        long length, DES_key_schedule *schedule,
 219                        DES_cblock *ivec, int *num, int enc);
 220 void DES_ofb64_encrypt(const unsigned char *in, unsigned char *out,
 221                        long length, DES_key_schedule *schedule,
 222                        DES_cblock *ivec, int *num);
 223
 224 int DES_read_password(DES_cblock *key, const char *prompt, int verify);
 225 int DES_read_2passwords(DES_cblock *key1, DES_cblock *key2,
 226                         const char *prompt, int verify);
 227
 228 # define DES_fixup_key_parity DES_set_odd_parity
 229
 230 #ifdef  __cplusplus
 231 }
 232 #endif
 233
 234 #endif