crypto/des/ecb_enc.c

   1 /*
   2  * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include "des_locl.h"
  11 #include <openssl/opensslv.h>
  12 #include <openssl/bio.h>
  13
  14
  15 const char *DES_options(void)
  16 {
  17     static int init = 1;
  18     static char buf[12];
  19
  20     if (init) {
  21         if (sizeof(DES_LONG) != sizeof(long))
  22             OPENSSL_strlcpy(buf, "des(int)", sizeof(buf));
  23         else
  24             OPENSSL_strlcpy(buf, "des(long)", sizeof(buf));
  25         init = 0;
  26     }
  27     return buf;
  28 }
  29
  30 void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
  31                      DES_key_schedule *ks, int enc)
  32 {
  33     register DES_LONG l;
  34     DES_LONG ll[2];
  35     const unsigned char *in = &(*input)[0];
  36     unsigned char *out = &(*output)[0];
  37
  38     c2l(in, l);
  39     ll[0] = l;
  40     c2l(in, l);
  41     ll[1] = l;
  42     DES_encrypt1(ll, ks, enc);
  43     l = ll[0];
  44     l2c(l, out);
  45     l = ll[1];
  46     l2c(l, out);
  47     l = ll[0] = ll[1] = 0;
  48 }