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 /*
  11  * DES low level APIs are deprecated for public use, but still ok for internal
  12  * use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include "des_local.h"
  17 #include <openssl/opensslv.h>
  18 #include <openssl/bio.h>
  19
  20
  21 const char *DES_options(void)
  22 {
  23     static int init = 1;
  24     static char buf[12];
  25
  26     if (init) {
  27         if (sizeof(DES_LONG) != sizeof(long))
  28             OPENSSL_strlcpy(buf, "des(int)", sizeof(buf));
  29         else
  30             OPENSSL_strlcpy(buf, "des(long)", sizeof(buf));
  31         init = 0;
  32     }
  33     return buf;
  34 }
  35
  36 void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
  37                      DES_key_schedule *ks, int enc)
  38 {
  39     register DES_LONG l;
  40     DES_LONG ll[2];
  41     const unsigned char *in = &(*input)[0];
  42     unsigned char *out = &(*output)[0];
  43
  44     c2l(in, l);
  45     ll[0] = l;
  46     c2l(in, l);
  47     ll[1] = l;
  48     DES_encrypt1(ll, ks, enc);
  49     l = ll[0];
  50     l2c(l, out);
  51     l = ll[1];
  52     l2c(l, out);
  53     l = ll[0] = ll[1] = 0;
  54 }