crypto/des/ecb_enc.c

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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[32];
  19
  20     if (init) {
  21         const char *size;
  22
  23         if (sizeof(DES_LONG) != sizeof(long))
  24             size = "int";
  25         else
  26             size = "long";
  27         BIO_snprintf(buf, sizeof buf, "des(%s)", size);
  28         init = 0;
  29     }
  30     return (buf);
  31 }
  32
  33 void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
  34                      DES_key_schedule *ks, int enc)
  35 {
  36     register DES_LONG l;
  37     DES_LONG ll[2];
  38     const unsigned char *in = &(*input)[0];
  39     unsigned char *out = &(*output)[0];
  40
  41     c2l(in, l);
  42     ll[0] = l;
  43     c2l(in, l);
  44     ll[1] = l;
  45     DES_encrypt1(ll, ks, enc);
  46     l = ll[0];
  47     l2c(l, out);
  48     l = ll[1];
  49     l2c(l, out);
  50     l = ll[0] = ll[1] = 0;
  51 }