crypto/des/ecb3_enc.c

   1 /*
   2  * Copyright 1995-2016 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_local.h"
  11
  12 void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output,
  13                       DES_key_schedule *ks1, DES_key_schedule *ks2,
  14                       DES_key_schedule *ks3, int enc)
  15 {
  16     register DES_LONG l0, l1;
  17     DES_LONG ll[2];
  18     const unsigned char *in = &(*input)[0];
  19     unsigned char *out = &(*output)[0];
  20
  21     c2l(in, l0);
  22     c2l(in, l1);
  23     ll[0] = l0;
  24     ll[1] = l1;
  25     if (enc)
  26         DES_encrypt3(ll, ks1, ks2, ks3);
  27     else
  28         DES_decrypt3(ll, ks1, ks2, ks3);
  29     l0 = ll[0];
  30     l1 = ll[1];
  31     l2c(l0, out);
  32     l2c(l1, out);
  33 }