crypto/rc2/rc2_ecb.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 <openssl/rc2.h>
  11 #include "rc2_local.h"
  12 #include <openssl/opensslv.h>
  13
  14 /*-
  15  * RC2 as implemented frm a posting from
  16  * Newsgroups: sci.crypt
  17  * Subject: Specification for Ron Rivests Cipher No.2
  18  * Message-ID: <4fk39f$f70@net.auckland.ac.nz>
  19  * Date: 11 Feb 1996 06:45:03 GMT
  20  */
  21
  22 void RC2_ecb_encrypt(const unsigned char *in, unsigned char *out, RC2_KEY *ks,
  23                      int encrypt)
  24 {
  25     unsigned long l, d[2];
  26
  27     c2l(in, l);
  28     d[0] = l;
  29     c2l(in, l);
  30     d[1] = l;
  31     if (encrypt)
  32         RC2_encrypt(d, ks);
  33     else
  34         RC2_decrypt(d, ks);
  35     l = d[0];
  36     l2c(l, out);
  37     l = d[1];
  38     l2c(l, out);
  39     l = d[0] = d[1] = 0;
  40 }