+++ /dev/null
-/* $OpenBSD: ncbc_enc.c,v 1.11 2024/03/29 01:47:29 joshua Exp $ */
-/*
- * #included by:
- * cbc_enc.c (DES_cbc_encrypt)
- * des_enc.c (DES_ncbc_encrypt)
- */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-#include "des_local.h"
-
-#ifdef CBC_ENC_C__DONT_UPDATE_IV
-void
-DES_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
- DES_key_schedule *_schedule, DES_cblock *ivec, int enc)
-#else
-void
-DES_ncbc_encrypt(const unsigned char *in, unsigned char *out, long length,
- DES_key_schedule *_schedule, DES_cblock *ivec, int enc)
-#endif
-{
- DES_LONG tin0, tin1;
- DES_LONG tout0, tout1, xor0, xor1;
- long l = length;
- DES_LONG tin[2];
- unsigned char *iv;
-
- iv = &(*ivec)[0];
-
- if (enc) {
- c2l(iv, tout0);
- c2l(iv, tout1);
- for (l -= 8; l >= 0; l -= 8) {
- c2l(in, tin0);
- c2l(in, tin1);
- tin0 ^= tout0;
- tin[0] = tin0;
- tin1 ^= tout1;
- tin[1] = tin1;
- DES_encrypt1((DES_LONG *)tin, _schedule, DES_ENCRYPT);
- tout0 = tin[0];
- l2c(tout0, out);
- tout1 = tin[1];
- l2c(tout1, out);
- }
- if (l != -8) {
- c2ln(in, tin0, tin1, l + 8);
- tin0 ^= tout0;
- tin[0] = tin0;
- tin1 ^= tout1;
- tin[1] = tin1;
- DES_encrypt1((DES_LONG *)tin, _schedule, DES_ENCRYPT);
- tout0 = tin[0];
- l2c(tout0, out);
- tout1 = tin[1];
- l2c(tout1, out);
- }
-#ifndef CBC_ENC_C__DONT_UPDATE_IV
- iv = &(*ivec)[0];
- l2c(tout0, iv);
- l2c(tout1, iv);
-#endif
- } else {
- c2l(iv, xor0);
- c2l(iv, xor1);
- for (l -= 8; l >= 0; l -= 8) {
- c2l(in, tin0);
- tin[0] = tin0;
- c2l(in, tin1);
- tin[1] = tin1;
- DES_encrypt1((DES_LONG *)tin, _schedule, DES_DECRYPT);
- tout0 = tin[0] ^ xor0;
- tout1 = tin[1] ^ xor1;
- l2c(tout0, out);
- l2c(tout1, out);
- xor0 = tin0;
- xor1 = tin1;
- }
- if (l != -8) {
- c2l(in, tin0);
- tin[0] = tin0;
- c2l(in, tin1);
- tin[1] = tin1;
- DES_encrypt1((DES_LONG *)tin, _schedule, DES_DECRYPT);
- tout0 = tin[0] ^ xor0;
- tout1 = tin[1] ^ xor1;
- l2cn(tout0, tout1, out, l + 8);
-#ifndef CBC_ENC_C__DONT_UPDATE_IV
- xor0 = tin0;
- xor1 = tin1;
-#endif
- }
-#ifndef CBC_ENC_C__DONT_UPDATE_IV
- iv = &(*ivec)[0];
- l2c(xor0, iv);
- l2c(xor1, iv);
-#endif
- }
- tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
- tin[0] = tin[1] = 0;
-}
-#ifdef CBC_ENC_C__DONT_UPDATE_IV
-LCRYPTO_ALIAS(DES_cbc_encrypt);
-#else
-LCRYPTO_ALIAS(DES_ncbc_encrypt);
-#endif
projects / openbsd / commitdiff