+++ /dev/null
-/* $OpenBSD: i_cbc.c,v 1.6 2023/07/08 10:44:00 beck Exp $ */
-/* 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 <openssl/idea.h>
-#include "idea_local.h"
-
-void
-idea_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
- IDEA_KEY_SCHEDULE *ks, unsigned char *iv, int encrypt)
-{
- unsigned long tin0, tin1;
- unsigned long tout0, tout1, xor0, xor1;
- long l = length;
- unsigned long tin[2];
-
- if (encrypt) {
- n2l(iv, tout0);
- n2l(iv, tout1);
- iv -= 8;
- for (l -= 8; l >= 0; l -= 8)
- {
- n2l(in, tin0);
- n2l(in, tin1);
- tin0 ^= tout0;
- tin1 ^= tout1;
- tin[0] = tin0;
- tin[1] = tin1;
- idea_encrypt(tin, ks);
- tout0 = tin[0];
- l2n(tout0, out);
- tout1 = tin[1];
- l2n(tout1, out);
- }
- if (l != -8) {
- n2ln(in, tin0, tin1, l + 8);
- tin0 ^= tout0;
- tin1 ^= tout1;
- tin[0] = tin0;
- tin[1] = tin1;
- idea_encrypt(tin, ks);
- tout0 = tin[0];
- l2n(tout0, out);
- tout1 = tin[1];
- l2n(tout1, out);
- }
- l2n(tout0, iv);
- l2n(tout1, iv);
- } else {
- n2l(iv, xor0);
- n2l(iv, xor1);
- iv -= 8;
- for (l -= 8; l >= 0; l -= 8)
- {
- n2l(in, tin0);
- tin[0] = tin0;
- n2l(in, tin1);
- tin[1] = tin1;
- idea_encrypt(tin, ks);
- tout0 = tin[0] ^ xor0;
- tout1 = tin[1] ^ xor1;
- l2n(tout0, out);
- l2n(tout1, out);
- xor0 = tin0;
- xor1 = tin1;
- }
- if (l != -8) {
- n2l(in, tin0);
- tin[0] = tin0;
- n2l(in, tin1);
- tin[1] = tin1;
- idea_encrypt(tin, ks);
- tout0 = tin[0] ^ xor0;
- tout1 = tin[1] ^ xor1;
- l2nn(tout0, tout1, out, l + 8);
- xor0 = tin0;
- xor1 = tin1;
- }
- l2n(xor0, iv);
- l2n(xor1, iv);
- }
- tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0;
- tin[0] = tin[1] = 0;
-}
-LCRYPTO_ALIAS(idea_cbc_encrypt);
-
-void
-idea_encrypt(unsigned long *d, IDEA_KEY_SCHEDULE *key)
-{
- IDEA_INT *p;
- unsigned long x1, x2, x3, x4, t0, t1, ul;
-
- x2 = d[0];
- x1 = (x2 >> 16);
- x4 = d[1];
- x3 = (x4 >> 16);
-
- p = &(key->data[0][0]);
-
- E_IDEA(0);
- E_IDEA(1);
- E_IDEA(2);
- E_IDEA(3);
- E_IDEA(4);
- E_IDEA(5);
- E_IDEA(6);
- E_IDEA(7);
-
- x1 &= 0xffff;
- idea_mul(x1, x1, *p, ul);
- p++;
-
- t0 = x3 + *(p++);
- t1 = x2 + *(p++);
-
- x4 &= 0xffff;
- idea_mul(x4, x4, *p, ul);
-
- d[0] = (t0 & 0xffff)|((x1 & 0xffff) << 16);
- d[1] = (x4 & 0xffff)|((t1 & 0xffff) << 16);
-}
-LCRYPTO_ALIAS(idea_encrypt);
projects / openbsd / commitdiff