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Diffstat (limited to 'thirdparty/openssl/crypto/des/str2key.c')
-rw-r--r--thirdparty/openssl/crypto/des/str2key.c164
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diff --git a/thirdparty/openssl/crypto/des/str2key.c b/thirdparty/openssl/crypto/des/str2key.c
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--- a/thirdparty/openssl/crypto/des/str2key.c
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-/* crypto/des/str2key.c */
-/* 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/crypto.h>
-#include "des_locl.h"
-
-void DES_string_to_key(const char *str, DES_cblock *key)
-{
- DES_key_schedule ks;
- int i, length;
- register unsigned char j;
-
- memset(key, 0, 8);
- length = strlen(str);
-#ifdef OLD_STR_TO_KEY
- for (i = 0; i < length; i++)
- (*key)[i % 8] ^= (str[i] << 1);
-#else /* MIT COMPATIBLE */
- for (i = 0; i < length; i++) {
- j = str[i];
- if ((i % 16) < 8)
- (*key)[i % 8] ^= (j << 1);
- else {
- /* Reverse the bit order 05/05/92 eay */
- j = ((j << 4) & 0xf0) | ((j >> 4) & 0x0f);
- j = ((j << 2) & 0xcc) | ((j >> 2) & 0x33);
- j = ((j << 1) & 0xaa) | ((j >> 1) & 0x55);
- (*key)[7 - (i % 8)] ^= j;
- }
- }
-#endif
- DES_set_odd_parity(key);
-#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
- if (DES_is_weak_key(key))
- (*key)[7] ^= 0xF0;
- DES_set_key(key, &ks);
-#else
- DES_set_key_unchecked(key, &ks);
-#endif
- DES_cbc_cksum((const unsigned char *)str, key, length, &ks, key);
- OPENSSL_cleanse(&ks, sizeof(ks));
- DES_set_odd_parity(key);
-}
-
-void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2)
-{
- DES_key_schedule ks;
- int i, length;
- register unsigned char j;
-
- memset(key1, 0, 8);
- memset(key2, 0, 8);
- length = strlen(str);
-#ifdef OLD_STR_TO_KEY
- if (length <= 8) {
- for (i = 0; i < length; i++) {
- (*key2)[i] = (*key1)[i] = (str[i] << 1);
- }
- } else {
- for (i = 0; i < length; i++) {
- if ((i / 8) & 1)
- (*key2)[i % 8] ^= (str[i] << 1);
- else
- (*key1)[i % 8] ^= (str[i] << 1);
- }
- }
-#else /* MIT COMPATIBLE */
- for (i = 0; i < length; i++) {
- j = str[i];
- if ((i % 32) < 16) {
- if ((i % 16) < 8)
- (*key1)[i % 8] ^= (j << 1);
- else
- (*key2)[i % 8] ^= (j << 1);
- } else {
- j = ((j << 4) & 0xf0) | ((j >> 4) & 0x0f);
- j = ((j << 2) & 0xcc) | ((j >> 2) & 0x33);
- j = ((j << 1) & 0xaa) | ((j >> 1) & 0x55);
- if ((i % 16) < 8)
- (*key1)[7 - (i % 8)] ^= j;
- else
- (*key2)[7 - (i % 8)] ^= j;
- }
- }
- if (length <= 8)
- memcpy(key2, key1, 8);
-#endif
- DES_set_odd_parity(key1);
- DES_set_odd_parity(key2);
-#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
- if (DES_is_weak_key(key1))
- (*key1)[7] ^= 0xF0;
- DES_set_key(key1, &ks);
-#else
- DES_set_key_unchecked(key1, &ks);
-#endif
- DES_cbc_cksum((const unsigned char *)str, key1, length, &ks, key1);
-#ifdef EXPERIMENTAL_STR_TO_STRONG_KEY
- if (DES_is_weak_key(key2))
- (*key2)[7] ^= 0xF0;
- DES_set_key(key2, &ks);
-#else
- DES_set_key_unchecked(key2, &ks);
-#endif
- DES_cbc_cksum((const unsigned char *)str, key2, length, &ks, key2);
- OPENSSL_cleanse(&ks, sizeof(ks));
- DES_set_odd_parity(key1);
- DES_set_odd_parity(key2);
-}
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