1c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* crypto/bf/bf_skey.c */
2c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * All rights reserved.
4c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *
5c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This package is an SSL implementation written
6c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * by Eric Young (eay@cryptsoft.com).
7c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The implementation was written so as to conform with Netscapes SSL.
8c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *
9c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This library is free for commercial and non-commercial use as long as
10c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the following conditions are aheared to.  The following conditions
11c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * apply to all code found in this distribution, be it the RC4, RSA,
12c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * included with this distribution is covered by the same copyright terms
14c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *
16c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Copyright remains Eric Young's, and as such any Copyright notices in
17c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * the code are not to be removed.
18c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * If this package is used in a product, Eric Young should be given attribution
19c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * as the author of the parts of the library used.
20c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * This can be in the form of a textual message at program startup or
21c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * in documentation (online or textual) provided with the package.
22c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *
23c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * Redistribution and use in source and binary forms, with or without
24c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * modification, are permitted provided that the following conditions
25c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * are met:
26c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 1. Redistributions of source code must retain the copyright
27c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    notice, this list of conditions and the following disclaimer.
28c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 2. Redistributions in binary form must reproduce the above copyright
29c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    notice, this list of conditions and the following disclaimer in the
30c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    documentation and/or other materials provided with the distribution.
31c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 3. All advertising materials mentioning features or use of this software
32c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    must display the following acknowledgement:
33c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    "This product includes cryptographic software written by
34c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *     Eric Young (eay@cryptsoft.com)"
35c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    The word 'cryptographic' can be left out if the rouines from the library
36c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    being used are not cryptographic related :-).
37c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * 4. If you include any Windows specific code (or a derivative thereof) from
38c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    the apps directory (application code) you must include an acknowledgement:
39c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *
41c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * SUCH DAMAGE.
52c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org *
53c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * The licence and distribution terms for any publically available version or
54c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * derivative of this code cannot be changed.  i.e. this code cannot simply be
55c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * copied and put under another distribution licence
56c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org * [including the GNU Public Licence.]
57c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org */
58c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
59c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <stdio.h>
60c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <string.h>
612c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org#include <openssl/crypto.h>
62c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include <openssl/blowfish.h>
63c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include "bf_locl.h"
64c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org#include "bf_pi.h"
65c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
66480da75abf485e7e2a6be5acc0f71842368792c0jnd@chromium.orgvoid BF_set_key(BF_KEY *key, int len, const unsigned char *data)
672c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org#ifdef OPENSSL_FIPS
682c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org	{
692c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org	fips_cipher_abort(BLOWFISH);
702c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org	private_BF_set_key(key, len, data);
712c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org	}
722c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.orgvoid private_BF_set_key(BF_KEY *key, int len, const unsigned char *data)
732c4508dfe2bc5b6296c01114ed11ddc64b7718c6digit@chromium.org#endif
74c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	{
75c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	int i;
76c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	BF_LONG *p,ri,in[2];
77c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	const unsigned char *d,*end;
78c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
79c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
80c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	memcpy(key,&bf_init,sizeof(BF_KEY));
81c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	p=key->P;
82c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
83c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	if (len > ((BF_ROUNDS+2)*4)) len=(BF_ROUNDS+2)*4;
84c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
85c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	d=data;
86c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	end= &(data[len]);
87c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	for (i=0; i<(BF_ROUNDS+2); i++)
88c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		{
89c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri= *(d++);
90c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		if (d >= end) d=data;
91c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
92c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri<<=8;
93c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri|= *(d++);
94c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		if (d >= end) d=data;
95c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
96c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri<<=8;
97c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri|= *(d++);
98c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		if (d >= end) d=data;
99c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
100c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri<<=8;
101c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		ri|= *(d++);
102c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		if (d >= end) d=data;
103c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
104c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		p[i]^=ri;
105c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		}
106c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
107c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	in[0]=0L;
108c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	in[1]=0L;
109c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	for (i=0; i<(BF_ROUNDS+2); i+=2)
110c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		{
111c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		BF_encrypt(in,key);
112c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		p[i  ]=in[0];
113c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		p[i+1]=in[1];
114c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		}
115c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
116c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	p=key->S;
117c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	for (i=0; i<4*256; i+=2)
118c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		{
119c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		BF_encrypt(in,key);
120c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		p[i  ]=in[0];
121c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		p[i+1]=in[1];
122c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org		}
123c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org	}
124c9490d33b98b7affb729b5f1db13cb0a348471aagl@chromium.org
125