GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/crypto/../../libssl/src/crypto/rc2/rc2ofb64.c Lines: 0 28 0.0 %
Date: 2016-12-06 Branches: 0 6 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: rc2ofb64.c,v 1.5 2014/10/28 07:35:59 jsg Exp $ */
2
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3
 * All rights reserved.
4
 *
5
 * This package is an SSL implementation written
6
 * by Eric Young (eay@cryptsoft.com).
7
 * The implementation was written so as to conform with Netscapes SSL.
8
 *
9
 * This library is free for commercial and non-commercial use as long as
10
 * the following conditions are aheared to.  The following conditions
11
 * apply to all code found in this distribution, be it the RC4, RSA,
12
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13
 * included with this distribution is covered by the same copyright terms
14
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15
 *
16
 * Copyright remains Eric Young's, and as such any Copyright notices in
17
 * the code are not to be removed.
18
 * If this package is used in a product, Eric Young should be given attribution
19
 * as the author of the parts of the library used.
20
 * This can be in the form of a textual message at program startup or
21
 * in documentation (online or textual) provided with the package.
22
 *
23
 * Redistribution and use in source and binary forms, with or without
24
 * modification, are permitted provided that the following conditions
25
 * are met:
26
 * 1. Redistributions of source code must retain the copyright
27
 *    notice, this list of conditions and the following disclaimer.
28
 * 2. Redistributions in binary form must reproduce the above copyright
29
 *    notice, this list of conditions and the following disclaimer in the
30
 *    documentation and/or other materials provided with the distribution.
31
 * 3. All advertising materials mentioning features or use of this software
32
 *    must display the following acknowledgement:
33
 *    "This product includes cryptographic software written by
34
 *     Eric Young (eay@cryptsoft.com)"
35
 *    The word 'cryptographic' can be left out if the rouines from the library
36
 *    being used are not cryptographic related :-).
37
 * 4. If you include any Windows specific code (or a derivative thereof) from
38
 *    the apps directory (application code) you must include an acknowledgement:
39
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40
 *
41
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51
 * SUCH DAMAGE.
52
 *
53
 * The licence and distribution terms for any publically available version or
54
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
55
 * copied and put under another distribution licence
56
 * [including the GNU Public Licence.]
57
 */
58
59
#include <openssl/rc2.h>
60
#include "rc2_locl.h"
61
62
/* The input and output encrypted as though 64bit ofb mode is being
63
 * used.  The extra state information to record how much of the
64
 * 64bit block we have used is contained in *num;
65
 */
66
void RC2_ofb64_encrypt(const unsigned char *in, unsigned char *out,
67
		       long length, RC2_KEY *schedule, unsigned char *ivec,
68
		       int *num)
69
	{
70
	unsigned long v0,v1,t;
71
	int n= *num;
72
	long l=length;
73
	unsigned char d[8];
74
	char *dp;
75
	unsigned long ti[2];
76
	unsigned char *iv;
77
	int save=0;
78
79
	iv=(unsigned char *)ivec;
80
	c2l(iv,v0);
81
	c2l(iv,v1);
82
	ti[0]=v0;
83
	ti[1]=v1;
84
	dp=(char *)d;
85
	l2c(v0,dp);
86
	l2c(v1,dp);
87
	while (l--)
88
		{
89
		if (n == 0)
90
			{
91
			RC2_encrypt((unsigned long *)ti,schedule);
92
			dp=(char *)d;
93
			t=ti[0]; l2c(t,dp);
94
			t=ti[1]; l2c(t,dp);
95
			save++;
96
			}
97
		*(out++)= *(in++)^d[n];
98
		n=(n+1)&0x07;
99
		}
100
	if (save)
101
		{
102
		v0=ti[0];
103
		v1=ti[1];
104
		iv=(unsigned char *)ivec;
105
		l2c(v0,iv);
106
		l2c(v1,iv);
107
		}
108
	t=v0=v1=ti[0]=ti[1]=0;
109
	*num=n;
110
	}
111