Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/des/ncbc_enc.c	Lines:	46	46	100.0 %
Date:	2017-11-13	Branches:	22	28	78.6 %


/* $OpenBSD: ncbc_enc.c,v 1.7 2014/10/28 07:35:58 jsg 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_locl.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;
	}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ncbc_enc.c,v 1.7 2014/10/28 07:35:58 jsg Exp $ */
2			/*
3			* #included by:
4			* cbc_enc.c (DES_cbc_encrypt)
5			* des_enc.c (DES_ncbc_encrypt)
6			*/
7			/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
8			* All rights reserved.
9			*
10			* This package is an SSL implementation written
11			* by Eric Young (eay@cryptsoft.com).
12			* The implementation was written so as to conform with Netscapes SSL.
13			*
14			* This library is free for commercial and non-commercial use as long as
15			* the following conditions are aheared to. The following conditions
16			* apply to all code found in this distribution, be it the RC4, RSA,
17			* lhash, DES, etc., code; not just the SSL code. The SSL documentation
18			* included with this distribution is covered by the same copyright terms
19			* except that the holder is Tim Hudson (tjh@cryptsoft.com).
20			*
21			* Copyright remains Eric Young's, and as such any Copyright notices in
22			* the code are not to be removed.
23			* If this package is used in a product, Eric Young should be given attribution
24			* as the author of the parts of the library used.
25			* This can be in the form of a textual message at program startup or
26			* in documentation (online or textual) provided with the package.
27			*
28			* Redistribution and use in source and binary forms, with or without
29			* modification, are permitted provided that the following conditions
30			* are met:
31			* 1. Redistributions of source code must retain the copyright
32			* notice, this list of conditions and the following disclaimer.
33			* 2. Redistributions in binary form must reproduce the above copyright
34			* notice, this list of conditions and the following disclaimer in the
35			* documentation and/or other materials provided with the distribution.
36			* 3. All advertising materials mentioning features or use of this software
37			* must display the following acknowledgement:
38			* "This product includes cryptographic software written by
39			* Eric Young (eay@cryptsoft.com)"
40			* The word 'cryptographic' can be left out if the rouines from the library
41			* being used are not cryptographic related :-).
42			* 4. If you include any Windows specific code (or a derivative thereof) from
43			* the apps directory (application code) you must include an acknowledgement:
44			* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
45			*
46			* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
47			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
50			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56			* SUCH DAMAGE.
57			*
58			* The licence and distribution terms for any publically available version or
59			* derivative of this code cannot be changed. i.e. this code cannot simply be
60			* copied and put under another distribution licence
61			* [including the GNU Public Licence.]
62			*/
63
64			#include "des_locl.h"
65
66			#ifdef CBC_ENC_C__DONT_UPDATE_IV
67			void DES_cbc_encrypt(const unsigned char in, unsigned char out, long length,
68			DES_key_schedule _schedule, DES_cblock ivec, int enc)
69			#else
70			void DES_ncbc_encrypt(const unsigned char in, unsigned char out, long length,
71			DES_key_schedule _schedule, DES_cblock ivec, int enc)
72			#endif
73			{
74			DES_LONG tin0,tin1;
75			DES_LONG tout0,tout1,xor0,xor1;
76			long l=length;
77		372	DES_LONG tin[2];
78			unsigned char *iv;
79
80		186	iv = &(*ivec)[0];
81
82	✓✓	186	if (enc)
83			{
84		121	c2l(iv,tout0);
85		121	c2l(iv,tout1);
86	✓✓	2476	for (l-=8; l>=0; l-=8)
87			{
88		1117	c2l(in,tin0);
89		1117	c2l(in,tin1);
90		1117	tin0^=tout0; tin[0]=tin0;
91		1117	tin1^=tout1; tin[1]=tin1;
92		1117	DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT);
93		1117	tout0=tin[0]; l2c(tout0,out);
94		1117	tout1=tin[1]; l2c(tout1,out);
95			}
96	✓✓	121	if (l != -8)
97			{
98	✗✗✗✓ ✓✓✓✓ ✓	297	c2ln(in,tin0,tin1,l+8);
99		27	tin0^=tout0; tin[0]=tin0;
100		27	tin1^=tout1; tin[1]=tin1;
101		27	DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT);
102		27	tout0=tin[0]; l2c(tout0,out);
103		27	tout1=tin[1]; l2c(tout1,out);
104		27	}
105			#ifndef CBC_ENC_C__DONT_UPDATE_IV
106			iv = &(*ivec)[0];
107		121	l2c(tout0,iv);
108		121	l2c(tout1,iv);
109			#endif
110		121	}
111			else
112			{
113		65	c2l(iv,xor0);
114		65	c2l(iv,xor1);
115	✓✓	2172	for (l-=8; l>=0; l-=8)
116			{
117		1021	c2l(in,tin0); tin[0]=tin0;
118		1021	c2l(in,tin1); tin[1]=tin1;
119		1021	DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT);
120		1021	tout0=tin[0]^xor0;
121		1021	tout1=tin[1]^xor1;
122		1021	l2c(tout0,out);
123		1021	l2c(tout1,out);
124			xor0=tin0;
125			xor1=tin1;
126			}
127	✓✓	65	if (l != -8)
128			{
129		18	c2l(in,tin0); tin[0]=tin0;
130		18	c2l(in,tin1); tin[1]=tin1;
131		18	DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT);
132		18	tout0=tin[0]^xor0;
133		18	tout1=tin[1]^xor1;
134	✗✗✗✓ ✓✓✓✓ ✓	33	l2cn(tout0,tout1,out,l+8);
135			#ifndef CBC_ENC_C__DONT_UPDATE_IV
136			xor0=tin0;
137			xor1=tin1;
138			#endif
139		3	}
140			#ifndef CBC_ENC_C__DONT_UPDATE_IV
141			iv = &(*ivec)[0];
142		65	l2c(xor0,iv);
143		65	l2c(xor1,iv);
144			#endif
145			}
146			tin0=tin1=tout0=tout1=xor0=xor1=0;
147		186	tin[0]=tin[1]=0;
148		186	}