Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/idea/i_cbc.c	Lines:	73	73	100.0 %
Date:	2017-11-07	Branches:	62	96	64.6 %


/* $OpenBSD: i_cbc.c,v 1.3 2014/10/28 07:35:58 jsg 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_lcl.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;
	}

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);
	}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: i_cbc.c,v 1.3 2014/10/28 07:35:58 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/idea.h>
60			#include "idea_lcl.h"
61
62			void idea_cbc_encrypt(const unsigned char in, unsigned char out, long length,
63			IDEA_KEY_SCHEDULE ks, unsigned char iv, int encrypt)
64			{
65			unsigned long tin0,tin1;
66			unsigned long tout0,tout1,xor0,xor1;
67			long l=length;
68		60	unsigned long tin[2];
69
70	✓✓	30	if (encrypt)
71			{
72		14	n2l(iv,tout0);
73		14	n2l(iv,tout1);
74		14	iv-=8;
75	✓✓	104	for (l-=8; l>=0; l-=8)
76			{
77		38	n2l(in,tin0);
78		38	n2l(in,tin1);
79		38	tin0^=tout0;
80		38	tin1^=tout1;
81		38	tin[0]=tin0;
82		38	tin[1]=tin1;
83		38	idea_encrypt(tin,ks);
84		38	tout0=tin[0]; l2n(tout0,out);
85		38	tout1=tin[1]; l2n(tout1,out);
86			}
87	✓✓	14	if (l != -8)
88			{
89	✗✗✓✓ ✓✓✓✓ ✓	78	n2ln(in,tin0,tin1,l+8);
90		6	tin0^=tout0;
91		6	tin1^=tout1;
92		6	tin[0]=tin0;
93		6	tin[1]=tin1;
94		6	idea_encrypt(tin,ks);
95		6	tout0=tin[0]; l2n(tout0,out);
96		6	tout1=tin[1]; l2n(tout1,out);
97		6	}
98		14	l2n(tout0,iv);
99		14	l2n(tout1,iv);
100		14	}
101			else
102			{
103		16	n2l(iv,xor0);
104		16	n2l(iv,xor1);
105		16	iv-=8;
106	✓✓	108	for (l-=8; l>=0; l-=8)
107			{
108		38	n2l(in,tin0); tin[0]=tin0;
109		38	n2l(in,tin1); tin[1]=tin1;
110		38	idea_encrypt(tin,ks);
111		38	tout0=tin[0]^xor0;
112		38	tout1=tin[1]^xor1;
113		38	l2n(tout0,out);
114		38	l2n(tout1,out);
115			xor0=tin0;
116			xor1=tin1;
117			}
118	✓✓	16	if (l != -8)
119			{
120		42	n2l(in,tin0); tin[0]=tin0;
121		42	n2l(in,tin1); tin[1]=tin1;
122		42	idea_encrypt(tin,ks);
123		42	tout0=tin[0]^xor0;
124		42	tout1=tin[1]^xor1;
125	✗✗✓✓ ✓✓✓✓ ✓	78	l2nn(tout0,tout1,out,l+8);
126			xor0=tin0;
127			xor1=tin1;
128		6	}
129		16	l2n(xor0,iv);
130		16	l2n(xor1,iv);
131			}
132			tin0=tin1=tout0=tout1=xor0=xor1=0;
133		30	tin[0]=tin[1]=0;
134		30	}
135
136			void idea_encrypt(unsigned long d, IDEA_KEY_SCHEDULE key)
137			{
138			IDEA_INT *p;
139			unsigned long x1,x2,x3,x4,t0,t1,ul;
140
141		392	x2=d[0];
142		196	x1=(x2>>16);
143		196	x4=d[1];
144		196	x3=(x4>>16);
145
146		196	p= &(key->data[0][0]);
147
148	✓✓✓✗ ✓✗✓✗	1764	E_IDEA(0);
149	✓✗✓✗ ✓✓✓✗	1764	E_IDEA(1);
150	✓✗✓✗ ✓✗✓✗	1764	E_IDEA(2);
151	✓✗✓✗ ✓✗✓✗	1764	E_IDEA(3);
152	✓✗✓✗ ✓✗✓✗	1764	E_IDEA(4);
153	✓✗✓✗ ✓✗✓✗	1764	E_IDEA(5);
154	✓✗✓✗ ✓✓✓✗	1764	E_IDEA(6);
155	✓✗✓✗ ✓✗✓✗	1764	E_IDEA(7);
156
157		196	x1&=0xffff;
158	✓✓	588	idea_mul(x1,x1,*p,ul); p++;
159
160		196	t0= x3+ *(p++);
161		196	t1= x2+ *(p++);
162
163		196	x4&=0xffff;
164	✓✗	392	idea_mul(x4,x4,*p,ul);
165
166		196	d[0]=(t0&0xffff)\|((x1&0xffff)<<16);
167		196	d[1]=(x4&0xffff)\|((t1&0xffff)<<16);
168		196	}