Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/evp/e_des.c	Lines:	31	73	42.5 %
Date:	2017-11-07	Branches:	11	34	32.4 %


/* $OpenBSD: e_des.c,v 1.14 2015/10/12 06:05:52 guenther 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 <stdio.h>

#include <openssl/opensslconf.h>

#ifndef OPENSSL_NO_DES

#include <openssl/evp.h>
#include <openssl/des.h>
#include <openssl/objects.h>

#include "evp_locl.h"

static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
    const unsigned char *iv, int enc);
static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);

/* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */

static int
des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl)
{
	BLOCK_CIPHER_ecb_loop()
		DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
		    ctx->cipher_data, ctx->encrypt);
	return 1;
}

static int
des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl)
{
	while (inl >= EVP_MAXCHUNK) {
		DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, &ctx->num);
		inl -= EVP_MAXCHUNK;
		in += EVP_MAXCHUNK;
		out += EVP_MAXCHUNK;
	}
	if (inl)
		DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, &ctx->num);
	return 1;
}

static int
des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl)
{
	while (inl >= EVP_MAXCHUNK) {
		DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, ctx->encrypt);
		inl -= EVP_MAXCHUNK;
		in += EVP_MAXCHUNK;
		out += EVP_MAXCHUNK;
	}
	if (inl)
		DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, ctx->encrypt);
	return 1;
}

static int
des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl)
{
	while (inl >= EVP_MAXCHUNK) {
		DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
		inl -= EVP_MAXCHUNK;
		in += EVP_MAXCHUNK;
		out += EVP_MAXCHUNK;
	}
	if (inl)
		DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
	return 1;
}

/* Although we have a CFB-r implementation for DES, it doesn't pack the right
   way, so wrap it here */
static int
des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl)
{
	size_t n, chunk = EVP_MAXCHUNK/8;
	unsigned char c[1], d[1];

	if (inl < chunk)
		chunk = inl;

	while (inl && inl >= chunk) {
		for (n = 0; n < chunk*8; ++n) {
			c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
			DES_cfb_encrypt(c, d, 1, 1, ctx->cipher_data,
			    (DES_cblock *)ctx->iv, ctx->encrypt);
			out[n / 8] = (out[n / 8] &
			    ~(0x80 >> (unsigned int)(n % 8))) |
			    ((d[0] & 0x80) >> (unsigned int)(n % 8));
		}
		inl -= chunk;
		in += chunk;
		out += chunk;
		if (inl < chunk)
			chunk = inl;
	}

	return 1;
}

static int
des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl)
{
	while (inl >= EVP_MAXCHUNK) {
		DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
		    ctx->cipher_data, (DES_cblock *)ctx->iv, ctx->encrypt);
		inl -= EVP_MAXCHUNK;
		in += EVP_MAXCHUNK;
		out += EVP_MAXCHUNK;
	}
	if (inl)
		DES_cfb_encrypt(in, out, 8, (long)inl, ctx->cipher_data,
		    (DES_cblock *)ctx->iv, ctx->encrypt);
	return 1;
}

BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64,
    EVP_CIPH_RAND_KEY, des_init_key, NULL,
    EVP_CIPHER_set_asn1_iv,
    EVP_CIPHER_get_asn1_iv,
    des_ctrl)

BLOCK_CIPHER_def_cfb(des, DES_key_schedule, NID_des, 8, 8, 1,
    EVP_CIPH_RAND_KEY, des_init_key, NULL,
    EVP_CIPHER_set_asn1_iv,
    EVP_CIPHER_get_asn1_iv, des_ctrl)

BLOCK_CIPHER_def_cfb(des, DES_key_schedule, NID_des, 8, 8, 8,
    EVP_CIPH_RAND_KEY, des_init_key, NULL,
    EVP_CIPHER_set_asn1_iv,
    EVP_CIPHER_get_asn1_iv, des_ctrl)

static int
des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
    const unsigned char *iv, int enc)
{
	DES_cblock *deskey = (DES_cblock *)key;

	DES_set_key_unchecked(deskey, ctx->cipher_data);
	return 1;
}

static int
des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
	switch (type) {
	case EVP_CTRL_RAND_KEY:
		if (DES_random_key((DES_cblock *)ptr) == 0)
			return 0;
		return 1;

	default:
		return -1;
	}
}

#endif


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: e_des.c,v 1.14 2015/10/12 06:05:52 guenther 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 <stdio.h>
60
61			#include <openssl/opensslconf.h>
62
63			#ifndef OPENSSL_NO_DES
64
65			#include <openssl/evp.h>
66			#include <openssl/des.h>
67			#include <openssl/objects.h>
68
69			#include "evp_locl.h"
70
71			static int des_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
72			const unsigned char *iv, int enc);
73			static int des_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr);
74
75			/* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */
76
77			static int
78			des_ecb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
79			const unsigned char *in, size_t inl)
80			{
81	✗✓✓✓	2712	BLOCK_CIPHER_ecb_loop()
82		1920	DES_ecb_encrypt((DES_cblock )(in + i), (DES_cblock )(out + i),
83		960	ctx->cipher_data, ctx->encrypt);
84		198	return 1;
85		198	}
86
87			static int
88			des_ofb_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
89			const unsigned char *in, size_t inl)
90			{
91	✗✓	180	while (inl >= EVP_MAXCHUNK) {
92			DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
93			(DES_cblock *)ctx->iv, &ctx->num);
94			inl -= EVP_MAXCHUNK;
95			in += EVP_MAXCHUNK;
96			out += EVP_MAXCHUNK;
97			}
98	✓✗	60	if (inl)
99		120	DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data,
100		60	(DES_cblock *)ctx->iv, &ctx->num);
101		60	return 1;
102			}
103
104			static int
105			des_cbc_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
106			const unsigned char *in, size_t inl)
107			{
108	✗✓	498	while (inl >= EVP_MAXCHUNK) {
109			DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
110			(DES_cblock *)ctx->iv, ctx->encrypt);
111			inl -= EVP_MAXCHUNK;
112			in += EVP_MAXCHUNK;
113			out += EVP_MAXCHUNK;
114			}
115	✓✗	166	if (inl)
116		332	DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
117		166	(DES_cblock *)ctx->iv, ctx->encrypt);
118		166	return 1;
119			}
120
121			static int
122			des_cfb64_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
123			const unsigned char *in, size_t inl)
124			{
125	✗✓	180	while (inl >= EVP_MAXCHUNK) {
126			DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
127			(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
128			inl -= EVP_MAXCHUNK;
129			in += EVP_MAXCHUNK;
130			out += EVP_MAXCHUNK;
131			}
132	✓✗	60	if (inl)
133		120	DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
134		60	(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
135		60	return 1;
136			}
137
138			/* Although we have a CFB-r implementation for DES, it doesn't pack the right
139			way, so wrap it here */
140			static int
141			des_cfb1_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
142			const unsigned char *in, size_t inl)
143			{
144			size_t n, chunk = EVP_MAXCHUNK/8;
145			unsigned char c[1], d[1];
146
147			if (inl < chunk)
148			chunk = inl;
149
150			while (inl && inl >= chunk) {
151			for (n = 0; n < chunk*8; ++n) {
152			c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
153			DES_cfb_encrypt(c, d, 1, 1, ctx->cipher_data,
154			(DES_cblock *)ctx->iv, ctx->encrypt);
155			out[n / 8] = (out[n / 8] &
156			~(0x80 >> (unsigned int)(n % 8))) \|
157			((d[0] & 0x80) >> (unsigned int)(n % 8));
158			}
159			inl -= chunk;
160			in += chunk;
161			out += chunk;
162			if (inl < chunk)
163			chunk = inl;
164			}
165
166			return 1;
167			}
168
169			static int
170			des_cfb8_cipher(EVP_CIPHER_CTX ctx, unsigned char out,
171			const unsigned char *in, size_t inl)
172			{
173	✗✓	168	while (inl >= EVP_MAXCHUNK) {
174			DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
175			ctx->cipher_data, (DES_cblock *)ctx->iv, ctx->encrypt);
176			inl -= EVP_MAXCHUNK;
177			in += EVP_MAXCHUNK;
178			out += EVP_MAXCHUNK;
179			}
180	✓✗	56	if (inl)
181		112	DES_cfb_encrypt(in, out, 8, (long)inl, ctx->cipher_data,
182		56	(DES_cblock *)ctx->iv, ctx->encrypt);
183		56	return 1;
184			}
185
186		18354	BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64,
187			EVP_CIPH_RAND_KEY, des_init_key, NULL,
188			EVP_CIPHER_set_asn1_iv,
189			EVP_CIPHER_get_asn1_iv,
190			des_ctrl)
191
192		3106	BLOCK_CIPHER_def_cfb(des, DES_key_schedule, NID_des, 8, 8, 1,
193			EVP_CIPH_RAND_KEY, des_init_key, NULL,
194			EVP_CIPHER_set_asn1_iv,
195			EVP_CIPHER_get_asn1_iv, des_ctrl)
196
197		3106	BLOCK_CIPHER_def_cfb(des, DES_key_schedule, NID_des, 8, 8, 8,
198			EVP_CIPH_RAND_KEY, des_init_key, NULL,
199			EVP_CIPHER_set_asn1_iv,
200			EVP_CIPHER_get_asn1_iv, des_ctrl)
201
202			static int
203			des_init_key(EVP_CIPHER_CTX ctx, const unsigned char key,
204			const unsigned char *iv, int enc)
205			{
206		328	DES_cblock deskey = (DES_cblock )key;
207
208		164	DES_set_key_unchecked(deskey, ctx->cipher_data);
209		164	return 1;
210			}
211
212			static int
213			des_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
214			{
215			switch (type) {
216			case EVP_CTRL_RAND_KEY:
217			if (DES_random_key((DES_cblock *)ptr) == 0)
218			return 0;
219			return 1;
220
221			default:
222			return -1;
223			}
224			}
225
226			#endif