4026

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Build # 4026

Build Type

Pull #716

travis-ci-com

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web-flow

Commit Message

<a href="https://github.com/stefanberger/swtpm/commit/<a class=hub.com/stefanberger/swtpm/commit/e0103ebc37f72bc249ab383e0abd65d0ef0502e1">e0103ebc3<a href="https://github.com/stefanberger/swtpm/commit/e0103ebc37f72bc249ab383e0abd65d0ef0502e1">">Merge </a><a class="double-link" href="https://github.com/stefanberger/swtpm/commit/<a class="double-link" href="https://github.com/stefanberger/swtpm/commit/d387c72b67cec49666feca86077612977a52b502">d387c72b6</a>">d387c72b6</a><a href="https://github.com/stefanberger/swtpm/commit/e0103ebc37f72bc249ab383e0abd65d0ef0502e1"> into 0ebe80466">0ebe80466</a>

Pull Request Pull Request #716: Add support for setting of a profile for a TPM 2

Run Details

319 of 319 new or added lines in 14 files covered. (100.0%)

6392 of 8563 relevant lines covered (74.65%)

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13.04

/src/swtpm/fips.c

/*
 * fips.c -- FIPS mode related functions
 *
 * (c) Copyright IBM Corporation 2022.
 *
 * Author: Stefan Berger <stefanb@us.ibm.com>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 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.
 *
 * Neither the names of the IBM Corporation nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 COPYRIGHT
 * HOLDER 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.
 */

#include "config.h"

#include <string.h>

#include "fips.h"
#include "logging.h"
#include "utils.h"
#include "swtpm_utils.h"

#if defined(HAVE_OPENSSL_FIPS_H)
# include <openssl/fips.h>
#elif defined(HAVE_OPENSSL_FIPS_MODE_SET_API)
/* Cygwin has no fips.h but API exists */
extern int FIPS_mode(void);
extern int FIPS_mode_set(int);
#endif

#if OPENSSL_VERSION_NUMBER >= 0x30000000L
# include <openssl/evp.h>
#endif

#include <openssl/err.h>

bool fips_mode_enabled(void)
{
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
    int mode = EVP_default_properties_is_fips_enabled(NULL);
#else
    int mode = FIPS_mode();
#endif
    return mode != 0;
}

/*
 * disable_fips_mode: If possible, disable FIPS mode to avoid libtpms failures
 *
 * While libtpms does not provide a solution to disable deactivated algorithms
 * avoid libtpms failures due to FIPS mode enablement by disabling FIPS mode.
 *
 * Returns < 0 on error, 0 otherwise.
 */
#if defined(HAVE_OPENSSL_FIPS_H) || defined(HAVE_OPENSSL_FIPS_MODE_SET_API)
int fips_mode_disable(void)
{
    int ret = 0;

#if OPENSSL_VERSION_NUMBER >= 0x30000000L
    int rc = EVP_default_properties_enable_fips(NULL, 0);
#else
    int rc = FIPS_mode_set(0);
#endif
    if (rc == 1) {
        logprintf(STDOUT_FILENO,
                  "Warning: Disabled OpenSSL FIPS mode\n");
    } else {
        unsigned long err = ERR_get_error();
        logprintf(STDERR_FILENO,
                  "Failed to disable OpenSSL FIPS mode: %s\n",
                  ERR_error_string(err, NULL));
        ret = -1;
    }
    return ret;
}
#else
/* OpenBSD & DragonFlyBSD case */
int fips_mode_disable(void)
{
    return 0;
}
#endif

/* list of FIPS-disabled algorithms that TPM 2 may enabled */
static const char *fips_disabled[] = {
    "camellia",
    "rsapss",
    "sha1",
    "tdes",
};

/* list of minimum required key sizes for FIPS */
static const struct key_sizes {
    const char *keyword;
    unsigned int min_size;
} key_sizes[] = {
    {
        .keyword = "rsa-min-size=",
        .min_size = 2048,
    }, {
        .keyword = "ecc-min-size=",
        .min_size = 224,
    }
};

/* Determine whether any of the algorithms in the array are FIPS-disable */
bool fips_algorithms_are_disabled(gchar *const*algorithms)
{
    bool found = false;
    size_t i, l;
    int j;
    unsigned long v;

    for (i = 0; i < ARRAY_LEN(fips_disabled); i++) {
        if (strv_strncmp(algorithms, fips_disabled[i], -1) >= 0) {
            found = true;
            break;
        }
    }

    for (i = 0; i < ARRAY_LEN(key_sizes); i++) {
        l = strlen(key_sizes[i].keyword);
        j = strv_strncmp(algorithms, key_sizes[i].keyword, l);
        if (j >= 0) {
            /* trusting value from libtpms is well formatted avoiding checks */
            v = strtoul(&(algorithms[j][l]), NULL, 10);
            if (v < key_sizes[i].min_size) {
                found = true;
                break;
            }
        }
    }
    return found;
}

1	/*
2	* fips.c -- FIPS mode related functions
3	*
4	* (c) Copyright IBM Corporation 2022.
5	*
6	* Author: Stefan Berger <stefanb@us.ibm.com>
7	*
8	* All rights reserved.
9	*
10	* Redistribution and use in source and binary forms, with or without
11	* modification, are permitted provided that the following conditions are
12	* met:
13	*
14	* Redistributions of source code must retain the above copyright notice,
15	* this list of conditions and the following disclaimer.
16	*
17	* Redistributions in binary form must reproduce the above copyright
18	* notice, this list of conditions and the following disclaimer in the
19	* documentation and/or other materials provided with the distribution.
20	*
21	* Neither the names of the IBM Corporation nor the names of its
22	* contributors may be used to endorse or promote products derived from
23	* this software without specific prior written permission.
24	*
25	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29	* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36	*/
37
38	#include "config.h"
39
40	#include <string.h>
41
42	#include "fips.h"
43	#include "logging.h"
44	#include "utils.h"
45	#include "swtpm_utils.h"
46
47	#if defined(HAVE_OPENSSL_FIPS_H)
48	# include <openssl/fips.h>
49	#elif defined(HAVE_OPENSSL_FIPS_MODE_SET_API)
50	/* Cygwin has no fips.h but API exists */
51	extern int FIPS_mode(void);
52	extern int FIPS_mode_set(int);
53	#endif
54
55	#if OPENSSL_VERSION_NUMBER >= 0x30000000L
56	# include <openssl/evp.h>
57	#endif
58
59	#include <openssl/err.h>
60
61	bool fips_mode_enabled(void)	6,051✔
62	{
63	#if OPENSSL_VERSION_NUMBER >= 0x30000000L
64	int mode = EVP_default_properties_is_fips_enabled(NULL);
65	#else
66	int mode = FIPS_mode();	6,051✔
67	#endif
68	return mode != 0;	6,051✔
69	}
70
71	/*
72	* disable_fips_mode: If possible, disable FIPS mode to avoid libtpms failures
73	*
74	* While libtpms does not provide a solution to disable deactivated algorithms
75	* avoid libtpms failures due to FIPS mode enablement by disabling FIPS mode.
76	*
77	* Returns < 0 on error, 0 otherwise.
78	*/
79	#if defined(HAVE_OPENSSL_FIPS_H) \|\| defined(HAVE_OPENSSL_FIPS_MODE_SET_API)
80	int fips_mode_disable(void)	×
81	{
82	int ret = 0;	×
83
84	#if OPENSSL_VERSION_NUMBER >= 0x30000000L
85	int rc = EVP_default_properties_enable_fips(NULL, 0);
86	#else
87	int rc = FIPS_mode_set(0);	×
88	#endif
89	if (rc == 1) {	×
90	logprintf(STDOUT_FILENO,	×
91	"Warning: Disabled OpenSSL FIPS mode\n");
92	} else {
93	unsigned long err = ERR_get_error();	×
94	logprintf(STDERR_FILENO,	×
95	"Failed to disable OpenSSL FIPS mode: %s\n",
96	ERR_error_string(err, NULL));
97	ret = -1;	×
98	}
99	return ret;	×
100	}
101	#else
102	/* OpenBSD & DragonFlyBSD case */
103	int fips_mode_disable(void)
104	{
105	return 0;
106	}
107	#endif
108
109	/* list of FIPS-disabled algorithms that TPM 2 may enabled */
110	static const char *fips_disabled[] = {
111	"camellia",
112	"rsapss",
113	"sha1",
114	"tdes",
115	};
116
117	/* list of minimum required key sizes for FIPS */
118	static const struct key_sizes {
119	const char *keyword;
120	unsigned int min_size;
121	} key_sizes[] = {
122	{
123	.keyword = "rsa-min-size=",
124	.min_size = 2048,
125	}, {
126	.keyword = "ecc-min-size=",
127	.min_size = 224,
128	}
129	};
130
131	/* Determine whether any of the algorithms in the array are FIPS-disable */
132	bool fips_algorithms_are_disabled(gchar constalgorithms)	×
133	{
134	bool found = false;	×
135	size_t i, l;
136	int j;
137	unsigned long v;
138
139	for (i = 0; i < ARRAY_LEN(fips_disabled); i++) {	×
140	if (strv_strncmp(algorithms, fips_disabled[i], -1) >= 0) {	×
141	found = true;
142	break;
143	}
144	}
145
146	for (i = 0; i < ARRAY_LEN(key_sizes); i++) {	×
147	l = strlen(key_sizes[i].keyword);	×
148	j = strv_strncmp(algorithms, key_sizes[i].keyword, l);	×
149	if (j >= 0) {	×
150	/* trusting value from libtpms is well formatted avoiding checks */
151	v = strtoul(&(algorithms[j][l]), NULL, 10);	×
152	if (v < key_sizes[i].min_size) {	×
153	found = true;
154	break;
155	}
156	}
157	}
158	return found;	×
159	}

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