[thirdparty/openssl.git] / fips / fips.c

/* ====================================================================
 * Copyright (c) 2011 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 *
 */

#define OPENSSL_FIPSAPI

#include <openssl/crypto.h>
#include <openssl/rand.h>
#include <openssl/fips_rand.h>
#include <openssl/err.h>
#include <openssl/bio.h>
#include <openssl/hmac.h>
#include <openssl/rsa.h>
#include <openssl/dsa.h>
#include <openssl/ecdsa.h>
#include <string.h>
#include <limits.h>
#include "fips_locl.h"

#ifdef OPENSSL_FIPS

#include <openssl/fips.h>

#ifndef PATH_MAX
#define PATH_MAX 1024
#endif

static int fips_selftest_fail = 0;
static int fips_mode = 0;
static int fips_started = 0;

static int fips_is_owning_thread(void);
static int fips_set_owning_thread(void);
static int fips_clear_owning_thread(void);
static unsigned char *fips_signature_witness(void);

#define fips_w_lock()	CRYPTO_w_lock(CRYPTO_LOCK_FIPS)
#define fips_w_unlock()	CRYPTO_w_unlock(CRYPTO_LOCK_FIPS)
#define fips_r_lock()	CRYPTO_r_lock(CRYPTO_LOCK_FIPS)
#define fips_r_unlock()	CRYPTO_r_unlock(CRYPTO_LOCK_FIPS)

static void fips_set_mode(int onoff)
	{
	int owning_thread = fips_is_owning_thread();

	if (fips_started)
		{
		if (!owning_thread) fips_w_lock();
		fips_mode = onoff;
		if (!owning_thread) fips_w_unlock();
		}
	}

int FIPS_module_mode(void)
	{
	int ret = 0;
	int owning_thread = fips_is_owning_thread();

	if (fips_started)
		{
		if (!owning_thread) fips_r_lock();
		ret = fips_mode;
		if (!owning_thread) fips_r_unlock();
		}
	return ret;
	}

int FIPS_selftest_failed(void)
    {
    int ret = 0;
    if (fips_started)
	{
	int owning_thread = fips_is_owning_thread();

	if (!owning_thread) fips_r_lock();
	ret = fips_selftest_fail;
	if (!owning_thread) fips_r_unlock();
	}
    return ret;
    }

/* Selftest failure fatal exit routine. This will be called
 * during *any* cryptographic operation. It has the minimum
 * overhead possible to avoid too big a performance hit.
 */

void FIPS_selftest_check(void)
    {
    if (fips_selftest_fail)
	{
	OpenSSLDie(__FILE__,__LINE__, "FATAL FIPS SELFTEST FAILURE");
	}
    }

void fips_set_selftest_fail(void)
    {
    fips_selftest_fail = 1;
    }

extern const void         *FIPS_text_start(),  *FIPS_text_end();
extern const unsigned char FIPS_rodata_start[], FIPS_rodata_end[];
unsigned char              FIPS_signature [20] = { 0 };
__fips_constseg
static const char          FIPS_hmac_key[]="etaonrishdlcupfm";

unsigned int FIPS_incore_fingerprint(unsigned char *sig,unsigned int len)
    {
    const unsigned char *p1 = FIPS_text_start();
    const unsigned char *p2 = FIPS_text_end();
    const unsigned char *p3 = FIPS_rodata_start;
    const unsigned char *p4 = FIPS_rodata_end;
    HMAC_CTX c;

    HMAC_CTX_init(&c);
    HMAC_Init(&c,FIPS_hmac_key,strlen(FIPS_hmac_key),EVP_sha1());

    /* detect overlapping regions */
    if (p1<=p3 && p2>=p3)
	p3=p1, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;
    else if (p3<=p1 && p4>=p1)
	p3=p3, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;

    if (p1)
	HMAC_Update(&c,p1,(size_t)p2-(size_t)p1);

    if (FIPS_signature>=p3 && FIPS_signature<p4)
	{
	/* "punch" hole */
	HMAC_Update(&c,p3,(size_t)FIPS_signature-(size_t)p3);
	p3 = FIPS_signature+sizeof(FIPS_signature);
	if (p3<p4)
	    HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);
	}
    else
	HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);

    if (!fips_post_corrupt(FIPS_TEST_INTEGRITY, 0, NULL))
	HMAC_Update(&c, (unsigned char *)FIPS_hmac_key, 1);

    HMAC_Final(&c,sig,&len);
    HMAC_CTX_cleanup(&c);

    return len;
    }

int FIPS_check_incore_fingerprint(void)
    {
    unsigned char sig[EVP_MAX_MD_SIZE];
    unsigned int len;
    int rv = 0;
#if defined(__sgi) && (defined(__mips) || defined(mips))
    extern int __dso_displacement[];
#else
    extern int OPENSSL_NONPIC_relocated;
#endif

    if (!fips_post_started(FIPS_TEST_INTEGRITY, 0, NULL))
	return 1;

    if (FIPS_text_start()==NULL)
	{
	FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_UNSUPPORTED_PLATFORM);
	goto err;
	}

    len=FIPS_incore_fingerprint(sig,sizeof(sig));

    if (len!=sizeof(FIPS_signature) ||
	memcmp(FIPS_signature,sig,sizeof(FIPS_signature)))
	{
	if (FIPS_signature>=FIPS_rodata_start && FIPS_signature<FIPS_rodata_end)
	    FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_SEGMENT_ALIASING);
#if defined(__sgi) && (defined(__mips) || defined(mips))
	else if (__dso_displacement!=NULL)
#else
	else if (OPENSSL_NONPIC_relocated)
#endif
	    FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_NONPIC_RELOCATED);
	else
	    FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH);
#ifdef OPENSSL_FIPS_DEBUGGER
    	rv = 1;
#endif
	goto err;
	}
    rv = 1;
    err:
    if (rv == 0)
    	fips_post_failed(FIPS_TEST_INTEGRITY, 0, NULL);
    else
	if (!fips_post_success(FIPS_TEST_INTEGRITY, 0, NULL))
		return 0;
    return rv;
    }

int FIPS_module_mode_set(int onoff)
    {
    int ret = 0;

    fips_w_lock();
    fips_started = 1;
    fips_set_owning_thread();

    if(onoff)
	{

	fips_selftest_fail = 0;

	/* Don't go into FIPS mode twice, just so we can do automagic
	   seeding */
	if(FIPS_module_mode())
	    {
	    FIPSerr(FIPS_F_FIPS_MODULE_MODE_SET,FIPS_R_FIPS_MODE_ALREADY_SET);
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }

#ifdef OPENSSL_IA32_SSE2
	if ((OPENSSL_ia32cap & (1<<25|1<<26)) != (1<<25|1<<26))
	    {
	    FIPSerr(FIPS_F_FIPS_MODULE_MODE_SET,FIPS_R_UNSUPPORTED_PLATFORM);
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }
#endif

	if(fips_signature_witness() != FIPS_signature)
	    {
	    FIPSerr(FIPS_F_FIPS_MODULE_MODE_SET,FIPS_R_CONTRADICTING_EVIDENCE);
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }

	if(FIPS_selftest())
	    fips_set_mode(onoff);
	else
	    {
	    fips_selftest_fail = 1;
	    ret = 0;
	    goto end;
	    }
	ret = 1;
	goto end;
	}
    fips_set_mode(0);
    fips_selftest_fail = 0;
    ret = 1;
end:
    fips_clear_owning_thread();
    fips_w_unlock();
    return ret;
    }

static CRYPTO_THREADID fips_thread;
static int fips_thread_set = 0;

static int fips_is_owning_thread(void)
	{
	int ret = 0;

	if (fips_started)
		{
		CRYPTO_r_lock(CRYPTO_LOCK_FIPS2);
		if (fips_thread_set)
			{
			CRYPTO_THREADID cur;
			CRYPTO_THREADID_current(&cur);
			if (!CRYPTO_THREADID_cmp(&cur, &fips_thread))
				ret = 1;
			}
		CRYPTO_r_unlock(CRYPTO_LOCK_FIPS2);
		}
	return ret;
	}

int fips_set_owning_thread(void)
	{
	int ret = 0;

	if (fips_started)
		{
		CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
		if (!fips_thread_set)
			{
			CRYPTO_THREADID_current(&fips_thread);
			ret = 1;
			fips_thread_set = 1;
			}
		CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
		}
	return ret;
	}

int fips_clear_owning_thread(void)
	{
	int ret = 0;

	if (fips_started)
		{
		CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
		if (fips_thread_set)
			{
			CRYPTO_THREADID cur;
			CRYPTO_THREADID_current(&cur);
			if (!CRYPTO_THREADID_cmp(&cur, &fips_thread))
				fips_thread_set = 0;
			}
		CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
		}
	return ret;
	}

unsigned char *fips_signature_witness(void)
	{
	extern unsigned char FIPS_signature[];
	return FIPS_signature;
	}

unsigned long FIPS_module_version(void)
	{
	return FIPS_MODULE_VERSION_NUMBER;
	}

const char *FIPS_module_version_text(void)
	{
	return FIPS_MODULE_VERSION_TEXT;
	}

#if 0
/* The purpose of this is to ensure the error code exists and the function
 * name is to keep the error checking script quiet
 */
void hash_final(void)
	{
	FIPSerr(FIPS_F_HASH_FINAL,FIPS_R_NON_FIPS_METHOD);
	}
#endif


#endif
Commit	Line	Data
2b4b28dc	1	/* ====================================================================
63c82f8a	2	* Copyright (c) 2011 The OpenSSL Project. All rights reserved.
2b4b28dc DSH	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	*
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	*
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in
	13	* the documentation and/or other materials provided with the
	14	* distribution.
	15	*
	16	* 3. All advertising materials mentioning features or use of this
	17	* software must display the following acknowledgment:
	18	* "This product includes software developed by the OpenSSL Project
	19	* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
	20	*
	21	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	22	* endorse or promote products derived from this software without
	23	* prior written permission. For written permission, please contact
	24	* openssl-core@openssl.org.
	25	*
	26	* 5. Products derived from this software may not be called "OpenSSL"
	27	* nor may "OpenSSL" appear in their names without prior written
	28	* permission of the OpenSSL Project.
	29	*
	30	* 6. Redistributions of any form whatsoever must retain the following
	31	* acknowledgment:
	32	* "This product includes software developed by the OpenSSL Project
	33	* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
	34	*
	35	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	36	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	37	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	38	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	39	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	40	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	41	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	42	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	43	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	44	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	45	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	46	* OF THE POSSIBILITY OF SUCH DAMAGE.
	47	*
	48	*/
	49
7c8ced94	50	#define OPENSSL_FIPSAPI
2b4b28dc	51
017bc57b	52	#include <openssl/crypto.h>
2b4b28dc DSH	53	#include <openssl/rand.h>
	54	#include <openssl/fips_rand.h>
	55	#include <openssl/err.h>
	56	#include <openssl/bio.h>
	57	#include <openssl/hmac.h>
	58	#include <openssl/rsa.h>
	59	#include <openssl/dsa.h>
0fbf8f44	60	#include <openssl/ecdsa.h>
2b4b28dc DSH	61	#include <string.h>
	62	#include <limits.h>
	63	#include "fips_locl.h"
	64
	65	#ifdef OPENSSL_FIPS
	66
	67	#include <openssl/fips.h>
	68
	69	#ifndef PATH_MAX
	70	#define PATH_MAX 1024
	71	#endif
	72
63c82f8a DSH	73	static int fips_selftest_fail = 0;
63c82f8a DSH	74	static int fips_mode = 0;
7e951160	75	static int fips_started = 0;
2b4b28dc	76
7e951160 DSH	77	static int fips_is_owning_thread(void);
	78	static int fips_set_owning_thread(void);
	79	static int fips_clear_owning_thread(void);
	80	static unsigned char *fips_signature_witness(void);
	81
8776ef63 DSH	82	#define fips_w_lock() CRYPTO_w_lock(CRYPTO_LOCK_FIPS)
	83	#define fips_w_unlock() CRYPTO_w_unlock(CRYPTO_LOCK_FIPS)
	84	#define fips_r_lock() CRYPTO_r_lock(CRYPTO_LOCK_FIPS)
	85	#define fips_r_unlock() CRYPTO_r_unlock(CRYPTO_LOCK_FIPS)
7e951160	86
2b4b28dc DSH	87	static void fips_set_mode(int onoff)
	88	{
	89	int owning_thread = fips_is_owning_thread();
	90
7e951160	91	if (fips_started)
2b4b28dc DSH	92	{
	93	if (!owning_thread) fips_w_lock();
	94	fips_mode = onoff;
	95	if (!owning_thread) fips_w_unlock();
	96	}
	97	}
	98
c2fd5989	99	int FIPS_module_mode(void)
2b4b28dc DSH	100	{
	101	int ret = 0;
	102	int owning_thread = fips_is_owning_thread();
	103
7e951160	104	if (fips_started)
2b4b28dc DSH	105	{
	106	if (!owning_thread) fips_r_lock();
	107	ret = fips_mode;
	108	if (!owning_thread) fips_r_unlock();
	109	}
	110	return ret;
	111	}
	112
2b4b28dc DSH	113	int FIPS_selftest_failed(void)
	114	{
	115	int ret = 0;
7e951160	116	if (fips_started)
2b4b28dc DSH	117	{
	118	int owning_thread = fips_is_owning_thread();
	119
	120	if (!owning_thread) fips_r_lock();
	121	ret = fips_selftest_fail;
	122	if (!owning_thread) fips_r_unlock();
	123	}
	124	return ret;
	125	}
	126
	127	/* Selftest failure fatal exit routine. This will be called
	128	* during any cryptographic operation. It has the minimum
	129	* overhead possible to avoid too big a performance hit.
	130	*/
	131
	132	void FIPS_selftest_check(void)
	133	{
	134	if (fips_selftest_fail)
	135	{
	136	OpenSSLDie(__FILE__,__LINE__, "FATAL FIPS SELFTEST FAILURE");
	137	}
	138	}
	139
	140	void fips_set_selftest_fail(void)
	141	{
	142	fips_selftest_fail = 1;
	143	}
	144
2b4b28dc DSH	145	extern const void FIPS_text_start(), FIPS_text_end();
	146	extern const unsigned char FIPS_rodata_start[], FIPS_rodata_end[];
	147	unsigned char FIPS_signature [20] = { 0 };
03e389cf	148	__fips_constseg
2b4b28dc DSH	149	static const char FIPS_hmac_key[]="etaonrishdlcupfm";
	150
	151	unsigned int FIPS_incore_fingerprint(unsigned char *sig,unsigned int len)
	152	{
	153	const unsigned char *p1 = FIPS_text_start();
	154	const unsigned char *p2 = FIPS_text_end();
	155	const unsigned char *p3 = FIPS_rodata_start;
	156	const unsigned char *p4 = FIPS_rodata_end;
	157	HMAC_CTX c;
	158
	159	HMAC_CTX_init(&c);
	160	HMAC_Init(&c,FIPS_hmac_key,strlen(FIPS_hmac_key),EVP_sha1());
	161
	162	/* detect overlapping regions */
	163	if (p1<=p3 && p2>=p3)
	164	p3=p1, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;
	165	else if (p3<=p1 && p4>=p1)
	166	p3=p3, p4=p2>p4?p2:p4, p1=NULL, p2=NULL;
	167
	168	if (p1)
	169	HMAC_Update(&c,p1,(size_t)p2-(size_t)p1);
	170
	171	if (FIPS_signature>=p3 && FIPS_signature<p4)
	172	{
	173	/* "punch" hole */
	174	HMAC_Update(&c,p3,(size_t)FIPS_signature-(size_t)p3);
	175	p3 = FIPS_signature+sizeof(FIPS_signature);
	176	if (p3<p4)
	177	HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);
	178	}
	179	else
	180	HMAC_Update(&c,p3,(size_t)p4-(size_t)p3);
	181
ac892b7a DSH	182	if (!fips_post_corrupt(FIPS_TEST_INTEGRITY, 0, NULL))
	183	HMAC_Update(&c, (unsigned char *)FIPS_hmac_key, 1);
	184
2b4b28dc DSH	185	HMAC_Final(&c,sig,&len);
	186	HMAC_CTX_cleanup(&c);
	187
	188	return len;
	189	}
	190
	191	int FIPS_check_incore_fingerprint(void)
	192	{
	193	unsigned char sig[EVP_MAX_MD_SIZE];
	194	unsigned int len;
ac892b7a	195	int rv = 0;
2b4b28dc DSH	196	#if defined(__sgi) && (defined(__mips) \|\| defined(mips))
	197	extern int __dso_displacement[];
	198	#else
	199	extern int OPENSSL_NONPIC_relocated;
	200	#endif
	201
ac892b7a DSH	202	if (!fips_post_started(FIPS_TEST_INTEGRITY, 0, NULL))
	203	return 1;
	204
2b4b28dc DSH	205	if (FIPS_text_start()==NULL)
	206	{
	207	FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_UNSUPPORTED_PLATFORM);
ac892b7a	208	goto err;
2b4b28dc DSH	209	}
2b4b28dc DSH	210
ac892b7a	211	len=FIPS_incore_fingerprint(sig,sizeof(sig));
2b4b28dc DSH	212
	213	if (len!=sizeof(FIPS_signature) \|\|
	214	memcmp(FIPS_signature,sig,sizeof(FIPS_signature)))
	215	{
	216	if (FIPS_signature>=FIPS_rodata_start && FIPS_signature<FIPS_rodata_end)
	217	FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_SEGMENT_ALIASING);
	218	#if defined(__sgi) && (defined(__mips) \|\| defined(mips))
	219	else if (__dso_displacement!=NULL)
	220	#else
	221	else if (OPENSSL_NONPIC_relocated)
	222	#endif
	223	FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH_NONPIC_RELOCATED);
	224	else
	225	FIPSerr(FIPS_F_FIPS_CHECK_INCORE_FINGERPRINT,FIPS_R_FINGERPRINT_DOES_NOT_MATCH);
	226	#ifdef OPENSSL_FIPS_DEBUGGER
ac892b7a	227	rv = 1;
2b4b28dc	228	#endif
ac892b7a	229	goto err;
2b4b28dc	230	}
ac892b7a DSH	231	rv = 1;
	232	err:
	233	if (rv == 0)
	234	fips_post_failed(FIPS_TEST_INTEGRITY, 0, NULL);
	235	else
	236	if (!fips_post_success(FIPS_TEST_INTEGRITY, 0, NULL))
	237	return 0;
	238	return rv;
2b4b28dc DSH	239	}
2b4b28dc DSH	240
c2fd5989	241	int FIPS_module_mode_set(int onoff)
2b4b28dc	242	{
2b4b28dc DSH	243	int ret = 0;
	244
	245	fips_w_lock();
7e951160	246	fips_started = 1;
2b4b28dc DSH	247	fips_set_owning_thread();
	248
	249	if(onoff)
	250	{
2b4b28dc DSH	251
	252	fips_selftest_fail = 0;
	253
	254	/* Don't go into FIPS mode twice, just so we can do automagic
	255	seeding */
c2fd5989	256	if(FIPS_module_mode())
2b4b28dc	257	{
f76b1baf	258	FIPSerr(FIPS_F_FIPS_MODULE_MODE_SET,FIPS_R_FIPS_MODE_ALREADY_SET);
2b4b28dc DSH	259	fips_selftest_fail = 1;
	260	ret = 0;
	261	goto end;
	262	}
	263
	264	#ifdef OPENSSL_IA32_SSE2
	265	if ((OPENSSL_ia32cap & (1<<25\|1<<26)) != (1<<25\|1<<26))
	266	{
f76b1baf	267	FIPSerr(FIPS_F_FIPS_MODULE_MODE_SET,FIPS_R_UNSUPPORTED_PLATFORM);
2b4b28dc DSH	268	fips_selftest_fail = 1;
	269	ret = 0;
	270	goto end;
	271	}
	272	#endif
	273
	274	if(fips_signature_witness() != FIPS_signature)
	275	{
f76b1baf	276	FIPSerr(FIPS_F_FIPS_MODULE_MODE_SET,FIPS_R_CONTRADICTING_EVIDENCE);
2b4b28dc DSH	277	fips_selftest_fail = 1;
	278	ret = 0;
	279	goto end;
	280	}
	281
2b4b28dc	282	if(FIPS_selftest())
2f38b389	283	fips_set_mode(onoff);
2b4b28dc DSH	284	else
	285	{
	286	fips_selftest_fail = 1;
	287	ret = 0;
	288	goto end;
	289	}
	290	ret = 1;
	291	goto end;
	292	}
	293	fips_set_mode(0);
	294	fips_selftest_fail = 0;
	295	ret = 1;
	296	end:
	297	fips_clear_owning_thread();
	298	fips_w_unlock();
	299	return ret;
	300	}
	301
2b4b28dc DSH	302	static CRYPTO_THREADID fips_thread;
	303	static int fips_thread_set = 0;
	304
7e951160	305	static int fips_is_owning_thread(void)
2b4b28dc DSH	306	{
	307	int ret = 0;
	308
7e951160	309	if (fips_started)
2b4b28dc DSH	310	{
	311	CRYPTO_r_lock(CRYPTO_LOCK_FIPS2);
	312	if (fips_thread_set)
	313	{
	314	CRYPTO_THREADID cur;
	315	CRYPTO_THREADID_current(&cur);
	316	if (!CRYPTO_THREADID_cmp(&cur, &fips_thread))
	317	ret = 1;
	318	}
	319	CRYPTO_r_unlock(CRYPTO_LOCK_FIPS2);
	320	}
	321	return ret;
	322	}
	323
	324	int fips_set_owning_thread(void)
	325	{
	326	int ret = 0;
	327
7e951160	328	if (fips_started)
2b4b28dc DSH	329	{
	330	CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
	331	if (!fips_thread_set)
	332	{
	333	CRYPTO_THREADID_current(&fips_thread);
	334	ret = 1;
8776ef63	335	fips_thread_set = 1;
2b4b28dc DSH	336	}
	337	CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
	338	}
	339	return ret;
	340	}
	341
	342	int fips_clear_owning_thread(void)
	343	{
	344	int ret = 0;
	345
7e951160	346	if (fips_started)
2b4b28dc DSH	347	{
	348	CRYPTO_w_lock(CRYPTO_LOCK_FIPS2);
	349	if (fips_thread_set)
	350	{
	351	CRYPTO_THREADID cur;
	352	CRYPTO_THREADID_current(&cur);
	353	if (!CRYPTO_THREADID_cmp(&cur, &fips_thread))
	354	fips_thread_set = 0;
	355	}
	356	CRYPTO_w_unlock(CRYPTO_LOCK_FIPS2);
	357	}
	358	return ret;
	359	}
	360
	361	unsigned char *fips_signature_witness(void)
	362	{
	363	extern unsigned char FIPS_signature[];
	364	return FIPS_signature;
	365	}
	366
01a9a759 DSH	367	unsigned long FIPS_module_version(void)
	368	{
	369	return FIPS_MODULE_VERSION_NUMBER;
	370	}
	371
	372	const char *FIPS_module_version_text(void)
	373	{
	374	return FIPS_MODULE_VERSION_TEXT;
	375	}
	376
2b4b28dc DSH	377	#if 0
	378	/* The purpose of this is to ensure the error code exists and the function
	379	* name is to keep the error checking script quiet
	380	*/
	381	void hash_final(void)
	382	{
	383	FIPSerr(FIPS_F_HASH_FINAL,FIPS_R_NON_FIPS_METHOD);
	384	}
	385	#endif
	386
	387
	388	#endif