diff --git a/Makefile.in b/Makefile.in

index 9311e16..1eb2b45 100644

--- a/Makefile.in

+++ b/Makefile.in

@@ -164,25 +164,25 @@ libssh.a: $(LIBSSH_OBJS)

 	$(RANLIB) $@

 ssh$(EXEEXT): $(LIBCOMPAT) libssh.a $(SSHOBJS)

-	$(LD) -o $@ $(SSHOBJS) $(LDFLAGS) -lssh -lopenbsd-compat $(SSHLIBS) $(LIBS) $(GSSLIBS)

+	$(LD) -o $@ $(SSHOBJS) $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(SSHLIBS) $(LIBS) $(GSSLIBS)

 sshd$(EXEEXT): libssh.a	$(LIBCOMPAT) $(SSHDOBJS)

-	$(LD) -o $@ $(SSHDOBJS) $(LDFLAGS) -lssh -lopenbsd-compat $(SSHDLIBS) $(LIBS) $(GSSLIBS) $(K5LIBS)

+	$(LD) -o $@ $(SSHDOBJS) $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(SSHDLIBS) $(LIBS) $(GSSLIBS) $(K5LIBS)

 scp$(EXEEXT): $(LIBCOMPAT) libssh.a scp.o progressmeter.o

 	$(LD) -o $@ scp.o progressmeter.o bufaux.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)

 ssh-add$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-add.o

-	$(LD) -o $@ ssh-add.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)

+	$(LD) -o $@ ssh-add.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)

 ssh-agent$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-agent.o ssh-pkcs11-client.o

-	$(LD) -o $@ ssh-agent.o ssh-pkcs11-client.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)

+	$(LD) -o $@ ssh-agent.o ssh-pkcs11-client.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)

 ssh-keygen$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keygen.o

-	$(LD) -o $@ ssh-keygen.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)

+	$(LD) -o $@ ssh-keygen.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)

 ssh-keysign$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keysign.o roaming_dummy.o readconf.o

-	$(LD) -o $@ ssh-keysign.o readconf.o roaming_dummy.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)

+	$(LD) -o $@ ssh-keysign.o readconf.o roaming_dummy.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)

 ssh-pkcs11-helper$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-pkcs11-helper.o ssh-pkcs11.o

 	$(LD) -o $@ ssh-pkcs11-helper.o ssh-pkcs11.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lopenbsd-compat $(LIBS)

@@ -197,7 +197,7 @@ ctr-cavstest$(EXEEXT): $(LIBCOMPAT) libssh.a ctr-cavstest.o

 	$(LD) -o $@ ctr-cavstest.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(LIBS)

 ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o roaming_dummy.o

-	$(LD) -o $@ ssh-keyscan.o roaming_dummy.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh $(LIBS)

+	$(LD) -o $@ ssh-keyscan.o roaming_dummy.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(LIBS)

 sftp-server$(EXEEXT): $(LIBCOMPAT) libssh.a sftp.o sftp-common.o sftp-server.o sftp-server-main.o

 	$(LD) -o $@ sftp-server.o sftp-common.o sftp-server-main.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)

diff --git a/cipher-ctr.c b/cipher-ctr.c

index 73e9c7c..40ee395 100644

--- a/cipher-ctr.c

+++ b/cipher-ctr.c

@@ -179,7 +179,8 @@ evp_aes_128_ctr(void)

 	aes_ctr.do_cipher = ssh_aes_ctr;

 #ifndef SSH_OLD_EVP

 	aes_ctr.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH |

-	    EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV;

+	    EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV |

+	    EVP_CIPH_FLAG_FIPS;

 #endif

 	return (&aes_ctr);

 }

diff --git a/cipher.c b/cipher.c

index 9cc7cf8..5ebfa84 100644

--- a/cipher.c

+++ b/cipher.c

@@ -39,6 +39,8 @@

 #include <sys/types.h>

+#include <openssl/fips.h>

+

 #include <string.h>

 #include <stdarg.h>

 #include <stdio.h>

@@ -99,6 +101,26 @@ static const struct sshcipher ciphers[] = {

 	{ NULL,		SSH_CIPHER_INVALID, 0, 0, 0, 0, 0, 0, NULL }

 };

+static const struct sshcipher fips_ciphers[] = {

+	{ "none",	SSH_CIPHER_NONE, 8, 0, 0, 0, 0, 0, EVP_enc_null },

+	{ "3des-cbc",	SSH_CIPHER_SSH2, 8, 24, 0, 0, 0, 1, EVP_des_ede3_cbc },

+	{ "aes128-cbc",	SSH_CIPHER_SSH2, 16, 16, 0, 0, 0, 1, EVP_aes_128_cbc },

+	{ "aes192-cbc",	SSH_CIPHER_SSH2, 16, 24, 0, 0, 0, 1, EVP_aes_192_cbc },

+	{ "aes256-cbc",	SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 1, EVP_aes_256_cbc },

+	{ "rijndael-cbc@lysator.liu.se",

+			SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 1, EVP_aes_256_cbc },

+	{ "aes128-ctr",	SSH_CIPHER_SSH2, 16, 16, 0, 0, 0, 0, EVP_aes_128_ctr },

+	{ "aes192-ctr",	SSH_CIPHER_SSH2, 16, 24, 0, 0, 0, 0, EVP_aes_192_ctr },

+	{ "aes256-ctr",	SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 0, EVP_aes_256_ctr },

+#ifdef OPENSSL_HAVE_EVPGCM

+	{ "aes128-gcm@openssh.com",

+			SSH_CIPHER_SSH2, 16, 16, 12, 16, 0, 0, EVP_aes_128_gcm },

+	{ "aes256-gcm@openssh.com",

+			SSH_CIPHER_SSH2, 16, 32, 12, 16, 0, 0, EVP_aes_256_gcm },

+#endif

+	{ NULL,		SSH_CIPHER_INVALID, 0, 0, 0, 0, 0, 0, NULL }

+};

+

 /*--*/

 /* Returns a comma-separated list of supported ciphers. */

@@ -109,7 +131,7 @@ cipher_alg_list(char sep, int auth_only)

 	size_t nlen, rlen = 0;

 	const struct sshcipher *c;

-	for (c = ciphers; c->name != NULL; c++) {

+	for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++) {

 		if (c->number != SSH_CIPHER_SSH2)

 			continue;

 		if (auth_only && c->auth_len == 0)

@@ -193,7 +215,7 @@ const struct sshcipher *

 cipher_by_name(const char *name)

 {

 	const struct sshcipher *c;

-	for (c = ciphers; c->name != NULL; c++)

+	for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++)

 		if (strcmp(c->name, name) == 0)

 			return c;

 	return NULL;

@@ -203,7 +225,7 @@ const struct sshcipher *

 cipher_by_number(int id)

 {

 	const struct sshcipher *c;

-	for (c = ciphers; c->name != NULL; c++)

+	for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++)

 		if (c->number == id)

 			return c;

 	return NULL;

@@ -244,7 +266,7 @@ cipher_number(const char *name)

 	const struct sshcipher *c;

 	if (name == NULL)

 		return -1;

-	for (c = ciphers; c->name != NULL; c++)

+	for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++)

 		if (strcasecmp(c->name, name) == 0)

 			return c->number;

 	return -1;

diff --git a/dh.h b/dh.h

index 48f7b68..9ff39f4 100644

--- a/dh.h

+++ b/dh.h

@@ -45,6 +45,7 @@ int	 dh_estimate(int);

 /* Min and max values from RFC4419. */

 #define DH_GRP_MIN	1024

+#define DH_GRP_MIN_FIPS	2048

 #define DH_GRP_MAX	8192

 /*

diff --git a/entropy.c b/entropy.c

index d24e724..06b0095 100644

--- a/entropy.c

+++ b/entropy.c

@@ -215,6 +215,9 @@ seed_rng(void)

 		fatal("OpenSSL version mismatch. Built against %lx, you "

 		    "have %lx", (u_long)OPENSSL_VERSION_NUMBER, SSLeay());

+	/* clean the PRNG status when exiting the program */

+	atexit(RAND_cleanup);

+

 #ifndef OPENSSL_PRNG_ONLY

 	if (RAND_status() == 1) {

 		debug3("RNG is ready, skipping seeding");

diff --git a/kex.c b/kex.c

index e0cf3de..e11198f 100644

--- a/kex.c

+++ b/kex.c

@@ -35,6 +35,7 @@

 #ifdef WITH_OPENSSL

 #include <openssl/crypto.h>

+#include <openssl/fips.h>

 #endif

 #include "xmalloc.h"

@@ -107,6 +108,25 @@ static const struct kexalg kexalgs[] = {

 	{ NULL, -1, -1, -1},

 };

+static const struct kexalg kexalgs_fips[] = {

+	{ KEX_DH14, KEX_DH_GRP14_SHA1, 0, SSH_DIGEST_SHA1 },

+	{ KEX_DHGEX_SHA1, KEX_DH_GEX_SHA1, 0, SSH_DIGEST_SHA1 },

+#ifdef HAVE_EVP_SHA256

+	{ KEX_DHGEX_SHA256, KEX_DH_GEX_SHA256, 0, SSH_DIGEST_SHA256 },

+#endif

+#ifdef OPENSSL_HAS_ECC

+	{ KEX_ECDH_SHA2_NISTP256, KEX_ECDH_SHA2,

+	    NID_X9_62_prime256v1, SSH_DIGEST_SHA256 },

+	{ KEX_ECDH_SHA2_NISTP384, KEX_ECDH_SHA2, NID_secp384r1,

+	    SSH_DIGEST_SHA384 },

+# ifdef OPENSSL_HAS_NISTP521

+	{ KEX_ECDH_SHA2_NISTP521, KEX_ECDH_SHA2, NID_secp521r1,

+	    SSH_DIGEST_SHA512 },

+# endif

+#endif

+	{ NULL, -1, -1, -1},

+};

+

 char *

 kex_alg_list(char sep)

 {

@@ -130,7 +150,7 @@ kex_alg_by_name(const char *name)

 {

 	const struct kexalg *k;

-	for (k = kexalgs; k->name != NULL; k++) {

+	for (k = (FIPS_mode() ? kexalgs_fips : kexalgs); k->name != NULL; k++) {

 		if (strcmp(k->name, name) == 0)

 			return k;

 #ifdef GSSAPI

@@ -155,7 +175,10 @@ kex_names_valid(const char *names)

 	for ((p = strsep(&cp, ",")); p && *p != '\0';

 	    (p = strsep(&cp, ","))) {

 		if (kex_alg_by_name(p) == NULL) {

-			error("Unsupported KEX algorithm \"%.100s\"", p);

+			if (FIPS_mode())

+				error("\"%.100s\" is not allowed in FIPS mode", p);

+			else

+				error("Unsupported KEX algorithm \"%.100s\"", p);

 			free(s);

 			return 0;

 		}

diff --git a/kexecdhc.c b/kexecdhc.c

index 2f7629c..20c9946 100644

--- a/kexecdhc.c

+++ b/kexecdhc.c

@@ -154,6 +154,7 @@ kexecdh_client(Kex *kex)

 	kex_derive_keys_bn(kex, hash, hashlen, shared_secret);

 	BN_clear_free(shared_secret);

+	memset(hash, 0, hashlen);

 	kex_finish(kex);

 }

 #else /* OPENSSL_HAS_ECC */

diff --git a/kexecdhs.c b/kexecdhs.c

index 2700b72..0820894 100644

--- a/kexecdhs.c

+++ b/kexecdhs.c

@@ -150,6 +150,7 @@ kexecdh_server(Kex *kex)

 	kex_derive_keys_bn(kex, hash, hashlen, shared_secret);

 	BN_clear_free(shared_secret);

+	memset(hash, 0, hashlen);

 	kex_finish(kex);

 }

 #else /* OPENSSL_HAS_ECC */

diff --git a/kexgexc.c b/kexgexc.c

index 0a91bdd..b75930b 100644

--- a/kexgexc.c

+++ b/kexgexc.c

@@ -26,6 +26,8 @@

 #include "includes.h"

+#include <openssl/fips.h>

+

 #include <sys/types.h>

 #include <openssl/dh.h>

@@ -58,7 +60,7 @@ kexgex_client(Kex *kex)

 	int min, max, nbits;

 	DH *dh;

-	min = DH_GRP_MIN;

+	min = FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN;

 	max = DH_GRP_MAX;

 	/* Servers with MAX4096DH need a preferred size (nbits) <= 4096.

diff --git a/kexgexs.c b/kexgexs.c

index 770ad28..9d4fc6d 100644

--- a/kexgexs.c

+++ b/kexgexs.c

@@ -76,16 +76,16 @@ kexgex_server(Kex *kex)

 		omin = min = packet_get_int();

 		onbits = nbits = packet_get_int();

 		omax = max = packet_get_int();

-		min = MAX(DH_GRP_MIN, min);

+		min = MAX(FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN, min);

 		max = MIN(DH_GRP_MAX, max);

-		nbits = MAX(DH_GRP_MIN, nbits);

+		nbits = MAX(FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN, nbits);

 		nbits = MIN(DH_GRP_MAX, nbits);

 		break;

 	case SSH2_MSG_KEX_DH_GEX_REQUEST_OLD:

 		debug("SSH2_MSG_KEX_DH_GEX_REQUEST_OLD received");

 		onbits = nbits = packet_get_int();

 		/* unused for old GEX */

-		omin = min = DH_GRP_MIN;

+		omin = min = FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN;

 		omax = max = DH_GRP_MAX;

 		break;

 	default:

diff --git a/mac.c b/mac.c

index fd07bf2..fedfbb2 100644

--- a/mac.c

+++ b/mac.c

@@ -27,6 +27,8 @@

 #include <sys/types.h>

+#include <openssl/fips.h>

+

 #include <stdarg.h>

 #include <string.h>

 #include <signal.h>

@@ -60,7 +62,7 @@ struct macalg {

 	int		etm;		/* Encrypt-then-MAC */

 };

-static const struct macalg macs[] = {

+static const struct macalg all_macs[] = {

 	/* Encrypt-and-MAC (encrypt-and-authenticate) variants */

 	{ "hmac-sha1",				SSH_DIGEST, SSH_DIGEST_SHA1, 0, 0, 0, 0 },

 	{ "hmac-sha1-96",			SSH_DIGEST, SSH_DIGEST_SHA1, 96, 0, 0, 0 },

@@ -91,6 +93,24 @@ static const struct macalg macs[] = {

 	{ NULL,					0, 0, 0, 0, 0, 0 }

 };

+static const struct macalg fips_macs[] = {

+	/* Encrypt-and-MAC (encrypt-and-authenticate) variants */

+	{ "hmac-sha1",				SSH_DIGEST, SSH_DIGEST_SHA1, 0, 0, 0, 0 },

+#ifdef HAVE_EVP_SHA256

+	{ "hmac-sha2-256",			SSH_DIGEST, SSH_DIGEST_SHA256, 0, 0, 0, 0 },

+	{ "hmac-sha2-512",			SSH_DIGEST, SSH_DIGEST_SHA512, 0, 0, 0, 0 },

+#endif

+

+	/* Encrypt-then-MAC variants */

+	{ "hmac-sha1-etm@openssh.com",		SSH_DIGEST, SSH_DIGEST_SHA1, 0, 0, 0, 1 },

+#ifdef HAVE_EVP_SHA256

+	{ "hmac-sha2-256-etm@openssh.com",	SSH_DIGEST, SSH_DIGEST_SHA256, 0, 0, 0, 1 },

+	{ "hmac-sha2-512-etm@openssh.com",	SSH_DIGEST, SSH_DIGEST_SHA512, 0, 0, 0, 1 },

+#endif

+

+	{ NULL,					0, 0, 0, 0, 0, 0 }

+};

+

 /* Returns a list of supported MACs separated by the specified char. */

 char *

 mac_alg_list(char sep)

@@ -99,7 +119,7 @@ mac_alg_list(char sep)

 	size_t nlen, rlen = 0;

 	const struct macalg *m;

-	for (m = macs; m->name != NULL; m++) {

+	for (m = FIPS_mode() ? fips_macs : all_macs; m->name != NULL; m++) {

 		if (ret != NULL)

 			ret[rlen++] = sep;

 		nlen = strlen(m->name);

@@ -133,7 +153,7 @@ mac_setup(Mac *mac, char *name)

 {

 	const struct macalg *m;

-	for (m = macs; m->name != NULL; m++) {

+	for (m = FIPS_mode() ? fips_macs : all_macs; m->name != NULL; m++) {

 		if (strcmp(name, m->name) != 0)

 			continue;

 		if (mac != NULL) {

diff --git a/myproposal.h b/myproposal.h

index b35b2b8..a608d27 100644

--- a/myproposal.h

+++ b/myproposal.h

@@ -140,6 +140,28 @@

 	"hmac-sha1-96," \

 	"hmac-md5-96"

+#define KEX_DEFAULT_KEX_FIPS		\

+	KEX_ECDH_METHODS \

+	KEX_SHA256_METHODS \

+	"diffie-hellman-group-exchange-sha1," \

+	"diffie-hellman-group14-sha1"

+#define	KEX_FIPS_ENCRYPT \

+	"aes128-ctr,aes192-ctr,aes256-ctr," \

+	"aes128-cbc,3des-cbc," \

+	"aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se"

+#ifdef HAVE_EVP_SHA256

+#define	KEX_FIPS_MAC \

+	"hmac-sha1," \

+	"hmac-sha2-256," \

+	"hmac-sha2-512," \

+	"hmac-sha1-etm@openssh.com," \

+	"hmac-sha2-256-etm@openssh.com," \

+	"hmac-sha2-512-etm@openssh.com"

+#else

+#define        KEX_FIPS_MAC \

+       "hmac-sha1"

+#endif

+

 #else

 #define KEX_SERVER_KEX		\

diff --git a/ssh.c b/ssh.c

index 26e9681..a0a7c29 100644

--- a/ssh.c

+++ b/ssh.c

@@ -75,6 +75,8 @@

 #include <openssl/evp.h>

 #include <openssl/err.h>

 #endif

+#include <openssl/fips.h>

+#include <fipscheck.h>

 #include "openbsd-compat/openssl-compat.h"

 #include "openbsd-compat/sys-queue.h"

@@ -433,6 +435,14 @@ main(int ac, char **av)

 	sanitise_stdfd();

 	__progname = ssh_get_progname(av[0]);

+        SSLeay_add_all_algorithms();

+	if (access("/etc/system-fips", F_OK) == 0)

+		if (! FIPSCHECK_verify(NULL, NULL)){

+			if (FIPS_mode())

+				fatal("FIPS integrity verification test failed.");

+			else

+				logit("FIPS integrity verification test failed.");

+	}

 #ifndef HAVE_SETPROCTITLE

 	/* Prepare for later setproctitle emulation */

@@ -510,6 +519,9 @@ main(int ac, char **av)

 	    "ACD:E:F:I:KL:MNO:PQ:R:S:TVw:W:XYy")) != -1) {

 		switch (opt) {

 		case '1':

+			if (FIPS_mode()) {

+				fatal("Protocol 1 not allowed in the FIPS mode.");

+			}

 			options.protocol = SSH_PROTO_1;

 			break;

 		case '2':

@@ -841,7 +853,6 @@ main(int ac, char **av)

 	host_arg = xstrdup(host);

 #ifdef WITH_OPENSSL

-	OpenSSL_add_all_algorithms();

 	ERR_load_crypto_strings();

 #endif

@@ -997,6 +1008,10 @@ main(int ac, char **av)

 	seed_rng();

+	if (FIPS_mode()) {

+		logit("FIPS mode initialized");

+	}

+

 	if (options.user == NULL)

 		options.user = xstrdup(pw->pw_name);

@@ -1069,6 +1084,12 @@ main(int ac, char **av)

 	timeout_ms = options.connection_timeout * 1000;

+	if (FIPS_mode()) {

+		options.protocol &= SSH_PROTO_2;

+		if (options.protocol == 0)

+			fatal("Protocol 2 disabled by configuration but required in the FIPS mode.");

+	}

+

 	/* Open a connection to the remote host. */

 	if (ssh_connect(host, addrs, &hostaddr, options.port,

 	    options.address_family, options.connection_attempts,

diff --git a/sshconnect2.c b/sshconnect2.c

index efe6158..5631f39 100644

--- a/sshconnect2.c

+++ b/sshconnect2.c

@@ -46,6 +46,8 @@

 #include <vis.h>

 #endif

+#include <openssl/fips.h>

+

 #include "openbsd-compat/sys-queue.h"

 #include "xmalloc.h"

@@ -171,20 +173,25 @@ ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)

 #ifdef GSSAPI

 	if (options.gss_keyex) {

-		/* Add the GSSAPI mechanisms currently supported on this 

-		 * client to the key exchange algorithm proposal */

-		orig = myproposal[PROPOSAL_KEX_ALGS];

+		if (FIPS_mode()) {

+			logit("Disabling GSSAPIKeyExchange. Not usable in FIPS mode");

+			options.gss_keyex = 0;

+		} else {

+			/* Add the GSSAPI mechanisms currently supported on this

+			 * client to the key exchange algorithm proposal */

+			orig = myproposal[PROPOSAL_KEX_ALGS];

-		if (options.gss_trust_dns)

-			gss_host = (char *)get_canonical_hostname(1);

-		else

-			gss_host = host;

+			if (options.gss_trust_dns)

+				gss_host = (char *)get_canonical_hostname(1);

+			else

+				gss_host = host;

-		gss = ssh_gssapi_client_mechanisms(gss_host, options.gss_client_identity);

-		if (gss) {

-			debug("Offering GSSAPI proposal: %s", gss);

-			xasprintf(&myproposal[PROPOSAL_KEX_ALGS],

-			    "%s,%s", gss, orig);

+			gss = ssh_gssapi_client_mechanisms(gss_host, options.gss_client_identity);

+			if (gss) {

+				debug("Offering GSSAPI proposal: %s", gss);

+				xasprintf(&myproposal[PROPOSAL_KEX_ALGS],

+				    "%s,%s", gss, orig);

+			}

 		}

 	}

 #endif

@@ -196,6 +203,10 @@ ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)

 	if (options.ciphers != NULL) {

 		myproposal[PROPOSAL_ENC_ALGS_CTOS] =

 		myproposal[PROPOSAL_ENC_ALGS_STOC] = options.ciphers;

+	} else if (FIPS_mode()) {

+		myproposal[PROPOSAL_ENC_ALGS_CTOS] =

+		myproposal[PROPOSAL_ENC_ALGS_STOC] = KEX_FIPS_ENCRYPT;

+

 	}

 	myproposal[PROPOSAL_ENC_ALGS_CTOS] =

 	    compat_cipher_proposal(myproposal[PROPOSAL_ENC_ALGS_CTOS]);

@@ -211,7 +222,11 @@ ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)

 	if (options.macs != NULL) {

 		myproposal[PROPOSAL_MAC_ALGS_CTOS] =

 		myproposal[PROPOSAL_MAC_ALGS_STOC] = options.macs;

+	} else if (FIPS_mode()) {

+		myproposal[PROPOSAL_MAC_ALGS_CTOS] =

+		myproposal[PROPOSAL_MAC_ALGS_STOC] = KEX_FIPS_MAC;

 	}

+

 	if (options.hostkeyalgorithms != NULL)

 		myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] =

 		    compat_pkalg_proposal(options.hostkeyalgorithms);

@@ -223,9 +238,11 @@ ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)

 	}

 	if (options.kex_algorithms != NULL)

 		myproposal[PROPOSAL_KEX_ALGS] = options.kex_algorithms;

+	else if (FIPS_mode())

+		myproposal[PROPOSAL_KEX_ALGS] = KEX_DEFAULT_KEX_FIPS;

+

 	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(

 	    myproposal[PROPOSAL_KEX_ALGS]);

-

 #ifdef GSSAPI

 	/* If we've got GSSAPI algorithms, then we also support the

 	 * 'null' hostkey, as a last resort */

diff --git a/sshd.c b/sshd.c

index db23ce2..3ce59f0 100644

--- a/sshd.c

+++ b/sshd.c

@@ -66,6 +66,7 @@

 #include <grp.h>

 #include <pwd.h>

 #include <signal.h>

+#include <syslog.h>

 #include <stdarg.h>

 #include <stdio.h>

 #include <stdlib.h>

@@ -76,6 +77,8 @@

 #include <openssl/dh.h>

 #include <openssl/bn.h>

 #include <openssl/rand.h>

+#include <openssl/fips.h>

+#include <fipscheck.h>

 #include "openbsd-compat/openssl-compat.h"

 #endif

@@ -1479,6 +1482,18 @@ main(int ac, char **av)

 #endif

 	__progname = ssh_get_progname(av[0]);

+        SSLeay_add_all_algorithms();

+	if (access("/etc/system-fips", F_OK) == 0)

+		if (! FIPSCHECK_verify(NULL, NULL)) {

+			openlog(__progname, LOG_PID, LOG_AUTHPRIV);

+			if (FIPS_mode()) {

+				syslog(LOG_CRIT, "FIPS integrity verification test failed.");

+				cleanup_exit(255);

+			}

+			else

+				syslog(LOG_INFO, "FIPS integrity verification test failed.");

+			closelog();

+		}

 	/* Save argv. Duplicate so setproctitle emulation doesn't clobber it */

 	saved_argc = ac;

 	rexec_argc = ac;

@@ -1630,7 +1645,7 @@ main(int ac, char **av)

 	else

 		closefrom(REEXEC_DEVCRYPTO_RESERVED_FD);

-#ifdef WITH_OPENSSL

+#if 0 /* FIPS */

 	OpenSSL_add_all_algorithms();

 #endif

@@ -1816,6 +1831,10 @@ main(int ac, char **av)

 		debug("private host key: #%d type %d %s", i, keytype,

 		    key_type(key ? key : pubkey));

 	}

+	if ((options.protocol & SSH_PROTO_1) && FIPS_mode()) {

+		logit("Disabling protocol version 1. Not allowed in the FIPS mode.");

+		options.protocol &= ~SSH_PROTO_1;

+	}

 	if ((options.protocol & SSH_PROTO_1) && !sensitive_data.have_ssh1_key) {

 		logit("Disabling protocol version 1. Could not load host key");

 		options.protocol &= ~SSH_PROTO_1;

@@ -1982,6 +2001,10 @@ main(int ac, char **av)

 	/* Reinitialize the log (because of the fork above). */

 	log_init(__progname, options.log_level, options.log_facility, log_stderr);

+	if (FIPS_mode()) {

+		logit("FIPS mode initialized");

+	}

+

 	/* Chdir to the root directory so that the current disk can be

 	   unmounted if desired. */

 	if (chdir("/") == -1)

@@ -2541,6 +2564,9 @@ do_ssh2_kex(void)

 	if (options.ciphers != NULL) {

 		myproposal[PROPOSAL_ENC_ALGS_CTOS] =

 		myproposal[PROPOSAL_ENC_ALGS_STOC] = options.ciphers;

+	} else if (FIPS_mode()) {

+		myproposal[PROPOSAL_ENC_ALGS_CTOS] =

+		myproposal[PROPOSAL_ENC_ALGS_STOC] = KEX_FIPS_ENCRYPT;

 	}

 	myproposal[PROPOSAL_ENC_ALGS_CTOS] =

 	    compat_cipher_proposal(myproposal[PROPOSAL_ENC_ALGS_CTOS]);

@@ -2550,6 +2576,9 @@ do_ssh2_kex(void)

 	if (options.macs != NULL) {

 		myproposal[PROPOSAL_MAC_ALGS_CTOS] =

 		myproposal[PROPOSAL_MAC_ALGS_STOC] = options.macs;

+	} else if (FIPS_mode()) {

+		myproposal[PROPOSAL_MAC_ALGS_CTOS] =

+		myproposal[PROPOSAL_MAC_ALGS_STOC] = KEX_FIPS_MAC;

 	}

 	if (options.compression == COMP_NONE) {

 		myproposal[PROPOSAL_COMP_ALGS_CTOS] =

@@ -2560,6 +2589,8 @@ do_ssh2_kex(void)

 	}

 	if (options.kex_algorithms != NULL)

 		myproposal[PROPOSAL_KEX_ALGS] = options.kex_algorithms;

+	else if (FIPS_mode())

+		myproposal[PROPOSAL_KEX_ALGS] = KEX_DEFAULT_KEX_FIPS;

 	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(

 	    myproposal[PROPOSAL_KEX_ALGS]);

@@ -2586,10 +2617,14 @@ do_ssh2_kex(void)

 	if (strlen(myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS]) == 0)

 		orig = NULL;

-	if (options.gss_keyex)

-		gss = ssh_gssapi_server_mechanisms();

-	else

-		gss = NULL;

+	if (options.gss_keyex) {

+		if (FIPS_mode()) {

+			logit("Disabling GSSAPIKeyExchange. Not usable in FIPS mode");

+			options.gss_keyex = 0;

+		} else {

+			gss = ssh_gssapi_server_mechanisms();

+		}

+	}

 	if (gss && orig)

 		xasprintf(&newstr, "%s,%s", gss, orig);

diff --git a/sshkey.c b/sshkey.c

index f078e11..5e3d97f 100644

--- a/sshkey.c

+++ b/sshkey.c

@@ -34,6 +34,7 @@

 #include <openssl/evp.h>

 #include <openssl/err.h>

 #include <openssl/pem.h>

+#include <openssl/fips.h>

 #include "crypto_api.h"

@@ -1523,6 +1524,8 @@ rsa_generate_private_key(u_int bits, RSA **rsap)

 	}

 	if (!BN_set_word(f4, RSA_F4) ||

 	    !RSA_generate_key_ex(private, bits, f4, NULL)) {

+			if (FIPS_mode())

+				logit("%s: the key length might be unsupported by FIPS mode approved key generation method", __func__);

 		ret = SSH_ERR_LIBCRYPTO_ERROR;

 		goto out;

 	}