From: Dr. Stephen Henson <steve@openssl.org>
Date: Thu, 19 May 2011 18:22:16 +0000 (+0000)
Subject: add FIPS support to ssl: doesn't do anything on this branch yet as there is no FIPS... 
X-Git-Tag: OpenSSL_1_0_1-beta1~310
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=7043fa702fa102a45b102e11990b650360c35503;p=oweals%2Fopenssl.git

add FIPS support to ssl: doesn't do anything on this branch yet as there is no FIPS compilation support
---

diff --git a/CHANGES b/CHANGES
index e9b946c358..9f37b80aa5 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,10 @@
 
  Changes between 1.0.0d and 1.0.1  [xx XXX xxxx]
 
+  *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
+     and enable MD5.
+     [Steve Henson]
+
   *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
      FIPS modules versions.
      [Steve Henson]
diff --git a/ssl/s23_clnt.c b/ssl/s23_clnt.c
index f49a95ba99..b3c48232d7 100644
--- a/ssl/s23_clnt.c
+++ b/ssl/s23_clnt.c
@@ -356,6 +356,14 @@ static int ssl23_client_hello(SSL *s)
 			version_major = TLS1_VERSION_MAJOR;
 			version_minor = TLS1_VERSION_MINOR;
 			}
+#ifdef OPENSSL_FIPS
+		else if(FIPS_mode())
+			{
+			SSLerr(SSL_F_SSL23_CLIENT_HELLO,
+					SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+			return -1;
+			}
+#endif
 		else if (version == SSL3_VERSION)
 			{
 			version_major = SSL3_VERSION_MAJOR;
@@ -639,6 +647,14 @@ static int ssl23_get_server_hello(SSL *s)
 		if ((p[2] == SSL3_VERSION_MINOR) &&
 			!(s->options & SSL_OP_NO_SSLv3))
 			{
+#ifdef OPENSSL_FIPS
+			if(FIPS_mode())
+				{
+				SSLerr(SSL_F_SSL23_GET_SERVER_HELLO,
+					SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+				goto err;
+				}
+#endif
 			s->version=SSL3_VERSION;
 			s->method=SSLv3_client_method();
 			}
diff --git a/ssl/s23_srvr.c b/ssl/s23_srvr.c
index b21c57a117..4877849013 100644
--- a/ssl/s23_srvr.c
+++ b/ssl/s23_srvr.c
@@ -115,6 +115,9 @@
 #include <openssl/rand.h>
 #include <openssl/objects.h>
 #include <openssl/evp.h>
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
 
 static const SSL_METHOD *ssl23_get_server_method(int ver);
 int ssl23_get_client_hello(SSL *s);
@@ -422,6 +425,15 @@ int ssl23_get_client_hello(SSL *s)
 			}
 		}
 
+#ifdef OPENSSL_FIPS
+	if (FIPS_mode() && (s->version < TLS1_VERSION))
+		{
+		SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,
+					SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+		goto err;
+		}
+#endif
+
 	if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
 		{
 		/* we have SSLv3/TLSv1 in an SSLv2 header
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index e7dea7d72b..fd131a6df8 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -156,6 +156,9 @@
 #include <openssl/objects.h>
 #include <openssl/evp.h>
 #include <openssl/md5.h>
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
 #ifndef OPENSSL_NO_DH
 #include <openssl/dh.h>
 #endif
@@ -1691,6 +1694,8 @@ fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
 			q=md_buf;
 			for (num=2; num > 0; num--)
 				{
+				EVP_MD_CTX_set_flags(&md_ctx,
+					EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 				EVP_DigestInit_ex(&md_ctx,(num == 2)
 					?s->ctx->md5:s->ctx->sha1, NULL);
 				EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
diff --git a/ssl/s3_enc.c b/ssl/s3_enc.c
index ac5ae40a7e..9f5574a01e 100644
--- a/ssl/s3_enc.c
+++ b/ssl/s3_enc.c
@@ -170,6 +170,7 @@ static int ssl3_generate_key_block(SSL *s, unsigned char *km, int num)
 #endif
 	k=0;
 	EVP_MD_CTX_init(&m5);
+	EVP_MD_CTX_set_flags(&m5, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 	EVP_MD_CTX_init(&s1);
 	for (i=0; (int)i<num; i+=MD5_DIGEST_LENGTH)
 		{
@@ -614,6 +615,13 @@ int ssl3_digest_cached_records(SSL *s)
 			{
 			s->s3->handshake_dgst[i]=EVP_MD_CTX_create();
 			EVP_DigestInit_ex(s->s3->handshake_dgst[i],md,NULL);
+#ifdef OPENSSL_FIPS
+			if (EVP_MD_nid(md) == NID_md5)
+				{
+				EVP_MD_CTX_set_flags(s->s3->handshake_dgst[i],
+						EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+				}
+#endif
 			EVP_DigestUpdate(s->s3->handshake_dgst[i],hdata,hdatalen);
 			} 
 		else 
@@ -669,6 +677,7 @@ static int ssl3_handshake_mac(SSL *s, int md_nid,
 		return 0;
 	}	
 	EVP_MD_CTX_init(&ctx);
+	EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 	EVP_MD_CTX_copy_ex(&ctx,d);
 	n=EVP_MD_CTX_size(&ctx);
 	if (n < 0)
diff --git a/ssl/s3_srvr.c b/ssl/s3_srvr.c
index 6300d5027a..9dc2a38750 100644
--- a/ssl/s3_srvr.c
+++ b/ssl/s3_srvr.c
@@ -1855,6 +1855,8 @@ int ssl3_send_server_key_exchange(SSL *s)
 					{
 					EVP_DigestInit_ex(&md_ctx,(num == 2)
 						?s->ctx->md5:s->ctx->sha1, NULL);
+					EVP_MD_CTX_set_flags(&md_ctx,
+						EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 					EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
 					EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
 					EVP_DigestUpdate(&md_ctx,&(d[4]),n);
diff --git a/ssl/ssl_ciph.c b/ssl/ssl_ciph.c
index 38d59774ef..87a9f68ce9 100644
--- a/ssl/ssl_ciph.c
+++ b/ssl/ssl_ciph.c
@@ -740,6 +740,9 @@ static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
 		c = ssl_method->get_cipher(i);
 		/* drop those that use any of that is not available */
 		if ((c != NULL) && c->valid &&
+#ifdef OPENSSL_FIPS
+		    (!FIPS_mode() || (c->algo_strength & SSL_FIPS)) &&
+#endif
 		    !(c->algorithm_mkey & disabled_mkey) &&
 		    !(c->algorithm_auth & disabled_auth) &&
 		    !(c->algorithm_enc & disabled_enc) &&
@@ -1439,7 +1442,11 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
 	 */
 	for (curr = head; curr != NULL; curr = curr->next)
 		{
+#ifdef OPENSSL_FIPS
+		if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
+#else
 		if (curr->active)
+#endif
 			{
 			sk_SSL_CIPHER_push(cipherstack, curr->cipher);
 #ifdef CIPHER_DEBUG
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 1c3e9454d6..b21b42927d 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1532,6 +1532,14 @@ SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
 		return(NULL);
 		}
 
+#ifdef OPENSSL_FIPS
+	if (FIPS_mode() && (meth->version < TLS1_VERSION))	
+		{
+		SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
+		return NULL;
+		}
+#endif
+
 	if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
 		{
 		SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index 994522effe..582b9ca165 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -320,6 +320,9 @@ static void sv_usage(void)
 	{
 	fprintf(stderr,"usage: ssltest [args ...]\n");
 	fprintf(stderr,"\n");
+#ifdef OPENSSL_FIPS
+	fprintf(stderr,"-F             - run test in FIPS mode\n");
+#endif
 	fprintf(stderr," -server_auth  - check server certificate\n");
 	fprintf(stderr," -client_auth  - do client authentication\n");
 	fprintf(stderr," -proxy        - allow proxy certificates\n");
@@ -550,6 +553,9 @@ int main(int argc, char *argv[])
 #endif
 	STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
 	int test_cipherlist = 0;
+#ifdef OPENSSL_FIPS
+	int fips_mode=0;
+#endif
 
 	verbose = 0;
 	debug = 0;
@@ -581,7 +587,16 @@ int main(int argc, char *argv[])
 
 	while (argc >= 1)
 		{
-		if	(strcmp(*argv,"-server_auth") == 0)
+		if(!strcmp(*argv,"-F"))
+			{
+#ifdef OPENSSL_FIPS
+			fips_mode=1;
+#else
+			fprintf(stderr,"not compiled with FIPS support, so exitting without running.\n");
+			EXIT(0);
+#endif
+			}
+		else if (strcmp(*argv,"-server_auth") == 0)
 			server_auth=1;
 		else if	(strcmp(*argv,"-client_auth") == 0)
 			client_auth=1;
@@ -791,6 +806,20 @@ bad:
 		EXIT(1);
 		}
 
+#ifdef OPENSSL_FIPS
+	if(fips_mode)
+		{
+		if(!FIPS_mode_set(1))
+			{
+			ERR_load_crypto_strings();
+			ERR_print_errors(BIO_new_fp(stderr,BIO_NOCLOSE));
+			EXIT(1);
+			}
+		else
+			fprintf(stderr,"*** IN FIPS MODE ***\n");
+		}
+#endif
+
 	if (print_time)
 		{
 		if (!bio_pair)
diff --git a/ssl/t1_enc.c b/ssl/t1_enc.c
index c60bccd2c0..36128dcf6b 100644
--- a/ssl/t1_enc.c
+++ b/ssl/t1_enc.c
@@ -171,6 +171,8 @@ static int tls1_P_hash(const EVP_MD *md, const unsigned char *sec,
 
 	EVP_MD_CTX_init(&ctx);
 	EVP_MD_CTX_init(&ctx_tmp);
+	EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+	EVP_MD_CTX_set_flags(&ctx_tmp, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
 	mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
 	if (!mac_key)
 		goto err;