2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
164 static const SSL_METHOD *ssl3_get_client_method(int ver);
165 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
167 #ifndef OPENSSL_NO_ECDH
168 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
171 static const SSL_METHOD *ssl3_get_client_method(int ver)
173 if (ver == SSL3_VERSION)
174 return(SSLv3_client_method());
179 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
180 ssl_undefined_function,
182 ssl3_get_client_method)
184 int ssl3_connect(SSL *s)
187 unsigned long Time=(unsigned long)time(NULL),l;
189 void (*cb)(const SSL *ssl,int type,int val)=NULL;
191 int new_state,state,skip=0;;
193 RAND_add(&Time,sizeof(Time),0);
197 if (s->info_callback != NULL)
199 else if (s->ctx->info_callback != NULL)
200 cb=s->ctx->info_callback;
203 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
211 case SSL_ST_RENEGOTIATE:
213 s->state=SSL_ST_CONNECT;
214 s->ctx->stats.sess_connect_renegotiate++;
218 case SSL_ST_BEFORE|SSL_ST_CONNECT:
219 case SSL_ST_OK|SSL_ST_CONNECT:
222 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
224 if ((s->version & 0xff00 ) != 0x0300)
226 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
231 /* s->version=SSL3_VERSION; */
232 s->type=SSL_ST_CONNECT;
234 if (s->init_buf == NULL)
236 if ((buf=BUF_MEM_new()) == NULL)
241 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
250 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
252 /* setup buffing BIO */
253 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
255 /* don't push the buffering BIO quite yet */
257 ssl3_init_finished_mac(s);
259 s->state=SSL3_ST_CW_CLNT_HELLO_A;
260 s->ctx->stats.sess_connect++;
264 case SSL3_ST_CW_CLNT_HELLO_A:
265 case SSL3_ST_CW_CLNT_HELLO_B:
268 ret=ssl3_client_hello(s);
269 if (ret <= 0) goto end;
270 s->state=SSL3_ST_CR_SRVR_HELLO_A;
273 /* turn on buffering for the next lot of output */
274 if (s->bbio != s->wbio)
275 s->wbio=BIO_push(s->bbio,s->wbio);
279 case SSL3_ST_CR_SRVR_HELLO_A:
280 case SSL3_ST_CR_SRVR_HELLO_B:
281 ret=ssl3_get_server_hello(s);
282 if (ret <= 0) goto end;
285 s->state=SSL3_ST_CR_FINISHED_A;
287 s->state=SSL3_ST_CR_CERT_A;
291 case SSL3_ST_CR_CERT_A:
292 case SSL3_ST_CR_CERT_B:
293 /* Check if it is anon DH/ECDH */
295 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)
296 && !(s->s3->tmp.new_cipher->algorithms & SSL_kPSK))
298 ret=ssl3_get_server_certificate(s);
299 if (ret <= 0) goto end;
303 s->state=SSL3_ST_CR_KEY_EXCH_A;
307 case SSL3_ST_CR_KEY_EXCH_A:
308 case SSL3_ST_CR_KEY_EXCH_B:
309 ret=ssl3_get_key_exchange(s);
310 if (ret <= 0) goto end;
311 s->state=SSL3_ST_CR_CERT_REQ_A;
314 /* at this point we check that we have the
315 * required stuff from the server */
316 if (!ssl3_check_cert_and_algorithm(s))
323 case SSL3_ST_CR_CERT_REQ_A:
324 case SSL3_ST_CR_CERT_REQ_B:
325 ret=ssl3_get_certificate_request(s);
326 if (ret <= 0) goto end;
327 s->state=SSL3_ST_CR_SRVR_DONE_A;
331 case SSL3_ST_CR_SRVR_DONE_A:
332 case SSL3_ST_CR_SRVR_DONE_B:
333 ret=ssl3_get_server_done(s);
334 if (ret <= 0) goto end;
335 if (s->s3->tmp.cert_req)
336 s->state=SSL3_ST_CW_CERT_A;
338 s->state=SSL3_ST_CW_KEY_EXCH_A;
343 case SSL3_ST_CW_CERT_A:
344 case SSL3_ST_CW_CERT_B:
345 case SSL3_ST_CW_CERT_C:
346 case SSL3_ST_CW_CERT_D:
347 ret=ssl3_send_client_certificate(s);
348 if (ret <= 0) goto end;
349 s->state=SSL3_ST_CW_KEY_EXCH_A;
353 case SSL3_ST_CW_KEY_EXCH_A:
354 case SSL3_ST_CW_KEY_EXCH_B:
355 ret=ssl3_send_client_key_exchange(s);
356 if (ret <= 0) goto end;
357 l=s->s3->tmp.new_cipher->algorithms;
358 /* EAY EAY EAY need to check for DH fix cert
360 /* For TLS, cert_req is set to 2, so a cert chain
361 * of nothing is sent, but no verify packet is sent */
362 /* XXX: For now, we do not support client
363 * authentication in ECDH cipher suites with
364 * ECDH (rather than ECDSA) certificates.
365 * We need to skip the certificate verify
366 * message when client's ECDH public key is sent
367 * inside the client certificate.
369 if (s->s3->tmp.cert_req == 1)
371 s->state=SSL3_ST_CW_CERT_VRFY_A;
375 s->state=SSL3_ST_CW_CHANGE_A;
376 s->s3->change_cipher_spec=0;
382 case SSL3_ST_CW_CERT_VRFY_A:
383 case SSL3_ST_CW_CERT_VRFY_B:
384 ret=ssl3_send_client_verify(s);
385 if (ret <= 0) goto end;
386 s->state=SSL3_ST_CW_CHANGE_A;
388 s->s3->change_cipher_spec=0;
391 case SSL3_ST_CW_CHANGE_A:
392 case SSL3_ST_CW_CHANGE_B:
393 ret=ssl3_send_change_cipher_spec(s,
394 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
395 if (ret <= 0) goto end;
396 s->state=SSL3_ST_CW_FINISHED_A;
399 s->session->cipher=s->s3->tmp.new_cipher;
400 #ifdef OPENSSL_NO_COMP
401 s->session->compress_meth=0;
403 if (s->s3->tmp.new_compression == NULL)
404 s->session->compress_meth=0;
406 s->session->compress_meth=
407 s->s3->tmp.new_compression->id;
409 if (!s->method->ssl3_enc->setup_key_block(s))
415 if (!s->method->ssl3_enc->change_cipher_state(s,
416 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
424 case SSL3_ST_CW_FINISHED_A:
425 case SSL3_ST_CW_FINISHED_B:
426 ret=ssl3_send_finished(s,
427 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
428 s->method->ssl3_enc->client_finished_label,
429 s->method->ssl3_enc->client_finished_label_len);
430 if (ret <= 0) goto end;
431 s->state=SSL3_ST_CW_FLUSH;
434 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
437 s->s3->tmp.next_state=SSL_ST_OK;
438 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
441 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
442 s->s3->delay_buf_pop_ret=0;
447 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
452 case SSL3_ST_CR_FINISHED_A:
453 case SSL3_ST_CR_FINISHED_B:
455 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
456 SSL3_ST_CR_FINISHED_B);
457 if (ret <= 0) goto end;
460 s->state=SSL3_ST_CW_CHANGE_A;
466 case SSL3_ST_CW_FLUSH:
467 /* number of bytes to be flushed */
468 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
471 s->rwstate=SSL_WRITING;
472 num1=BIO_flush(s->wbio);
473 if (num1 <= 0) { ret= -1; goto end; }
474 s->rwstate=SSL_NOTHING;
477 s->state=s->s3->tmp.next_state;
481 /* clean a few things up */
482 ssl3_cleanup_key_block(s);
484 if (s->init_buf != NULL)
486 BUF_MEM_free(s->init_buf);
490 /* If we are not 'joining' the last two packets,
491 * remove the buffering now */
492 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
493 ssl_free_wbio_buffer(s);
494 /* else do it later in ssl3_write */
499 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
500 if (s->hit) s->ctx->stats.sess_hit++;
504 s->handshake_func=ssl3_connect;
505 s->ctx->stats.sess_connect_good++;
507 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
513 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
519 /* did we do anything */
520 if (!s->s3->tmp.reuse_message && !skip)
524 if ((ret=BIO_flush(s->wbio)) <= 0)
528 if ((cb != NULL) && (s->state != state))
532 cb(s,SSL_CB_CONNECT_LOOP,1);
543 cb(s,SSL_CB_CONNECT_EXIT,ret);
548 int ssl3_client_hello(SSL *s)
553 unsigned long Time,l;
554 #ifndef OPENSSL_NO_COMP
559 buf=(unsigned char *)s->init_buf->data;
560 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
562 if ((s->session == NULL) ||
563 (s->session->ssl_version != s->version) ||
564 (s->session->not_resumable))
566 if (!ssl_get_new_session(s,0))
569 /* else use the pre-loaded session */
571 p=s->s3->client_random;
572 Time=(unsigned long)time(NULL); /* Time */
574 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
577 /* Do the message type and length last */
580 *(p++)=s->version>>8;
581 *(p++)=s->version&0xff;
582 s->client_version=s->version;
585 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
592 i=s->session->session_id_length;
596 if (i > (int)sizeof(s->session->session_id))
598 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
601 memcpy(p,s->session->session_id,i);
605 /* Ciphers supported */
606 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
609 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
616 #ifdef OPENSSL_NO_COMP
620 if ((s->options & SSL_OP_NO_COMPRESSION)
621 || !s->ctx->comp_methods)
624 j=sk_SSL_COMP_num(s->ctx->comp_methods);
628 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
632 *(p++)=0; /* Add the NULL method */
633 #ifndef OPENSSL_NO_TLSEXT
634 if (ssl_prepare_clienthello_tlsext(s) <= 0)
636 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
639 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
641 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
648 *(d++)=SSL3_MT_CLIENT_HELLO;
651 s->state=SSL3_ST_CW_CLNT_HELLO_B;
652 /* number of bytes to write */
657 /* SSL3_ST_CW_CLNT_HELLO_B */
658 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
663 int ssl3_get_server_hello(SSL *s)
665 STACK_OF(SSL_CIPHER) *sk;
671 #ifndef OPENSSL_NO_COMP
675 n=s->method->ssl_get_message(s,
676 SSL3_ST_CR_SRVR_HELLO_A,
677 SSL3_ST_CR_SRVR_HELLO_B,
682 if (!ok) return((int)n);
684 if ( SSL_version(s) == DTLS1_VERSION)
686 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
688 if ( s->d1->send_cookie == 0)
690 s->s3->tmp.reuse_message = 1;
693 else /* already sent a cookie */
695 al=SSL_AD_UNEXPECTED_MESSAGE;
696 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
702 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
704 al=SSL_AD_UNEXPECTED_MESSAGE;
705 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
709 d=p=(unsigned char *)s->init_msg;
711 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
713 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
714 s->version=(s->version&0xff00)|p[1];
715 al=SSL_AD_PROTOCOL_VERSION;
720 /* load the server hello data */
721 /* load the server random */
722 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
725 /* get the session-id */
728 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
730 al=SSL_AD_ILLEGAL_PARAMETER;
731 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
735 if (j != 0 && j == s->session->session_id_length
736 && memcmp(p,s->session->session_id,j) == 0)
738 if(s->sid_ctx_length != s->session->sid_ctx_length
739 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
741 /* actually a client application bug */
742 al=SSL_AD_ILLEGAL_PARAMETER;
743 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
748 else /* a miss or crap from the other end */
750 /* If we were trying for session-id reuse, make a new
751 * SSL_SESSION so we don't stuff up other people */
753 if (s->session->session_id_length > 0)
755 if (!ssl_get_new_session(s,0))
757 al=SSL_AD_INTERNAL_ERROR;
761 s->session->session_id_length=j;
762 memcpy(s->session->session_id,p,j); /* j could be 0 */
765 c=ssl_get_cipher_by_char(s,p);
769 al=SSL_AD_ILLEGAL_PARAMETER;
770 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
773 p+=ssl_put_cipher_by_char(s,NULL,NULL);
775 sk=ssl_get_ciphers_by_id(s);
776 i=sk_SSL_CIPHER_find(sk,c);
779 /* we did not say we would use this cipher */
780 al=SSL_AD_ILLEGAL_PARAMETER;
781 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
785 /* Depending on the session caching (internal/external), the cipher
786 and/or cipher_id values may not be set. Make sure that
787 cipher_id is set and use it for comparison. */
788 if (s->session->cipher)
789 s->session->cipher_id = s->session->cipher->id;
790 if (s->hit && (s->session->cipher_id != c->id))
793 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
795 al=SSL_AD_ILLEGAL_PARAMETER;
796 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
800 s->s3->tmp.new_cipher=c;
802 /* lets get the compression algorithm */
804 #ifdef OPENSSL_NO_COMP
807 al=SSL_AD_ILLEGAL_PARAMETER;
808 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
813 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
816 comp=ssl3_comp_find(s->ctx->comp_methods,j);
818 if ((j != 0) && (comp == NULL))
820 al=SSL_AD_ILLEGAL_PARAMETER;
821 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
826 s->s3->tmp.new_compression=comp;
829 #ifndef OPENSSL_NO_TLSEXT
831 if (s->version > SSL3_VERSION)
833 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
835 /* 'al' set by ssl_parse_serverhello_tlsext */
836 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
839 if (ssl_check_serverhello_tlsext(s) <= 0)
841 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SERVERHELLO_TLSEXT);
849 /* wrong packet length */
850 al=SSL_AD_DECODE_ERROR;
851 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
857 ssl3_send_alert(s,SSL3_AL_FATAL,al);
862 int ssl3_get_server_certificate(SSL *s)
865 unsigned long n,nc,llen,l;
867 const unsigned char *q,*p;
869 STACK_OF(X509) *sk=NULL;
872 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
874 n=s->method->ssl_get_message(s,
881 if (!ok) return((int)n);
883 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
885 s->s3->tmp.reuse_message=1;
889 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
891 al=SSL_AD_UNEXPECTED_MESSAGE;
892 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
895 p=d=(unsigned char *)s->init_msg;
897 if ((sk=sk_X509_new_null()) == NULL)
899 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
906 al=SSL_AD_DECODE_ERROR;
907 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
910 for (nc=0; nc<llen; )
915 al=SSL_AD_DECODE_ERROR;
916 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
921 x=d2i_X509(NULL,&q,l);
924 al=SSL_AD_BAD_CERTIFICATE;
925 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
930 al=SSL_AD_DECODE_ERROR;
931 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
934 if (!sk_X509_push(sk,x))
936 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
944 i=ssl_verify_cert_chain(s,sk);
945 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
946 #ifndef OPENSSL_NO_KRB5
947 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
948 != (SSL_aKRB5|SSL_kKRB5)
949 #endif /* OPENSSL_NO_KRB5 */
952 al=ssl_verify_alarm_type(s->verify_result);
953 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
956 ERR_clear_error(); /* but we keep s->verify_result */
958 sc=ssl_sess_cert_new();
959 if (sc == NULL) goto err;
961 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
962 s->session->sess_cert=sc;
965 /* Inconsistency alert: cert_chain does include the peer's
966 * certificate, which we don't include in s3_srvr.c */
967 x=sk_X509_value(sk,0);
969 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
971 pkey=X509_get_pubkey(x);
973 /* VRS: allow null cert if auth == KRB5 */
974 need_cert = ((s->s3->tmp.new_cipher->algorithms
975 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
976 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
979 printf("pkey,x = %p, %p\n", pkey,x);
980 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
981 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
982 s->s3->tmp.new_cipher->algorithms, need_cert);
983 #endif /* KSSL_DEBUG */
985 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
989 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
990 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
994 i=ssl_cert_type(x,pkey);
995 if (need_cert && i < 0)
999 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1000 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1006 sc->peer_cert_type=i;
1007 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1008 /* Why would the following ever happen?
1009 * We just created sc a couple of lines ago. */
1010 if (sc->peer_pkeys[i].x509 != NULL)
1011 X509_free(sc->peer_pkeys[i].x509);
1012 sc->peer_pkeys[i].x509=x;
1013 sc->peer_key= &(sc->peer_pkeys[i]);
1015 if (s->session->peer != NULL)
1016 X509_free(s->session->peer);
1017 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1022 sc->peer_cert_type=i;
1025 if (s->session->peer != NULL)
1026 X509_free(s->session->peer);
1027 s->session->peer=NULL;
1029 s->session->verify_result = s->verify_result;
1037 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1040 EVP_PKEY_free(pkey);
1042 sk_X509_pop_free(sk,X509_free);
1046 int ssl3_get_key_exchange(SSL *s)
1048 #ifndef OPENSSL_NO_RSA
1049 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1052 unsigned char *param,*p;
1053 int al,i,j,param_len,ok;
1055 EVP_PKEY *pkey=NULL;
1056 #ifndef OPENSSL_NO_RSA
1059 #ifndef OPENSSL_NO_DH
1062 #ifndef OPENSSL_NO_ECDH
1063 EC_KEY *ecdh = NULL;
1064 BN_CTX *bn_ctx = NULL;
1065 EC_POINT *srvr_ecpoint = NULL;
1067 int encoded_pt_len = 0;
1070 /* use same message size as in ssl3_get_certificate_request()
1071 * as ServerKeyExchange message may be skipped */
1072 n=s->method->ssl_get_message(s,
1073 SSL3_ST_CR_KEY_EXCH_A,
1074 SSL3_ST_CR_KEY_EXCH_B,
1078 if (!ok) return((int)n);
1080 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1082 #ifndef OPENSSL_NO_PSK
1083 /* In plain PSK ciphersuite, ServerKeyExchange can be
1084 omitted if no identity hint is sent. Set
1085 session->sess_cert anyway to avoid problems
1087 if (s->s3->tmp.new_cipher->algorithms & SSL_kPSK)
1089 s->session->sess_cert=ssl_sess_cert_new();
1090 if (s->ctx->psk_identity_hint)
1091 OPENSSL_free(s->ctx->psk_identity_hint);
1092 s->ctx->psk_identity_hint = NULL;
1095 s->s3->tmp.reuse_message=1;
1099 param=p=(unsigned char *)s->init_msg;
1100 if (s->session->sess_cert != NULL)
1102 #ifndef OPENSSL_NO_RSA
1103 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1105 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1106 s->session->sess_cert->peer_rsa_tmp=NULL;
1109 #ifndef OPENSSL_NO_DH
1110 if (s->session->sess_cert->peer_dh_tmp)
1112 DH_free(s->session->sess_cert->peer_dh_tmp);
1113 s->session->sess_cert->peer_dh_tmp=NULL;
1116 #ifndef OPENSSL_NO_ECDH
1117 if (s->session->sess_cert->peer_ecdh_tmp)
1119 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1120 s->session->sess_cert->peer_ecdh_tmp=NULL;
1126 s->session->sess_cert=ssl_sess_cert_new();
1130 alg=s->s3->tmp.new_cipher->algorithms;
1131 EVP_MD_CTX_init(&md_ctx);
1133 #ifndef OPENSSL_NO_PSK
1136 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1138 al=SSL_AD_HANDSHAKE_FAILURE;
1141 /* Store PSK identity hint for later use, hint is used
1142 * in ssl3_send_client_key_exchange. Assume that the
1143 * maximum length of a PSK identity hint can be as
1144 * long as the maximum length of a PSK identity. */
1145 if (i > PSK_MAX_IDENTITY_LEN)
1147 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1148 SSL_R_DATA_LENGTH_TOO_LONG);
1153 al=SSL_AD_DECODE_ERROR;
1154 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1155 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1158 /* If received PSK identity hint contains NULL
1159 * characters, the hint is truncated from the first
1160 * NULL. p may not be ending with NULL, so create a
1161 * NULL-terminated string. */
1162 memcpy(tmp_id_hint, p, i);
1163 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1164 if (s->ctx->psk_identity_hint != NULL)
1165 OPENSSL_free(s->ctx->psk_identity_hint);
1166 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1167 if (s->ctx->psk_identity_hint == NULL)
1169 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1177 #endif /* !OPENSSL_NO_PSK */
1178 #ifndef OPENSSL_NO_RSA
1181 if ((rsa=RSA_new()) == NULL)
1183 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1190 al=SSL_AD_DECODE_ERROR;
1191 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1194 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1196 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1205 al=SSL_AD_DECODE_ERROR;
1206 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1209 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1211 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1217 /* this should be because we are using an export cipher */
1219 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1222 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1225 s->session->sess_cert->peer_rsa_tmp=rsa;
1228 #else /* OPENSSL_NO_RSA */
1232 #ifndef OPENSSL_NO_DH
1233 else if (alg & SSL_kEDH)
1235 if ((dh=DH_new()) == NULL)
1237 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1244 al=SSL_AD_DECODE_ERROR;
1245 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1248 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1250 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1259 al=SSL_AD_DECODE_ERROR;
1260 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1263 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1265 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1274 al=SSL_AD_DECODE_ERROR;
1275 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1278 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1280 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1286 #ifndef OPENSSL_NO_RSA
1288 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1293 #ifndef OPENSSL_NO_DSA
1294 else if (alg & SSL_aDSS)
1295 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1297 /* else anonymous DH, so no certificate or pkey. */
1299 s->session->sess_cert->peer_dh_tmp=dh;
1302 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1304 al=SSL_AD_ILLEGAL_PARAMETER;
1305 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1308 #endif /* !OPENSSL_NO_DH */
1310 #ifndef OPENSSL_NO_ECDH
1311 else if (alg & SSL_kECDHE)
1314 const EC_GROUP *group;
1316 if ((ecdh=EC_KEY_new()) == NULL)
1318 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1322 /* Extract elliptic curve parameters and the
1323 * server's ephemeral ECDH public key.
1324 * Keep accumulating lengths of various components in
1325 * param_len and make sure it never exceeds n.
1328 /* XXX: For now we only support named (not generic) curves
1329 * and the ECParameters in this case is just three bytes.
1332 if ((param_len > n) ||
1333 (*p != NAMED_CURVE_TYPE) ||
1334 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1336 al=SSL_AD_INTERNAL_ERROR;
1337 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1341 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1344 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1347 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1349 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1352 EC_GROUP_free(ngroup);
1354 group = EC_KEY_get0_group(ecdh);
1356 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1357 (EC_GROUP_get_degree(group) > 163))
1359 al=SSL_AD_EXPORT_RESTRICTION;
1360 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1366 /* Next, get the encoded ECPoint */
1367 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1368 ((bn_ctx = BN_CTX_new()) == NULL))
1370 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1374 encoded_pt_len = *p; /* length of encoded point */
1376 param_len += (1 + encoded_pt_len);
1377 if ((param_len > n) ||
1378 (EC_POINT_oct2point(group, srvr_ecpoint,
1379 p, encoded_pt_len, bn_ctx) == 0))
1381 al=SSL_AD_DECODE_ERROR;
1382 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1389 /* The ECC/TLS specification does not mention
1390 * the use of DSA to sign ECParameters in the server
1391 * key exchange message. We do support RSA and ECDSA.
1394 #ifndef OPENSSL_NO_RSA
1395 else if (alg & SSL_aRSA)
1396 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1398 #ifndef OPENSSL_NO_ECDSA
1399 else if (alg & SSL_aECDSA)
1400 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1402 /* else anonymous ECDH, so no certificate or pkey. */
1403 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1404 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1406 BN_CTX_free(bn_ctx);
1407 EC_POINT_free(srvr_ecpoint);
1408 srvr_ecpoint = NULL;
1410 else if (alg & SSL_kECDH)
1412 al=SSL_AD_UNEXPECTED_MESSAGE;
1413 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1416 #endif /* !OPENSSL_NO_ECDH */
1419 al=SSL_AD_HANDSHAKE_FAILURE;
1420 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1425 /* p points to the next byte, there are 'n' bytes left */
1427 /* if it was signed, check the signature */
1432 j=EVP_PKEY_size(pkey);
1434 if ((i != n) || (n > j) || (n <= 0))
1436 /* wrong packet length */
1437 al=SSL_AD_DECODE_ERROR;
1438 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1442 #ifndef OPENSSL_NO_RSA
1443 if (pkey->type == EVP_PKEY_RSA)
1449 for (num=2; num > 0; num--)
1451 EVP_DigestInit_ex(&md_ctx,(num == 2)
1452 ?s->ctx->md5:s->ctx->sha1, NULL);
1453 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1454 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1455 EVP_DigestUpdate(&md_ctx,param,param_len);
1456 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1460 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1464 al=SSL_AD_DECRYPT_ERROR;
1465 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1471 al=SSL_AD_DECRYPT_ERROR;
1472 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1478 #ifndef OPENSSL_NO_DSA
1479 if (pkey->type == EVP_PKEY_DSA)
1482 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1483 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1484 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1485 EVP_VerifyUpdate(&md_ctx,param,param_len);
1486 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1489 al=SSL_AD_DECRYPT_ERROR;
1490 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1496 #ifndef OPENSSL_NO_ECDSA
1497 if (pkey->type == EVP_PKEY_EC)
1499 /* let's do ECDSA */
1500 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1501 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1502 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1503 EVP_VerifyUpdate(&md_ctx,param,param_len);
1504 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1507 al=SSL_AD_DECRYPT_ERROR;
1508 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1515 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1521 if (!(alg & SSL_aNULL) && !(alg & SSL_kPSK))
1522 /* aNULL or kPSK do not need public keys */
1524 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1527 /* still data left over */
1530 al=SSL_AD_DECODE_ERROR;
1531 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1535 EVP_PKEY_free(pkey);
1536 EVP_MD_CTX_cleanup(&md_ctx);
1539 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1541 EVP_PKEY_free(pkey);
1542 #ifndef OPENSSL_NO_RSA
1546 #ifndef OPENSSL_NO_DH
1550 #ifndef OPENSSL_NO_ECDH
1551 BN_CTX_free(bn_ctx);
1552 EC_POINT_free(srvr_ecpoint);
1556 EVP_MD_CTX_cleanup(&md_ctx);
1560 int ssl3_get_certificate_request(SSL *s)
1563 unsigned long n,nc,l;
1564 unsigned int llen,ctype_num,i;
1566 const unsigned char *p,*q;
1568 STACK_OF(X509_NAME) *ca_sk=NULL;
1570 n=s->method->ssl_get_message(s,
1571 SSL3_ST_CR_CERT_REQ_A,
1572 SSL3_ST_CR_CERT_REQ_B,
1577 if (!ok) return((int)n);
1579 s->s3->tmp.cert_req=0;
1581 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1583 s->s3->tmp.reuse_message=1;
1587 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1589 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1590 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1594 /* TLS does not like anon-DH with client cert */
1595 if (s->version > SSL3_VERSION)
1597 l=s->s3->tmp.new_cipher->algorithms;
1600 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1601 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1606 p=d=(unsigned char *)s->init_msg;
1608 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1610 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1614 /* get the certificate types */
1616 if (ctype_num > SSL3_CT_NUMBER)
1617 ctype_num=SSL3_CT_NUMBER;
1618 for (i=0; i<ctype_num; i++)
1619 s->s3->tmp.ctype[i]= p[i];
1622 /* get the CA RDNs */
1627 out=fopen("/tmp/vsign.der","w");
1628 fwrite(p,1,llen,out);
1633 if ((llen+ctype_num+2+1) != n)
1635 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1636 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1640 for (nc=0; nc<llen; )
1643 if ((l+nc+2) > llen)
1645 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1646 goto cont; /* netscape bugs */
1647 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1648 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1654 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1656 /* If netscape tolerance is on, ignore errors */
1657 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1661 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1662 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1669 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1670 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1673 if (!sk_X509_NAME_push(ca_sk,xn))
1675 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1689 /* we should setup a certificate to return.... */
1690 s->s3->tmp.cert_req=1;
1691 s->s3->tmp.ctype_num=ctype_num;
1692 if (s->s3->tmp.ca_names != NULL)
1693 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1694 s->s3->tmp.ca_names=ca_sk;
1699 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1703 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1705 return(X509_NAME_cmp(*a,*b));
1708 int ssl3_get_server_done(SSL *s)
1713 n=s->method->ssl_get_message(s,
1714 SSL3_ST_CR_SRVR_DONE_A,
1715 SSL3_ST_CR_SRVR_DONE_B,
1716 SSL3_MT_SERVER_DONE,
1717 30, /* should be very small, like 0 :-) */
1720 if (!ok) return((int)n);
1723 /* should contain no data */
1724 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1725 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1733 int ssl3_send_client_key_exchange(SSL *s)
1735 unsigned char *p,*d;
1738 #ifndef OPENSSL_NO_RSA
1740 EVP_PKEY *pkey=NULL;
1742 #ifndef OPENSSL_NO_KRB5
1744 #endif /* OPENSSL_NO_KRB5 */
1745 #ifndef OPENSSL_NO_ECDH
1746 EC_KEY *clnt_ecdh = NULL;
1747 const EC_POINT *srvr_ecpoint = NULL;
1748 EVP_PKEY *srvr_pub_pkey = NULL;
1749 unsigned char *encodedPoint = NULL;
1750 int encoded_pt_len = 0;
1751 BN_CTX * bn_ctx = NULL;
1754 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1756 d=(unsigned char *)s->init_buf->data;
1759 l=s->s3->tmp.new_cipher->algorithms;
1761 /* Fool emacs indentation */
1763 #ifndef OPENSSL_NO_RSA
1764 else if (l & SSL_kRSA)
1767 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1769 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1770 rsa=s->session->sess_cert->peer_rsa_tmp;
1773 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1774 if ((pkey == NULL) ||
1775 (pkey->type != EVP_PKEY_RSA) ||
1776 (pkey->pkey.rsa == NULL))
1778 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1782 EVP_PKEY_free(pkey);
1785 tmp_buf[0]=s->client_version>>8;
1786 tmp_buf[1]=s->client_version&0xff;
1787 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1790 s->session->master_key_length=sizeof tmp_buf;
1793 /* Fix buf for TLS and beyond */
1794 if (s->version > SSL3_VERSION)
1796 n=RSA_public_encrypt(sizeof tmp_buf,
1797 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1799 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1800 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1804 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1808 /* Fix buf for TLS and beyond */
1809 if (s->version > SSL3_VERSION)
1815 s->session->master_key_length=
1816 s->method->ssl3_enc->generate_master_secret(s,
1817 s->session->master_key,
1818 tmp_buf,sizeof tmp_buf);
1819 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1822 #ifndef OPENSSL_NO_KRB5
1823 else if (l & SSL_kKRB5)
1825 krb5_error_code krb5rc;
1826 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1827 /* krb5_data krb5_ap_req; */
1828 krb5_data *enc_ticket;
1829 krb5_data authenticator, *authp = NULL;
1830 EVP_CIPHER_CTX ciph_ctx;
1831 EVP_CIPHER *enc = NULL;
1832 unsigned char iv[EVP_MAX_IV_LENGTH];
1833 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1834 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1835 + EVP_MAX_IV_LENGTH];
1836 int padl, outl = sizeof(epms);
1838 EVP_CIPHER_CTX_init(&ciph_ctx);
1841 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1843 #endif /* KSSL_DEBUG */
1847 if (KRB5SENDAUTH) authp = &authenticator;
1848 #endif /* KRB5SENDAUTH */
1850 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1852 enc = kssl_map_enc(kssl_ctx->enctype);
1857 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1858 if (krb5rc && kssl_err.text)
1859 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1861 #endif /* KSSL_DEBUG */
1865 ssl3_send_alert(s,SSL3_AL_FATAL,
1866 SSL_AD_HANDSHAKE_FAILURE);
1867 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1872 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1873 ** in place of RFC 2712 KerberosWrapper, as in:
1875 ** Send ticket (copy to *p, set n = length)
1876 ** n = krb5_ap_req.length;
1877 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1878 ** if (krb5_ap_req.data)
1879 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1881 ** Now using real RFC 2712 KerberosWrapper
1882 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1883 ** Note: 2712 "opaque" types are here replaced
1884 ** with a 2-byte length followed by the value.
1886 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1887 ** Where "xx xx" = length bytes. Shown here with
1888 ** optional authenticator omitted.
1891 /* KerberosWrapper.Ticket */
1892 s2n(enc_ticket->length,p);
1893 memcpy(p, enc_ticket->data, enc_ticket->length);
1894 p+= enc_ticket->length;
1895 n = enc_ticket->length + 2;
1897 /* KerberosWrapper.Authenticator */
1898 if (authp && authp->length)
1900 s2n(authp->length,p);
1901 memcpy(p, authp->data, authp->length);
1903 n+= authp->length + 2;
1911 s2n(0,p);/* null authenticator length */
1915 if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
1918 /* 20010420 VRS. Tried it this way; failed.
1919 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1920 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1921 ** kssl_ctx->length);
1922 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1925 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1926 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1928 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1930 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1932 if (outl > sizeof epms)
1934 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1937 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1939 /* KerberosWrapper.EncryptedPreMasterSecret */
1941 memcpy(p, epms, outl);
1945 s->session->master_key_length=
1946 s->method->ssl3_enc->generate_master_secret(s,
1947 s->session->master_key,
1948 tmp_buf, sizeof tmp_buf);
1950 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
1951 OPENSSL_cleanse(epms, outl);
1954 #ifndef OPENSSL_NO_DH
1955 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1957 DH *dh_srvr,*dh_clnt;
1959 if (s->session->sess_cert->peer_dh_tmp != NULL)
1960 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1963 /* we get them from the cert */
1964 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1965 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1969 /* generate a new random key */
1970 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1972 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1975 if (!DH_generate_key(dh_clnt))
1977 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1981 /* use the 'p' output buffer for the DH key, but
1982 * make sure to clear it out afterwards */
1984 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1988 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1992 /* generate master key from the result */
1993 s->session->master_key_length=
1994 s->method->ssl3_enc->generate_master_secret(s,
1995 s->session->master_key,p,n);
1999 /* send off the data */
2000 n=BN_num_bytes(dh_clnt->pub_key);
2002 BN_bn2bin(dh_clnt->pub_key,p);
2007 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2011 #ifndef OPENSSL_NO_ECDH
2012 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2014 const EC_GROUP *srvr_group = NULL;
2016 int ecdh_clnt_cert = 0;
2019 /* Did we send out the client's
2020 * ECDH share for use in premaster
2021 * computation as part of client certificate?
2022 * If so, set ecdh_clnt_cert to 1.
2024 if ((l & SSL_kECDH) && (s->cert != NULL))
2026 /* XXX: For now, we do not support client
2027 * authentication using ECDH certificates.
2028 * To add such support, one needs to add
2029 * code that checks for appropriate
2030 * conditions and sets ecdh_clnt_cert to 1.
2031 * For example, the cert have an ECC
2032 * key on the same curve as the server's
2033 * and the key should be authorized for
2036 * One also needs to add code in ssl3_connect
2037 * to skip sending the certificate verify
2040 * if ((s->cert->key->privatekey != NULL) &&
2041 * (s->cert->key->privatekey->type ==
2042 * EVP_PKEY_EC) && ...)
2043 * ecdh_clnt_cert = 1;
2047 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2049 tkey = s->session->sess_cert->peer_ecdh_tmp;
2053 /* Get the Server Public Key from Cert */
2054 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2055 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2056 if ((srvr_pub_pkey == NULL) ||
2057 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2058 (srvr_pub_pkey->pkey.ec == NULL))
2060 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2061 ERR_R_INTERNAL_ERROR);
2065 tkey = srvr_pub_pkey->pkey.ec;
2068 srvr_group = EC_KEY_get0_group(tkey);
2069 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2071 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2073 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2074 ERR_R_INTERNAL_ERROR);
2078 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2080 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2084 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2086 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2091 /* Reuse key info from our certificate
2092 * We only need our private key to perform
2093 * the ECDH computation.
2095 const BIGNUM *priv_key;
2096 tkey = s->cert->key->privatekey->pkey.ec;
2097 priv_key = EC_KEY_get0_private_key(tkey);
2098 if (priv_key == NULL)
2100 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2103 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2105 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2111 /* Generate a new ECDH key pair */
2112 if (!(EC_KEY_generate_key(clnt_ecdh)))
2114 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2119 /* use the 'p' output buffer for the ECDH key, but
2120 * make sure to clear it out afterwards
2123 field_size = EC_GROUP_get_degree(srvr_group);
2124 if (field_size <= 0)
2126 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2130 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2133 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2138 /* generate master key from the result */
2139 s->session->master_key_length = s->method->ssl3_enc \
2140 -> generate_master_secret(s,
2141 s->session->master_key,
2144 memset(p, 0, n); /* clean up */
2148 /* Send empty client key exch message */
2153 /* First check the size of encoding and
2154 * allocate memory accordingly.
2157 EC_POINT_point2oct(srvr_group,
2158 EC_KEY_get0_public_key(clnt_ecdh),
2159 POINT_CONVERSION_UNCOMPRESSED,
2162 encodedPoint = (unsigned char *)
2163 OPENSSL_malloc(encoded_pt_len *
2164 sizeof(unsigned char));
2165 bn_ctx = BN_CTX_new();
2166 if ((encodedPoint == NULL) ||
2169 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2173 /* Encode the public key */
2174 n = EC_POINT_point2oct(srvr_group,
2175 EC_KEY_get0_public_key(clnt_ecdh),
2176 POINT_CONVERSION_UNCOMPRESSED,
2177 encodedPoint, encoded_pt_len, bn_ctx);
2179 *p = n; /* length of encoded point */
2180 /* Encoded point will be copied here */
2182 /* copy the point */
2183 memcpy((unsigned char *)p, encodedPoint, n);
2184 /* increment n to account for length field */
2188 /* Free allocated memory */
2189 BN_CTX_free(bn_ctx);
2190 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2191 if (clnt_ecdh != NULL)
2192 EC_KEY_free(clnt_ecdh);
2193 EVP_PKEY_free(srvr_pub_pkey);
2195 #endif /* !OPENSSL_NO_ECDH */
2196 #ifndef OPENSSL_NO_PSK
2197 else if (l & SSL_kPSK)
2199 char identity[PSK_MAX_IDENTITY_LEN];
2200 unsigned char *t = NULL;
2201 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2202 unsigned int pre_ms_len = 0, psk_len = 0;
2206 if (s->psk_client_callback == NULL)
2208 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2209 SSL_R_PSK_NO_CLIENT_CB);
2213 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2214 identity, PSK_MAX_IDENTITY_LEN,
2215 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2216 if (psk_len > PSK_MAX_PSK_LEN)
2218 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2219 ERR_R_INTERNAL_ERROR);
2222 else if (psk_len == 0)
2224 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2225 SSL_R_PSK_IDENTITY_NOT_FOUND);
2229 /* create PSK pre_master_secret */
2230 pre_ms_len = 2+psk_len+2+psk_len;
2232 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2234 memset(t, 0, psk_len);
2238 if (s->session->psk_identity_hint != NULL)
2239 OPENSSL_free(s->session->psk_identity_hint);
2240 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2241 if (s->ctx->psk_identity_hint != NULL &&
2242 s->session->psk_identity_hint == NULL)
2244 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2245 ERR_R_MALLOC_FAILURE);
2249 if (s->session->psk_identity != NULL)
2250 OPENSSL_free(s->session->psk_identity);
2251 s->session->psk_identity = BUF_strdup(identity);
2252 if (s->session->psk_identity == NULL)
2254 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2255 ERR_R_MALLOC_FAILURE);
2259 s->session->master_key_length =
2260 s->method->ssl3_enc->generate_master_secret(s,
2261 s->session->master_key,
2262 psk_or_pre_ms, pre_ms_len);
2263 n = strlen(identity);
2265 memcpy(p, identity, n);
2269 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2270 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2273 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2280 ssl3_send_alert(s, SSL3_AL_FATAL,
2281 SSL_AD_HANDSHAKE_FAILURE);
2282 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2283 ERR_R_INTERNAL_ERROR);
2287 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2290 s->state=SSL3_ST_CW_KEY_EXCH_B;
2291 /* number of bytes to write */
2296 /* SSL3_ST_CW_KEY_EXCH_B */
2297 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2299 #ifndef OPENSSL_NO_ECDH
2300 BN_CTX_free(bn_ctx);
2301 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2302 if (clnt_ecdh != NULL)
2303 EC_KEY_free(clnt_ecdh);
2304 EVP_PKEY_free(srvr_pub_pkey);
2309 int ssl3_send_client_verify(SSL *s)
2311 unsigned char *p,*d;
2312 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2314 #ifndef OPENSSL_NO_RSA
2318 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2322 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2324 d=(unsigned char *)s->init_buf->data;
2326 pkey=s->cert->key->privatekey;
2328 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2329 &(data[MD5_DIGEST_LENGTH]));
2331 #ifndef OPENSSL_NO_RSA
2332 if (pkey->type == EVP_PKEY_RSA)
2334 s->method->ssl3_enc->cert_verify_mac(s,
2335 &(s->s3->finish_dgst1),&(data[0]));
2336 if (RSA_sign(NID_md5_sha1, data,
2337 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2338 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2340 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2348 #ifndef OPENSSL_NO_DSA
2349 if (pkey->type == EVP_PKEY_DSA)
2351 if (!DSA_sign(pkey->save_type,
2352 &(data[MD5_DIGEST_LENGTH]),
2353 SHA_DIGEST_LENGTH,&(p[2]),
2354 (unsigned int *)&j,pkey->pkey.dsa))
2356 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2364 #ifndef OPENSSL_NO_ECDSA
2365 if (pkey->type == EVP_PKEY_EC)
2367 if (!ECDSA_sign(pkey->save_type,
2368 &(data[MD5_DIGEST_LENGTH]),
2369 SHA_DIGEST_LENGTH,&(p[2]),
2370 (unsigned int *)&j,pkey->pkey.ec))
2372 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2382 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2385 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2388 s->state=SSL3_ST_CW_CERT_VRFY_B;
2389 s->init_num=(int)n+4;
2392 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2397 int ssl3_send_client_certificate(SSL *s)
2400 EVP_PKEY *pkey=NULL;
2404 if (s->state == SSL3_ST_CW_CERT_A)
2406 if ((s->cert == NULL) ||
2407 (s->cert->key->x509 == NULL) ||
2408 (s->cert->key->privatekey == NULL))
2409 s->state=SSL3_ST_CW_CERT_B;
2411 s->state=SSL3_ST_CW_CERT_C;
2414 /* We need to get a client cert */
2415 if (s->state == SSL3_ST_CW_CERT_B)
2417 /* If we get an error, we need to
2418 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2419 * We then get retied later */
2421 if (s->ctx->client_cert_cb != NULL)
2422 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2425 s->rwstate=SSL_X509_LOOKUP;
2428 s->rwstate=SSL_NOTHING;
2429 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2431 s->state=SSL3_ST_CW_CERT_B;
2432 if ( !SSL_use_certificate(s,x509) ||
2433 !SSL_use_PrivateKey(s,pkey))
2439 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2442 if (x509 != NULL) X509_free(x509);
2443 if (pkey != NULL) EVP_PKEY_free(pkey);
2446 if (s->version == SSL3_VERSION)
2448 s->s3->tmp.cert_req=0;
2449 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2454 s->s3->tmp.cert_req=2;
2458 /* Ok, we have a cert */
2459 s->state=SSL3_ST_CW_CERT_C;
2462 if (s->state == SSL3_ST_CW_CERT_C)
2464 s->state=SSL3_ST_CW_CERT_D;
2465 l=ssl3_output_cert_chain(s,
2466 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2470 /* SSL3_ST_CW_CERT_D */
2471 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2474 #define has_bits(i,m) (((i)&(m)) == (m))
2476 int ssl3_check_cert_and_algorithm(SSL *s)
2480 EVP_PKEY *pkey=NULL;
2482 #ifndef OPENSSL_NO_RSA
2485 #ifndef OPENSSL_NO_DH
2489 sc=s->session->sess_cert;
2492 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2496 algs=s->s3->tmp.new_cipher->algorithms;
2498 /* we don't have a certificate */
2499 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5|SSL_kPSK))
2502 #ifndef OPENSSL_NO_RSA
2503 rsa=s->session->sess_cert->peer_rsa_tmp;
2505 #ifndef OPENSSL_NO_DH
2506 dh=s->session->sess_cert->peer_dh_tmp;
2509 /* This is the passed certificate */
2511 idx=sc->peer_cert_type;
2512 #ifndef OPENSSL_NO_ECDH
2513 if (idx == SSL_PKEY_ECC)
2515 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2516 s->s3->tmp.new_cipher) == 0)
2517 { /* check failed */
2518 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2527 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2528 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2529 EVP_PKEY_free(pkey);
2532 /* Check that we have a certificate if we require one */
2533 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2535 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2538 #ifndef OPENSSL_NO_DSA
2539 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2541 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2545 #ifndef OPENSSL_NO_RSA
2546 if ((algs & SSL_kRSA) &&
2547 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2549 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2553 #ifndef OPENSSL_NO_DH
2554 if ((algs & SSL_kEDH) &&
2555 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2557 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2560 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2562 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2565 #ifndef OPENSSL_NO_DSA
2566 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2568 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2574 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2576 #ifndef OPENSSL_NO_RSA
2577 if (algs & SSL_kRSA)
2580 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2582 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2588 #ifndef OPENSSL_NO_DH
2589 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2592 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2594 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2601 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2607 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);