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) 1998-2007 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 <openssl/crypto.h>
153 #include "ssl_locl.h"
154 #include "kssl_lcl.h"
155 #include <openssl/buffer.h>
156 #include <openssl/rand.h>
157 #include <openssl/objects.h>
158 #include <openssl/evp.h>
159 #include <openssl/md5.h>
160 #ifndef OPENSSL_NO_DH
161 #include <openssl/dh.h>
163 #include <openssl/bn.h>
164 #ifndef OPENSSL_NO_ENGINE
165 #include <openssl/engine.h>
168 static const SSL_METHOD *ssl3_get_client_method(int ver);
169 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
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);
188 void (*cb)(const SSL *ssl,int type,int val)=NULL;
190 int new_state,state,skip=0;
192 RAND_add(&Time,sizeof(Time),0);
196 if (s->info_callback != NULL)
198 else if (s->ctx->info_callback != NULL)
199 cb=s->ctx->info_callback;
202 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
210 case SSL_ST_RENEGOTIATE:
212 s->state=SSL_ST_CONNECT;
213 s->ctx->stats.sess_connect_renegotiate++;
217 case SSL_ST_BEFORE|SSL_ST_CONNECT:
218 case SSL_ST_OK|SSL_ST_CONNECT:
221 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
223 if ((s->version & 0xff00 ) != 0x0300)
225 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
230 /* s->version=SSL3_VERSION; */
231 s->type=SSL_ST_CONNECT;
233 if (s->init_buf == NULL)
235 if ((buf=BUF_MEM_new()) == NULL)
240 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
249 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
251 /* setup buffing BIO */
252 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
254 /* don't push the buffering BIO quite yet */
256 ssl3_init_finished_mac(s);
258 s->state=SSL3_ST_CW_CLNT_HELLO_A;
259 s->ctx->stats.sess_connect++;
263 case SSL3_ST_CW_CLNT_HELLO_A:
264 case SSL3_ST_CW_CLNT_HELLO_B:
267 ret=ssl3_client_hello(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CR_SRVR_HELLO_A;
272 /* turn on buffering for the next lot of output */
273 if (s->bbio != s->wbio)
274 s->wbio=BIO_push(s->bbio,s->wbio);
278 case SSL3_ST_CR_SRVR_HELLO_A:
279 case SSL3_ST_CR_SRVR_HELLO_B:
280 ret=ssl3_get_server_hello(s);
281 #ifndef OPENSSL_NO_SRP
282 if ((ret == 0) && (s->s3->warn_alert == SSL_AD_MISSING_SRP_USERNAME))
284 if (!SRP_have_to_put_srp_username(s))
286 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_MISSING_SRP_USERNAME);
287 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_USER_CANCELLED);
290 s->state=SSL3_ST_CW_CLNT_HELLO_A;
291 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
295 if (ret <= 0) goto end;
298 s->state=SSL3_ST_CR_FINISHED_A;
300 s->state=SSL3_ST_CR_CERT_A;
304 case SSL3_ST_CR_CERT_A:
305 case SSL3_ST_CR_CERT_B:
306 #ifndef OPENSSL_NO_TLSEXT
307 ret=ssl3_check_finished(s);
308 if (ret <= 0) goto end;
312 if (s->tlsext_ticket_expected)
313 s->state=SSL3_ST_CR_SESSION_TICKET_A;
315 s->state=SSL3_ST_CR_FINISHED_A;
320 /* Check if it is anon DH/ECDH */
322 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
323 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
325 ret=ssl3_get_server_certificate(s);
326 if (ret <= 0) goto end;
327 #ifndef OPENSSL_NO_TLSEXT
328 if (s->tlsext_status_expected)
329 s->state=SSL3_ST_CR_CERT_STATUS_A;
331 s->state=SSL3_ST_CR_KEY_EXCH_A;
336 s->state=SSL3_ST_CR_KEY_EXCH_A;
343 s->state=SSL3_ST_CR_KEY_EXCH_A;
348 case SSL3_ST_CR_KEY_EXCH_A:
349 case SSL3_ST_CR_KEY_EXCH_B:
350 ret=ssl3_get_key_exchange(s);
351 if (ret <= 0) goto end;
352 s->state=SSL3_ST_CR_CERT_REQ_A;
355 /* at this point we check that we have the
356 * required stuff from the server */
357 if (!ssl3_check_cert_and_algorithm(s))
364 case SSL3_ST_CR_CERT_REQ_A:
365 case SSL3_ST_CR_CERT_REQ_B:
366 ret=ssl3_get_certificate_request(s);
367 if (ret <= 0) goto end;
368 s->state=SSL3_ST_CR_SRVR_DONE_A;
372 case SSL3_ST_CR_SRVR_DONE_A:
373 case SSL3_ST_CR_SRVR_DONE_B:
374 ret=ssl3_get_server_done(s);
375 if (ret <= 0) goto end;
376 #ifndef OPENSSL_NO_SRP
377 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
379 if ((ret = SRP_Calc_A_param(s))<=0)
381 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
382 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
387 if (s->s3->tmp.cert_req)
388 s->state=SSL3_ST_CW_CERT_A;
390 s->state=SSL3_ST_CW_KEY_EXCH_A;
395 case SSL3_ST_CW_CERT_A:
396 case SSL3_ST_CW_CERT_B:
397 case SSL3_ST_CW_CERT_C:
398 case SSL3_ST_CW_CERT_D:
399 ret=ssl3_send_client_certificate(s);
400 if (ret <= 0) goto end;
401 s->state=SSL3_ST_CW_KEY_EXCH_A;
405 case SSL3_ST_CW_KEY_EXCH_A:
406 case SSL3_ST_CW_KEY_EXCH_B:
407 ret=ssl3_send_client_key_exchange(s);
408 if (ret <= 0) goto end;
409 /* EAY EAY EAY need to check for DH fix cert
411 /* For TLS, cert_req is set to 2, so a cert chain
412 * of nothing is sent, but no verify packet is sent */
413 /* XXX: For now, we do not support client
414 * authentication in ECDH cipher suites with
415 * ECDH (rather than ECDSA) certificates.
416 * We need to skip the certificate verify
417 * message when client's ECDH public key is sent
418 * inside the client certificate.
420 if (s->s3->tmp.cert_req == 1)
422 s->state=SSL3_ST_CW_CERT_VRFY_A;
426 s->state=SSL3_ST_CW_CHANGE_A;
427 s->s3->change_cipher_spec=0;
429 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
431 s->state=SSL3_ST_CW_CHANGE_A;
432 s->s3->change_cipher_spec=0;
438 case SSL3_ST_CW_CERT_VRFY_A:
439 case SSL3_ST_CW_CERT_VRFY_B:
440 ret=ssl3_send_client_verify(s);
441 if (ret <= 0) goto end;
442 s->state=SSL3_ST_CW_CHANGE_A;
444 s->s3->change_cipher_spec=0;
447 case SSL3_ST_CW_CHANGE_A:
448 case SSL3_ST_CW_CHANGE_B:
449 ret=ssl3_send_change_cipher_spec(s,
450 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
451 if (ret <= 0) goto end;
453 #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG)
454 s->state=SSL3_ST_CW_FINISHED_A;
456 if (s->next_proto_negotiated)
457 s->state=SSL3_ST_CW_NEXT_PROTO_A;
459 s->state=SSL3_ST_CW_FINISHED_A;
463 s->session->cipher=s->s3->tmp.new_cipher;
464 #ifdef OPENSSL_NO_COMP
465 s->session->compress_meth=0;
467 if (s->s3->tmp.new_compression == NULL)
468 s->session->compress_meth=0;
470 s->session->compress_meth=
471 s->s3->tmp.new_compression->id;
473 if (!s->method->ssl3_enc->setup_key_block(s))
479 if (!s->method->ssl3_enc->change_cipher_state(s,
480 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
488 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
489 case SSL3_ST_CW_NEXT_PROTO_A:
490 case SSL3_ST_CW_NEXT_PROTO_B:
491 ret=ssl3_send_next_proto(s);
492 if (ret <= 0) goto end;
493 s->state=SSL3_ST_CW_FINISHED_A;
497 case SSL3_ST_CW_FINISHED_A:
498 case SSL3_ST_CW_FINISHED_B:
499 ret=ssl3_send_finished(s,
500 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
501 s->method->ssl3_enc->client_finished_label,
502 s->method->ssl3_enc->client_finished_label_len);
503 if (ret <= 0) goto end;
504 s->state=SSL3_ST_CW_FLUSH;
507 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
510 s->s3->tmp.next_state=SSL_ST_OK;
511 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
514 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
515 s->s3->delay_buf_pop_ret=0;
520 #ifndef OPENSSL_NO_TLSEXT
521 /* Allow NewSessionTicket if ticket expected */
522 if (s->tlsext_ticket_expected)
523 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
527 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
532 #ifndef OPENSSL_NO_TLSEXT
533 case SSL3_ST_CR_SESSION_TICKET_A:
534 case SSL3_ST_CR_SESSION_TICKET_B:
535 ret=ssl3_get_new_session_ticket(s);
536 if (ret <= 0) goto end;
537 s->state=SSL3_ST_CR_FINISHED_A;
541 case SSL3_ST_CR_CERT_STATUS_A:
542 case SSL3_ST_CR_CERT_STATUS_B:
543 ret=ssl3_get_cert_status(s);
544 if (ret <= 0) goto end;
545 s->state=SSL3_ST_CR_KEY_EXCH_A;
550 case SSL3_ST_CR_FINISHED_A:
551 case SSL3_ST_CR_FINISHED_B:
553 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
554 SSL3_ST_CR_FINISHED_B);
555 if (ret <= 0) goto end;
558 s->state=SSL3_ST_CW_CHANGE_A;
564 case SSL3_ST_CW_FLUSH:
565 s->rwstate=SSL_WRITING;
566 if (BIO_flush(s->wbio) <= 0)
571 s->rwstate=SSL_NOTHING;
572 s->state=s->s3->tmp.next_state;
576 /* clean a few things up */
577 ssl3_cleanup_key_block(s);
579 if (s->init_buf != NULL)
581 BUF_MEM_free(s->init_buf);
585 /* If we are not 'joining' the last two packets,
586 * remove the buffering now */
587 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
588 ssl_free_wbio_buffer(s);
589 /* else do it later in ssl3_write */
595 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
596 if (s->hit) s->ctx->stats.sess_hit++;
600 s->handshake_func=ssl3_connect;
601 s->ctx->stats.sess_connect_good++;
603 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
609 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
615 /* did we do anything */
616 if (!s->s3->tmp.reuse_message && !skip)
620 if ((ret=BIO_flush(s->wbio)) <= 0)
624 if ((cb != NULL) && (s->state != state))
628 cb(s,SSL_CB_CONNECT_LOOP,1);
639 cb(s,SSL_CB_CONNECT_EXIT,ret);
644 int ssl3_client_hello(SSL *s)
649 unsigned long Time,l;
650 #ifndef OPENSSL_NO_COMP
655 buf=(unsigned char *)s->init_buf->data;
656 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
658 SSL_SESSION *sess = s->session;
659 if ((sess == NULL) ||
660 (sess->ssl_version != s->version) ||
661 #ifdef OPENSSL_NO_TLSEXT
662 !sess->session_id_length ||
664 (!sess->session_id_length && !sess->tlsext_tick) ||
666 (sess->not_resumable))
668 if (!ssl_get_new_session(s,0))
671 /* else use the pre-loaded session */
673 p=s->s3->client_random;
674 Time=(unsigned long)time(NULL); /* Time */
676 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
679 /* Do the message type and length last */
682 *(p++)=s->version>>8;
683 *(p++)=s->version&0xff;
684 s->client_version=s->version;
687 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
694 i=s->session->session_id_length;
698 if (i > (int)sizeof(s->session->session_id))
700 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
703 memcpy(p,s->session->session_id,i);
707 /* Ciphers supported */
708 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
711 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
718 #ifdef OPENSSL_NO_COMP
722 if ((s->options & SSL_OP_NO_COMPRESSION)
723 || !s->ctx->comp_methods)
726 j=sk_SSL_COMP_num(s->ctx->comp_methods);
730 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
734 *(p++)=0; /* Add the NULL method */
736 #ifndef OPENSSL_NO_TLSEXT
738 if (ssl_prepare_clienthello_tlsext(s) <= 0)
740 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
743 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
745 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
752 *(d++)=SSL3_MT_CLIENT_HELLO;
755 s->state=SSL3_ST_CW_CLNT_HELLO_B;
756 /* number of bytes to write */
761 /* SSL3_ST_CW_CLNT_HELLO_B */
762 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
767 int ssl3_get_server_hello(SSL *s)
769 STACK_OF(SSL_CIPHER) *sk;
775 #ifndef OPENSSL_NO_COMP
779 n=s->method->ssl_get_message(s,
780 SSL3_ST_CR_SRVR_HELLO_A,
781 SSL3_ST_CR_SRVR_HELLO_B,
786 if (!ok) return((int)n);
788 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
790 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
792 if ( s->d1->send_cookie == 0)
794 s->s3->tmp.reuse_message = 1;
797 else /* already sent a cookie */
799 al=SSL_AD_UNEXPECTED_MESSAGE;
800 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
806 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
808 al=SSL_AD_UNEXPECTED_MESSAGE;
809 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
813 d=p=(unsigned char *)s->init_msg;
815 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
817 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
818 s->version=(s->version&0xff00)|p[1];
819 al=SSL_AD_PROTOCOL_VERSION;
824 /* load the server hello data */
825 /* load the server random */
826 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
829 /* get the session-id */
832 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
834 al=SSL_AD_ILLEGAL_PARAMETER;
835 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
839 #ifndef OPENSSL_NO_TLSEXT
840 /* check if we want to resume the session based on external pre-shared secret */
841 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
843 SSL_CIPHER *pref_cipher=NULL;
844 s->session->master_key_length=sizeof(s->session->master_key);
845 if (s->tls_session_secret_cb(s, s->session->master_key,
846 &s->session->master_key_length,
848 s->tls_session_secret_cb_arg))
850 s->session->cipher = pref_cipher ?
851 pref_cipher : ssl_get_cipher_by_char(s, p+j);
854 #endif /* OPENSSL_NO_TLSEXT */
856 if (j != 0 && j == s->session->session_id_length
857 && memcmp(p,s->session->session_id,j) == 0)
859 if(s->sid_ctx_length != s->session->sid_ctx_length
860 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
862 /* actually a client application bug */
863 al=SSL_AD_ILLEGAL_PARAMETER;
864 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
869 else /* a miss or crap from the other end */
871 /* If we were trying for session-id reuse, make a new
872 * SSL_SESSION so we don't stuff up other people */
874 if (s->session->session_id_length > 0)
876 if (!ssl_get_new_session(s,0))
878 al=SSL_AD_INTERNAL_ERROR;
882 s->session->session_id_length=j;
883 memcpy(s->session->session_id,p,j); /* j could be 0 */
886 c=ssl_get_cipher_by_char(s,p);
890 al=SSL_AD_ILLEGAL_PARAMETER;
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
894 p+=ssl_put_cipher_by_char(s,NULL,NULL);
896 sk=ssl_get_ciphers_by_id(s);
897 i=sk_SSL_CIPHER_find(sk,c);
900 /* we did not say we would use this cipher */
901 al=SSL_AD_ILLEGAL_PARAMETER;
902 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
906 /* Depending on the session caching (internal/external), the cipher
907 and/or cipher_id values may not be set. Make sure that
908 cipher_id is set and use it for comparison. */
909 if (s->session->cipher)
910 s->session->cipher_id = s->session->cipher->id;
911 if (s->hit && (s->session->cipher_id != c->id))
913 /* Workaround is now obsolete */
916 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
919 al=SSL_AD_ILLEGAL_PARAMETER;
920 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
924 s->s3->tmp.new_cipher=c;
925 if (!ssl3_digest_cached_records(s))
928 /* lets get the compression algorithm */
930 #ifdef OPENSSL_NO_COMP
933 al=SSL_AD_ILLEGAL_PARAMETER;
934 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
937 /* If compression is disabled we'd better not try to resume a session
940 if (s->session->compress_meth != 0)
942 al=SSL_AD_INTERNAL_ERROR;
943 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
948 if (s->hit && j != s->session->compress_meth)
950 al=SSL_AD_ILLEGAL_PARAMETER;
951 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
956 else if (s->options & SSL_OP_NO_COMPRESSION)
958 al=SSL_AD_ILLEGAL_PARAMETER;
959 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
963 comp=ssl3_comp_find(s->ctx->comp_methods,j);
965 if ((j != 0) && (comp == NULL))
967 al=SSL_AD_ILLEGAL_PARAMETER;
968 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
973 s->s3->tmp.new_compression=comp;
977 #ifndef OPENSSL_NO_TLSEXT
979 if (s->version >= SSL3_VERSION)
981 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
983 /* 'al' set by ssl_parse_serverhello_tlsext */
984 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
987 if (ssl_check_serverhello_tlsext(s) <= 0)
989 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
997 /* wrong packet length */
998 al=SSL_AD_DECODE_ERROR;
999 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1005 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1010 int ssl3_get_server_certificate(SSL *s)
1012 int al,i,ok,ret= -1;
1013 unsigned long n,nc,llen,l;
1015 const unsigned char *q,*p;
1017 STACK_OF(X509) *sk=NULL;
1019 EVP_PKEY *pkey=NULL;
1020 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1022 n=s->method->ssl_get_message(s,
1029 if (!ok) return((int)n);
1031 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1032 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1033 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1035 s->s3->tmp.reuse_message=1;
1039 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1041 al=SSL_AD_UNEXPECTED_MESSAGE;
1042 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1045 p=d=(unsigned char *)s->init_msg;
1047 if ((sk=sk_X509_new_null()) == NULL)
1049 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1056 al=SSL_AD_DECODE_ERROR;
1057 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1060 for (nc=0; nc<llen; )
1063 if ((l+nc+3) > llen)
1065 al=SSL_AD_DECODE_ERROR;
1066 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1071 x=d2i_X509(NULL,&q,l);
1074 al=SSL_AD_BAD_CERTIFICATE;
1075 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1080 al=SSL_AD_DECODE_ERROR;
1081 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1084 if (!sk_X509_push(sk,x))
1086 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1094 i=ssl_verify_cert_chain(s,sk);
1095 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1096 #ifndef OPENSSL_NO_KRB5
1097 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1098 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1099 #endif /* OPENSSL_NO_KRB5 */
1102 al=ssl_verify_alarm_type(s->verify_result);
1103 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1106 ERR_clear_error(); /* but we keep s->verify_result */
1108 sc=ssl_sess_cert_new();
1109 if (sc == NULL) goto err;
1111 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1112 s->session->sess_cert=sc;
1115 /* Inconsistency alert: cert_chain does include the peer's
1116 * certificate, which we don't include in s3_srvr.c */
1117 x=sk_X509_value(sk,0);
1119 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1121 pkey=X509_get_pubkey(x);
1123 /* VRS: allow null cert if auth == KRB5 */
1124 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1125 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1129 printf("pkey,x = %p, %p\n", pkey,x);
1130 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1131 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1132 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1133 #endif /* KSSL_DEBUG */
1135 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1139 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1140 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1144 i=ssl_cert_type(x,pkey);
1145 if (need_cert && i < 0)
1149 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1150 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1156 sc->peer_cert_type=i;
1157 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1158 /* Why would the following ever happen?
1159 * We just created sc a couple of lines ago. */
1160 if (sc->peer_pkeys[i].x509 != NULL)
1161 X509_free(sc->peer_pkeys[i].x509);
1162 sc->peer_pkeys[i].x509=x;
1163 sc->peer_key= &(sc->peer_pkeys[i]);
1165 if (s->session->peer != NULL)
1166 X509_free(s->session->peer);
1167 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1172 sc->peer_cert_type=i;
1175 if (s->session->peer != NULL)
1176 X509_free(s->session->peer);
1177 s->session->peer=NULL;
1179 s->session->verify_result = s->verify_result;
1187 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1190 EVP_PKEY_free(pkey);
1192 sk_X509_pop_free(sk,X509_free);
1196 int ssl3_get_key_exchange(SSL *s)
1198 #ifndef OPENSSL_NO_RSA
1199 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1202 unsigned char *param,*p;
1203 int al,i,j,param_len,ok;
1205 EVP_PKEY *pkey=NULL;
1206 const EVP_MD *md = NULL;
1207 #ifndef OPENSSL_NO_RSA
1210 #ifndef OPENSSL_NO_DH
1213 #ifndef OPENSSL_NO_ECDH
1214 EC_KEY *ecdh = NULL;
1215 BN_CTX *bn_ctx = NULL;
1216 EC_POINT *srvr_ecpoint = NULL;
1218 int encoded_pt_len = 0;
1221 /* use same message size as in ssl3_get_certificate_request()
1222 * as ServerKeyExchange message may be skipped */
1223 n=s->method->ssl_get_message(s,
1224 SSL3_ST_CR_KEY_EXCH_A,
1225 SSL3_ST_CR_KEY_EXCH_B,
1229 if (!ok) return((int)n);
1231 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1233 #ifndef OPENSSL_NO_PSK
1234 /* In plain PSK ciphersuite, ServerKeyExchange can be
1235 omitted if no identity hint is sent. Set
1236 session->sess_cert anyway to avoid problems
1238 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1240 s->session->sess_cert=ssl_sess_cert_new();
1241 if (s->ctx->psk_identity_hint)
1242 OPENSSL_free(s->ctx->psk_identity_hint);
1243 s->ctx->psk_identity_hint = NULL;
1246 s->s3->tmp.reuse_message=1;
1250 param=p=(unsigned char *)s->init_msg;
1251 if (s->session->sess_cert != NULL)
1253 #ifndef OPENSSL_NO_RSA
1254 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1256 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1257 s->session->sess_cert->peer_rsa_tmp=NULL;
1260 #ifndef OPENSSL_NO_DH
1261 if (s->session->sess_cert->peer_dh_tmp)
1263 DH_free(s->session->sess_cert->peer_dh_tmp);
1264 s->session->sess_cert->peer_dh_tmp=NULL;
1267 #ifndef OPENSSL_NO_ECDH
1268 if (s->session->sess_cert->peer_ecdh_tmp)
1270 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1271 s->session->sess_cert->peer_ecdh_tmp=NULL;
1277 s->session->sess_cert=ssl_sess_cert_new();
1281 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1282 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1283 EVP_MD_CTX_init(&md_ctx);
1285 #ifndef OPENSSL_NO_PSK
1286 if (alg_k & SSL_kPSK)
1288 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1290 al=SSL_AD_HANDSHAKE_FAILURE;
1293 /* Store PSK identity hint for later use, hint is used
1294 * in ssl3_send_client_key_exchange. Assume that the
1295 * maximum length of a PSK identity hint can be as
1296 * long as the maximum length of a PSK identity. */
1297 if (i > PSK_MAX_IDENTITY_LEN)
1299 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1300 SSL_R_DATA_LENGTH_TOO_LONG);
1305 al=SSL_AD_DECODE_ERROR;
1306 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1307 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1310 /* If received PSK identity hint contains NULL
1311 * characters, the hint is truncated from the first
1312 * NULL. p may not be ending with NULL, so create a
1313 * NULL-terminated string. */
1314 memcpy(tmp_id_hint, p, i);
1315 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1316 if (s->ctx->psk_identity_hint != NULL)
1317 OPENSSL_free(s->ctx->psk_identity_hint);
1318 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1319 if (s->ctx->psk_identity_hint == NULL)
1321 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1329 #endif /* !OPENSSL_NO_PSK */
1330 #ifndef OPENSSL_NO_SRP
1331 if (alg_k & SSL_kSRP)
1337 al=SSL_AD_DECODE_ERROR;
1338 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1341 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1343 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1352 al=SSL_AD_DECODE_ERROR;
1353 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1356 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1358 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1363 i = (unsigned int)(p[0]);
1368 al=SSL_AD_DECODE_ERROR;
1369 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1372 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1374 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1383 al=SSL_AD_DECODE_ERROR;
1384 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1387 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1389 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1395 /* We must check if there is a certificate */
1396 #ifndef OPENSSL_NO_RSA
1397 if (alg_a & SSL_aRSA)
1398 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1403 #ifndef OPENSSL_NO_DSA
1404 else if (alg_a & SSL_aDSS)
1405 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1409 #endif /* !OPENSSL_NO_SRP */
1410 #ifndef OPENSSL_NO_RSA
1411 if (alg_k & SSL_kRSA)
1413 if ((rsa=RSA_new()) == NULL)
1415 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1422 al=SSL_AD_DECODE_ERROR;
1423 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1426 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1437 al=SSL_AD_DECODE_ERROR;
1438 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1441 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1449 /* this should be because we are using an export cipher */
1450 if (alg_a & SSL_aRSA)
1451 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1454 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1457 s->session->sess_cert->peer_rsa_tmp=rsa;
1460 #else /* OPENSSL_NO_RSA */
1464 #ifndef OPENSSL_NO_DH
1465 else if (alg_k & SSL_kEDH)
1467 if ((dh=DH_new()) == NULL)
1469 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1476 al=SSL_AD_DECODE_ERROR;
1477 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1480 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1491 al=SSL_AD_DECODE_ERROR;
1492 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1495 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1506 al=SSL_AD_DECODE_ERROR;
1507 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1510 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1512 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1518 #ifndef OPENSSL_NO_RSA
1519 if (alg_a & SSL_aRSA)
1520 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1525 #ifndef OPENSSL_NO_DSA
1526 else if (alg_a & SSL_aDSS)
1527 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1529 /* else anonymous DH, so no certificate or pkey. */
1531 s->session->sess_cert->peer_dh_tmp=dh;
1534 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1536 al=SSL_AD_ILLEGAL_PARAMETER;
1537 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1540 #endif /* !OPENSSL_NO_DH */
1542 #ifndef OPENSSL_NO_ECDH
1543 else if (alg_k & SSL_kEECDH)
1546 const EC_GROUP *group;
1548 if ((ecdh=EC_KEY_new()) == NULL)
1550 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1554 /* Extract elliptic curve parameters and the
1555 * server's ephemeral ECDH public key.
1556 * Keep accumulating lengths of various components in
1557 * param_len and make sure it never exceeds n.
1560 /* XXX: For now we only support named (not generic) curves
1561 * and the ECParameters in this case is just three bytes.
1564 if ((param_len > n) ||
1565 (*p != NAMED_CURVE_TYPE) ||
1566 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1568 al=SSL_AD_INTERNAL_ERROR;
1569 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1573 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1576 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1579 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1581 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1584 EC_GROUP_free(ngroup);
1586 group = EC_KEY_get0_group(ecdh);
1588 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1589 (EC_GROUP_get_degree(group) > 163))
1591 al=SSL_AD_EXPORT_RESTRICTION;
1592 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1598 /* Next, get the encoded ECPoint */
1599 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1600 ((bn_ctx = BN_CTX_new()) == NULL))
1602 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1606 encoded_pt_len = *p; /* length of encoded point */
1608 param_len += (1 + encoded_pt_len);
1609 if ((param_len > n) ||
1610 (EC_POINT_oct2point(group, srvr_ecpoint,
1611 p, encoded_pt_len, bn_ctx) == 0))
1613 al=SSL_AD_DECODE_ERROR;
1614 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1621 /* The ECC/TLS specification does not mention
1622 * the use of DSA to sign ECParameters in the server
1623 * key exchange message. We do support RSA and ECDSA.
1626 #ifndef OPENSSL_NO_RSA
1627 else if (alg_a & SSL_aRSA)
1628 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1630 #ifndef OPENSSL_NO_ECDSA
1631 else if (alg_a & SSL_aECDSA)
1632 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1634 /* else anonymous ECDH, so no certificate or pkey. */
1635 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1636 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1638 BN_CTX_free(bn_ctx);
1640 EC_POINT_free(srvr_ecpoint);
1641 srvr_ecpoint = NULL;
1645 al=SSL_AD_UNEXPECTED_MESSAGE;
1646 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1649 #endif /* !OPENSSL_NO_ECDH */
1652 /* p points to the next byte, there are 'n' bytes left */
1654 /* if it was signed, check the signature */
1657 if (s->version >= TLS1_2_VERSION)
1659 int sigalg = tls12_get_sigid(pkey);
1660 /* Should never happen */
1663 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1666 /* Check key type is consistent with signature */
1667 if (sigalg != (int)p[1])
1669 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1670 al=SSL_AD_DECODE_ERROR;
1673 md = tls12_get_hash(p[0]);
1676 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1677 al=SSL_AD_DECODE_ERROR;
1681 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1691 j=EVP_PKEY_size(pkey);
1693 if ((i != n) || (n > j) || (n <= 0))
1695 /* wrong packet length */
1696 al=SSL_AD_DECODE_ERROR;
1697 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1701 #ifndef OPENSSL_NO_RSA
1702 if (pkey->type == EVP_PKEY_RSA && s->version < TLS1_2_VERSION)
1708 for (num=2; num > 0; num--)
1710 EVP_DigestInit_ex(&md_ctx,(num == 2)
1711 ?s->ctx->md5:s->ctx->sha1, NULL);
1712 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1713 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1714 EVP_DigestUpdate(&md_ctx,param,param_len);
1715 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1719 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1723 al=SSL_AD_DECRYPT_ERROR;
1724 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1730 al=SSL_AD_DECRYPT_ERROR;
1731 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1738 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1739 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1740 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1741 EVP_VerifyUpdate(&md_ctx,param,param_len);
1742 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1745 al=SSL_AD_DECRYPT_ERROR;
1746 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1753 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1754 /* aNULL or kPSK do not need public keys */
1756 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1759 /* still data left over */
1762 al=SSL_AD_DECODE_ERROR;
1763 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1767 EVP_PKEY_free(pkey);
1768 EVP_MD_CTX_cleanup(&md_ctx);
1771 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1773 EVP_PKEY_free(pkey);
1774 #ifndef OPENSSL_NO_RSA
1778 #ifndef OPENSSL_NO_DH
1782 #ifndef OPENSSL_NO_ECDH
1783 BN_CTX_free(bn_ctx);
1784 EC_POINT_free(srvr_ecpoint);
1788 EVP_MD_CTX_cleanup(&md_ctx);
1792 int ssl3_get_certificate_request(SSL *s)
1795 unsigned long n,nc,l;
1796 unsigned int llen, ctype_num,i;
1798 const unsigned char *p,*q;
1800 STACK_OF(X509_NAME) *ca_sk=NULL;
1802 n=s->method->ssl_get_message(s,
1803 SSL3_ST_CR_CERT_REQ_A,
1804 SSL3_ST_CR_CERT_REQ_B,
1809 if (!ok) return((int)n);
1811 s->s3->tmp.cert_req=0;
1813 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1815 s->s3->tmp.reuse_message=1;
1819 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1821 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1822 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1826 /* TLS does not like anon-DH with client cert */
1827 if (s->version > SSL3_VERSION)
1829 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1831 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1832 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1837 p=d=(unsigned char *)s->init_msg;
1839 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1841 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1845 /* get the certificate types */
1847 if (ctype_num > SSL3_CT_NUMBER)
1848 ctype_num=SSL3_CT_NUMBER;
1849 for (i=0; i<ctype_num; i++)
1850 s->s3->tmp.ctype[i]= p[i];
1852 /* HACK! For now just skip over signatature algorithms */
1853 if (s->version >= TLS1_2_VERSION)
1856 /* Check we have enough room for signature algorithms and
1857 * following length value.
1859 if ((unsigned long)(p - d + llen + 2) > n)
1861 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1862 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1865 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1867 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1868 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1874 /* get the CA RDNs */
1879 out=fopen("/tmp/vsign.der","w");
1880 fwrite(p,1,llen,out);
1885 if ((unsigned long)(p - d + llen) != n)
1887 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1888 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1892 for (nc=0; nc<llen; )
1895 if ((l+nc+2) > llen)
1897 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1898 goto cont; /* netscape bugs */
1899 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1900 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1906 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1908 /* If netscape tolerance is on, ignore errors */
1909 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1913 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1914 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1921 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1922 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1925 if (!sk_X509_NAME_push(ca_sk,xn))
1927 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1941 /* we should setup a certificate to return.... */
1942 s->s3->tmp.cert_req=1;
1943 s->s3->tmp.ctype_num=ctype_num;
1944 if (s->s3->tmp.ca_names != NULL)
1945 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1946 s->s3->tmp.ca_names=ca_sk;
1951 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1955 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1957 return(X509_NAME_cmp(*a,*b));
1959 #ifndef OPENSSL_NO_TLSEXT
1960 int ssl3_get_new_session_ticket(SSL *s)
1962 int ok,al,ret=0, ticklen;
1964 const unsigned char *p;
1967 n=s->method->ssl_get_message(s,
1968 SSL3_ST_CR_SESSION_TICKET_A,
1969 SSL3_ST_CR_SESSION_TICKET_B,
1977 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1979 s->s3->tmp.reuse_message=1;
1982 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1984 al=SSL_AD_UNEXPECTED_MESSAGE;
1985 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1990 /* need at least ticket_lifetime_hint + ticket length */
1991 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1992 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1996 p=d=(unsigned char *)s->init_msg;
1997 n2l(p, s->session->tlsext_tick_lifetime_hint);
1999 /* ticket_lifetime_hint + ticket_length + ticket */
2000 if (ticklen + 6 != n)
2002 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2003 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2006 if (s->session->tlsext_tick)
2008 OPENSSL_free(s->session->tlsext_tick);
2009 s->session->tlsext_ticklen = 0;
2011 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2012 if (!s->session->tlsext_tick)
2014 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2017 memcpy(s->session->tlsext_tick, p, ticklen);
2018 s->session->tlsext_ticklen = ticklen;
2019 /* There are two ways to detect a resumed ticket sesion.
2020 * One is to set an appropriate session ID and then the server
2021 * must return a match in ServerHello. This allows the normal
2022 * client session ID matching to work and we know much
2023 * earlier that the ticket has been accepted.
2025 * The other way is to set zero length session ID when the
2026 * ticket is presented and rely on the handshake to determine
2027 * session resumption.
2029 * We choose the former approach because this fits in with
2030 * assumptions elsewhere in OpenSSL. The session ID is set
2031 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2034 EVP_Digest(p, ticklen,
2035 s->session->session_id, &s->session->session_id_length,
2036 #ifndef OPENSSL_NO_SHA256
2037 EVP_sha256(), NULL);
2044 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2049 int ssl3_get_cert_status(SSL *s)
2052 unsigned long resplen,n;
2053 const unsigned char *p;
2055 n=s->method->ssl_get_message(s,
2056 SSL3_ST_CR_CERT_STATUS_A,
2057 SSL3_ST_CR_CERT_STATUS_B,
2058 SSL3_MT_CERTIFICATE_STATUS,
2062 if (!ok) return((int)n);
2065 /* need at least status type + length */
2066 al = SSL_AD_DECODE_ERROR;
2067 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2070 p = (unsigned char *)s->init_msg;
2071 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2073 al = SSL_AD_DECODE_ERROR;
2074 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2078 if (resplen + 4 != n)
2080 al = SSL_AD_DECODE_ERROR;
2081 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2084 if (s->tlsext_ocsp_resp)
2085 OPENSSL_free(s->tlsext_ocsp_resp);
2086 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2087 if (!s->tlsext_ocsp_resp)
2089 al = SSL_AD_INTERNAL_ERROR;
2090 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2093 s->tlsext_ocsp_resplen = resplen;
2094 if (s->ctx->tlsext_status_cb)
2097 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2100 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2101 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2106 al = SSL_AD_INTERNAL_ERROR;
2107 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2113 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2118 int ssl3_get_server_done(SSL *s)
2123 n=s->method->ssl_get_message(s,
2124 SSL3_ST_CR_SRVR_DONE_A,
2125 SSL3_ST_CR_SRVR_DONE_B,
2126 SSL3_MT_SERVER_DONE,
2127 30, /* should be very small, like 0 :-) */
2130 if (!ok) return((int)n);
2133 /* should contain no data */
2134 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2135 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2143 int ssl3_send_client_key_exchange(SSL *s)
2145 unsigned char *p,*d;
2147 unsigned long alg_k;
2148 #ifndef OPENSSL_NO_RSA
2150 EVP_PKEY *pkey=NULL;
2152 #ifndef OPENSSL_NO_KRB5
2154 #endif /* OPENSSL_NO_KRB5 */
2155 #ifndef OPENSSL_NO_ECDH
2156 EC_KEY *clnt_ecdh = NULL;
2157 const EC_POINT *srvr_ecpoint = NULL;
2158 EVP_PKEY *srvr_pub_pkey = NULL;
2159 unsigned char *encodedPoint = NULL;
2160 int encoded_pt_len = 0;
2161 BN_CTX * bn_ctx = NULL;
2164 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2166 d=(unsigned char *)s->init_buf->data;
2169 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2171 /* Fool emacs indentation */
2173 #ifndef OPENSSL_NO_RSA
2174 else if (alg_k & SSL_kRSA)
2177 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2179 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2180 rsa=s->session->sess_cert->peer_rsa_tmp;
2183 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2184 if ((pkey == NULL) ||
2185 (pkey->type != EVP_PKEY_RSA) ||
2186 (pkey->pkey.rsa == NULL))
2188 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2192 EVP_PKEY_free(pkey);
2195 tmp_buf[0]=s->client_version>>8;
2196 tmp_buf[1]=s->client_version&0xff;
2197 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2200 s->session->master_key_length=sizeof tmp_buf;
2203 /* Fix buf for TLS and beyond */
2204 if (s->version > SSL3_VERSION)
2206 n=RSA_public_encrypt(sizeof tmp_buf,
2207 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2209 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2210 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2214 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2218 /* Fix buf for TLS and beyond */
2219 if (s->version > SSL3_VERSION)
2225 s->session->master_key_length=
2226 s->method->ssl3_enc->generate_master_secret(s,
2227 s->session->master_key,
2228 tmp_buf,sizeof tmp_buf);
2229 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2232 #ifndef OPENSSL_NO_KRB5
2233 else if (alg_k & SSL_kKRB5)
2235 krb5_error_code krb5rc;
2236 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2237 /* krb5_data krb5_ap_req; */
2238 krb5_data *enc_ticket;
2239 krb5_data authenticator, *authp = NULL;
2240 EVP_CIPHER_CTX ciph_ctx;
2241 const EVP_CIPHER *enc = NULL;
2242 unsigned char iv[EVP_MAX_IV_LENGTH];
2243 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2244 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2245 + EVP_MAX_IV_LENGTH];
2246 int padl, outl = sizeof(epms);
2248 EVP_CIPHER_CTX_init(&ciph_ctx);
2251 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2253 #endif /* KSSL_DEBUG */
2257 if (KRB5SENDAUTH) authp = &authenticator;
2258 #endif /* KRB5SENDAUTH */
2260 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2262 enc = kssl_map_enc(kssl_ctx->enctype);
2267 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2268 if (krb5rc && kssl_err.text)
2269 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2271 #endif /* KSSL_DEBUG */
2275 ssl3_send_alert(s,SSL3_AL_FATAL,
2276 SSL_AD_HANDSHAKE_FAILURE);
2277 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2282 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2283 ** in place of RFC 2712 KerberosWrapper, as in:
2285 ** Send ticket (copy to *p, set n = length)
2286 ** n = krb5_ap_req.length;
2287 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2288 ** if (krb5_ap_req.data)
2289 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2291 ** Now using real RFC 2712 KerberosWrapper
2292 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2293 ** Note: 2712 "opaque" types are here replaced
2294 ** with a 2-byte length followed by the value.
2296 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2297 ** Where "xx xx" = length bytes. Shown here with
2298 ** optional authenticator omitted.
2301 /* KerberosWrapper.Ticket */
2302 s2n(enc_ticket->length,p);
2303 memcpy(p, enc_ticket->data, enc_ticket->length);
2304 p+= enc_ticket->length;
2305 n = enc_ticket->length + 2;
2307 /* KerberosWrapper.Authenticator */
2308 if (authp && authp->length)
2310 s2n(authp->length,p);
2311 memcpy(p, authp->data, authp->length);
2313 n+= authp->length + 2;
2321 s2n(0,p);/* null authenticator length */
2325 tmp_buf[0]=s->client_version>>8;
2326 tmp_buf[1]=s->client_version&0xff;
2327 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2330 /* 20010420 VRS. Tried it this way; failed.
2331 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2332 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2333 ** kssl_ctx->length);
2334 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2337 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2338 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2340 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2342 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2344 if (outl > (int)sizeof epms)
2346 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2349 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2351 /* KerberosWrapper.EncryptedPreMasterSecret */
2353 memcpy(p, epms, outl);
2357 s->session->master_key_length=
2358 s->method->ssl3_enc->generate_master_secret(s,
2359 s->session->master_key,
2360 tmp_buf, sizeof tmp_buf);
2362 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2363 OPENSSL_cleanse(epms, outl);
2366 #ifndef OPENSSL_NO_DH
2367 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2369 DH *dh_srvr,*dh_clnt;
2371 if (s->session->sess_cert == NULL)
2373 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2374 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2378 if (s->session->sess_cert->peer_dh_tmp != NULL)
2379 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2382 /* we get them from the cert */
2383 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2384 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2388 /* generate a new random key */
2389 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2391 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2394 if (!DH_generate_key(dh_clnt))
2396 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2400 /* use the 'p' output buffer for the DH key, but
2401 * make sure to clear it out afterwards */
2403 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2407 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2411 /* generate master key from the result */
2412 s->session->master_key_length=
2413 s->method->ssl3_enc->generate_master_secret(s,
2414 s->session->master_key,p,n);
2418 /* send off the data */
2419 n=BN_num_bytes(dh_clnt->pub_key);
2421 BN_bn2bin(dh_clnt->pub_key,p);
2426 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2430 #ifndef OPENSSL_NO_ECDH
2431 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2433 const EC_GROUP *srvr_group = NULL;
2435 int ecdh_clnt_cert = 0;
2438 /* Did we send out the client's
2439 * ECDH share for use in premaster
2440 * computation as part of client certificate?
2441 * If so, set ecdh_clnt_cert to 1.
2443 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2445 /* XXX: For now, we do not support client
2446 * authentication using ECDH certificates.
2447 * To add such support, one needs to add
2448 * code that checks for appropriate
2449 * conditions and sets ecdh_clnt_cert to 1.
2450 * For example, the cert have an ECC
2451 * key on the same curve as the server's
2452 * and the key should be authorized for
2455 * One also needs to add code in ssl3_connect
2456 * to skip sending the certificate verify
2459 * if ((s->cert->key->privatekey != NULL) &&
2460 * (s->cert->key->privatekey->type ==
2461 * EVP_PKEY_EC) && ...)
2462 * ecdh_clnt_cert = 1;
2466 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2468 tkey = s->session->sess_cert->peer_ecdh_tmp;
2472 /* Get the Server Public Key from Cert */
2473 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2474 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2475 if ((srvr_pub_pkey == NULL) ||
2476 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2477 (srvr_pub_pkey->pkey.ec == NULL))
2479 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2480 ERR_R_INTERNAL_ERROR);
2484 tkey = srvr_pub_pkey->pkey.ec;
2487 srvr_group = EC_KEY_get0_group(tkey);
2488 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2490 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2492 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2493 ERR_R_INTERNAL_ERROR);
2497 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2499 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2503 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2505 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2510 /* Reuse key info from our certificate
2511 * We only need our private key to perform
2512 * the ECDH computation.
2514 const BIGNUM *priv_key;
2515 tkey = s->cert->key->privatekey->pkey.ec;
2516 priv_key = EC_KEY_get0_private_key(tkey);
2517 if (priv_key == NULL)
2519 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2522 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2524 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2530 /* Generate a new ECDH key pair */
2531 if (!(EC_KEY_generate_key(clnt_ecdh)))
2533 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2538 /* use the 'p' output buffer for the ECDH key, but
2539 * make sure to clear it out afterwards
2542 field_size = EC_GROUP_get_degree(srvr_group);
2543 if (field_size <= 0)
2545 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2549 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2552 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2557 /* generate master key from the result */
2558 s->session->master_key_length = s->method->ssl3_enc \
2559 -> generate_master_secret(s,
2560 s->session->master_key,
2563 memset(p, 0, n); /* clean up */
2567 /* Send empty client key exch message */
2572 /* First check the size of encoding and
2573 * allocate memory accordingly.
2576 EC_POINT_point2oct(srvr_group,
2577 EC_KEY_get0_public_key(clnt_ecdh),
2578 POINT_CONVERSION_UNCOMPRESSED,
2581 encodedPoint = (unsigned char *)
2582 OPENSSL_malloc(encoded_pt_len *
2583 sizeof(unsigned char));
2584 bn_ctx = BN_CTX_new();
2585 if ((encodedPoint == NULL) ||
2588 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2592 /* Encode the public key */
2593 n = EC_POINT_point2oct(srvr_group,
2594 EC_KEY_get0_public_key(clnt_ecdh),
2595 POINT_CONVERSION_UNCOMPRESSED,
2596 encodedPoint, encoded_pt_len, bn_ctx);
2598 *p = n; /* length of encoded point */
2599 /* Encoded point will be copied here */
2601 /* copy the point */
2602 memcpy((unsigned char *)p, encodedPoint, n);
2603 /* increment n to account for length field */
2607 /* Free allocated memory */
2608 BN_CTX_free(bn_ctx);
2609 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2610 if (clnt_ecdh != NULL)
2611 EC_KEY_free(clnt_ecdh);
2612 EVP_PKEY_free(srvr_pub_pkey);
2614 #endif /* !OPENSSL_NO_ECDH */
2615 else if (alg_k & SSL_kGOST)
2617 /* GOST key exchange message creation */
2618 EVP_PKEY_CTX *pkey_ctx;
2621 unsigned int md_len;
2623 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2624 EVP_MD_CTX *ukm_hash;
2627 /* Get server sertificate PKEY and create ctx from it */
2628 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2630 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2632 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2636 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2637 /* If we have send a certificate, and certificate key
2639 * parameters match those of server certificate, use
2640 * certificate key for key exchange
2643 /* Otherwise, generate ephemeral key pair */
2645 EVP_PKEY_encrypt_init(pkey_ctx);
2646 /* Generate session key */
2647 RAND_bytes(premaster_secret,32);
2648 /* If we have client certificate, use its secret as peer key */
2649 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2650 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2651 /* If there was an error - just ignore it. Ephemeral key
2657 /* Compute shared IV and store it in algorithm-specific
2659 ukm_hash = EVP_MD_CTX_create();
2660 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2661 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2662 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2663 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2664 EVP_MD_CTX_destroy(ukm_hash);
2665 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2667 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2671 /* Make GOST keytransport blob message */
2672 /*Encapsulate it into sequence */
2673 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2675 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2676 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2683 *(p++)= msglen & 0xff;
2688 *(p++)= msglen & 0xff;
2691 memcpy(p, tmp, msglen);
2692 /* Check if pubkey from client certificate was used */
2693 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2695 /* Set flag "skip certificate verify" */
2696 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2698 EVP_PKEY_CTX_free(pkey_ctx);
2699 s->session->master_key_length=
2700 s->method->ssl3_enc->generate_master_secret(s,
2701 s->session->master_key,premaster_secret,32);
2702 EVP_PKEY_free(pub_key);
2705 #ifndef OPENSSL_NO_SRP
2706 else if (alg_k & SSL_kSRP)
2708 if (s->srp_ctx.A != NULL)
2710 /* send off the data */
2711 n=BN_num_bytes(s->srp_ctx.A);
2713 BN_bn2bin(s->srp_ctx.A,p);
2718 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2721 if (s->session->srp_username != NULL)
2722 OPENSSL_free(s->session->srp_username);
2723 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2724 if (s->session->srp_username == NULL)
2726 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2727 ERR_R_MALLOC_FAILURE);
2731 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2733 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2738 #ifndef OPENSSL_NO_PSK
2739 else if (alg_k & SSL_kPSK)
2741 char identity[PSK_MAX_IDENTITY_LEN];
2742 unsigned char *t = NULL;
2743 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2744 unsigned int pre_ms_len = 0, psk_len = 0;
2748 if (s->psk_client_callback == NULL)
2750 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2751 SSL_R_PSK_NO_CLIENT_CB);
2755 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2756 identity, PSK_MAX_IDENTITY_LEN,
2757 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2758 if (psk_len > PSK_MAX_PSK_LEN)
2760 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2761 ERR_R_INTERNAL_ERROR);
2764 else if (psk_len == 0)
2766 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2767 SSL_R_PSK_IDENTITY_NOT_FOUND);
2771 /* create PSK pre_master_secret */
2772 pre_ms_len = 2+psk_len+2+psk_len;
2774 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2776 memset(t, 0, psk_len);
2780 if (s->session->psk_identity_hint != NULL)
2781 OPENSSL_free(s->session->psk_identity_hint);
2782 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2783 if (s->ctx->psk_identity_hint != NULL &&
2784 s->session->psk_identity_hint == NULL)
2786 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2787 ERR_R_MALLOC_FAILURE);
2791 if (s->session->psk_identity != NULL)
2792 OPENSSL_free(s->session->psk_identity);
2793 s->session->psk_identity = BUF_strdup(identity);
2794 if (s->session->psk_identity == NULL)
2796 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2797 ERR_R_MALLOC_FAILURE);
2801 s->session->master_key_length =
2802 s->method->ssl3_enc->generate_master_secret(s,
2803 s->session->master_key,
2804 psk_or_pre_ms, pre_ms_len);
2805 n = strlen(identity);
2807 memcpy(p, identity, n);
2811 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2812 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2815 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2822 ssl3_send_alert(s, SSL3_AL_FATAL,
2823 SSL_AD_HANDSHAKE_FAILURE);
2824 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2825 ERR_R_INTERNAL_ERROR);
2829 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2832 s->state=SSL3_ST_CW_KEY_EXCH_B;
2833 /* number of bytes to write */
2838 /* SSL3_ST_CW_KEY_EXCH_B */
2839 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2841 #ifndef OPENSSL_NO_ECDH
2842 BN_CTX_free(bn_ctx);
2843 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2844 if (clnt_ecdh != NULL)
2845 EC_KEY_free(clnt_ecdh);
2846 EVP_PKEY_free(srvr_pub_pkey);
2851 int ssl3_send_client_verify(SSL *s)
2853 unsigned char *p,*d;
2854 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2856 EVP_PKEY_CTX *pctx=NULL;
2857 #ifndef OPENSSL_NO_RSA
2863 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2865 d=(unsigned char *)s->init_buf->data;
2867 pkey=s->cert->key->privatekey;
2868 /* Create context from key and test if sha1 is allowed as digest */
2869 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2870 EVP_PKEY_sign_init(pctx);
2871 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2873 s->method->ssl3_enc->cert_verify_mac(s,
2875 &(data[MD5_DIGEST_LENGTH]));
2881 #ifndef OPENSSL_NO_RSA
2882 if (pkey->type == EVP_PKEY_RSA)
2884 s->method->ssl3_enc->cert_verify_mac(s,
2887 if (RSA_sign(NID_md5_sha1, data,
2888 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2889 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2891 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2899 #ifndef OPENSSL_NO_DSA
2900 if (pkey->type == EVP_PKEY_DSA)
2902 if (!DSA_sign(pkey->save_type,
2903 &(data[MD5_DIGEST_LENGTH]),
2904 SHA_DIGEST_LENGTH,&(p[2]),
2905 (unsigned int *)&j,pkey->pkey.dsa))
2907 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2915 #ifndef OPENSSL_NO_ECDSA
2916 if (pkey->type == EVP_PKEY_EC)
2918 if (!ECDSA_sign(pkey->save_type,
2919 &(data[MD5_DIGEST_LENGTH]),
2920 SHA_DIGEST_LENGTH,&(p[2]),
2921 (unsigned int *)&j,pkey->pkey.ec))
2923 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2932 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2934 unsigned char signbuf[64];
2937 s->method->ssl3_enc->cert_verify_mac(s,
2938 NID_id_GostR3411_94,
2940 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2941 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2942 ERR_R_INTERNAL_ERROR);
2945 for (i=63,j=0; i>=0; j++, i--) {
2953 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2956 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2959 s->state=SSL3_ST_CW_CERT_VRFY_B;
2960 s->init_num=(int)n+4;
2963 EVP_PKEY_CTX_free(pctx);
2964 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2966 EVP_PKEY_CTX_free(pctx);
2970 int ssl3_send_client_certificate(SSL *s)
2973 EVP_PKEY *pkey=NULL;
2977 if (s->state == SSL3_ST_CW_CERT_A)
2979 if ((s->cert == NULL) ||
2980 (s->cert->key->x509 == NULL) ||
2981 (s->cert->key->privatekey == NULL))
2982 s->state=SSL3_ST_CW_CERT_B;
2984 s->state=SSL3_ST_CW_CERT_C;
2987 /* We need to get a client cert */
2988 if (s->state == SSL3_ST_CW_CERT_B)
2990 /* If we get an error, we need to
2991 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2992 * We then get retied later */
2994 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2997 s->rwstate=SSL_X509_LOOKUP;
3000 s->rwstate=SSL_NOTHING;
3001 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3003 s->state=SSL3_ST_CW_CERT_B;
3004 if ( !SSL_use_certificate(s,x509) ||
3005 !SSL_use_PrivateKey(s,pkey))
3011 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3014 if (x509 != NULL) X509_free(x509);
3015 if (pkey != NULL) EVP_PKEY_free(pkey);
3018 if (s->version == SSL3_VERSION)
3020 s->s3->tmp.cert_req=0;
3021 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3026 s->s3->tmp.cert_req=2;
3030 /* Ok, we have a cert */
3031 s->state=SSL3_ST_CW_CERT_C;
3034 if (s->state == SSL3_ST_CW_CERT_C)
3036 s->state=SSL3_ST_CW_CERT_D;
3037 l=ssl3_output_cert_chain(s,
3038 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3042 /* SSL3_ST_CW_CERT_D */
3043 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3046 #define has_bits(i,m) (((i)&(m)) == (m))
3048 int ssl3_check_cert_and_algorithm(SSL *s)
3052 EVP_PKEY *pkey=NULL;
3054 #ifndef OPENSSL_NO_RSA
3057 #ifndef OPENSSL_NO_DH
3061 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3062 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3064 /* we don't have a certificate */
3065 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3068 sc=s->session->sess_cert;
3071 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3075 #ifndef OPENSSL_NO_RSA
3076 rsa=s->session->sess_cert->peer_rsa_tmp;
3078 #ifndef OPENSSL_NO_DH
3079 dh=s->session->sess_cert->peer_dh_tmp;
3082 /* This is the passed certificate */
3084 idx=sc->peer_cert_type;
3085 #ifndef OPENSSL_NO_ECDH
3086 if (idx == SSL_PKEY_ECC)
3088 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3090 { /* check failed */
3091 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3100 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3101 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3102 EVP_PKEY_free(pkey);
3105 /* Check that we have a certificate if we require one */
3106 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3108 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3111 #ifndef OPENSSL_NO_DSA
3112 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3114 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3118 #ifndef OPENSSL_NO_RSA
3119 if ((alg_k & SSL_kRSA) &&
3120 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3122 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3126 #ifndef OPENSSL_NO_DH
3127 if ((alg_k & SSL_kEDH) &&
3128 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3130 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3133 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3135 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3138 #ifndef OPENSSL_NO_DSA
3139 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3141 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3147 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3149 #ifndef OPENSSL_NO_RSA
3150 if (alg_k & SSL_kRSA)
3153 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3155 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3161 #ifndef OPENSSL_NO_DH
3162 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3165 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3167 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3174 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3180 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3185 /* Check to see if handshake is full or resumed. Usually this is just a
3186 * case of checking to see if a cache hit has occurred. In the case of
3187 * session tickets we have to check the next message to be sure.
3190 #ifndef OPENSSL_NO_TLSEXT
3191 # ifndef OPENSSL_NO_NEXTPROTONEG
3192 int ssl3_send_next_proto(SSL *s)
3194 unsigned int len, padding_len;
3197 if (s->state == SSL3_ST_CW_NEXT_PROTO_A)
3199 len = s->next_proto_negotiated_len;
3200 padding_len = 32 - ((len + 2) % 32);
3201 d = (unsigned char *)s->init_buf->data;
3203 memcpy(d + 5, s->next_proto_negotiated, len);
3204 d[5 + len] = padding_len;
3205 memset(d + 6 + len, 0, padding_len);
3206 *(d++)=SSL3_MT_NEXT_PROTO;
3207 l2n3(2 + len + padding_len, d);
3208 s->state = SSL3_ST_CW_NEXT_PROTO_B;
3209 s->init_num = 4 + 2 + len + padding_len;
3213 return ssl3_do_write(s, SSL3_RT_HANDSHAKE);
3217 int ssl3_check_finished(SSL *s)
3221 /* If we have no ticket it cannot be a resumed session. */
3222 if (!s->session->tlsext_tick)
3224 /* this function is called when we really expect a Certificate
3225 * message, so permit appropriate message length */
3226 n=s->method->ssl_get_message(s,
3232 if (!ok) return((int)n);
3233 s->s3->tmp.reuse_message = 1;
3234 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3235 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3242 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3245 #ifndef OPENSSL_NO_ENGINE
3246 if (s->ctx->client_cert_engine)
3248 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3249 SSL_get_client_CA_list(s),
3250 px509, ppkey, NULL, NULL, NULL);
3255 if (s->ctx->client_cert_cb)
3256 i = s->ctx->client_cert_cb(s,px509,ppkey);