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 "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>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
170 static const SSL_METHOD *ssl3_get_client_method(int ver)
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
181 ssl3_get_client_method)
183 int ssl3_connect(SSL *s)
186 unsigned long Time=(unsigned long)time(NULL);
187 void (*cb)(const SSL *ssl,int type,int val)=NULL;
189 int new_state,state,skip=0;
191 RAND_add(&Time,sizeof(Time),0);
195 if (s->info_callback != NULL)
197 else if (s->ctx->info_callback != NULL)
198 cb=s->ctx->info_callback;
201 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
209 case SSL_ST_RENEGOTIATE:
211 s->state=SSL_ST_CONNECT;
212 s->ctx->stats.sess_connect_renegotiate++;
216 case SSL_ST_BEFORE|SSL_ST_CONNECT:
217 case SSL_ST_OK|SSL_ST_CONNECT:
220 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
222 if ((s->version & 0xff00 ) != 0x0300)
224 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
229 /* s->version=SSL3_VERSION; */
230 s->type=SSL_ST_CONNECT;
232 if (s->init_buf == NULL)
234 if ((buf=BUF_MEM_new()) == NULL)
239 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
248 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
250 /* setup buffing BIO */
251 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
253 /* don't push the buffering BIO quite yet */
255 ssl3_init_finished_mac(s);
257 s->state=SSL3_ST_CW_CLNT_HELLO_A;
258 s->ctx->stats.sess_connect++;
262 case SSL3_ST_CW_CLNT_HELLO_A:
263 case SSL3_ST_CW_CLNT_HELLO_B:
266 ret=ssl3_client_hello(s);
267 if (ret <= 0) goto end;
268 s->state=SSL3_ST_CR_SRVR_HELLO_A;
271 /* turn on buffering for the next lot of output */
272 if (s->bbio != s->wbio)
273 s->wbio=BIO_push(s->bbio,s->wbio);
277 case SSL3_ST_CR_SRVR_HELLO_A:
278 case SSL3_ST_CR_SRVR_HELLO_B:
279 ret=ssl3_get_server_hello(s);
280 #ifndef OPENSSL_NO_SRP
281 if (ret == 0 && s->s3->warn_alert == SSL_AD_MISSING_SRP_USERNAME)
283 if (!SRP_have_to_put_srp_username(s))
285 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_MISSING_SRP_USERNAME);
286 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_USER_CANCELLED);
289 s->state=SSL3_ST_CW_CLNT_HELLO_A;
290 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
294 if (ret <= 0) goto end;
297 s->state=SSL3_ST_CR_FINISHED_A;
299 s->state=SSL3_ST_CR_CERT_A;
303 case SSL3_ST_CR_CERT_A:
304 case SSL3_ST_CR_CERT_B:
305 #ifndef OPENSSL_NO_TLSEXT
306 ret=ssl3_check_finished(s);
307 if (ret <= 0) goto end;
311 if (s->tlsext_ticket_expected)
312 s->state=SSL3_ST_CR_SESSION_TICKET_A;
314 s->state=SSL3_ST_CR_FINISHED_A;
319 /* Check if it is anon DH/ECDH */
321 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
322 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
324 ret=ssl3_get_server_certificate(s);
325 if (ret <= 0) goto end;
326 #ifndef OPENSSL_NO_TLSEXT
327 if (s->tlsext_status_expected)
328 s->state=SSL3_ST_CR_CERT_STATUS_A;
330 s->state=SSL3_ST_CR_KEY_EXCH_A;
335 s->state=SSL3_ST_CR_KEY_EXCH_A;
342 s->state=SSL3_ST_CR_KEY_EXCH_A;
347 case SSL3_ST_CR_KEY_EXCH_A:
348 case SSL3_ST_CR_KEY_EXCH_B:
349 ret=ssl3_get_key_exchange(s);
350 if (ret <= 0) goto end;
351 s->state=SSL3_ST_CR_CERT_REQ_A;
354 /* at this point we check that we have the
355 * required stuff from the server */
356 if (!ssl3_check_cert_and_algorithm(s))
363 case SSL3_ST_CR_CERT_REQ_A:
364 case SSL3_ST_CR_CERT_REQ_B:
365 ret=ssl3_get_certificate_request(s);
366 if (ret <= 0) goto end;
367 s->state=SSL3_ST_CR_SRVR_DONE_A;
371 case SSL3_ST_CR_SRVR_DONE_A:
372 case SSL3_ST_CR_SRVR_DONE_B:
373 ret=ssl3_get_server_done(s);
374 if (ret <= 0) goto end;
375 #ifndef OPENSSL_NO_SRP
376 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
378 if ((ret = SRP_Calc_A_param(s))<=0)
380 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
381 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
386 if (s->s3->tmp.cert_req)
387 s->state=SSL3_ST_CW_CERT_A;
389 s->state=SSL3_ST_CW_KEY_EXCH_A;
394 case SSL3_ST_CW_CERT_A:
395 case SSL3_ST_CW_CERT_B:
396 case SSL3_ST_CW_CERT_C:
397 case SSL3_ST_CW_CERT_D:
398 ret=ssl3_send_client_certificate(s);
399 if (ret <= 0) goto end;
400 s->state=SSL3_ST_CW_KEY_EXCH_A;
404 case SSL3_ST_CW_KEY_EXCH_A:
405 case SSL3_ST_CW_KEY_EXCH_B:
406 ret=ssl3_send_client_key_exchange(s);
407 if (ret <= 0) goto end;
408 /* EAY EAY EAY need to check for DH fix cert
410 /* For TLS, cert_req is set to 2, so a cert chain
411 * of nothing is sent, but no verify packet is sent */
412 /* XXX: For now, we do not support client
413 * authentication in ECDH cipher suites with
414 * ECDH (rather than ECDSA) certificates.
415 * We need to skip the certificate verify
416 * message when client's ECDH public key is sent
417 * inside the client certificate.
419 if (s->s3->tmp.cert_req == 1)
421 s->state=SSL3_ST_CW_CERT_VRFY_A;
425 s->state=SSL3_ST_CW_CHANGE_A;
426 s->s3->change_cipher_spec=0;
428 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
430 s->state=SSL3_ST_CW_CHANGE_A;
431 s->s3->change_cipher_spec=0;
437 case SSL3_ST_CW_CERT_VRFY_A:
438 case SSL3_ST_CW_CERT_VRFY_B:
439 ret=ssl3_send_client_verify(s);
440 if (ret <= 0) goto end;
441 s->state=SSL3_ST_CW_CHANGE_A;
443 s->s3->change_cipher_spec=0;
446 case SSL3_ST_CW_CHANGE_A:
447 case SSL3_ST_CW_CHANGE_B:
448 ret=ssl3_send_change_cipher_spec(s,
449 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
450 if (ret <= 0) goto end;
451 s->state=SSL3_ST_CW_FINISHED_A;
454 s->session->cipher=s->s3->tmp.new_cipher;
455 #ifdef OPENSSL_NO_COMP
456 s->session->compress_meth=0;
458 if (s->s3->tmp.new_compression == NULL)
459 s->session->compress_meth=0;
461 s->session->compress_meth=
462 s->s3->tmp.new_compression->id;
464 if (!s->method->ssl3_enc->setup_key_block(s))
470 if (!s->method->ssl3_enc->change_cipher_state(s,
471 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
479 case SSL3_ST_CW_FINISHED_A:
480 case SSL3_ST_CW_FINISHED_B:
481 ret=ssl3_send_finished(s,
482 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
483 s->method->ssl3_enc->client_finished_label,
484 s->method->ssl3_enc->client_finished_label_len);
485 if (ret <= 0) goto end;
486 s->state=SSL3_ST_CW_FLUSH;
489 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
492 s->s3->tmp.next_state=SSL_ST_OK;
493 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
496 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
497 s->s3->delay_buf_pop_ret=0;
502 #ifndef OPENSSL_NO_TLSEXT
503 /* Allow NewSessionTicket if ticket expected */
504 if (s->tlsext_ticket_expected)
505 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
509 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
514 #ifndef OPENSSL_NO_TLSEXT
515 case SSL3_ST_CR_SESSION_TICKET_A:
516 case SSL3_ST_CR_SESSION_TICKET_B:
517 ret=ssl3_get_new_session_ticket(s);
518 if (ret <= 0) goto end;
519 s->state=SSL3_ST_CR_FINISHED_A;
523 case SSL3_ST_CR_CERT_STATUS_A:
524 case SSL3_ST_CR_CERT_STATUS_B:
525 ret=ssl3_get_cert_status(s);
526 if (ret <= 0) goto end;
527 s->state=SSL3_ST_CR_KEY_EXCH_A;
532 case SSL3_ST_CR_FINISHED_A:
533 case SSL3_ST_CR_FINISHED_B:
535 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
536 SSL3_ST_CR_FINISHED_B);
537 if (ret <= 0) goto end;
540 s->state=SSL3_ST_CW_CHANGE_A;
546 case SSL3_ST_CW_FLUSH:
547 s->rwstate=SSL_WRITING;
548 if (BIO_flush(s->wbio) <= 0)
553 s->rwstate=SSL_NOTHING;
554 s->state=s->s3->tmp.next_state;
558 /* clean a few things up */
559 ssl3_cleanup_key_block(s);
561 if (s->init_buf != NULL)
563 BUF_MEM_free(s->init_buf);
567 /* If we are not 'joining' the last two packets,
568 * remove the buffering now */
569 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
570 ssl_free_wbio_buffer(s);
571 /* else do it later in ssl3_write */
577 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
578 if (s->hit) s->ctx->stats.sess_hit++;
582 s->handshake_func=ssl3_connect;
583 s->ctx->stats.sess_connect_good++;
585 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
591 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
597 /* did we do anything */
598 if (!s->s3->tmp.reuse_message && !skip)
602 if ((ret=BIO_flush(s->wbio)) <= 0)
606 if ((cb != NULL) && (s->state != state))
610 cb(s,SSL_CB_CONNECT_LOOP,1);
621 cb(s,SSL_CB_CONNECT_EXIT,ret);
626 int ssl3_client_hello(SSL *s)
631 unsigned long Time,l;
632 #ifndef OPENSSL_NO_COMP
637 buf=(unsigned char *)s->init_buf->data;
638 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
640 SSL_SESSION *sess = s->session;
641 if ((sess == NULL) ||
642 (sess->ssl_version != s->version) ||
643 #ifdef OPENSSL_NO_TLSEXT
644 !sess->session_id_length ||
646 (!sess->session_id_length && !sess->tlsext_tick) ||
648 (sess->not_resumable))
650 if (!ssl_get_new_session(s,0))
653 /* else use the pre-loaded session */
655 p=s->s3->client_random;
656 Time=(unsigned long)time(NULL); /* Time */
658 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
661 /* Do the message type and length last */
664 *(p++)=s->version>>8;
665 *(p++)=s->version&0xff;
666 s->client_version=s->version;
669 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
676 i=s->session->session_id_length;
680 if (i > (int)sizeof(s->session->session_id))
682 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
685 memcpy(p,s->session->session_id,i);
689 /* Ciphers supported */
690 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
693 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
700 #ifdef OPENSSL_NO_COMP
704 if ((s->options & SSL_OP_NO_COMPRESSION)
705 || !s->ctx->comp_methods)
708 j=sk_SSL_COMP_num(s->ctx->comp_methods);
712 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
716 *(p++)=0; /* Add the NULL method */
718 #ifndef OPENSSL_NO_TLSEXT
720 if (ssl_prepare_clienthello_tlsext(s) <= 0)
722 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
725 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
727 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
734 *(d++)=SSL3_MT_CLIENT_HELLO;
737 s->state=SSL3_ST_CW_CLNT_HELLO_B;
738 /* number of bytes to write */
743 /* SSL3_ST_CW_CLNT_HELLO_B */
744 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
749 int ssl3_get_server_hello(SSL *s)
751 STACK_OF(SSL_CIPHER) *sk;
757 #ifndef OPENSSL_NO_COMP
761 n=s->method->ssl_get_message(s,
762 SSL3_ST_CR_SRVR_HELLO_A,
763 SSL3_ST_CR_SRVR_HELLO_B,
768 if (!ok) return((int)n);
770 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
772 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
774 if ( s->d1->send_cookie == 0)
776 s->s3->tmp.reuse_message = 1;
779 else /* already sent a cookie */
781 al=SSL_AD_UNEXPECTED_MESSAGE;
782 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
788 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
790 al=SSL_AD_UNEXPECTED_MESSAGE;
791 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
795 d=p=(unsigned char *)s->init_msg;
797 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
799 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
800 s->version=(s->version&0xff00)|p[1];
801 al=SSL_AD_PROTOCOL_VERSION;
806 /* load the server hello data */
807 /* load the server random */
808 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
811 /* get the session-id */
814 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
816 al=SSL_AD_ILLEGAL_PARAMETER;
817 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
821 #ifndef OPENSSL_NO_TLSEXT
822 /* check if we want to resume the session based on external pre-shared secret */
823 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
825 SSL_CIPHER *pref_cipher=NULL;
826 s->session->master_key_length=sizeof(s->session->master_key);
827 if (s->tls_session_secret_cb(s, s->session->master_key,
828 &s->session->master_key_length,
830 s->tls_session_secret_cb_arg))
832 s->session->cipher = pref_cipher ?
833 pref_cipher : ssl_get_cipher_by_char(s, p+j);
836 #endif /* OPENSSL_NO_TLSEXT */
838 if (j != 0 && j == s->session->session_id_length
839 && memcmp(p,s->session->session_id,j) == 0)
841 if(s->sid_ctx_length != s->session->sid_ctx_length
842 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
844 /* actually a client application bug */
845 al=SSL_AD_ILLEGAL_PARAMETER;
846 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
851 else /* a miss or crap from the other end */
853 /* If we were trying for session-id reuse, make a new
854 * SSL_SESSION so we don't stuff up other people */
856 if (s->session->session_id_length > 0)
858 if (!ssl_get_new_session(s,0))
860 al=SSL_AD_INTERNAL_ERROR;
864 s->session->session_id_length=j;
865 memcpy(s->session->session_id,p,j); /* j could be 0 */
868 c=ssl_get_cipher_by_char(s,p);
872 al=SSL_AD_ILLEGAL_PARAMETER;
873 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
876 p+=ssl_put_cipher_by_char(s,NULL,NULL);
878 sk=ssl_get_ciphers_by_id(s);
879 i=sk_SSL_CIPHER_find(sk,c);
882 /* we did not say we would use this cipher */
883 al=SSL_AD_ILLEGAL_PARAMETER;
884 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
888 /* Depending on the session caching (internal/external), the cipher
889 and/or cipher_id values may not be set. Make sure that
890 cipher_id is set and use it for comparison. */
891 if (s->session->cipher)
892 s->session->cipher_id = s->session->cipher->id;
893 if (s->hit && (s->session->cipher_id != c->id))
895 /* Workaround is now obsolete */
898 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
901 al=SSL_AD_ILLEGAL_PARAMETER;
902 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
906 s->s3->tmp.new_cipher=c;
907 /* Don't digest cached records if TLS v1.2: we may need them for
908 * client authentication.
910 if (s->version < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
912 /* lets get the compression algorithm */
914 #ifdef OPENSSL_NO_COMP
917 al=SSL_AD_ILLEGAL_PARAMETER;
918 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
921 /* If compression is disabled we'd better not try to resume a session
924 if (s->session->compress_meth != 0)
926 al=SSL_AD_INTERNAL_ERROR;
927 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
932 if (s->hit && j != s->session->compress_meth)
934 al=SSL_AD_ILLEGAL_PARAMETER;
935 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
940 else if (s->options & SSL_OP_NO_COMPRESSION)
942 al=SSL_AD_ILLEGAL_PARAMETER;
943 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
947 comp=ssl3_comp_find(s->ctx->comp_methods,j);
949 if ((j != 0) && (comp == NULL))
951 al=SSL_AD_ILLEGAL_PARAMETER;
952 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
957 s->s3->tmp.new_compression=comp;
961 #ifndef OPENSSL_NO_TLSEXT
963 if (s->version >= SSL3_VERSION)
965 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
967 /* 'al' set by ssl_parse_serverhello_tlsext */
968 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
971 if (ssl_check_serverhello_tlsext(s) <= 0)
973 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
981 /* wrong packet length */
982 al=SSL_AD_DECODE_ERROR;
983 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
989 ssl3_send_alert(s,SSL3_AL_FATAL,al);
994 int ssl3_get_server_certificate(SSL *s)
997 unsigned long n,nc,llen,l;
999 const unsigned char *q,*p;
1001 STACK_OF(X509) *sk=NULL;
1003 EVP_PKEY *pkey=NULL;
1004 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1006 n=s->method->ssl_get_message(s,
1013 if (!ok) return((int)n);
1015 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1016 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1017 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1019 s->s3->tmp.reuse_message=1;
1023 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1025 al=SSL_AD_UNEXPECTED_MESSAGE;
1026 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1029 p=d=(unsigned char *)s->init_msg;
1031 if ((sk=sk_X509_new_null()) == NULL)
1033 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1040 al=SSL_AD_DECODE_ERROR;
1041 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1044 for (nc=0; nc<llen; )
1047 if ((l+nc+3) > llen)
1049 al=SSL_AD_DECODE_ERROR;
1050 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1055 x=d2i_X509(NULL,&q,l);
1058 al=SSL_AD_BAD_CERTIFICATE;
1059 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1064 al=SSL_AD_DECODE_ERROR;
1065 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1068 if (!sk_X509_push(sk,x))
1070 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1078 i=ssl_verify_cert_chain(s,sk);
1079 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1080 #ifndef OPENSSL_NO_KRB5
1081 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1082 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1083 #endif /* OPENSSL_NO_KRB5 */
1086 al=ssl_verify_alarm_type(s->verify_result);
1087 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1090 ERR_clear_error(); /* but we keep s->verify_result */
1092 sc=ssl_sess_cert_new();
1093 if (sc == NULL) goto err;
1095 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1096 s->session->sess_cert=sc;
1099 /* Inconsistency alert: cert_chain does include the peer's
1100 * certificate, which we don't include in s3_srvr.c */
1101 x=sk_X509_value(sk,0);
1103 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1105 pkey=X509_get_pubkey(x);
1107 /* VRS: allow null cert if auth == KRB5 */
1108 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1109 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1113 printf("pkey,x = %p, %p\n", pkey,x);
1114 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1115 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1116 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1117 #endif /* KSSL_DEBUG */
1119 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1123 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1124 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1128 i=ssl_cert_type(x,pkey);
1129 if (need_cert && i < 0)
1133 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1134 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1140 sc->peer_cert_type=i;
1141 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1142 /* Why would the following ever happen?
1143 * We just created sc a couple of lines ago. */
1144 if (sc->peer_pkeys[i].x509 != NULL)
1145 X509_free(sc->peer_pkeys[i].x509);
1146 sc->peer_pkeys[i].x509=x;
1147 sc->peer_key= &(sc->peer_pkeys[i]);
1149 if (s->session->peer != NULL)
1150 X509_free(s->session->peer);
1151 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1156 sc->peer_cert_type=i;
1159 if (s->session->peer != NULL)
1160 X509_free(s->session->peer);
1161 s->session->peer=NULL;
1163 s->session->verify_result = s->verify_result;
1171 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1174 EVP_PKEY_free(pkey);
1176 sk_X509_pop_free(sk,X509_free);
1180 int ssl3_get_key_exchange(SSL *s)
1182 #ifndef OPENSSL_NO_RSA
1183 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1186 unsigned char *param,*p;
1187 int al,i,j,param_len,ok;
1189 EVP_PKEY *pkey=NULL;
1190 const EVP_MD *md = NULL;
1191 #ifndef OPENSSL_NO_RSA
1194 #ifndef OPENSSL_NO_DH
1197 #ifndef OPENSSL_NO_ECDH
1198 EC_KEY *ecdh = NULL;
1199 BN_CTX *bn_ctx = NULL;
1200 EC_POINT *srvr_ecpoint = NULL;
1202 int encoded_pt_len = 0;
1205 /* use same message size as in ssl3_get_certificate_request()
1206 * as ServerKeyExchange message may be skipped */
1207 n=s->method->ssl_get_message(s,
1208 SSL3_ST_CR_KEY_EXCH_A,
1209 SSL3_ST_CR_KEY_EXCH_B,
1213 if (!ok) return((int)n);
1215 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1217 #ifndef OPENSSL_NO_PSK
1218 /* In plain PSK ciphersuite, ServerKeyExchange can be
1219 omitted if no identity hint is sent. Set
1220 session->sess_cert anyway to avoid problems
1222 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1224 s->session->sess_cert=ssl_sess_cert_new();
1225 if (s->ctx->psk_identity_hint)
1226 OPENSSL_free(s->ctx->psk_identity_hint);
1227 s->ctx->psk_identity_hint = NULL;
1230 s->s3->tmp.reuse_message=1;
1234 param=p=(unsigned char *)s->init_msg;
1235 if (s->session->sess_cert != NULL)
1237 #ifndef OPENSSL_NO_RSA
1238 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1240 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1241 s->session->sess_cert->peer_rsa_tmp=NULL;
1244 #ifndef OPENSSL_NO_DH
1245 if (s->session->sess_cert->peer_dh_tmp)
1247 DH_free(s->session->sess_cert->peer_dh_tmp);
1248 s->session->sess_cert->peer_dh_tmp=NULL;
1251 #ifndef OPENSSL_NO_ECDH
1252 if (s->session->sess_cert->peer_ecdh_tmp)
1254 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1255 s->session->sess_cert->peer_ecdh_tmp=NULL;
1261 s->session->sess_cert=ssl_sess_cert_new();
1265 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1266 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1267 EVP_MD_CTX_init(&md_ctx);
1269 #ifndef OPENSSL_NO_PSK
1270 if (alg_k & SSL_kPSK)
1272 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1274 al=SSL_AD_HANDSHAKE_FAILURE;
1277 /* Store PSK identity hint for later use, hint is used
1278 * in ssl3_send_client_key_exchange. Assume that the
1279 * maximum length of a PSK identity hint can be as
1280 * long as the maximum length of a PSK identity. */
1281 if (i > PSK_MAX_IDENTITY_LEN)
1283 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1284 SSL_R_DATA_LENGTH_TOO_LONG);
1289 al=SSL_AD_DECODE_ERROR;
1290 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1291 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1294 /* If received PSK identity hint contains NULL
1295 * characters, the hint is truncated from the first
1296 * NULL. p may not be ending with NULL, so create a
1297 * NULL-terminated string. */
1298 memcpy(tmp_id_hint, p, i);
1299 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1300 if (s->ctx->psk_identity_hint != NULL)
1301 OPENSSL_free(s->ctx->psk_identity_hint);
1302 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1303 if (s->ctx->psk_identity_hint == NULL)
1305 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1313 #endif /* !OPENSSL_NO_PSK */
1314 #ifndef OPENSSL_NO_SRP
1315 if (alg_k & SSL_kSRP)
1321 al=SSL_AD_DECODE_ERROR;
1322 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1325 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1327 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1336 al=SSL_AD_DECODE_ERROR;
1337 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1340 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1342 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1347 i = (unsigned int)(p[0]);
1352 al=SSL_AD_DECODE_ERROR;
1353 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1356 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1358 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1367 al=SSL_AD_DECODE_ERROR;
1368 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1371 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1373 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1379 /* We must check if there is a certificate */
1380 #ifndef OPENSSL_NO_RSA
1381 if (alg_a & SSL_aRSA)
1382 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1387 #ifndef OPENSSL_NO_DSA
1388 else if (alg_a & SSL_aDSS)
1389 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1393 #endif /* !OPENSSL_NO_SRP */
1394 #ifndef OPENSSL_NO_RSA
1395 if (alg_k & SSL_kRSA)
1397 if ((rsa=RSA_new()) == NULL)
1399 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1406 al=SSL_AD_DECODE_ERROR;
1407 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1410 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1412 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1421 al=SSL_AD_DECODE_ERROR;
1422 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1425 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1427 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1433 /* this should be because we are using an export cipher */
1434 if (alg_a & SSL_aRSA)
1435 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1438 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1441 s->session->sess_cert->peer_rsa_tmp=rsa;
1444 #else /* OPENSSL_NO_RSA */
1448 #ifndef OPENSSL_NO_DH
1449 else if (alg_k & SSL_kEDH)
1451 if ((dh=DH_new()) == NULL)
1453 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1460 al=SSL_AD_DECODE_ERROR;
1461 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1464 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1466 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1475 al=SSL_AD_DECODE_ERROR;
1476 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1479 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1481 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1490 al=SSL_AD_DECODE_ERROR;
1491 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1494 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1496 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1502 #ifndef OPENSSL_NO_RSA
1503 if (alg_a & SSL_aRSA)
1504 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1509 #ifndef OPENSSL_NO_DSA
1510 else if (alg_a & SSL_aDSS)
1511 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1513 /* else anonymous DH, so no certificate or pkey. */
1515 s->session->sess_cert->peer_dh_tmp=dh;
1518 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1520 al=SSL_AD_ILLEGAL_PARAMETER;
1521 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1524 #endif /* !OPENSSL_NO_DH */
1526 #ifndef OPENSSL_NO_ECDH
1527 else if (alg_k & SSL_kEECDH)
1530 const EC_GROUP *group;
1532 if ((ecdh=EC_KEY_new()) == NULL)
1534 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1538 /* Extract elliptic curve parameters and the
1539 * server's ephemeral ECDH public key.
1540 * Keep accumulating lengths of various components in
1541 * param_len and make sure it never exceeds n.
1544 /* XXX: For now we only support named (not generic) curves
1545 * and the ECParameters in this case is just three bytes.
1548 if ((param_len > n) ||
1549 (*p != NAMED_CURVE_TYPE) ||
1550 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1552 al=SSL_AD_INTERNAL_ERROR;
1553 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1557 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1560 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1563 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1565 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1568 EC_GROUP_free(ngroup);
1570 group = EC_KEY_get0_group(ecdh);
1572 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1573 (EC_GROUP_get_degree(group) > 163))
1575 al=SSL_AD_EXPORT_RESTRICTION;
1576 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1582 /* Next, get the encoded ECPoint */
1583 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1584 ((bn_ctx = BN_CTX_new()) == NULL))
1586 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1590 encoded_pt_len = *p; /* length of encoded point */
1592 param_len += (1 + encoded_pt_len);
1593 if ((param_len > n) ||
1594 (EC_POINT_oct2point(group, srvr_ecpoint,
1595 p, encoded_pt_len, bn_ctx) == 0))
1597 al=SSL_AD_DECODE_ERROR;
1598 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1605 /* The ECC/TLS specification does not mention
1606 * the use of DSA to sign ECParameters in the server
1607 * key exchange message. We do support RSA and ECDSA.
1610 #ifndef OPENSSL_NO_RSA
1611 else if (alg_a & SSL_aRSA)
1612 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1614 #ifndef OPENSSL_NO_ECDSA
1615 else if (alg_a & SSL_aECDSA)
1616 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1618 /* else anonymous ECDH, so no certificate or pkey. */
1619 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1620 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1622 BN_CTX_free(bn_ctx);
1624 EC_POINT_free(srvr_ecpoint);
1625 srvr_ecpoint = NULL;
1629 al=SSL_AD_UNEXPECTED_MESSAGE;
1630 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1633 #endif /* !OPENSSL_NO_ECDH */
1636 /* p points to the next byte, there are 'n' bytes left */
1638 /* if it was signed, check the signature */
1641 if (s->version >= TLS1_2_VERSION)
1643 int sigalg = tls12_get_sigid(pkey);
1644 /* Should never happen */
1647 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1650 /* Check key type is consistent with signature */
1651 if (sigalg != (int)p[1])
1653 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1654 al=SSL_AD_DECODE_ERROR;
1657 md = tls12_get_hash(p[0]);
1660 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1661 al=SSL_AD_DECODE_ERROR;
1665 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1675 j=EVP_PKEY_size(pkey);
1677 if ((i != n) || (n > j) || (n <= 0))
1679 /* wrong packet length */
1680 al=SSL_AD_DECODE_ERROR;
1681 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1685 #ifndef OPENSSL_NO_RSA
1686 if (pkey->type == EVP_PKEY_RSA && s->version < TLS1_2_VERSION)
1692 for (num=2; num > 0; num--)
1694 EVP_DigestInit_ex(&md_ctx,(num == 2)
1695 ?s->ctx->md5:s->ctx->sha1, NULL);
1696 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1697 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1698 EVP_DigestUpdate(&md_ctx,param,param_len);
1699 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1703 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1707 al=SSL_AD_DECRYPT_ERROR;
1708 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1714 al=SSL_AD_DECRYPT_ERROR;
1715 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1722 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1723 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1724 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1725 EVP_VerifyUpdate(&md_ctx,param,param_len);
1726 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1729 al=SSL_AD_DECRYPT_ERROR;
1730 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1737 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1738 /* aNULL or kPSK do not need public keys */
1740 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1743 /* still data left over */
1746 al=SSL_AD_DECODE_ERROR;
1747 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1751 EVP_PKEY_free(pkey);
1752 EVP_MD_CTX_cleanup(&md_ctx);
1755 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1757 EVP_PKEY_free(pkey);
1758 #ifndef OPENSSL_NO_RSA
1762 #ifndef OPENSSL_NO_DH
1766 #ifndef OPENSSL_NO_ECDH
1767 BN_CTX_free(bn_ctx);
1768 EC_POINT_free(srvr_ecpoint);
1772 EVP_MD_CTX_cleanup(&md_ctx);
1776 int ssl3_get_certificate_request(SSL *s)
1779 unsigned long n,nc,l;
1780 unsigned int llen, ctype_num,i;
1782 const unsigned char *p,*q;
1784 STACK_OF(X509_NAME) *ca_sk=NULL;
1786 n=s->method->ssl_get_message(s,
1787 SSL3_ST_CR_CERT_REQ_A,
1788 SSL3_ST_CR_CERT_REQ_B,
1793 if (!ok) return((int)n);
1795 s->s3->tmp.cert_req=0;
1797 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1799 s->s3->tmp.reuse_message=1;
1800 /* If we get here we don't need any cached handshake records
1801 * as we wont be doing client auth.
1803 if (s->s3->handshake_buffer)
1805 if (!ssl3_digest_cached_records(s))
1811 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1813 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1814 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1818 /* TLS does not like anon-DH with client cert */
1819 if (s->version > SSL3_VERSION)
1821 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1823 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1824 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1829 p=d=(unsigned char *)s->init_msg;
1831 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1833 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1837 /* get the certificate types */
1839 if (ctype_num > SSL3_CT_NUMBER)
1840 ctype_num=SSL3_CT_NUMBER;
1841 for (i=0; i<ctype_num; i++)
1842 s->s3->tmp.ctype[i]= p[i];
1844 /* HACK! For now just skip over signatature algorithms */
1845 if (s->version >= TLS1_2_VERSION)
1848 /* Check we have enough room for signature algorithms and
1849 * following length value.
1851 if ((unsigned long)(p - d + llen + 2) > n)
1853 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1854 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1857 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1859 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1860 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1866 /* get the CA RDNs */
1871 out=fopen("/tmp/vsign.der","w");
1872 fwrite(p,1,llen,out);
1877 if ((unsigned long)(p - d + llen) != n)
1879 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1880 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1884 for (nc=0; nc<llen; )
1887 if ((l+nc+2) > llen)
1889 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1890 goto cont; /* netscape bugs */
1891 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1892 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1898 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1900 /* If netscape tolerance is on, ignore errors */
1901 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1905 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1906 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1913 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1914 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1917 if (!sk_X509_NAME_push(ca_sk,xn))
1919 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1933 /* we should setup a certificate to return.... */
1934 s->s3->tmp.cert_req=1;
1935 s->s3->tmp.ctype_num=ctype_num;
1936 if (s->s3->tmp.ca_names != NULL)
1937 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1938 s->s3->tmp.ca_names=ca_sk;
1943 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1947 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1949 return(X509_NAME_cmp(*a,*b));
1951 #ifndef OPENSSL_NO_TLSEXT
1952 int ssl3_get_new_session_ticket(SSL *s)
1954 int ok,al,ret=0, ticklen;
1956 const unsigned char *p;
1959 n=s->method->ssl_get_message(s,
1960 SSL3_ST_CR_SESSION_TICKET_A,
1961 SSL3_ST_CR_SESSION_TICKET_B,
1969 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1971 s->s3->tmp.reuse_message=1;
1974 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1976 al=SSL_AD_UNEXPECTED_MESSAGE;
1977 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1982 /* need at least ticket_lifetime_hint + ticket length */
1983 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1984 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1988 p=d=(unsigned char *)s->init_msg;
1989 n2l(p, s->session->tlsext_tick_lifetime_hint);
1991 /* ticket_lifetime_hint + ticket_length + ticket */
1992 if (ticklen + 6 != n)
1994 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1995 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1998 if (s->session->tlsext_tick)
2000 OPENSSL_free(s->session->tlsext_tick);
2001 s->session->tlsext_ticklen = 0;
2003 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2004 if (!s->session->tlsext_tick)
2006 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2009 memcpy(s->session->tlsext_tick, p, ticklen);
2010 s->session->tlsext_ticklen = ticklen;
2011 /* There are two ways to detect a resumed ticket sesion.
2012 * One is to set an appropriate session ID and then the server
2013 * must return a match in ServerHello. This allows the normal
2014 * client session ID matching to work and we know much
2015 * earlier that the ticket has been accepted.
2017 * The other way is to set zero length session ID when the
2018 * ticket is presented and rely on the handshake to determine
2019 * session resumption.
2021 * We choose the former approach because this fits in with
2022 * assumptions elsewhere in OpenSSL. The session ID is set
2023 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2026 EVP_Digest(p, ticklen,
2027 s->session->session_id, &s->session->session_id_length,
2028 #ifndef OPENSSL_NO_SHA256
2029 EVP_sha256(), NULL);
2036 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2041 int ssl3_get_cert_status(SSL *s)
2044 unsigned long resplen,n;
2045 const unsigned char *p;
2047 n=s->method->ssl_get_message(s,
2048 SSL3_ST_CR_CERT_STATUS_A,
2049 SSL3_ST_CR_CERT_STATUS_B,
2050 SSL3_MT_CERTIFICATE_STATUS,
2054 if (!ok) return((int)n);
2057 /* need at least status type + length */
2058 al = SSL_AD_DECODE_ERROR;
2059 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2062 p = (unsigned char *)s->init_msg;
2063 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2065 al = SSL_AD_DECODE_ERROR;
2066 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2070 if (resplen + 4 != n)
2072 al = SSL_AD_DECODE_ERROR;
2073 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2076 if (s->tlsext_ocsp_resp)
2077 OPENSSL_free(s->tlsext_ocsp_resp);
2078 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2079 if (!s->tlsext_ocsp_resp)
2081 al = SSL_AD_INTERNAL_ERROR;
2082 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2085 s->tlsext_ocsp_resplen = resplen;
2086 if (s->ctx->tlsext_status_cb)
2089 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2092 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2093 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2098 al = SSL_AD_INTERNAL_ERROR;
2099 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2105 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2110 int ssl3_get_server_done(SSL *s)
2115 n=s->method->ssl_get_message(s,
2116 SSL3_ST_CR_SRVR_DONE_A,
2117 SSL3_ST_CR_SRVR_DONE_B,
2118 SSL3_MT_SERVER_DONE,
2119 30, /* should be very small, like 0 :-) */
2122 if (!ok) return((int)n);
2125 /* should contain no data */
2126 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2127 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2135 int ssl3_send_client_key_exchange(SSL *s)
2137 unsigned char *p,*d;
2139 unsigned long alg_k;
2140 #ifndef OPENSSL_NO_RSA
2142 EVP_PKEY *pkey=NULL;
2144 #ifndef OPENSSL_NO_KRB5
2146 #endif /* OPENSSL_NO_KRB5 */
2147 #ifndef OPENSSL_NO_ECDH
2148 EC_KEY *clnt_ecdh = NULL;
2149 const EC_POINT *srvr_ecpoint = NULL;
2150 EVP_PKEY *srvr_pub_pkey = NULL;
2151 unsigned char *encodedPoint = NULL;
2152 int encoded_pt_len = 0;
2153 BN_CTX * bn_ctx = NULL;
2156 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2158 d=(unsigned char *)s->init_buf->data;
2161 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2163 /* Fool emacs indentation */
2165 #ifndef OPENSSL_NO_RSA
2166 else if (alg_k & SSL_kRSA)
2169 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2171 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2172 rsa=s->session->sess_cert->peer_rsa_tmp;
2175 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2176 if ((pkey == NULL) ||
2177 (pkey->type != EVP_PKEY_RSA) ||
2178 (pkey->pkey.rsa == NULL))
2180 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2184 EVP_PKEY_free(pkey);
2187 tmp_buf[0]=s->client_version>>8;
2188 tmp_buf[1]=s->client_version&0xff;
2189 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2192 s->session->master_key_length=sizeof tmp_buf;
2195 /* Fix buf for TLS and beyond */
2196 if (s->version > SSL3_VERSION)
2198 n=RSA_public_encrypt(sizeof tmp_buf,
2199 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2201 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2202 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2206 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2210 /* Fix buf for TLS and beyond */
2211 if (s->version > SSL3_VERSION)
2217 s->session->master_key_length=
2218 s->method->ssl3_enc->generate_master_secret(s,
2219 s->session->master_key,
2220 tmp_buf,sizeof tmp_buf);
2221 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2224 #ifndef OPENSSL_NO_KRB5
2225 else if (alg_k & SSL_kKRB5)
2227 krb5_error_code krb5rc;
2228 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2229 /* krb5_data krb5_ap_req; */
2230 krb5_data *enc_ticket;
2231 krb5_data authenticator, *authp = NULL;
2232 EVP_CIPHER_CTX ciph_ctx;
2233 const EVP_CIPHER *enc = NULL;
2234 unsigned char iv[EVP_MAX_IV_LENGTH];
2235 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2236 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2237 + EVP_MAX_IV_LENGTH];
2238 int padl, outl = sizeof(epms);
2240 EVP_CIPHER_CTX_init(&ciph_ctx);
2243 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2245 #endif /* KSSL_DEBUG */
2249 if (KRB5SENDAUTH) authp = &authenticator;
2250 #endif /* KRB5SENDAUTH */
2252 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2254 enc = kssl_map_enc(kssl_ctx->enctype);
2259 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2260 if (krb5rc && kssl_err.text)
2261 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2263 #endif /* KSSL_DEBUG */
2267 ssl3_send_alert(s,SSL3_AL_FATAL,
2268 SSL_AD_HANDSHAKE_FAILURE);
2269 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2274 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2275 ** in place of RFC 2712 KerberosWrapper, as in:
2277 ** Send ticket (copy to *p, set n = length)
2278 ** n = krb5_ap_req.length;
2279 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2280 ** if (krb5_ap_req.data)
2281 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2283 ** Now using real RFC 2712 KerberosWrapper
2284 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2285 ** Note: 2712 "opaque" types are here replaced
2286 ** with a 2-byte length followed by the value.
2288 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2289 ** Where "xx xx" = length bytes. Shown here with
2290 ** optional authenticator omitted.
2293 /* KerberosWrapper.Ticket */
2294 s2n(enc_ticket->length,p);
2295 memcpy(p, enc_ticket->data, enc_ticket->length);
2296 p+= enc_ticket->length;
2297 n = enc_ticket->length + 2;
2299 /* KerberosWrapper.Authenticator */
2300 if (authp && authp->length)
2302 s2n(authp->length,p);
2303 memcpy(p, authp->data, authp->length);
2305 n+= authp->length + 2;
2313 s2n(0,p);/* null authenticator length */
2317 tmp_buf[0]=s->client_version>>8;
2318 tmp_buf[1]=s->client_version&0xff;
2319 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2322 /* 20010420 VRS. Tried it this way; failed.
2323 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2324 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2325 ** kssl_ctx->length);
2326 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2329 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2330 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2332 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2334 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2336 if (outl > (int)sizeof epms)
2338 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2341 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2343 /* KerberosWrapper.EncryptedPreMasterSecret */
2345 memcpy(p, epms, outl);
2349 s->session->master_key_length=
2350 s->method->ssl3_enc->generate_master_secret(s,
2351 s->session->master_key,
2352 tmp_buf, sizeof tmp_buf);
2354 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2355 OPENSSL_cleanse(epms, outl);
2358 #ifndef OPENSSL_NO_DH
2359 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2361 DH *dh_srvr,*dh_clnt;
2363 if (s->session->sess_cert == NULL)
2365 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2366 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2370 if (s->session->sess_cert->peer_dh_tmp != NULL)
2371 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2374 /* we get them from the cert */
2375 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2376 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2380 /* generate a new random key */
2381 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2383 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2386 if (!DH_generate_key(dh_clnt))
2388 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2392 /* use the 'p' output buffer for the DH key, but
2393 * make sure to clear it out afterwards */
2395 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2399 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2403 /* generate master key from the result */
2404 s->session->master_key_length=
2405 s->method->ssl3_enc->generate_master_secret(s,
2406 s->session->master_key,p,n);
2410 /* send off the data */
2411 n=BN_num_bytes(dh_clnt->pub_key);
2413 BN_bn2bin(dh_clnt->pub_key,p);
2418 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2422 #ifndef OPENSSL_NO_ECDH
2423 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2425 const EC_GROUP *srvr_group = NULL;
2427 int ecdh_clnt_cert = 0;
2430 /* Did we send out the client's
2431 * ECDH share for use in premaster
2432 * computation as part of client certificate?
2433 * If so, set ecdh_clnt_cert to 1.
2435 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2437 /* XXX: For now, we do not support client
2438 * authentication using ECDH certificates.
2439 * To add such support, one needs to add
2440 * code that checks for appropriate
2441 * conditions and sets ecdh_clnt_cert to 1.
2442 * For example, the cert have an ECC
2443 * key on the same curve as the server's
2444 * and the key should be authorized for
2447 * One also needs to add code in ssl3_connect
2448 * to skip sending the certificate verify
2451 * if ((s->cert->key->privatekey != NULL) &&
2452 * (s->cert->key->privatekey->type ==
2453 * EVP_PKEY_EC) && ...)
2454 * ecdh_clnt_cert = 1;
2458 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2460 tkey = s->session->sess_cert->peer_ecdh_tmp;
2464 /* Get the Server Public Key from Cert */
2465 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2466 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2467 if ((srvr_pub_pkey == NULL) ||
2468 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2469 (srvr_pub_pkey->pkey.ec == NULL))
2471 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2472 ERR_R_INTERNAL_ERROR);
2476 tkey = srvr_pub_pkey->pkey.ec;
2479 srvr_group = EC_KEY_get0_group(tkey);
2480 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2482 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2484 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2485 ERR_R_INTERNAL_ERROR);
2489 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2491 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2495 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2497 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2502 /* Reuse key info from our certificate
2503 * We only need our private key to perform
2504 * the ECDH computation.
2506 const BIGNUM *priv_key;
2507 tkey = s->cert->key->privatekey->pkey.ec;
2508 priv_key = EC_KEY_get0_private_key(tkey);
2509 if (priv_key == NULL)
2511 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2514 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2516 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2522 /* Generate a new ECDH key pair */
2523 if (!(EC_KEY_generate_key(clnt_ecdh)))
2525 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2530 /* use the 'p' output buffer for the ECDH key, but
2531 * make sure to clear it out afterwards
2534 field_size = EC_GROUP_get_degree(srvr_group);
2535 if (field_size <= 0)
2537 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2541 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2544 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2549 /* generate master key from the result */
2550 s->session->master_key_length = s->method->ssl3_enc \
2551 -> generate_master_secret(s,
2552 s->session->master_key,
2555 memset(p, 0, n); /* clean up */
2559 /* Send empty client key exch message */
2564 /* First check the size of encoding and
2565 * allocate memory accordingly.
2568 EC_POINT_point2oct(srvr_group,
2569 EC_KEY_get0_public_key(clnt_ecdh),
2570 POINT_CONVERSION_UNCOMPRESSED,
2573 encodedPoint = (unsigned char *)
2574 OPENSSL_malloc(encoded_pt_len *
2575 sizeof(unsigned char));
2576 bn_ctx = BN_CTX_new();
2577 if ((encodedPoint == NULL) ||
2580 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2584 /* Encode the public key */
2585 n = EC_POINT_point2oct(srvr_group,
2586 EC_KEY_get0_public_key(clnt_ecdh),
2587 POINT_CONVERSION_UNCOMPRESSED,
2588 encodedPoint, encoded_pt_len, bn_ctx);
2590 *p = n; /* length of encoded point */
2591 /* Encoded point will be copied here */
2593 /* copy the point */
2594 memcpy((unsigned char *)p, encodedPoint, n);
2595 /* increment n to account for length field */
2599 /* Free allocated memory */
2600 BN_CTX_free(bn_ctx);
2601 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2602 if (clnt_ecdh != NULL)
2603 EC_KEY_free(clnt_ecdh);
2604 EVP_PKEY_free(srvr_pub_pkey);
2606 #endif /* !OPENSSL_NO_ECDH */
2607 else if (alg_k & SSL_kGOST)
2609 /* GOST key exchange message creation */
2610 EVP_PKEY_CTX *pkey_ctx;
2613 unsigned int md_len;
2615 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2616 EVP_MD_CTX *ukm_hash;
2619 /* Get server sertificate PKEY and create ctx from it */
2620 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2622 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2624 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2628 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2629 /* If we have send a certificate, and certificate key
2631 * parameters match those of server certificate, use
2632 * certificate key for key exchange
2635 /* Otherwise, generate ephemeral key pair */
2637 EVP_PKEY_encrypt_init(pkey_ctx);
2638 /* Generate session key */
2639 RAND_bytes(premaster_secret,32);
2640 /* If we have client certificate, use its secret as peer key */
2641 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2642 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2643 /* If there was an error - just ignore it. Ephemeral key
2649 /* Compute shared IV and store it in algorithm-specific
2651 ukm_hash = EVP_MD_CTX_create();
2652 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2653 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2654 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2655 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2656 EVP_MD_CTX_destroy(ukm_hash);
2657 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2659 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2663 /* Make GOST keytransport blob message */
2664 /*Encapsulate it into sequence */
2665 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2667 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2668 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2675 *(p++)= msglen & 0xff;
2680 *(p++)= msglen & 0xff;
2683 memcpy(p, tmp, msglen);
2684 /* Check if pubkey from client certificate was used */
2685 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2687 /* Set flag "skip certificate verify" */
2688 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2690 EVP_PKEY_CTX_free(pkey_ctx);
2691 s->session->master_key_length=
2692 s->method->ssl3_enc->generate_master_secret(s,
2693 s->session->master_key,premaster_secret,32);
2694 EVP_PKEY_free(pub_key);
2697 #ifndef OPENSSL_NO_SRP
2698 else if (alg_k & SSL_kSRP)
2700 if (s->srp_ctx.A != NULL)
2702 /* send off the data */
2703 n=BN_num_bytes(s->srp_ctx.A);
2705 BN_bn2bin(s->srp_ctx.A,p);
2710 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2713 if (s->session->srp_username != NULL)
2714 OPENSSL_free(s->session->srp_username);
2715 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2716 if (s->session->srp_username == NULL)
2718 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2719 ERR_R_MALLOC_FAILURE);
2723 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2725 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2730 #ifndef OPENSSL_NO_PSK
2731 else if (alg_k & SSL_kPSK)
2733 char identity[PSK_MAX_IDENTITY_LEN];
2734 unsigned char *t = NULL;
2735 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2736 unsigned int pre_ms_len = 0, psk_len = 0;
2740 if (s->psk_client_callback == NULL)
2742 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2743 SSL_R_PSK_NO_CLIENT_CB);
2747 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2748 identity, PSK_MAX_IDENTITY_LEN,
2749 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2750 if (psk_len > PSK_MAX_PSK_LEN)
2752 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2753 ERR_R_INTERNAL_ERROR);
2756 else if (psk_len == 0)
2758 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2759 SSL_R_PSK_IDENTITY_NOT_FOUND);
2763 /* create PSK pre_master_secret */
2764 pre_ms_len = 2+psk_len+2+psk_len;
2766 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2768 memset(t, 0, psk_len);
2772 if (s->session->psk_identity_hint != NULL)
2773 OPENSSL_free(s->session->psk_identity_hint);
2774 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2775 if (s->ctx->psk_identity_hint != NULL &&
2776 s->session->psk_identity_hint == NULL)
2778 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2779 ERR_R_MALLOC_FAILURE);
2783 if (s->session->psk_identity != NULL)
2784 OPENSSL_free(s->session->psk_identity);
2785 s->session->psk_identity = BUF_strdup(identity);
2786 if (s->session->psk_identity == NULL)
2788 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2789 ERR_R_MALLOC_FAILURE);
2793 s->session->master_key_length =
2794 s->method->ssl3_enc->generate_master_secret(s,
2795 s->session->master_key,
2796 psk_or_pre_ms, pre_ms_len);
2797 n = strlen(identity);
2799 memcpy(p, identity, n);
2803 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2804 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2807 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2814 ssl3_send_alert(s, SSL3_AL_FATAL,
2815 SSL_AD_HANDSHAKE_FAILURE);
2816 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2817 ERR_R_INTERNAL_ERROR);
2821 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2824 s->state=SSL3_ST_CW_KEY_EXCH_B;
2825 /* number of bytes to write */
2830 /* SSL3_ST_CW_KEY_EXCH_B */
2831 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2833 #ifndef OPENSSL_NO_ECDH
2834 BN_CTX_free(bn_ctx);
2835 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2836 if (clnt_ecdh != NULL)
2837 EC_KEY_free(clnt_ecdh);
2838 EVP_PKEY_free(srvr_pub_pkey);
2843 int ssl3_send_client_verify(SSL *s)
2845 unsigned char *p,*d;
2846 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2848 EVP_PKEY_CTX *pctx=NULL;
2854 EVP_MD_CTX_init(&mctx);
2856 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2858 d=(unsigned char *)s->init_buf->data;
2860 pkey=s->cert->key->privatekey;
2861 /* Create context from key and test if sha1 is allowed as digest */
2862 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2863 EVP_PKEY_sign_init(pctx);
2864 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2866 if (s->version < TLS1_2_VERSION)
2867 s->method->ssl3_enc->cert_verify_mac(s,
2869 &(data[MD5_DIGEST_LENGTH]));
2875 /* For TLS v1.2 send signature algorithm and signature
2876 * using agreed digest and cached handshake records.
2878 if (s->version >= TLS1_2_VERSION)
2882 const EVP_MD *md = s->cert->key->digest;
2883 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2885 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2887 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2888 ERR_R_INTERNAL_ERROR);
2893 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2896 if (!EVP_SignInit_ex(&mctx, md, NULL)
2897 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2898 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2900 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2906 if (!ssl3_digest_cached_records(s))
2910 #ifndef OPENSSL_NO_RSA
2911 if (pkey->type == EVP_PKEY_RSA)
2913 s->method->ssl3_enc->cert_verify_mac(s,
2916 if (RSA_sign(NID_md5_sha1, data,
2917 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2918 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2920 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2928 #ifndef OPENSSL_NO_DSA
2929 if (pkey->type == EVP_PKEY_DSA)
2931 if (!DSA_sign(pkey->save_type,
2932 &(data[MD5_DIGEST_LENGTH]),
2933 SHA_DIGEST_LENGTH,&(p[2]),
2934 (unsigned int *)&j,pkey->pkey.dsa))
2936 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2944 #ifndef OPENSSL_NO_ECDSA
2945 if (pkey->type == EVP_PKEY_EC)
2947 if (!ECDSA_sign(pkey->save_type,
2948 &(data[MD5_DIGEST_LENGTH]),
2949 SHA_DIGEST_LENGTH,&(p[2]),
2950 (unsigned int *)&j,pkey->pkey.ec))
2952 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2961 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2963 unsigned char signbuf[64];
2966 s->method->ssl3_enc->cert_verify_mac(s,
2967 NID_id_GostR3411_94,
2969 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2970 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2971 ERR_R_INTERNAL_ERROR);
2974 for (i=63,j=0; i>=0; j++, i--) {
2982 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2985 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2988 s->state=SSL3_ST_CW_CERT_VRFY_B;
2989 s->init_num=(int)n+4;
2992 EVP_MD_CTX_cleanup(&mctx);
2993 EVP_PKEY_CTX_free(pctx);
2994 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2996 EVP_MD_CTX_cleanup(&mctx);
2997 EVP_PKEY_CTX_free(pctx);
3001 int ssl3_send_client_certificate(SSL *s)
3004 EVP_PKEY *pkey=NULL;
3008 if (s->state == SSL3_ST_CW_CERT_A)
3010 if ((s->cert == NULL) ||
3011 (s->cert->key->x509 == NULL) ||
3012 (s->cert->key->privatekey == NULL))
3013 s->state=SSL3_ST_CW_CERT_B;
3015 s->state=SSL3_ST_CW_CERT_C;
3018 /* We need to get a client cert */
3019 if (s->state == SSL3_ST_CW_CERT_B)
3021 /* If we get an error, we need to
3022 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3023 * We then get retied later */
3025 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3028 s->rwstate=SSL_X509_LOOKUP;
3031 s->rwstate=SSL_NOTHING;
3032 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3034 s->state=SSL3_ST_CW_CERT_B;
3035 if ( !SSL_use_certificate(s,x509) ||
3036 !SSL_use_PrivateKey(s,pkey))
3042 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3045 if (x509 != NULL) X509_free(x509);
3046 if (pkey != NULL) EVP_PKEY_free(pkey);
3049 if (s->version == SSL3_VERSION)
3051 s->s3->tmp.cert_req=0;
3052 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3057 s->s3->tmp.cert_req=2;
3061 /* Ok, we have a cert */
3062 s->state=SSL3_ST_CW_CERT_C;
3065 if (s->state == SSL3_ST_CW_CERT_C)
3067 s->state=SSL3_ST_CW_CERT_D;
3068 l=ssl3_output_cert_chain(s,
3069 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3073 /* SSL3_ST_CW_CERT_D */
3074 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3077 #define has_bits(i,m) (((i)&(m)) == (m))
3079 int ssl3_check_cert_and_algorithm(SSL *s)
3083 EVP_PKEY *pkey=NULL;
3085 #ifndef OPENSSL_NO_RSA
3088 #ifndef OPENSSL_NO_DH
3092 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3093 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3095 /* we don't have a certificate */
3096 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3099 sc=s->session->sess_cert;
3102 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3106 #ifndef OPENSSL_NO_RSA
3107 rsa=s->session->sess_cert->peer_rsa_tmp;
3109 #ifndef OPENSSL_NO_DH
3110 dh=s->session->sess_cert->peer_dh_tmp;
3113 /* This is the passed certificate */
3115 idx=sc->peer_cert_type;
3116 #ifndef OPENSSL_NO_ECDH
3117 if (idx == SSL_PKEY_ECC)
3119 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3121 { /* check failed */
3122 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3131 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3132 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3133 EVP_PKEY_free(pkey);
3136 /* Check that we have a certificate if we require one */
3137 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3139 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3142 #ifndef OPENSSL_NO_DSA
3143 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3145 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3149 #ifndef OPENSSL_NO_RSA
3150 if ((alg_k & SSL_kRSA) &&
3151 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3153 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3157 #ifndef OPENSSL_NO_DH
3158 if ((alg_k & SSL_kEDH) &&
3159 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3161 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3164 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3166 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3169 #ifndef OPENSSL_NO_DSA
3170 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3172 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3178 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3180 #ifndef OPENSSL_NO_RSA
3181 if (alg_k & SSL_kRSA)
3184 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3186 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3192 #ifndef OPENSSL_NO_DH
3193 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3196 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3198 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3205 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3211 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3216 /* Check to see if handshake is full or resumed. Usually this is just a
3217 * case of checking to see if a cache hit has occurred. In the case of
3218 * session tickets we have to check the next message to be sure.
3221 #ifndef OPENSSL_NO_TLSEXT
3222 int ssl3_check_finished(SSL *s)
3226 /* If we have no ticket it cannot be a resumed session. */
3227 if (!s->session->tlsext_tick)
3229 /* this function is called when we really expect a Certificate
3230 * message, so permit appropriate message length */
3231 n=s->method->ssl_get_message(s,
3237 if (!ok) return((int)n);
3238 s->s3->tmp.reuse_message = 1;
3239 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3240 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3247 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3250 #ifndef OPENSSL_NO_ENGINE
3251 if (s->ctx->client_cert_engine)
3253 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3254 SSL_get_client_CA_list(s),
3255 px509, ppkey, NULL, NULL, NULL);
3260 if (s->ctx->client_cert_cb)
3261 i = s->ctx->client_cert_cb(s,px509,ppkey);