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>
160 #include <openssl/fips.h>
162 #ifndef OPENSSL_NO_DH
163 #include <openssl/dh.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_ENGINE
167 #include <openssl/engine.h>
170 static const SSL_METHOD *ssl3_get_client_method(int ver);
171 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
173 static const SSL_METHOD *ssl3_get_client_method(int ver)
175 if (ver == SSL3_VERSION)
176 return(SSLv3_client_method());
181 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
182 ssl_undefined_function,
184 ssl3_get_client_method)
186 int ssl3_connect(SSL *s)
189 unsigned long Time=(unsigned long)time(NULL);
190 void (*cb)(const SSL *ssl,int type,int val)=NULL;
192 int new_state,state,skip=0;
194 RAND_add(&Time,sizeof(Time),0);
198 if (s->info_callback != NULL)
200 else if (s->ctx->info_callback != NULL)
201 cb=s->ctx->info_callback;
204 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
212 case SSL_ST_RENEGOTIATE:
214 s->state=SSL_ST_CONNECT;
215 s->ctx->stats.sess_connect_renegotiate++;
219 case SSL_ST_BEFORE|SSL_ST_CONNECT:
220 case SSL_ST_OK|SSL_ST_CONNECT:
223 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
225 if ((s->version & 0xff00 ) != 0x0300)
227 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
232 /* s->version=SSL3_VERSION; */
233 s->type=SSL_ST_CONNECT;
235 if (s->init_buf == NULL)
237 if ((buf=BUF_MEM_new()) == NULL)
242 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
251 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
253 /* setup buffing BIO */
254 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
256 /* don't push the buffering BIO quite yet */
258 ssl3_init_finished_mac(s);
260 s->state=SSL3_ST_CW_CLNT_HELLO_A;
261 s->ctx->stats.sess_connect++;
265 case SSL3_ST_CW_CLNT_HELLO_A:
266 case SSL3_ST_CW_CLNT_HELLO_B:
269 ret=ssl3_client_hello(s);
270 if (ret <= 0) goto end;
271 s->state=SSL3_ST_CR_SRVR_HELLO_A;
274 /* turn on buffering for the next lot of output */
275 if (s->bbio != s->wbio)
276 s->wbio=BIO_push(s->bbio,s->wbio);
280 case SSL3_ST_CR_SRVR_HELLO_A:
281 case SSL3_ST_CR_SRVR_HELLO_B:
282 ret=ssl3_get_server_hello(s);
283 #ifndef OPENSSL_NO_SRP
284 if (ret == 0 && s->s3->warn_alert == SSL_AD_MISSING_SRP_USERNAME)
286 if (!SRP_have_to_put_srp_username(s))
288 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_MISSING_SRP_USERNAME);
289 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_USER_CANCELLED);
292 s->state=SSL3_ST_CW_CLNT_HELLO_A;
293 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
297 if (ret <= 0) goto end;
300 s->state=SSL3_ST_CR_FINISHED_A;
302 s->state=SSL3_ST_CR_CERT_A;
306 case SSL3_ST_CR_CERT_A:
307 case SSL3_ST_CR_CERT_B:
308 #ifndef OPENSSL_NO_TLSEXT
309 ret=ssl3_check_finished(s);
310 if (ret <= 0) goto end;
314 if (s->tlsext_ticket_expected)
315 s->state=SSL3_ST_CR_SESSION_TICKET_A;
317 s->state=SSL3_ST_CR_FINISHED_A;
322 /* Check if it is anon DH/ECDH */
324 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
325 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
327 ret=ssl3_get_server_certificate(s);
328 if (ret <= 0) goto end;
329 #ifndef OPENSSL_NO_TLSEXT
330 if (s->tlsext_status_expected)
331 s->state=SSL3_ST_CR_CERT_STATUS_A;
333 s->state=SSL3_ST_CR_KEY_EXCH_A;
338 s->state=SSL3_ST_CR_KEY_EXCH_A;
345 s->state=SSL3_ST_CR_KEY_EXCH_A;
350 case SSL3_ST_CR_KEY_EXCH_A:
351 case SSL3_ST_CR_KEY_EXCH_B:
352 ret=ssl3_get_key_exchange(s);
353 if (ret <= 0) goto end;
354 s->state=SSL3_ST_CR_CERT_REQ_A;
357 /* at this point we check that we have the
358 * required stuff from the server */
359 if (!ssl3_check_cert_and_algorithm(s))
366 case SSL3_ST_CR_CERT_REQ_A:
367 case SSL3_ST_CR_CERT_REQ_B:
368 ret=ssl3_get_certificate_request(s);
369 if (ret <= 0) goto end;
370 s->state=SSL3_ST_CR_SRVR_DONE_A;
374 case SSL3_ST_CR_SRVR_DONE_A:
375 case SSL3_ST_CR_SRVR_DONE_B:
376 ret=ssl3_get_server_done(s);
377 if (ret <= 0) goto end;
378 #ifndef OPENSSL_NO_SRP
379 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP)
381 if ((ret = SRP_Calc_A_param(s))<=0)
383 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC);
384 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
389 if (s->s3->tmp.cert_req)
390 s->state=SSL3_ST_CW_CERT_A;
392 s->state=SSL3_ST_CW_KEY_EXCH_A;
397 case SSL3_ST_CW_CERT_A:
398 case SSL3_ST_CW_CERT_B:
399 case SSL3_ST_CW_CERT_C:
400 case SSL3_ST_CW_CERT_D:
401 ret=ssl3_send_client_certificate(s);
402 if (ret <= 0) goto end;
403 s->state=SSL3_ST_CW_KEY_EXCH_A;
407 case SSL3_ST_CW_KEY_EXCH_A:
408 case SSL3_ST_CW_KEY_EXCH_B:
409 ret=ssl3_send_client_key_exchange(s);
410 if (ret <= 0) goto end;
411 /* EAY EAY EAY need to check for DH fix cert
413 /* For TLS, cert_req is set to 2, so a cert chain
414 * of nothing is sent, but no verify packet is sent */
415 /* XXX: For now, we do not support client
416 * authentication in ECDH cipher suites with
417 * ECDH (rather than ECDSA) certificates.
418 * We need to skip the certificate verify
419 * message when client's ECDH public key is sent
420 * inside the client certificate.
422 if (s->s3->tmp.cert_req == 1)
424 s->state=SSL3_ST_CW_CERT_VRFY_A;
428 s->state=SSL3_ST_CW_CHANGE_A;
429 s->s3->change_cipher_spec=0;
431 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
433 s->state=SSL3_ST_CW_CHANGE_A;
434 s->s3->change_cipher_spec=0;
440 case SSL3_ST_CW_CERT_VRFY_A:
441 case SSL3_ST_CW_CERT_VRFY_B:
442 ret=ssl3_send_client_verify(s);
443 if (ret <= 0) goto end;
444 s->state=SSL3_ST_CW_CHANGE_A;
446 s->s3->change_cipher_spec=0;
449 case SSL3_ST_CW_CHANGE_A:
450 case SSL3_ST_CW_CHANGE_B:
451 ret=ssl3_send_change_cipher_spec(s,
452 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
453 if (ret <= 0) goto end;
454 s->state=SSL3_ST_CW_FINISHED_A;
457 s->session->cipher=s->s3->tmp.new_cipher;
458 #ifdef OPENSSL_NO_COMP
459 s->session->compress_meth=0;
461 if (s->s3->tmp.new_compression == NULL)
462 s->session->compress_meth=0;
464 s->session->compress_meth=
465 s->s3->tmp.new_compression->id;
467 if (!s->method->ssl3_enc->setup_key_block(s))
473 if (!s->method->ssl3_enc->change_cipher_state(s,
474 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
482 case SSL3_ST_CW_FINISHED_A:
483 case SSL3_ST_CW_FINISHED_B:
484 ret=ssl3_send_finished(s,
485 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
486 s->method->ssl3_enc->client_finished_label,
487 s->method->ssl3_enc->client_finished_label_len);
488 if (ret <= 0) goto end;
489 s->state=SSL3_ST_CW_FLUSH;
492 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
495 s->s3->tmp.next_state=SSL_ST_OK;
496 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
499 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
500 s->s3->delay_buf_pop_ret=0;
505 #ifndef OPENSSL_NO_TLSEXT
506 /* Allow NewSessionTicket if ticket expected */
507 if (s->tlsext_ticket_expected)
508 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
512 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
517 #ifndef OPENSSL_NO_TLSEXT
518 case SSL3_ST_CR_SESSION_TICKET_A:
519 case SSL3_ST_CR_SESSION_TICKET_B:
520 ret=ssl3_get_new_session_ticket(s);
521 if (ret <= 0) goto end;
522 s->state=SSL3_ST_CR_FINISHED_A;
526 case SSL3_ST_CR_CERT_STATUS_A:
527 case SSL3_ST_CR_CERT_STATUS_B:
528 ret=ssl3_get_cert_status(s);
529 if (ret <= 0) goto end;
530 s->state=SSL3_ST_CR_KEY_EXCH_A;
535 case SSL3_ST_CR_FINISHED_A:
536 case SSL3_ST_CR_FINISHED_B:
538 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
539 SSL3_ST_CR_FINISHED_B);
540 if (ret <= 0) goto end;
543 s->state=SSL3_ST_CW_CHANGE_A;
549 case SSL3_ST_CW_FLUSH:
550 s->rwstate=SSL_WRITING;
551 if (BIO_flush(s->wbio) <= 0)
556 s->rwstate=SSL_NOTHING;
557 s->state=s->s3->tmp.next_state;
561 /* clean a few things up */
562 ssl3_cleanup_key_block(s);
564 if (s->init_buf != NULL)
566 BUF_MEM_free(s->init_buf);
570 /* If we are not 'joining' the last two packets,
571 * remove the buffering now */
572 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
573 ssl_free_wbio_buffer(s);
574 /* else do it later in ssl3_write */
580 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
581 if (s->hit) s->ctx->stats.sess_hit++;
585 s->handshake_func=ssl3_connect;
586 s->ctx->stats.sess_connect_good++;
588 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
594 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
600 /* did we do anything */
601 if (!s->s3->tmp.reuse_message && !skip)
605 if ((ret=BIO_flush(s->wbio)) <= 0)
609 if ((cb != NULL) && (s->state != state))
613 cb(s,SSL_CB_CONNECT_LOOP,1);
624 cb(s,SSL_CB_CONNECT_EXIT,ret);
629 int ssl3_client_hello(SSL *s)
634 unsigned long Time,l;
635 #ifndef OPENSSL_NO_COMP
640 buf=(unsigned char *)s->init_buf->data;
641 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
643 SSL_SESSION *sess = s->session;
644 if ((sess == NULL) ||
645 (sess->ssl_version != s->version) ||
646 #ifdef OPENSSL_NO_TLSEXT
647 !sess->session_id_length ||
649 (!sess->session_id_length && !sess->tlsext_tick) ||
651 (sess->not_resumable))
653 if (!ssl_get_new_session(s,0))
656 /* else use the pre-loaded session */
658 p=s->s3->client_random;
659 Time=(unsigned long)time(NULL); /* Time */
661 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
664 /* Do the message type and length last */
667 *(p++)=s->version>>8;
668 *(p++)=s->version&0xff;
669 s->client_version=s->version;
672 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
679 i=s->session->session_id_length;
683 if (i > (int)sizeof(s->session->session_id))
685 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
688 memcpy(p,s->session->session_id,i);
692 /* Ciphers supported */
693 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
696 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
703 #ifdef OPENSSL_NO_COMP
707 if ((s->options & SSL_OP_NO_COMPRESSION)
708 || !s->ctx->comp_methods)
711 j=sk_SSL_COMP_num(s->ctx->comp_methods);
715 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
719 *(p++)=0; /* Add the NULL method */
721 #ifndef OPENSSL_NO_TLSEXT
723 if (ssl_prepare_clienthello_tlsext(s) <= 0)
725 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
728 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
730 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
737 *(d++)=SSL3_MT_CLIENT_HELLO;
740 s->state=SSL3_ST_CW_CLNT_HELLO_B;
741 /* number of bytes to write */
746 /* SSL3_ST_CW_CLNT_HELLO_B */
747 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
752 int ssl3_get_server_hello(SSL *s)
754 STACK_OF(SSL_CIPHER) *sk;
760 #ifndef OPENSSL_NO_COMP
764 n=s->method->ssl_get_message(s,
765 SSL3_ST_CR_SRVR_HELLO_A,
766 SSL3_ST_CR_SRVR_HELLO_B,
771 if (!ok) return((int)n);
773 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
775 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
777 if ( s->d1->send_cookie == 0)
779 s->s3->tmp.reuse_message = 1;
782 else /* already sent a cookie */
784 al=SSL_AD_UNEXPECTED_MESSAGE;
785 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
791 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
793 al=SSL_AD_UNEXPECTED_MESSAGE;
794 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
798 d=p=(unsigned char *)s->init_msg;
800 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
802 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
803 s->version=(s->version&0xff00)|p[1];
804 al=SSL_AD_PROTOCOL_VERSION;
809 /* load the server hello data */
810 /* load the server random */
811 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
814 /* get the session-id */
817 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
819 al=SSL_AD_ILLEGAL_PARAMETER;
820 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
824 #ifndef OPENSSL_NO_TLSEXT
825 /* check if we want to resume the session based on external pre-shared secret */
826 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
828 SSL_CIPHER *pref_cipher=NULL;
829 s->session->master_key_length=sizeof(s->session->master_key);
830 if (s->tls_session_secret_cb(s, s->session->master_key,
831 &s->session->master_key_length,
833 s->tls_session_secret_cb_arg))
835 s->session->cipher = pref_cipher ?
836 pref_cipher : ssl_get_cipher_by_char(s, p+j);
839 #endif /* OPENSSL_NO_TLSEXT */
841 if (j != 0 && j == s->session->session_id_length
842 && memcmp(p,s->session->session_id,j) == 0)
844 if(s->sid_ctx_length != s->session->sid_ctx_length
845 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
847 /* actually a client application bug */
848 al=SSL_AD_ILLEGAL_PARAMETER;
849 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
854 else /* a miss or crap from the other end */
856 /* If we were trying for session-id reuse, make a new
857 * SSL_SESSION so we don't stuff up other people */
859 if (s->session->session_id_length > 0)
861 if (!ssl_get_new_session(s,0))
863 al=SSL_AD_INTERNAL_ERROR;
867 s->session->session_id_length=j;
868 memcpy(s->session->session_id,p,j); /* j could be 0 */
871 c=ssl_get_cipher_by_char(s,p);
875 al=SSL_AD_ILLEGAL_PARAMETER;
876 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
879 p+=ssl_put_cipher_by_char(s,NULL,NULL);
881 sk=ssl_get_ciphers_by_id(s);
882 i=sk_SSL_CIPHER_find(sk,c);
885 /* we did not say we would use this cipher */
886 al=SSL_AD_ILLEGAL_PARAMETER;
887 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
891 /* Depending on the session caching (internal/external), the cipher
892 and/or cipher_id values may not be set. Make sure that
893 cipher_id is set and use it for comparison. */
894 if (s->session->cipher)
895 s->session->cipher_id = s->session->cipher->id;
896 if (s->hit && (s->session->cipher_id != c->id))
898 /* Workaround is now obsolete */
901 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
904 al=SSL_AD_ILLEGAL_PARAMETER;
905 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
909 s->s3->tmp.new_cipher=c;
910 /* Don't digest cached records if TLS v1.2: we may need them for
911 * client authentication.
913 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
915 /* lets get the compression algorithm */
917 #ifdef OPENSSL_NO_COMP
920 al=SSL_AD_ILLEGAL_PARAMETER;
921 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
924 /* If compression is disabled we'd better not try to resume a session
927 if (s->session->compress_meth != 0)
929 al=SSL_AD_INTERNAL_ERROR;
930 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
935 if (s->hit && j != s->session->compress_meth)
937 al=SSL_AD_ILLEGAL_PARAMETER;
938 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
943 else if (s->options & SSL_OP_NO_COMPRESSION)
945 al=SSL_AD_ILLEGAL_PARAMETER;
946 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
950 comp=ssl3_comp_find(s->ctx->comp_methods,j);
952 if ((j != 0) && (comp == NULL))
954 al=SSL_AD_ILLEGAL_PARAMETER;
955 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
960 s->s3->tmp.new_compression=comp;
964 #ifndef OPENSSL_NO_TLSEXT
966 if (s->version >= SSL3_VERSION)
968 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
970 /* 'al' set by ssl_parse_serverhello_tlsext */
971 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
974 if (ssl_check_serverhello_tlsext(s) <= 0)
976 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
984 /* wrong packet length */
985 al=SSL_AD_DECODE_ERROR;
986 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
992 ssl3_send_alert(s,SSL3_AL_FATAL,al);
997 int ssl3_get_server_certificate(SSL *s)
1000 unsigned long n,nc,llen,l;
1002 const unsigned char *q,*p;
1004 STACK_OF(X509) *sk=NULL;
1006 EVP_PKEY *pkey=NULL;
1007 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1009 n=s->method->ssl_get_message(s,
1016 if (!ok) return((int)n);
1018 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1019 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1020 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1022 s->s3->tmp.reuse_message=1;
1026 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1028 al=SSL_AD_UNEXPECTED_MESSAGE;
1029 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1032 p=d=(unsigned char *)s->init_msg;
1034 if ((sk=sk_X509_new_null()) == NULL)
1036 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1043 al=SSL_AD_DECODE_ERROR;
1044 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1047 for (nc=0; nc<llen; )
1050 if ((l+nc+3) > llen)
1052 al=SSL_AD_DECODE_ERROR;
1053 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1058 x=d2i_X509(NULL,&q,l);
1061 al=SSL_AD_BAD_CERTIFICATE;
1062 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1067 al=SSL_AD_DECODE_ERROR;
1068 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1071 if (!sk_X509_push(sk,x))
1073 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1081 i=ssl_verify_cert_chain(s,sk);
1082 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1083 #ifndef OPENSSL_NO_KRB5
1084 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1085 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1086 #endif /* OPENSSL_NO_KRB5 */
1089 al=ssl_verify_alarm_type(s->verify_result);
1090 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1093 ERR_clear_error(); /* but we keep s->verify_result */
1095 sc=ssl_sess_cert_new();
1096 if (sc == NULL) goto err;
1098 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1099 s->session->sess_cert=sc;
1102 /* Inconsistency alert: cert_chain does include the peer's
1103 * certificate, which we don't include in s3_srvr.c */
1104 x=sk_X509_value(sk,0);
1106 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1108 pkey=X509_get_pubkey(x);
1110 /* VRS: allow null cert if auth == KRB5 */
1111 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1112 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1116 printf("pkey,x = %p, %p\n", pkey,x);
1117 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1118 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1119 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1120 #endif /* KSSL_DEBUG */
1122 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1126 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1127 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1131 i=ssl_cert_type(x,pkey);
1132 if (need_cert && i < 0)
1136 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1137 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1143 sc->peer_cert_type=i;
1144 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1145 /* Why would the following ever happen?
1146 * We just created sc a couple of lines ago. */
1147 if (sc->peer_pkeys[i].x509 != NULL)
1148 X509_free(sc->peer_pkeys[i].x509);
1149 sc->peer_pkeys[i].x509=x;
1150 sc->peer_key= &(sc->peer_pkeys[i]);
1152 if (s->session->peer != NULL)
1153 X509_free(s->session->peer);
1154 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1159 sc->peer_cert_type=i;
1162 if (s->session->peer != NULL)
1163 X509_free(s->session->peer);
1164 s->session->peer=NULL;
1166 s->session->verify_result = s->verify_result;
1174 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1177 EVP_PKEY_free(pkey);
1179 sk_X509_pop_free(sk,X509_free);
1183 int ssl3_get_key_exchange(SSL *s)
1185 #ifndef OPENSSL_NO_RSA
1186 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1189 unsigned char *param,*p;
1190 int al,i,j,param_len,ok;
1192 EVP_PKEY *pkey=NULL;
1193 const EVP_MD *md = NULL;
1194 #ifndef OPENSSL_NO_RSA
1197 #ifndef OPENSSL_NO_DH
1200 #ifndef OPENSSL_NO_ECDH
1201 EC_KEY *ecdh = NULL;
1202 BN_CTX *bn_ctx = NULL;
1203 EC_POINT *srvr_ecpoint = NULL;
1205 int encoded_pt_len = 0;
1208 /* use same message size as in ssl3_get_certificate_request()
1209 * as ServerKeyExchange message may be skipped */
1210 n=s->method->ssl_get_message(s,
1211 SSL3_ST_CR_KEY_EXCH_A,
1212 SSL3_ST_CR_KEY_EXCH_B,
1216 if (!ok) return((int)n);
1218 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1220 #ifndef OPENSSL_NO_PSK
1221 /* In plain PSK ciphersuite, ServerKeyExchange can be
1222 omitted if no identity hint is sent. Set
1223 session->sess_cert anyway to avoid problems
1225 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1227 s->session->sess_cert=ssl_sess_cert_new();
1228 if (s->ctx->psk_identity_hint)
1229 OPENSSL_free(s->ctx->psk_identity_hint);
1230 s->ctx->psk_identity_hint = NULL;
1233 s->s3->tmp.reuse_message=1;
1237 param=p=(unsigned char *)s->init_msg;
1238 if (s->session->sess_cert != NULL)
1240 #ifndef OPENSSL_NO_RSA
1241 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1243 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1244 s->session->sess_cert->peer_rsa_tmp=NULL;
1247 #ifndef OPENSSL_NO_DH
1248 if (s->session->sess_cert->peer_dh_tmp)
1250 DH_free(s->session->sess_cert->peer_dh_tmp);
1251 s->session->sess_cert->peer_dh_tmp=NULL;
1254 #ifndef OPENSSL_NO_ECDH
1255 if (s->session->sess_cert->peer_ecdh_tmp)
1257 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1258 s->session->sess_cert->peer_ecdh_tmp=NULL;
1264 s->session->sess_cert=ssl_sess_cert_new();
1268 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1269 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1270 EVP_MD_CTX_init(&md_ctx);
1272 #ifndef OPENSSL_NO_PSK
1273 if (alg_k & SSL_kPSK)
1275 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1277 al=SSL_AD_HANDSHAKE_FAILURE;
1280 /* Store PSK identity hint for later use, hint is used
1281 * in ssl3_send_client_key_exchange. Assume that the
1282 * maximum length of a PSK identity hint can be as
1283 * long as the maximum length of a PSK identity. */
1284 if (i > PSK_MAX_IDENTITY_LEN)
1286 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1287 SSL_R_DATA_LENGTH_TOO_LONG);
1292 al=SSL_AD_DECODE_ERROR;
1293 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1294 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1297 /* If received PSK identity hint contains NULL
1298 * characters, the hint is truncated from the first
1299 * NULL. p may not be ending with NULL, so create a
1300 * NULL-terminated string. */
1301 memcpy(tmp_id_hint, p, i);
1302 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1303 if (s->ctx->psk_identity_hint != NULL)
1304 OPENSSL_free(s->ctx->psk_identity_hint);
1305 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1306 if (s->ctx->psk_identity_hint == NULL)
1308 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1316 #endif /* !OPENSSL_NO_PSK */
1317 #ifndef OPENSSL_NO_SRP
1318 if (alg_k & SSL_kSRP)
1324 al=SSL_AD_DECODE_ERROR;
1325 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1328 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1330 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1339 al=SSL_AD_DECODE_ERROR;
1340 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1343 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1350 i = (unsigned int)(p[0]);
1355 al=SSL_AD_DECODE_ERROR;
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1359 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1361 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1370 al=SSL_AD_DECODE_ERROR;
1371 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1374 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1376 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1382 /* We must check if there is a certificate */
1383 #ifndef OPENSSL_NO_RSA
1384 if (alg_a & SSL_aRSA)
1385 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1390 #ifndef OPENSSL_NO_DSA
1391 else if (alg_a & SSL_aDSS)
1392 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1396 #endif /* !OPENSSL_NO_SRP */
1397 #ifndef OPENSSL_NO_RSA
1398 if (alg_k & SSL_kRSA)
1400 if ((rsa=RSA_new()) == NULL)
1402 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1409 al=SSL_AD_DECODE_ERROR;
1410 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1413 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1415 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1424 al=SSL_AD_DECODE_ERROR;
1425 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1428 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1430 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1436 /* this should be because we are using an export cipher */
1437 if (alg_a & SSL_aRSA)
1438 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1444 s->session->sess_cert->peer_rsa_tmp=rsa;
1447 #else /* OPENSSL_NO_RSA */
1451 #ifndef OPENSSL_NO_DH
1452 else if (alg_k & SSL_kEDH)
1454 if ((dh=DH_new()) == NULL)
1456 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1463 al=SSL_AD_DECODE_ERROR;
1464 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1467 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1469 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1478 al=SSL_AD_DECODE_ERROR;
1479 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1482 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1484 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1493 al=SSL_AD_DECODE_ERROR;
1494 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1497 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1499 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1505 #ifndef OPENSSL_NO_RSA
1506 if (alg_a & SSL_aRSA)
1507 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1512 #ifndef OPENSSL_NO_DSA
1513 else if (alg_a & SSL_aDSS)
1514 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1516 /* else anonymous DH, so no certificate or pkey. */
1518 s->session->sess_cert->peer_dh_tmp=dh;
1521 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1523 al=SSL_AD_ILLEGAL_PARAMETER;
1524 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1527 #endif /* !OPENSSL_NO_DH */
1529 #ifndef OPENSSL_NO_ECDH
1530 else if (alg_k & SSL_kEECDH)
1533 const EC_GROUP *group;
1535 if ((ecdh=EC_KEY_new()) == NULL)
1537 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1541 /* Extract elliptic curve parameters and the
1542 * server's ephemeral ECDH public key.
1543 * Keep accumulating lengths of various components in
1544 * param_len and make sure it never exceeds n.
1547 /* XXX: For now we only support named (not generic) curves
1548 * and the ECParameters in this case is just three bytes.
1551 if ((param_len > n) ||
1552 (*p != NAMED_CURVE_TYPE) ||
1553 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1555 al=SSL_AD_INTERNAL_ERROR;
1556 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1560 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1563 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1566 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1568 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1571 EC_GROUP_free(ngroup);
1573 group = EC_KEY_get0_group(ecdh);
1575 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1576 (EC_GROUP_get_degree(group) > 163))
1578 al=SSL_AD_EXPORT_RESTRICTION;
1579 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1585 /* Next, get the encoded ECPoint */
1586 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1587 ((bn_ctx = BN_CTX_new()) == NULL))
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1593 encoded_pt_len = *p; /* length of encoded point */
1595 param_len += (1 + encoded_pt_len);
1596 if ((param_len > n) ||
1597 (EC_POINT_oct2point(group, srvr_ecpoint,
1598 p, encoded_pt_len, bn_ctx) == 0))
1600 al=SSL_AD_DECODE_ERROR;
1601 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1608 /* The ECC/TLS specification does not mention
1609 * the use of DSA to sign ECParameters in the server
1610 * key exchange message. We do support RSA and ECDSA.
1613 #ifndef OPENSSL_NO_RSA
1614 else if (alg_a & SSL_aRSA)
1615 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1617 #ifndef OPENSSL_NO_ECDSA
1618 else if (alg_a & SSL_aECDSA)
1619 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1621 /* else anonymous ECDH, so no certificate or pkey. */
1622 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1623 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1625 BN_CTX_free(bn_ctx);
1627 EC_POINT_free(srvr_ecpoint);
1628 srvr_ecpoint = NULL;
1632 al=SSL_AD_UNEXPECTED_MESSAGE;
1633 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1636 #endif /* !OPENSSL_NO_ECDH */
1639 /* p points to the next byte, there are 'n' bytes left */
1641 /* if it was signed, check the signature */
1644 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1646 int sigalg = tls12_get_sigid(pkey);
1647 /* Should never happen */
1650 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1653 /* Check key type is consistent with signature */
1654 if (sigalg != (int)p[1])
1656 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1657 al=SSL_AD_DECODE_ERROR;
1660 md = tls12_get_hash(p[0]);
1663 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1664 al=SSL_AD_DECODE_ERROR;
1668 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1678 j=EVP_PKEY_size(pkey);
1680 if ((i != n) || (n > j) || (n <= 0))
1682 /* wrong packet length */
1683 al=SSL_AD_DECODE_ERROR;
1684 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1688 #ifndef OPENSSL_NO_RSA
1689 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1695 for (num=2; num > 0; num--)
1697 EVP_MD_CTX_set_flags(&md_ctx,
1698 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1699 EVP_DigestInit_ex(&md_ctx,(num == 2)
1700 ?s->ctx->md5:s->ctx->sha1, NULL);
1701 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1702 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1703 EVP_DigestUpdate(&md_ctx,param,param_len);
1704 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1708 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1712 al=SSL_AD_DECRYPT_ERROR;
1713 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1719 al=SSL_AD_DECRYPT_ERROR;
1720 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1727 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1728 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1729 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1730 EVP_VerifyUpdate(&md_ctx,param,param_len);
1731 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1734 al=SSL_AD_DECRYPT_ERROR;
1735 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1742 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1743 /* aNULL or kPSK do not need public keys */
1745 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1748 /* still data left over */
1751 al=SSL_AD_DECODE_ERROR;
1752 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1756 EVP_PKEY_free(pkey);
1757 EVP_MD_CTX_cleanup(&md_ctx);
1760 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1762 EVP_PKEY_free(pkey);
1763 #ifndef OPENSSL_NO_RSA
1767 #ifndef OPENSSL_NO_DH
1771 #ifndef OPENSSL_NO_ECDH
1772 BN_CTX_free(bn_ctx);
1773 EC_POINT_free(srvr_ecpoint);
1777 EVP_MD_CTX_cleanup(&md_ctx);
1781 int ssl3_get_certificate_request(SSL *s)
1784 unsigned long n,nc,l;
1785 unsigned int llen, ctype_num,i;
1787 const unsigned char *p,*q;
1789 STACK_OF(X509_NAME) *ca_sk=NULL;
1791 n=s->method->ssl_get_message(s,
1792 SSL3_ST_CR_CERT_REQ_A,
1793 SSL3_ST_CR_CERT_REQ_B,
1798 if (!ok) return((int)n);
1800 s->s3->tmp.cert_req=0;
1802 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1804 s->s3->tmp.reuse_message=1;
1805 /* If we get here we don't need any cached handshake records
1806 * as we wont be doing client auth.
1808 if (s->s3->handshake_buffer)
1810 if (!ssl3_digest_cached_records(s))
1816 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1818 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1819 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1823 /* TLS does not like anon-DH with client cert */
1824 if (s->version > SSL3_VERSION)
1826 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1828 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1829 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1834 p=d=(unsigned char *)s->init_msg;
1836 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1838 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1842 /* get the certificate types */
1844 if (ctype_num > SSL3_CT_NUMBER)
1845 ctype_num=SSL3_CT_NUMBER;
1846 for (i=0; i<ctype_num; i++)
1847 s->s3->tmp.ctype[i]= p[i];
1849 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1852 /* Check we have enough room for signature algorithms and
1853 * following length value.
1855 if ((unsigned long)(p - d + llen + 2) > n)
1857 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1858 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1861 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1863 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1864 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1870 /* get the CA RDNs */
1875 out=fopen("/tmp/vsign.der","w");
1876 fwrite(p,1,llen,out);
1881 if ((unsigned long)(p - d + llen) != n)
1883 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1884 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1888 for (nc=0; nc<llen; )
1891 if ((l+nc+2) > llen)
1893 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1894 goto cont; /* netscape bugs */
1895 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1896 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1902 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1904 /* If netscape tolerance is on, ignore errors */
1905 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1909 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1910 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1917 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1918 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1921 if (!sk_X509_NAME_push(ca_sk,xn))
1923 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1937 /* we should setup a certificate to return.... */
1938 s->s3->tmp.cert_req=1;
1939 s->s3->tmp.ctype_num=ctype_num;
1940 if (s->s3->tmp.ca_names != NULL)
1941 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1942 s->s3->tmp.ca_names=ca_sk;
1947 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1951 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1953 return(X509_NAME_cmp(*a,*b));
1955 #ifndef OPENSSL_NO_TLSEXT
1956 int ssl3_get_new_session_ticket(SSL *s)
1958 int ok,al,ret=0, ticklen;
1960 const unsigned char *p;
1963 n=s->method->ssl_get_message(s,
1964 SSL3_ST_CR_SESSION_TICKET_A,
1965 SSL3_ST_CR_SESSION_TICKET_B,
1973 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1975 s->s3->tmp.reuse_message=1;
1978 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1980 al=SSL_AD_UNEXPECTED_MESSAGE;
1981 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1986 /* need at least ticket_lifetime_hint + ticket length */
1987 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1988 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1992 p=d=(unsigned char *)s->init_msg;
1993 n2l(p, s->session->tlsext_tick_lifetime_hint);
1995 /* ticket_lifetime_hint + ticket_length + ticket */
1996 if (ticklen + 6 != n)
1998 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1999 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2002 if (s->session->tlsext_tick)
2004 OPENSSL_free(s->session->tlsext_tick);
2005 s->session->tlsext_ticklen = 0;
2007 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2008 if (!s->session->tlsext_tick)
2010 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2013 memcpy(s->session->tlsext_tick, p, ticklen);
2014 s->session->tlsext_ticklen = ticklen;
2015 /* There are two ways to detect a resumed ticket sesion.
2016 * One is to set an appropriate session ID and then the server
2017 * must return a match in ServerHello. This allows the normal
2018 * client session ID matching to work and we know much
2019 * earlier that the ticket has been accepted.
2021 * The other way is to set zero length session ID when the
2022 * ticket is presented and rely on the handshake to determine
2023 * session resumption.
2025 * We choose the former approach because this fits in with
2026 * assumptions elsewhere in OpenSSL. The session ID is set
2027 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2030 EVP_Digest(p, ticklen,
2031 s->session->session_id, &s->session->session_id_length,
2032 #ifndef OPENSSL_NO_SHA256
2033 EVP_sha256(), NULL);
2040 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2045 int ssl3_get_cert_status(SSL *s)
2048 unsigned long resplen,n;
2049 const unsigned char *p;
2051 n=s->method->ssl_get_message(s,
2052 SSL3_ST_CR_CERT_STATUS_A,
2053 SSL3_ST_CR_CERT_STATUS_B,
2054 SSL3_MT_CERTIFICATE_STATUS,
2058 if (!ok) return((int)n);
2061 /* need at least status type + length */
2062 al = SSL_AD_DECODE_ERROR;
2063 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2066 p = (unsigned char *)s->init_msg;
2067 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2069 al = SSL_AD_DECODE_ERROR;
2070 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2074 if (resplen + 4 != n)
2076 al = SSL_AD_DECODE_ERROR;
2077 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2080 if (s->tlsext_ocsp_resp)
2081 OPENSSL_free(s->tlsext_ocsp_resp);
2082 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2083 if (!s->tlsext_ocsp_resp)
2085 al = SSL_AD_INTERNAL_ERROR;
2086 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2089 s->tlsext_ocsp_resplen = resplen;
2090 if (s->ctx->tlsext_status_cb)
2093 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2096 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2097 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2102 al = SSL_AD_INTERNAL_ERROR;
2103 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2109 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2114 int ssl3_get_server_done(SSL *s)
2119 n=s->method->ssl_get_message(s,
2120 SSL3_ST_CR_SRVR_DONE_A,
2121 SSL3_ST_CR_SRVR_DONE_B,
2122 SSL3_MT_SERVER_DONE,
2123 30, /* should be very small, like 0 :-) */
2126 if (!ok) return((int)n);
2129 /* should contain no data */
2130 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2131 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2139 int ssl3_send_client_key_exchange(SSL *s)
2141 unsigned char *p,*d;
2143 unsigned long alg_k;
2144 #ifndef OPENSSL_NO_RSA
2146 EVP_PKEY *pkey=NULL;
2148 #ifndef OPENSSL_NO_KRB5
2150 #endif /* OPENSSL_NO_KRB5 */
2151 #ifndef OPENSSL_NO_ECDH
2152 EC_KEY *clnt_ecdh = NULL;
2153 const EC_POINT *srvr_ecpoint = NULL;
2154 EVP_PKEY *srvr_pub_pkey = NULL;
2155 unsigned char *encodedPoint = NULL;
2156 int encoded_pt_len = 0;
2157 BN_CTX * bn_ctx = NULL;
2160 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2162 d=(unsigned char *)s->init_buf->data;
2165 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2167 /* Fool emacs indentation */
2169 #ifndef OPENSSL_NO_RSA
2170 else if (alg_k & SSL_kRSA)
2173 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2175 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2176 rsa=s->session->sess_cert->peer_rsa_tmp;
2179 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2180 if ((pkey == NULL) ||
2181 (pkey->type != EVP_PKEY_RSA) ||
2182 (pkey->pkey.rsa == NULL))
2184 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2188 EVP_PKEY_free(pkey);
2191 tmp_buf[0]=s->client_version>>8;
2192 tmp_buf[1]=s->client_version&0xff;
2193 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2196 s->session->master_key_length=sizeof tmp_buf;
2199 /* Fix buf for TLS and beyond */
2200 if (s->version > SSL3_VERSION)
2202 n=RSA_public_encrypt(sizeof tmp_buf,
2203 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2205 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2206 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2210 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2214 /* Fix buf for TLS and beyond */
2215 if (s->version > SSL3_VERSION)
2221 s->session->master_key_length=
2222 s->method->ssl3_enc->generate_master_secret(s,
2223 s->session->master_key,
2224 tmp_buf,sizeof tmp_buf);
2225 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2228 #ifndef OPENSSL_NO_KRB5
2229 else if (alg_k & SSL_kKRB5)
2231 krb5_error_code krb5rc;
2232 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2233 /* krb5_data krb5_ap_req; */
2234 krb5_data *enc_ticket;
2235 krb5_data authenticator, *authp = NULL;
2236 EVP_CIPHER_CTX ciph_ctx;
2237 const EVP_CIPHER *enc = NULL;
2238 unsigned char iv[EVP_MAX_IV_LENGTH];
2239 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2240 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2241 + EVP_MAX_IV_LENGTH];
2242 int padl, outl = sizeof(epms);
2244 EVP_CIPHER_CTX_init(&ciph_ctx);
2247 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2249 #endif /* KSSL_DEBUG */
2253 if (KRB5SENDAUTH) authp = &authenticator;
2254 #endif /* KRB5SENDAUTH */
2256 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2258 enc = kssl_map_enc(kssl_ctx->enctype);
2263 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2264 if (krb5rc && kssl_err.text)
2265 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2267 #endif /* KSSL_DEBUG */
2271 ssl3_send_alert(s,SSL3_AL_FATAL,
2272 SSL_AD_HANDSHAKE_FAILURE);
2273 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2278 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2279 ** in place of RFC 2712 KerberosWrapper, as in:
2281 ** Send ticket (copy to *p, set n = length)
2282 ** n = krb5_ap_req.length;
2283 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2284 ** if (krb5_ap_req.data)
2285 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2287 ** Now using real RFC 2712 KerberosWrapper
2288 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2289 ** Note: 2712 "opaque" types are here replaced
2290 ** with a 2-byte length followed by the value.
2292 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2293 ** Where "xx xx" = length bytes. Shown here with
2294 ** optional authenticator omitted.
2297 /* KerberosWrapper.Ticket */
2298 s2n(enc_ticket->length,p);
2299 memcpy(p, enc_ticket->data, enc_ticket->length);
2300 p+= enc_ticket->length;
2301 n = enc_ticket->length + 2;
2303 /* KerberosWrapper.Authenticator */
2304 if (authp && authp->length)
2306 s2n(authp->length,p);
2307 memcpy(p, authp->data, authp->length);
2309 n+= authp->length + 2;
2317 s2n(0,p);/* null authenticator length */
2321 tmp_buf[0]=s->client_version>>8;
2322 tmp_buf[1]=s->client_version&0xff;
2323 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2326 /* 20010420 VRS. Tried it this way; failed.
2327 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2328 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2329 ** kssl_ctx->length);
2330 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2333 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2334 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2336 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2338 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2340 if (outl > (int)sizeof epms)
2342 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2345 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2347 /* KerberosWrapper.EncryptedPreMasterSecret */
2349 memcpy(p, epms, outl);
2353 s->session->master_key_length=
2354 s->method->ssl3_enc->generate_master_secret(s,
2355 s->session->master_key,
2356 tmp_buf, sizeof tmp_buf);
2358 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2359 OPENSSL_cleanse(epms, outl);
2362 #ifndef OPENSSL_NO_DH
2363 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2365 DH *dh_srvr,*dh_clnt;
2367 if (s->session->sess_cert == NULL)
2369 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2370 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2374 if (s->session->sess_cert->peer_dh_tmp != NULL)
2375 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2378 /* we get them from the cert */
2379 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2380 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2384 /* generate a new random key */
2385 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2387 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2390 if (!DH_generate_key(dh_clnt))
2392 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2397 /* use the 'p' output buffer for the DH key, but
2398 * make sure to clear it out afterwards */
2400 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2404 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2409 /* generate master key from the result */
2410 s->session->master_key_length=
2411 s->method->ssl3_enc->generate_master_secret(s,
2412 s->session->master_key,p,n);
2416 /* send off the data */
2417 n=BN_num_bytes(dh_clnt->pub_key);
2419 BN_bn2bin(dh_clnt->pub_key,p);
2424 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2428 #ifndef OPENSSL_NO_ECDH
2429 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2431 const EC_GROUP *srvr_group = NULL;
2433 int ecdh_clnt_cert = 0;
2436 /* Did we send out the client's
2437 * ECDH share for use in premaster
2438 * computation as part of client certificate?
2439 * If so, set ecdh_clnt_cert to 1.
2441 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2443 /* XXX: For now, we do not support client
2444 * authentication using ECDH certificates.
2445 * To add such support, one needs to add
2446 * code that checks for appropriate
2447 * conditions and sets ecdh_clnt_cert to 1.
2448 * For example, the cert have an ECC
2449 * key on the same curve as the server's
2450 * and the key should be authorized for
2453 * One also needs to add code in ssl3_connect
2454 * to skip sending the certificate verify
2457 * if ((s->cert->key->privatekey != NULL) &&
2458 * (s->cert->key->privatekey->type ==
2459 * EVP_PKEY_EC) && ...)
2460 * ecdh_clnt_cert = 1;
2464 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2466 tkey = s->session->sess_cert->peer_ecdh_tmp;
2470 /* Get the Server Public Key from Cert */
2471 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2472 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2473 if ((srvr_pub_pkey == NULL) ||
2474 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2475 (srvr_pub_pkey->pkey.ec == NULL))
2477 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2478 ERR_R_INTERNAL_ERROR);
2482 tkey = srvr_pub_pkey->pkey.ec;
2485 srvr_group = EC_KEY_get0_group(tkey);
2486 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2488 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2490 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2491 ERR_R_INTERNAL_ERROR);
2495 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2497 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2501 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2503 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2508 /* Reuse key info from our certificate
2509 * We only need our private key to perform
2510 * the ECDH computation.
2512 const BIGNUM *priv_key;
2513 tkey = s->cert->key->privatekey->pkey.ec;
2514 priv_key = EC_KEY_get0_private_key(tkey);
2515 if (priv_key == NULL)
2517 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2520 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2522 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2528 /* Generate a new ECDH key pair */
2529 if (!(EC_KEY_generate_key(clnt_ecdh)))
2531 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2536 /* use the 'p' output buffer for the ECDH key, but
2537 * make sure to clear it out afterwards
2540 field_size = EC_GROUP_get_degree(srvr_group);
2541 if (field_size <= 0)
2543 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2547 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2550 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2555 /* generate master key from the result */
2556 s->session->master_key_length = s->method->ssl3_enc \
2557 -> generate_master_secret(s,
2558 s->session->master_key,
2561 memset(p, 0, n); /* clean up */
2565 /* Send empty client key exch message */
2570 /* First check the size of encoding and
2571 * allocate memory accordingly.
2574 EC_POINT_point2oct(srvr_group,
2575 EC_KEY_get0_public_key(clnt_ecdh),
2576 POINT_CONVERSION_UNCOMPRESSED,
2579 encodedPoint = (unsigned char *)
2580 OPENSSL_malloc(encoded_pt_len *
2581 sizeof(unsigned char));
2582 bn_ctx = BN_CTX_new();
2583 if ((encodedPoint == NULL) ||
2586 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2590 /* Encode the public key */
2591 n = EC_POINT_point2oct(srvr_group,
2592 EC_KEY_get0_public_key(clnt_ecdh),
2593 POINT_CONVERSION_UNCOMPRESSED,
2594 encodedPoint, encoded_pt_len, bn_ctx);
2596 *p = n; /* length of encoded point */
2597 /* Encoded point will be copied here */
2599 /* copy the point */
2600 memcpy((unsigned char *)p, encodedPoint, n);
2601 /* increment n to account for length field */
2605 /* Free allocated memory */
2606 BN_CTX_free(bn_ctx);
2607 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2608 if (clnt_ecdh != NULL)
2609 EC_KEY_free(clnt_ecdh);
2610 EVP_PKEY_free(srvr_pub_pkey);
2612 #endif /* !OPENSSL_NO_ECDH */
2613 else if (alg_k & SSL_kGOST)
2615 /* GOST key exchange message creation */
2616 EVP_PKEY_CTX *pkey_ctx;
2619 unsigned int md_len;
2621 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2622 EVP_MD_CTX *ukm_hash;
2625 /* Get server sertificate PKEY and create ctx from it */
2626 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2628 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2630 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2634 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2635 /* If we have send a certificate, and certificate key
2637 * parameters match those of server certificate, use
2638 * certificate key for key exchange
2641 /* Otherwise, generate ephemeral key pair */
2643 EVP_PKEY_encrypt_init(pkey_ctx);
2644 /* Generate session key */
2645 RAND_bytes(premaster_secret,32);
2646 /* If we have client certificate, use its secret as peer key */
2647 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2648 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2649 /* If there was an error - just ignore it. Ephemeral key
2655 /* Compute shared IV and store it in algorithm-specific
2657 ukm_hash = EVP_MD_CTX_create();
2658 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2659 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2660 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2661 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2662 EVP_MD_CTX_destroy(ukm_hash);
2663 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2665 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2669 /* Make GOST keytransport blob message */
2670 /*Encapsulate it into sequence */
2671 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2673 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2674 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2681 *(p++)= msglen & 0xff;
2686 *(p++)= msglen & 0xff;
2689 memcpy(p, tmp, msglen);
2690 /* Check if pubkey from client certificate was used */
2691 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2693 /* Set flag "skip certificate verify" */
2694 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2696 EVP_PKEY_CTX_free(pkey_ctx);
2697 s->session->master_key_length=
2698 s->method->ssl3_enc->generate_master_secret(s,
2699 s->session->master_key,premaster_secret,32);
2700 EVP_PKEY_free(pub_key);
2703 #ifndef OPENSSL_NO_SRP
2704 else if (alg_k & SSL_kSRP)
2706 if (s->srp_ctx.A != NULL)
2708 /* send off the data */
2709 n=BN_num_bytes(s->srp_ctx.A);
2711 BN_bn2bin(s->srp_ctx.A,p);
2716 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2719 if (s->session->srp_username != NULL)
2720 OPENSSL_free(s->session->srp_username);
2721 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2722 if (s->session->srp_username == NULL)
2724 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2725 ERR_R_MALLOC_FAILURE);
2729 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2731 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2736 #ifndef OPENSSL_NO_PSK
2737 else if (alg_k & SSL_kPSK)
2739 char identity[PSK_MAX_IDENTITY_LEN];
2740 unsigned char *t = NULL;
2741 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2742 unsigned int pre_ms_len = 0, psk_len = 0;
2746 if (s->psk_client_callback == NULL)
2748 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2749 SSL_R_PSK_NO_CLIENT_CB);
2753 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2754 identity, PSK_MAX_IDENTITY_LEN,
2755 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2756 if (psk_len > PSK_MAX_PSK_LEN)
2758 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2759 ERR_R_INTERNAL_ERROR);
2762 else if (psk_len == 0)
2764 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2765 SSL_R_PSK_IDENTITY_NOT_FOUND);
2769 /* create PSK pre_master_secret */
2770 pre_ms_len = 2+psk_len+2+psk_len;
2772 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2774 memset(t, 0, psk_len);
2778 if (s->session->psk_identity_hint != NULL)
2779 OPENSSL_free(s->session->psk_identity_hint);
2780 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2781 if (s->ctx->psk_identity_hint != NULL &&
2782 s->session->psk_identity_hint == NULL)
2784 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2785 ERR_R_MALLOC_FAILURE);
2789 if (s->session->psk_identity != NULL)
2790 OPENSSL_free(s->session->psk_identity);
2791 s->session->psk_identity = BUF_strdup(identity);
2792 if (s->session->psk_identity == NULL)
2794 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2795 ERR_R_MALLOC_FAILURE);
2799 s->session->master_key_length =
2800 s->method->ssl3_enc->generate_master_secret(s,
2801 s->session->master_key,
2802 psk_or_pre_ms, pre_ms_len);
2803 n = strlen(identity);
2805 memcpy(p, identity, n);
2809 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2810 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2813 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2820 ssl3_send_alert(s, SSL3_AL_FATAL,
2821 SSL_AD_HANDSHAKE_FAILURE);
2822 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2823 ERR_R_INTERNAL_ERROR);
2827 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2830 s->state=SSL3_ST_CW_KEY_EXCH_B;
2831 /* number of bytes to write */
2836 /* SSL3_ST_CW_KEY_EXCH_B */
2837 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2839 #ifndef OPENSSL_NO_ECDH
2840 BN_CTX_free(bn_ctx);
2841 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2842 if (clnt_ecdh != NULL)
2843 EC_KEY_free(clnt_ecdh);
2844 EVP_PKEY_free(srvr_pub_pkey);
2849 int ssl3_send_client_verify(SSL *s)
2851 unsigned char *p,*d;
2852 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2854 EVP_PKEY_CTX *pctx=NULL;
2860 EVP_MD_CTX_init(&mctx);
2862 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2864 d=(unsigned char *)s->init_buf->data;
2866 pkey=s->cert->key->privatekey;
2867 /* Create context from key and test if sha1 is allowed as digest */
2868 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2869 EVP_PKEY_sign_init(pctx);
2870 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2872 if (TLS1_get_version(s) < TLS1_2_VERSION)
2873 s->method->ssl3_enc->cert_verify_mac(s,
2875 &(data[MD5_DIGEST_LENGTH]));
2881 /* For TLS v1.2 send signature algorithm and signature
2882 * using agreed digest and cached handshake records.
2884 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2888 const EVP_MD *md = s->cert->key->digest;
2889 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2891 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2893 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2894 ERR_R_INTERNAL_ERROR);
2899 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2902 if (!EVP_SignInit_ex(&mctx, md, NULL)
2903 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2904 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2906 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2912 if (!ssl3_digest_cached_records(s))
2916 #ifndef OPENSSL_NO_RSA
2917 if (pkey->type == EVP_PKEY_RSA)
2919 s->method->ssl3_enc->cert_verify_mac(s,
2922 if (RSA_sign(NID_md5_sha1, data,
2923 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2924 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2926 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2934 #ifndef OPENSSL_NO_DSA
2935 if (pkey->type == EVP_PKEY_DSA)
2937 if (!DSA_sign(pkey->save_type,
2938 &(data[MD5_DIGEST_LENGTH]),
2939 SHA_DIGEST_LENGTH,&(p[2]),
2940 (unsigned int *)&j,pkey->pkey.dsa))
2942 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2950 #ifndef OPENSSL_NO_ECDSA
2951 if (pkey->type == EVP_PKEY_EC)
2953 if (!ECDSA_sign(pkey->save_type,
2954 &(data[MD5_DIGEST_LENGTH]),
2955 SHA_DIGEST_LENGTH,&(p[2]),
2956 (unsigned int *)&j,pkey->pkey.ec))
2958 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2967 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2969 unsigned char signbuf[64];
2972 s->method->ssl3_enc->cert_verify_mac(s,
2973 NID_id_GostR3411_94,
2975 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2976 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2977 ERR_R_INTERNAL_ERROR);
2980 for (i=63,j=0; i>=0; j++, i--) {
2988 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2991 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2994 s->state=SSL3_ST_CW_CERT_VRFY_B;
2995 s->init_num=(int)n+4;
2998 EVP_MD_CTX_cleanup(&mctx);
2999 EVP_PKEY_CTX_free(pctx);
3000 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3002 EVP_MD_CTX_cleanup(&mctx);
3003 EVP_PKEY_CTX_free(pctx);
3007 int ssl3_send_client_certificate(SSL *s)
3010 EVP_PKEY *pkey=NULL;
3014 if (s->state == SSL3_ST_CW_CERT_A)
3016 if ((s->cert == NULL) ||
3017 (s->cert->key->x509 == NULL) ||
3018 (s->cert->key->privatekey == NULL))
3019 s->state=SSL3_ST_CW_CERT_B;
3021 s->state=SSL3_ST_CW_CERT_C;
3024 /* We need to get a client cert */
3025 if (s->state == SSL3_ST_CW_CERT_B)
3027 /* If we get an error, we need to
3028 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3029 * We then get retied later */
3031 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3034 s->rwstate=SSL_X509_LOOKUP;
3037 s->rwstate=SSL_NOTHING;
3038 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3040 s->state=SSL3_ST_CW_CERT_B;
3041 if ( !SSL_use_certificate(s,x509) ||
3042 !SSL_use_PrivateKey(s,pkey))
3048 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3051 if (x509 != NULL) X509_free(x509);
3052 if (pkey != NULL) EVP_PKEY_free(pkey);
3055 if (s->version == SSL3_VERSION)
3057 s->s3->tmp.cert_req=0;
3058 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3063 s->s3->tmp.cert_req=2;
3067 /* Ok, we have a cert */
3068 s->state=SSL3_ST_CW_CERT_C;
3071 if (s->state == SSL3_ST_CW_CERT_C)
3073 s->state=SSL3_ST_CW_CERT_D;
3074 l=ssl3_output_cert_chain(s,
3075 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3079 /* SSL3_ST_CW_CERT_D */
3080 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3083 #define has_bits(i,m) (((i)&(m)) == (m))
3085 int ssl3_check_cert_and_algorithm(SSL *s)
3089 EVP_PKEY *pkey=NULL;
3091 #ifndef OPENSSL_NO_RSA
3094 #ifndef OPENSSL_NO_DH
3098 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3099 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3101 /* we don't have a certificate */
3102 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3105 sc=s->session->sess_cert;
3108 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3112 #ifndef OPENSSL_NO_RSA
3113 rsa=s->session->sess_cert->peer_rsa_tmp;
3115 #ifndef OPENSSL_NO_DH
3116 dh=s->session->sess_cert->peer_dh_tmp;
3119 /* This is the passed certificate */
3121 idx=sc->peer_cert_type;
3122 #ifndef OPENSSL_NO_ECDH
3123 if (idx == SSL_PKEY_ECC)
3125 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3127 { /* check failed */
3128 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3137 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3138 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3139 EVP_PKEY_free(pkey);
3142 /* Check that we have a certificate if we require one */
3143 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3145 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3148 #ifndef OPENSSL_NO_DSA
3149 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3151 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3155 #ifndef OPENSSL_NO_RSA
3156 if ((alg_k & SSL_kRSA) &&
3157 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3159 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3163 #ifndef OPENSSL_NO_DH
3164 if ((alg_k & SSL_kEDH) &&
3165 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3167 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3170 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3172 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3175 #ifndef OPENSSL_NO_DSA
3176 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3178 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3184 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3186 #ifndef OPENSSL_NO_RSA
3187 if (alg_k & SSL_kRSA)
3190 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3192 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3198 #ifndef OPENSSL_NO_DH
3199 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3202 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3204 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3211 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3217 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3222 /* Check to see if handshake is full or resumed. Usually this is just a
3223 * case of checking to see if a cache hit has occurred. In the case of
3224 * session tickets we have to check the next message to be sure.
3227 #ifndef OPENSSL_NO_TLSEXT
3228 int ssl3_check_finished(SSL *s)
3232 /* If we have no ticket it cannot be a resumed session. */
3233 if (!s->session->tlsext_tick)
3235 /* this function is called when we really expect a Certificate
3236 * message, so permit appropriate message length */
3237 n=s->method->ssl_get_message(s,
3243 if (!ok) return((int)n);
3244 s->s3->tmp.reuse_message = 1;
3245 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3246 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3253 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3256 #ifndef OPENSSL_NO_ENGINE
3257 if (s->ctx->client_cert_engine)
3259 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3260 SSL_get_client_CA_list(s),
3261 px509, ppkey, NULL, NULL, NULL);
3266 if (s->ctx->client_cert_cb)
3267 i = s->ctx->client_cert_cb(s,px509,ppkey);