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 /* TLS v1.2 only ciphersuites require v1.2 or later */
880 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
881 (TLS1_get_version(s) < TLS1_2_VERSION))
883 al=SSL_AD_ILLEGAL_PARAMETER;
884 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
887 p+=ssl_put_cipher_by_char(s,NULL,NULL);
889 sk=ssl_get_ciphers_by_id(s);
890 i=sk_SSL_CIPHER_find(sk,c);
893 /* we did not say we would use this cipher */
894 al=SSL_AD_ILLEGAL_PARAMETER;
895 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
899 /* Depending on the session caching (internal/external), the cipher
900 and/or cipher_id values may not be set. Make sure that
901 cipher_id is set and use it for comparison. */
902 if (s->session->cipher)
903 s->session->cipher_id = s->session->cipher->id;
904 if (s->hit && (s->session->cipher_id != c->id))
906 /* Workaround is now obsolete */
909 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
912 al=SSL_AD_ILLEGAL_PARAMETER;
913 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
917 s->s3->tmp.new_cipher=c;
918 /* Don't digest cached records if TLS v1.2: we may need them for
919 * client authentication.
921 if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s))
923 /* lets get the compression algorithm */
925 #ifdef OPENSSL_NO_COMP
928 al=SSL_AD_ILLEGAL_PARAMETER;
929 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
932 /* If compression is disabled we'd better not try to resume a session
935 if (s->session->compress_meth != 0)
937 al=SSL_AD_INTERNAL_ERROR;
938 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION);
943 if (s->hit && j != s->session->compress_meth)
945 al=SSL_AD_ILLEGAL_PARAMETER;
946 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED);
951 else if (s->options & SSL_OP_NO_COMPRESSION)
953 al=SSL_AD_ILLEGAL_PARAMETER;
954 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED);
958 comp=ssl3_comp_find(s->ctx->comp_methods,j);
960 if ((j != 0) && (comp == NULL))
962 al=SSL_AD_ILLEGAL_PARAMETER;
963 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
968 s->s3->tmp.new_compression=comp;
972 #ifndef OPENSSL_NO_TLSEXT
974 if (s->version >= SSL3_VERSION)
976 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
978 /* 'al' set by ssl_parse_serverhello_tlsext */
979 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
982 if (ssl_check_serverhello_tlsext(s) <= 0)
984 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
992 /* wrong packet length */
993 al=SSL_AD_DECODE_ERROR;
994 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
1000 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1005 int ssl3_get_server_certificate(SSL *s)
1007 int al,i,ok,ret= -1;
1008 unsigned long n,nc,llen,l;
1010 const unsigned char *q,*p;
1012 STACK_OF(X509) *sk=NULL;
1014 EVP_PKEY *pkey=NULL;
1015 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
1017 n=s->method->ssl_get_message(s,
1024 if (!ok) return((int)n);
1026 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
1027 ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) &&
1028 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
1030 s->s3->tmp.reuse_message=1;
1034 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
1036 al=SSL_AD_UNEXPECTED_MESSAGE;
1037 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
1040 p=d=(unsigned char *)s->init_msg;
1042 if ((sk=sk_X509_new_null()) == NULL)
1044 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1051 al=SSL_AD_DECODE_ERROR;
1052 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
1055 for (nc=0; nc<llen; )
1058 if ((l+nc+3) > llen)
1060 al=SSL_AD_DECODE_ERROR;
1061 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1066 x=d2i_X509(NULL,&q,l);
1069 al=SSL_AD_BAD_CERTIFICATE;
1070 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1075 al=SSL_AD_DECODE_ERROR;
1076 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1079 if (!sk_X509_push(sk,x))
1081 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1089 i=ssl_verify_cert_chain(s,sk);
1090 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1091 #ifndef OPENSSL_NO_KRB5
1092 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1093 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1094 #endif /* OPENSSL_NO_KRB5 */
1097 al=ssl_verify_alarm_type(s->verify_result);
1098 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1101 ERR_clear_error(); /* but we keep s->verify_result */
1103 sc=ssl_sess_cert_new();
1104 if (sc == NULL) goto err;
1106 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1107 s->session->sess_cert=sc;
1110 /* Inconsistency alert: cert_chain does include the peer's
1111 * certificate, which we don't include in s3_srvr.c */
1112 x=sk_X509_value(sk,0);
1114 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1116 pkey=X509_get_pubkey(x);
1118 /* VRS: allow null cert if auth == KRB5 */
1119 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1120 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1124 printf("pkey,x = %p, %p\n", pkey,x);
1125 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1126 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1127 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1128 #endif /* KSSL_DEBUG */
1130 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1134 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1135 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1139 i=ssl_cert_type(x,pkey);
1140 if (need_cert && i < 0)
1144 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1145 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1151 sc->peer_cert_type=i;
1152 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1153 /* Why would the following ever happen?
1154 * We just created sc a couple of lines ago. */
1155 if (sc->peer_pkeys[i].x509 != NULL)
1156 X509_free(sc->peer_pkeys[i].x509);
1157 sc->peer_pkeys[i].x509=x;
1158 sc->peer_key= &(sc->peer_pkeys[i]);
1160 if (s->session->peer != NULL)
1161 X509_free(s->session->peer);
1162 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1167 sc->peer_cert_type=i;
1170 if (s->session->peer != NULL)
1171 X509_free(s->session->peer);
1172 s->session->peer=NULL;
1174 s->session->verify_result = s->verify_result;
1182 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1185 EVP_PKEY_free(pkey);
1187 sk_X509_pop_free(sk,X509_free);
1191 int ssl3_get_key_exchange(SSL *s)
1193 #ifndef OPENSSL_NO_RSA
1194 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1197 unsigned char *param,*p;
1198 int al,i,j,param_len,ok;
1200 EVP_PKEY *pkey=NULL;
1201 const EVP_MD *md = NULL;
1202 #ifndef OPENSSL_NO_RSA
1205 #ifndef OPENSSL_NO_DH
1208 #ifndef OPENSSL_NO_ECDH
1209 EC_KEY *ecdh = NULL;
1210 BN_CTX *bn_ctx = NULL;
1211 EC_POINT *srvr_ecpoint = NULL;
1213 int encoded_pt_len = 0;
1216 /* use same message size as in ssl3_get_certificate_request()
1217 * as ServerKeyExchange message may be skipped */
1218 n=s->method->ssl_get_message(s,
1219 SSL3_ST_CR_KEY_EXCH_A,
1220 SSL3_ST_CR_KEY_EXCH_B,
1224 if (!ok) return((int)n);
1226 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1228 #ifndef OPENSSL_NO_PSK
1229 /* In plain PSK ciphersuite, ServerKeyExchange can be
1230 omitted if no identity hint is sent. Set
1231 session->sess_cert anyway to avoid problems
1233 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1235 s->session->sess_cert=ssl_sess_cert_new();
1236 if (s->ctx->psk_identity_hint)
1237 OPENSSL_free(s->ctx->psk_identity_hint);
1238 s->ctx->psk_identity_hint = NULL;
1241 s->s3->tmp.reuse_message=1;
1245 param=p=(unsigned char *)s->init_msg;
1246 if (s->session->sess_cert != NULL)
1248 #ifndef OPENSSL_NO_RSA
1249 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1251 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1252 s->session->sess_cert->peer_rsa_tmp=NULL;
1255 #ifndef OPENSSL_NO_DH
1256 if (s->session->sess_cert->peer_dh_tmp)
1258 DH_free(s->session->sess_cert->peer_dh_tmp);
1259 s->session->sess_cert->peer_dh_tmp=NULL;
1262 #ifndef OPENSSL_NO_ECDH
1263 if (s->session->sess_cert->peer_ecdh_tmp)
1265 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1266 s->session->sess_cert->peer_ecdh_tmp=NULL;
1272 s->session->sess_cert=ssl_sess_cert_new();
1276 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1277 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1278 EVP_MD_CTX_init(&md_ctx);
1280 #ifndef OPENSSL_NO_PSK
1281 if (alg_k & SSL_kPSK)
1283 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1285 al=SSL_AD_HANDSHAKE_FAILURE;
1288 /* Store PSK identity hint for later use, hint is used
1289 * in ssl3_send_client_key_exchange. Assume that the
1290 * maximum length of a PSK identity hint can be as
1291 * long as the maximum length of a PSK identity. */
1292 if (i > PSK_MAX_IDENTITY_LEN)
1294 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1295 SSL_R_DATA_LENGTH_TOO_LONG);
1300 al=SSL_AD_DECODE_ERROR;
1301 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1302 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1305 /* If received PSK identity hint contains NULL
1306 * characters, the hint is truncated from the first
1307 * NULL. p may not be ending with NULL, so create a
1308 * NULL-terminated string. */
1309 memcpy(tmp_id_hint, p, i);
1310 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1311 if (s->ctx->psk_identity_hint != NULL)
1312 OPENSSL_free(s->ctx->psk_identity_hint);
1313 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1314 if (s->ctx->psk_identity_hint == NULL)
1316 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1324 #endif /* !OPENSSL_NO_PSK */
1325 #ifndef OPENSSL_NO_SRP
1326 if (alg_k & SSL_kSRP)
1332 al=SSL_AD_DECODE_ERROR;
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH);
1336 if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL)))
1338 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1347 al=SSL_AD_DECODE_ERROR;
1348 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH);
1351 if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL)))
1353 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1358 i = (unsigned int)(p[0]);
1363 al=SSL_AD_DECODE_ERROR;
1364 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH);
1367 if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL)))
1369 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1378 al=SSL_AD_DECODE_ERROR;
1379 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH);
1382 if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL)))
1384 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1390 /* We must check if there is a certificate */
1391 #ifndef OPENSSL_NO_RSA
1392 if (alg_a & SSL_aRSA)
1393 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1398 #ifndef OPENSSL_NO_DSA
1399 else if (alg_a & SSL_aDSS)
1400 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1404 #endif /* !OPENSSL_NO_SRP */
1405 #ifndef OPENSSL_NO_RSA
1406 if (alg_k & SSL_kRSA)
1408 if ((rsa=RSA_new()) == NULL)
1410 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1417 al=SSL_AD_DECODE_ERROR;
1418 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1421 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1423 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1432 al=SSL_AD_DECODE_ERROR;
1433 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1436 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1438 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1444 /* this should be because we are using an export cipher */
1445 if (alg_a & SSL_aRSA)
1446 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1449 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1452 s->session->sess_cert->peer_rsa_tmp=rsa;
1455 #else /* OPENSSL_NO_RSA */
1459 #ifndef OPENSSL_NO_DH
1460 else if (alg_k & SSL_kEDH)
1462 if ((dh=DH_new()) == NULL)
1464 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1471 al=SSL_AD_DECODE_ERROR;
1472 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1475 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1477 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1486 al=SSL_AD_DECODE_ERROR;
1487 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1490 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1492 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1501 al=SSL_AD_DECODE_ERROR;
1502 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1505 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1507 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1513 #ifndef OPENSSL_NO_RSA
1514 if (alg_a & SSL_aRSA)
1515 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1520 #ifndef OPENSSL_NO_DSA
1521 else if (alg_a & SSL_aDSS)
1522 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1524 /* else anonymous DH, so no certificate or pkey. */
1526 s->session->sess_cert->peer_dh_tmp=dh;
1529 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1531 al=SSL_AD_ILLEGAL_PARAMETER;
1532 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1535 #endif /* !OPENSSL_NO_DH */
1537 #ifndef OPENSSL_NO_ECDH
1538 else if (alg_k & SSL_kEECDH)
1541 const EC_GROUP *group;
1543 if ((ecdh=EC_KEY_new()) == NULL)
1545 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1549 /* Extract elliptic curve parameters and the
1550 * server's ephemeral ECDH public key.
1551 * Keep accumulating lengths of various components in
1552 * param_len and make sure it never exceeds n.
1555 /* XXX: For now we only support named (not generic) curves
1556 * and the ECParameters in this case is just three bytes.
1559 if ((param_len > n) ||
1560 (*p != NAMED_CURVE_TYPE) ||
1561 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1563 al=SSL_AD_INTERNAL_ERROR;
1564 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1568 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1571 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1574 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1576 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1579 EC_GROUP_free(ngroup);
1581 group = EC_KEY_get0_group(ecdh);
1583 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1584 (EC_GROUP_get_degree(group) > 163))
1586 al=SSL_AD_EXPORT_RESTRICTION;
1587 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1593 /* Next, get the encoded ECPoint */
1594 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1595 ((bn_ctx = BN_CTX_new()) == NULL))
1597 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1601 encoded_pt_len = *p; /* length of encoded point */
1603 param_len += (1 + encoded_pt_len);
1604 if ((param_len > n) ||
1605 (EC_POINT_oct2point(group, srvr_ecpoint,
1606 p, encoded_pt_len, bn_ctx) == 0))
1608 al=SSL_AD_DECODE_ERROR;
1609 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1616 /* The ECC/TLS specification does not mention
1617 * the use of DSA to sign ECParameters in the server
1618 * key exchange message. We do support RSA and ECDSA.
1621 #ifndef OPENSSL_NO_RSA
1622 else if (alg_a & SSL_aRSA)
1623 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1625 #ifndef OPENSSL_NO_ECDSA
1626 else if (alg_a & SSL_aECDSA)
1627 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1629 /* else anonymous ECDH, so no certificate or pkey. */
1630 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1631 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1633 BN_CTX_free(bn_ctx);
1635 EC_POINT_free(srvr_ecpoint);
1636 srvr_ecpoint = NULL;
1640 al=SSL_AD_UNEXPECTED_MESSAGE;
1641 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1644 #endif /* !OPENSSL_NO_ECDH */
1647 /* p points to the next byte, there are 'n' bytes left */
1649 /* if it was signed, check the signature */
1652 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1654 int sigalg = tls12_get_sigid(pkey);
1655 /* Should never happen */
1658 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1661 /* Check key type is consistent with signature */
1662 if (sigalg != (int)p[1])
1664 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE);
1665 al=SSL_AD_DECODE_ERROR;
1668 md = tls12_get_hash(p[0]);
1671 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST);
1672 al=SSL_AD_DECODE_ERROR;
1676 fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md));
1686 j=EVP_PKEY_size(pkey);
1688 if ((i != n) || (n > j) || (n <= 0))
1690 /* wrong packet length */
1691 al=SSL_AD_DECODE_ERROR;
1692 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1696 #ifndef OPENSSL_NO_RSA
1697 if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION)
1703 for (num=2; num > 0; num--)
1705 EVP_MD_CTX_set_flags(&md_ctx,
1706 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1707 EVP_DigestInit_ex(&md_ctx,(num == 2)
1708 ?s->ctx->md5:s->ctx->sha1, NULL);
1709 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1710 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1711 EVP_DigestUpdate(&md_ctx,param,param_len);
1712 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1716 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1720 al=SSL_AD_DECRYPT_ERROR;
1721 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1727 al=SSL_AD_DECRYPT_ERROR;
1728 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1735 EVP_VerifyInit_ex(&md_ctx, md, NULL);
1736 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1737 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1738 EVP_VerifyUpdate(&md_ctx,param,param_len);
1739 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1742 al=SSL_AD_DECRYPT_ERROR;
1743 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1750 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1751 /* aNULL or kPSK do not need public keys */
1753 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1756 /* still data left over */
1759 al=SSL_AD_DECODE_ERROR;
1760 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1764 EVP_PKEY_free(pkey);
1765 EVP_MD_CTX_cleanup(&md_ctx);
1768 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1770 EVP_PKEY_free(pkey);
1771 #ifndef OPENSSL_NO_RSA
1775 #ifndef OPENSSL_NO_DH
1779 #ifndef OPENSSL_NO_ECDH
1780 BN_CTX_free(bn_ctx);
1781 EC_POINT_free(srvr_ecpoint);
1785 EVP_MD_CTX_cleanup(&md_ctx);
1789 int ssl3_get_certificate_request(SSL *s)
1792 unsigned long n,nc,l;
1793 unsigned int llen, ctype_num,i;
1795 const unsigned char *p,*q;
1797 STACK_OF(X509_NAME) *ca_sk=NULL;
1799 n=s->method->ssl_get_message(s,
1800 SSL3_ST_CR_CERT_REQ_A,
1801 SSL3_ST_CR_CERT_REQ_B,
1806 if (!ok) return((int)n);
1808 s->s3->tmp.cert_req=0;
1810 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1812 s->s3->tmp.reuse_message=1;
1813 /* If we get here we don't need any cached handshake records
1814 * as we wont be doing client auth.
1816 if (s->s3->handshake_buffer)
1818 if (!ssl3_digest_cached_records(s))
1824 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1826 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1827 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1831 /* TLS does not like anon-DH with client cert */
1832 if (s->version > SSL3_VERSION)
1834 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1836 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1837 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1842 p=d=(unsigned char *)s->init_msg;
1844 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1846 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1850 /* get the certificate types */
1852 if (ctype_num > SSL3_CT_NUMBER)
1853 ctype_num=SSL3_CT_NUMBER;
1854 for (i=0; i<ctype_num; i++)
1855 s->s3->tmp.ctype[i]= p[i];
1857 if (TLS1_get_version(s) >= TLS1_2_VERSION)
1860 /* Check we have enough room for signature algorithms and
1861 * following length value.
1863 if ((unsigned long)(p - d + llen + 2) > n)
1865 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1866 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG);
1869 if ((llen & 1) || !tls1_process_sigalgs(s, p, llen))
1871 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1872 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR);
1878 /* get the CA RDNs */
1883 out=fopen("/tmp/vsign.der","w");
1884 fwrite(p,1,llen,out);
1889 if ((unsigned long)(p - d + llen) != n)
1891 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1892 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1896 for (nc=0; nc<llen; )
1899 if ((l+nc+2) > llen)
1901 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1902 goto cont; /* netscape bugs */
1903 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1904 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1910 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1912 /* If netscape tolerance is on, ignore errors */
1913 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1917 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1918 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1925 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1926 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1929 if (!sk_X509_NAME_push(ca_sk,xn))
1931 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1945 /* we should setup a certificate to return.... */
1946 s->s3->tmp.cert_req=1;
1947 s->s3->tmp.ctype_num=ctype_num;
1948 if (s->s3->tmp.ca_names != NULL)
1949 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1950 s->s3->tmp.ca_names=ca_sk;
1955 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1959 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1961 return(X509_NAME_cmp(*a,*b));
1963 #ifndef OPENSSL_NO_TLSEXT
1964 int ssl3_get_new_session_ticket(SSL *s)
1966 int ok,al,ret=0, ticklen;
1968 const unsigned char *p;
1971 n=s->method->ssl_get_message(s,
1972 SSL3_ST_CR_SESSION_TICKET_A,
1973 SSL3_ST_CR_SESSION_TICKET_B,
1981 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1983 s->s3->tmp.reuse_message=1;
1986 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1988 al=SSL_AD_UNEXPECTED_MESSAGE;
1989 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1994 /* need at least ticket_lifetime_hint + ticket length */
1995 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1996 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2000 p=d=(unsigned char *)s->init_msg;
2001 n2l(p, s->session->tlsext_tick_lifetime_hint);
2003 /* ticket_lifetime_hint + ticket_length + ticket */
2004 if (ticklen + 6 != n)
2006 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
2007 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
2010 if (s->session->tlsext_tick)
2012 OPENSSL_free(s->session->tlsext_tick);
2013 s->session->tlsext_ticklen = 0;
2015 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
2016 if (!s->session->tlsext_tick)
2018 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
2021 memcpy(s->session->tlsext_tick, p, ticklen);
2022 s->session->tlsext_ticklen = ticklen;
2023 /* There are two ways to detect a resumed ticket sesion.
2024 * One is to set an appropriate session ID and then the server
2025 * must return a match in ServerHello. This allows the normal
2026 * client session ID matching to work and we know much
2027 * earlier that the ticket has been accepted.
2029 * The other way is to set zero length session ID when the
2030 * ticket is presented and rely on the handshake to determine
2031 * session resumption.
2033 * We choose the former approach because this fits in with
2034 * assumptions elsewhere in OpenSSL. The session ID is set
2035 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
2038 EVP_Digest(p, ticklen,
2039 s->session->session_id, &s->session->session_id_length,
2040 #ifndef OPENSSL_NO_SHA256
2041 EVP_sha256(), NULL);
2048 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2053 int ssl3_get_cert_status(SSL *s)
2056 unsigned long resplen,n;
2057 const unsigned char *p;
2059 n=s->method->ssl_get_message(s,
2060 SSL3_ST_CR_CERT_STATUS_A,
2061 SSL3_ST_CR_CERT_STATUS_B,
2062 SSL3_MT_CERTIFICATE_STATUS,
2066 if (!ok) return((int)n);
2069 /* need at least status type + length */
2070 al = SSL_AD_DECODE_ERROR;
2071 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2074 p = (unsigned char *)s->init_msg;
2075 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
2077 al = SSL_AD_DECODE_ERROR;
2078 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
2082 if (resplen + 4 != n)
2084 al = SSL_AD_DECODE_ERROR;
2085 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
2088 if (s->tlsext_ocsp_resp)
2089 OPENSSL_free(s->tlsext_ocsp_resp);
2090 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
2091 if (!s->tlsext_ocsp_resp)
2093 al = SSL_AD_INTERNAL_ERROR;
2094 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2097 s->tlsext_ocsp_resplen = resplen;
2098 if (s->ctx->tlsext_status_cb)
2101 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
2104 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
2105 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
2110 al = SSL_AD_INTERNAL_ERROR;
2111 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
2117 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2122 int ssl3_get_server_done(SSL *s)
2127 n=s->method->ssl_get_message(s,
2128 SSL3_ST_CR_SRVR_DONE_A,
2129 SSL3_ST_CR_SRVR_DONE_B,
2130 SSL3_MT_SERVER_DONE,
2131 30, /* should be very small, like 0 :-) */
2134 if (!ok) return((int)n);
2137 /* should contain no data */
2138 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
2139 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
2147 int ssl3_send_client_key_exchange(SSL *s)
2149 unsigned char *p,*d;
2151 unsigned long alg_k;
2152 #ifndef OPENSSL_NO_RSA
2154 EVP_PKEY *pkey=NULL;
2156 #ifndef OPENSSL_NO_KRB5
2158 #endif /* OPENSSL_NO_KRB5 */
2159 #ifndef OPENSSL_NO_ECDH
2160 EC_KEY *clnt_ecdh = NULL;
2161 const EC_POINT *srvr_ecpoint = NULL;
2162 EVP_PKEY *srvr_pub_pkey = NULL;
2163 unsigned char *encodedPoint = NULL;
2164 int encoded_pt_len = 0;
2165 BN_CTX * bn_ctx = NULL;
2168 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2170 d=(unsigned char *)s->init_buf->data;
2173 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2175 /* Fool emacs indentation */
2177 #ifndef OPENSSL_NO_RSA
2178 else if (alg_k & SSL_kRSA)
2181 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2183 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2184 rsa=s->session->sess_cert->peer_rsa_tmp;
2187 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2188 if ((pkey == NULL) ||
2189 (pkey->type != EVP_PKEY_RSA) ||
2190 (pkey->pkey.rsa == NULL))
2192 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2196 EVP_PKEY_free(pkey);
2199 tmp_buf[0]=s->client_version>>8;
2200 tmp_buf[1]=s->client_version&0xff;
2201 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2204 s->session->master_key_length=sizeof tmp_buf;
2207 /* Fix buf for TLS and beyond */
2208 if (s->version > SSL3_VERSION)
2210 n=RSA_public_encrypt(sizeof tmp_buf,
2211 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2213 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2214 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2218 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2222 /* Fix buf for TLS and beyond */
2223 if (s->version > SSL3_VERSION)
2229 s->session->master_key_length=
2230 s->method->ssl3_enc->generate_master_secret(s,
2231 s->session->master_key,
2232 tmp_buf,sizeof tmp_buf);
2233 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2236 #ifndef OPENSSL_NO_KRB5
2237 else if (alg_k & SSL_kKRB5)
2239 krb5_error_code krb5rc;
2240 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2241 /* krb5_data krb5_ap_req; */
2242 krb5_data *enc_ticket;
2243 krb5_data authenticator, *authp = NULL;
2244 EVP_CIPHER_CTX ciph_ctx;
2245 const EVP_CIPHER *enc = NULL;
2246 unsigned char iv[EVP_MAX_IV_LENGTH];
2247 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2248 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2249 + EVP_MAX_IV_LENGTH];
2250 int padl, outl = sizeof(epms);
2252 EVP_CIPHER_CTX_init(&ciph_ctx);
2255 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2257 #endif /* KSSL_DEBUG */
2261 if (KRB5SENDAUTH) authp = &authenticator;
2262 #endif /* KRB5SENDAUTH */
2264 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2266 enc = kssl_map_enc(kssl_ctx->enctype);
2271 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2272 if (krb5rc && kssl_err.text)
2273 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2275 #endif /* KSSL_DEBUG */
2279 ssl3_send_alert(s,SSL3_AL_FATAL,
2280 SSL_AD_HANDSHAKE_FAILURE);
2281 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2286 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2287 ** in place of RFC 2712 KerberosWrapper, as in:
2289 ** Send ticket (copy to *p, set n = length)
2290 ** n = krb5_ap_req.length;
2291 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2292 ** if (krb5_ap_req.data)
2293 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2295 ** Now using real RFC 2712 KerberosWrapper
2296 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2297 ** Note: 2712 "opaque" types are here replaced
2298 ** with a 2-byte length followed by the value.
2300 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2301 ** Where "xx xx" = length bytes. Shown here with
2302 ** optional authenticator omitted.
2305 /* KerberosWrapper.Ticket */
2306 s2n(enc_ticket->length,p);
2307 memcpy(p, enc_ticket->data, enc_ticket->length);
2308 p+= enc_ticket->length;
2309 n = enc_ticket->length + 2;
2311 /* KerberosWrapper.Authenticator */
2312 if (authp && authp->length)
2314 s2n(authp->length,p);
2315 memcpy(p, authp->data, authp->length);
2317 n+= authp->length + 2;
2325 s2n(0,p);/* null authenticator length */
2329 tmp_buf[0]=s->client_version>>8;
2330 tmp_buf[1]=s->client_version&0xff;
2331 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2334 /* 20010420 VRS. Tried it this way; failed.
2335 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2336 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2337 ** kssl_ctx->length);
2338 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2341 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2342 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2344 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2346 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2348 if (outl > (int)sizeof epms)
2350 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2353 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2355 /* KerberosWrapper.EncryptedPreMasterSecret */
2357 memcpy(p, epms, outl);
2361 s->session->master_key_length=
2362 s->method->ssl3_enc->generate_master_secret(s,
2363 s->session->master_key,
2364 tmp_buf, sizeof tmp_buf);
2366 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2367 OPENSSL_cleanse(epms, outl);
2370 #ifndef OPENSSL_NO_DH
2371 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2373 DH *dh_srvr,*dh_clnt;
2375 if (s->session->sess_cert == NULL)
2377 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2378 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2382 if (s->session->sess_cert->peer_dh_tmp != NULL)
2383 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2386 /* we get them from the cert */
2387 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2388 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2392 /* generate a new random key */
2393 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2395 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2398 if (!DH_generate_key(dh_clnt))
2400 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2405 /* use the 'p' output buffer for the DH key, but
2406 * make sure to clear it out afterwards */
2408 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2412 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2417 /* generate master key from the result */
2418 s->session->master_key_length=
2419 s->method->ssl3_enc->generate_master_secret(s,
2420 s->session->master_key,p,n);
2424 /* send off the data */
2425 n=BN_num_bytes(dh_clnt->pub_key);
2427 BN_bn2bin(dh_clnt->pub_key,p);
2432 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2436 #ifndef OPENSSL_NO_ECDH
2437 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2439 const EC_GROUP *srvr_group = NULL;
2441 int ecdh_clnt_cert = 0;
2444 /* Did we send out the client's
2445 * ECDH share for use in premaster
2446 * computation as part of client certificate?
2447 * If so, set ecdh_clnt_cert to 1.
2449 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2451 /* XXX: For now, we do not support client
2452 * authentication using ECDH certificates.
2453 * To add such support, one needs to add
2454 * code that checks for appropriate
2455 * conditions and sets ecdh_clnt_cert to 1.
2456 * For example, the cert have an ECC
2457 * key on the same curve as the server's
2458 * and the key should be authorized for
2461 * One also needs to add code in ssl3_connect
2462 * to skip sending the certificate verify
2465 * if ((s->cert->key->privatekey != NULL) &&
2466 * (s->cert->key->privatekey->type ==
2467 * EVP_PKEY_EC) && ...)
2468 * ecdh_clnt_cert = 1;
2472 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2474 tkey = s->session->sess_cert->peer_ecdh_tmp;
2478 /* Get the Server Public Key from Cert */
2479 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2480 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2481 if ((srvr_pub_pkey == NULL) ||
2482 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2483 (srvr_pub_pkey->pkey.ec == NULL))
2485 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2486 ERR_R_INTERNAL_ERROR);
2490 tkey = srvr_pub_pkey->pkey.ec;
2493 srvr_group = EC_KEY_get0_group(tkey);
2494 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2496 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2498 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2499 ERR_R_INTERNAL_ERROR);
2503 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2505 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2509 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2511 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2516 /* Reuse key info from our certificate
2517 * We only need our private key to perform
2518 * the ECDH computation.
2520 const BIGNUM *priv_key;
2521 tkey = s->cert->key->privatekey->pkey.ec;
2522 priv_key = EC_KEY_get0_private_key(tkey);
2523 if (priv_key == NULL)
2525 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2528 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2530 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2536 /* Generate a new ECDH key pair */
2537 if (!(EC_KEY_generate_key(clnt_ecdh)))
2539 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2544 /* use the 'p' output buffer for the ECDH key, but
2545 * make sure to clear it out afterwards
2548 field_size = EC_GROUP_get_degree(srvr_group);
2549 if (field_size <= 0)
2551 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2555 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2558 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2563 /* generate master key from the result */
2564 s->session->master_key_length = s->method->ssl3_enc \
2565 -> generate_master_secret(s,
2566 s->session->master_key,
2569 memset(p, 0, n); /* clean up */
2573 /* Send empty client key exch message */
2578 /* First check the size of encoding and
2579 * allocate memory accordingly.
2582 EC_POINT_point2oct(srvr_group,
2583 EC_KEY_get0_public_key(clnt_ecdh),
2584 POINT_CONVERSION_UNCOMPRESSED,
2587 encodedPoint = (unsigned char *)
2588 OPENSSL_malloc(encoded_pt_len *
2589 sizeof(unsigned char));
2590 bn_ctx = BN_CTX_new();
2591 if ((encodedPoint == NULL) ||
2594 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2598 /* Encode the public key */
2599 n = EC_POINT_point2oct(srvr_group,
2600 EC_KEY_get0_public_key(clnt_ecdh),
2601 POINT_CONVERSION_UNCOMPRESSED,
2602 encodedPoint, encoded_pt_len, bn_ctx);
2604 *p = n; /* length of encoded point */
2605 /* Encoded point will be copied here */
2607 /* copy the point */
2608 memcpy((unsigned char *)p, encodedPoint, n);
2609 /* increment n to account for length field */
2613 /* Free allocated memory */
2614 BN_CTX_free(bn_ctx);
2615 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2616 if (clnt_ecdh != NULL)
2617 EC_KEY_free(clnt_ecdh);
2618 EVP_PKEY_free(srvr_pub_pkey);
2620 #endif /* !OPENSSL_NO_ECDH */
2621 else if (alg_k & SSL_kGOST)
2623 /* GOST key exchange message creation */
2624 EVP_PKEY_CTX *pkey_ctx;
2627 unsigned int md_len;
2629 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2630 EVP_MD_CTX *ukm_hash;
2633 /* Get server sertificate PKEY and create ctx from it */
2634 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2636 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2638 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2642 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2643 /* If we have send a certificate, and certificate key
2645 * parameters match those of server certificate, use
2646 * certificate key for key exchange
2649 /* Otherwise, generate ephemeral key pair */
2651 EVP_PKEY_encrypt_init(pkey_ctx);
2652 /* Generate session key */
2653 RAND_bytes(premaster_secret,32);
2654 /* If we have client certificate, use its secret as peer key */
2655 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2656 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2657 /* If there was an error - just ignore it. Ephemeral key
2663 /* Compute shared IV and store it in algorithm-specific
2665 ukm_hash = EVP_MD_CTX_create();
2666 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2667 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2668 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2669 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2670 EVP_MD_CTX_destroy(ukm_hash);
2671 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2673 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2677 /* Make GOST keytransport blob message */
2678 /*Encapsulate it into sequence */
2679 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2681 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2682 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2689 *(p++)= msglen & 0xff;
2694 *(p++)= msglen & 0xff;
2697 memcpy(p, tmp, msglen);
2698 /* Check if pubkey from client certificate was used */
2699 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2701 /* Set flag "skip certificate verify" */
2702 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2704 EVP_PKEY_CTX_free(pkey_ctx);
2705 s->session->master_key_length=
2706 s->method->ssl3_enc->generate_master_secret(s,
2707 s->session->master_key,premaster_secret,32);
2708 EVP_PKEY_free(pub_key);
2711 #ifndef OPENSSL_NO_SRP
2712 else if (alg_k & SSL_kSRP)
2714 if (s->srp_ctx.A != NULL)
2716 /* send off the data */
2717 n=BN_num_bytes(s->srp_ctx.A);
2719 BN_bn2bin(s->srp_ctx.A,p);
2724 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2727 if (s->session->srp_username != NULL)
2728 OPENSSL_free(s->session->srp_username);
2729 s->session->srp_username = BUF_strdup(s->srp_ctx.login);
2730 if (s->session->srp_username == NULL)
2732 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2733 ERR_R_MALLOC_FAILURE);
2737 if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0)
2739 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2744 #ifndef OPENSSL_NO_PSK
2745 else if (alg_k & SSL_kPSK)
2747 char identity[PSK_MAX_IDENTITY_LEN];
2748 unsigned char *t = NULL;
2749 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2750 unsigned int pre_ms_len = 0, psk_len = 0;
2754 if (s->psk_client_callback == NULL)
2756 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2757 SSL_R_PSK_NO_CLIENT_CB);
2761 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2762 identity, PSK_MAX_IDENTITY_LEN,
2763 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2764 if (psk_len > PSK_MAX_PSK_LEN)
2766 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2767 ERR_R_INTERNAL_ERROR);
2770 else if (psk_len == 0)
2772 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2773 SSL_R_PSK_IDENTITY_NOT_FOUND);
2777 /* create PSK pre_master_secret */
2778 pre_ms_len = 2+psk_len+2+psk_len;
2780 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2782 memset(t, 0, psk_len);
2786 if (s->session->psk_identity_hint != NULL)
2787 OPENSSL_free(s->session->psk_identity_hint);
2788 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2789 if (s->ctx->psk_identity_hint != NULL &&
2790 s->session->psk_identity_hint == NULL)
2792 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2793 ERR_R_MALLOC_FAILURE);
2797 if (s->session->psk_identity != NULL)
2798 OPENSSL_free(s->session->psk_identity);
2799 s->session->psk_identity = BUF_strdup(identity);
2800 if (s->session->psk_identity == NULL)
2802 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2803 ERR_R_MALLOC_FAILURE);
2807 s->session->master_key_length =
2808 s->method->ssl3_enc->generate_master_secret(s,
2809 s->session->master_key,
2810 psk_or_pre_ms, pre_ms_len);
2811 n = strlen(identity);
2813 memcpy(p, identity, n);
2817 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2818 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2821 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2828 ssl3_send_alert(s, SSL3_AL_FATAL,
2829 SSL_AD_HANDSHAKE_FAILURE);
2830 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2831 ERR_R_INTERNAL_ERROR);
2835 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2838 s->state=SSL3_ST_CW_KEY_EXCH_B;
2839 /* number of bytes to write */
2844 /* SSL3_ST_CW_KEY_EXCH_B */
2845 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2847 #ifndef OPENSSL_NO_ECDH
2848 BN_CTX_free(bn_ctx);
2849 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2850 if (clnt_ecdh != NULL)
2851 EC_KEY_free(clnt_ecdh);
2852 EVP_PKEY_free(srvr_pub_pkey);
2857 int ssl3_send_client_verify(SSL *s)
2859 unsigned char *p,*d;
2860 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2862 EVP_PKEY_CTX *pctx=NULL;
2868 EVP_MD_CTX_init(&mctx);
2870 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2872 d=(unsigned char *)s->init_buf->data;
2874 pkey=s->cert->key->privatekey;
2875 /* Create context from key and test if sha1 is allowed as digest */
2876 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2877 EVP_PKEY_sign_init(pctx);
2878 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2880 if (TLS1_get_version(s) < TLS1_2_VERSION)
2881 s->method->ssl3_enc->cert_verify_mac(s,
2883 &(data[MD5_DIGEST_LENGTH]));
2889 /* For TLS v1.2 send signature algorithm and signature
2890 * using agreed digest and cached handshake records.
2892 if (TLS1_get_version(s) >= TLS1_2_VERSION)
2896 const EVP_MD *md = s->cert->key->digest;
2897 hdatalen = BIO_get_mem_data(s->s3->handshake_buffer,
2899 if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md))
2901 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2902 ERR_R_INTERNAL_ERROR);
2907 fprintf(stderr, "Using TLS 1.2 with client alg %s\n",
2910 if (!EVP_SignInit_ex(&mctx, md, NULL)
2911 || !EVP_SignUpdate(&mctx, hdata, hdatalen)
2912 || !EVP_SignFinal(&mctx, p + 2, &u, pkey))
2914 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2920 if (!ssl3_digest_cached_records(s))
2924 #ifndef OPENSSL_NO_RSA
2925 if (pkey->type == EVP_PKEY_RSA)
2927 s->method->ssl3_enc->cert_verify_mac(s,
2930 if (RSA_sign(NID_md5_sha1, data,
2931 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2932 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2934 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2942 #ifndef OPENSSL_NO_DSA
2943 if (pkey->type == EVP_PKEY_DSA)
2945 if (!DSA_sign(pkey->save_type,
2946 &(data[MD5_DIGEST_LENGTH]),
2947 SHA_DIGEST_LENGTH,&(p[2]),
2948 (unsigned int *)&j,pkey->pkey.dsa))
2950 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2958 #ifndef OPENSSL_NO_ECDSA
2959 if (pkey->type == EVP_PKEY_EC)
2961 if (!ECDSA_sign(pkey->save_type,
2962 &(data[MD5_DIGEST_LENGTH]),
2963 SHA_DIGEST_LENGTH,&(p[2]),
2964 (unsigned int *)&j,pkey->pkey.ec))
2966 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2975 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2977 unsigned char signbuf[64];
2980 s->method->ssl3_enc->cert_verify_mac(s,
2981 NID_id_GostR3411_94,
2983 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2984 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2985 ERR_R_INTERNAL_ERROR);
2988 for (i=63,j=0; i>=0; j++, i--) {
2996 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2999 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
3002 s->state=SSL3_ST_CW_CERT_VRFY_B;
3003 s->init_num=(int)n+4;
3006 EVP_MD_CTX_cleanup(&mctx);
3007 EVP_PKEY_CTX_free(pctx);
3008 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3010 EVP_MD_CTX_cleanup(&mctx);
3011 EVP_PKEY_CTX_free(pctx);
3015 int ssl3_send_client_certificate(SSL *s)
3018 EVP_PKEY *pkey=NULL;
3022 if (s->state == SSL3_ST_CW_CERT_A)
3024 if ((s->cert == NULL) ||
3025 (s->cert->key->x509 == NULL) ||
3026 (s->cert->key->privatekey == NULL))
3027 s->state=SSL3_ST_CW_CERT_B;
3029 s->state=SSL3_ST_CW_CERT_C;
3032 /* We need to get a client cert */
3033 if (s->state == SSL3_ST_CW_CERT_B)
3035 /* If we get an error, we need to
3036 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
3037 * We then get retied later */
3039 i = ssl_do_client_cert_cb(s, &x509, &pkey);
3042 s->rwstate=SSL_X509_LOOKUP;
3045 s->rwstate=SSL_NOTHING;
3046 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
3048 s->state=SSL3_ST_CW_CERT_B;
3049 if ( !SSL_use_certificate(s,x509) ||
3050 !SSL_use_PrivateKey(s,pkey))
3056 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
3059 if (x509 != NULL) X509_free(x509);
3060 if (pkey != NULL) EVP_PKEY_free(pkey);
3063 if (s->version == SSL3_VERSION)
3065 s->s3->tmp.cert_req=0;
3066 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
3071 s->s3->tmp.cert_req=2;
3075 /* Ok, we have a cert */
3076 s->state=SSL3_ST_CW_CERT_C;
3079 if (s->state == SSL3_ST_CW_CERT_C)
3081 s->state=SSL3_ST_CW_CERT_D;
3082 l=ssl3_output_cert_chain(s,
3083 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
3087 /* SSL3_ST_CW_CERT_D */
3088 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
3091 #define has_bits(i,m) (((i)&(m)) == (m))
3093 int ssl3_check_cert_and_algorithm(SSL *s)
3097 EVP_PKEY *pkey=NULL;
3099 #ifndef OPENSSL_NO_RSA
3102 #ifndef OPENSSL_NO_DH
3106 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
3107 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
3109 /* we don't have a certificate */
3110 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
3113 sc=s->session->sess_cert;
3116 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
3120 #ifndef OPENSSL_NO_RSA
3121 rsa=s->session->sess_cert->peer_rsa_tmp;
3123 #ifndef OPENSSL_NO_DH
3124 dh=s->session->sess_cert->peer_dh_tmp;
3127 /* This is the passed certificate */
3129 idx=sc->peer_cert_type;
3130 #ifndef OPENSSL_NO_ECDH
3131 if (idx == SSL_PKEY_ECC)
3133 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
3135 { /* check failed */
3136 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
3145 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
3146 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
3147 EVP_PKEY_free(pkey);
3150 /* Check that we have a certificate if we require one */
3151 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
3153 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
3156 #ifndef OPENSSL_NO_DSA
3157 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
3159 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
3163 #ifndef OPENSSL_NO_RSA
3164 if ((alg_k & SSL_kRSA) &&
3165 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
3167 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
3171 #ifndef OPENSSL_NO_DH
3172 if ((alg_k & SSL_kEDH) &&
3173 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
3175 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
3178 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
3180 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
3183 #ifndef OPENSSL_NO_DSA
3184 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
3186 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
3192 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
3194 #ifndef OPENSSL_NO_RSA
3195 if (alg_k & SSL_kRSA)
3198 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3200 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
3206 #ifndef OPENSSL_NO_DH
3207 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
3210 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
3212 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
3219 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
3225 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
3230 /* Check to see if handshake is full or resumed. Usually this is just a
3231 * case of checking to see if a cache hit has occurred. In the case of
3232 * session tickets we have to check the next message to be sure.
3235 #ifndef OPENSSL_NO_TLSEXT
3236 int ssl3_check_finished(SSL *s)
3240 /* If we have no ticket it cannot be a resumed session. */
3241 if (!s->session->tlsext_tick)
3243 /* this function is called when we really expect a Certificate
3244 * message, so permit appropriate message length */
3245 n=s->method->ssl_get_message(s,
3251 if (!ok) return((int)n);
3252 s->s3->tmp.reuse_message = 1;
3253 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3254 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3261 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3264 #ifndef OPENSSL_NO_ENGINE
3265 if (s->ctx->client_cert_engine)
3267 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3268 SSL_get_client_CA_list(s),
3269 px509, ppkey, NULL, NULL, NULL);
3274 if (s->ctx->client_cert_cb)
3275 i = s->ctx->client_cert_cb(s,px509,ppkey);