2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
111 /* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
114 * Portions of the attached software ("Contribution") are developed by
115 * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
117 * The Contribution is licensed pursuant to the OpenSSL open source
118 * license provided above.
120 * ECC cipher suite support in OpenSSL originally written by
121 * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
163 #ifndef OPENSSL_NO_ENGINE
164 #include <openssl/engine.h>
167 static const SSL_METHOD *ssl3_get_client_method(int ver);
168 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
169 #ifndef OPENSSL_NO_TLSEXT
170 static int ssl3_check_finished(SSL *s);
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);
191 void (*cb)(const SSL *ssl,int type,int val)=NULL;
193 int new_state,state,skip=0;
195 RAND_add(&Time,sizeof(Time),0);
199 if (s->info_callback != NULL)
201 else if (s->ctx->info_callback != NULL)
202 cb=s->ctx->info_callback;
205 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
213 case SSL_ST_RENEGOTIATE:
215 s->state=SSL_ST_CONNECT;
216 s->ctx->stats.sess_connect_renegotiate++;
220 case SSL_ST_BEFORE|SSL_ST_CONNECT:
221 case SSL_ST_OK|SSL_ST_CONNECT:
224 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
226 if ((s->version & 0xff00 ) != 0x0300)
228 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
233 /* s->version=SSL3_VERSION; */
234 s->type=SSL_ST_CONNECT;
236 if (s->init_buf == NULL)
238 if ((buf=BUF_MEM_new()) == NULL)
243 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
252 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
254 /* setup buffing BIO */
255 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
257 /* don't push the buffering BIO quite yet */
259 ssl3_init_finished_mac(s);
261 s->state=SSL3_ST_CW_CLNT_HELLO_A;
262 s->ctx->stats.sess_connect++;
266 case SSL3_ST_CW_CLNT_HELLO_A:
267 case SSL3_ST_CW_CLNT_HELLO_B:
270 ret=ssl3_client_hello(s);
271 if (ret <= 0) goto end;
272 s->state=SSL3_ST_CR_SRVR_HELLO_A;
275 /* turn on buffering for the next lot of output */
276 if (s->bbio != s->wbio)
277 s->wbio=BIO_push(s->bbio,s->wbio);
281 case SSL3_ST_CR_SRVR_HELLO_A:
282 case SSL3_ST_CR_SRVR_HELLO_B:
283 ret=ssl3_get_server_hello(s);
284 if (ret <= 0) goto end;
287 s->state=SSL3_ST_CR_FINISHED_A;
289 s->state=SSL3_ST_CR_CERT_A;
293 case SSL3_ST_CR_CERT_A:
294 case SSL3_ST_CR_CERT_B:
295 #ifndef OPENSSL_NO_TLSEXT
296 ret=ssl3_check_finished(s);
297 if (ret <= 0) goto end;
301 if (s->tlsext_ticket_expected)
302 s->state=SSL3_ST_CR_SESSION_TICKET_A;
304 s->state=SSL3_ST_CR_FINISHED_A;
309 /* Check if it is anon DH/ECDH */
311 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
312 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
314 ret=ssl3_get_server_certificate(s);
315 if (ret <= 0) goto end;
316 #ifndef OPENSSL_NO_TLSEXT
317 if (s->tlsext_status_expected)
318 s->state=SSL3_ST_CR_CERT_STATUS_A;
320 s->state=SSL3_ST_CR_KEY_EXCH_A;
325 s->state=SSL3_ST_CR_KEY_EXCH_A;
332 s->state=SSL3_ST_CR_KEY_EXCH_A;
337 case SSL3_ST_CR_KEY_EXCH_A:
338 case SSL3_ST_CR_KEY_EXCH_B:
339 ret=ssl3_get_key_exchange(s);
340 if (ret <= 0) goto end;
341 s->state=SSL3_ST_CR_CERT_REQ_A;
344 /* at this point we check that we have the
345 * required stuff from the server */
346 if (!ssl3_check_cert_and_algorithm(s))
353 case SSL3_ST_CR_CERT_REQ_A:
354 case SSL3_ST_CR_CERT_REQ_B:
355 ret=ssl3_get_certificate_request(s);
356 if (ret <= 0) goto end;
357 s->state=SSL3_ST_CR_SRVR_DONE_A;
361 case SSL3_ST_CR_SRVR_DONE_A:
362 case SSL3_ST_CR_SRVR_DONE_B:
363 ret=ssl3_get_server_done(s);
364 if (ret <= 0) goto end;
365 if (s->s3->tmp.cert_req)
366 s->state=SSL3_ST_CW_CERT_A;
368 s->state=SSL3_ST_CW_KEY_EXCH_A;
373 case SSL3_ST_CW_CERT_A:
374 case SSL3_ST_CW_CERT_B:
375 case SSL3_ST_CW_CERT_C:
376 case SSL3_ST_CW_CERT_D:
377 ret=ssl3_send_client_certificate(s);
378 if (ret <= 0) goto end;
379 s->state=SSL3_ST_CW_KEY_EXCH_A;
383 case SSL3_ST_CW_KEY_EXCH_A:
384 case SSL3_ST_CW_KEY_EXCH_B:
385 ret=ssl3_send_client_key_exchange(s);
386 if (ret <= 0) goto end;
387 /* EAY EAY EAY need to check for DH fix cert
389 /* For TLS, cert_req is set to 2, so a cert chain
390 * of nothing is sent, but no verify packet is sent */
391 /* XXX: For now, we do not support client
392 * authentication in ECDH cipher suites with
393 * ECDH (rather than ECDSA) certificates.
394 * We need to skip the certificate verify
395 * message when client's ECDH public key is sent
396 * inside the client certificate.
398 if (s->s3->tmp.cert_req == 1)
400 s->state=SSL3_ST_CW_CERT_VRFY_A;
404 s->state=SSL3_ST_CW_CHANGE_A;
405 s->s3->change_cipher_spec=0;
407 if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY)
409 s->state=SSL3_ST_CW_CHANGE_A;
410 s->s3->change_cipher_spec=0;
416 case SSL3_ST_CW_CERT_VRFY_A:
417 case SSL3_ST_CW_CERT_VRFY_B:
418 ret=ssl3_send_client_verify(s);
419 if (ret <= 0) goto end;
420 s->state=SSL3_ST_CW_CHANGE_A;
422 s->s3->change_cipher_spec=0;
425 case SSL3_ST_CW_CHANGE_A:
426 case SSL3_ST_CW_CHANGE_B:
427 ret=ssl3_send_change_cipher_spec(s,
428 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
429 if (ret <= 0) goto end;
430 s->state=SSL3_ST_CW_FINISHED_A;
433 s->session->cipher=s->s3->tmp.new_cipher;
434 #ifdef OPENSSL_NO_COMP
435 s->session->compress_meth=0;
437 if (s->s3->tmp.new_compression == NULL)
438 s->session->compress_meth=0;
440 s->session->compress_meth=
441 s->s3->tmp.new_compression->id;
443 if (!s->method->ssl3_enc->setup_key_block(s))
449 if (!s->method->ssl3_enc->change_cipher_state(s,
450 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
458 case SSL3_ST_CW_FINISHED_A:
459 case SSL3_ST_CW_FINISHED_B:
460 ret=ssl3_send_finished(s,
461 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
462 s->method->ssl3_enc->client_finished_label,
463 s->method->ssl3_enc->client_finished_label_len);
464 if (ret <= 0) goto end;
465 s->state=SSL3_ST_CW_FLUSH;
468 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
471 s->s3->tmp.next_state=SSL_ST_OK;
472 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
475 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
476 s->s3->delay_buf_pop_ret=0;
481 #ifndef OPENSSL_NO_TLSEXT
482 /* Allow NewSessionTicket if ticket expected */
483 if (s->tlsext_ticket_expected)
484 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
488 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
493 #ifndef OPENSSL_NO_TLSEXT
494 case SSL3_ST_CR_SESSION_TICKET_A:
495 case SSL3_ST_CR_SESSION_TICKET_B:
496 ret=ssl3_get_new_session_ticket(s);
497 if (ret <= 0) goto end;
498 s->state=SSL3_ST_CR_FINISHED_A;
502 case SSL3_ST_CR_CERT_STATUS_A:
503 case SSL3_ST_CR_CERT_STATUS_B:
504 ret=ssl3_get_cert_status(s);
505 if (ret <= 0) goto end;
506 s->state=SSL3_ST_CR_KEY_EXCH_A;
511 case SSL3_ST_CR_FINISHED_A:
512 case SSL3_ST_CR_FINISHED_B:
514 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
515 SSL3_ST_CR_FINISHED_B);
516 if (ret <= 0) goto end;
519 s->state=SSL3_ST_CW_CHANGE_A;
525 case SSL3_ST_CW_FLUSH:
526 /* number of bytes to be flushed */
527 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
530 s->rwstate=SSL_WRITING;
531 num1=BIO_flush(s->wbio);
532 if (num1 <= 0) { ret= -1; goto end; }
533 s->rwstate=SSL_NOTHING;
536 s->state=s->s3->tmp.next_state;
540 /* clean a few things up */
541 ssl3_cleanup_key_block(s);
543 if (s->init_buf != NULL)
545 BUF_MEM_free(s->init_buf);
549 /* If we are not 'joining' the last two packets,
550 * remove the buffering now */
551 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
552 ssl_free_wbio_buffer(s);
553 /* else do it later in ssl3_write */
558 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
559 if (s->hit) s->ctx->stats.sess_hit++;
563 s->handshake_func=ssl3_connect;
564 s->ctx->stats.sess_connect_good++;
566 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
572 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
578 /* did we do anything */
579 if (!s->s3->tmp.reuse_message && !skip)
583 if ((ret=BIO_flush(s->wbio)) <= 0)
587 if ((cb != NULL) && (s->state != state))
591 cb(s,SSL_CB_CONNECT_LOOP,1);
602 cb(s,SSL_CB_CONNECT_EXIT,ret);
607 int ssl3_client_hello(SSL *s)
612 unsigned long Time,l;
613 #ifndef OPENSSL_NO_COMP
618 buf=(unsigned char *)s->init_buf->data;
619 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
621 SSL_SESSION *sess = s->session;
622 if ((sess == NULL) ||
623 (sess->ssl_version != s->version) ||
624 #ifdef OPENSSL_NO_TLSEXT
625 !sess->session_id_length ||
627 (!sess->session_id_length && !sess->tlsext_tick) ||
629 (sess->not_resumable))
631 if (!ssl_get_new_session(s,0))
634 /* else use the pre-loaded session */
636 p=s->s3->client_random;
637 Time=(unsigned long)time(NULL); /* Time */
639 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
642 /* Do the message type and length last */
645 *(p++)=s->version>>8;
646 *(p++)=s->version&0xff;
647 s->client_version=s->version;
650 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
657 i=s->session->session_id_length;
661 if (i > (int)sizeof(s->session->session_id))
663 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
666 memcpy(p,s->session->session_id,i);
670 /* Ciphers supported */
671 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
674 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
681 #ifdef OPENSSL_NO_COMP
685 if ((s->options & SSL_OP_NO_COMPRESSION)
686 || !s->ctx->comp_methods)
689 j=sk_SSL_COMP_num(s->ctx->comp_methods);
693 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
697 *(p++)=0; /* Add the NULL method */
699 #ifndef OPENSSL_NO_TLSEXT
701 if (ssl_prepare_clienthello_tlsext(s) <= 0)
703 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
706 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
708 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
715 *(d++)=SSL3_MT_CLIENT_HELLO;
718 s->state=SSL3_ST_CW_CLNT_HELLO_B;
719 /* number of bytes to write */
724 /* SSL3_ST_CW_CLNT_HELLO_B */
725 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
730 int ssl3_get_server_hello(SSL *s)
732 STACK_OF(SSL_CIPHER) *sk;
738 #ifndef OPENSSL_NO_COMP
742 n=s->method->ssl_get_message(s,
743 SSL3_ST_CR_SRVR_HELLO_A,
744 SSL3_ST_CR_SRVR_HELLO_B,
749 if (!ok) return((int)n);
751 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
753 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
755 if ( s->d1->send_cookie == 0)
757 s->s3->tmp.reuse_message = 1;
760 else /* already sent a cookie */
762 al=SSL_AD_UNEXPECTED_MESSAGE;
763 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
769 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
771 al=SSL_AD_UNEXPECTED_MESSAGE;
772 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
776 d=p=(unsigned char *)s->init_msg;
778 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
780 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
781 s->version=(s->version&0xff00)|p[1];
782 al=SSL_AD_PROTOCOL_VERSION;
787 /* load the server hello data */
788 /* load the server random */
789 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
792 /* get the session-id */
795 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
797 al=SSL_AD_ILLEGAL_PARAMETER;
798 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
802 #ifndef OPENSSL_NO_TLSEXT
803 /* check if we want to resume the session based on external pre-shared secret */
804 if (s->version >= TLS1_VERSION && s->tls_session_secret_cb)
806 SSL_CIPHER *pref_cipher=NULL;
807 s->session->master_key_length=sizeof(s->session->master_key);
808 if (s->tls_session_secret_cb(s, s->session->master_key,
809 &s->session->master_key_length,
811 s->tls_session_secret_cb_arg))
813 s->session->cipher = pref_cipher ?
814 pref_cipher : ssl_get_cipher_by_char(s, p+j);
817 #endif /* OPENSSL_NO_TLSEXT */
819 if (j != 0 && j == s->session->session_id_length
820 && memcmp(p,s->session->session_id,j) == 0)
822 if(s->sid_ctx_length != s->session->sid_ctx_length
823 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
825 /* actually a client application bug */
826 al=SSL_AD_ILLEGAL_PARAMETER;
827 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
832 else /* a miss or crap from the other end */
834 /* If we were trying for session-id reuse, make a new
835 * SSL_SESSION so we don't stuff up other people */
837 if (s->session->session_id_length > 0)
839 if (!ssl_get_new_session(s,0))
841 al=SSL_AD_INTERNAL_ERROR;
845 s->session->session_id_length=j;
846 memcpy(s->session->session_id,p,j); /* j could be 0 */
849 c=ssl_get_cipher_by_char(s,p);
853 al=SSL_AD_ILLEGAL_PARAMETER;
854 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
857 p+=ssl_put_cipher_by_char(s,NULL,NULL);
859 sk=ssl_get_ciphers_by_id(s);
860 i=sk_SSL_CIPHER_find(sk,c);
863 /* we did not say we would use this cipher */
864 al=SSL_AD_ILLEGAL_PARAMETER;
865 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
869 /* Depending on the session caching (internal/external), the cipher
870 and/or cipher_id values may not be set. Make sure that
871 cipher_id is set and use it for comparison. */
872 if (s->session->cipher)
873 s->session->cipher_id = s->session->cipher->id;
874 if (s->hit && (s->session->cipher_id != c->id))
877 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
879 al=SSL_AD_ILLEGAL_PARAMETER;
880 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
884 s->s3->tmp.new_cipher=c;
885 if (!ssl3_digest_cached_records(s))
888 /* lets get the compression algorithm */
890 #ifdef OPENSSL_NO_COMP
893 al=SSL_AD_ILLEGAL_PARAMETER;
894 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
899 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
902 comp=ssl3_comp_find(s->ctx->comp_methods,j);
904 if ((j != 0) && (comp == NULL))
906 al=SSL_AD_ILLEGAL_PARAMETER;
907 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
912 s->s3->tmp.new_compression=comp;
916 #ifndef OPENSSL_NO_TLSEXT
918 if (s->version > SSL3_VERSION)
920 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
922 /* 'al' set by ssl_parse_serverhello_tlsext */
923 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
926 if (ssl_check_serverhello_tlsext(s) <= 0)
928 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
936 /* wrong packet length */
937 al=SSL_AD_DECODE_ERROR;
938 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
944 ssl3_send_alert(s,SSL3_AL_FATAL,al);
949 int ssl3_get_server_certificate(SSL *s)
952 unsigned long n,nc,llen,l;
954 const unsigned char *q,*p;
956 STACK_OF(X509) *sk=NULL;
959 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
961 n=s->method->ssl_get_message(s,
968 if (!ok) return((int)n);
970 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
972 s->s3->tmp.reuse_message=1;
976 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
978 al=SSL_AD_UNEXPECTED_MESSAGE;
979 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
982 p=d=(unsigned char *)s->init_msg;
984 if ((sk=sk_X509_new_null()) == NULL)
986 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
993 al=SSL_AD_DECODE_ERROR;
994 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
997 for (nc=0; nc<llen; )
1000 if ((l+nc+3) > llen)
1002 al=SSL_AD_DECODE_ERROR;
1003 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1008 x=d2i_X509(NULL,&q,l);
1011 al=SSL_AD_BAD_CERTIFICATE;
1012 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
1017 al=SSL_AD_DECODE_ERROR;
1018 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
1021 if (!sk_X509_push(sk,x))
1023 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
1031 i=ssl_verify_cert_chain(s,sk);
1032 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
1033 #ifndef OPENSSL_NO_KRB5
1034 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1035 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1036 #endif /* OPENSSL_NO_KRB5 */
1039 al=ssl_verify_alarm_type(s->verify_result);
1040 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1043 ERR_clear_error(); /* but we keep s->verify_result */
1045 sc=ssl_sess_cert_new();
1046 if (sc == NULL) goto err;
1048 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1049 s->session->sess_cert=sc;
1052 /* Inconsistency alert: cert_chain does include the peer's
1053 * certificate, which we don't include in s3_srvr.c */
1054 x=sk_X509_value(sk,0);
1056 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1058 pkey=X509_get_pubkey(x);
1060 /* VRS: allow null cert if auth == KRB5 */
1061 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1062 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1066 printf("pkey,x = %p, %p\n", pkey,x);
1067 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1068 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1069 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1070 #endif /* KSSL_DEBUG */
1072 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1076 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1077 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1081 i=ssl_cert_type(x,pkey);
1082 if (need_cert && i < 0)
1086 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1087 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1093 sc->peer_cert_type=i;
1094 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1095 /* Why would the following ever happen?
1096 * We just created sc a couple of lines ago. */
1097 if (sc->peer_pkeys[i].x509 != NULL)
1098 X509_free(sc->peer_pkeys[i].x509);
1099 sc->peer_pkeys[i].x509=x;
1100 sc->peer_key= &(sc->peer_pkeys[i]);
1102 if (s->session->peer != NULL)
1103 X509_free(s->session->peer);
1104 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1109 sc->peer_cert_type=i;
1112 if (s->session->peer != NULL)
1113 X509_free(s->session->peer);
1114 s->session->peer=NULL;
1116 s->session->verify_result = s->verify_result;
1124 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1127 EVP_PKEY_free(pkey);
1129 sk_X509_pop_free(sk,X509_free);
1133 int ssl3_get_key_exchange(SSL *s)
1135 #ifndef OPENSSL_NO_RSA
1136 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1139 unsigned char *param,*p;
1140 int al,i,j,param_len,ok;
1142 EVP_PKEY *pkey=NULL;
1143 #ifndef OPENSSL_NO_RSA
1146 #ifndef OPENSSL_NO_DH
1149 #ifndef OPENSSL_NO_ECDH
1150 EC_KEY *ecdh = NULL;
1151 BN_CTX *bn_ctx = NULL;
1152 EC_POINT *srvr_ecpoint = NULL;
1154 int encoded_pt_len = 0;
1157 /* use same message size as in ssl3_get_certificate_request()
1158 * as ServerKeyExchange message may be skipped */
1159 n=s->method->ssl_get_message(s,
1160 SSL3_ST_CR_KEY_EXCH_A,
1161 SSL3_ST_CR_KEY_EXCH_B,
1165 if (!ok) return((int)n);
1167 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1169 #ifndef OPENSSL_NO_PSK
1170 /* In plain PSK ciphersuite, ServerKeyExchange can be
1171 omitted if no identity hint is sent. Set
1172 session->sess_cert anyway to avoid problems
1174 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1176 s->session->sess_cert=ssl_sess_cert_new();
1177 if (s->ctx->psk_identity_hint)
1178 OPENSSL_free(s->ctx->psk_identity_hint);
1179 s->ctx->psk_identity_hint = NULL;
1182 s->s3->tmp.reuse_message=1;
1186 param=p=(unsigned char *)s->init_msg;
1187 if (s->session->sess_cert != NULL)
1189 #ifndef OPENSSL_NO_RSA
1190 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1192 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1193 s->session->sess_cert->peer_rsa_tmp=NULL;
1196 #ifndef OPENSSL_NO_DH
1197 if (s->session->sess_cert->peer_dh_tmp)
1199 DH_free(s->session->sess_cert->peer_dh_tmp);
1200 s->session->sess_cert->peer_dh_tmp=NULL;
1203 #ifndef OPENSSL_NO_ECDH
1204 if (s->session->sess_cert->peer_ecdh_tmp)
1206 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1207 s->session->sess_cert->peer_ecdh_tmp=NULL;
1213 s->session->sess_cert=ssl_sess_cert_new();
1217 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1218 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1219 EVP_MD_CTX_init(&md_ctx);
1221 #ifndef OPENSSL_NO_PSK
1222 if (alg_k & SSL_kPSK)
1224 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1226 al=SSL_AD_HANDSHAKE_FAILURE;
1229 /* Store PSK identity hint for later use, hint is used
1230 * in ssl3_send_client_key_exchange. Assume that the
1231 * maximum length of a PSK identity hint can be as
1232 * long as the maximum length of a PSK identity. */
1233 if (i > PSK_MAX_IDENTITY_LEN)
1235 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1236 SSL_R_DATA_LENGTH_TOO_LONG);
1241 al=SSL_AD_DECODE_ERROR;
1242 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1243 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1246 /* If received PSK identity hint contains NULL
1247 * characters, the hint is truncated from the first
1248 * NULL. p may not be ending with NULL, so create a
1249 * NULL-terminated string. */
1250 memcpy(tmp_id_hint, p, i);
1251 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1252 if (s->ctx->psk_identity_hint != NULL)
1253 OPENSSL_free(s->ctx->psk_identity_hint);
1254 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1255 if (s->ctx->psk_identity_hint == NULL)
1257 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1265 #endif /* !OPENSSL_NO_PSK */
1266 #ifndef OPENSSL_NO_RSA
1267 if (alg_k & SSL_kRSA)
1269 if ((rsa=RSA_new()) == NULL)
1271 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1278 al=SSL_AD_DECODE_ERROR;
1279 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1282 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1284 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1293 al=SSL_AD_DECODE_ERROR;
1294 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1297 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1299 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1305 /* this should be because we are using an export cipher */
1306 if (alg_a & SSL_aRSA)
1307 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1310 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1313 s->session->sess_cert->peer_rsa_tmp=rsa;
1316 #else /* OPENSSL_NO_RSA */
1320 #ifndef OPENSSL_NO_DH
1321 else if (alg_k & SSL_kEDH)
1323 if ((dh=DH_new()) == NULL)
1325 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1332 al=SSL_AD_DECODE_ERROR;
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1336 if (!(dh->p=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_DH_G_LENGTH);
1351 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1353 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1362 al=SSL_AD_DECODE_ERROR;
1363 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1366 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1368 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1374 #ifndef OPENSSL_NO_RSA
1375 if (alg_a & SSL_aRSA)
1376 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1381 #ifndef OPENSSL_NO_DSA
1382 else if (alg_a & SSL_aDSS)
1383 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1385 /* else anonymous DH, so no certificate or pkey. */
1387 s->session->sess_cert->peer_dh_tmp=dh;
1390 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1392 al=SSL_AD_ILLEGAL_PARAMETER;
1393 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1396 #endif /* !OPENSSL_NO_DH */
1398 #ifndef OPENSSL_NO_ECDH
1399 else if (alg_k & SSL_kEECDH)
1402 const EC_GROUP *group;
1404 if ((ecdh=EC_KEY_new()) == NULL)
1406 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1410 /* Extract elliptic curve parameters and the
1411 * server's ephemeral ECDH public key.
1412 * Keep accumulating lengths of various components in
1413 * param_len and make sure it never exceeds n.
1416 /* XXX: For now we only support named (not generic) curves
1417 * and the ECParameters in this case is just three bytes.
1420 if ((param_len > n) ||
1421 (*p != NAMED_CURVE_TYPE) ||
1422 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1424 al=SSL_AD_INTERNAL_ERROR;
1425 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1429 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1432 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1435 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1437 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1440 EC_GROUP_free(ngroup);
1442 group = EC_KEY_get0_group(ecdh);
1444 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1445 (EC_GROUP_get_degree(group) > 163))
1447 al=SSL_AD_EXPORT_RESTRICTION;
1448 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1454 /* Next, get the encoded ECPoint */
1455 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1456 ((bn_ctx = BN_CTX_new()) == NULL))
1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1462 encoded_pt_len = *p; /* length of encoded point */
1464 param_len += (1 + encoded_pt_len);
1465 if ((param_len > n) ||
1466 (EC_POINT_oct2point(group, srvr_ecpoint,
1467 p, encoded_pt_len, bn_ctx) == 0))
1469 al=SSL_AD_DECODE_ERROR;
1470 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1477 /* The ECC/TLS specification does not mention
1478 * the use of DSA to sign ECParameters in the server
1479 * key exchange message. We do support RSA and ECDSA.
1482 #ifndef OPENSSL_NO_RSA
1483 else if (alg_a & SSL_aRSA)
1484 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1486 #ifndef OPENSSL_NO_ECDSA
1487 else if (alg_a & SSL_aECDSA)
1488 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1490 /* else anonymous ECDH, so no certificate or pkey. */
1491 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1492 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1494 BN_CTX_free(bn_ctx);
1495 EC_POINT_free(srvr_ecpoint);
1496 srvr_ecpoint = NULL;
1500 al=SSL_AD_UNEXPECTED_MESSAGE;
1501 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1504 #endif /* !OPENSSL_NO_ECDH */
1507 /* p points to the next byte, there are 'n' bytes left */
1509 /* if it was signed, check the signature */
1514 j=EVP_PKEY_size(pkey);
1516 if ((i != n) || (n > j) || (n <= 0))
1518 /* wrong packet length */
1519 al=SSL_AD_DECODE_ERROR;
1520 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1524 #ifndef OPENSSL_NO_RSA
1525 if (pkey->type == EVP_PKEY_RSA)
1531 for (num=2; num > 0; num--)
1533 EVP_DigestInit_ex(&md_ctx,(num == 2)
1534 ?s->ctx->md5:s->ctx->sha1, NULL);
1535 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1536 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1537 EVP_DigestUpdate(&md_ctx,param,param_len);
1538 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1542 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1546 al=SSL_AD_DECRYPT_ERROR;
1547 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1553 al=SSL_AD_DECRYPT_ERROR;
1554 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1560 #ifndef OPENSSL_NO_DSA
1561 if (pkey->type == EVP_PKEY_DSA)
1564 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1565 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1566 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1567 EVP_VerifyUpdate(&md_ctx,param,param_len);
1568 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1571 al=SSL_AD_DECRYPT_ERROR;
1572 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1578 #ifndef OPENSSL_NO_ECDSA
1579 if (pkey->type == EVP_PKEY_EC)
1581 /* let's do ECDSA */
1582 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1583 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1584 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1585 EVP_VerifyUpdate(&md_ctx,param,param_len);
1586 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1589 al=SSL_AD_DECRYPT_ERROR;
1590 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1597 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1603 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1604 /* aNULL or kPSK do not need public keys */
1606 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1609 /* still data left over */
1612 al=SSL_AD_DECODE_ERROR;
1613 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1617 EVP_PKEY_free(pkey);
1618 EVP_MD_CTX_cleanup(&md_ctx);
1621 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1623 EVP_PKEY_free(pkey);
1624 #ifndef OPENSSL_NO_RSA
1628 #ifndef OPENSSL_NO_DH
1632 #ifndef OPENSSL_NO_ECDH
1633 BN_CTX_free(bn_ctx);
1634 EC_POINT_free(srvr_ecpoint);
1638 EVP_MD_CTX_cleanup(&md_ctx);
1642 int ssl3_get_certificate_request(SSL *s)
1645 unsigned long n,nc,l;
1646 unsigned int llen,ctype_num,i;
1648 const unsigned char *p,*q;
1650 STACK_OF(X509_NAME) *ca_sk=NULL;
1652 n=s->method->ssl_get_message(s,
1653 SSL3_ST_CR_CERT_REQ_A,
1654 SSL3_ST_CR_CERT_REQ_B,
1659 if (!ok) return((int)n);
1661 s->s3->tmp.cert_req=0;
1663 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1665 s->s3->tmp.reuse_message=1;
1669 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1671 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1672 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1676 /* TLS does not like anon-DH with client cert */
1677 if (s->version > SSL3_VERSION)
1679 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1681 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1682 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1687 p=d=(unsigned char *)s->init_msg;
1689 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1691 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1695 /* get the certificate types */
1697 if (ctype_num > SSL3_CT_NUMBER)
1698 ctype_num=SSL3_CT_NUMBER;
1699 for (i=0; i<ctype_num; i++)
1700 s->s3->tmp.ctype[i]= p[i];
1703 /* get the CA RDNs */
1708 out=fopen("/tmp/vsign.der","w");
1709 fwrite(p,1,llen,out);
1714 if ((llen+ctype_num+2+1) != n)
1716 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1717 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1721 for (nc=0; nc<llen; )
1724 if ((l+nc+2) > llen)
1726 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1727 goto cont; /* netscape bugs */
1728 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1729 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1735 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1737 /* If netscape tolerance is on, ignore errors */
1738 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1742 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1743 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1750 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1751 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1754 if (!sk_X509_NAME_push(ca_sk,xn))
1756 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1770 /* we should setup a certificate to return.... */
1771 s->s3->tmp.cert_req=1;
1772 s->s3->tmp.ctype_num=ctype_num;
1773 if (s->s3->tmp.ca_names != NULL)
1774 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1775 s->s3->tmp.ca_names=ca_sk;
1780 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1784 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1786 return(X509_NAME_cmp(*a,*b));
1788 #ifndef OPENSSL_NO_TLSEXT
1789 int ssl3_get_new_session_ticket(SSL *s)
1791 int ok,al,ret=0, ticklen;
1793 const unsigned char *p;
1796 n=s->method->ssl_get_message(s,
1797 SSL3_ST_CR_SESSION_TICKET_A,
1798 SSL3_ST_CR_SESSION_TICKET_B,
1806 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1808 s->s3->tmp.reuse_message=1;
1811 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1813 al=SSL_AD_UNEXPECTED_MESSAGE;
1814 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1819 /* need at least ticket_lifetime_hint + ticket length */
1820 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1821 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1824 p=d=(unsigned char *)s->init_msg;
1825 n2l(p, s->session->tlsext_tick_lifetime_hint);
1827 /* ticket_lifetime_hint + ticket_length + ticket */
1828 if (ticklen + 6 != n)
1830 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1831 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1834 if (s->session->tlsext_tick)
1836 OPENSSL_free(s->session->tlsext_tick);
1837 s->session->tlsext_ticklen = 0;
1839 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1840 if (!s->session->tlsext_tick)
1842 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1845 memcpy(s->session->tlsext_tick, p, ticklen);
1846 s->session->tlsext_ticklen = ticklen;
1847 /* There are two ways to detect a resumed ticket sesion.
1848 * One is to set an appropriate session ID and then the server
1849 * must return a match in ServerHello. This allows the normal
1850 * client session ID matching to work and we know much
1851 * earlier that the ticket has been accepted.
1853 * The other way is to set zero length session ID when the
1854 * ticket is presented and rely on the handshake to determine
1855 * session resumption.
1857 * We choose the former approach because this fits in with
1858 * assumptions elsewhere in OpenSSL. The session ID is set
1859 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1862 EVP_Digest(p, ticklen,
1863 s->session->session_id, &s->session->session_id_length,
1864 #ifndef OPENSSL_NO_SHA256
1865 EVP_sha256(), NULL);
1872 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1877 int ssl3_get_cert_status(SSL *s)
1880 unsigned long resplen,n;
1881 const unsigned char *p;
1883 n=s->method->ssl_get_message(s,
1884 SSL3_ST_CR_CERT_STATUS_A,
1885 SSL3_ST_CR_CERT_STATUS_B,
1886 SSL3_MT_CERTIFICATE_STATUS,
1890 if (!ok) return((int)n);
1893 /* need at least status type + length */
1894 al = SSL_AD_DECODE_ERROR;
1895 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1898 p = (unsigned char *)s->init_msg;
1899 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1901 al = SSL_AD_DECODE_ERROR;
1902 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1906 if (resplen + 4 != n)
1908 al = SSL_AD_DECODE_ERROR;
1909 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1912 if (s->tlsext_ocsp_resp)
1913 OPENSSL_free(s->tlsext_ocsp_resp);
1914 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1915 if (!s->tlsext_ocsp_resp)
1917 al = SSL_AD_INTERNAL_ERROR;
1918 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1921 s->tlsext_ocsp_resplen = resplen;
1922 if (s->ctx->tlsext_status_cb)
1925 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1928 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1929 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1934 al = SSL_AD_INTERNAL_ERROR;
1935 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1941 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1946 int ssl3_get_server_done(SSL *s)
1951 n=s->method->ssl_get_message(s,
1952 SSL3_ST_CR_SRVR_DONE_A,
1953 SSL3_ST_CR_SRVR_DONE_B,
1954 SSL3_MT_SERVER_DONE,
1955 30, /* should be very small, like 0 :-) */
1958 if (!ok) return((int)n);
1961 /* should contain no data */
1962 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1963 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1971 int ssl3_send_client_key_exchange(SSL *s)
1973 unsigned char *p,*d;
1975 unsigned long alg_k;
1976 #ifndef OPENSSL_NO_RSA
1978 EVP_PKEY *pkey=NULL;
1980 #ifndef OPENSSL_NO_KRB5
1982 #endif /* OPENSSL_NO_KRB5 */
1983 #ifndef OPENSSL_NO_ECDH
1984 EC_KEY *clnt_ecdh = NULL;
1985 const EC_POINT *srvr_ecpoint = NULL;
1986 EVP_PKEY *srvr_pub_pkey = NULL;
1987 unsigned char *encodedPoint = NULL;
1988 int encoded_pt_len = 0;
1989 BN_CTX * bn_ctx = NULL;
1992 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1994 d=(unsigned char *)s->init_buf->data;
1997 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1999 /* Fool emacs indentation */
2001 #ifndef OPENSSL_NO_RSA
2002 else if (alg_k & SSL_kRSA)
2005 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2007 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2008 rsa=s->session->sess_cert->peer_rsa_tmp;
2011 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2012 if ((pkey == NULL) ||
2013 (pkey->type != EVP_PKEY_RSA) ||
2014 (pkey->pkey.rsa == NULL))
2016 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2020 EVP_PKEY_free(pkey);
2023 tmp_buf[0]=s->client_version>>8;
2024 tmp_buf[1]=s->client_version&0xff;
2025 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2028 s->session->master_key_length=sizeof tmp_buf;
2031 /* Fix buf for TLS and beyond */
2032 if (s->version > SSL3_VERSION)
2034 n=RSA_public_encrypt(sizeof tmp_buf,
2035 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2037 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2038 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2042 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2046 /* Fix buf for TLS and beyond */
2047 if (s->version > SSL3_VERSION)
2053 s->session->master_key_length=
2054 s->method->ssl3_enc->generate_master_secret(s,
2055 s->session->master_key,
2056 tmp_buf,sizeof tmp_buf);
2057 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2060 #ifndef OPENSSL_NO_KRB5
2061 else if (alg_k & SSL_kKRB5)
2063 krb5_error_code krb5rc;
2064 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2065 /* krb5_data krb5_ap_req; */
2066 krb5_data *enc_ticket;
2067 krb5_data authenticator, *authp = NULL;
2068 EVP_CIPHER_CTX ciph_ctx;
2069 const EVP_CIPHER *enc = NULL;
2070 unsigned char iv[EVP_MAX_IV_LENGTH];
2071 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2072 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2073 + EVP_MAX_IV_LENGTH];
2074 int padl, outl = sizeof(epms);
2076 EVP_CIPHER_CTX_init(&ciph_ctx);
2079 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2081 #endif /* KSSL_DEBUG */
2085 if (KRB5SENDAUTH) authp = &authenticator;
2086 #endif /* KRB5SENDAUTH */
2088 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2090 enc = kssl_map_enc(kssl_ctx->enctype);
2095 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2096 if (krb5rc && kssl_err.text)
2097 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2099 #endif /* KSSL_DEBUG */
2103 ssl3_send_alert(s,SSL3_AL_FATAL,
2104 SSL_AD_HANDSHAKE_FAILURE);
2105 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2110 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2111 ** in place of RFC 2712 KerberosWrapper, as in:
2113 ** Send ticket (copy to *p, set n = length)
2114 ** n = krb5_ap_req.length;
2115 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2116 ** if (krb5_ap_req.data)
2117 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2119 ** Now using real RFC 2712 KerberosWrapper
2120 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2121 ** Note: 2712 "opaque" types are here replaced
2122 ** with a 2-byte length followed by the value.
2124 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2125 ** Where "xx xx" = length bytes. Shown here with
2126 ** optional authenticator omitted.
2129 /* KerberosWrapper.Ticket */
2130 s2n(enc_ticket->length,p);
2131 memcpy(p, enc_ticket->data, enc_ticket->length);
2132 p+= enc_ticket->length;
2133 n = enc_ticket->length + 2;
2135 /* KerberosWrapper.Authenticator */
2136 if (authp && authp->length)
2138 s2n(authp->length,p);
2139 memcpy(p, authp->data, authp->length);
2141 n+= authp->length + 2;
2149 s2n(0,p);/* null authenticator length */
2153 tmp_buf[0]=s->client_version>>8;
2154 tmp_buf[1]=s->client_version&0xff;
2155 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2158 /* 20010420 VRS. Tried it this way; failed.
2159 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2160 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2161 ** kssl_ctx->length);
2162 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2165 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2166 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2168 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2170 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2172 if (outl > (int)sizeof epms)
2174 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2177 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2179 /* KerberosWrapper.EncryptedPreMasterSecret */
2181 memcpy(p, epms, outl);
2185 s->session->master_key_length=
2186 s->method->ssl3_enc->generate_master_secret(s,
2187 s->session->master_key,
2188 tmp_buf, sizeof tmp_buf);
2190 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2191 OPENSSL_cleanse(epms, outl);
2194 #ifndef OPENSSL_NO_DH
2195 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2197 DH *dh_srvr,*dh_clnt;
2199 if (s->session->sess_cert == NULL)
2201 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2202 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2206 if (s->session->sess_cert->peer_dh_tmp != NULL)
2207 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2210 /* we get them from the cert */
2211 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2212 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2216 /* generate a new random key */
2217 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2219 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2222 if (!DH_generate_key(dh_clnt))
2224 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2228 /* use the 'p' output buffer for the DH key, but
2229 * make sure to clear it out afterwards */
2231 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2235 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2239 /* generate master key from the result */
2240 s->session->master_key_length=
2241 s->method->ssl3_enc->generate_master_secret(s,
2242 s->session->master_key,p,n);
2246 /* send off the data */
2247 n=BN_num_bytes(dh_clnt->pub_key);
2249 BN_bn2bin(dh_clnt->pub_key,p);
2254 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2258 #ifndef OPENSSL_NO_ECDH
2259 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2261 const EC_GROUP *srvr_group = NULL;
2263 int ecdh_clnt_cert = 0;
2266 /* Did we send out the client's
2267 * ECDH share for use in premaster
2268 * computation as part of client certificate?
2269 * If so, set ecdh_clnt_cert to 1.
2271 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2273 /* XXX: For now, we do not support client
2274 * authentication using ECDH certificates.
2275 * To add such support, one needs to add
2276 * code that checks for appropriate
2277 * conditions and sets ecdh_clnt_cert to 1.
2278 * For example, the cert have an ECC
2279 * key on the same curve as the server's
2280 * and the key should be authorized for
2283 * One also needs to add code in ssl3_connect
2284 * to skip sending the certificate verify
2287 * if ((s->cert->key->privatekey != NULL) &&
2288 * (s->cert->key->privatekey->type ==
2289 * EVP_PKEY_EC) && ...)
2290 * ecdh_clnt_cert = 1;
2294 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2296 tkey = s->session->sess_cert->peer_ecdh_tmp;
2300 /* Get the Server Public Key from Cert */
2301 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2302 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2303 if ((srvr_pub_pkey == NULL) ||
2304 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2305 (srvr_pub_pkey->pkey.ec == NULL))
2307 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2308 ERR_R_INTERNAL_ERROR);
2312 tkey = srvr_pub_pkey->pkey.ec;
2315 srvr_group = EC_KEY_get0_group(tkey);
2316 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2318 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2320 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2321 ERR_R_INTERNAL_ERROR);
2325 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2327 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2331 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2333 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2338 /* Reuse key info from our certificate
2339 * We only need our private key to perform
2340 * the ECDH computation.
2342 const BIGNUM *priv_key;
2343 tkey = s->cert->key->privatekey->pkey.ec;
2344 priv_key = EC_KEY_get0_private_key(tkey);
2345 if (priv_key == NULL)
2347 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2350 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2352 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2358 /* Generate a new ECDH key pair */
2359 if (!(EC_KEY_generate_key(clnt_ecdh)))
2361 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2366 /* use the 'p' output buffer for the ECDH key, but
2367 * make sure to clear it out afterwards
2370 field_size = EC_GROUP_get_degree(srvr_group);
2371 if (field_size <= 0)
2373 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2377 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2380 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2385 /* generate master key from the result */
2386 s->session->master_key_length = s->method->ssl3_enc \
2387 -> generate_master_secret(s,
2388 s->session->master_key,
2391 memset(p, 0, n); /* clean up */
2395 /* Send empty client key exch message */
2400 /* First check the size of encoding and
2401 * allocate memory accordingly.
2404 EC_POINT_point2oct(srvr_group,
2405 EC_KEY_get0_public_key(clnt_ecdh),
2406 POINT_CONVERSION_UNCOMPRESSED,
2409 encodedPoint = (unsigned char *)
2410 OPENSSL_malloc(encoded_pt_len *
2411 sizeof(unsigned char));
2412 bn_ctx = BN_CTX_new();
2413 if ((encodedPoint == NULL) ||
2416 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2420 /* Encode the public key */
2421 n = EC_POINT_point2oct(srvr_group,
2422 EC_KEY_get0_public_key(clnt_ecdh),
2423 POINT_CONVERSION_UNCOMPRESSED,
2424 encodedPoint, encoded_pt_len, bn_ctx);
2426 *p = n; /* length of encoded point */
2427 /* Encoded point will be copied here */
2429 /* copy the point */
2430 memcpy((unsigned char *)p, encodedPoint, n);
2431 /* increment n to account for length field */
2435 /* Free allocated memory */
2436 BN_CTX_free(bn_ctx);
2437 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2438 if (clnt_ecdh != NULL)
2439 EC_KEY_free(clnt_ecdh);
2440 EVP_PKEY_free(srvr_pub_pkey);
2442 #endif /* !OPENSSL_NO_ECDH */
2443 else if (alg_k & SSL_kGOST)
2445 /* GOST key exchange message creation */
2446 EVP_PKEY_CTX *pkey_ctx;
2449 unsigned int md_len;
2451 unsigned char premaster_secret[32],shared_ukm[32], tmp[256];
2452 EVP_MD_CTX *ukm_hash;
2455 /* Get server sertificate PKEY and create ctx from it */
2456 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2458 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2460 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2464 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2465 /* If we have send a certificate, and certificate key
2467 * parameters match those of server certificate, use
2468 * certificate key for key exchange
2471 /* Otherwise, generate ephemeral key pair */
2473 EVP_PKEY_encrypt_init(pkey_ctx);
2474 /* Generate session key */
2475 RAND_bytes(premaster_secret,32);
2476 /* If we have client certificate, use its secret as peer key */
2477 if (s->s3->tmp.cert_req && s->cert->key->privatekey) {
2478 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) {
2479 /* If there was an error - just ignore it. Ephemeral key
2485 /* Compute shared IV and store it in algorithm-specific
2487 ukm_hash = EVP_MD_CTX_create();
2488 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2489 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2490 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2491 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2492 EVP_MD_CTX_destroy(ukm_hash);
2493 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2495 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2499 /* Make GOST keytransport blob message */
2500 /*Encapsulate it into sequence */
2501 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2503 if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) {
2504 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2511 *(p++)= msglen & 0xff;
2516 *(p++)= msglen & 0xff;
2519 memcpy(p, tmp, msglen);
2520 /* Check if pubkey from client certificate was used */
2521 if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0)
2523 /* Set flag "skip certificate verify" */
2524 s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY;
2526 EVP_PKEY_CTX_free(pkey_ctx);
2527 s->session->master_key_length=
2528 s->method->ssl3_enc->generate_master_secret(s,
2529 s->session->master_key,premaster_secret,32);
2530 EVP_PKEY_free(pub_key);
2533 #ifndef OPENSSL_NO_PSK
2534 else if (alg_k & SSL_kPSK)
2536 char identity[PSK_MAX_IDENTITY_LEN];
2537 unsigned char *t = NULL;
2538 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2539 unsigned int pre_ms_len = 0, psk_len = 0;
2543 if (s->psk_client_callback == NULL)
2545 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2546 SSL_R_PSK_NO_CLIENT_CB);
2550 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2551 identity, PSK_MAX_IDENTITY_LEN,
2552 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2553 if (psk_len > PSK_MAX_PSK_LEN)
2555 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2556 ERR_R_INTERNAL_ERROR);
2559 else if (psk_len == 0)
2561 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2562 SSL_R_PSK_IDENTITY_NOT_FOUND);
2566 /* create PSK pre_master_secret */
2567 pre_ms_len = 2+psk_len+2+psk_len;
2569 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2571 memset(t, 0, psk_len);
2575 if (s->session->psk_identity_hint != NULL)
2576 OPENSSL_free(s->session->psk_identity_hint);
2577 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2578 if (s->ctx->psk_identity_hint != NULL &&
2579 s->session->psk_identity_hint == NULL)
2581 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2582 ERR_R_MALLOC_FAILURE);
2586 if (s->session->psk_identity != NULL)
2587 OPENSSL_free(s->session->psk_identity);
2588 s->session->psk_identity = BUF_strdup(identity);
2589 if (s->session->psk_identity == NULL)
2591 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2592 ERR_R_MALLOC_FAILURE);
2596 s->session->master_key_length =
2597 s->method->ssl3_enc->generate_master_secret(s,
2598 s->session->master_key,
2599 psk_or_pre_ms, pre_ms_len);
2600 n = strlen(identity);
2602 memcpy(p, identity, n);
2606 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2607 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2610 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2617 ssl3_send_alert(s, SSL3_AL_FATAL,
2618 SSL_AD_HANDSHAKE_FAILURE);
2619 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2620 ERR_R_INTERNAL_ERROR);
2624 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2627 s->state=SSL3_ST_CW_KEY_EXCH_B;
2628 /* number of bytes to write */
2633 /* SSL3_ST_CW_KEY_EXCH_B */
2634 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2636 #ifndef OPENSSL_NO_ECDH
2637 BN_CTX_free(bn_ctx);
2638 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2639 if (clnt_ecdh != NULL)
2640 EC_KEY_free(clnt_ecdh);
2641 EVP_PKEY_free(srvr_pub_pkey);
2646 int ssl3_send_client_verify(SSL *s)
2648 unsigned char *p,*d;
2649 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2651 EVP_PKEY_CTX *pctx=NULL;
2652 #ifndef OPENSSL_NO_RSA
2656 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2660 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2662 d=(unsigned char *)s->init_buf->data;
2664 pkey=s->cert->key->privatekey;
2665 /* Create context from key and test if sha1 is allowed as digest */
2666 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2667 EVP_PKEY_sign_init(pctx);
2668 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2670 s->method->ssl3_enc->cert_verify_mac(s,
2672 &(data[MD5_DIGEST_LENGTH]));
2678 #ifndef OPENSSL_NO_RSA
2679 if (pkey->type == EVP_PKEY_RSA)
2681 s->method->ssl3_enc->cert_verify_mac(s,
2684 if (RSA_sign(NID_md5_sha1, data,
2685 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2686 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2688 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2696 #ifndef OPENSSL_NO_DSA
2697 if (pkey->type == EVP_PKEY_DSA)
2699 if (!DSA_sign(pkey->save_type,
2700 &(data[MD5_DIGEST_LENGTH]),
2701 SHA_DIGEST_LENGTH,&(p[2]),
2702 (unsigned int *)&j,pkey->pkey.dsa))
2704 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2712 #ifndef OPENSSL_NO_ECDSA
2713 if (pkey->type == EVP_PKEY_EC)
2715 if (!ECDSA_sign(pkey->save_type,
2716 &(data[MD5_DIGEST_LENGTH]),
2717 SHA_DIGEST_LENGTH,&(p[2]),
2718 (unsigned int *)&j,pkey->pkey.ec))
2720 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2729 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2731 unsigned char signbuf[64];
2734 s->method->ssl3_enc->cert_verify_mac(s,
2735 NID_id_GostR3411_94,
2737 if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) {
2738 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2739 ERR_R_INTERNAL_ERROR);
2742 for (i=63,j=0; i>=0; j++, i--) {
2750 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2753 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2756 s->state=SSL3_ST_CW_CERT_VRFY_B;
2757 s->init_num=(int)n+4;
2760 EVP_PKEY_CTX_free(pctx);
2761 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2763 EVP_PKEY_CTX_free(pctx);
2767 int ssl3_send_client_certificate(SSL *s)
2770 EVP_PKEY *pkey=NULL;
2774 if (s->state == SSL3_ST_CW_CERT_A)
2776 if ((s->cert == NULL) ||
2777 (s->cert->key->x509 == NULL) ||
2778 (s->cert->key->privatekey == NULL))
2779 s->state=SSL3_ST_CW_CERT_B;
2781 s->state=SSL3_ST_CW_CERT_C;
2784 /* We need to get a client cert */
2785 if (s->state == SSL3_ST_CW_CERT_B)
2787 /* If we get an error, we need to
2788 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2789 * We then get retied later */
2791 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2794 s->rwstate=SSL_X509_LOOKUP;
2797 s->rwstate=SSL_NOTHING;
2798 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2800 s->state=SSL3_ST_CW_CERT_B;
2801 if ( !SSL_use_certificate(s,x509) ||
2802 !SSL_use_PrivateKey(s,pkey))
2808 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2811 if (x509 != NULL) X509_free(x509);
2812 if (pkey != NULL) EVP_PKEY_free(pkey);
2815 if (s->version == SSL3_VERSION)
2817 s->s3->tmp.cert_req=0;
2818 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2823 s->s3->tmp.cert_req=2;
2827 /* Ok, we have a cert */
2828 s->state=SSL3_ST_CW_CERT_C;
2831 if (s->state == SSL3_ST_CW_CERT_C)
2833 s->state=SSL3_ST_CW_CERT_D;
2834 l=ssl3_output_cert_chain(s,
2835 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2839 /* SSL3_ST_CW_CERT_D */
2840 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2843 #define has_bits(i,m) (((i)&(m)) == (m))
2845 int ssl3_check_cert_and_algorithm(SSL *s)
2849 EVP_PKEY *pkey=NULL;
2851 #ifndef OPENSSL_NO_RSA
2854 #ifndef OPENSSL_NO_DH
2858 sc=s->session->sess_cert;
2861 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2865 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2866 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2868 /* we don't have a certificate */
2869 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2872 #ifndef OPENSSL_NO_RSA
2873 rsa=s->session->sess_cert->peer_rsa_tmp;
2875 #ifndef OPENSSL_NO_DH
2876 dh=s->session->sess_cert->peer_dh_tmp;
2879 /* This is the passed certificate */
2881 idx=sc->peer_cert_type;
2882 #ifndef OPENSSL_NO_ECDH
2883 if (idx == SSL_PKEY_ECC)
2885 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2886 s->s3->tmp.new_cipher) == 0)
2887 { /* check failed */
2888 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2897 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2898 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2899 EVP_PKEY_free(pkey);
2902 /* Check that we have a certificate if we require one */
2903 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2905 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2908 #ifndef OPENSSL_NO_DSA
2909 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2911 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2915 #ifndef OPENSSL_NO_RSA
2916 if ((alg_k & SSL_kRSA) &&
2917 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2919 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2923 #ifndef OPENSSL_NO_DH
2924 if ((alg_k & SSL_kEDH) &&
2925 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2927 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2930 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2932 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2935 #ifndef OPENSSL_NO_DSA
2936 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2938 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2944 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2946 #ifndef OPENSSL_NO_RSA
2947 if (alg_k & SSL_kRSA)
2950 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2952 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2958 #ifndef OPENSSL_NO_DH
2959 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2962 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2964 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2971 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2977 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2982 /* Check to see if handshake is full or resumed. Usually this is just a
2983 * case of checking to see if a cache hit has occurred. In the case of
2984 * session tickets we have to check the next message to be sure.
2987 #ifndef OPENSSL_NO_TLSEXT
2988 static int ssl3_check_finished(SSL *s)
2992 /* If we have no ticket it cannot be a resumed session. */
2993 if (!s->session->tlsext_tick)
2995 /* this function is called when we really expect a Certificate
2996 * message, so permit appropriate message length */
2997 n=s->method->ssl_get_message(s,
3003 if (!ok) return((int)n);
3004 s->s3->tmp.reuse_message = 1;
3005 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
3006 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
3013 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
3016 #ifndef OPENSSL_NO_ENGINE
3017 if (s->ctx->client_cert_engine)
3019 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
3020 SSL_get_client_CA_list(s),
3021 px509, ppkey, NULL, NULL, NULL);
3026 if (s->ctx->client_cert_cb)
3027 i = s->ctx->client_cert_cb(s,px509,ppkey);