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>
164 static const SSL_METHOD *ssl3_get_client_method(int ver);
165 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
166 #ifndef OPENSSL_NO_TLSEXT
167 static int ssl3_check_finished(SSL *s);
170 static const SSL_METHOD *ssl3_get_client_method(int ver)
172 if (ver == SSL3_VERSION)
173 return(SSLv3_client_method());
178 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
179 ssl_undefined_function,
181 ssl3_get_client_method)
183 int ssl3_connect(SSL *s)
186 unsigned long Time=(unsigned long)time(NULL);
188 void (*cb)(const SSL *ssl,int type,int val)=NULL;
190 int new_state,state,skip=0;;
192 RAND_add(&Time,sizeof(Time),0);
196 if (s->info_callback != NULL)
198 else if (s->ctx->info_callback != NULL)
199 cb=s->ctx->info_callback;
202 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
210 case SSL_ST_RENEGOTIATE:
212 s->state=SSL_ST_CONNECT;
213 s->ctx->stats.sess_connect_renegotiate++;
217 case SSL_ST_BEFORE|SSL_ST_CONNECT:
218 case SSL_ST_OK|SSL_ST_CONNECT:
221 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
223 if ((s->version & 0xff00 ) != 0x0300)
225 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
230 /* s->version=SSL3_VERSION; */
231 s->type=SSL_ST_CONNECT;
233 if (s->init_buf == NULL)
235 if ((buf=BUF_MEM_new()) == NULL)
240 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
249 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
251 /* setup buffing BIO */
252 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
254 /* don't push the buffering BIO quite yet */
256 ssl3_init_finished_mac(s);
258 s->state=SSL3_ST_CW_CLNT_HELLO_A;
259 s->ctx->stats.sess_connect++;
263 case SSL3_ST_CW_CLNT_HELLO_A:
264 case SSL3_ST_CW_CLNT_HELLO_B:
267 ret=ssl3_client_hello(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CR_SRVR_HELLO_A;
272 /* turn on buffering for the next lot of output */
273 if (s->bbio != s->wbio)
274 s->wbio=BIO_push(s->bbio,s->wbio);
278 case SSL3_ST_CR_SRVR_HELLO_A:
279 case SSL3_ST_CR_SRVR_HELLO_B:
280 ret=ssl3_get_server_hello(s);
281 if (ret <= 0) goto end;
284 s->state=SSL3_ST_CR_FINISHED_A;
286 s->state=SSL3_ST_CR_CERT_A;
290 case SSL3_ST_CR_CERT_A:
291 case SSL3_ST_CR_CERT_B:
292 #ifndef OPENSSL_NO_TLSEXT
293 ret=ssl3_check_finished(s);
294 if (ret <= 0) goto end;
298 s->state=SSL3_ST_CR_FINISHED_A;
303 /* Check if it is anon DH/ECDH */
305 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
306 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
308 ret=ssl3_get_server_certificate(s);
309 if (ret <= 0) goto end;
313 s->state=SSL3_ST_CR_KEY_EXCH_A;
317 case SSL3_ST_CR_KEY_EXCH_A:
318 case SSL3_ST_CR_KEY_EXCH_B:
319 ret=ssl3_get_key_exchange(s);
320 if (ret <= 0) goto end;
321 s->state=SSL3_ST_CR_CERT_REQ_A;
324 /* at this point we check that we have the
325 * required stuff from the server */
326 if (!ssl3_check_cert_and_algorithm(s))
333 case SSL3_ST_CR_CERT_REQ_A:
334 case SSL3_ST_CR_CERT_REQ_B:
335 ret=ssl3_get_certificate_request(s);
336 if (ret <= 0) goto end;
337 s->state=SSL3_ST_CR_SRVR_DONE_A;
341 case SSL3_ST_CR_SRVR_DONE_A:
342 case SSL3_ST_CR_SRVR_DONE_B:
343 ret=ssl3_get_server_done(s);
344 if (ret <= 0) goto end;
345 if (s->s3->tmp.cert_req)
346 s->state=SSL3_ST_CW_CERT_A;
348 s->state=SSL3_ST_CW_KEY_EXCH_A;
353 case SSL3_ST_CW_CERT_A:
354 case SSL3_ST_CW_CERT_B:
355 case SSL3_ST_CW_CERT_C:
356 case SSL3_ST_CW_CERT_D:
357 ret=ssl3_send_client_certificate(s);
358 if (ret <= 0) goto end;
359 s->state=SSL3_ST_CW_KEY_EXCH_A;
363 case SSL3_ST_CW_KEY_EXCH_A:
364 case SSL3_ST_CW_KEY_EXCH_B:
365 ret=ssl3_send_client_key_exchange(s);
366 if (ret <= 0) goto end;
367 /* EAY EAY EAY need to check for DH fix cert
369 /* For TLS, cert_req is set to 2, so a cert chain
370 * of nothing is sent, but no verify packet is sent */
371 /* XXX: For now, we do not support client
372 * authentication in ECDH cipher suites with
373 * ECDH (rather than ECDSA) certificates.
374 * We need to skip the certificate verify
375 * message when client's ECDH public key is sent
376 * inside the client certificate.
378 if (s->s3->tmp.cert_req == 1)
380 s->state=SSL3_ST_CW_CERT_VRFY_A;
384 s->state=SSL3_ST_CW_CHANGE_A;
385 s->s3->change_cipher_spec=0;
391 case SSL3_ST_CW_CERT_VRFY_A:
392 case SSL3_ST_CW_CERT_VRFY_B:
393 ret=ssl3_send_client_verify(s);
394 if (ret <= 0) goto end;
395 s->state=SSL3_ST_CW_CHANGE_A;
397 s->s3->change_cipher_spec=0;
400 case SSL3_ST_CW_CHANGE_A:
401 case SSL3_ST_CW_CHANGE_B:
402 ret=ssl3_send_change_cipher_spec(s,
403 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
404 if (ret <= 0) goto end;
405 s->state=SSL3_ST_CW_FINISHED_A;
408 s->session->cipher=s->s3->tmp.new_cipher;
409 #ifdef OPENSSL_NO_COMP
410 s->session->compress_meth=0;
412 if (s->s3->tmp.new_compression == NULL)
413 s->session->compress_meth=0;
415 s->session->compress_meth=
416 s->s3->tmp.new_compression->id;
418 if (!s->method->ssl3_enc->setup_key_block(s))
424 if (!s->method->ssl3_enc->change_cipher_state(s,
425 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
433 case SSL3_ST_CW_FINISHED_A:
434 case SSL3_ST_CW_FINISHED_B:
435 ret=ssl3_send_finished(s,
436 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
437 s->method->ssl3_enc->client_finished_label,
438 s->method->ssl3_enc->client_finished_label_len);
439 if (ret <= 0) goto end;
440 s->state=SSL3_ST_CW_FLUSH;
443 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
446 s->s3->tmp.next_state=SSL_ST_OK;
447 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
450 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
451 s->s3->delay_buf_pop_ret=0;
456 #ifndef OPENSSL_NO_TLSEXT
457 /* Allow NewSessionTicket if ticket expected */
458 if (s->tlsext_ticket_expected)
459 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
463 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
468 #ifndef OPENSSL_NO_TLSEXT
469 case SSL3_ST_CR_SESSION_TICKET_A:
470 case SSL3_ST_CR_SESSION_TICKET_B:
471 ret=ssl3_get_new_session_ticket(s);
472 s->state=SSL3_ST_CR_FINISHED_A;
477 case SSL3_ST_CR_FINISHED_A:
478 case SSL3_ST_CR_FINISHED_B:
480 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
481 SSL3_ST_CR_FINISHED_B);
482 if (ret <= 0) goto end;
485 s->state=SSL3_ST_CW_CHANGE_A;
491 case SSL3_ST_CW_FLUSH:
492 /* number of bytes to be flushed */
493 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
496 s->rwstate=SSL_WRITING;
497 num1=BIO_flush(s->wbio);
498 if (num1 <= 0) { ret= -1; goto end; }
499 s->rwstate=SSL_NOTHING;
502 s->state=s->s3->tmp.next_state;
506 /* clean a few things up */
507 ssl3_cleanup_key_block(s);
509 if (s->init_buf != NULL)
511 BUF_MEM_free(s->init_buf);
515 /* If we are not 'joining' the last two packets,
516 * remove the buffering now */
517 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
518 ssl_free_wbio_buffer(s);
519 /* else do it later in ssl3_write */
524 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
525 if (s->hit) s->ctx->stats.sess_hit++;
529 s->handshake_func=ssl3_connect;
530 s->ctx->stats.sess_connect_good++;
532 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
538 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
544 /* did we do anything */
545 if (!s->s3->tmp.reuse_message && !skip)
549 if ((ret=BIO_flush(s->wbio)) <= 0)
553 if ((cb != NULL) && (s->state != state))
557 cb(s,SSL_CB_CONNECT_LOOP,1);
568 cb(s,SSL_CB_CONNECT_EXIT,ret);
573 int ssl3_client_hello(SSL *s)
578 unsigned long Time,l;
579 #ifndef OPENSSL_NO_COMP
584 buf=(unsigned char *)s->init_buf->data;
585 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
587 if ((s->session == NULL) ||
588 (s->session->ssl_version != s->version) ||
589 (s->session->not_resumable))
591 if (!ssl_get_new_session(s,0))
594 /* else use the pre-loaded session */
596 p=s->s3->client_random;
597 Time=(unsigned long)time(NULL); /* Time */
599 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
602 /* Do the message type and length last */
605 *(p++)=s->version>>8;
606 *(p++)=s->version&0xff;
607 s->client_version=s->version;
610 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
617 i=s->session->session_id_length;
621 if (i > (int)sizeof(s->session->session_id))
623 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
626 memcpy(p,s->session->session_id,i);
630 /* Ciphers supported */
631 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
634 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
641 #ifdef OPENSSL_NO_COMP
645 if ((s->options & SSL_OP_NO_COMPRESSION)
646 || !s->ctx->comp_methods)
649 j=sk_SSL_COMP_num(s->ctx->comp_methods);
653 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
657 *(p++)=0; /* Add the NULL method */
658 #ifndef OPENSSL_NO_TLSEXT
659 if (ssl_prepare_clienthello_tlsext(s) <= 0)
661 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
664 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
666 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
673 *(d++)=SSL3_MT_CLIENT_HELLO;
676 s->state=SSL3_ST_CW_CLNT_HELLO_B;
677 /* number of bytes to write */
682 /* SSL3_ST_CW_CLNT_HELLO_B */
683 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
688 int ssl3_get_server_hello(SSL *s)
690 STACK_OF(SSL_CIPHER) *sk;
696 #ifndef OPENSSL_NO_COMP
700 n=s->method->ssl_get_message(s,
701 SSL3_ST_CR_SRVR_HELLO_A,
702 SSL3_ST_CR_SRVR_HELLO_B,
707 if (!ok) return((int)n);
709 if ( SSL_version(s) == DTLS1_VERSION)
711 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
713 if ( s->d1->send_cookie == 0)
715 s->s3->tmp.reuse_message = 1;
718 else /* already sent a cookie */
720 al=SSL_AD_UNEXPECTED_MESSAGE;
721 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
727 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
729 al=SSL_AD_UNEXPECTED_MESSAGE;
730 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
734 d=p=(unsigned char *)s->init_msg;
736 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
738 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
739 s->version=(s->version&0xff00)|p[1];
740 al=SSL_AD_PROTOCOL_VERSION;
745 /* load the server hello data */
746 /* load the server random */
747 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
750 /* get the session-id */
753 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
755 al=SSL_AD_ILLEGAL_PARAMETER;
756 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
760 if (j != 0 && j == s->session->session_id_length
761 && memcmp(p,s->session->session_id,j) == 0)
763 if(s->sid_ctx_length != s->session->sid_ctx_length
764 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
766 /* actually a client application bug */
767 al=SSL_AD_ILLEGAL_PARAMETER;
768 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
773 else /* a miss or crap from the other end */
775 /* If we were trying for session-id reuse, make a new
776 * SSL_SESSION so we don't stuff up other people */
778 if (s->session->session_id_length > 0)
780 if (!ssl_get_new_session(s,0))
782 al=SSL_AD_INTERNAL_ERROR;
786 s->session->session_id_length=j;
787 memcpy(s->session->session_id,p,j); /* j could be 0 */
790 c=ssl_get_cipher_by_char(s,p);
794 al=SSL_AD_ILLEGAL_PARAMETER;
795 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
798 p+=ssl_put_cipher_by_char(s,NULL,NULL);
800 sk=ssl_get_ciphers_by_id(s);
801 i=sk_SSL_CIPHER_find(sk,c);
804 /* we did not say we would use this cipher */
805 al=SSL_AD_ILLEGAL_PARAMETER;
806 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
810 /* Depending on the session caching (internal/external), the cipher
811 and/or cipher_id values may not be set. Make sure that
812 cipher_id is set and use it for comparison. */
813 if (s->session->cipher)
814 s->session->cipher_id = s->session->cipher->id;
815 if (s->hit && (s->session->cipher_id != c->id))
818 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
820 al=SSL_AD_ILLEGAL_PARAMETER;
821 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
825 s->s3->tmp.new_cipher=c;
827 /* lets get the compression algorithm */
829 #ifdef OPENSSL_NO_COMP
832 al=SSL_AD_ILLEGAL_PARAMETER;
833 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
838 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
841 comp=ssl3_comp_find(s->ctx->comp_methods,j);
843 if ((j != 0) && (comp == NULL))
845 al=SSL_AD_ILLEGAL_PARAMETER;
846 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
851 s->s3->tmp.new_compression=comp;
854 #ifndef OPENSSL_NO_TLSEXT
856 if (s->version > SSL3_VERSION)
858 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
860 /* 'al' set by ssl_parse_serverhello_tlsext */
861 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
864 if (ssl_check_serverhello_tlsext(s) <= 0)
866 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
874 /* wrong packet length */
875 al=SSL_AD_DECODE_ERROR;
876 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
882 ssl3_send_alert(s,SSL3_AL_FATAL,al);
887 int ssl3_get_server_certificate(SSL *s)
890 unsigned long n,nc,llen,l;
892 const unsigned char *q,*p;
894 STACK_OF(X509) *sk=NULL;
897 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
899 n=s->method->ssl_get_message(s,
906 if (!ok) return((int)n);
908 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
910 s->s3->tmp.reuse_message=1;
914 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
916 al=SSL_AD_UNEXPECTED_MESSAGE;
917 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
920 p=d=(unsigned char *)s->init_msg;
922 if ((sk=sk_X509_new_null()) == NULL)
924 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
931 al=SSL_AD_DECODE_ERROR;
932 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
935 for (nc=0; nc<llen; )
940 al=SSL_AD_DECODE_ERROR;
941 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
946 x=d2i_X509(NULL,&q,l);
949 al=SSL_AD_BAD_CERTIFICATE;
950 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
955 al=SSL_AD_DECODE_ERROR;
956 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
959 if (!sk_X509_push(sk,x))
961 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
969 i=ssl_verify_cert_chain(s,sk);
970 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
971 #ifndef OPENSSL_NO_KRB5
972 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
973 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
974 #endif /* OPENSSL_NO_KRB5 */
977 al=ssl_verify_alarm_type(s->verify_result);
978 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
981 ERR_clear_error(); /* but we keep s->verify_result */
983 sc=ssl_sess_cert_new();
984 if (sc == NULL) goto err;
986 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
987 s->session->sess_cert=sc;
990 /* Inconsistency alert: cert_chain does include the peer's
991 * certificate, which we don't include in s3_srvr.c */
992 x=sk_X509_value(sk,0);
994 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
996 pkey=X509_get_pubkey(x);
998 /* VRS: allow null cert if auth == KRB5 */
999 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1000 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1004 printf("pkey,x = %p, %p\n", pkey,x);
1005 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1006 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1007 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1008 #endif /* KSSL_DEBUG */
1010 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1014 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1015 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1019 i=ssl_cert_type(x,pkey);
1020 if (need_cert && i < 0)
1024 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1025 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1031 sc->peer_cert_type=i;
1032 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1033 /* Why would the following ever happen?
1034 * We just created sc a couple of lines ago. */
1035 if (sc->peer_pkeys[i].x509 != NULL)
1036 X509_free(sc->peer_pkeys[i].x509);
1037 sc->peer_pkeys[i].x509=x;
1038 sc->peer_key= &(sc->peer_pkeys[i]);
1040 if (s->session->peer != NULL)
1041 X509_free(s->session->peer);
1042 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1047 sc->peer_cert_type=i;
1050 if (s->session->peer != NULL)
1051 X509_free(s->session->peer);
1052 s->session->peer=NULL;
1054 s->session->verify_result = s->verify_result;
1062 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1065 EVP_PKEY_free(pkey);
1067 sk_X509_pop_free(sk,X509_free);
1071 int ssl3_get_key_exchange(SSL *s)
1073 #ifndef OPENSSL_NO_RSA
1074 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1077 unsigned char *param,*p;
1078 int al,i,j,param_len,ok;
1080 EVP_PKEY *pkey=NULL;
1081 #ifndef OPENSSL_NO_RSA
1084 #ifndef OPENSSL_NO_DH
1087 #ifndef OPENSSL_NO_ECDH
1088 EC_KEY *ecdh = NULL;
1089 BN_CTX *bn_ctx = NULL;
1090 EC_POINT *srvr_ecpoint = NULL;
1092 int encoded_pt_len = 0;
1095 /* use same message size as in ssl3_get_certificate_request()
1096 * as ServerKeyExchange message may be skipped */
1097 n=s->method->ssl_get_message(s,
1098 SSL3_ST_CR_KEY_EXCH_A,
1099 SSL3_ST_CR_KEY_EXCH_B,
1103 if (!ok) return((int)n);
1105 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1107 #ifndef OPENSSL_NO_PSK
1108 /* In plain PSK ciphersuite, ServerKeyExchange can be
1109 omitted if no identity hint is sent. Set
1110 session->sess_cert anyway to avoid problems
1112 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1114 s->session->sess_cert=ssl_sess_cert_new();
1115 if (s->ctx->psk_identity_hint)
1116 OPENSSL_free(s->ctx->psk_identity_hint);
1117 s->ctx->psk_identity_hint = NULL;
1120 s->s3->tmp.reuse_message=1;
1124 param=p=(unsigned char *)s->init_msg;
1125 if (s->session->sess_cert != NULL)
1127 #ifndef OPENSSL_NO_RSA
1128 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1130 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1131 s->session->sess_cert->peer_rsa_tmp=NULL;
1134 #ifndef OPENSSL_NO_DH
1135 if (s->session->sess_cert->peer_dh_tmp)
1137 DH_free(s->session->sess_cert->peer_dh_tmp);
1138 s->session->sess_cert->peer_dh_tmp=NULL;
1141 #ifndef OPENSSL_NO_ECDH
1142 if (s->session->sess_cert->peer_ecdh_tmp)
1144 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1145 s->session->sess_cert->peer_ecdh_tmp=NULL;
1151 s->session->sess_cert=ssl_sess_cert_new();
1155 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1156 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1157 EVP_MD_CTX_init(&md_ctx);
1159 #ifndef OPENSSL_NO_PSK
1160 if (alg_k & SSL_kPSK)
1162 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1164 al=SSL_AD_HANDSHAKE_FAILURE;
1167 /* Store PSK identity hint for later use, hint is used
1168 * in ssl3_send_client_key_exchange. Assume that the
1169 * maximum length of a PSK identity hint can be as
1170 * long as the maximum length of a PSK identity. */
1171 if (i > PSK_MAX_IDENTITY_LEN)
1173 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1174 SSL_R_DATA_LENGTH_TOO_LONG);
1179 al=SSL_AD_DECODE_ERROR;
1180 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1181 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1184 /* If received PSK identity hint contains NULL
1185 * characters, the hint is truncated from the first
1186 * NULL. p may not be ending with NULL, so create a
1187 * NULL-terminated string. */
1188 memcpy(tmp_id_hint, p, i);
1189 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1190 if (s->ctx->psk_identity_hint != NULL)
1191 OPENSSL_free(s->ctx->psk_identity_hint);
1192 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1193 if (s->ctx->psk_identity_hint == NULL)
1195 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1203 #endif /* !OPENSSL_NO_PSK */
1204 #ifndef OPENSSL_NO_RSA
1205 if (alg_k & SSL_kRSA)
1207 if ((rsa=RSA_new()) == NULL)
1209 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1216 al=SSL_AD_DECODE_ERROR;
1217 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1220 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1222 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1231 al=SSL_AD_DECODE_ERROR;
1232 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1235 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1237 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1243 /* this should be because we are using an export cipher */
1244 if (alg_a & SSL_aRSA)
1245 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1248 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1251 s->session->sess_cert->peer_rsa_tmp=rsa;
1254 #else /* OPENSSL_NO_RSA */
1258 #ifndef OPENSSL_NO_DH
1259 else if (alg_k & SSL_kEDH)
1261 if ((dh=DH_new()) == NULL)
1263 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1270 al=SSL_AD_DECODE_ERROR;
1271 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1274 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1276 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1285 al=SSL_AD_DECODE_ERROR;
1286 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1289 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1291 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1300 al=SSL_AD_DECODE_ERROR;
1301 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1304 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1306 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1312 #ifndef OPENSSL_NO_RSA
1313 if (alg_a & SSL_aRSA)
1314 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1319 #ifndef OPENSSL_NO_DSA
1320 else if (alg_a & SSL_aDSS)
1321 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1323 /* else anonymous DH, so no certificate or pkey. */
1325 s->session->sess_cert->peer_dh_tmp=dh;
1328 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1330 al=SSL_AD_ILLEGAL_PARAMETER;
1331 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1334 #endif /* !OPENSSL_NO_DH */
1336 #ifndef OPENSSL_NO_ECDH
1337 else if (alg_k & SSL_kEECDH)
1340 const EC_GROUP *group;
1342 if ((ecdh=EC_KEY_new()) == NULL)
1344 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1348 /* Extract elliptic curve parameters and the
1349 * server's ephemeral ECDH public key.
1350 * Keep accumulating lengths of various components in
1351 * param_len and make sure it never exceeds n.
1354 /* XXX: For now we only support named (not generic) curves
1355 * and the ECParameters in this case is just three bytes.
1358 if ((param_len > n) ||
1359 (*p != NAMED_CURVE_TYPE) ||
1360 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1362 al=SSL_AD_INTERNAL_ERROR;
1363 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1367 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1370 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1373 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1375 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1378 EC_GROUP_free(ngroup);
1380 group = EC_KEY_get0_group(ecdh);
1382 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1383 (EC_GROUP_get_degree(group) > 163))
1385 al=SSL_AD_EXPORT_RESTRICTION;
1386 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1392 /* Next, get the encoded ECPoint */
1393 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1394 ((bn_ctx = BN_CTX_new()) == NULL))
1396 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1400 encoded_pt_len = *p; /* length of encoded point */
1402 param_len += (1 + encoded_pt_len);
1403 if ((param_len > n) ||
1404 (EC_POINT_oct2point(group, srvr_ecpoint,
1405 p, encoded_pt_len, bn_ctx) == 0))
1407 al=SSL_AD_DECODE_ERROR;
1408 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1415 /* The ECC/TLS specification does not mention
1416 * the use of DSA to sign ECParameters in the server
1417 * key exchange message. We do support RSA and ECDSA.
1420 #ifndef OPENSSL_NO_RSA
1421 else if (alg_a & SSL_aRSA)
1422 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1424 #ifndef OPENSSL_NO_ECDSA
1425 else if (alg_a & SSL_aECDSA)
1426 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1428 /* else anonymous ECDH, so no certificate or pkey. */
1429 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1430 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1432 BN_CTX_free(bn_ctx);
1433 EC_POINT_free(srvr_ecpoint);
1434 srvr_ecpoint = NULL;
1438 al=SSL_AD_UNEXPECTED_MESSAGE;
1439 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1442 #endif /* !OPENSSL_NO_ECDH */
1445 /* p points to the next byte, there are 'n' bytes left */
1447 /* if it was signed, check the signature */
1452 j=EVP_PKEY_size(pkey);
1454 if ((i != n) || (n > j) || (n <= 0))
1456 /* wrong packet length */
1457 al=SSL_AD_DECODE_ERROR;
1458 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1462 #ifndef OPENSSL_NO_RSA
1463 if (pkey->type == EVP_PKEY_RSA)
1469 for (num=2; num > 0; num--)
1471 EVP_DigestInit_ex(&md_ctx,(num == 2)
1472 ?s->ctx->md5:s->ctx->sha1, NULL);
1473 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1474 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1475 EVP_DigestUpdate(&md_ctx,param,param_len);
1476 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1480 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1484 al=SSL_AD_DECRYPT_ERROR;
1485 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1491 al=SSL_AD_DECRYPT_ERROR;
1492 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1498 #ifndef OPENSSL_NO_DSA
1499 if (pkey->type == EVP_PKEY_DSA)
1502 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1503 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1504 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1505 EVP_VerifyUpdate(&md_ctx,param,param_len);
1506 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1509 al=SSL_AD_DECRYPT_ERROR;
1510 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1516 #ifndef OPENSSL_NO_ECDSA
1517 if (pkey->type == EVP_PKEY_EC)
1519 /* let's do ECDSA */
1520 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1521 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1522 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1523 EVP_VerifyUpdate(&md_ctx,param,param_len);
1524 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1527 al=SSL_AD_DECRYPT_ERROR;
1528 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1535 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1541 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1542 /* aNULL or kPSK do not need public keys */
1544 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1547 /* still data left over */
1550 al=SSL_AD_DECODE_ERROR;
1551 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1555 EVP_PKEY_free(pkey);
1556 EVP_MD_CTX_cleanup(&md_ctx);
1559 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1561 EVP_PKEY_free(pkey);
1562 #ifndef OPENSSL_NO_RSA
1566 #ifndef OPENSSL_NO_DH
1570 #ifndef OPENSSL_NO_ECDH
1571 BN_CTX_free(bn_ctx);
1572 EC_POINT_free(srvr_ecpoint);
1576 EVP_MD_CTX_cleanup(&md_ctx);
1580 int ssl3_get_certificate_request(SSL *s)
1583 unsigned long n,nc,l;
1584 unsigned int llen,ctype_num,i;
1586 const unsigned char *p,*q;
1588 STACK_OF(X509_NAME) *ca_sk=NULL;
1590 n=s->method->ssl_get_message(s,
1591 SSL3_ST_CR_CERT_REQ_A,
1592 SSL3_ST_CR_CERT_REQ_B,
1597 if (!ok) return((int)n);
1599 s->s3->tmp.cert_req=0;
1601 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1603 s->s3->tmp.reuse_message=1;
1607 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1609 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1610 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1614 /* TLS does not like anon-DH with client cert */
1615 if (s->version > SSL3_VERSION)
1617 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1619 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1620 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1625 p=d=(unsigned char *)s->init_msg;
1627 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1629 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1633 /* get the certificate types */
1635 if (ctype_num > SSL3_CT_NUMBER)
1636 ctype_num=SSL3_CT_NUMBER;
1637 for (i=0; i<ctype_num; i++)
1638 s->s3->tmp.ctype[i]= p[i];
1641 /* get the CA RDNs */
1646 out=fopen("/tmp/vsign.der","w");
1647 fwrite(p,1,llen,out);
1652 if ((llen+ctype_num+2+1) != n)
1654 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1655 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1659 for (nc=0; nc<llen; )
1662 if ((l+nc+2) > llen)
1664 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1665 goto cont; /* netscape bugs */
1666 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1667 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1673 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1675 /* If netscape tolerance is on, ignore errors */
1676 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1680 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1681 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1688 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1689 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1692 if (!sk_X509_NAME_push(ca_sk,xn))
1694 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1708 /* we should setup a certificate to return.... */
1709 s->s3->tmp.cert_req=1;
1710 s->s3->tmp.ctype_num=ctype_num;
1711 if (s->s3->tmp.ca_names != NULL)
1712 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1713 s->s3->tmp.ca_names=ca_sk;
1718 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1722 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1724 return(X509_NAME_cmp(*a,*b));
1726 #ifndef OPENSSL_NO_TLSEXT
1727 int ssl3_get_new_session_ticket(SSL *s)
1729 int ok,al,ret=0, ticklen;
1731 const unsigned char *p;
1734 n=s->method->ssl_get_message(s,
1735 SSL3_ST_CR_SESSION_TICKET_A,
1736 SSL3_ST_CR_SESSION_TICKET_B,
1744 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1746 s->s3->tmp.reuse_message=1;
1749 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1751 al=SSL_AD_UNEXPECTED_MESSAGE;
1752 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1757 /* need at least ticket_lifetime_hint + ticket length */
1758 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1759 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1762 p=d=(unsigned char *)s->init_msg;
1763 n2l(p, s->session->tlsext_tick_lifetime_hint);
1765 /* ticket_lifetime_hint + ticket_length + ticket */
1766 if (ticklen + 6 != n)
1768 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1769 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1772 if (s->session->tlsext_tick)
1774 OPENSSL_free(s->session->tlsext_tick);
1775 s->session->tlsext_ticklen = 0;
1777 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1778 if (!s->session->tlsext_tick)
1780 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1783 memcpy(s->session->tlsext_tick, p, ticklen);
1784 s->session->tlsext_ticklen = ticklen;
1789 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1795 int ssl3_get_server_done(SSL *s)
1800 n=s->method->ssl_get_message(s,
1801 SSL3_ST_CR_SRVR_DONE_A,
1802 SSL3_ST_CR_SRVR_DONE_B,
1803 SSL3_MT_SERVER_DONE,
1804 30, /* should be very small, like 0 :-) */
1807 if (!ok) return((int)n);
1810 /* should contain no data */
1811 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1812 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1820 int ssl3_send_client_key_exchange(SSL *s)
1822 unsigned char *p,*d;
1824 unsigned long alg_k;
1825 #ifndef OPENSSL_NO_RSA
1827 EVP_PKEY *pkey=NULL;
1829 #ifndef OPENSSL_NO_KRB5
1831 #endif /* OPENSSL_NO_KRB5 */
1832 #ifndef OPENSSL_NO_ECDH
1833 EC_KEY *clnt_ecdh = NULL;
1834 const EC_POINT *srvr_ecpoint = NULL;
1835 EVP_PKEY *srvr_pub_pkey = NULL;
1836 unsigned char *encodedPoint = NULL;
1837 int encoded_pt_len = 0;
1838 BN_CTX * bn_ctx = NULL;
1841 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1843 d=(unsigned char *)s->init_buf->data;
1846 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1848 /* Fool emacs indentation */
1850 #ifndef OPENSSL_NO_RSA
1851 else if (alg_k & SSL_kRSA)
1854 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1856 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1857 rsa=s->session->sess_cert->peer_rsa_tmp;
1860 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1861 if ((pkey == NULL) ||
1862 (pkey->type != EVP_PKEY_RSA) ||
1863 (pkey->pkey.rsa == NULL))
1865 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1869 EVP_PKEY_free(pkey);
1872 tmp_buf[0]=s->client_version>>8;
1873 tmp_buf[1]=s->client_version&0xff;
1874 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1877 s->session->master_key_length=sizeof tmp_buf;
1880 /* Fix buf for TLS and beyond */
1881 if (s->version > SSL3_VERSION)
1883 n=RSA_public_encrypt(sizeof tmp_buf,
1884 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1886 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1887 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1891 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1895 /* Fix buf for TLS and beyond */
1896 if (s->version > SSL3_VERSION)
1902 s->session->master_key_length=
1903 s->method->ssl3_enc->generate_master_secret(s,
1904 s->session->master_key,
1905 tmp_buf,sizeof tmp_buf);
1906 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1909 #ifndef OPENSSL_NO_KRB5
1910 else if (alg_k & SSL_kKRB5)
1912 krb5_error_code krb5rc;
1913 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1914 /* krb5_data krb5_ap_req; */
1915 krb5_data *enc_ticket;
1916 krb5_data authenticator, *authp = NULL;
1917 EVP_CIPHER_CTX ciph_ctx;
1918 EVP_CIPHER *enc = NULL;
1919 unsigned char iv[EVP_MAX_IV_LENGTH];
1920 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1921 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1922 + EVP_MAX_IV_LENGTH];
1923 int padl, outl = sizeof(epms);
1925 EVP_CIPHER_CTX_init(&ciph_ctx);
1928 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1930 #endif /* KSSL_DEBUG */
1934 if (KRB5SENDAUTH) authp = &authenticator;
1935 #endif /* KRB5SENDAUTH */
1937 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1939 enc = kssl_map_enc(kssl_ctx->enctype);
1944 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1945 if (krb5rc && kssl_err.text)
1946 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1948 #endif /* KSSL_DEBUG */
1952 ssl3_send_alert(s,SSL3_AL_FATAL,
1953 SSL_AD_HANDSHAKE_FAILURE);
1954 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1959 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1960 ** in place of RFC 2712 KerberosWrapper, as in:
1962 ** Send ticket (copy to *p, set n = length)
1963 ** n = krb5_ap_req.length;
1964 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1965 ** if (krb5_ap_req.data)
1966 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1968 ** Now using real RFC 2712 KerberosWrapper
1969 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1970 ** Note: 2712 "opaque" types are here replaced
1971 ** with a 2-byte length followed by the value.
1973 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1974 ** Where "xx xx" = length bytes. Shown here with
1975 ** optional authenticator omitted.
1978 /* KerberosWrapper.Ticket */
1979 s2n(enc_ticket->length,p);
1980 memcpy(p, enc_ticket->data, enc_ticket->length);
1981 p+= enc_ticket->length;
1982 n = enc_ticket->length + 2;
1984 /* KerberosWrapper.Authenticator */
1985 if (authp && authp->length)
1987 s2n(authp->length,p);
1988 memcpy(p, authp->data, authp->length);
1990 n+= authp->length + 2;
1998 s2n(0,p);/* null authenticator length */
2002 tmp_buf[0]=s->client_version>>8;
2003 tmp_buf[1]=s->client_version&0xff;
2004 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2007 /* 20010420 VRS. Tried it this way; failed.
2008 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2009 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2010 ** kssl_ctx->length);
2011 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2014 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2015 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2017 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2019 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2021 if (outl > sizeof epms)
2023 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2026 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2028 /* KerberosWrapper.EncryptedPreMasterSecret */
2030 memcpy(p, epms, outl);
2034 s->session->master_key_length=
2035 s->method->ssl3_enc->generate_master_secret(s,
2036 s->session->master_key,
2037 tmp_buf, sizeof tmp_buf);
2039 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2040 OPENSSL_cleanse(epms, outl);
2043 #ifndef OPENSSL_NO_DH
2044 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2046 DH *dh_srvr,*dh_clnt;
2048 if (s->session->sess_cert->peer_dh_tmp != NULL)
2049 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2052 /* we get them from the cert */
2053 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2054 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2058 /* generate a new random key */
2059 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2061 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2064 if (!DH_generate_key(dh_clnt))
2066 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2070 /* use the 'p' output buffer for the DH key, but
2071 * make sure to clear it out afterwards */
2073 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2077 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2081 /* generate master key from the result */
2082 s->session->master_key_length=
2083 s->method->ssl3_enc->generate_master_secret(s,
2084 s->session->master_key,p,n);
2088 /* send off the data */
2089 n=BN_num_bytes(dh_clnt->pub_key);
2091 BN_bn2bin(dh_clnt->pub_key,p);
2096 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2100 #ifndef OPENSSL_NO_ECDH
2101 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2103 const EC_GROUP *srvr_group = NULL;
2105 int ecdh_clnt_cert = 0;
2108 /* Did we send out the client's
2109 * ECDH share for use in premaster
2110 * computation as part of client certificate?
2111 * If so, set ecdh_clnt_cert to 1.
2113 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2115 /* XXX: For now, we do not support client
2116 * authentication using ECDH certificates.
2117 * To add such support, one needs to add
2118 * code that checks for appropriate
2119 * conditions and sets ecdh_clnt_cert to 1.
2120 * For example, the cert have an ECC
2121 * key on the same curve as the server's
2122 * and the key should be authorized for
2125 * One also needs to add code in ssl3_connect
2126 * to skip sending the certificate verify
2129 * if ((s->cert->key->privatekey != NULL) &&
2130 * (s->cert->key->privatekey->type ==
2131 * EVP_PKEY_EC) && ...)
2132 * ecdh_clnt_cert = 1;
2136 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2138 tkey = s->session->sess_cert->peer_ecdh_tmp;
2142 /* Get the Server Public Key from Cert */
2143 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2144 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2145 if ((srvr_pub_pkey == NULL) ||
2146 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2147 (srvr_pub_pkey->pkey.ec == NULL))
2149 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2150 ERR_R_INTERNAL_ERROR);
2154 tkey = srvr_pub_pkey->pkey.ec;
2157 srvr_group = EC_KEY_get0_group(tkey);
2158 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2160 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2162 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2163 ERR_R_INTERNAL_ERROR);
2167 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2169 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2173 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2175 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2180 /* Reuse key info from our certificate
2181 * We only need our private key to perform
2182 * the ECDH computation.
2184 const BIGNUM *priv_key;
2185 tkey = s->cert->key->privatekey->pkey.ec;
2186 priv_key = EC_KEY_get0_private_key(tkey);
2187 if (priv_key == NULL)
2189 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2192 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2194 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2200 /* Generate a new ECDH key pair */
2201 if (!(EC_KEY_generate_key(clnt_ecdh)))
2203 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2208 /* use the 'p' output buffer for the ECDH key, but
2209 * make sure to clear it out afterwards
2212 field_size = EC_GROUP_get_degree(srvr_group);
2213 if (field_size <= 0)
2215 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2219 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2222 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2227 /* generate master key from the result */
2228 s->session->master_key_length = s->method->ssl3_enc \
2229 -> generate_master_secret(s,
2230 s->session->master_key,
2233 memset(p, 0, n); /* clean up */
2237 /* Send empty client key exch message */
2242 /* First check the size of encoding and
2243 * allocate memory accordingly.
2246 EC_POINT_point2oct(srvr_group,
2247 EC_KEY_get0_public_key(clnt_ecdh),
2248 POINT_CONVERSION_UNCOMPRESSED,
2251 encodedPoint = (unsigned char *)
2252 OPENSSL_malloc(encoded_pt_len *
2253 sizeof(unsigned char));
2254 bn_ctx = BN_CTX_new();
2255 if ((encodedPoint == NULL) ||
2258 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2262 /* Encode the public key */
2263 n = EC_POINT_point2oct(srvr_group,
2264 EC_KEY_get0_public_key(clnt_ecdh),
2265 POINT_CONVERSION_UNCOMPRESSED,
2266 encodedPoint, encoded_pt_len, bn_ctx);
2268 *p = n; /* length of encoded point */
2269 /* Encoded point will be copied here */
2271 /* copy the point */
2272 memcpy((unsigned char *)p, encodedPoint, n);
2273 /* increment n to account for length field */
2277 /* Free allocated memory */
2278 BN_CTX_free(bn_ctx);
2279 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2280 if (clnt_ecdh != NULL)
2281 EC_KEY_free(clnt_ecdh);
2282 EVP_PKEY_free(srvr_pub_pkey);
2284 #endif /* !OPENSSL_NO_ECDH */
2285 #ifndef OPENSSL_NO_PSK
2286 else if (alg_k & SSL_kPSK)
2288 char identity[PSK_MAX_IDENTITY_LEN];
2289 unsigned char *t = NULL;
2290 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2291 unsigned int pre_ms_len = 0, psk_len = 0;
2295 if (s->psk_client_callback == NULL)
2297 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2298 SSL_R_PSK_NO_CLIENT_CB);
2302 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2303 identity, PSK_MAX_IDENTITY_LEN,
2304 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2305 if (psk_len > PSK_MAX_PSK_LEN)
2307 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2308 ERR_R_INTERNAL_ERROR);
2311 else if (psk_len == 0)
2313 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2314 SSL_R_PSK_IDENTITY_NOT_FOUND);
2318 /* create PSK pre_master_secret */
2319 pre_ms_len = 2+psk_len+2+psk_len;
2321 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2323 memset(t, 0, psk_len);
2327 if (s->session->psk_identity_hint != NULL)
2328 OPENSSL_free(s->session->psk_identity_hint);
2329 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2330 if (s->ctx->psk_identity_hint != NULL &&
2331 s->session->psk_identity_hint == NULL)
2333 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2334 ERR_R_MALLOC_FAILURE);
2338 if (s->session->psk_identity != NULL)
2339 OPENSSL_free(s->session->psk_identity);
2340 s->session->psk_identity = BUF_strdup(identity);
2341 if (s->session->psk_identity == NULL)
2343 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2344 ERR_R_MALLOC_FAILURE);
2348 s->session->master_key_length =
2349 s->method->ssl3_enc->generate_master_secret(s,
2350 s->session->master_key,
2351 psk_or_pre_ms, pre_ms_len);
2352 n = strlen(identity);
2354 memcpy(p, identity, n);
2358 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2359 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2362 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2369 ssl3_send_alert(s, SSL3_AL_FATAL,
2370 SSL_AD_HANDSHAKE_FAILURE);
2371 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2372 ERR_R_INTERNAL_ERROR);
2376 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2379 s->state=SSL3_ST_CW_KEY_EXCH_B;
2380 /* number of bytes to write */
2385 /* SSL3_ST_CW_KEY_EXCH_B */
2386 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2388 #ifndef OPENSSL_NO_ECDH
2389 BN_CTX_free(bn_ctx);
2390 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2391 if (clnt_ecdh != NULL)
2392 EC_KEY_free(clnt_ecdh);
2393 EVP_PKEY_free(srvr_pub_pkey);
2398 int ssl3_send_client_verify(SSL *s)
2400 unsigned char *p,*d;
2401 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2403 #ifndef OPENSSL_NO_RSA
2407 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2411 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2413 d=(unsigned char *)s->init_buf->data;
2415 pkey=s->cert->key->privatekey;
2417 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2418 &(data[MD5_DIGEST_LENGTH]));
2420 #ifndef OPENSSL_NO_RSA
2421 if (pkey->type == EVP_PKEY_RSA)
2423 s->method->ssl3_enc->cert_verify_mac(s,
2424 &(s->s3->finish_dgst1),&(data[0]));
2425 if (RSA_sign(NID_md5_sha1, data,
2426 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2427 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2429 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2437 #ifndef OPENSSL_NO_DSA
2438 if (pkey->type == EVP_PKEY_DSA)
2440 if (!DSA_sign(pkey->save_type,
2441 &(data[MD5_DIGEST_LENGTH]),
2442 SHA_DIGEST_LENGTH,&(p[2]),
2443 (unsigned int *)&j,pkey->pkey.dsa))
2445 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2453 #ifndef OPENSSL_NO_ECDSA
2454 if (pkey->type == EVP_PKEY_EC)
2456 if (!ECDSA_sign(pkey->save_type,
2457 &(data[MD5_DIGEST_LENGTH]),
2458 SHA_DIGEST_LENGTH,&(p[2]),
2459 (unsigned int *)&j,pkey->pkey.ec))
2461 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2471 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2474 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2477 s->state=SSL3_ST_CW_CERT_VRFY_B;
2478 s->init_num=(int)n+4;
2481 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2486 int ssl3_send_client_certificate(SSL *s)
2489 EVP_PKEY *pkey=NULL;
2493 if (s->state == SSL3_ST_CW_CERT_A)
2495 if ((s->cert == NULL) ||
2496 (s->cert->key->x509 == NULL) ||
2497 (s->cert->key->privatekey == NULL))
2498 s->state=SSL3_ST_CW_CERT_B;
2500 s->state=SSL3_ST_CW_CERT_C;
2503 /* We need to get a client cert */
2504 if (s->state == SSL3_ST_CW_CERT_B)
2506 /* If we get an error, we need to
2507 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2508 * We then get retied later */
2510 if (s->ctx->client_cert_cb != NULL)
2511 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2514 s->rwstate=SSL_X509_LOOKUP;
2517 s->rwstate=SSL_NOTHING;
2518 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2520 s->state=SSL3_ST_CW_CERT_B;
2521 if ( !SSL_use_certificate(s,x509) ||
2522 !SSL_use_PrivateKey(s,pkey))
2528 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2531 if (x509 != NULL) X509_free(x509);
2532 if (pkey != NULL) EVP_PKEY_free(pkey);
2535 if (s->version == SSL3_VERSION)
2537 s->s3->tmp.cert_req=0;
2538 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2543 s->s3->tmp.cert_req=2;
2547 /* Ok, we have a cert */
2548 s->state=SSL3_ST_CW_CERT_C;
2551 if (s->state == SSL3_ST_CW_CERT_C)
2553 s->state=SSL3_ST_CW_CERT_D;
2554 l=ssl3_output_cert_chain(s,
2555 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2559 /* SSL3_ST_CW_CERT_D */
2560 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2563 #define has_bits(i,m) (((i)&(m)) == (m))
2565 int ssl3_check_cert_and_algorithm(SSL *s)
2569 EVP_PKEY *pkey=NULL;
2571 #ifndef OPENSSL_NO_RSA
2574 #ifndef OPENSSL_NO_DH
2578 sc=s->session->sess_cert;
2581 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2585 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2586 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2588 /* we don't have a certificate */
2589 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2592 #ifndef OPENSSL_NO_RSA
2593 rsa=s->session->sess_cert->peer_rsa_tmp;
2595 #ifndef OPENSSL_NO_DH
2596 dh=s->session->sess_cert->peer_dh_tmp;
2599 /* This is the passed certificate */
2601 idx=sc->peer_cert_type;
2602 #ifndef OPENSSL_NO_ECDH
2603 if (idx == SSL_PKEY_ECC)
2605 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2606 s->s3->tmp.new_cipher) == 0)
2607 { /* check failed */
2608 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2617 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2618 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2619 EVP_PKEY_free(pkey);
2622 /* Check that we have a certificate if we require one */
2623 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2625 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2628 #ifndef OPENSSL_NO_DSA
2629 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2631 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2635 #ifndef OPENSSL_NO_RSA
2636 if ((alg_k & SSL_kRSA) &&
2637 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2639 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2643 #ifndef OPENSSL_NO_DH
2644 if ((alg_k & SSL_kEDH) &&
2645 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2647 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2650 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2652 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2655 #ifndef OPENSSL_NO_DSA
2656 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2658 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2664 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2666 #ifndef OPENSSL_NO_RSA
2667 if (alg_k & SSL_kRSA)
2670 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2672 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2678 #ifndef OPENSSL_NO_DH
2679 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2682 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2684 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2691 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2697 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2702 /* Check to see if handshake is full or resumed. Usually this is just a
2703 * case of checking to see if a cache hit has occurred. In the case of
2704 * session tickets we have to check the next message to be sure.
2707 #ifndef OPENSSL_NO_TLSEXT
2708 static int ssl3_check_finished(SSL *s)
2712 if (!s->session->tlsext_tick)
2714 /* this function is called when we really expect a Certificate
2715 * message, so permit appropriate message length */
2716 n=s->method->ssl_get_message(s,
2722 if (!ok) return((int)n);
2723 s->s3->tmp.reuse_message = 1;
2724 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2725 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))