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 if (ret <= 0) goto end;
473 s->state=SSL3_ST_CR_FINISHED_A;
478 case SSL3_ST_CR_FINISHED_A:
479 case SSL3_ST_CR_FINISHED_B:
481 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
482 SSL3_ST_CR_FINISHED_B);
483 if (ret <= 0) goto end;
486 s->state=SSL3_ST_CW_CHANGE_A;
492 case SSL3_ST_CW_FLUSH:
493 /* number of bytes to be flushed */
494 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
497 s->rwstate=SSL_WRITING;
498 num1=BIO_flush(s->wbio);
499 if (num1 <= 0) { ret= -1; goto end; }
500 s->rwstate=SSL_NOTHING;
503 s->state=s->s3->tmp.next_state;
507 /* clean a few things up */
508 ssl3_cleanup_key_block(s);
510 if (s->init_buf != NULL)
512 BUF_MEM_free(s->init_buf);
516 /* If we are not 'joining' the last two packets,
517 * remove the buffering now */
518 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
519 ssl_free_wbio_buffer(s);
520 /* else do it later in ssl3_write */
525 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
526 if (s->hit) s->ctx->stats.sess_hit++;
530 s->handshake_func=ssl3_connect;
531 s->ctx->stats.sess_connect_good++;
533 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
539 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
545 /* did we do anything */
546 if (!s->s3->tmp.reuse_message && !skip)
550 if ((ret=BIO_flush(s->wbio)) <= 0)
554 if ((cb != NULL) && (s->state != state))
558 cb(s,SSL_CB_CONNECT_LOOP,1);
569 cb(s,SSL_CB_CONNECT_EXIT,ret);
574 int ssl3_client_hello(SSL *s)
579 unsigned long Time,l;
580 #ifndef OPENSSL_NO_COMP
585 buf=(unsigned char *)s->init_buf->data;
586 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
588 if ((s->session == NULL) ||
589 (s->session->ssl_version != s->version) ||
590 (s->session->not_resumable))
592 if (!ssl_get_new_session(s,0))
595 /* else use the pre-loaded session */
597 p=s->s3->client_random;
598 Time=(unsigned long)time(NULL); /* Time */
600 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
603 /* Do the message type and length last */
606 *(p++)=s->version>>8;
607 *(p++)=s->version&0xff;
608 s->client_version=s->version;
611 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
618 i=s->session->session_id_length;
622 if (i > (int)sizeof(s->session->session_id))
624 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
627 memcpy(p,s->session->session_id,i);
631 /* Ciphers supported */
632 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
635 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
642 #ifdef OPENSSL_NO_COMP
646 if ((s->options & SSL_OP_NO_COMPRESSION)
647 || !s->ctx->comp_methods)
650 j=sk_SSL_COMP_num(s->ctx->comp_methods);
654 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
658 *(p++)=0; /* Add the NULL method */
659 #ifndef OPENSSL_NO_TLSEXT
660 if (ssl_prepare_clienthello_tlsext(s) <= 0)
662 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
665 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
667 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
674 *(d++)=SSL3_MT_CLIENT_HELLO;
677 s->state=SSL3_ST_CW_CLNT_HELLO_B;
678 /* number of bytes to write */
683 /* SSL3_ST_CW_CLNT_HELLO_B */
684 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
689 int ssl3_get_server_hello(SSL *s)
691 STACK_OF(SSL_CIPHER) *sk;
697 #ifndef OPENSSL_NO_COMP
701 n=s->method->ssl_get_message(s,
702 SSL3_ST_CR_SRVR_HELLO_A,
703 SSL3_ST_CR_SRVR_HELLO_B,
708 if (!ok) return((int)n);
710 if ( SSL_version(s) == DTLS1_VERSION)
712 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
714 if ( s->d1->send_cookie == 0)
716 s->s3->tmp.reuse_message = 1;
719 else /* already sent a cookie */
721 al=SSL_AD_UNEXPECTED_MESSAGE;
722 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
728 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
730 al=SSL_AD_UNEXPECTED_MESSAGE;
731 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
735 d=p=(unsigned char *)s->init_msg;
737 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
739 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
740 s->version=(s->version&0xff00)|p[1];
741 al=SSL_AD_PROTOCOL_VERSION;
746 /* load the server hello data */
747 /* load the server random */
748 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
751 /* get the session-id */
754 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
756 al=SSL_AD_ILLEGAL_PARAMETER;
757 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
761 if (j != 0 && j == s->session->session_id_length
762 && memcmp(p,s->session->session_id,j) == 0)
764 if(s->sid_ctx_length != s->session->sid_ctx_length
765 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
767 /* actually a client application bug */
768 al=SSL_AD_ILLEGAL_PARAMETER;
769 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
774 else /* a miss or crap from the other end */
776 /* If we were trying for session-id reuse, make a new
777 * SSL_SESSION so we don't stuff up other people */
779 if (s->session->session_id_length > 0)
781 if (!ssl_get_new_session(s,0))
783 al=SSL_AD_INTERNAL_ERROR;
787 s->session->session_id_length=j;
788 memcpy(s->session->session_id,p,j); /* j could be 0 */
791 c=ssl_get_cipher_by_char(s,p);
795 al=SSL_AD_ILLEGAL_PARAMETER;
796 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
799 p+=ssl_put_cipher_by_char(s,NULL,NULL);
801 sk=ssl_get_ciphers_by_id(s);
802 i=sk_SSL_CIPHER_find(sk,c);
805 /* we did not say we would use this cipher */
806 al=SSL_AD_ILLEGAL_PARAMETER;
807 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
811 /* Depending on the session caching (internal/external), the cipher
812 and/or cipher_id values may not be set. Make sure that
813 cipher_id is set and use it for comparison. */
814 if (s->session->cipher)
815 s->session->cipher_id = s->session->cipher->id;
816 if (s->hit && (s->session->cipher_id != c->id))
819 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
821 al=SSL_AD_ILLEGAL_PARAMETER;
822 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
826 s->s3->tmp.new_cipher=c;
827 ssl3_digest_cached_records(s);
829 /* lets get the compression algorithm */
831 #ifdef OPENSSL_NO_COMP
834 al=SSL_AD_ILLEGAL_PARAMETER;
835 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
840 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
843 comp=ssl3_comp_find(s->ctx->comp_methods,j);
845 if ((j != 0) && (comp == NULL))
847 al=SSL_AD_ILLEGAL_PARAMETER;
848 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
853 s->s3->tmp.new_compression=comp;
856 #ifndef OPENSSL_NO_TLSEXT
858 if (s->version > SSL3_VERSION)
860 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
862 /* 'al' set by ssl_parse_serverhello_tlsext */
863 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
866 if (ssl_check_serverhello_tlsext(s) <= 0)
868 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
876 /* wrong packet length */
877 al=SSL_AD_DECODE_ERROR;
878 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
884 ssl3_send_alert(s,SSL3_AL_FATAL,al);
889 int ssl3_get_server_certificate(SSL *s)
892 unsigned long n,nc,llen,l;
894 const unsigned char *q,*p;
896 STACK_OF(X509) *sk=NULL;
899 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
901 n=s->method->ssl_get_message(s,
908 if (!ok) return((int)n);
910 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
912 s->s3->tmp.reuse_message=1;
916 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
918 al=SSL_AD_UNEXPECTED_MESSAGE;
919 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
922 p=d=(unsigned char *)s->init_msg;
924 if ((sk=sk_X509_new_null()) == NULL)
926 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
933 al=SSL_AD_DECODE_ERROR;
934 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
937 for (nc=0; nc<llen; )
942 al=SSL_AD_DECODE_ERROR;
943 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
948 x=d2i_X509(NULL,&q,l);
951 al=SSL_AD_BAD_CERTIFICATE;
952 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
957 al=SSL_AD_DECODE_ERROR;
958 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
961 if (!sk_X509_push(sk,x))
963 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
971 i=ssl_verify_cert_chain(s,sk);
972 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
973 #ifndef OPENSSL_NO_KRB5
974 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
975 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
976 #endif /* OPENSSL_NO_KRB5 */
979 al=ssl_verify_alarm_type(s->verify_result);
980 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
983 ERR_clear_error(); /* but we keep s->verify_result */
985 sc=ssl_sess_cert_new();
986 if (sc == NULL) goto err;
988 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
989 s->session->sess_cert=sc;
992 /* Inconsistency alert: cert_chain does include the peer's
993 * certificate, which we don't include in s3_srvr.c */
994 x=sk_X509_value(sk,0);
996 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
998 pkey=X509_get_pubkey(x);
1000 /* VRS: allow null cert if auth == KRB5 */
1001 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1002 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1006 printf("pkey,x = %p, %p\n", pkey,x);
1007 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1008 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1009 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1010 #endif /* KSSL_DEBUG */
1012 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1016 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1017 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1021 i=ssl_cert_type(x,pkey);
1022 if (need_cert && i < 0)
1026 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1027 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1033 sc->peer_cert_type=i;
1034 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1035 /* Why would the following ever happen?
1036 * We just created sc a couple of lines ago. */
1037 if (sc->peer_pkeys[i].x509 != NULL)
1038 X509_free(sc->peer_pkeys[i].x509);
1039 sc->peer_pkeys[i].x509=x;
1040 sc->peer_key= &(sc->peer_pkeys[i]);
1042 if (s->session->peer != NULL)
1043 X509_free(s->session->peer);
1044 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1049 sc->peer_cert_type=i;
1052 if (s->session->peer != NULL)
1053 X509_free(s->session->peer);
1054 s->session->peer=NULL;
1056 s->session->verify_result = s->verify_result;
1064 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1067 EVP_PKEY_free(pkey);
1069 sk_X509_pop_free(sk,X509_free);
1073 int ssl3_get_key_exchange(SSL *s)
1075 #ifndef OPENSSL_NO_RSA
1076 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1079 unsigned char *param,*p;
1080 int al,i,j,param_len,ok;
1082 EVP_PKEY *pkey=NULL;
1083 #ifndef OPENSSL_NO_RSA
1086 #ifndef OPENSSL_NO_DH
1089 #ifndef OPENSSL_NO_ECDH
1090 EC_KEY *ecdh = NULL;
1091 BN_CTX *bn_ctx = NULL;
1092 EC_POINT *srvr_ecpoint = NULL;
1094 int encoded_pt_len = 0;
1097 /* use same message size as in ssl3_get_certificate_request()
1098 * as ServerKeyExchange message may be skipped */
1099 n=s->method->ssl_get_message(s,
1100 SSL3_ST_CR_KEY_EXCH_A,
1101 SSL3_ST_CR_KEY_EXCH_B,
1105 if (!ok) return((int)n);
1107 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1109 #ifndef OPENSSL_NO_PSK
1110 /* In plain PSK ciphersuite, ServerKeyExchange can be
1111 omitted if no identity hint is sent. Set
1112 session->sess_cert anyway to avoid problems
1114 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1116 s->session->sess_cert=ssl_sess_cert_new();
1117 if (s->ctx->psk_identity_hint)
1118 OPENSSL_free(s->ctx->psk_identity_hint);
1119 s->ctx->psk_identity_hint = NULL;
1122 s->s3->tmp.reuse_message=1;
1126 param=p=(unsigned char *)s->init_msg;
1127 if (s->session->sess_cert != NULL)
1129 #ifndef OPENSSL_NO_RSA
1130 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1132 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1133 s->session->sess_cert->peer_rsa_tmp=NULL;
1136 #ifndef OPENSSL_NO_DH
1137 if (s->session->sess_cert->peer_dh_tmp)
1139 DH_free(s->session->sess_cert->peer_dh_tmp);
1140 s->session->sess_cert->peer_dh_tmp=NULL;
1143 #ifndef OPENSSL_NO_ECDH
1144 if (s->session->sess_cert->peer_ecdh_tmp)
1146 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1147 s->session->sess_cert->peer_ecdh_tmp=NULL;
1153 s->session->sess_cert=ssl_sess_cert_new();
1157 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1158 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1159 EVP_MD_CTX_init(&md_ctx);
1161 #ifndef OPENSSL_NO_PSK
1162 if (alg_k & SSL_kPSK)
1164 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1166 al=SSL_AD_HANDSHAKE_FAILURE;
1169 /* Store PSK identity hint for later use, hint is used
1170 * in ssl3_send_client_key_exchange. Assume that the
1171 * maximum length of a PSK identity hint can be as
1172 * long as the maximum length of a PSK identity. */
1173 if (i > PSK_MAX_IDENTITY_LEN)
1175 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1176 SSL_R_DATA_LENGTH_TOO_LONG);
1181 al=SSL_AD_DECODE_ERROR;
1182 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1183 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1186 /* If received PSK identity hint contains NULL
1187 * characters, the hint is truncated from the first
1188 * NULL. p may not be ending with NULL, so create a
1189 * NULL-terminated string. */
1190 memcpy(tmp_id_hint, p, i);
1191 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1192 if (s->ctx->psk_identity_hint != NULL)
1193 OPENSSL_free(s->ctx->psk_identity_hint);
1194 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1195 if (s->ctx->psk_identity_hint == NULL)
1197 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1205 #endif /* !OPENSSL_NO_PSK */
1206 #ifndef OPENSSL_NO_RSA
1207 if (alg_k & SSL_kRSA)
1209 if ((rsa=RSA_new()) == NULL)
1211 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1218 al=SSL_AD_DECODE_ERROR;
1219 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1222 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1224 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1233 al=SSL_AD_DECODE_ERROR;
1234 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1237 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1239 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1245 /* this should be because we are using an export cipher */
1246 if (alg_a & SSL_aRSA)
1247 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1250 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1253 s->session->sess_cert->peer_rsa_tmp=rsa;
1256 #else /* OPENSSL_NO_RSA */
1260 #ifndef OPENSSL_NO_DH
1261 else if (alg_k & SSL_kEDH)
1263 if ((dh=DH_new()) == NULL)
1265 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1272 al=SSL_AD_DECODE_ERROR;
1273 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1276 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1278 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1287 al=SSL_AD_DECODE_ERROR;
1288 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1291 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1293 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1302 al=SSL_AD_DECODE_ERROR;
1303 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1306 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1308 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1314 #ifndef OPENSSL_NO_RSA
1315 if (alg_a & SSL_aRSA)
1316 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1321 #ifndef OPENSSL_NO_DSA
1322 else if (alg_a & SSL_aDSS)
1323 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1325 /* else anonymous DH, so no certificate or pkey. */
1327 s->session->sess_cert->peer_dh_tmp=dh;
1330 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1332 al=SSL_AD_ILLEGAL_PARAMETER;
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1336 #endif /* !OPENSSL_NO_DH */
1338 #ifndef OPENSSL_NO_ECDH
1339 else if (alg_k & SSL_kEECDH)
1342 const EC_GROUP *group;
1344 if ((ecdh=EC_KEY_new()) == NULL)
1346 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1350 /* Extract elliptic curve parameters and the
1351 * server's ephemeral ECDH public key.
1352 * Keep accumulating lengths of various components in
1353 * param_len and make sure it never exceeds n.
1356 /* XXX: For now we only support named (not generic) curves
1357 * and the ECParameters in this case is just three bytes.
1360 if ((param_len > n) ||
1361 (*p != NAMED_CURVE_TYPE) ||
1362 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1364 al=SSL_AD_INTERNAL_ERROR;
1365 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1369 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1375 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1377 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1380 EC_GROUP_free(ngroup);
1382 group = EC_KEY_get0_group(ecdh);
1384 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1385 (EC_GROUP_get_degree(group) > 163))
1387 al=SSL_AD_EXPORT_RESTRICTION;
1388 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1394 /* Next, get the encoded ECPoint */
1395 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1396 ((bn_ctx = BN_CTX_new()) == NULL))
1398 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1402 encoded_pt_len = *p; /* length of encoded point */
1404 param_len += (1 + encoded_pt_len);
1405 if ((param_len > n) ||
1406 (EC_POINT_oct2point(group, srvr_ecpoint,
1407 p, encoded_pt_len, bn_ctx) == 0))
1409 al=SSL_AD_DECODE_ERROR;
1410 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1417 /* The ECC/TLS specification does not mention
1418 * the use of DSA to sign ECParameters in the server
1419 * key exchange message. We do support RSA and ECDSA.
1422 #ifndef OPENSSL_NO_RSA
1423 else if (alg_a & SSL_aRSA)
1424 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1426 #ifndef OPENSSL_NO_ECDSA
1427 else if (alg_a & SSL_aECDSA)
1428 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1430 /* else anonymous ECDH, so no certificate or pkey. */
1431 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1432 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1434 BN_CTX_free(bn_ctx);
1435 EC_POINT_free(srvr_ecpoint);
1436 srvr_ecpoint = NULL;
1440 al=SSL_AD_UNEXPECTED_MESSAGE;
1441 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1444 #endif /* !OPENSSL_NO_ECDH */
1447 /* p points to the next byte, there are 'n' bytes left */
1449 /* if it was signed, check the signature */
1454 j=EVP_PKEY_size(pkey);
1456 if ((i != n) || (n > j) || (n <= 0))
1458 /* wrong packet length */
1459 al=SSL_AD_DECODE_ERROR;
1460 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1464 #ifndef OPENSSL_NO_RSA
1465 if (pkey->type == EVP_PKEY_RSA)
1471 for (num=2; num > 0; num--)
1473 EVP_DigestInit_ex(&md_ctx,(num == 2)
1474 ?s->ctx->md5:s->ctx->sha1, NULL);
1475 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1476 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1477 EVP_DigestUpdate(&md_ctx,param,param_len);
1478 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1482 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1486 al=SSL_AD_DECRYPT_ERROR;
1487 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1493 al=SSL_AD_DECRYPT_ERROR;
1494 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1500 #ifndef OPENSSL_NO_DSA
1501 if (pkey->type == EVP_PKEY_DSA)
1504 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1505 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1506 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1507 EVP_VerifyUpdate(&md_ctx,param,param_len);
1508 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1511 al=SSL_AD_DECRYPT_ERROR;
1512 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1518 #ifndef OPENSSL_NO_ECDSA
1519 if (pkey->type == EVP_PKEY_EC)
1521 /* let's do ECDSA */
1522 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1523 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1524 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1525 EVP_VerifyUpdate(&md_ctx,param,param_len);
1526 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1529 al=SSL_AD_DECRYPT_ERROR;
1530 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1537 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1543 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1544 /* aNULL or kPSK do not need public keys */
1546 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1549 /* still data left over */
1552 al=SSL_AD_DECODE_ERROR;
1553 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1557 EVP_PKEY_free(pkey);
1558 EVP_MD_CTX_cleanup(&md_ctx);
1561 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1563 EVP_PKEY_free(pkey);
1564 #ifndef OPENSSL_NO_RSA
1568 #ifndef OPENSSL_NO_DH
1572 #ifndef OPENSSL_NO_ECDH
1573 BN_CTX_free(bn_ctx);
1574 EC_POINT_free(srvr_ecpoint);
1578 EVP_MD_CTX_cleanup(&md_ctx);
1582 int ssl3_get_certificate_request(SSL *s)
1585 unsigned long n,nc,l;
1586 unsigned int llen,ctype_num,i;
1588 const unsigned char *p,*q;
1590 STACK_OF(X509_NAME) *ca_sk=NULL;
1592 n=s->method->ssl_get_message(s,
1593 SSL3_ST_CR_CERT_REQ_A,
1594 SSL3_ST_CR_CERT_REQ_B,
1599 if (!ok) return((int)n);
1601 s->s3->tmp.cert_req=0;
1603 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1605 s->s3->tmp.reuse_message=1;
1609 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1611 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1612 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1616 /* TLS does not like anon-DH with client cert */
1617 if (s->version > SSL3_VERSION)
1619 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1621 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1622 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1627 p=d=(unsigned char *)s->init_msg;
1629 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1631 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1635 /* get the certificate types */
1637 if (ctype_num > SSL3_CT_NUMBER)
1638 ctype_num=SSL3_CT_NUMBER;
1639 for (i=0; i<ctype_num; i++)
1640 s->s3->tmp.ctype[i]= p[i];
1643 /* get the CA RDNs */
1648 out=fopen("/tmp/vsign.der","w");
1649 fwrite(p,1,llen,out);
1654 if ((llen+ctype_num+2+1) != n)
1656 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1657 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1661 for (nc=0; nc<llen; )
1664 if ((l+nc+2) > llen)
1666 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1667 goto cont; /* netscape bugs */
1668 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1669 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1675 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1677 /* If netscape tolerance is on, ignore errors */
1678 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1682 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1683 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1690 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1691 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1694 if (!sk_X509_NAME_push(ca_sk,xn))
1696 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1710 /* we should setup a certificate to return.... */
1711 s->s3->tmp.cert_req=1;
1712 s->s3->tmp.ctype_num=ctype_num;
1713 if (s->s3->tmp.ca_names != NULL)
1714 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1715 s->s3->tmp.ca_names=ca_sk;
1720 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1724 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1726 return(X509_NAME_cmp(*a,*b));
1728 #ifndef OPENSSL_NO_TLSEXT
1729 int ssl3_get_new_session_ticket(SSL *s)
1731 int ok,al,ret=0, ticklen;
1733 const unsigned char *p;
1736 n=s->method->ssl_get_message(s,
1737 SSL3_ST_CR_SESSION_TICKET_A,
1738 SSL3_ST_CR_SESSION_TICKET_B,
1746 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1748 s->s3->tmp.reuse_message=1;
1751 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1753 al=SSL_AD_UNEXPECTED_MESSAGE;
1754 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1759 /* need at least ticket_lifetime_hint + ticket length */
1760 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1761 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1764 p=d=(unsigned char *)s->init_msg;
1765 n2l(p, s->session->tlsext_tick_lifetime_hint);
1767 /* ticket_lifetime_hint + ticket_length + ticket */
1768 if (ticklen + 6 != n)
1770 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1771 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1774 if (s->session->tlsext_tick)
1776 OPENSSL_free(s->session->tlsext_tick);
1777 s->session->tlsext_ticklen = 0;
1779 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1780 if (!s->session->tlsext_tick)
1782 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1785 memcpy(s->session->tlsext_tick, p, ticklen);
1786 s->session->tlsext_ticklen = ticklen;
1791 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1797 int ssl3_get_server_done(SSL *s)
1802 n=s->method->ssl_get_message(s,
1803 SSL3_ST_CR_SRVR_DONE_A,
1804 SSL3_ST_CR_SRVR_DONE_B,
1805 SSL3_MT_SERVER_DONE,
1806 30, /* should be very small, like 0 :-) */
1809 if (!ok) return((int)n);
1812 /* should contain no data */
1813 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1814 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1822 int ssl3_send_client_key_exchange(SSL *s)
1824 unsigned char *p,*d;
1826 unsigned long alg_k;
1827 #ifndef OPENSSL_NO_RSA
1829 EVP_PKEY *pkey=NULL;
1831 #ifndef OPENSSL_NO_KRB5
1833 #endif /* OPENSSL_NO_KRB5 */
1834 #ifndef OPENSSL_NO_ECDH
1835 EC_KEY *clnt_ecdh = NULL;
1836 const EC_POINT *srvr_ecpoint = NULL;
1837 EVP_PKEY *srvr_pub_pkey = NULL;
1838 unsigned char *encodedPoint = NULL;
1839 int encoded_pt_len = 0;
1840 BN_CTX * bn_ctx = NULL;
1843 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1845 d=(unsigned char *)s->init_buf->data;
1848 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1850 /* Fool emacs indentation */
1852 #ifndef OPENSSL_NO_RSA
1853 else if (alg_k & SSL_kRSA)
1856 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1858 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1859 rsa=s->session->sess_cert->peer_rsa_tmp;
1862 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1863 if ((pkey == NULL) ||
1864 (pkey->type != EVP_PKEY_RSA) ||
1865 (pkey->pkey.rsa == NULL))
1867 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1871 EVP_PKEY_free(pkey);
1874 tmp_buf[0]=s->client_version>>8;
1875 tmp_buf[1]=s->client_version&0xff;
1876 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1879 s->session->master_key_length=sizeof tmp_buf;
1882 /* Fix buf for TLS and beyond */
1883 if (s->version > SSL3_VERSION)
1885 n=RSA_public_encrypt(sizeof tmp_buf,
1886 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1888 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1889 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1893 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1897 /* Fix buf for TLS and beyond */
1898 if (s->version > SSL3_VERSION)
1904 s->session->master_key_length=
1905 s->method->ssl3_enc->generate_master_secret(s,
1906 s->session->master_key,
1907 tmp_buf,sizeof tmp_buf);
1908 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1911 #ifndef OPENSSL_NO_KRB5
1912 else if (alg_k & SSL_kKRB5)
1914 krb5_error_code krb5rc;
1915 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1916 /* krb5_data krb5_ap_req; */
1917 krb5_data *enc_ticket;
1918 krb5_data authenticator, *authp = NULL;
1919 EVP_CIPHER_CTX ciph_ctx;
1920 EVP_CIPHER *enc = NULL;
1921 unsigned char iv[EVP_MAX_IV_LENGTH];
1922 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1923 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1924 + EVP_MAX_IV_LENGTH];
1925 int padl, outl = sizeof(epms);
1927 EVP_CIPHER_CTX_init(&ciph_ctx);
1930 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1932 #endif /* KSSL_DEBUG */
1936 if (KRB5SENDAUTH) authp = &authenticator;
1937 #endif /* KRB5SENDAUTH */
1939 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1941 enc = kssl_map_enc(kssl_ctx->enctype);
1946 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1947 if (krb5rc && kssl_err.text)
1948 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1950 #endif /* KSSL_DEBUG */
1954 ssl3_send_alert(s,SSL3_AL_FATAL,
1955 SSL_AD_HANDSHAKE_FAILURE);
1956 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1961 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1962 ** in place of RFC 2712 KerberosWrapper, as in:
1964 ** Send ticket (copy to *p, set n = length)
1965 ** n = krb5_ap_req.length;
1966 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1967 ** if (krb5_ap_req.data)
1968 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1970 ** Now using real RFC 2712 KerberosWrapper
1971 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1972 ** Note: 2712 "opaque" types are here replaced
1973 ** with a 2-byte length followed by the value.
1975 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1976 ** Where "xx xx" = length bytes. Shown here with
1977 ** optional authenticator omitted.
1980 /* KerberosWrapper.Ticket */
1981 s2n(enc_ticket->length,p);
1982 memcpy(p, enc_ticket->data, enc_ticket->length);
1983 p+= enc_ticket->length;
1984 n = enc_ticket->length + 2;
1986 /* KerberosWrapper.Authenticator */
1987 if (authp && authp->length)
1989 s2n(authp->length,p);
1990 memcpy(p, authp->data, authp->length);
1992 n+= authp->length + 2;
2000 s2n(0,p);/* null authenticator length */
2004 tmp_buf[0]=s->client_version>>8;
2005 tmp_buf[1]=s->client_version&0xff;
2006 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2009 /* 20010420 VRS. Tried it this way; failed.
2010 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2011 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2012 ** kssl_ctx->length);
2013 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2016 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2017 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2019 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2021 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2023 if (outl > sizeof epms)
2025 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2028 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2030 /* KerberosWrapper.EncryptedPreMasterSecret */
2032 memcpy(p, epms, outl);
2036 s->session->master_key_length=
2037 s->method->ssl3_enc->generate_master_secret(s,
2038 s->session->master_key,
2039 tmp_buf, sizeof tmp_buf);
2041 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2042 OPENSSL_cleanse(epms, outl);
2045 #ifndef OPENSSL_NO_DH
2046 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2048 DH *dh_srvr,*dh_clnt;
2050 if (s->session->sess_cert->peer_dh_tmp != NULL)
2051 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2054 /* we get them from the cert */
2055 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2056 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2060 /* generate a new random key */
2061 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2063 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2066 if (!DH_generate_key(dh_clnt))
2068 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2072 /* use the 'p' output buffer for the DH key, but
2073 * make sure to clear it out afterwards */
2075 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2079 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2083 /* generate master key from the result */
2084 s->session->master_key_length=
2085 s->method->ssl3_enc->generate_master_secret(s,
2086 s->session->master_key,p,n);
2090 /* send off the data */
2091 n=BN_num_bytes(dh_clnt->pub_key);
2093 BN_bn2bin(dh_clnt->pub_key,p);
2098 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2102 #ifndef OPENSSL_NO_ECDH
2103 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2105 const EC_GROUP *srvr_group = NULL;
2107 int ecdh_clnt_cert = 0;
2110 /* Did we send out the client's
2111 * ECDH share for use in premaster
2112 * computation as part of client certificate?
2113 * If so, set ecdh_clnt_cert to 1.
2115 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2117 /* XXX: For now, we do not support client
2118 * authentication using ECDH certificates.
2119 * To add such support, one needs to add
2120 * code that checks for appropriate
2121 * conditions and sets ecdh_clnt_cert to 1.
2122 * For example, the cert have an ECC
2123 * key on the same curve as the server's
2124 * and the key should be authorized for
2127 * One also needs to add code in ssl3_connect
2128 * to skip sending the certificate verify
2131 * if ((s->cert->key->privatekey != NULL) &&
2132 * (s->cert->key->privatekey->type ==
2133 * EVP_PKEY_EC) && ...)
2134 * ecdh_clnt_cert = 1;
2138 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2140 tkey = s->session->sess_cert->peer_ecdh_tmp;
2144 /* Get the Server Public Key from Cert */
2145 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2146 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2147 if ((srvr_pub_pkey == NULL) ||
2148 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2149 (srvr_pub_pkey->pkey.ec == NULL))
2151 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2152 ERR_R_INTERNAL_ERROR);
2156 tkey = srvr_pub_pkey->pkey.ec;
2159 srvr_group = EC_KEY_get0_group(tkey);
2160 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2162 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2164 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2165 ERR_R_INTERNAL_ERROR);
2169 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2171 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2175 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2177 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2182 /* Reuse key info from our certificate
2183 * We only need our private key to perform
2184 * the ECDH computation.
2186 const BIGNUM *priv_key;
2187 tkey = s->cert->key->privatekey->pkey.ec;
2188 priv_key = EC_KEY_get0_private_key(tkey);
2189 if (priv_key == NULL)
2191 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2194 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2196 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2202 /* Generate a new ECDH key pair */
2203 if (!(EC_KEY_generate_key(clnt_ecdh)))
2205 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2210 /* use the 'p' output buffer for the ECDH key, but
2211 * make sure to clear it out afterwards
2214 field_size = EC_GROUP_get_degree(srvr_group);
2215 if (field_size <= 0)
2217 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2221 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2224 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2229 /* generate master key from the result */
2230 s->session->master_key_length = s->method->ssl3_enc \
2231 -> generate_master_secret(s,
2232 s->session->master_key,
2235 memset(p, 0, n); /* clean up */
2239 /* Send empty client key exch message */
2244 /* First check the size of encoding and
2245 * allocate memory accordingly.
2248 EC_POINT_point2oct(srvr_group,
2249 EC_KEY_get0_public_key(clnt_ecdh),
2250 POINT_CONVERSION_UNCOMPRESSED,
2253 encodedPoint = (unsigned char *)
2254 OPENSSL_malloc(encoded_pt_len *
2255 sizeof(unsigned char));
2256 bn_ctx = BN_CTX_new();
2257 if ((encodedPoint == NULL) ||
2260 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2264 /* Encode the public key */
2265 n = EC_POINT_point2oct(srvr_group,
2266 EC_KEY_get0_public_key(clnt_ecdh),
2267 POINT_CONVERSION_UNCOMPRESSED,
2268 encodedPoint, encoded_pt_len, bn_ctx);
2270 *p = n; /* length of encoded point */
2271 /* Encoded point will be copied here */
2273 /* copy the point */
2274 memcpy((unsigned char *)p, encodedPoint, n);
2275 /* increment n to account for length field */
2279 /* Free allocated memory */
2280 BN_CTX_free(bn_ctx);
2281 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2282 if (clnt_ecdh != NULL)
2283 EC_KEY_free(clnt_ecdh);
2284 EVP_PKEY_free(srvr_pub_pkey);
2286 #endif /* !OPENSSL_NO_ECDH */
2287 #ifndef OPENSSL_NO_PSK
2288 else if (alg_k & SSL_kPSK)
2290 char identity[PSK_MAX_IDENTITY_LEN];
2291 unsigned char *t = NULL;
2292 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2293 unsigned int pre_ms_len = 0, psk_len = 0;
2297 if (s->psk_client_callback == NULL)
2299 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2300 SSL_R_PSK_NO_CLIENT_CB);
2304 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2305 identity, PSK_MAX_IDENTITY_LEN,
2306 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2307 if (psk_len > PSK_MAX_PSK_LEN)
2309 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2310 ERR_R_INTERNAL_ERROR);
2313 else if (psk_len == 0)
2315 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2316 SSL_R_PSK_IDENTITY_NOT_FOUND);
2320 /* create PSK pre_master_secret */
2321 pre_ms_len = 2+psk_len+2+psk_len;
2323 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2325 memset(t, 0, psk_len);
2329 if (s->session->psk_identity_hint != NULL)
2330 OPENSSL_free(s->session->psk_identity_hint);
2331 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2332 if (s->ctx->psk_identity_hint != NULL &&
2333 s->session->psk_identity_hint == NULL)
2335 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2336 ERR_R_MALLOC_FAILURE);
2340 if (s->session->psk_identity != NULL)
2341 OPENSSL_free(s->session->psk_identity);
2342 s->session->psk_identity = BUF_strdup(identity);
2343 if (s->session->psk_identity == NULL)
2345 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2346 ERR_R_MALLOC_FAILURE);
2350 s->session->master_key_length =
2351 s->method->ssl3_enc->generate_master_secret(s,
2352 s->session->master_key,
2353 psk_or_pre_ms, pre_ms_len);
2354 n = strlen(identity);
2356 memcpy(p, identity, n);
2360 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2361 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2364 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2371 ssl3_send_alert(s, SSL3_AL_FATAL,
2372 SSL_AD_HANDSHAKE_FAILURE);
2373 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2374 ERR_R_INTERNAL_ERROR);
2378 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2381 s->state=SSL3_ST_CW_KEY_EXCH_B;
2382 /* number of bytes to write */
2387 /* SSL3_ST_CW_KEY_EXCH_B */
2388 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2390 #ifndef OPENSSL_NO_ECDH
2391 BN_CTX_free(bn_ctx);
2392 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2393 if (clnt_ecdh != NULL)
2394 EC_KEY_free(clnt_ecdh);
2395 EVP_PKEY_free(srvr_pub_pkey);
2400 int ssl3_send_client_verify(SSL *s)
2402 unsigned char *p,*d;
2403 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2405 #ifndef OPENSSL_NO_RSA
2409 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2413 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2415 d=(unsigned char *)s->init_buf->data;
2417 pkey=s->cert->key->privatekey;
2419 s->method->ssl3_enc->cert_verify_mac(s,
2421 &(data[MD5_DIGEST_LENGTH]));
2423 #ifndef OPENSSL_NO_RSA
2424 if (pkey->type == EVP_PKEY_RSA)
2426 s->method->ssl3_enc->cert_verify_mac(s,
2429 if (RSA_sign(NID_md5_sha1, data,
2430 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2431 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2433 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2441 #ifndef OPENSSL_NO_DSA
2442 if (pkey->type == EVP_PKEY_DSA)
2444 if (!DSA_sign(pkey->save_type,
2445 &(data[MD5_DIGEST_LENGTH]),
2446 SHA_DIGEST_LENGTH,&(p[2]),
2447 (unsigned int *)&j,pkey->pkey.dsa))
2449 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2457 #ifndef OPENSSL_NO_ECDSA
2458 if (pkey->type == EVP_PKEY_EC)
2460 if (!ECDSA_sign(pkey->save_type,
2461 &(data[MD5_DIGEST_LENGTH]),
2462 SHA_DIGEST_LENGTH,&(p[2]),
2463 (unsigned int *)&j,pkey->pkey.ec))
2465 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2475 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2478 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2481 s->state=SSL3_ST_CW_CERT_VRFY_B;
2482 s->init_num=(int)n+4;
2485 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2490 int ssl3_send_client_certificate(SSL *s)
2493 EVP_PKEY *pkey=NULL;
2497 if (s->state == SSL3_ST_CW_CERT_A)
2499 if ((s->cert == NULL) ||
2500 (s->cert->key->x509 == NULL) ||
2501 (s->cert->key->privatekey == NULL))
2502 s->state=SSL3_ST_CW_CERT_B;
2504 s->state=SSL3_ST_CW_CERT_C;
2507 /* We need to get a client cert */
2508 if (s->state == SSL3_ST_CW_CERT_B)
2510 /* If we get an error, we need to
2511 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2512 * We then get retied later */
2514 if (s->ctx->client_cert_cb != NULL)
2515 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2518 s->rwstate=SSL_X509_LOOKUP;
2521 s->rwstate=SSL_NOTHING;
2522 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2524 s->state=SSL3_ST_CW_CERT_B;
2525 if ( !SSL_use_certificate(s,x509) ||
2526 !SSL_use_PrivateKey(s,pkey))
2532 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2535 if (x509 != NULL) X509_free(x509);
2536 if (pkey != NULL) EVP_PKEY_free(pkey);
2539 if (s->version == SSL3_VERSION)
2541 s->s3->tmp.cert_req=0;
2542 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2547 s->s3->tmp.cert_req=2;
2551 /* Ok, we have a cert */
2552 s->state=SSL3_ST_CW_CERT_C;
2555 if (s->state == SSL3_ST_CW_CERT_C)
2557 s->state=SSL3_ST_CW_CERT_D;
2558 l=ssl3_output_cert_chain(s,
2559 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2563 /* SSL3_ST_CW_CERT_D */
2564 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2567 #define has_bits(i,m) (((i)&(m)) == (m))
2569 int ssl3_check_cert_and_algorithm(SSL *s)
2573 EVP_PKEY *pkey=NULL;
2575 #ifndef OPENSSL_NO_RSA
2578 #ifndef OPENSSL_NO_DH
2582 sc=s->session->sess_cert;
2585 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2589 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2590 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2592 /* we don't have a certificate */
2593 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2596 #ifndef OPENSSL_NO_RSA
2597 rsa=s->session->sess_cert->peer_rsa_tmp;
2599 #ifndef OPENSSL_NO_DH
2600 dh=s->session->sess_cert->peer_dh_tmp;
2603 /* This is the passed certificate */
2605 idx=sc->peer_cert_type;
2606 #ifndef OPENSSL_NO_ECDH
2607 if (idx == SSL_PKEY_ECC)
2609 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2610 s->s3->tmp.new_cipher) == 0)
2611 { /* check failed */
2612 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2621 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2622 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2623 EVP_PKEY_free(pkey);
2626 /* Check that we have a certificate if we require one */
2627 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2629 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2632 #ifndef OPENSSL_NO_DSA
2633 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2635 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2639 #ifndef OPENSSL_NO_RSA
2640 if ((alg_k & SSL_kRSA) &&
2641 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2643 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2647 #ifndef OPENSSL_NO_DH
2648 if ((alg_k & SSL_kEDH) &&
2649 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2651 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2654 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2656 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2659 #ifndef OPENSSL_NO_DSA
2660 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2662 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2668 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2670 #ifndef OPENSSL_NO_RSA
2671 if (alg_k & SSL_kRSA)
2674 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2676 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2682 #ifndef OPENSSL_NO_DH
2683 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2686 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2688 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2695 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2701 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2706 /* Check to see if handshake is full or resumed. Usually this is just a
2707 * case of checking to see if a cache hit has occurred. In the case of
2708 * session tickets we have to check the next message to be sure.
2711 #ifndef OPENSSL_NO_TLSEXT
2712 static int ssl3_check_finished(SSL *s)
2716 if (!s->session->tlsext_tick)
2718 /* this function is called when we really expect a Certificate
2719 * message, so permit appropriate message length */
2720 n=s->method->ssl_get_message(s,
2726 if (!ok) return((int)n);
2727 s->s3->tmp.reuse_message = 1;
2728 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2729 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))