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;
828 /* lets get the compression algorithm */
830 #ifdef OPENSSL_NO_COMP
833 al=SSL_AD_ILLEGAL_PARAMETER;
834 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
839 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
842 comp=ssl3_comp_find(s->ctx->comp_methods,j);
844 if ((j != 0) && (comp == NULL))
846 al=SSL_AD_ILLEGAL_PARAMETER;
847 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
852 s->s3->tmp.new_compression=comp;
855 #ifndef OPENSSL_NO_TLSEXT
857 if (s->version > SSL3_VERSION)
859 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
861 /* 'al' set by ssl_parse_serverhello_tlsext */
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
865 if (ssl_check_serverhello_tlsext(s) <= 0)
867 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
875 /* wrong packet length */
876 al=SSL_AD_DECODE_ERROR;
877 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
883 ssl3_send_alert(s,SSL3_AL_FATAL,al);
888 int ssl3_get_server_certificate(SSL *s)
891 unsigned long n,nc,llen,l;
893 const unsigned char *q,*p;
895 STACK_OF(X509) *sk=NULL;
898 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
900 n=s->method->ssl_get_message(s,
907 if (!ok) return((int)n);
909 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
911 s->s3->tmp.reuse_message=1;
915 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
917 al=SSL_AD_UNEXPECTED_MESSAGE;
918 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
921 p=d=(unsigned char *)s->init_msg;
923 if ((sk=sk_X509_new_null()) == NULL)
925 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
932 al=SSL_AD_DECODE_ERROR;
933 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
936 for (nc=0; nc<llen; )
941 al=SSL_AD_DECODE_ERROR;
942 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
947 x=d2i_X509(NULL,&q,l);
950 al=SSL_AD_BAD_CERTIFICATE;
951 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
956 al=SSL_AD_DECODE_ERROR;
957 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
960 if (!sk_X509_push(sk,x))
962 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
970 i=ssl_verify_cert_chain(s,sk);
971 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
972 #ifndef OPENSSL_NO_KRB5
973 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
974 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
975 #endif /* OPENSSL_NO_KRB5 */
978 al=ssl_verify_alarm_type(s->verify_result);
979 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
982 ERR_clear_error(); /* but we keep s->verify_result */
984 sc=ssl_sess_cert_new();
985 if (sc == NULL) goto err;
987 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
988 s->session->sess_cert=sc;
991 /* Inconsistency alert: cert_chain does include the peer's
992 * certificate, which we don't include in s3_srvr.c */
993 x=sk_X509_value(sk,0);
995 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
997 pkey=X509_get_pubkey(x);
999 /* VRS: allow null cert if auth == KRB5 */
1000 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1001 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1005 printf("pkey,x = %p, %p\n", pkey,x);
1006 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1007 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1008 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1009 #endif /* KSSL_DEBUG */
1011 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1015 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1016 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1020 i=ssl_cert_type(x,pkey);
1021 if (need_cert && i < 0)
1025 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1026 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1032 sc->peer_cert_type=i;
1033 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1034 /* Why would the following ever happen?
1035 * We just created sc a couple of lines ago. */
1036 if (sc->peer_pkeys[i].x509 != NULL)
1037 X509_free(sc->peer_pkeys[i].x509);
1038 sc->peer_pkeys[i].x509=x;
1039 sc->peer_key= &(sc->peer_pkeys[i]);
1041 if (s->session->peer != NULL)
1042 X509_free(s->session->peer);
1043 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1048 sc->peer_cert_type=i;
1051 if (s->session->peer != NULL)
1052 X509_free(s->session->peer);
1053 s->session->peer=NULL;
1055 s->session->verify_result = s->verify_result;
1063 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1066 EVP_PKEY_free(pkey);
1068 sk_X509_pop_free(sk,X509_free);
1072 int ssl3_get_key_exchange(SSL *s)
1074 #ifndef OPENSSL_NO_RSA
1075 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1078 unsigned char *param,*p;
1079 int al,i,j,param_len,ok;
1081 EVP_PKEY *pkey=NULL;
1082 #ifndef OPENSSL_NO_RSA
1085 #ifndef OPENSSL_NO_DH
1088 #ifndef OPENSSL_NO_ECDH
1089 EC_KEY *ecdh = NULL;
1090 BN_CTX *bn_ctx = NULL;
1091 EC_POINT *srvr_ecpoint = NULL;
1093 int encoded_pt_len = 0;
1096 /* use same message size as in ssl3_get_certificate_request()
1097 * as ServerKeyExchange message may be skipped */
1098 n=s->method->ssl_get_message(s,
1099 SSL3_ST_CR_KEY_EXCH_A,
1100 SSL3_ST_CR_KEY_EXCH_B,
1104 if (!ok) return((int)n);
1106 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1108 #ifndef OPENSSL_NO_PSK
1109 /* In plain PSK ciphersuite, ServerKeyExchange can be
1110 omitted if no identity hint is sent. Set
1111 session->sess_cert anyway to avoid problems
1113 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1115 s->session->sess_cert=ssl_sess_cert_new();
1116 if (s->ctx->psk_identity_hint)
1117 OPENSSL_free(s->ctx->psk_identity_hint);
1118 s->ctx->psk_identity_hint = NULL;
1121 s->s3->tmp.reuse_message=1;
1125 param=p=(unsigned char *)s->init_msg;
1126 if (s->session->sess_cert != NULL)
1128 #ifndef OPENSSL_NO_RSA
1129 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1131 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1132 s->session->sess_cert->peer_rsa_tmp=NULL;
1135 #ifndef OPENSSL_NO_DH
1136 if (s->session->sess_cert->peer_dh_tmp)
1138 DH_free(s->session->sess_cert->peer_dh_tmp);
1139 s->session->sess_cert->peer_dh_tmp=NULL;
1142 #ifndef OPENSSL_NO_ECDH
1143 if (s->session->sess_cert->peer_ecdh_tmp)
1145 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1146 s->session->sess_cert->peer_ecdh_tmp=NULL;
1152 s->session->sess_cert=ssl_sess_cert_new();
1156 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1157 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1158 EVP_MD_CTX_init(&md_ctx);
1160 #ifndef OPENSSL_NO_PSK
1161 if (alg_k & SSL_kPSK)
1163 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1165 al=SSL_AD_HANDSHAKE_FAILURE;
1168 /* Store PSK identity hint for later use, hint is used
1169 * in ssl3_send_client_key_exchange. Assume that the
1170 * maximum length of a PSK identity hint can be as
1171 * long as the maximum length of a PSK identity. */
1172 if (i > PSK_MAX_IDENTITY_LEN)
1174 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1175 SSL_R_DATA_LENGTH_TOO_LONG);
1180 al=SSL_AD_DECODE_ERROR;
1181 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1182 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1185 /* If received PSK identity hint contains NULL
1186 * characters, the hint is truncated from the first
1187 * NULL. p may not be ending with NULL, so create a
1188 * NULL-terminated string. */
1189 memcpy(tmp_id_hint, p, i);
1190 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1191 if (s->ctx->psk_identity_hint != NULL)
1192 OPENSSL_free(s->ctx->psk_identity_hint);
1193 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1194 if (s->ctx->psk_identity_hint == NULL)
1196 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1204 #endif /* !OPENSSL_NO_PSK */
1205 #ifndef OPENSSL_NO_RSA
1206 if (alg_k & SSL_kRSA)
1208 if ((rsa=RSA_new()) == NULL)
1210 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1217 al=SSL_AD_DECODE_ERROR;
1218 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1221 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1223 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1232 al=SSL_AD_DECODE_ERROR;
1233 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1236 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1238 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1244 /* this should be because we are using an export cipher */
1245 if (alg_a & SSL_aRSA)
1246 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1249 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1252 s->session->sess_cert->peer_rsa_tmp=rsa;
1255 #else /* OPENSSL_NO_RSA */
1259 #ifndef OPENSSL_NO_DH
1260 else if (alg_k & SSL_kEDH)
1262 if ((dh=DH_new()) == NULL)
1264 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1271 al=SSL_AD_DECODE_ERROR;
1272 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1275 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1277 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1286 al=SSL_AD_DECODE_ERROR;
1287 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1290 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1292 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1301 al=SSL_AD_DECODE_ERROR;
1302 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1305 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1307 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1313 #ifndef OPENSSL_NO_RSA
1314 if (alg_a & SSL_aRSA)
1315 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1320 #ifndef OPENSSL_NO_DSA
1321 else if (alg_a & SSL_aDSS)
1322 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1324 /* else anonymous DH, so no certificate or pkey. */
1326 s->session->sess_cert->peer_dh_tmp=dh;
1329 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1331 al=SSL_AD_ILLEGAL_PARAMETER;
1332 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1335 #endif /* !OPENSSL_NO_DH */
1337 #ifndef OPENSSL_NO_ECDH
1338 else if (alg_k & SSL_kEECDH)
1341 const EC_GROUP *group;
1343 if ((ecdh=EC_KEY_new()) == NULL)
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1349 /* Extract elliptic curve parameters and the
1350 * server's ephemeral ECDH public key.
1351 * Keep accumulating lengths of various components in
1352 * param_len and make sure it never exceeds n.
1355 /* XXX: For now we only support named (not generic) curves
1356 * and the ECParameters in this case is just three bytes.
1359 if ((param_len > n) ||
1360 (*p != NAMED_CURVE_TYPE) ||
1361 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1363 al=SSL_AD_INTERNAL_ERROR;
1364 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1368 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1371 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1374 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1376 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1379 EC_GROUP_free(ngroup);
1381 group = EC_KEY_get0_group(ecdh);
1383 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1384 (EC_GROUP_get_degree(group) > 163))
1386 al=SSL_AD_EXPORT_RESTRICTION;
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1393 /* Next, get the encoded ECPoint */
1394 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1395 ((bn_ctx = BN_CTX_new()) == NULL))
1397 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1401 encoded_pt_len = *p; /* length of encoded point */
1403 param_len += (1 + encoded_pt_len);
1404 if ((param_len > n) ||
1405 (EC_POINT_oct2point(group, srvr_ecpoint,
1406 p, encoded_pt_len, bn_ctx) == 0))
1408 al=SSL_AD_DECODE_ERROR;
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1416 /* The ECC/TLS specification does not mention
1417 * the use of DSA to sign ECParameters in the server
1418 * key exchange message. We do support RSA and ECDSA.
1421 #ifndef OPENSSL_NO_RSA
1422 else if (alg_a & SSL_aRSA)
1423 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1425 #ifndef OPENSSL_NO_ECDSA
1426 else if (alg_a & SSL_aECDSA)
1427 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1429 /* else anonymous ECDH, so no certificate or pkey. */
1430 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1431 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1433 BN_CTX_free(bn_ctx);
1434 EC_POINT_free(srvr_ecpoint);
1435 srvr_ecpoint = NULL;
1439 al=SSL_AD_UNEXPECTED_MESSAGE;
1440 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1443 #endif /* !OPENSSL_NO_ECDH */
1446 /* p points to the next byte, there are 'n' bytes left */
1448 /* if it was signed, check the signature */
1453 j=EVP_PKEY_size(pkey);
1455 if ((i != n) || (n > j) || (n <= 0))
1457 /* wrong packet length */
1458 al=SSL_AD_DECODE_ERROR;
1459 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1463 #ifndef OPENSSL_NO_RSA
1464 if (pkey->type == EVP_PKEY_RSA)
1470 for (num=2; num > 0; num--)
1472 EVP_DigestInit_ex(&md_ctx,(num == 2)
1473 ?s->ctx->md5:s->ctx->sha1, NULL);
1474 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1475 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1476 EVP_DigestUpdate(&md_ctx,param,param_len);
1477 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1481 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1485 al=SSL_AD_DECRYPT_ERROR;
1486 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1492 al=SSL_AD_DECRYPT_ERROR;
1493 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1499 #ifndef OPENSSL_NO_DSA
1500 if (pkey->type == EVP_PKEY_DSA)
1503 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1504 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1505 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1506 EVP_VerifyUpdate(&md_ctx,param,param_len);
1507 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1510 al=SSL_AD_DECRYPT_ERROR;
1511 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1517 #ifndef OPENSSL_NO_ECDSA
1518 if (pkey->type == EVP_PKEY_EC)
1520 /* let's do ECDSA */
1521 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1522 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1523 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1524 EVP_VerifyUpdate(&md_ctx,param,param_len);
1525 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1528 al=SSL_AD_DECRYPT_ERROR;
1529 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1536 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1542 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1543 /* aNULL or kPSK do not need public keys */
1545 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1548 /* still data left over */
1551 al=SSL_AD_DECODE_ERROR;
1552 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1556 EVP_PKEY_free(pkey);
1557 EVP_MD_CTX_cleanup(&md_ctx);
1560 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1562 EVP_PKEY_free(pkey);
1563 #ifndef OPENSSL_NO_RSA
1567 #ifndef OPENSSL_NO_DH
1571 #ifndef OPENSSL_NO_ECDH
1572 BN_CTX_free(bn_ctx);
1573 EC_POINT_free(srvr_ecpoint);
1577 EVP_MD_CTX_cleanup(&md_ctx);
1581 int ssl3_get_certificate_request(SSL *s)
1584 unsigned long n,nc,l;
1585 unsigned int llen,ctype_num,i;
1587 const unsigned char *p,*q;
1589 STACK_OF(X509_NAME) *ca_sk=NULL;
1591 n=s->method->ssl_get_message(s,
1592 SSL3_ST_CR_CERT_REQ_A,
1593 SSL3_ST_CR_CERT_REQ_B,
1598 if (!ok) return((int)n);
1600 s->s3->tmp.cert_req=0;
1602 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1604 s->s3->tmp.reuse_message=1;
1608 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1610 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1611 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1615 /* TLS does not like anon-DH with client cert */
1616 if (s->version > SSL3_VERSION)
1618 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1620 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1621 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1626 p=d=(unsigned char *)s->init_msg;
1628 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1630 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1634 /* get the certificate types */
1636 if (ctype_num > SSL3_CT_NUMBER)
1637 ctype_num=SSL3_CT_NUMBER;
1638 for (i=0; i<ctype_num; i++)
1639 s->s3->tmp.ctype[i]= p[i];
1642 /* get the CA RDNs */
1647 out=fopen("/tmp/vsign.der","w");
1648 fwrite(p,1,llen,out);
1653 if ((llen+ctype_num+2+1) != n)
1655 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1656 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1660 for (nc=0; nc<llen; )
1663 if ((l+nc+2) > llen)
1665 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1666 goto cont; /* netscape bugs */
1667 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1668 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1674 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1676 /* If netscape tolerance is on, ignore errors */
1677 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1681 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1682 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1689 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1690 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1693 if (!sk_X509_NAME_push(ca_sk,xn))
1695 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1709 /* we should setup a certificate to return.... */
1710 s->s3->tmp.cert_req=1;
1711 s->s3->tmp.ctype_num=ctype_num;
1712 if (s->s3->tmp.ca_names != NULL)
1713 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1714 s->s3->tmp.ca_names=ca_sk;
1719 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1723 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1725 return(X509_NAME_cmp(*a,*b));
1727 #ifndef OPENSSL_NO_TLSEXT
1728 int ssl3_get_new_session_ticket(SSL *s)
1730 int ok,al,ret=0, ticklen;
1732 const unsigned char *p;
1735 n=s->method->ssl_get_message(s,
1736 SSL3_ST_CR_SESSION_TICKET_A,
1737 SSL3_ST_CR_SESSION_TICKET_B,
1745 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1747 s->s3->tmp.reuse_message=1;
1750 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1752 al=SSL_AD_UNEXPECTED_MESSAGE;
1753 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1758 /* need at least ticket_lifetime_hint + ticket length */
1759 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1760 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1763 p=d=(unsigned char *)s->init_msg;
1764 n2l(p, s->session->tlsext_tick_lifetime_hint);
1766 /* ticket_lifetime_hint + ticket_length + ticket */
1767 if (ticklen + 6 != n)
1769 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1770 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1773 if (s->session->tlsext_tick)
1775 OPENSSL_free(s->session->tlsext_tick);
1776 s->session->tlsext_ticklen = 0;
1778 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1779 if (!s->session->tlsext_tick)
1781 SSLerr(SSL_F_SSL3_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1784 memcpy(s->session->tlsext_tick, p, ticklen);
1785 s->session->tlsext_ticklen = ticklen;
1790 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1796 int ssl3_get_server_done(SSL *s)
1801 n=s->method->ssl_get_message(s,
1802 SSL3_ST_CR_SRVR_DONE_A,
1803 SSL3_ST_CR_SRVR_DONE_B,
1804 SSL3_MT_SERVER_DONE,
1805 30, /* should be very small, like 0 :-) */
1808 if (!ok) return((int)n);
1811 /* should contain no data */
1812 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1813 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1821 int ssl3_send_client_key_exchange(SSL *s)
1823 unsigned char *p,*d;
1825 unsigned long alg_k;
1826 #ifndef OPENSSL_NO_RSA
1828 EVP_PKEY *pkey=NULL;
1830 #ifndef OPENSSL_NO_KRB5
1832 #endif /* OPENSSL_NO_KRB5 */
1833 #ifndef OPENSSL_NO_ECDH
1834 EC_KEY *clnt_ecdh = NULL;
1835 const EC_POINT *srvr_ecpoint = NULL;
1836 EVP_PKEY *srvr_pub_pkey = NULL;
1837 unsigned char *encodedPoint = NULL;
1838 int encoded_pt_len = 0;
1839 BN_CTX * bn_ctx = NULL;
1842 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1844 d=(unsigned char *)s->init_buf->data;
1847 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1849 /* Fool emacs indentation */
1851 #ifndef OPENSSL_NO_RSA
1852 else if (alg_k & SSL_kRSA)
1855 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1857 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1858 rsa=s->session->sess_cert->peer_rsa_tmp;
1861 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1862 if ((pkey == NULL) ||
1863 (pkey->type != EVP_PKEY_RSA) ||
1864 (pkey->pkey.rsa == NULL))
1866 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1870 EVP_PKEY_free(pkey);
1873 tmp_buf[0]=s->client_version>>8;
1874 tmp_buf[1]=s->client_version&0xff;
1875 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1878 s->session->master_key_length=sizeof tmp_buf;
1881 /* Fix buf for TLS and beyond */
1882 if (s->version > SSL3_VERSION)
1884 n=RSA_public_encrypt(sizeof tmp_buf,
1885 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1887 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1888 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1892 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1896 /* Fix buf for TLS and beyond */
1897 if (s->version > SSL3_VERSION)
1903 s->session->master_key_length=
1904 s->method->ssl3_enc->generate_master_secret(s,
1905 s->session->master_key,
1906 tmp_buf,sizeof tmp_buf);
1907 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1910 #ifndef OPENSSL_NO_KRB5
1911 else if (alg_k & SSL_kKRB5)
1913 krb5_error_code krb5rc;
1914 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1915 /* krb5_data krb5_ap_req; */
1916 krb5_data *enc_ticket;
1917 krb5_data authenticator, *authp = NULL;
1918 EVP_CIPHER_CTX ciph_ctx;
1919 EVP_CIPHER *enc = NULL;
1920 unsigned char iv[EVP_MAX_IV_LENGTH];
1921 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1922 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1923 + EVP_MAX_IV_LENGTH];
1924 int padl, outl = sizeof(epms);
1926 EVP_CIPHER_CTX_init(&ciph_ctx);
1929 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1931 #endif /* KSSL_DEBUG */
1935 if (KRB5SENDAUTH) authp = &authenticator;
1936 #endif /* KRB5SENDAUTH */
1938 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1940 enc = kssl_map_enc(kssl_ctx->enctype);
1945 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1946 if (krb5rc && kssl_err.text)
1947 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1949 #endif /* KSSL_DEBUG */
1953 ssl3_send_alert(s,SSL3_AL_FATAL,
1954 SSL_AD_HANDSHAKE_FAILURE);
1955 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1960 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1961 ** in place of RFC 2712 KerberosWrapper, as in:
1963 ** Send ticket (copy to *p, set n = length)
1964 ** n = krb5_ap_req.length;
1965 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1966 ** if (krb5_ap_req.data)
1967 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1969 ** Now using real RFC 2712 KerberosWrapper
1970 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1971 ** Note: 2712 "opaque" types are here replaced
1972 ** with a 2-byte length followed by the value.
1974 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1975 ** Where "xx xx" = length bytes. Shown here with
1976 ** optional authenticator omitted.
1979 /* KerberosWrapper.Ticket */
1980 s2n(enc_ticket->length,p);
1981 memcpy(p, enc_ticket->data, enc_ticket->length);
1982 p+= enc_ticket->length;
1983 n = enc_ticket->length + 2;
1985 /* KerberosWrapper.Authenticator */
1986 if (authp && authp->length)
1988 s2n(authp->length,p);
1989 memcpy(p, authp->data, authp->length);
1991 n+= authp->length + 2;
1999 s2n(0,p);/* null authenticator length */
2003 tmp_buf[0]=s->client_version>>8;
2004 tmp_buf[1]=s->client_version&0xff;
2005 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2008 /* 20010420 VRS. Tried it this way; failed.
2009 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2010 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2011 ** kssl_ctx->length);
2012 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2015 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2016 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2018 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2020 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2022 if (outl > sizeof epms)
2024 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2027 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2029 /* KerberosWrapper.EncryptedPreMasterSecret */
2031 memcpy(p, epms, outl);
2035 s->session->master_key_length=
2036 s->method->ssl3_enc->generate_master_secret(s,
2037 s->session->master_key,
2038 tmp_buf, sizeof tmp_buf);
2040 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2041 OPENSSL_cleanse(epms, outl);
2044 #ifndef OPENSSL_NO_DH
2045 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2047 DH *dh_srvr,*dh_clnt;
2049 if (s->session->sess_cert->peer_dh_tmp != NULL)
2050 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2053 /* we get them from the cert */
2054 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2055 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2059 /* generate a new random key */
2060 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2062 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2065 if (!DH_generate_key(dh_clnt))
2067 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2071 /* use the 'p' output buffer for the DH key, but
2072 * make sure to clear it out afterwards */
2074 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2078 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2082 /* generate master key from the result */
2083 s->session->master_key_length=
2084 s->method->ssl3_enc->generate_master_secret(s,
2085 s->session->master_key,p,n);
2089 /* send off the data */
2090 n=BN_num_bytes(dh_clnt->pub_key);
2092 BN_bn2bin(dh_clnt->pub_key,p);
2097 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2101 #ifndef OPENSSL_NO_ECDH
2102 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2104 const EC_GROUP *srvr_group = NULL;
2106 int ecdh_clnt_cert = 0;
2109 /* Did we send out the client's
2110 * ECDH share for use in premaster
2111 * computation as part of client certificate?
2112 * If so, set ecdh_clnt_cert to 1.
2114 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2116 /* XXX: For now, we do not support client
2117 * authentication using ECDH certificates.
2118 * To add such support, one needs to add
2119 * code that checks for appropriate
2120 * conditions and sets ecdh_clnt_cert to 1.
2121 * For example, the cert have an ECC
2122 * key on the same curve as the server's
2123 * and the key should be authorized for
2126 * One also needs to add code in ssl3_connect
2127 * to skip sending the certificate verify
2130 * if ((s->cert->key->privatekey != NULL) &&
2131 * (s->cert->key->privatekey->type ==
2132 * EVP_PKEY_EC) && ...)
2133 * ecdh_clnt_cert = 1;
2137 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2139 tkey = s->session->sess_cert->peer_ecdh_tmp;
2143 /* Get the Server Public Key from Cert */
2144 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2145 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2146 if ((srvr_pub_pkey == NULL) ||
2147 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2148 (srvr_pub_pkey->pkey.ec == NULL))
2150 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2151 ERR_R_INTERNAL_ERROR);
2155 tkey = srvr_pub_pkey->pkey.ec;
2158 srvr_group = EC_KEY_get0_group(tkey);
2159 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2161 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2163 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2164 ERR_R_INTERNAL_ERROR);
2168 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2170 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2174 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2176 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2181 /* Reuse key info from our certificate
2182 * We only need our private key to perform
2183 * the ECDH computation.
2185 const BIGNUM *priv_key;
2186 tkey = s->cert->key->privatekey->pkey.ec;
2187 priv_key = EC_KEY_get0_private_key(tkey);
2188 if (priv_key == NULL)
2190 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2193 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2195 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2201 /* Generate a new ECDH key pair */
2202 if (!(EC_KEY_generate_key(clnt_ecdh)))
2204 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2209 /* use the 'p' output buffer for the ECDH key, but
2210 * make sure to clear it out afterwards
2213 field_size = EC_GROUP_get_degree(srvr_group);
2214 if (field_size <= 0)
2216 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2220 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2223 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2228 /* generate master key from the result */
2229 s->session->master_key_length = s->method->ssl3_enc \
2230 -> generate_master_secret(s,
2231 s->session->master_key,
2234 memset(p, 0, n); /* clean up */
2238 /* Send empty client key exch message */
2243 /* First check the size of encoding and
2244 * allocate memory accordingly.
2247 EC_POINT_point2oct(srvr_group,
2248 EC_KEY_get0_public_key(clnt_ecdh),
2249 POINT_CONVERSION_UNCOMPRESSED,
2252 encodedPoint = (unsigned char *)
2253 OPENSSL_malloc(encoded_pt_len *
2254 sizeof(unsigned char));
2255 bn_ctx = BN_CTX_new();
2256 if ((encodedPoint == NULL) ||
2259 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2263 /* Encode the public key */
2264 n = EC_POINT_point2oct(srvr_group,
2265 EC_KEY_get0_public_key(clnt_ecdh),
2266 POINT_CONVERSION_UNCOMPRESSED,
2267 encodedPoint, encoded_pt_len, bn_ctx);
2269 *p = n; /* length of encoded point */
2270 /* Encoded point will be copied here */
2272 /* copy the point */
2273 memcpy((unsigned char *)p, encodedPoint, n);
2274 /* increment n to account for length field */
2278 /* Free allocated memory */
2279 BN_CTX_free(bn_ctx);
2280 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2281 if (clnt_ecdh != NULL)
2282 EC_KEY_free(clnt_ecdh);
2283 EVP_PKEY_free(srvr_pub_pkey);
2285 #endif /* !OPENSSL_NO_ECDH */
2286 #ifndef OPENSSL_NO_PSK
2287 else if (alg_k & SSL_kPSK)
2289 char identity[PSK_MAX_IDENTITY_LEN];
2290 unsigned char *t = NULL;
2291 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2292 unsigned int pre_ms_len = 0, psk_len = 0;
2296 if (s->psk_client_callback == NULL)
2298 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2299 SSL_R_PSK_NO_CLIENT_CB);
2303 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2304 identity, PSK_MAX_IDENTITY_LEN,
2305 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2306 if (psk_len > PSK_MAX_PSK_LEN)
2308 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2309 ERR_R_INTERNAL_ERROR);
2312 else if (psk_len == 0)
2314 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2315 SSL_R_PSK_IDENTITY_NOT_FOUND);
2319 /* create PSK pre_master_secret */
2320 pre_ms_len = 2+psk_len+2+psk_len;
2322 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2324 memset(t, 0, psk_len);
2328 if (s->session->psk_identity_hint != NULL)
2329 OPENSSL_free(s->session->psk_identity_hint);
2330 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2331 if (s->ctx->psk_identity_hint != NULL &&
2332 s->session->psk_identity_hint == NULL)
2334 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2335 ERR_R_MALLOC_FAILURE);
2339 if (s->session->psk_identity != NULL)
2340 OPENSSL_free(s->session->psk_identity);
2341 s->session->psk_identity = BUF_strdup(identity);
2342 if (s->session->psk_identity == NULL)
2344 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2345 ERR_R_MALLOC_FAILURE);
2349 s->session->master_key_length =
2350 s->method->ssl3_enc->generate_master_secret(s,
2351 s->session->master_key,
2352 psk_or_pre_ms, pre_ms_len);
2353 n = strlen(identity);
2355 memcpy(p, identity, n);
2359 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2360 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2363 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2370 ssl3_send_alert(s, SSL3_AL_FATAL,
2371 SSL_AD_HANDSHAKE_FAILURE);
2372 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2373 ERR_R_INTERNAL_ERROR);
2377 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2380 s->state=SSL3_ST_CW_KEY_EXCH_B;
2381 /* number of bytes to write */
2386 /* SSL3_ST_CW_KEY_EXCH_B */
2387 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2389 #ifndef OPENSSL_NO_ECDH
2390 BN_CTX_free(bn_ctx);
2391 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2392 if (clnt_ecdh != NULL)
2393 EC_KEY_free(clnt_ecdh);
2394 EVP_PKEY_free(srvr_pub_pkey);
2399 int ssl3_send_client_verify(SSL *s)
2401 unsigned char *p,*d;
2402 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2404 #ifndef OPENSSL_NO_RSA
2408 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2412 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2414 d=(unsigned char *)s->init_buf->data;
2416 pkey=s->cert->key->privatekey;
2418 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2419 &(data[MD5_DIGEST_LENGTH]));
2421 #ifndef OPENSSL_NO_RSA
2422 if (pkey->type == EVP_PKEY_RSA)
2424 s->method->ssl3_enc->cert_verify_mac(s,
2425 &(s->s3->finish_dgst1),&(data[0]));
2426 if (RSA_sign(NID_md5_sha1, data,
2427 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2428 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2430 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2438 #ifndef OPENSSL_NO_DSA
2439 if (pkey->type == EVP_PKEY_DSA)
2441 if (!DSA_sign(pkey->save_type,
2442 &(data[MD5_DIGEST_LENGTH]),
2443 SHA_DIGEST_LENGTH,&(p[2]),
2444 (unsigned int *)&j,pkey->pkey.dsa))
2446 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2454 #ifndef OPENSSL_NO_ECDSA
2455 if (pkey->type == EVP_PKEY_EC)
2457 if (!ECDSA_sign(pkey->save_type,
2458 &(data[MD5_DIGEST_LENGTH]),
2459 SHA_DIGEST_LENGTH,&(p[2]),
2460 (unsigned int *)&j,pkey->pkey.ec))
2462 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2472 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2475 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2478 s->state=SSL3_ST_CW_CERT_VRFY_B;
2479 s->init_num=(int)n+4;
2482 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2487 int ssl3_send_client_certificate(SSL *s)
2490 EVP_PKEY *pkey=NULL;
2494 if (s->state == SSL3_ST_CW_CERT_A)
2496 if ((s->cert == NULL) ||
2497 (s->cert->key->x509 == NULL) ||
2498 (s->cert->key->privatekey == NULL))
2499 s->state=SSL3_ST_CW_CERT_B;
2501 s->state=SSL3_ST_CW_CERT_C;
2504 /* We need to get a client cert */
2505 if (s->state == SSL3_ST_CW_CERT_B)
2507 /* If we get an error, we need to
2508 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2509 * We then get retied later */
2511 if (s->ctx->client_cert_cb != NULL)
2512 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2515 s->rwstate=SSL_X509_LOOKUP;
2518 s->rwstate=SSL_NOTHING;
2519 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2521 s->state=SSL3_ST_CW_CERT_B;
2522 if ( !SSL_use_certificate(s,x509) ||
2523 !SSL_use_PrivateKey(s,pkey))
2529 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2532 if (x509 != NULL) X509_free(x509);
2533 if (pkey != NULL) EVP_PKEY_free(pkey);
2536 if (s->version == SSL3_VERSION)
2538 s->s3->tmp.cert_req=0;
2539 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2544 s->s3->tmp.cert_req=2;
2548 /* Ok, we have a cert */
2549 s->state=SSL3_ST_CW_CERT_C;
2552 if (s->state == SSL3_ST_CW_CERT_C)
2554 s->state=SSL3_ST_CW_CERT_D;
2555 l=ssl3_output_cert_chain(s,
2556 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2560 /* SSL3_ST_CW_CERT_D */
2561 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2564 #define has_bits(i,m) (((i)&(m)) == (m))
2566 int ssl3_check_cert_and_algorithm(SSL *s)
2570 EVP_PKEY *pkey=NULL;
2572 #ifndef OPENSSL_NO_RSA
2575 #ifndef OPENSSL_NO_DH
2579 sc=s->session->sess_cert;
2582 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2586 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2587 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2589 /* we don't have a certificate */
2590 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2593 #ifndef OPENSSL_NO_RSA
2594 rsa=s->session->sess_cert->peer_rsa_tmp;
2596 #ifndef OPENSSL_NO_DH
2597 dh=s->session->sess_cert->peer_dh_tmp;
2600 /* This is the passed certificate */
2602 idx=sc->peer_cert_type;
2603 #ifndef OPENSSL_NO_ECDH
2604 if (idx == SSL_PKEY_ECC)
2606 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2607 s->s3->tmp.new_cipher) == 0)
2608 { /* check failed */
2609 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2618 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2619 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2620 EVP_PKEY_free(pkey);
2623 /* Check that we have a certificate if we require one */
2624 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2626 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2629 #ifndef OPENSSL_NO_DSA
2630 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2632 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2636 #ifndef OPENSSL_NO_RSA
2637 if ((alg_k & SSL_kRSA) &&
2638 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2640 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2644 #ifndef OPENSSL_NO_DH
2645 if ((alg_k & SSL_kEDH) &&
2646 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2648 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2651 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2653 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2656 #ifndef OPENSSL_NO_DSA
2657 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2659 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2665 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2667 #ifndef OPENSSL_NO_RSA
2668 if (alg_k & SSL_kRSA)
2671 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2673 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2679 #ifndef OPENSSL_NO_DH
2680 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2683 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2685 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2692 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2698 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2703 /* Check to see if handshake is full or resumed. Usually this is just a
2704 * case of checking to see if a cache hit has occurred. In the case of
2705 * session tickets we have to check the next message to be sure.
2708 #ifndef OPENSSL_NO_TLSEXT
2709 static int ssl3_check_finished(SSL *s)
2713 if (!s->session->tlsext_tick)
2715 /* this function is called when we really expect a Certificate
2716 * message, so permit appropriate message length */
2717 n=s->method->ssl_get_message(s,
2723 if (!ok) return((int)n);
2724 s->s3->tmp.reuse_message = 1;
2725 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2726 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))