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 if (s->tlsext_ticket_expected)
299 s->state=SSL3_ST_CR_SESSION_TICKET_A;
301 s->state=SSL3_ST_CR_FINISHED_A;
306 /* Check if it is anon DH/ECDH */
308 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
309 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
311 ret=ssl3_get_server_certificate(s);
312 if (ret <= 0) goto end;
313 #ifndef OPENSSL_NO_TLSEXT
314 if (s->tlsext_status_expected)
315 s->state=SSL3_ST_CR_CERT_STATUS_A;
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
322 s->state=SSL3_ST_CR_KEY_EXCH_A;
329 s->state=SSL3_ST_CR_KEY_EXCH_A;
334 case SSL3_ST_CR_KEY_EXCH_A:
335 case SSL3_ST_CR_KEY_EXCH_B:
336 ret=ssl3_get_key_exchange(s);
337 if (ret <= 0) goto end;
338 s->state=SSL3_ST_CR_CERT_REQ_A;
341 /* at this point we check that we have the
342 * required stuff from the server */
343 if (!ssl3_check_cert_and_algorithm(s))
350 case SSL3_ST_CR_CERT_REQ_A:
351 case SSL3_ST_CR_CERT_REQ_B:
352 ret=ssl3_get_certificate_request(s);
353 if (ret <= 0) goto end;
354 s->state=SSL3_ST_CR_SRVR_DONE_A;
358 case SSL3_ST_CR_SRVR_DONE_A:
359 case SSL3_ST_CR_SRVR_DONE_B:
360 ret=ssl3_get_server_done(s);
361 if (ret <= 0) goto end;
362 if (s->s3->tmp.cert_req)
363 s->state=SSL3_ST_CW_CERT_A;
365 s->state=SSL3_ST_CW_KEY_EXCH_A;
370 case SSL3_ST_CW_CERT_A:
371 case SSL3_ST_CW_CERT_B:
372 case SSL3_ST_CW_CERT_C:
373 case SSL3_ST_CW_CERT_D:
374 ret=ssl3_send_client_certificate(s);
375 if (ret <= 0) goto end;
376 s->state=SSL3_ST_CW_KEY_EXCH_A;
380 case SSL3_ST_CW_KEY_EXCH_A:
381 case SSL3_ST_CW_KEY_EXCH_B:
382 ret=ssl3_send_client_key_exchange(s);
383 if (ret <= 0) goto end;
384 /* EAY EAY EAY need to check for DH fix cert
386 /* For TLS, cert_req is set to 2, so a cert chain
387 * of nothing is sent, but no verify packet is sent */
388 /* XXX: For now, we do not support client
389 * authentication in ECDH cipher suites with
390 * ECDH (rather than ECDSA) certificates.
391 * We need to skip the certificate verify
392 * message when client's ECDH public key is sent
393 * inside the client certificate.
395 if (s->s3->tmp.cert_req == 1)
397 s->state=SSL3_ST_CW_CERT_VRFY_A;
401 s->state=SSL3_ST_CW_CHANGE_A;
402 s->s3->change_cipher_spec=0;
408 case SSL3_ST_CW_CERT_VRFY_A:
409 case SSL3_ST_CW_CERT_VRFY_B:
410 ret=ssl3_send_client_verify(s);
411 if (ret <= 0) goto end;
412 s->state=SSL3_ST_CW_CHANGE_A;
414 s->s3->change_cipher_spec=0;
417 case SSL3_ST_CW_CHANGE_A:
418 case SSL3_ST_CW_CHANGE_B:
419 ret=ssl3_send_change_cipher_spec(s,
420 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
421 if (ret <= 0) goto end;
422 s->state=SSL3_ST_CW_FINISHED_A;
425 s->session->cipher=s->s3->tmp.new_cipher;
426 #ifdef OPENSSL_NO_COMP
427 s->session->compress_meth=0;
429 if (s->s3->tmp.new_compression == NULL)
430 s->session->compress_meth=0;
432 s->session->compress_meth=
433 s->s3->tmp.new_compression->id;
435 if (!s->method->ssl3_enc->setup_key_block(s))
441 if (!s->method->ssl3_enc->change_cipher_state(s,
442 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
450 case SSL3_ST_CW_FINISHED_A:
451 case SSL3_ST_CW_FINISHED_B:
452 ret=ssl3_send_finished(s,
453 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
454 s->method->ssl3_enc->client_finished_label,
455 s->method->ssl3_enc->client_finished_label_len);
456 if (ret <= 0) goto end;
457 s->state=SSL3_ST_CW_FLUSH;
460 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
463 s->s3->tmp.next_state=SSL_ST_OK;
464 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
467 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
468 s->s3->delay_buf_pop_ret=0;
473 #ifndef OPENSSL_NO_TLSEXT
474 /* Allow NewSessionTicket if ticket expected */
475 if (s->tlsext_ticket_expected)
476 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
480 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
485 #ifndef OPENSSL_NO_TLSEXT
486 case SSL3_ST_CR_SESSION_TICKET_A:
487 case SSL3_ST_CR_SESSION_TICKET_B:
488 ret=ssl3_get_new_session_ticket(s);
489 if (ret <= 0) goto end;
490 s->state=SSL3_ST_CR_FINISHED_A;
494 case SSL3_ST_CR_CERT_STATUS_A:
495 case SSL3_ST_CR_CERT_STATUS_B:
496 ret=ssl3_get_cert_status(s);
497 if (ret <= 0) goto end;
498 s->state=SSL3_ST_CR_KEY_EXCH_A;
503 case SSL3_ST_CR_FINISHED_A:
504 case SSL3_ST_CR_FINISHED_B:
506 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
507 SSL3_ST_CR_FINISHED_B);
508 if (ret <= 0) goto end;
511 s->state=SSL3_ST_CW_CHANGE_A;
517 case SSL3_ST_CW_FLUSH:
518 /* number of bytes to be flushed */
519 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
522 s->rwstate=SSL_WRITING;
523 num1=BIO_flush(s->wbio);
524 if (num1 <= 0) { ret= -1; goto end; }
525 s->rwstate=SSL_NOTHING;
528 s->state=s->s3->tmp.next_state;
532 /* clean a few things up */
533 ssl3_cleanup_key_block(s);
535 if (s->init_buf != NULL)
537 BUF_MEM_free(s->init_buf);
541 /* If we are not 'joining' the last two packets,
542 * remove the buffering now */
543 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
544 ssl_free_wbio_buffer(s);
545 /* else do it later in ssl3_write */
550 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
551 if (s->hit) s->ctx->stats.sess_hit++;
555 s->handshake_func=ssl3_connect;
556 s->ctx->stats.sess_connect_good++;
558 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
564 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
570 /* did we do anything */
571 if (!s->s3->tmp.reuse_message && !skip)
575 if ((ret=BIO_flush(s->wbio)) <= 0)
579 if ((cb != NULL) && (s->state != state))
583 cb(s,SSL_CB_CONNECT_LOOP,1);
594 cb(s,SSL_CB_CONNECT_EXIT,ret);
599 int ssl3_client_hello(SSL *s)
604 unsigned long Time,l;
605 #ifndef OPENSSL_NO_COMP
610 buf=(unsigned char *)s->init_buf->data;
611 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
613 if ((s->session == NULL) ||
614 (s->session->ssl_version != s->version) ||
615 (s->session->not_resumable))
617 if (!ssl_get_new_session(s,0))
620 /* else use the pre-loaded session */
622 p=s->s3->client_random;
623 Time=(unsigned long)time(NULL); /* Time */
625 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
628 /* Do the message type and length last */
631 *(p++)=s->version>>8;
632 *(p++)=s->version&0xff;
633 s->client_version=s->version;
636 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
643 i=s->session->session_id_length;
647 if (i > (int)sizeof(s->session->session_id))
649 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
652 memcpy(p,s->session->session_id,i);
656 /* Ciphers supported */
657 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
660 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
667 #ifdef OPENSSL_NO_COMP
671 if ((s->options & SSL_OP_NO_COMPRESSION)
672 || !s->ctx->comp_methods)
675 j=sk_SSL_COMP_num(s->ctx->comp_methods);
679 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
683 *(p++)=0; /* Add the NULL method */
685 #ifndef OPENSSL_NO_TLSEXT
687 if (ssl_prepare_clienthello_tlsext(s) <= 0)
689 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
692 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
694 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
701 *(d++)=SSL3_MT_CLIENT_HELLO;
704 s->state=SSL3_ST_CW_CLNT_HELLO_B;
705 /* number of bytes to write */
710 /* SSL3_ST_CW_CLNT_HELLO_B */
711 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
716 int ssl3_get_server_hello(SSL *s)
718 STACK_OF(SSL_CIPHER) *sk;
724 #ifndef OPENSSL_NO_COMP
728 n=s->method->ssl_get_message(s,
729 SSL3_ST_CR_SRVR_HELLO_A,
730 SSL3_ST_CR_SRVR_HELLO_B,
735 if (!ok) return((int)n);
737 if ( SSL_version(s) == DTLS1_VERSION)
739 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
741 if ( s->d1->send_cookie == 0)
743 s->s3->tmp.reuse_message = 1;
746 else /* already sent a cookie */
748 al=SSL_AD_UNEXPECTED_MESSAGE;
749 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
755 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
757 al=SSL_AD_UNEXPECTED_MESSAGE;
758 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
762 d=p=(unsigned char *)s->init_msg;
764 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
766 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
767 s->version=(s->version&0xff00)|p[1];
768 al=SSL_AD_PROTOCOL_VERSION;
773 /* load the server hello data */
774 /* load the server random */
775 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
778 /* get the session-id */
781 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
783 al=SSL_AD_ILLEGAL_PARAMETER;
784 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
788 if (j != 0 && j == s->session->session_id_length
789 && memcmp(p,s->session->session_id,j) == 0)
791 if(s->sid_ctx_length != s->session->sid_ctx_length
792 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
794 /* actually a client application bug */
795 al=SSL_AD_ILLEGAL_PARAMETER;
796 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
801 else /* a miss or crap from the other end */
803 /* If we were trying for session-id reuse, make a new
804 * SSL_SESSION so we don't stuff up other people */
806 if (s->session->session_id_length > 0)
808 if (!ssl_get_new_session(s,0))
810 al=SSL_AD_INTERNAL_ERROR;
814 s->session->session_id_length=j;
815 memcpy(s->session->session_id,p,j); /* j could be 0 */
818 c=ssl_get_cipher_by_char(s,p);
822 al=SSL_AD_ILLEGAL_PARAMETER;
823 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
826 p+=ssl_put_cipher_by_char(s,NULL,NULL);
828 sk=ssl_get_ciphers_by_id(s);
829 i=sk_SSL_CIPHER_find(sk,c);
832 /* we did not say we would use this cipher */
833 al=SSL_AD_ILLEGAL_PARAMETER;
834 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
838 /* Depending on the session caching (internal/external), the cipher
839 and/or cipher_id values may not be set. Make sure that
840 cipher_id is set and use it for comparison. */
841 if (s->session->cipher)
842 s->session->cipher_id = s->session->cipher->id;
843 if (s->hit && (s->session->cipher_id != c->id))
846 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
848 al=SSL_AD_ILLEGAL_PARAMETER;
849 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
853 s->s3->tmp.new_cipher=c;
854 ssl3_digest_cached_records(s);
856 /* lets get the compression algorithm */
858 #ifdef OPENSSL_NO_COMP
861 al=SSL_AD_ILLEGAL_PARAMETER;
862 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
867 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
870 comp=ssl3_comp_find(s->ctx->comp_methods,j);
872 if ((j != 0) && (comp == NULL))
874 al=SSL_AD_ILLEGAL_PARAMETER;
875 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
880 s->s3->tmp.new_compression=comp;
884 #ifndef OPENSSL_NO_TLSEXT
886 if (s->version > SSL3_VERSION)
888 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
890 /* 'al' set by ssl_parse_serverhello_tlsext */
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
894 if (ssl_check_serverhello_tlsext(s) <= 0)
896 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
904 /* wrong packet length */
905 al=SSL_AD_DECODE_ERROR;
906 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
912 ssl3_send_alert(s,SSL3_AL_FATAL,al);
917 int ssl3_get_server_certificate(SSL *s)
920 unsigned long n,nc,llen,l;
922 const unsigned char *q,*p;
924 STACK_OF(X509) *sk=NULL;
927 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
929 n=s->method->ssl_get_message(s,
936 if (!ok) return((int)n);
938 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
940 s->s3->tmp.reuse_message=1;
944 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
946 al=SSL_AD_UNEXPECTED_MESSAGE;
947 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
950 p=d=(unsigned char *)s->init_msg;
952 if ((sk=sk_X509_new_null()) == NULL)
954 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
961 al=SSL_AD_DECODE_ERROR;
962 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
965 for (nc=0; nc<llen; )
970 al=SSL_AD_DECODE_ERROR;
971 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
976 x=d2i_X509(NULL,&q,l);
979 al=SSL_AD_BAD_CERTIFICATE;
980 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
985 al=SSL_AD_DECODE_ERROR;
986 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
989 if (!sk_X509_push(sk,x))
991 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
999 i=ssl_verify_cert_chain(s,sk);
1000 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
1001 #ifndef OPENSSL_NO_KRB5
1002 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1003 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1004 #endif /* OPENSSL_NO_KRB5 */
1007 al=ssl_verify_alarm_type(s->verify_result);
1008 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1011 ERR_clear_error(); /* but we keep s->verify_result */
1013 sc=ssl_sess_cert_new();
1014 if (sc == NULL) goto err;
1016 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1017 s->session->sess_cert=sc;
1020 /* Inconsistency alert: cert_chain does include the peer's
1021 * certificate, which we don't include in s3_srvr.c */
1022 x=sk_X509_value(sk,0);
1024 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1026 pkey=X509_get_pubkey(x);
1028 /* VRS: allow null cert if auth == KRB5 */
1029 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
1030 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
1034 printf("pkey,x = %p, %p\n", pkey,x);
1035 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1036 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
1037 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
1038 #endif /* KSSL_DEBUG */
1040 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1044 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1045 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1049 i=ssl_cert_type(x,pkey);
1050 if (need_cert && i < 0)
1054 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1055 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1061 sc->peer_cert_type=i;
1062 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1063 /* Why would the following ever happen?
1064 * We just created sc a couple of lines ago. */
1065 if (sc->peer_pkeys[i].x509 != NULL)
1066 X509_free(sc->peer_pkeys[i].x509);
1067 sc->peer_pkeys[i].x509=x;
1068 sc->peer_key= &(sc->peer_pkeys[i]);
1070 if (s->session->peer != NULL)
1071 X509_free(s->session->peer);
1072 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1077 sc->peer_cert_type=i;
1080 if (s->session->peer != NULL)
1081 X509_free(s->session->peer);
1082 s->session->peer=NULL;
1084 s->session->verify_result = s->verify_result;
1092 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1095 EVP_PKEY_free(pkey);
1097 sk_X509_pop_free(sk,X509_free);
1101 int ssl3_get_key_exchange(SSL *s)
1103 #ifndef OPENSSL_NO_RSA
1104 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1107 unsigned char *param,*p;
1108 int al,i,j,param_len,ok;
1110 EVP_PKEY *pkey=NULL;
1111 #ifndef OPENSSL_NO_RSA
1114 #ifndef OPENSSL_NO_DH
1117 #ifndef OPENSSL_NO_ECDH
1118 EC_KEY *ecdh = NULL;
1119 BN_CTX *bn_ctx = NULL;
1120 EC_POINT *srvr_ecpoint = NULL;
1122 int encoded_pt_len = 0;
1125 /* use same message size as in ssl3_get_certificate_request()
1126 * as ServerKeyExchange message may be skipped */
1127 n=s->method->ssl_get_message(s,
1128 SSL3_ST_CR_KEY_EXCH_A,
1129 SSL3_ST_CR_KEY_EXCH_B,
1133 if (!ok) return((int)n);
1135 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1137 #ifndef OPENSSL_NO_PSK
1138 /* In plain PSK ciphersuite, ServerKeyExchange can be
1139 omitted if no identity hint is sent. Set
1140 session->sess_cert anyway to avoid problems
1142 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1144 s->session->sess_cert=ssl_sess_cert_new();
1145 if (s->ctx->psk_identity_hint)
1146 OPENSSL_free(s->ctx->psk_identity_hint);
1147 s->ctx->psk_identity_hint = NULL;
1150 s->s3->tmp.reuse_message=1;
1154 param=p=(unsigned char *)s->init_msg;
1155 if (s->session->sess_cert != NULL)
1157 #ifndef OPENSSL_NO_RSA
1158 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1160 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1161 s->session->sess_cert->peer_rsa_tmp=NULL;
1164 #ifndef OPENSSL_NO_DH
1165 if (s->session->sess_cert->peer_dh_tmp)
1167 DH_free(s->session->sess_cert->peer_dh_tmp);
1168 s->session->sess_cert->peer_dh_tmp=NULL;
1171 #ifndef OPENSSL_NO_ECDH
1172 if (s->session->sess_cert->peer_ecdh_tmp)
1174 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1175 s->session->sess_cert->peer_ecdh_tmp=NULL;
1181 s->session->sess_cert=ssl_sess_cert_new();
1185 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1186 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1187 EVP_MD_CTX_init(&md_ctx);
1189 #ifndef OPENSSL_NO_PSK
1190 if (alg_k & SSL_kPSK)
1192 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1194 al=SSL_AD_HANDSHAKE_FAILURE;
1197 /* Store PSK identity hint for later use, hint is used
1198 * in ssl3_send_client_key_exchange. Assume that the
1199 * maximum length of a PSK identity hint can be as
1200 * long as the maximum length of a PSK identity. */
1201 if (i > PSK_MAX_IDENTITY_LEN)
1203 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1204 SSL_R_DATA_LENGTH_TOO_LONG);
1209 al=SSL_AD_DECODE_ERROR;
1210 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1211 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1214 /* If received PSK identity hint contains NULL
1215 * characters, the hint is truncated from the first
1216 * NULL. p may not be ending with NULL, so create a
1217 * NULL-terminated string. */
1218 memcpy(tmp_id_hint, p, i);
1219 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1220 if (s->ctx->psk_identity_hint != NULL)
1221 OPENSSL_free(s->ctx->psk_identity_hint);
1222 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1223 if (s->ctx->psk_identity_hint == NULL)
1225 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1233 #endif /* !OPENSSL_NO_PSK */
1234 #ifndef OPENSSL_NO_RSA
1235 if (alg_k & SSL_kRSA)
1237 if ((rsa=RSA_new()) == NULL)
1239 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1246 al=SSL_AD_DECODE_ERROR;
1247 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1250 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1252 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1261 al=SSL_AD_DECODE_ERROR;
1262 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1265 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1267 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1273 /* this should be because we are using an export cipher */
1274 if (alg_a & SSL_aRSA)
1275 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1278 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1281 s->session->sess_cert->peer_rsa_tmp=rsa;
1284 #else /* OPENSSL_NO_RSA */
1288 #ifndef OPENSSL_NO_DH
1289 else if (alg_k & SSL_kEDH)
1291 if ((dh=DH_new()) == NULL)
1293 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1300 al=SSL_AD_DECODE_ERROR;
1301 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1304 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1306 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1315 al=SSL_AD_DECODE_ERROR;
1316 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1319 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1321 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1330 al=SSL_AD_DECODE_ERROR;
1331 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1334 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1336 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1342 #ifndef OPENSSL_NO_RSA
1343 if (alg_a & SSL_aRSA)
1344 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1349 #ifndef OPENSSL_NO_DSA
1350 else if (alg_a & SSL_aDSS)
1351 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1353 /* else anonymous DH, so no certificate or pkey. */
1355 s->session->sess_cert->peer_dh_tmp=dh;
1358 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1360 al=SSL_AD_ILLEGAL_PARAMETER;
1361 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1364 #endif /* !OPENSSL_NO_DH */
1366 #ifndef OPENSSL_NO_ECDH
1367 else if (alg_k & SSL_kEECDH)
1370 const EC_GROUP *group;
1372 if ((ecdh=EC_KEY_new()) == NULL)
1374 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1378 /* Extract elliptic curve parameters and the
1379 * server's ephemeral ECDH public key.
1380 * Keep accumulating lengths of various components in
1381 * param_len and make sure it never exceeds n.
1384 /* XXX: For now we only support named (not generic) curves
1385 * and the ECParameters in this case is just three bytes.
1388 if ((param_len > n) ||
1389 (*p != NAMED_CURVE_TYPE) ||
1390 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1392 al=SSL_AD_INTERNAL_ERROR;
1393 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1397 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1400 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1403 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1405 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1408 EC_GROUP_free(ngroup);
1410 group = EC_KEY_get0_group(ecdh);
1412 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1413 (EC_GROUP_get_degree(group) > 163))
1415 al=SSL_AD_EXPORT_RESTRICTION;
1416 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1422 /* Next, get the encoded ECPoint */
1423 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1424 ((bn_ctx = BN_CTX_new()) == NULL))
1426 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1430 encoded_pt_len = *p; /* length of encoded point */
1432 param_len += (1 + encoded_pt_len);
1433 if ((param_len > n) ||
1434 (EC_POINT_oct2point(group, srvr_ecpoint,
1435 p, encoded_pt_len, bn_ctx) == 0))
1437 al=SSL_AD_DECODE_ERROR;
1438 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1445 /* The ECC/TLS specification does not mention
1446 * the use of DSA to sign ECParameters in the server
1447 * key exchange message. We do support RSA and ECDSA.
1450 #ifndef OPENSSL_NO_RSA
1451 else if (alg_a & SSL_aRSA)
1452 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1454 #ifndef OPENSSL_NO_ECDSA
1455 else if (alg_a & SSL_aECDSA)
1456 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1458 /* else anonymous ECDH, so no certificate or pkey. */
1459 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1460 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1462 BN_CTX_free(bn_ctx);
1463 EC_POINT_free(srvr_ecpoint);
1464 srvr_ecpoint = NULL;
1468 al=SSL_AD_UNEXPECTED_MESSAGE;
1469 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1472 #endif /* !OPENSSL_NO_ECDH */
1475 /* p points to the next byte, there are 'n' bytes left */
1477 /* if it was signed, check the signature */
1482 j=EVP_PKEY_size(pkey);
1484 if ((i != n) || (n > j) || (n <= 0))
1486 /* wrong packet length */
1487 al=SSL_AD_DECODE_ERROR;
1488 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1492 #ifndef OPENSSL_NO_RSA
1493 if (pkey->type == EVP_PKEY_RSA)
1499 for (num=2; num > 0; num--)
1501 EVP_DigestInit_ex(&md_ctx,(num == 2)
1502 ?s->ctx->md5:s->ctx->sha1, NULL);
1503 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1504 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1505 EVP_DigestUpdate(&md_ctx,param,param_len);
1506 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1510 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1514 al=SSL_AD_DECRYPT_ERROR;
1515 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1521 al=SSL_AD_DECRYPT_ERROR;
1522 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1528 #ifndef OPENSSL_NO_DSA
1529 if (pkey->type == EVP_PKEY_DSA)
1532 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1533 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1534 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1535 EVP_VerifyUpdate(&md_ctx,param,param_len);
1536 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1539 al=SSL_AD_DECRYPT_ERROR;
1540 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1546 #ifndef OPENSSL_NO_ECDSA
1547 if (pkey->type == EVP_PKEY_EC)
1549 /* let's do ECDSA */
1550 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1551 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1552 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1553 EVP_VerifyUpdate(&md_ctx,param,param_len);
1554 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1557 al=SSL_AD_DECRYPT_ERROR;
1558 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1565 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1571 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1572 /* aNULL or kPSK do not need public keys */
1574 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1577 /* still data left over */
1580 al=SSL_AD_DECODE_ERROR;
1581 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1585 EVP_PKEY_free(pkey);
1586 EVP_MD_CTX_cleanup(&md_ctx);
1589 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1591 EVP_PKEY_free(pkey);
1592 #ifndef OPENSSL_NO_RSA
1596 #ifndef OPENSSL_NO_DH
1600 #ifndef OPENSSL_NO_ECDH
1601 BN_CTX_free(bn_ctx);
1602 EC_POINT_free(srvr_ecpoint);
1606 EVP_MD_CTX_cleanup(&md_ctx);
1610 int ssl3_get_certificate_request(SSL *s)
1613 unsigned long n,nc,l;
1614 unsigned int llen,ctype_num,i;
1616 const unsigned char *p,*q;
1618 STACK_OF(X509_NAME) *ca_sk=NULL;
1620 n=s->method->ssl_get_message(s,
1621 SSL3_ST_CR_CERT_REQ_A,
1622 SSL3_ST_CR_CERT_REQ_B,
1627 if (!ok) return((int)n);
1629 s->s3->tmp.cert_req=0;
1631 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1633 s->s3->tmp.reuse_message=1;
1637 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1639 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1640 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1644 /* TLS does not like anon-DH with client cert */
1645 if (s->version > SSL3_VERSION)
1647 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1649 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1650 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1655 p=d=(unsigned char *)s->init_msg;
1657 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1659 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1663 /* get the certificate types */
1665 if (ctype_num > SSL3_CT_NUMBER)
1666 ctype_num=SSL3_CT_NUMBER;
1667 for (i=0; i<ctype_num; i++)
1668 s->s3->tmp.ctype[i]= p[i];
1671 /* get the CA RDNs */
1676 out=fopen("/tmp/vsign.der","w");
1677 fwrite(p,1,llen,out);
1682 if ((llen+ctype_num+2+1) != n)
1684 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1685 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1689 for (nc=0; nc<llen; )
1692 if ((l+nc+2) > llen)
1694 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1695 goto cont; /* netscape bugs */
1696 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1697 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1703 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1705 /* If netscape tolerance is on, ignore errors */
1706 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1710 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1711 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1718 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1719 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1722 if (!sk_X509_NAME_push(ca_sk,xn))
1724 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1738 /* we should setup a certificate to return.... */
1739 s->s3->tmp.cert_req=1;
1740 s->s3->tmp.ctype_num=ctype_num;
1741 if (s->s3->tmp.ca_names != NULL)
1742 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1743 s->s3->tmp.ca_names=ca_sk;
1748 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1752 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1754 return(X509_NAME_cmp(*a,*b));
1756 #ifndef OPENSSL_NO_TLSEXT
1757 int ssl3_get_new_session_ticket(SSL *s)
1759 int ok,al,ret=0, ticklen;
1761 const unsigned char *p;
1764 n=s->method->ssl_get_message(s,
1765 SSL3_ST_CR_SESSION_TICKET_A,
1766 SSL3_ST_CR_SESSION_TICKET_B,
1774 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1776 s->s3->tmp.reuse_message=1;
1779 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1781 al=SSL_AD_UNEXPECTED_MESSAGE;
1782 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1787 /* need at least ticket_lifetime_hint + ticket length */
1788 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1789 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1792 p=d=(unsigned char *)s->init_msg;
1793 n2l(p, s->session->tlsext_tick_lifetime_hint);
1795 /* ticket_lifetime_hint + ticket_length + ticket */
1796 if (ticklen + 6 != n)
1798 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1799 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1802 if (s->session->tlsext_tick)
1804 OPENSSL_free(s->session->tlsext_tick);
1805 s->session->tlsext_ticklen = 0;
1807 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1808 if (!s->session->tlsext_tick)
1810 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1813 memcpy(s->session->tlsext_tick, p, ticklen);
1814 s->session->tlsext_ticklen = ticklen;
1819 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1824 int ssl3_get_cert_status(SSL *s)
1827 unsigned long resplen;
1829 const unsigned char *p;
1831 n=s->method->ssl_get_message(s,
1832 SSL3_ST_CR_CERT_STATUS_A,
1833 SSL3_ST_CR_CERT_STATUS_B,
1834 SSL3_MT_CERTIFICATE_STATUS,
1838 if (!ok) return((int)n);
1841 /* need at least status type + length */
1842 al = SSL_AD_DECODE_ERROR;
1843 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1846 p = (unsigned char *)s->init_msg;
1847 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1849 al = SSL_AD_DECODE_ERROR;
1850 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1854 if (resplen + 4 != n)
1856 al = SSL_AD_DECODE_ERROR;
1857 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1860 if (s->tlsext_ocsp_resp)
1861 OPENSSL_free(s->tlsext_ocsp_resp);
1862 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1863 if (!s->tlsext_ocsp_resp)
1865 al = SSL_AD_INTERNAL_ERROR;
1866 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1869 s->tlsext_ocsp_resplen = resplen;
1870 if (s->ctx->tlsext_status_cb)
1873 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1876 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1877 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1882 al = SSL_AD_INTERNAL_ERROR;
1883 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1889 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1894 int ssl3_get_server_done(SSL *s)
1899 n=s->method->ssl_get_message(s,
1900 SSL3_ST_CR_SRVR_DONE_A,
1901 SSL3_ST_CR_SRVR_DONE_B,
1902 SSL3_MT_SERVER_DONE,
1903 30, /* should be very small, like 0 :-) */
1906 if (!ok) return((int)n);
1909 /* should contain no data */
1910 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1911 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1919 int ssl3_send_client_key_exchange(SSL *s)
1921 unsigned char *p,*d;
1923 unsigned long alg_k;
1924 #ifndef OPENSSL_NO_RSA
1926 EVP_PKEY *pkey=NULL;
1928 #ifndef OPENSSL_NO_KRB5
1930 #endif /* OPENSSL_NO_KRB5 */
1931 #ifndef OPENSSL_NO_ECDH
1932 EC_KEY *clnt_ecdh = NULL;
1933 const EC_POINT *srvr_ecpoint = NULL;
1934 EVP_PKEY *srvr_pub_pkey = NULL;
1935 unsigned char *encodedPoint = NULL;
1936 int encoded_pt_len = 0;
1937 BN_CTX * bn_ctx = NULL;
1940 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1942 d=(unsigned char *)s->init_buf->data;
1945 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1947 /* Fool emacs indentation */
1949 #ifndef OPENSSL_NO_RSA
1950 else if (alg_k & SSL_kRSA)
1953 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1955 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1956 rsa=s->session->sess_cert->peer_rsa_tmp;
1959 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1960 if ((pkey == NULL) ||
1961 (pkey->type != EVP_PKEY_RSA) ||
1962 (pkey->pkey.rsa == NULL))
1964 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1968 EVP_PKEY_free(pkey);
1971 tmp_buf[0]=s->client_version>>8;
1972 tmp_buf[1]=s->client_version&0xff;
1973 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1976 s->session->master_key_length=sizeof tmp_buf;
1979 /* Fix buf for TLS and beyond */
1980 if (s->version > SSL3_VERSION)
1982 n=RSA_public_encrypt(sizeof tmp_buf,
1983 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1985 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1986 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1990 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1994 /* Fix buf for TLS and beyond */
1995 if (s->version > SSL3_VERSION)
2001 s->session->master_key_length=
2002 s->method->ssl3_enc->generate_master_secret(s,
2003 s->session->master_key,
2004 tmp_buf,sizeof tmp_buf);
2005 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2008 #ifndef OPENSSL_NO_KRB5
2009 else if (alg_k & SSL_kKRB5)
2011 krb5_error_code krb5rc;
2012 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2013 /* krb5_data krb5_ap_req; */
2014 krb5_data *enc_ticket;
2015 krb5_data authenticator, *authp = NULL;
2016 EVP_CIPHER_CTX ciph_ctx;
2017 EVP_CIPHER *enc = NULL;
2018 unsigned char iv[EVP_MAX_IV_LENGTH];
2019 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2020 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2021 + EVP_MAX_IV_LENGTH];
2022 int padl, outl = sizeof(epms);
2024 EVP_CIPHER_CTX_init(&ciph_ctx);
2027 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2029 #endif /* KSSL_DEBUG */
2033 if (KRB5SENDAUTH) authp = &authenticator;
2034 #endif /* KRB5SENDAUTH */
2036 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2038 enc = kssl_map_enc(kssl_ctx->enctype);
2043 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2044 if (krb5rc && kssl_err.text)
2045 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2047 #endif /* KSSL_DEBUG */
2051 ssl3_send_alert(s,SSL3_AL_FATAL,
2052 SSL_AD_HANDSHAKE_FAILURE);
2053 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2058 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2059 ** in place of RFC 2712 KerberosWrapper, as in:
2061 ** Send ticket (copy to *p, set n = length)
2062 ** n = krb5_ap_req.length;
2063 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2064 ** if (krb5_ap_req.data)
2065 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2067 ** Now using real RFC 2712 KerberosWrapper
2068 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2069 ** Note: 2712 "opaque" types are here replaced
2070 ** with a 2-byte length followed by the value.
2072 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2073 ** Where "xx xx" = length bytes. Shown here with
2074 ** optional authenticator omitted.
2077 /* KerberosWrapper.Ticket */
2078 s2n(enc_ticket->length,p);
2079 memcpy(p, enc_ticket->data, enc_ticket->length);
2080 p+= enc_ticket->length;
2081 n = enc_ticket->length + 2;
2083 /* KerberosWrapper.Authenticator */
2084 if (authp && authp->length)
2086 s2n(authp->length,p);
2087 memcpy(p, authp->data, authp->length);
2089 n+= authp->length + 2;
2097 s2n(0,p);/* null authenticator length */
2101 tmp_buf[0]=s->client_version>>8;
2102 tmp_buf[1]=s->client_version&0xff;
2103 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2106 /* 20010420 VRS. Tried it this way; failed.
2107 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2108 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2109 ** kssl_ctx->length);
2110 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2113 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2114 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2116 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2118 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2120 if (outl > sizeof epms)
2122 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2125 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2127 /* KerberosWrapper.EncryptedPreMasterSecret */
2129 memcpy(p, epms, outl);
2133 s->session->master_key_length=
2134 s->method->ssl3_enc->generate_master_secret(s,
2135 s->session->master_key,
2136 tmp_buf, sizeof tmp_buf);
2138 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2139 OPENSSL_cleanse(epms, outl);
2142 #ifndef OPENSSL_NO_DH
2143 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2145 DH *dh_srvr,*dh_clnt;
2147 if (s->session->sess_cert->peer_dh_tmp != NULL)
2148 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2151 /* we get them from the cert */
2152 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2153 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2157 /* generate a new random key */
2158 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2160 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2163 if (!DH_generate_key(dh_clnt))
2165 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2169 /* use the 'p' output buffer for the DH key, but
2170 * make sure to clear it out afterwards */
2172 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2176 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2180 /* generate master key from the result */
2181 s->session->master_key_length=
2182 s->method->ssl3_enc->generate_master_secret(s,
2183 s->session->master_key,p,n);
2187 /* send off the data */
2188 n=BN_num_bytes(dh_clnt->pub_key);
2190 BN_bn2bin(dh_clnt->pub_key,p);
2195 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2199 #ifndef OPENSSL_NO_ECDH
2200 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2202 const EC_GROUP *srvr_group = NULL;
2204 int ecdh_clnt_cert = 0;
2207 /* Did we send out the client's
2208 * ECDH share for use in premaster
2209 * computation as part of client certificate?
2210 * If so, set ecdh_clnt_cert to 1.
2212 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2214 /* XXX: For now, we do not support client
2215 * authentication using ECDH certificates.
2216 * To add such support, one needs to add
2217 * code that checks for appropriate
2218 * conditions and sets ecdh_clnt_cert to 1.
2219 * For example, the cert have an ECC
2220 * key on the same curve as the server's
2221 * and the key should be authorized for
2224 * One also needs to add code in ssl3_connect
2225 * to skip sending the certificate verify
2228 * if ((s->cert->key->privatekey != NULL) &&
2229 * (s->cert->key->privatekey->type ==
2230 * EVP_PKEY_EC) && ...)
2231 * ecdh_clnt_cert = 1;
2235 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2237 tkey = s->session->sess_cert->peer_ecdh_tmp;
2241 /* Get the Server Public Key from Cert */
2242 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2243 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2244 if ((srvr_pub_pkey == NULL) ||
2245 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2246 (srvr_pub_pkey->pkey.ec == NULL))
2248 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2249 ERR_R_INTERNAL_ERROR);
2253 tkey = srvr_pub_pkey->pkey.ec;
2256 srvr_group = EC_KEY_get0_group(tkey);
2257 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2259 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2261 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2262 ERR_R_INTERNAL_ERROR);
2266 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2268 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2272 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2274 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2279 /* Reuse key info from our certificate
2280 * We only need our private key to perform
2281 * the ECDH computation.
2283 const BIGNUM *priv_key;
2284 tkey = s->cert->key->privatekey->pkey.ec;
2285 priv_key = EC_KEY_get0_private_key(tkey);
2286 if (priv_key == NULL)
2288 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2291 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2293 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2299 /* Generate a new ECDH key pair */
2300 if (!(EC_KEY_generate_key(clnt_ecdh)))
2302 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2307 /* use the 'p' output buffer for the ECDH key, but
2308 * make sure to clear it out afterwards
2311 field_size = EC_GROUP_get_degree(srvr_group);
2312 if (field_size <= 0)
2314 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2318 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2321 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2326 /* generate master key from the result */
2327 s->session->master_key_length = s->method->ssl3_enc \
2328 -> generate_master_secret(s,
2329 s->session->master_key,
2332 memset(p, 0, n); /* clean up */
2336 /* Send empty client key exch message */
2341 /* First check the size of encoding and
2342 * allocate memory accordingly.
2345 EC_POINT_point2oct(srvr_group,
2346 EC_KEY_get0_public_key(clnt_ecdh),
2347 POINT_CONVERSION_UNCOMPRESSED,
2350 encodedPoint = (unsigned char *)
2351 OPENSSL_malloc(encoded_pt_len *
2352 sizeof(unsigned char));
2353 bn_ctx = BN_CTX_new();
2354 if ((encodedPoint == NULL) ||
2357 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2361 /* Encode the public key */
2362 n = EC_POINT_point2oct(srvr_group,
2363 EC_KEY_get0_public_key(clnt_ecdh),
2364 POINT_CONVERSION_UNCOMPRESSED,
2365 encodedPoint, encoded_pt_len, bn_ctx);
2367 *p = n; /* length of encoded point */
2368 /* Encoded point will be copied here */
2370 /* copy the point */
2371 memcpy((unsigned char *)p, encodedPoint, n);
2372 /* increment n to account for length field */
2376 /* Free allocated memory */
2377 BN_CTX_free(bn_ctx);
2378 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2379 if (clnt_ecdh != NULL)
2380 EC_KEY_free(clnt_ecdh);
2381 EVP_PKEY_free(srvr_pub_pkey);
2383 #endif /* !OPENSSL_NO_ECDH */
2384 else if (alg_k & SSL_kGOST)
2386 /* GOST key exchange message creation */
2387 EVP_PKEY_CTX *pkey_ctx;
2390 unsigned int md_len;
2392 unsigned char premaster_secret[32],shared_ukm[32];
2393 EVP_MD_CTX *ukm_hash;
2396 /* Get server sertificate PKEY and create ctx from it */
2397 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509;
2399 peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509;
2401 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER);
2405 pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL);
2406 /* If we have send a certificate, and certificate key
2408 * parameters match those of server certificate, use
2409 * certificate key for key exchange
2412 /* Otherwise, generate ephemeral key pair */
2414 EVP_PKEY_encrypt_init(pkey_ctx);
2415 /* Generate session key */
2416 RAND_bytes(premaster_secret,32);
2417 /* If we have client certificate, use its secret as peer key */
2418 if (s->cert->key->privatekey) {
2419 if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <0) {
2420 /* If there was an error - just ignore it. Ephemeral key
2425 /* Set flag "client cert key is used for key
2429 /* Compute shared IV and store it in algorithm-specific
2431 ukm_hash = EVP_MD_CTX_create();
2432 EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94));
2433 EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE);
2434 EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE);
2435 EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
2436 EVP_MD_CTX_destroy(ukm_hash);
2437 if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV,
2439 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2443 /* Make GOST keytransport blob message */
2444 /*Encapsulate it into sequence */
2445 *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
2448 if (EVP_PKEY_encrypt(pkey_ctx,(unsigned char *)p+1,&msglen,premaster_secret,32)<0) {
2449 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2453 *(p++)= msglen & 0xff;
2455 EVP_PKEY_CTX_free(pkey_ctx);
2456 s->session->master_key_length=
2457 s->method->ssl3_enc->generate_master_secret(s,
2458 s->session->master_key,premaster_secret,32);
2459 EVP_PKEY_free(pub_key);
2462 #ifndef OPENSSL_NO_PSK
2463 else if (alg_k & SSL_kPSK)
2465 char identity[PSK_MAX_IDENTITY_LEN];
2466 unsigned char *t = NULL;
2467 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2468 unsigned int pre_ms_len = 0, psk_len = 0;
2472 if (s->psk_client_callback == NULL)
2474 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2475 SSL_R_PSK_NO_CLIENT_CB);
2479 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2480 identity, PSK_MAX_IDENTITY_LEN,
2481 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2482 if (psk_len > PSK_MAX_PSK_LEN)
2484 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2485 ERR_R_INTERNAL_ERROR);
2488 else if (psk_len == 0)
2490 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2491 SSL_R_PSK_IDENTITY_NOT_FOUND);
2495 /* create PSK pre_master_secret */
2496 pre_ms_len = 2+psk_len+2+psk_len;
2498 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2500 memset(t, 0, psk_len);
2504 if (s->session->psk_identity_hint != NULL)
2505 OPENSSL_free(s->session->psk_identity_hint);
2506 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2507 if (s->ctx->psk_identity_hint != NULL &&
2508 s->session->psk_identity_hint == NULL)
2510 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2511 ERR_R_MALLOC_FAILURE);
2515 if (s->session->psk_identity != NULL)
2516 OPENSSL_free(s->session->psk_identity);
2517 s->session->psk_identity = BUF_strdup(identity);
2518 if (s->session->psk_identity == NULL)
2520 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2521 ERR_R_MALLOC_FAILURE);
2525 s->session->master_key_length =
2526 s->method->ssl3_enc->generate_master_secret(s,
2527 s->session->master_key,
2528 psk_or_pre_ms, pre_ms_len);
2529 n = strlen(identity);
2531 memcpy(p, identity, n);
2535 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2536 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2539 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2546 ssl3_send_alert(s, SSL3_AL_FATAL,
2547 SSL_AD_HANDSHAKE_FAILURE);
2548 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2549 ERR_R_INTERNAL_ERROR);
2553 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2556 s->state=SSL3_ST_CW_KEY_EXCH_B;
2557 /* number of bytes to write */
2562 /* SSL3_ST_CW_KEY_EXCH_B */
2563 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2565 #ifndef OPENSSL_NO_ECDH
2566 BN_CTX_free(bn_ctx);
2567 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2568 if (clnt_ecdh != NULL)
2569 EC_KEY_free(clnt_ecdh);
2570 EVP_PKEY_free(srvr_pub_pkey);
2575 int ssl3_send_client_verify(SSL *s)
2577 unsigned char *p,*d;
2578 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2580 EVP_PKEY_CTX *pctx=NULL;
2581 #ifndef OPENSSL_NO_RSA
2585 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2589 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2591 d=(unsigned char *)s->init_buf->data;
2593 pkey=s->cert->key->privatekey;
2594 /* Create context from key and test if sha1 is allowed as digest */
2595 pctx = EVP_PKEY_CTX_new(pkey,NULL);
2596 EVP_PKEY_sign_init(pctx);
2597 if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0)
2599 s->method->ssl3_enc->cert_verify_mac(s,
2601 &(data[MD5_DIGEST_LENGTH]));
2607 #ifndef OPENSSL_NO_RSA
2608 if (pkey->type == EVP_PKEY_RSA)
2610 s->method->ssl3_enc->cert_verify_mac(s,
2613 if (RSA_sign(NID_md5_sha1, data,
2614 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2615 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2617 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2625 #ifndef OPENSSL_NO_DSA
2626 if (pkey->type == EVP_PKEY_DSA)
2628 if (!DSA_sign(pkey->save_type,
2629 &(data[MD5_DIGEST_LENGTH]),
2630 SHA_DIGEST_LENGTH,&(p[2]),
2631 (unsigned int *)&j,pkey->pkey.dsa))
2633 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2641 #ifndef OPENSSL_NO_ECDSA
2642 if (pkey->type == EVP_PKEY_EC)
2644 if (!ECDSA_sign(pkey->save_type,
2645 &(data[MD5_DIGEST_LENGTH]),
2646 SHA_DIGEST_LENGTH,&(p[2]),
2647 (unsigned int *)&j,pkey->pkey.ec))
2649 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2658 if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001)
2660 unsigned char signbuf[64];
2663 s->method->ssl3_enc->cert_verify_mac(s,
2664 NID_id_GostR3411_94,
2666 if (!EVP_PKEY_sign(pctx,signbuf,&sigsize,data,32)) {
2667 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2668 ERR_R_INTERNAL_ERROR);
2671 for (i=63,j=0; i>=0; j++, i--) {
2679 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2682 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2685 s->state=SSL3_ST_CW_CERT_VRFY_B;
2686 s->init_num=(int)n+4;
2689 EVP_PKEY_CTX_free(pctx);
2690 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2692 EVP_PKEY_CTX_free(pctx);
2696 int ssl3_send_client_certificate(SSL *s)
2699 EVP_PKEY *pkey=NULL;
2703 if (s->state == SSL3_ST_CW_CERT_A)
2705 if ((s->cert == NULL) ||
2706 (s->cert->key->x509 == NULL) ||
2707 (s->cert->key->privatekey == NULL))
2708 s->state=SSL3_ST_CW_CERT_B;
2710 s->state=SSL3_ST_CW_CERT_C;
2713 /* We need to get a client cert */
2714 if (s->state == SSL3_ST_CW_CERT_B)
2716 /* If we get an error, we need to
2717 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2718 * We then get retied later */
2720 if (s->ctx->client_cert_cb != NULL)
2721 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2724 s->rwstate=SSL_X509_LOOKUP;
2727 s->rwstate=SSL_NOTHING;
2728 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2730 s->state=SSL3_ST_CW_CERT_B;
2731 if ( !SSL_use_certificate(s,x509) ||
2732 !SSL_use_PrivateKey(s,pkey))
2738 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2741 if (x509 != NULL) X509_free(x509);
2742 if (pkey != NULL) EVP_PKEY_free(pkey);
2745 if (s->version == SSL3_VERSION)
2747 s->s3->tmp.cert_req=0;
2748 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2753 s->s3->tmp.cert_req=2;
2757 /* Ok, we have a cert */
2758 s->state=SSL3_ST_CW_CERT_C;
2761 if (s->state == SSL3_ST_CW_CERT_C)
2763 s->state=SSL3_ST_CW_CERT_D;
2764 l=ssl3_output_cert_chain(s,
2765 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2769 /* SSL3_ST_CW_CERT_D */
2770 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2773 #define has_bits(i,m) (((i)&(m)) == (m))
2775 int ssl3_check_cert_and_algorithm(SSL *s)
2779 EVP_PKEY *pkey=NULL;
2781 #ifndef OPENSSL_NO_RSA
2784 #ifndef OPENSSL_NO_DH
2788 sc=s->session->sess_cert;
2791 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2795 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2796 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2798 /* we don't have a certificate */
2799 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2802 #ifndef OPENSSL_NO_RSA
2803 rsa=s->session->sess_cert->peer_rsa_tmp;
2805 #ifndef OPENSSL_NO_DH
2806 dh=s->session->sess_cert->peer_dh_tmp;
2809 /* This is the passed certificate */
2811 idx=sc->peer_cert_type;
2812 #ifndef OPENSSL_NO_ECDH
2813 if (idx == SSL_PKEY_ECC)
2815 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2816 s->s3->tmp.new_cipher) == 0)
2817 { /* check failed */
2818 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2827 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2828 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2829 EVP_PKEY_free(pkey);
2832 /* Check that we have a certificate if we require one */
2833 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2835 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2838 #ifndef OPENSSL_NO_DSA
2839 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2841 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2845 #ifndef OPENSSL_NO_RSA
2846 if ((alg_k & SSL_kRSA) &&
2847 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2849 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2853 #ifndef OPENSSL_NO_DH
2854 if ((alg_k & SSL_kEDH) &&
2855 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2857 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2860 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2862 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2865 #ifndef OPENSSL_NO_DSA
2866 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2868 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2874 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2876 #ifndef OPENSSL_NO_RSA
2877 if (alg_k & SSL_kRSA)
2880 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2882 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2888 #ifndef OPENSSL_NO_DH
2889 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2892 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2894 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2901 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2907 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2912 /* Check to see if handshake is full or resumed. Usually this is just a
2913 * case of checking to see if a cache hit has occurred. In the case of
2914 * session tickets we have to check the next message to be sure.
2917 #ifndef OPENSSL_NO_TLSEXT
2918 static int ssl3_check_finished(SSL *s)
2922 if (!s->session->tlsext_tick)
2924 /* this function is called when we really expect a Certificate
2925 * message, so permit appropriate message length */
2926 n=s->method->ssl_get_message(s,
2932 if (!ok) return((int)n);
2933 s->s3->tmp.reuse_message = 1;
2934 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2935 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))