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) 1998-2003 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.
126 #include "ssl_locl.h"
127 #include "kssl_lcl.h"
128 #include <openssl/buffer.h>
129 #include <openssl/rand.h>
130 #include <openssl/objects.h>
131 #include <openssl/evp.h>
132 #include <openssl/md5.h>
134 #include <openssl/fips.h>
137 #ifndef OPENSSL_NO_DH
138 #include <openssl/dh.h>
140 #include <openssl/bn.h>
141 #ifndef OPENSSL_NO_ENGINE
142 #include <openssl/engine.h>
145 static SSL_METHOD *ssl3_get_client_method(int ver);
146 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
148 #ifndef OPENSSL_NO_ECDH
149 static int curve_id2nid(int curve_id);
150 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
153 static SSL_METHOD *ssl3_get_client_method(int ver)
155 if (ver == SSL3_VERSION)
156 return(SSLv3_client_method());
161 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
162 ssl_undefined_function,
164 ssl3_get_client_method)
166 int ssl3_connect(SSL *s)
169 unsigned long Time=(unsigned long)time(NULL);
170 void (*cb)(const SSL *ssl,int type,int val)=NULL;
172 int new_state,state,skip=0;
174 RAND_add(&Time,sizeof(Time),0);
178 if (s->info_callback != NULL)
180 else if (s->ctx->info_callback != NULL)
181 cb=s->ctx->info_callback;
184 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
192 case SSL_ST_RENEGOTIATE:
194 s->state=SSL_ST_CONNECT;
195 s->ctx->stats.sess_connect_renegotiate++;
199 case SSL_ST_BEFORE|SSL_ST_CONNECT:
200 case SSL_ST_OK|SSL_ST_CONNECT:
203 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
205 if ((s->version & 0xff00 ) != 0x0300)
207 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
212 /* s->version=SSL3_VERSION; */
213 s->type=SSL_ST_CONNECT;
215 if (s->init_buf == NULL)
217 if ((buf=BUF_MEM_new()) == NULL)
222 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
231 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
233 /* setup buffing BIO */
234 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
236 /* don't push the buffering BIO quite yet */
238 ssl3_init_finished_mac(s);
240 s->state=SSL3_ST_CW_CLNT_HELLO_A;
241 s->ctx->stats.sess_connect++;
245 case SSL3_ST_CW_CLNT_HELLO_A:
246 case SSL3_ST_CW_CLNT_HELLO_B:
249 ret=ssl3_client_hello(s);
250 if (ret <= 0) goto end;
251 s->state=SSL3_ST_CR_SRVR_HELLO_A;
254 /* turn on buffering for the next lot of output */
255 if (s->bbio != s->wbio)
256 s->wbio=BIO_push(s->bbio,s->wbio);
260 case SSL3_ST_CR_SRVR_HELLO_A:
261 case SSL3_ST_CR_SRVR_HELLO_B:
262 ret=ssl3_get_server_hello(s);
263 if (ret <= 0) goto end;
266 s->state=SSL3_ST_CR_FINISHED_A;
267 #ifndef OPENSSL_NO_TLSEXT
268 if (s->tlsext_ticket_expected)
270 /* receive renewed session ticket */
271 s->state=SSL3_ST_CR_SESSION_TICKET_A;
276 s->state=SSL3_ST_CR_CERT_A;
280 case SSL3_ST_CR_CERT_A:
281 case SSL3_ST_CR_CERT_B:
282 #ifndef OPENSSL_NO_TLSEXT
283 ret=ssl3_check_finished(s);
284 if (ret <= 0) goto end;
288 if (s->tlsext_ticket_expected)
289 s->state=SSL3_ST_CR_SESSION_TICKET_A;
291 s->state=SSL3_ST_CR_FINISHED_A;
296 /* Check if it is anon DH/ECDH */
297 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
299 ret=ssl3_get_server_certificate(s);
300 if (ret <= 0) goto end;
301 #ifndef OPENSSL_NO_TLSEXT
302 if (s->tlsext_status_expected)
303 s->state=SSL3_ST_CR_CERT_STATUS_A;
305 s->state=SSL3_ST_CR_KEY_EXCH_A;
310 s->state=SSL3_ST_CR_KEY_EXCH_A;
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
322 case SSL3_ST_CR_KEY_EXCH_A:
323 case SSL3_ST_CR_KEY_EXCH_B:
324 ret=ssl3_get_key_exchange(s);
325 if (ret <= 0) goto end;
326 s->state=SSL3_ST_CR_CERT_REQ_A;
329 /* at this point we check that we have the
330 * required stuff from the server */
331 if (!ssl3_check_cert_and_algorithm(s))
338 case SSL3_ST_CR_CERT_REQ_A:
339 case SSL3_ST_CR_CERT_REQ_B:
340 ret=ssl3_get_certificate_request(s);
341 if (ret <= 0) goto end;
342 s->state=SSL3_ST_CR_SRVR_DONE_A;
346 case SSL3_ST_CR_SRVR_DONE_A:
347 case SSL3_ST_CR_SRVR_DONE_B:
348 ret=ssl3_get_server_done(s);
349 if (ret <= 0) goto end;
350 if (s->s3->tmp.cert_req)
351 s->state=SSL3_ST_CW_CERT_A;
353 s->state=SSL3_ST_CW_KEY_EXCH_A;
358 case SSL3_ST_CW_CERT_A:
359 case SSL3_ST_CW_CERT_B:
360 case SSL3_ST_CW_CERT_C:
361 case SSL3_ST_CW_CERT_D:
362 ret=ssl3_send_client_certificate(s);
363 if (ret <= 0) goto end;
364 s->state=SSL3_ST_CW_KEY_EXCH_A;
368 case SSL3_ST_CW_KEY_EXCH_A:
369 case SSL3_ST_CW_KEY_EXCH_B:
370 ret=ssl3_send_client_key_exchange(s);
371 if (ret <= 0) goto end;
372 /* EAY EAY EAY need to check for DH fix cert
374 /* For TLS, cert_req is set to 2, so a cert chain
375 * of nothing is sent, but no verify packet is sent */
376 /* XXX: For now, we do not support client
377 * authentication in ECDH cipher suites with
378 * ECDH (rather than ECDSA) certificates.
379 * We need to skip the certificate verify
380 * message when client's ECDH public key is sent
381 * inside the client certificate.
383 if (s->s3->tmp.cert_req == 1)
385 s->state=SSL3_ST_CW_CERT_VRFY_A;
389 s->state=SSL3_ST_CW_CHANGE_A;
390 s->s3->change_cipher_spec=0;
396 case SSL3_ST_CW_CERT_VRFY_A:
397 case SSL3_ST_CW_CERT_VRFY_B:
398 ret=ssl3_send_client_verify(s);
399 if (ret <= 0) goto end;
400 s->state=SSL3_ST_CW_CHANGE_A;
402 s->s3->change_cipher_spec=0;
405 case SSL3_ST_CW_CHANGE_A:
406 case SSL3_ST_CW_CHANGE_B:
407 ret=ssl3_send_change_cipher_spec(s,
408 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
409 if (ret <= 0) goto end;
410 s->state=SSL3_ST_CW_FINISHED_A;
413 s->session->cipher=s->s3->tmp.new_cipher;
414 #ifdef OPENSSL_NO_COMP
415 s->session->compress_meth=0;
417 if (s->s3->tmp.new_compression == NULL)
418 s->session->compress_meth=0;
420 s->session->compress_meth=
421 s->s3->tmp.new_compression->id;
423 if (!s->method->ssl3_enc->setup_key_block(s))
429 if (!s->method->ssl3_enc->change_cipher_state(s,
430 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
438 case SSL3_ST_CW_FINISHED_A:
439 case SSL3_ST_CW_FINISHED_B:
440 ret=ssl3_send_finished(s,
441 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
442 s->method->ssl3_enc->client_finished_label,
443 s->method->ssl3_enc->client_finished_label_len);
444 if (ret <= 0) goto end;
445 s->s3->flags |= SSL3_FLAGS_CCS_OK;
446 s->state=SSL3_ST_CW_FLUSH;
449 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
452 s->s3->tmp.next_state=SSL_ST_OK;
453 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
456 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
457 s->s3->delay_buf_pop_ret=0;
462 #ifndef OPENSSL_NO_TLSEXT
463 /* Allow NewSessionTicket if ticket expected */
464 if (s->tlsext_ticket_expected)
465 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
469 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
474 #ifndef OPENSSL_NO_TLSEXT
475 case SSL3_ST_CR_SESSION_TICKET_A:
476 case SSL3_ST_CR_SESSION_TICKET_B:
477 ret=ssl3_get_new_session_ticket(s);
478 if (ret <= 0) goto end;
479 s->state=SSL3_ST_CR_FINISHED_A;
483 case SSL3_ST_CR_CERT_STATUS_A:
484 case SSL3_ST_CR_CERT_STATUS_B:
485 ret=ssl3_get_cert_status(s);
486 if (ret <= 0) goto end;
487 s->state=SSL3_ST_CR_KEY_EXCH_A;
492 case SSL3_ST_CR_FINISHED_A:
493 case SSL3_ST_CR_FINISHED_B:
495 s->s3->flags |= SSL3_FLAGS_CCS_OK;
496 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
497 SSL3_ST_CR_FINISHED_B);
498 if (ret <= 0) goto end;
501 s->state=SSL3_ST_CW_CHANGE_A;
507 case SSL3_ST_CW_FLUSH:
508 s->rwstate=SSL_WRITING;
509 if (BIO_flush(s->wbio) <= 0)
514 s->rwstate=SSL_NOTHING;
515 s->state=s->s3->tmp.next_state;
519 /* clean a few things up */
520 ssl3_cleanup_key_block(s);
522 if (s->init_buf != NULL)
524 BUF_MEM_free(s->init_buf);
528 /* If we are not 'joining' the last two packets,
529 * remove the buffering now */
530 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
531 ssl_free_wbio_buffer(s);
532 /* else do it later in ssl3_write */
537 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
538 if (s->hit) s->ctx->stats.sess_hit++;
542 s->handshake_func=ssl3_connect;
543 s->ctx->stats.sess_connect_good++;
545 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
551 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
557 /* did we do anything */
558 if (!s->s3->tmp.reuse_message && !skip)
562 if ((ret=BIO_flush(s->wbio)) <= 0)
566 if ((cb != NULL) && (s->state != state))
570 cb(s,SSL_CB_CONNECT_LOOP,1);
581 cb(s,SSL_CB_CONNECT_EXIT,ret);
586 int ssl3_client_hello(SSL *s)
591 unsigned long Time,l;
592 #ifndef OPENSSL_NO_COMP
597 buf=(unsigned char *)s->init_buf->data;
598 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
600 SSL_SESSION *sess = s->session;
601 if ((sess == NULL) ||
602 (sess->ssl_version != s->version) ||
603 #ifdef OPENSSL_NO_TLSEXT
604 !sess->session_id_length ||
606 (!sess->session_id_length && !sess->tlsext_tick) ||
608 (sess->not_resumable))
610 if (!ssl_get_new_session(s,0))
613 /* else use the pre-loaded session */
615 p=s->s3->client_random;
616 Time=(unsigned long)time(NULL); /* Time */
618 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
621 /* Do the message type and length last */
624 *(p++)=s->version>>8;
625 *(p++)=s->version&0xff;
626 s->client_version=s->version;
629 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
636 i=s->session->session_id_length;
640 if (i > (int)sizeof(s->session->session_id))
642 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
645 memcpy(p,s->session->session_id,i);
649 /* Ciphers supported */
650 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
653 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
660 #ifdef OPENSSL_NO_COMP
663 if (s->ctx->comp_methods == NULL)
666 j=sk_SSL_COMP_num(s->ctx->comp_methods);
670 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
674 *(p++)=0; /* Add the NULL method */
675 #ifndef OPENSSL_NO_TLSEXT
676 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
678 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
684 *(d++)=SSL3_MT_CLIENT_HELLO;
687 s->state=SSL3_ST_CW_CLNT_HELLO_B;
688 /* number of bytes to write */
693 /* SSL3_ST_CW_CLNT_HELLO_B */
694 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
699 int ssl3_get_server_hello(SSL *s)
701 STACK_OF(SSL_CIPHER) *sk;
707 #ifndef OPENSSL_NO_COMP
711 n=s->method->ssl_get_message(s,
712 SSL3_ST_CR_SRVR_HELLO_A,
713 SSL3_ST_CR_SRVR_HELLO_B,
718 if (!ok) return((int)n);
720 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
722 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
724 if ( s->d1->send_cookie == 0)
726 s->s3->tmp.reuse_message = 1;
729 else /* already sent a cookie */
731 al=SSL_AD_UNEXPECTED_MESSAGE;
732 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
738 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
740 al=SSL_AD_UNEXPECTED_MESSAGE;
741 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
745 d=p=(unsigned char *)s->init_msg;
747 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
749 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
750 s->version=(s->version&0xff00)|p[1];
751 al=SSL_AD_PROTOCOL_VERSION;
756 /* load the server hello data */
757 /* load the server random */
758 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
761 /* get the session-id */
764 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
766 al=SSL_AD_ILLEGAL_PARAMETER;
767 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
771 if (j != 0 && j == s->session->session_id_length
772 && memcmp(p,s->session->session_id,j) == 0)
774 if(s->sid_ctx_length != s->session->sid_ctx_length
775 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
777 /* actually a client application bug */
778 al=SSL_AD_ILLEGAL_PARAMETER;
779 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
782 s->s3->flags |= SSL3_FLAGS_CCS_OK;
785 else /* a miss or crap from the other end */
787 /* If we were trying for session-id reuse, make a new
788 * SSL_SESSION so we don't stuff up other people */
790 if (s->session->session_id_length > 0)
792 if (!ssl_get_new_session(s,0))
794 al=SSL_AD_INTERNAL_ERROR;
798 s->session->session_id_length=j;
799 memcpy(s->session->session_id,p,j); /* j could be 0 */
802 c=ssl_get_cipher_by_char(s,p);
806 al=SSL_AD_ILLEGAL_PARAMETER;
807 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
810 p+=ssl_put_cipher_by_char(s,NULL,NULL);
812 sk=ssl_get_ciphers_by_id(s);
813 i=sk_SSL_CIPHER_find(sk,c);
816 /* we did not say we would use this cipher */
817 al=SSL_AD_ILLEGAL_PARAMETER;
818 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
822 /* Depending on the session caching (internal/external), the cipher
823 and/or cipher_id values may not be set. Make sure that
824 cipher_id is set and use it for comparison. */
825 if (s->session->cipher)
826 s->session->cipher_id = s->session->cipher->id;
827 if (s->hit && (s->session->cipher_id != c->id))
829 /* Workaround is now obsolete */
832 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
835 al=SSL_AD_ILLEGAL_PARAMETER;
836 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
840 s->s3->tmp.new_cipher=c;
842 /* lets get the compression algorithm */
844 #ifdef OPENSSL_NO_COMP
847 al=SSL_AD_ILLEGAL_PARAMETER;
848 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
856 comp=ssl3_comp_find(s->ctx->comp_methods,j);
858 if ((j != 0) && (comp == NULL))
860 al=SSL_AD_ILLEGAL_PARAMETER;
861 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
866 s->s3->tmp.new_compression=comp;
869 #ifndef OPENSSL_NO_TLSEXT
871 if (s->version >= SSL3_VERSION)
873 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
875 /* 'al' set by ssl_parse_serverhello_tlsext */
876 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
879 if (ssl_check_serverhello_tlsext(s) <= 0)
881 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
890 /* wrong packet length */
891 al=SSL_AD_DECODE_ERROR;
892 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
898 ssl3_send_alert(s,SSL3_AL_FATAL,al);
899 #ifndef OPENSSL_NO_TLSEXT
905 int ssl3_get_server_certificate(SSL *s)
908 unsigned long n,nc,llen,l;
910 const unsigned char *q,*p;
912 STACK_OF(X509) *sk=NULL;
915 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
917 n=s->method->ssl_get_message(s,
924 if (!ok) return((int)n);
926 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
927 ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) &&
928 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
930 s->s3->tmp.reuse_message=1;
934 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
936 al=SSL_AD_UNEXPECTED_MESSAGE;
937 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
940 p=d=(unsigned char *)s->init_msg;
942 if ((sk=sk_X509_new_null()) == NULL)
944 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
951 al=SSL_AD_DECODE_ERROR;
952 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
955 for (nc=0; nc<llen; )
960 al=SSL_AD_DECODE_ERROR;
961 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
966 x=d2i_X509(NULL,&q,l);
969 al=SSL_AD_BAD_CERTIFICATE;
970 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
975 al=SSL_AD_DECODE_ERROR;
976 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
979 if (!sk_X509_push(sk,x))
981 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
989 i=ssl_verify_cert_chain(s,sk);
990 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
991 #ifndef OPENSSL_NO_KRB5
992 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
993 != (SSL_aKRB5|SSL_kKRB5)
994 #endif /* OPENSSL_NO_KRB5 */
997 al=ssl_verify_alarm_type(s->verify_result);
998 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1001 ERR_clear_error(); /* but we keep s->verify_result */
1003 sc=ssl_sess_cert_new();
1004 if (sc == NULL) goto err;
1006 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1007 s->session->sess_cert=sc;
1010 /* Inconsistency alert: cert_chain does include the peer's
1011 * certificate, which we don't include in s3_srvr.c */
1012 x=sk_X509_value(sk,0);
1014 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1016 pkey=X509_get_pubkey(x);
1018 /* VRS: allow null cert if auth == KRB5 */
1019 need_cert = ((s->s3->tmp.new_cipher->algorithms
1020 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
1021 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
1024 printf("pkey,x = %p, %p\n", (void *)pkey,(void *)x);
1025 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1026 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
1027 s->s3->tmp.new_cipher->algorithms, need_cert);
1028 #endif /* KSSL_DEBUG */
1030 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1034 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1035 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1039 i=ssl_cert_type(x,pkey);
1040 if (need_cert && i < 0)
1044 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1045 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1051 sc->peer_cert_type=i;
1052 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1053 /* Why would the following ever happen?
1054 * We just created sc a couple of lines ago. */
1055 if (sc->peer_pkeys[i].x509 != NULL)
1056 X509_free(sc->peer_pkeys[i].x509);
1057 sc->peer_pkeys[i].x509=x;
1058 sc->peer_key= &(sc->peer_pkeys[i]);
1060 if (s->session->peer != NULL)
1061 X509_free(s->session->peer);
1062 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1067 sc->peer_cert_type=i;
1070 if (s->session->peer != NULL)
1071 X509_free(s->session->peer);
1072 s->session->peer=NULL;
1074 s->session->verify_result = s->verify_result;
1082 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1085 EVP_PKEY_free(pkey);
1087 sk_X509_pop_free(sk,X509_free);
1091 int ssl3_get_key_exchange(SSL *s)
1093 #ifndef OPENSSL_NO_RSA
1094 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1097 unsigned char *param,*p;
1099 long i,param_len,n,alg;
1100 EVP_PKEY *pkey=NULL;
1101 #ifndef OPENSSL_NO_RSA
1104 #ifndef OPENSSL_NO_DH
1107 #ifndef OPENSSL_NO_ECDH
1108 EC_KEY *ecdh = NULL;
1109 BN_CTX *bn_ctx = NULL;
1110 EC_POINT *srvr_ecpoint = NULL;
1112 int encoded_pt_len = 0;
1115 /* use same message size as in ssl3_get_certificate_request()
1116 * as ServerKeyExchange message may be skipped */
1117 n=s->method->ssl_get_message(s,
1118 SSL3_ST_CR_KEY_EXCH_A,
1119 SSL3_ST_CR_KEY_EXCH_B,
1124 if (!ok) return((int)n);
1126 alg=s->s3->tmp.new_cipher->algorithms;
1127 EVP_MD_CTX_init(&md_ctx);
1129 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1132 * Can't skip server key exchange if this is an ephemeral
1135 if (alg & (SSL_kEDH|SSL_kECDHE))
1137 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE);
1138 al = SSL_AD_UNEXPECTED_MESSAGE;
1141 s->s3->tmp.reuse_message=1;
1145 param=p=(unsigned char *)s->init_msg;
1147 if (s->session->sess_cert != NULL)
1149 #ifndef OPENSSL_NO_RSA
1150 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1152 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1153 s->session->sess_cert->peer_rsa_tmp=NULL;
1156 #ifndef OPENSSL_NO_DH
1157 if (s->session->sess_cert->peer_dh_tmp)
1159 DH_free(s->session->sess_cert->peer_dh_tmp);
1160 s->session->sess_cert->peer_dh_tmp=NULL;
1163 #ifndef OPENSSL_NO_ECDH
1164 if (s->session->sess_cert->peer_ecdh_tmp)
1166 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1167 s->session->sess_cert->peer_ecdh_tmp=NULL;
1173 s->session->sess_cert=ssl_sess_cert_new();
1176 /* Total length of the parameters including the length prefix */
1179 al=SSL_AD_DECODE_ERROR;
1180 #ifndef OPENSSL_NO_RSA
1183 /* Temporary RSA keys only allowed in export ciphersuites */
1184 if (!SSL_C_IS_EXPORT(s->s3->tmp.new_cipher))
1186 al=SSL_AD_UNEXPECTED_MESSAGE;
1187 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1190 if ((rsa=RSA_new()) == NULL)
1192 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1199 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1200 SSL_R_LENGTH_TOO_SHORT);
1205 if (i > n - param_len)
1207 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1212 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1214 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1219 if (2 > n - param_len)
1221 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1222 SSL_R_LENGTH_TOO_SHORT);
1229 if (i > n - param_len)
1231 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 */
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 & SSL_kEDH)
1262 if ((dh=DH_new()) == NULL)
1264 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1271 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1272 SSL_R_LENGTH_TOO_SHORT);
1277 if (i > n - param_len)
1279 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1284 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1286 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1291 if (2 > n - param_len)
1293 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1294 SSL_R_LENGTH_TOO_SHORT);
1301 if (i > n - param_len)
1303 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1308 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1310 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1315 if (2 > n - param_len)
1317 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1318 SSL_R_LENGTH_TOO_SHORT);
1325 if (i > n - param_len)
1327 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1332 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1334 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1340 #ifndef OPENSSL_NO_RSA
1342 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1347 #ifndef OPENSSL_NO_DSA
1348 else if (alg & SSL_aDSS)
1349 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1351 /* else anonymous DH, so no certificate or pkey. */
1353 s->session->sess_cert->peer_dh_tmp=dh;
1356 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1358 al=SSL_AD_ILLEGAL_PARAMETER;
1359 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1362 #endif /* !OPENSSL_NO_DH */
1364 #ifndef OPENSSL_NO_ECDH
1365 else if (alg & SSL_kECDHE)
1368 const EC_GROUP *group;
1370 if ((ecdh=EC_KEY_new()) == NULL)
1372 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1376 /* Extract elliptic curve parameters and the
1377 * server's ephemeral ECDH public key.
1378 * Keep accumulating lengths of various components in
1379 * param_len and make sure it never exceeds n.
1382 /* XXX: For now we only support named (not generic) curves
1383 * and the ECParameters in this case is just three bytes. We
1384 * also need one byte for the length of the encoded point
1389 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1390 SSL_R_LENGTH_TOO_SHORT);
1394 if ((*p != NAMED_CURVE_TYPE) ||
1395 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1397 al=SSL_AD_INTERNAL_ERROR;
1398 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1402 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1405 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1408 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1410 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1413 EC_GROUP_free(ngroup);
1415 group = EC_KEY_get0_group(ecdh);
1417 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1418 (EC_GROUP_get_degree(group) > 163))
1420 al=SSL_AD_EXPORT_RESTRICTION;
1421 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1427 /* Next, get the encoded ECPoint */
1428 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1429 ((bn_ctx = BN_CTX_new()) == NULL))
1431 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1435 encoded_pt_len = *p; /* length of encoded point */
1438 if ((encoded_pt_len > n - param_len) ||
1439 (EC_POINT_oct2point(group, srvr_ecpoint,
1440 p, encoded_pt_len, bn_ctx) == 0))
1442 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1445 param_len += encoded_pt_len;
1450 /* The ECC/TLS specification does not mention
1451 * the use of DSA to sign ECParameters in the server
1452 * key exchange message. We do support RSA and ECDSA.
1455 #ifndef OPENSSL_NO_RSA
1456 else if (alg & SSL_aRSA)
1457 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1459 #ifndef OPENSSL_NO_ECDSA
1460 else if (alg & SSL_aECDSA)
1461 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1463 /* else anonymous ECDH, so no certificate or pkey. */
1464 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1465 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1467 BN_CTX_free(bn_ctx);
1469 EC_POINT_free(srvr_ecpoint);
1470 srvr_ecpoint = NULL;
1472 else if (alg & SSL_kECDH)
1474 al=SSL_AD_UNEXPECTED_MESSAGE;
1475 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1478 #endif /* !OPENSSL_NO_ECDH */
1481 al=SSL_AD_HANDSHAKE_FAILURE;
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1487 /* p points to the next byte, there are 'n' bytes left */
1489 /* if it was signed, check the signature */
1494 j=EVP_PKEY_size(pkey);
1496 /* Check signature length. If n is 0 then signature is empty */
1497 if ((i != n) || (n > j) || (n <= 0))
1499 /* wrong packet length */
1500 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1504 #ifndef OPENSSL_NO_RSA
1505 if (pkey->type == EVP_PKEY_RSA)
1512 for (num=2; num > 0; num--)
1514 EVP_MD_CTX_set_flags(&md_ctx,
1515 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1516 EVP_DigestInit_ex(&md_ctx,(num == 2)
1517 ?s->ctx->md5:s->ctx->sha1, NULL);
1518 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1519 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1520 EVP_DigestUpdate(&md_ctx,param,param_len);
1521 EVP_DigestFinal_ex(&md_ctx,q,&size);
1525 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1529 al=SSL_AD_DECRYPT_ERROR;
1530 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1536 al=SSL_AD_DECRYPT_ERROR;
1537 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1543 #ifndef OPENSSL_NO_DSA
1544 if (pkey->type == EVP_PKEY_DSA)
1547 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1548 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1549 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1550 EVP_VerifyUpdate(&md_ctx,param,param_len);
1551 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1554 al=SSL_AD_DECRYPT_ERROR;
1555 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1561 #ifndef OPENSSL_NO_ECDSA
1562 if (pkey->type == EVP_PKEY_EC)
1564 /* let's do ECDSA */
1565 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1566 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1567 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1568 EVP_VerifyUpdate(&md_ctx,param,param_len);
1569 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1572 al=SSL_AD_DECRYPT_ERROR;
1573 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1580 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1586 /* still data left over */
1587 if (!(alg & SSL_aNULL))
1589 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1594 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1598 EVP_PKEY_free(pkey);
1599 EVP_MD_CTX_cleanup(&md_ctx);
1602 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1604 EVP_PKEY_free(pkey);
1605 #ifndef OPENSSL_NO_RSA
1609 #ifndef OPENSSL_NO_DH
1613 #ifndef OPENSSL_NO_ECDH
1614 BN_CTX_free(bn_ctx);
1615 EC_POINT_free(srvr_ecpoint);
1619 EVP_MD_CTX_cleanup(&md_ctx);
1623 int ssl3_get_certificate_request(SSL *s)
1626 unsigned long n,nc,l;
1627 unsigned int llen,ctype_num,i;
1629 const unsigned char *p,*q;
1631 STACK_OF(X509_NAME) *ca_sk=NULL;
1633 n=s->method->ssl_get_message(s,
1634 SSL3_ST_CR_CERT_REQ_A,
1635 SSL3_ST_CR_CERT_REQ_B,
1640 if (!ok) return((int)n);
1642 s->s3->tmp.cert_req=0;
1644 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1646 s->s3->tmp.reuse_message=1;
1650 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1652 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1653 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1657 /* TLS does not like anon-DH with client cert */
1658 if (s->version > SSL3_VERSION)
1660 l=s->s3->tmp.new_cipher->algorithms;
1663 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1664 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1669 p=d=(unsigned char *)s->init_msg;
1671 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1673 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1677 /* get the certificate types */
1679 if (ctype_num > SSL3_CT_NUMBER)
1680 ctype_num=SSL3_CT_NUMBER;
1681 for (i=0; i<ctype_num; i++)
1682 s->s3->tmp.ctype[i]= p[i];
1685 /* get the CA RDNs */
1690 out=fopen("/tmp/vsign.der","w");
1691 fwrite(p,1,llen,out);
1696 if ((llen+ctype_num+2+1) != n)
1698 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1699 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1703 for (nc=0; nc<llen; )
1706 if ((l+nc+2) > llen)
1708 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1709 goto cont; /* netscape bugs */
1710 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1711 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1717 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1719 /* If netscape tolerance is on, ignore errors */
1720 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1724 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1725 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1732 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1733 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1736 if (!sk_X509_NAME_push(ca_sk,xn))
1738 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1752 /* we should setup a certificate to return.... */
1753 s->s3->tmp.cert_req=1;
1754 s->s3->tmp.ctype_num=ctype_num;
1755 if (s->s3->tmp.ca_names != NULL)
1756 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1757 s->s3->tmp.ca_names=ca_sk;
1762 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1766 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1768 return(X509_NAME_cmp(*a,*b));
1770 #ifndef OPENSSL_NO_TLSEXT
1771 int ssl3_get_new_session_ticket(SSL *s)
1773 int ok,al,ret=0, ticklen;
1775 const unsigned char *p;
1778 n=s->method->ssl_get_message(s,
1779 SSL3_ST_CR_SESSION_TICKET_A,
1780 SSL3_ST_CR_SESSION_TICKET_B,
1788 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1790 s->s3->tmp.reuse_message=1;
1793 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1795 al=SSL_AD_UNEXPECTED_MESSAGE;
1796 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1801 /* need at least ticket_lifetime_hint + ticket length */
1802 al = SSL_AD_DECODE_ERROR;
1803 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1807 p=d=(unsigned char *)s->init_msg;
1809 if (s->session->session_id_length > 0) {
1810 int i = s->session_ctx->session_cache_mode;
1811 SSL_SESSION *new_sess;
1813 * We reused an existing session, so we need to replace it with a new
1816 if (i & SSL_SESS_CACHE_CLIENT) {
1818 * Remove the old session from the cache
1820 if (i & SSL_SESS_CACHE_NO_INTERNAL_STORE) {
1821 if (s->session_ctx->remove_session_cb != NULL)
1822 s->session_ctx->remove_session_cb(s->session_ctx,
1825 /* We carry on if this fails */
1826 SSL_CTX_remove_session(s->session_ctx, s->session);
1830 if ((new_sess = ssl_session_dup(s->session, 0)) == 0) {
1831 al = SSL_AD_INTERNAL_ERROR;
1832 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE);
1836 SSL_SESSION_free(s->session);
1837 s->session = new_sess;
1840 n2l(p, s->session->tlsext_tick_lifetime_hint);
1842 /* ticket_lifetime_hint + ticket_length + ticket */
1843 if (ticklen + 6 != n)
1845 al = SSL_AD_DECODE_ERROR;
1846 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1849 if (s->session->tlsext_tick)
1851 OPENSSL_free(s->session->tlsext_tick);
1852 s->session->tlsext_ticklen = 0;
1854 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1855 if (!s->session->tlsext_tick)
1857 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1860 memcpy(s->session->tlsext_tick, p, ticklen);
1861 s->session->tlsext_ticklen = ticklen;
1862 /* There are two ways to detect a resumed ticket sesion.
1863 * One is to set an appropriate session ID and then the server
1864 * must return a match in ServerHello. This allows the normal
1865 * client session ID matching to work and we know much
1866 * earlier that the ticket has been accepted.
1868 * The other way is to set zero length session ID when the
1869 * ticket is presented and rely on the handshake to determine
1870 * session resumption.
1872 * We choose the former approach because this fits in with
1873 * assumptions elsewhere in OpenSSL. The session ID is set
1874 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1877 EVP_Digest(p, ticklen,
1878 s->session->session_id, &s->session->session_id_length,
1879 #ifndef OPENSSL_NO_SHA256
1880 EVP_sha256(), NULL);
1887 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1892 int ssl3_get_cert_status(SSL *s)
1895 unsigned long resplen;
1897 const unsigned char *p;
1899 n=s->method->ssl_get_message(s,
1900 SSL3_ST_CR_CERT_STATUS_A,
1901 SSL3_ST_CR_CERT_STATUS_B,
1902 SSL3_MT_CERTIFICATE_STATUS,
1906 if (!ok) return((int)n);
1909 /* need at least status type + length */
1910 al = SSL_AD_DECODE_ERROR;
1911 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1914 p = (unsigned char *)s->init_msg;
1915 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1917 al = SSL_AD_DECODE_ERROR;
1918 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1922 if (resplen + 4 != (unsigned long)n)
1924 al = SSL_AD_DECODE_ERROR;
1925 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1928 if (s->tlsext_ocsp_resp)
1929 OPENSSL_free(s->tlsext_ocsp_resp);
1930 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1931 if (!s->tlsext_ocsp_resp)
1933 al = SSL_AD_INTERNAL_ERROR;
1934 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1937 s->tlsext_ocsp_resplen = resplen;
1938 if (s->ctx->tlsext_status_cb)
1941 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1944 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1945 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1950 al = SSL_AD_INTERNAL_ERROR;
1951 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1957 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1962 int ssl3_get_server_done(SSL *s)
1967 n=s->method->ssl_get_message(s,
1968 SSL3_ST_CR_SRVR_DONE_A,
1969 SSL3_ST_CR_SRVR_DONE_B,
1970 SSL3_MT_SERVER_DONE,
1971 30, /* should be very small, like 0 :-) */
1974 if (!ok) return((int)n);
1977 /* should contain no data */
1978 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1979 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1987 int ssl3_send_client_key_exchange(SSL *s)
1989 unsigned char *p,*d;
1992 #ifndef OPENSSL_NO_RSA
1994 EVP_PKEY *pkey=NULL;
1996 #ifndef OPENSSL_NO_KRB5
1998 #endif /* OPENSSL_NO_KRB5 */
1999 #ifndef OPENSSL_NO_ECDH
2000 EC_KEY *clnt_ecdh = NULL;
2001 const EC_POINT *srvr_ecpoint = NULL;
2002 EVP_PKEY *srvr_pub_pkey = NULL;
2003 unsigned char *encodedPoint = NULL;
2004 int encoded_pt_len = 0;
2005 BN_CTX * bn_ctx = NULL;
2008 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
2010 d=(unsigned char *)s->init_buf->data;
2013 l=s->s3->tmp.new_cipher->algorithms;
2015 /* Fool emacs indentation */
2017 #ifndef OPENSSL_NO_RSA
2018 else if (l & SSL_kRSA)
2021 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2023 if (s->session->sess_cert == NULL)
2025 /* We should always have a server certificate with SSL_kRSA. */
2026 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2030 if (s->session->sess_cert->peer_rsa_tmp != NULL)
2031 rsa=s->session->sess_cert->peer_rsa_tmp;
2034 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
2035 if ((pkey == NULL) ||
2036 (pkey->type != EVP_PKEY_RSA) ||
2037 (pkey->pkey.rsa == NULL))
2039 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
2043 EVP_PKEY_free(pkey);
2046 tmp_buf[0]=s->client_version>>8;
2047 tmp_buf[1]=s->client_version&0xff;
2048 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2051 s->session->master_key_length=sizeof tmp_buf;
2054 /* Fix buf for TLS and beyond */
2055 if (s->version > SSL3_VERSION)
2057 n=RSA_public_encrypt(sizeof tmp_buf,
2058 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
2060 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
2061 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
2065 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
2069 /* Fix buf for TLS and beyond */
2070 if (s->version > SSL3_VERSION)
2076 s->session->master_key_length=
2077 s->method->ssl3_enc->generate_master_secret(s,
2078 s->session->master_key,
2079 tmp_buf,sizeof tmp_buf);
2080 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
2083 #ifndef OPENSSL_NO_KRB5
2084 else if (l & SSL_kKRB5)
2086 krb5_error_code krb5rc;
2087 KSSL_CTX *kssl_ctx = s->kssl_ctx;
2088 /* krb5_data krb5_ap_req; */
2089 krb5_data *enc_ticket;
2090 krb5_data authenticator, *authp = NULL;
2091 EVP_CIPHER_CTX ciph_ctx;
2092 EVP_CIPHER *enc = NULL;
2093 unsigned char iv[EVP_MAX_IV_LENGTH];
2094 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
2095 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
2096 + EVP_MAX_IV_LENGTH];
2097 int padl, outl = sizeof(epms);
2099 EVP_CIPHER_CTX_init(&ciph_ctx);
2102 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
2104 #endif /* KSSL_DEBUG */
2108 if (KRB5SENDAUTH) authp = &authenticator;
2109 #endif /* KRB5SENDAUTH */
2111 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2113 enc = kssl_map_enc(kssl_ctx->enctype);
2118 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2119 if (krb5rc && kssl_err.text)
2120 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2122 #endif /* KSSL_DEBUG */
2126 ssl3_send_alert(s,SSL3_AL_FATAL,
2127 SSL_AD_HANDSHAKE_FAILURE);
2128 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2133 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2134 ** in place of RFC 2712 KerberosWrapper, as in:
2136 ** Send ticket (copy to *p, set n = length)
2137 ** n = krb5_ap_req.length;
2138 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2139 ** if (krb5_ap_req.data)
2140 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2142 ** Now using real RFC 2712 KerberosWrapper
2143 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2144 ** Note: 2712 "opaque" types are here replaced
2145 ** with a 2-byte length followed by the value.
2147 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2148 ** Where "xx xx" = length bytes. Shown here with
2149 ** optional authenticator omitted.
2152 /* KerberosWrapper.Ticket */
2153 s2n(enc_ticket->length,p);
2154 memcpy(p, enc_ticket->data, enc_ticket->length);
2155 p+= enc_ticket->length;
2156 n = enc_ticket->length + 2;
2158 /* KerberosWrapper.Authenticator */
2159 if (authp && authp->length)
2161 s2n(authp->length,p);
2162 memcpy(p, authp->data, authp->length);
2164 n+= authp->length + 2;
2172 s2n(0,p);/* null authenticator length */
2176 tmp_buf[0]=s->client_version>>8;
2177 tmp_buf[1]=s->client_version&0xff;
2178 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2181 /* 20010420 VRS. Tried it this way; failed.
2182 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2183 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2184 ** kssl_ctx->length);
2185 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2188 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2189 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2191 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2193 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2195 if (outl > sizeof epms)
2197 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2200 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2202 /* KerberosWrapper.EncryptedPreMasterSecret */
2204 memcpy(p, epms, outl);
2208 s->session->master_key_length=
2209 s->method->ssl3_enc->generate_master_secret(s,
2210 s->session->master_key,
2211 tmp_buf, sizeof tmp_buf);
2213 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2214 OPENSSL_cleanse(epms, outl);
2217 #ifndef OPENSSL_NO_DH
2218 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2220 DH *dh_srvr,*dh_clnt;
2222 if (s->session->sess_cert == NULL)
2224 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2225 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2229 if (s->session->sess_cert->peer_dh_tmp != NULL)
2230 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2233 /* we get them from the cert */
2234 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2235 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2239 /* generate a new random key */
2240 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2242 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2245 if (!DH_generate_key(dh_clnt))
2247 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2251 /* use the 'p' output buffer for the DH key, but
2252 * make sure to clear it out afterwards */
2254 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2258 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2262 /* generate master key from the result */
2263 s->session->master_key_length=
2264 s->method->ssl3_enc->generate_master_secret(s,
2265 s->session->master_key,p,n);
2269 /* send off the data */
2270 n=BN_num_bytes(dh_clnt->pub_key);
2272 BN_bn2bin(dh_clnt->pub_key,p);
2277 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2281 #ifndef OPENSSL_NO_ECDH
2282 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2284 const EC_GROUP *srvr_group = NULL;
2286 int ecdh_clnt_cert = 0;
2289 if (s->session->sess_cert == NULL)
2291 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2292 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2296 /* Did we send out the client's
2297 * ECDH share for use in premaster
2298 * computation as part of client certificate?
2299 * If so, set ecdh_clnt_cert to 1.
2301 if ((l & SSL_kECDH) && (s->cert != NULL))
2303 /* XXX: For now, we do not support client
2304 * authentication using ECDH certificates.
2305 * To add such support, one needs to add
2306 * code that checks for appropriate
2307 * conditions and sets ecdh_clnt_cert to 1.
2308 * For example, the cert have an ECC
2309 * key on the same curve as the server's
2310 * and the key should be authorized for
2313 * One also needs to add code in ssl3_connect
2314 * to skip sending the certificate verify
2317 * if ((s->cert->key->privatekey != NULL) &&
2318 * (s->cert->key->privatekey->type ==
2319 * EVP_PKEY_EC) && ...)
2320 * ecdh_clnt_cert = 1;
2324 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2326 tkey = s->session->sess_cert->peer_ecdh_tmp;
2330 /* Get the Server Public Key from Cert */
2331 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2332 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2333 if ((srvr_pub_pkey == NULL) ||
2334 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2335 (srvr_pub_pkey->pkey.ec == NULL))
2337 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2338 ERR_R_INTERNAL_ERROR);
2342 tkey = srvr_pub_pkey->pkey.ec;
2345 srvr_group = EC_KEY_get0_group(tkey);
2346 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2348 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2350 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2351 ERR_R_INTERNAL_ERROR);
2355 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2357 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2361 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2363 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2368 /* Reuse key info from our certificate
2369 * We only need our private key to perform
2370 * the ECDH computation.
2372 const BIGNUM *priv_key;
2373 tkey = s->cert->key->privatekey->pkey.ec;
2374 priv_key = EC_KEY_get0_private_key(tkey);
2375 if (priv_key == NULL)
2377 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2380 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2382 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2388 /* Generate a new ECDH key pair */
2389 if (!(EC_KEY_generate_key(clnt_ecdh)))
2391 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2396 /* use the 'p' output buffer for the ECDH key, but
2397 * make sure to clear it out afterwards
2400 field_size = EC_GROUP_get_degree(srvr_group);
2401 if (field_size <= 0)
2403 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2407 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2410 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2415 /* generate master key from the result */
2416 s->session->master_key_length = s->method->ssl3_enc \
2417 -> generate_master_secret(s,
2418 s->session->master_key,
2421 memset(p, 0, n); /* clean up */
2425 /* Send empty client key exch message */
2430 /* First check the size of encoding and
2431 * allocate memory accordingly.
2434 EC_POINT_point2oct(srvr_group,
2435 EC_KEY_get0_public_key(clnt_ecdh),
2436 POINT_CONVERSION_UNCOMPRESSED,
2439 encodedPoint = (unsigned char *)
2440 OPENSSL_malloc(encoded_pt_len *
2441 sizeof(unsigned char));
2442 bn_ctx = BN_CTX_new();
2443 if ((encodedPoint == NULL) ||
2446 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2450 /* Encode the public key */
2451 n = EC_POINT_point2oct(srvr_group,
2452 EC_KEY_get0_public_key(clnt_ecdh),
2453 POINT_CONVERSION_UNCOMPRESSED,
2454 encodedPoint, encoded_pt_len, bn_ctx);
2456 *p = n; /* length of encoded point */
2457 /* Encoded point will be copied here */
2459 /* copy the point */
2460 memcpy((unsigned char *)p, encodedPoint, n);
2461 /* increment n to account for length field */
2465 /* Free allocated memory */
2466 BN_CTX_free(bn_ctx);
2467 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2468 if (clnt_ecdh != NULL)
2469 EC_KEY_free(clnt_ecdh);
2470 EVP_PKEY_free(srvr_pub_pkey);
2472 #endif /* !OPENSSL_NO_ECDH */
2475 ssl3_send_alert(s, SSL3_AL_FATAL,
2476 SSL_AD_HANDSHAKE_FAILURE);
2477 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2478 ERR_R_INTERNAL_ERROR);
2482 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2485 s->state=SSL3_ST_CW_KEY_EXCH_B;
2486 /* number of bytes to write */
2491 /* SSL3_ST_CW_KEY_EXCH_B */
2492 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2494 #ifndef OPENSSL_NO_ECDH
2495 BN_CTX_free(bn_ctx);
2496 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2497 if (clnt_ecdh != NULL)
2498 EC_KEY_free(clnt_ecdh);
2499 EVP_PKEY_free(srvr_pub_pkey);
2504 int ssl3_send_client_verify(SSL *s)
2506 unsigned char *p,*d;
2507 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2509 #ifndef OPENSSL_NO_RSA
2513 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2517 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2519 d=(unsigned char *)s->init_buf->data;
2521 pkey=s->cert->key->privatekey;
2523 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2524 &(data[MD5_DIGEST_LENGTH]));
2526 #ifndef OPENSSL_NO_RSA
2527 if (pkey->type == EVP_PKEY_RSA)
2529 s->method->ssl3_enc->cert_verify_mac(s,
2530 &(s->s3->finish_dgst1),&(data[0]));
2531 if (RSA_sign(NID_md5_sha1, data,
2532 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2533 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2535 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2543 #ifndef OPENSSL_NO_DSA
2544 if (pkey->type == EVP_PKEY_DSA)
2546 if (!DSA_sign(pkey->save_type,
2547 &(data[MD5_DIGEST_LENGTH]),
2548 SHA_DIGEST_LENGTH,&(p[2]),
2549 (unsigned int *)&j,pkey->pkey.dsa))
2551 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2559 #ifndef OPENSSL_NO_ECDSA
2560 if (pkey->type == EVP_PKEY_EC)
2562 if (!ECDSA_sign(pkey->save_type,
2563 &(data[MD5_DIGEST_LENGTH]),
2564 SHA_DIGEST_LENGTH,&(p[2]),
2565 (unsigned int *)&j,pkey->pkey.ec))
2567 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2577 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2580 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2583 s->state=SSL3_ST_CW_CERT_VRFY_B;
2584 s->init_num=(int)n+4;
2587 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2592 int ssl3_send_client_certificate(SSL *s)
2595 EVP_PKEY *pkey=NULL;
2599 if (s->state == SSL3_ST_CW_CERT_A)
2601 if ((s->cert == NULL) ||
2602 (s->cert->key->x509 == NULL) ||
2603 (s->cert->key->privatekey == NULL))
2604 s->state=SSL3_ST_CW_CERT_B;
2606 s->state=SSL3_ST_CW_CERT_C;
2609 /* We need to get a client cert */
2610 if (s->state == SSL3_ST_CW_CERT_B)
2612 /* If we get an error, we need to
2613 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2614 * We then get retied later */
2616 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2619 s->rwstate=SSL_X509_LOOKUP;
2622 s->rwstate=SSL_NOTHING;
2623 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2625 s->state=SSL3_ST_CW_CERT_B;
2626 if ( !SSL_use_certificate(s,x509) ||
2627 !SSL_use_PrivateKey(s,pkey))
2633 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2636 if (x509 != NULL) X509_free(x509);
2637 if (pkey != NULL) EVP_PKEY_free(pkey);
2640 if (s->version == SSL3_VERSION)
2642 s->s3->tmp.cert_req=0;
2643 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2648 s->s3->tmp.cert_req=2;
2652 /* Ok, we have a cert */
2653 s->state=SSL3_ST_CW_CERT_C;
2656 if (s->state == SSL3_ST_CW_CERT_C)
2658 s->state=SSL3_ST_CW_CERT_D;
2659 l=ssl3_output_cert_chain(s,
2660 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2664 /* SSL3_ST_CW_CERT_D */
2665 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2668 #define has_bits(i,m) (((i)&(m)) == (m))
2670 int ssl3_check_cert_and_algorithm(SSL *s)
2674 EVP_PKEY *pkey=NULL;
2676 #ifndef OPENSSL_NO_RSA
2679 #ifndef OPENSSL_NO_DH
2683 sc=s->session->sess_cert;
2685 algs=s->s3->tmp.new_cipher->algorithms;
2687 /* we don't have a certificate */
2688 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2693 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2697 #ifndef OPENSSL_NO_RSA
2698 rsa=s->session->sess_cert->peer_rsa_tmp;
2700 #ifndef OPENSSL_NO_DH
2701 dh=s->session->sess_cert->peer_dh_tmp;
2704 /* This is the passed certificate */
2706 idx=sc->peer_cert_type;
2707 #ifndef OPENSSL_NO_ECDH
2708 if (idx == SSL_PKEY_ECC)
2710 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2711 s->s3->tmp.new_cipher) == 0)
2712 { /* check failed */
2713 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2722 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2723 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2724 EVP_PKEY_free(pkey);
2727 /* Check that we have a certificate if we require one */
2728 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2730 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2733 #ifndef OPENSSL_NO_DSA
2734 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2736 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2740 #ifndef OPENSSL_NO_RSA
2741 if ((algs & SSL_kRSA) &&
2742 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2744 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2748 #ifndef OPENSSL_NO_DH
2749 if ((algs & SSL_kEDH) &&
2750 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2752 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2755 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2757 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2760 #ifndef OPENSSL_NO_DSA
2761 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2763 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2769 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2771 #ifndef OPENSSL_NO_RSA
2772 if (algs & SSL_kRSA)
2775 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2777 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2783 #ifndef OPENSSL_NO_DH
2784 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2787 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2789 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2796 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2802 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2808 #ifndef OPENSSL_NO_ECDH
2809 /* This is the complement of nid2curve_id in s3_srvr.c. */
2810 static int curve_id2nid(int curve_id)
2812 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2813 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2814 static int nid_list[26] =
2817 NID_sect163k1, /* sect163k1 (1) */
2818 NID_sect163r1, /* sect163r1 (2) */
2819 NID_sect163r2, /* sect163r2 (3) */
2820 NID_sect193r1, /* sect193r1 (4) */
2821 NID_sect193r2, /* sect193r2 (5) */
2822 NID_sect233k1, /* sect233k1 (6) */
2823 NID_sect233r1, /* sect233r1 (7) */
2824 NID_sect239k1, /* sect239k1 (8) */
2825 NID_sect283k1, /* sect283k1 (9) */
2826 NID_sect283r1, /* sect283r1 (10) */
2827 NID_sect409k1, /* sect409k1 (11) */
2828 NID_sect409r1, /* sect409r1 (12) */
2829 NID_sect571k1, /* sect571k1 (13) */
2830 NID_sect571r1, /* sect571r1 (14) */
2831 NID_secp160k1, /* secp160k1 (15) */
2832 NID_secp160r1, /* secp160r1 (16) */
2833 NID_secp160r2, /* secp160r2 (17) */
2834 NID_secp192k1, /* secp192k1 (18) */
2835 NID_X9_62_prime192v1, /* secp192r1 (19) */
2836 NID_secp224k1, /* secp224k1 (20) */
2837 NID_secp224r1, /* secp224r1 (21) */
2838 NID_secp256k1, /* secp256k1 (22) */
2839 NID_X9_62_prime256v1, /* secp256r1 (23) */
2840 NID_secp384r1, /* secp384r1 (24) */
2841 NID_secp521r1 /* secp521r1 (25) */
2844 if ((curve_id < 1) || (curve_id > 25)) return 0;
2846 return nid_list[curve_id];
2850 /* Check to see if handshake is full or resumed. Usually this is just a
2851 * case of checking to see if a cache hit has occurred. In the case of
2852 * session tickets we have to check the next message to be sure.
2855 #ifndef OPENSSL_NO_TLSEXT
2856 int ssl3_check_finished(SSL *s)
2860 /* If we have no ticket or session ID is non-zero length (a match of
2861 * a non-zero session length would never reach here) it cannot be a
2864 if (!s->session->tlsext_tick || s->session->session_id_length)
2866 /* this function is called when we really expect a Certificate
2867 * message, so permit appropriate message length */
2868 n=s->method->ssl_get_message(s,
2874 if (!ok) return((int)n);
2875 s->s3->tmp.reuse_message = 1;
2876 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2877 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2884 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2887 #ifndef OPENSSL_NO_ENGINE
2888 if (s->ctx->client_cert_engine)
2890 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2891 SSL_get_client_CA_list(s),
2892 px509, ppkey, NULL, NULL, NULL);
2897 if (s->ctx->client_cert_cb)
2898 i = s->ctx->client_cert_cb(s,px509,ppkey);