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;
1098 int al,i,j,param_len,ok;
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 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1128 s->s3->tmp.reuse_message=1;
1132 param=p=(unsigned char *)s->init_msg;
1134 if (s->session->sess_cert != NULL)
1136 #ifndef OPENSSL_NO_RSA
1137 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1139 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1140 s->session->sess_cert->peer_rsa_tmp=NULL;
1143 #ifndef OPENSSL_NO_DH
1144 if (s->session->sess_cert->peer_dh_tmp)
1146 DH_free(s->session->sess_cert->peer_dh_tmp);
1147 s->session->sess_cert->peer_dh_tmp=NULL;
1150 #ifndef OPENSSL_NO_ECDH
1151 if (s->session->sess_cert->peer_ecdh_tmp)
1153 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1154 s->session->sess_cert->peer_ecdh_tmp=NULL;
1160 s->session->sess_cert=ssl_sess_cert_new();
1164 alg=s->s3->tmp.new_cipher->algorithms;
1165 EVP_MD_CTX_init(&md_ctx);
1167 #ifndef OPENSSL_NO_RSA
1170 if ((rsa=RSA_new()) == NULL)
1172 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1179 al=SSL_AD_DECODE_ERROR;
1180 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1183 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1185 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1194 al=SSL_AD_DECODE_ERROR;
1195 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1198 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1200 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1206 /* this should be because we are using an export cipher */
1208 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1211 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1214 s->session->sess_cert->peer_rsa_tmp=rsa;
1217 #else /* OPENSSL_NO_RSA */
1221 #ifndef OPENSSL_NO_DH
1222 else if (alg & SSL_kEDH)
1224 if ((dh=DH_new()) == NULL)
1226 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1233 al=SSL_AD_DECODE_ERROR;
1234 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1237 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1239 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1248 al=SSL_AD_DECODE_ERROR;
1249 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1252 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1254 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1263 al=SSL_AD_DECODE_ERROR;
1264 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1267 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1269 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1275 #ifndef OPENSSL_NO_RSA
1277 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1282 #ifndef OPENSSL_NO_DSA
1283 else if (alg & SSL_aDSS)
1284 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1286 /* else anonymous DH, so no certificate or pkey. */
1288 s->session->sess_cert->peer_dh_tmp=dh;
1291 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1293 al=SSL_AD_ILLEGAL_PARAMETER;
1294 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1297 #endif /* !OPENSSL_NO_DH */
1299 #ifndef OPENSSL_NO_ECDH
1300 else if (alg & SSL_kECDHE)
1303 const EC_GROUP *group;
1305 if ((ecdh=EC_KEY_new()) == NULL)
1307 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1311 /* Extract elliptic curve parameters and the
1312 * server's ephemeral ECDH public key.
1313 * Keep accumulating lengths of various components in
1314 * param_len and make sure it never exceeds n.
1317 /* XXX: For now we only support named (not generic) curves
1318 * and the ECParameters in this case is just three bytes.
1321 if ((param_len > n) ||
1322 (*p != NAMED_CURVE_TYPE) ||
1323 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1325 al=SSL_AD_INTERNAL_ERROR;
1326 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1330 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1336 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1338 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1341 EC_GROUP_free(ngroup);
1343 group = EC_KEY_get0_group(ecdh);
1345 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1346 (EC_GROUP_get_degree(group) > 163))
1348 al=SSL_AD_EXPORT_RESTRICTION;
1349 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1355 /* Next, get the encoded ECPoint */
1356 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1357 ((bn_ctx = BN_CTX_new()) == NULL))
1359 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1363 encoded_pt_len = *p; /* length of encoded point */
1365 param_len += (1 + encoded_pt_len);
1366 if ((param_len > n) ||
1367 (EC_POINT_oct2point(group, srvr_ecpoint,
1368 p, encoded_pt_len, bn_ctx) == 0))
1370 al=SSL_AD_DECODE_ERROR;
1371 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1378 /* The ECC/TLS specification does not mention
1379 * the use of DSA to sign ECParameters in the server
1380 * key exchange message. We do support RSA and ECDSA.
1383 #ifndef OPENSSL_NO_RSA
1384 else if (alg & SSL_aRSA)
1385 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1387 #ifndef OPENSSL_NO_ECDSA
1388 else if (alg & SSL_aECDSA)
1389 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1391 /* else anonymous ECDH, so no certificate or pkey. */
1392 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1393 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1395 BN_CTX_free(bn_ctx);
1397 EC_POINT_free(srvr_ecpoint);
1398 srvr_ecpoint = NULL;
1400 else if (alg & SSL_kECDH)
1402 al=SSL_AD_UNEXPECTED_MESSAGE;
1403 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1406 #endif /* !OPENSSL_NO_ECDH */
1409 al=SSL_AD_HANDSHAKE_FAILURE;
1410 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1415 /* p points to the next byte, there are 'n' bytes left */
1417 /* if it was signed, check the signature */
1422 j=EVP_PKEY_size(pkey);
1424 if ((i != n) || (n > j) || (n <= 0))
1426 /* wrong packet length */
1427 al=SSL_AD_DECODE_ERROR;
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1432 #ifndef OPENSSL_NO_RSA
1433 if (pkey->type == EVP_PKEY_RSA)
1439 for (num=2; num > 0; num--)
1441 EVP_MD_CTX_set_flags(&md_ctx,
1442 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1443 EVP_DigestInit_ex(&md_ctx,(num == 2)
1444 ?s->ctx->md5:s->ctx->sha1, NULL);
1445 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1446 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1447 EVP_DigestUpdate(&md_ctx,param,param_len);
1448 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1452 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1456 al=SSL_AD_DECRYPT_ERROR;
1457 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1463 al=SSL_AD_DECRYPT_ERROR;
1464 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1470 #ifndef OPENSSL_NO_DSA
1471 if (pkey->type == EVP_PKEY_DSA)
1474 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1475 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1476 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1477 EVP_VerifyUpdate(&md_ctx,param,param_len);
1478 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1481 al=SSL_AD_DECRYPT_ERROR;
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1488 #ifndef OPENSSL_NO_ECDSA
1489 if (pkey->type == EVP_PKEY_EC)
1491 /* let's do ECDSA */
1492 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1493 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1494 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1495 EVP_VerifyUpdate(&md_ctx,param,param_len);
1496 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1499 al=SSL_AD_DECRYPT_ERROR;
1500 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1507 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1513 /* still data left over */
1514 if (!(alg & SSL_aNULL))
1516 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1521 al=SSL_AD_DECODE_ERROR;
1522 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1526 EVP_PKEY_free(pkey);
1527 EVP_MD_CTX_cleanup(&md_ctx);
1530 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1532 EVP_PKEY_free(pkey);
1533 #ifndef OPENSSL_NO_RSA
1537 #ifndef OPENSSL_NO_DH
1541 #ifndef OPENSSL_NO_ECDH
1542 BN_CTX_free(bn_ctx);
1543 EC_POINT_free(srvr_ecpoint);
1547 EVP_MD_CTX_cleanup(&md_ctx);
1551 int ssl3_get_certificate_request(SSL *s)
1554 unsigned long n,nc,l;
1555 unsigned int llen,ctype_num,i;
1557 const unsigned char *p,*q;
1559 STACK_OF(X509_NAME) *ca_sk=NULL;
1561 n=s->method->ssl_get_message(s,
1562 SSL3_ST_CR_CERT_REQ_A,
1563 SSL3_ST_CR_CERT_REQ_B,
1568 if (!ok) return((int)n);
1570 s->s3->tmp.cert_req=0;
1572 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1574 s->s3->tmp.reuse_message=1;
1578 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1580 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1581 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1585 /* TLS does not like anon-DH with client cert */
1586 if (s->version > SSL3_VERSION)
1588 l=s->s3->tmp.new_cipher->algorithms;
1591 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1592 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1597 p=d=(unsigned char *)s->init_msg;
1599 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1601 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1605 /* get the certificate types */
1607 if (ctype_num > SSL3_CT_NUMBER)
1608 ctype_num=SSL3_CT_NUMBER;
1609 for (i=0; i<ctype_num; i++)
1610 s->s3->tmp.ctype[i]= p[i];
1613 /* get the CA RDNs */
1618 out=fopen("/tmp/vsign.der","w");
1619 fwrite(p,1,llen,out);
1624 if ((llen+ctype_num+2+1) != n)
1626 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1627 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1631 for (nc=0; nc<llen; )
1634 if ((l+nc+2) > llen)
1636 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1637 goto cont; /* netscape bugs */
1638 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1639 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1645 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1647 /* If netscape tolerance is on, ignore errors */
1648 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1652 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1653 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1660 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1661 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1664 if (!sk_X509_NAME_push(ca_sk,xn))
1666 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1680 /* we should setup a certificate to return.... */
1681 s->s3->tmp.cert_req=1;
1682 s->s3->tmp.ctype_num=ctype_num;
1683 if (s->s3->tmp.ca_names != NULL)
1684 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1685 s->s3->tmp.ca_names=ca_sk;
1690 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1694 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1696 return(X509_NAME_cmp(*a,*b));
1698 #ifndef OPENSSL_NO_TLSEXT
1699 int ssl3_get_new_session_ticket(SSL *s)
1701 int ok,al,ret=0, ticklen;
1703 const unsigned char *p;
1706 n=s->method->ssl_get_message(s,
1707 SSL3_ST_CR_SESSION_TICKET_A,
1708 SSL3_ST_CR_SESSION_TICKET_B,
1716 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1718 s->s3->tmp.reuse_message=1;
1721 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1723 al=SSL_AD_UNEXPECTED_MESSAGE;
1724 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1729 /* need at least ticket_lifetime_hint + ticket length */
1730 al = SSL_AD_DECODE_ERROR;
1731 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1735 p=d=(unsigned char *)s->init_msg;
1736 n2l(p, s->session->tlsext_tick_lifetime_hint);
1738 /* ticket_lifetime_hint + ticket_length + ticket */
1739 if (ticklen + 6 != n)
1741 al = SSL_AD_DECODE_ERROR;
1742 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1745 if (s->session->tlsext_tick)
1747 OPENSSL_free(s->session->tlsext_tick);
1748 s->session->tlsext_ticklen = 0;
1750 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1751 if (!s->session->tlsext_tick)
1753 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1756 memcpy(s->session->tlsext_tick, p, ticklen);
1757 s->session->tlsext_ticklen = ticklen;
1758 /* There are two ways to detect a resumed ticket sesion.
1759 * One is to set an appropriate session ID and then the server
1760 * must return a match in ServerHello. This allows the normal
1761 * client session ID matching to work and we know much
1762 * earlier that the ticket has been accepted.
1764 * The other way is to set zero length session ID when the
1765 * ticket is presented and rely on the handshake to determine
1766 * session resumption.
1768 * We choose the former approach because this fits in with
1769 * assumptions elsewhere in OpenSSL. The session ID is set
1770 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1773 EVP_Digest(p, ticklen,
1774 s->session->session_id, &s->session->session_id_length,
1775 #ifndef OPENSSL_NO_SHA256
1776 EVP_sha256(), NULL);
1783 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1788 int ssl3_get_cert_status(SSL *s)
1791 unsigned long resplen;
1793 const unsigned char *p;
1795 n=s->method->ssl_get_message(s,
1796 SSL3_ST_CR_CERT_STATUS_A,
1797 SSL3_ST_CR_CERT_STATUS_B,
1798 SSL3_MT_CERTIFICATE_STATUS,
1802 if (!ok) return((int)n);
1805 /* need at least status type + length */
1806 al = SSL_AD_DECODE_ERROR;
1807 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1810 p = (unsigned char *)s->init_msg;
1811 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1813 al = SSL_AD_DECODE_ERROR;
1814 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1818 if (resplen + 4 != (unsigned long)n)
1820 al = SSL_AD_DECODE_ERROR;
1821 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1824 if (s->tlsext_ocsp_resp)
1825 OPENSSL_free(s->tlsext_ocsp_resp);
1826 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1827 if (!s->tlsext_ocsp_resp)
1829 al = SSL_AD_INTERNAL_ERROR;
1830 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1833 s->tlsext_ocsp_resplen = resplen;
1834 if (s->ctx->tlsext_status_cb)
1837 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1840 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1841 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1846 al = SSL_AD_INTERNAL_ERROR;
1847 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1853 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1858 int ssl3_get_server_done(SSL *s)
1863 n=s->method->ssl_get_message(s,
1864 SSL3_ST_CR_SRVR_DONE_A,
1865 SSL3_ST_CR_SRVR_DONE_B,
1866 SSL3_MT_SERVER_DONE,
1867 30, /* should be very small, like 0 :-) */
1870 if (!ok) return((int)n);
1873 /* should contain no data */
1874 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1875 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1883 int ssl3_send_client_key_exchange(SSL *s)
1885 unsigned char *p,*d;
1888 #ifndef OPENSSL_NO_RSA
1890 EVP_PKEY *pkey=NULL;
1892 #ifndef OPENSSL_NO_KRB5
1894 #endif /* OPENSSL_NO_KRB5 */
1895 #ifndef OPENSSL_NO_ECDH
1896 EC_KEY *clnt_ecdh = NULL;
1897 const EC_POINT *srvr_ecpoint = NULL;
1898 EVP_PKEY *srvr_pub_pkey = NULL;
1899 unsigned char *encodedPoint = NULL;
1900 int encoded_pt_len = 0;
1901 BN_CTX * bn_ctx = NULL;
1904 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1906 d=(unsigned char *)s->init_buf->data;
1909 l=s->s3->tmp.new_cipher->algorithms;
1911 /* Fool emacs indentation */
1913 #ifndef OPENSSL_NO_RSA
1914 else if (l & SSL_kRSA)
1917 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1919 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1920 rsa=s->session->sess_cert->peer_rsa_tmp;
1923 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1924 if ((pkey == NULL) ||
1925 (pkey->type != EVP_PKEY_RSA) ||
1926 (pkey->pkey.rsa == NULL))
1928 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1932 EVP_PKEY_free(pkey);
1935 tmp_buf[0]=s->client_version>>8;
1936 tmp_buf[1]=s->client_version&0xff;
1937 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1940 s->session->master_key_length=sizeof tmp_buf;
1943 /* Fix buf for TLS and beyond */
1944 if (s->version > SSL3_VERSION)
1946 n=RSA_public_encrypt(sizeof tmp_buf,
1947 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1949 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1950 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1954 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1958 /* Fix buf for TLS and beyond */
1959 if (s->version > SSL3_VERSION)
1965 s->session->master_key_length=
1966 s->method->ssl3_enc->generate_master_secret(s,
1967 s->session->master_key,
1968 tmp_buf,sizeof tmp_buf);
1969 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1972 #ifndef OPENSSL_NO_KRB5
1973 else if (l & SSL_kKRB5)
1975 krb5_error_code krb5rc;
1976 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1977 /* krb5_data krb5_ap_req; */
1978 krb5_data *enc_ticket;
1979 krb5_data authenticator, *authp = NULL;
1980 EVP_CIPHER_CTX ciph_ctx;
1981 EVP_CIPHER *enc = NULL;
1982 unsigned char iv[EVP_MAX_IV_LENGTH];
1983 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1984 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1985 + EVP_MAX_IV_LENGTH];
1986 int padl, outl = sizeof(epms);
1988 EVP_CIPHER_CTX_init(&ciph_ctx);
1991 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1993 #endif /* KSSL_DEBUG */
1997 if (KRB5SENDAUTH) authp = &authenticator;
1998 #endif /* KRB5SENDAUTH */
2000 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2002 enc = kssl_map_enc(kssl_ctx->enctype);
2007 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2008 if (krb5rc && kssl_err.text)
2009 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2011 #endif /* KSSL_DEBUG */
2015 ssl3_send_alert(s,SSL3_AL_FATAL,
2016 SSL_AD_HANDSHAKE_FAILURE);
2017 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2022 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2023 ** in place of RFC 2712 KerberosWrapper, as in:
2025 ** Send ticket (copy to *p, set n = length)
2026 ** n = krb5_ap_req.length;
2027 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2028 ** if (krb5_ap_req.data)
2029 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2031 ** Now using real RFC 2712 KerberosWrapper
2032 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2033 ** Note: 2712 "opaque" types are here replaced
2034 ** with a 2-byte length followed by the value.
2036 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2037 ** Where "xx xx" = length bytes. Shown here with
2038 ** optional authenticator omitted.
2041 /* KerberosWrapper.Ticket */
2042 s2n(enc_ticket->length,p);
2043 memcpy(p, enc_ticket->data, enc_ticket->length);
2044 p+= enc_ticket->length;
2045 n = enc_ticket->length + 2;
2047 /* KerberosWrapper.Authenticator */
2048 if (authp && authp->length)
2050 s2n(authp->length,p);
2051 memcpy(p, authp->data, authp->length);
2053 n+= authp->length + 2;
2061 s2n(0,p);/* null authenticator length */
2065 tmp_buf[0]=s->client_version>>8;
2066 tmp_buf[1]=s->client_version&0xff;
2067 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2070 /* 20010420 VRS. Tried it this way; failed.
2071 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2072 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2073 ** kssl_ctx->length);
2074 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2077 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2078 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2080 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2082 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2084 if (outl > sizeof epms)
2086 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2089 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2091 /* KerberosWrapper.EncryptedPreMasterSecret */
2093 memcpy(p, epms, outl);
2097 s->session->master_key_length=
2098 s->method->ssl3_enc->generate_master_secret(s,
2099 s->session->master_key,
2100 tmp_buf, sizeof tmp_buf);
2102 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2103 OPENSSL_cleanse(epms, outl);
2106 #ifndef OPENSSL_NO_DH
2107 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2109 DH *dh_srvr,*dh_clnt;
2111 if (s->session->sess_cert == NULL)
2113 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2114 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2118 if (s->session->sess_cert->peer_dh_tmp != NULL)
2119 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2122 /* we get them from the cert */
2123 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2124 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2128 /* generate a new random key */
2129 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2131 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2134 if (!DH_generate_key(dh_clnt))
2136 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2140 /* use the 'p' output buffer for the DH key, but
2141 * make sure to clear it out afterwards */
2143 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2147 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2151 /* generate master key from the result */
2152 s->session->master_key_length=
2153 s->method->ssl3_enc->generate_master_secret(s,
2154 s->session->master_key,p,n);
2158 /* send off the data */
2159 n=BN_num_bytes(dh_clnt->pub_key);
2161 BN_bn2bin(dh_clnt->pub_key,p);
2166 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2170 #ifndef OPENSSL_NO_ECDH
2171 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2173 const EC_GROUP *srvr_group = NULL;
2175 int ecdh_clnt_cert = 0;
2178 if (s->session->sess_cert == NULL)
2180 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2181 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2185 /* Did we send out the client's
2186 * ECDH share for use in premaster
2187 * computation as part of client certificate?
2188 * If so, set ecdh_clnt_cert to 1.
2190 if ((l & SSL_kECDH) && (s->cert != NULL))
2192 /* XXX: For now, we do not support client
2193 * authentication using ECDH certificates.
2194 * To add such support, one needs to add
2195 * code that checks for appropriate
2196 * conditions and sets ecdh_clnt_cert to 1.
2197 * For example, the cert have an ECC
2198 * key on the same curve as the server's
2199 * and the key should be authorized for
2202 * One also needs to add code in ssl3_connect
2203 * to skip sending the certificate verify
2206 * if ((s->cert->key->privatekey != NULL) &&
2207 * (s->cert->key->privatekey->type ==
2208 * EVP_PKEY_EC) && ...)
2209 * ecdh_clnt_cert = 1;
2213 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2215 tkey = s->session->sess_cert->peer_ecdh_tmp;
2219 /* Get the Server Public Key from Cert */
2220 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2221 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2222 if ((srvr_pub_pkey == NULL) ||
2223 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2224 (srvr_pub_pkey->pkey.ec == NULL))
2226 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2227 ERR_R_INTERNAL_ERROR);
2231 tkey = srvr_pub_pkey->pkey.ec;
2234 srvr_group = EC_KEY_get0_group(tkey);
2235 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2237 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2239 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2240 ERR_R_INTERNAL_ERROR);
2244 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2246 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2250 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2252 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2257 /* Reuse key info from our certificate
2258 * We only need our private key to perform
2259 * the ECDH computation.
2261 const BIGNUM *priv_key;
2262 tkey = s->cert->key->privatekey->pkey.ec;
2263 priv_key = EC_KEY_get0_private_key(tkey);
2264 if (priv_key == NULL)
2266 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2269 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2271 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2277 /* Generate a new ECDH key pair */
2278 if (!(EC_KEY_generate_key(clnt_ecdh)))
2280 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2285 /* use the 'p' output buffer for the ECDH key, but
2286 * make sure to clear it out afterwards
2289 field_size = EC_GROUP_get_degree(srvr_group);
2290 if (field_size <= 0)
2292 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2296 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2299 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2304 /* generate master key from the result */
2305 s->session->master_key_length = s->method->ssl3_enc \
2306 -> generate_master_secret(s,
2307 s->session->master_key,
2310 memset(p, 0, n); /* clean up */
2314 /* Send empty client key exch message */
2319 /* First check the size of encoding and
2320 * allocate memory accordingly.
2323 EC_POINT_point2oct(srvr_group,
2324 EC_KEY_get0_public_key(clnt_ecdh),
2325 POINT_CONVERSION_UNCOMPRESSED,
2328 encodedPoint = (unsigned char *)
2329 OPENSSL_malloc(encoded_pt_len *
2330 sizeof(unsigned char));
2331 bn_ctx = BN_CTX_new();
2332 if ((encodedPoint == NULL) ||
2335 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2339 /* Encode the public key */
2340 n = EC_POINT_point2oct(srvr_group,
2341 EC_KEY_get0_public_key(clnt_ecdh),
2342 POINT_CONVERSION_UNCOMPRESSED,
2343 encodedPoint, encoded_pt_len, bn_ctx);
2345 *p = n; /* length of encoded point */
2346 /* Encoded point will be copied here */
2348 /* copy the point */
2349 memcpy((unsigned char *)p, encodedPoint, n);
2350 /* increment n to account for length field */
2354 /* Free allocated memory */
2355 BN_CTX_free(bn_ctx);
2356 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2357 if (clnt_ecdh != NULL)
2358 EC_KEY_free(clnt_ecdh);
2359 EVP_PKEY_free(srvr_pub_pkey);
2361 #endif /* !OPENSSL_NO_ECDH */
2364 ssl3_send_alert(s, SSL3_AL_FATAL,
2365 SSL_AD_HANDSHAKE_FAILURE);
2366 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2367 ERR_R_INTERNAL_ERROR);
2371 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2374 s->state=SSL3_ST_CW_KEY_EXCH_B;
2375 /* number of bytes to write */
2380 /* SSL3_ST_CW_KEY_EXCH_B */
2381 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2383 #ifndef OPENSSL_NO_ECDH
2384 BN_CTX_free(bn_ctx);
2385 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2386 if (clnt_ecdh != NULL)
2387 EC_KEY_free(clnt_ecdh);
2388 EVP_PKEY_free(srvr_pub_pkey);
2393 int ssl3_send_client_verify(SSL *s)
2395 unsigned char *p,*d;
2396 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2398 #ifndef OPENSSL_NO_RSA
2402 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2406 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2408 d=(unsigned char *)s->init_buf->data;
2410 pkey=s->cert->key->privatekey;
2412 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2413 &(data[MD5_DIGEST_LENGTH]));
2415 #ifndef OPENSSL_NO_RSA
2416 if (pkey->type == EVP_PKEY_RSA)
2418 s->method->ssl3_enc->cert_verify_mac(s,
2419 &(s->s3->finish_dgst1),&(data[0]));
2420 if (RSA_sign(NID_md5_sha1, data,
2421 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2422 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2424 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2432 #ifndef OPENSSL_NO_DSA
2433 if (pkey->type == EVP_PKEY_DSA)
2435 if (!DSA_sign(pkey->save_type,
2436 &(data[MD5_DIGEST_LENGTH]),
2437 SHA_DIGEST_LENGTH,&(p[2]),
2438 (unsigned int *)&j,pkey->pkey.dsa))
2440 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2448 #ifndef OPENSSL_NO_ECDSA
2449 if (pkey->type == EVP_PKEY_EC)
2451 if (!ECDSA_sign(pkey->save_type,
2452 &(data[MD5_DIGEST_LENGTH]),
2453 SHA_DIGEST_LENGTH,&(p[2]),
2454 (unsigned int *)&j,pkey->pkey.ec))
2456 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2466 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2469 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2472 s->state=SSL3_ST_CW_CERT_VRFY_B;
2473 s->init_num=(int)n+4;
2476 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2481 int ssl3_send_client_certificate(SSL *s)
2484 EVP_PKEY *pkey=NULL;
2488 if (s->state == SSL3_ST_CW_CERT_A)
2490 if ((s->cert == NULL) ||
2491 (s->cert->key->x509 == NULL) ||
2492 (s->cert->key->privatekey == NULL))
2493 s->state=SSL3_ST_CW_CERT_B;
2495 s->state=SSL3_ST_CW_CERT_C;
2498 /* We need to get a client cert */
2499 if (s->state == SSL3_ST_CW_CERT_B)
2501 /* If we get an error, we need to
2502 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2503 * We then get retied later */
2505 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2508 s->rwstate=SSL_X509_LOOKUP;
2511 s->rwstate=SSL_NOTHING;
2512 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2514 s->state=SSL3_ST_CW_CERT_B;
2515 if ( !SSL_use_certificate(s,x509) ||
2516 !SSL_use_PrivateKey(s,pkey))
2522 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2525 if (x509 != NULL) X509_free(x509);
2526 if (pkey != NULL) EVP_PKEY_free(pkey);
2529 if (s->version == SSL3_VERSION)
2531 s->s3->tmp.cert_req=0;
2532 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2537 s->s3->tmp.cert_req=2;
2541 /* Ok, we have a cert */
2542 s->state=SSL3_ST_CW_CERT_C;
2545 if (s->state == SSL3_ST_CW_CERT_C)
2547 s->state=SSL3_ST_CW_CERT_D;
2548 l=ssl3_output_cert_chain(s,
2549 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2553 /* SSL3_ST_CW_CERT_D */
2554 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2557 #define has_bits(i,m) (((i)&(m)) == (m))
2559 int ssl3_check_cert_and_algorithm(SSL *s)
2563 EVP_PKEY *pkey=NULL;
2565 #ifndef OPENSSL_NO_RSA
2568 #ifndef OPENSSL_NO_DH
2572 sc=s->session->sess_cert;
2574 algs=s->s3->tmp.new_cipher->algorithms;
2576 /* we don't have a certificate */
2577 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2582 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2586 #ifndef OPENSSL_NO_RSA
2587 rsa=s->session->sess_cert->peer_rsa_tmp;
2589 #ifndef OPENSSL_NO_DH
2590 dh=s->session->sess_cert->peer_dh_tmp;
2593 /* This is the passed certificate */
2595 idx=sc->peer_cert_type;
2596 #ifndef OPENSSL_NO_ECDH
2597 if (idx == SSL_PKEY_ECC)
2599 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2600 s->s3->tmp.new_cipher) == 0)
2601 { /* check failed */
2602 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2611 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2612 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2613 EVP_PKEY_free(pkey);
2616 /* Check that we have a certificate if we require one */
2617 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2619 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2622 #ifndef OPENSSL_NO_DSA
2623 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2625 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2629 #ifndef OPENSSL_NO_RSA
2630 if ((algs & SSL_kRSA) &&
2631 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2633 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2637 #ifndef OPENSSL_NO_DH
2638 if ((algs & SSL_kEDH) &&
2639 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2641 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2644 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2646 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2649 #ifndef OPENSSL_NO_DSA
2650 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2652 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2658 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2660 #ifndef OPENSSL_NO_RSA
2661 if (algs & SSL_kRSA)
2664 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2666 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2672 #ifndef OPENSSL_NO_DH
2673 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2676 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2678 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2685 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2691 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2697 #ifndef OPENSSL_NO_ECDH
2698 /* This is the complement of nid2curve_id in s3_srvr.c. */
2699 static int curve_id2nid(int curve_id)
2701 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2702 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2703 static int nid_list[26] =
2706 NID_sect163k1, /* sect163k1 (1) */
2707 NID_sect163r1, /* sect163r1 (2) */
2708 NID_sect163r2, /* sect163r2 (3) */
2709 NID_sect193r1, /* sect193r1 (4) */
2710 NID_sect193r2, /* sect193r2 (5) */
2711 NID_sect233k1, /* sect233k1 (6) */
2712 NID_sect233r1, /* sect233r1 (7) */
2713 NID_sect239k1, /* sect239k1 (8) */
2714 NID_sect283k1, /* sect283k1 (9) */
2715 NID_sect283r1, /* sect283r1 (10) */
2716 NID_sect409k1, /* sect409k1 (11) */
2717 NID_sect409r1, /* sect409r1 (12) */
2718 NID_sect571k1, /* sect571k1 (13) */
2719 NID_sect571r1, /* sect571r1 (14) */
2720 NID_secp160k1, /* secp160k1 (15) */
2721 NID_secp160r1, /* secp160r1 (16) */
2722 NID_secp160r2, /* secp160r2 (17) */
2723 NID_secp192k1, /* secp192k1 (18) */
2724 NID_X9_62_prime192v1, /* secp192r1 (19) */
2725 NID_secp224k1, /* secp224k1 (20) */
2726 NID_secp224r1, /* secp224r1 (21) */
2727 NID_secp256k1, /* secp256k1 (22) */
2728 NID_X9_62_prime256v1, /* secp256r1 (23) */
2729 NID_secp384r1, /* secp384r1 (24) */
2730 NID_secp521r1 /* secp521r1 (25) */
2733 if ((curve_id < 1) || (curve_id > 25)) return 0;
2735 return nid_list[curve_id];
2739 /* Check to see if handshake is full or resumed. Usually this is just a
2740 * case of checking to see if a cache hit has occurred. In the case of
2741 * session tickets we have to check the next message to be sure.
2744 #ifndef OPENSSL_NO_TLSEXT
2745 int ssl3_check_finished(SSL *s)
2749 /* If we have no ticket or session ID is non-zero length (a match of
2750 * a non-zero session length would never reach here) it cannot be a
2753 if (!s->session->tlsext_tick || s->session->session_id_length)
2755 /* this function is called when we really expect a Certificate
2756 * message, so permit appropriate message length */
2757 n=s->method->ssl_get_message(s,
2763 if (!ok) return((int)n);
2764 s->s3->tmp.reuse_message = 1;
2765 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2766 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2773 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2776 #ifndef OPENSSL_NO_ENGINE
2777 if (s->ctx->client_cert_engine)
2779 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2780 SSL_get_client_CA_list(s),
2781 px509, ppkey, NULL, NULL, NULL);
2786 if (s->ctx->client_cert_cb)
2787 i = s->ctx->client_cert_cb(s,px509,ppkey);