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;
265 s->state=SSL3_ST_CR_FINISHED_A;
267 s->state=SSL3_ST_CR_CERT_A;
271 case SSL3_ST_CR_CERT_A:
272 case SSL3_ST_CR_CERT_B:
273 #ifndef OPENSSL_NO_TLSEXT
274 ret=ssl3_check_finished(s);
275 if (ret <= 0) goto end;
279 if (s->tlsext_ticket_expected)
280 s->state=SSL3_ST_CR_SESSION_TICKET_A;
282 s->state=SSL3_ST_CR_FINISHED_A;
287 /* Check if it is anon DH/ECDH */
288 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
290 ret=ssl3_get_server_certificate(s);
291 if (ret <= 0) goto end;
292 #ifndef OPENSSL_NO_TLSEXT
293 if (s->tlsext_status_expected)
294 s->state=SSL3_ST_CR_CERT_STATUS_A;
296 s->state=SSL3_ST_CR_KEY_EXCH_A;
301 s->state=SSL3_ST_CR_KEY_EXCH_A;
308 s->state=SSL3_ST_CR_KEY_EXCH_A;
313 case SSL3_ST_CR_KEY_EXCH_A:
314 case SSL3_ST_CR_KEY_EXCH_B:
315 ret=ssl3_get_key_exchange(s);
316 if (ret <= 0) goto end;
317 s->state=SSL3_ST_CR_CERT_REQ_A;
320 /* at this point we check that we have the
321 * required stuff from the server */
322 if (!ssl3_check_cert_and_algorithm(s))
329 case SSL3_ST_CR_CERT_REQ_A:
330 case SSL3_ST_CR_CERT_REQ_B:
331 ret=ssl3_get_certificate_request(s);
332 if (ret <= 0) goto end;
333 s->state=SSL3_ST_CR_SRVR_DONE_A;
337 case SSL3_ST_CR_SRVR_DONE_A:
338 case SSL3_ST_CR_SRVR_DONE_B:
339 ret=ssl3_get_server_done(s);
340 if (ret <= 0) goto end;
341 if (s->s3->tmp.cert_req)
342 s->state=SSL3_ST_CW_CERT_A;
344 s->state=SSL3_ST_CW_KEY_EXCH_A;
349 case SSL3_ST_CW_CERT_A:
350 case SSL3_ST_CW_CERT_B:
351 case SSL3_ST_CW_CERT_C:
352 case SSL3_ST_CW_CERT_D:
353 ret=ssl3_send_client_certificate(s);
354 if (ret <= 0) goto end;
355 s->state=SSL3_ST_CW_KEY_EXCH_A;
359 case SSL3_ST_CW_KEY_EXCH_A:
360 case SSL3_ST_CW_KEY_EXCH_B:
361 ret=ssl3_send_client_key_exchange(s);
362 if (ret <= 0) goto end;
363 /* EAY EAY EAY need to check for DH fix cert
365 /* For TLS, cert_req is set to 2, so a cert chain
366 * of nothing is sent, but no verify packet is sent */
367 /* XXX: For now, we do not support client
368 * authentication in ECDH cipher suites with
369 * ECDH (rather than ECDSA) certificates.
370 * We need to skip the certificate verify
371 * message when client's ECDH public key is sent
372 * inside the client certificate.
374 if (s->s3->tmp.cert_req == 1)
376 s->state=SSL3_ST_CW_CERT_VRFY_A;
380 s->state=SSL3_ST_CW_CHANGE_A;
381 s->s3->change_cipher_spec=0;
387 case SSL3_ST_CW_CERT_VRFY_A:
388 case SSL3_ST_CW_CERT_VRFY_B:
389 ret=ssl3_send_client_verify(s);
390 if (ret <= 0) goto end;
391 s->state=SSL3_ST_CW_CHANGE_A;
393 s->s3->change_cipher_spec=0;
396 case SSL3_ST_CW_CHANGE_A:
397 case SSL3_ST_CW_CHANGE_B:
398 ret=ssl3_send_change_cipher_spec(s,
399 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
400 if (ret <= 0) goto end;
401 s->state=SSL3_ST_CW_FINISHED_A;
404 s->session->cipher=s->s3->tmp.new_cipher;
405 #ifdef OPENSSL_NO_COMP
406 s->session->compress_meth=0;
408 if (s->s3->tmp.new_compression == NULL)
409 s->session->compress_meth=0;
411 s->session->compress_meth=
412 s->s3->tmp.new_compression->id;
414 if (!s->method->ssl3_enc->setup_key_block(s))
420 if (!s->method->ssl3_enc->change_cipher_state(s,
421 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
429 case SSL3_ST_CW_FINISHED_A:
430 case SSL3_ST_CW_FINISHED_B:
431 ret=ssl3_send_finished(s,
432 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
433 s->method->ssl3_enc->client_finished_label,
434 s->method->ssl3_enc->client_finished_label_len);
435 if (ret <= 0) goto end;
436 s->state=SSL3_ST_CW_FLUSH;
439 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
442 s->s3->tmp.next_state=SSL_ST_OK;
443 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
446 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
447 s->s3->delay_buf_pop_ret=0;
452 #ifndef OPENSSL_NO_TLSEXT
453 /* Allow NewSessionTicket if ticket expected */
454 if (s->tlsext_ticket_expected)
455 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
459 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
464 #ifndef OPENSSL_NO_TLSEXT
465 case SSL3_ST_CR_SESSION_TICKET_A:
466 case SSL3_ST_CR_SESSION_TICKET_B:
467 ret=ssl3_get_new_session_ticket(s);
468 if (ret <= 0) goto end;
469 s->state=SSL3_ST_CR_FINISHED_A;
473 case SSL3_ST_CR_CERT_STATUS_A:
474 case SSL3_ST_CR_CERT_STATUS_B:
475 ret=ssl3_get_cert_status(s);
476 if (ret <= 0) goto end;
477 s->state=SSL3_ST_CR_KEY_EXCH_A;
482 case SSL3_ST_CR_FINISHED_A:
483 case SSL3_ST_CR_FINISHED_B:
485 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
486 SSL3_ST_CR_FINISHED_B);
487 if (ret <= 0) goto end;
490 s->state=SSL3_ST_CW_CHANGE_A;
496 case SSL3_ST_CW_FLUSH:
497 s->rwstate=SSL_WRITING;
498 if (BIO_flush(s->wbio) <= 0)
503 s->rwstate=SSL_NOTHING;
504 s->state=s->s3->tmp.next_state;
508 /* clean a few things up */
509 ssl3_cleanup_key_block(s);
511 if (s->init_buf != NULL)
513 BUF_MEM_free(s->init_buf);
517 /* If we are not 'joining' the last two packets,
518 * remove the buffering now */
519 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
520 ssl_free_wbio_buffer(s);
521 /* else do it later in ssl3_write */
526 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
527 if (s->hit) s->ctx->stats.sess_hit++;
531 s->handshake_func=ssl3_connect;
532 s->ctx->stats.sess_connect_good++;
534 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
540 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
546 /* did we do anything */
547 if (!s->s3->tmp.reuse_message && !skip)
551 if ((ret=BIO_flush(s->wbio)) <= 0)
555 if ((cb != NULL) && (s->state != state))
559 cb(s,SSL_CB_CONNECT_LOOP,1);
570 cb(s,SSL_CB_CONNECT_EXIT,ret);
575 int ssl3_client_hello(SSL *s)
580 unsigned long Time,l;
581 #ifndef OPENSSL_NO_COMP
586 buf=(unsigned char *)s->init_buf->data;
587 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
589 SSL_SESSION *sess = s->session;
590 if ((sess == NULL) ||
591 (sess->ssl_version != s->version) ||
592 #ifdef OPENSSL_NO_TLSEXT
593 !sess->session_id_length ||
595 (!sess->session_id_length && !sess->tlsext_tick) ||
597 (sess->not_resumable))
599 if (!ssl_get_new_session(s,0))
602 /* else use the pre-loaded session */
604 p=s->s3->client_random;
605 Time=(unsigned long)time(NULL); /* Time */
607 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
610 /* Do the message type and length last */
613 *(p++)=s->version>>8;
614 *(p++)=s->version&0xff;
615 s->client_version=s->version;
618 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
625 i=s->session->session_id_length;
629 if (i > (int)sizeof(s->session->session_id))
631 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
634 memcpy(p,s->session->session_id,i);
638 /* Ciphers supported */
639 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
642 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
649 #ifdef OPENSSL_NO_COMP
652 if (s->ctx->comp_methods == NULL)
655 j=sk_SSL_COMP_num(s->ctx->comp_methods);
659 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
663 *(p++)=0; /* Add the NULL method */
664 #ifndef OPENSSL_NO_TLSEXT
665 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
667 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
673 *(d++)=SSL3_MT_CLIENT_HELLO;
676 s->state=SSL3_ST_CW_CLNT_HELLO_B;
677 /* number of bytes to write */
682 /* SSL3_ST_CW_CLNT_HELLO_B */
683 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
688 int ssl3_get_server_hello(SSL *s)
690 STACK_OF(SSL_CIPHER) *sk;
696 #ifndef OPENSSL_NO_COMP
700 n=s->method->ssl_get_message(s,
701 SSL3_ST_CR_SRVR_HELLO_A,
702 SSL3_ST_CR_SRVR_HELLO_B,
707 if (!ok) return((int)n);
709 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
711 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
713 if ( s->d1->send_cookie == 0)
715 s->s3->tmp.reuse_message = 1;
718 else /* already sent a cookie */
720 al=SSL_AD_UNEXPECTED_MESSAGE;
721 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
727 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
729 al=SSL_AD_UNEXPECTED_MESSAGE;
730 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
734 d=p=(unsigned char *)s->init_msg;
736 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
738 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
739 s->version=(s->version&0xff00)|p[1];
740 al=SSL_AD_PROTOCOL_VERSION;
745 /* load the server hello data */
746 /* load the server random */
747 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
750 /* get the session-id */
753 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
755 al=SSL_AD_ILLEGAL_PARAMETER;
756 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
760 if (j != 0 && j == s->session->session_id_length
761 && memcmp(p,s->session->session_id,j) == 0)
763 if(s->sid_ctx_length != s->session->sid_ctx_length
764 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
766 /* actually a client application bug */
767 al=SSL_AD_ILLEGAL_PARAMETER;
768 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
773 else /* a miss or crap from the other end */
775 /* If we were trying for session-id reuse, make a new
776 * SSL_SESSION so we don't stuff up other people */
778 if (s->session->session_id_length > 0)
780 if (!ssl_get_new_session(s,0))
782 al=SSL_AD_INTERNAL_ERROR;
786 s->session->session_id_length=j;
787 memcpy(s->session->session_id,p,j); /* j could be 0 */
790 c=ssl_get_cipher_by_char(s,p);
794 al=SSL_AD_ILLEGAL_PARAMETER;
795 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
798 p+=ssl_put_cipher_by_char(s,NULL,NULL);
800 sk=ssl_get_ciphers_by_id(s);
801 i=sk_SSL_CIPHER_find(sk,c);
804 /* we did not say we would use this cipher */
805 al=SSL_AD_ILLEGAL_PARAMETER;
806 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
810 /* Depending on the session caching (internal/external), the cipher
811 and/or cipher_id values may not be set. Make sure that
812 cipher_id is set and use it for comparison. */
813 if (s->session->cipher)
814 s->session->cipher_id = s->session->cipher->id;
815 if (s->hit && (s->session->cipher_id != c->id))
817 /* Workaround is now obsolete */
820 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
823 al=SSL_AD_ILLEGAL_PARAMETER;
824 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
828 s->s3->tmp.new_cipher=c;
830 /* lets get the compression algorithm */
832 #ifdef OPENSSL_NO_COMP
835 al=SSL_AD_ILLEGAL_PARAMETER;
836 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
844 comp=ssl3_comp_find(s->ctx->comp_methods,j);
846 if ((j != 0) && (comp == NULL))
848 al=SSL_AD_ILLEGAL_PARAMETER;
849 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
854 s->s3->tmp.new_compression=comp;
857 #ifndef OPENSSL_NO_TLSEXT
859 if (s->version >= SSL3_VERSION)
861 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
863 /* 'al' set by ssl_parse_serverhello_tlsext */
864 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
867 if (ssl_check_serverhello_tlsext(s) <= 0)
869 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
878 /* wrong packet length */
879 al=SSL_AD_DECODE_ERROR;
880 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
886 ssl3_send_alert(s,SSL3_AL_FATAL,al);
891 int ssl3_get_server_certificate(SSL *s)
894 unsigned long n,nc,llen,l;
896 const unsigned char *q,*p;
898 STACK_OF(X509) *sk=NULL;
901 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
903 n=s->method->ssl_get_message(s,
910 if (!ok) return((int)n);
912 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
913 ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) &&
914 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
916 s->s3->tmp.reuse_message=1;
920 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
922 al=SSL_AD_UNEXPECTED_MESSAGE;
923 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
926 p=d=(unsigned char *)s->init_msg;
928 if ((sk=sk_X509_new_null()) == NULL)
930 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
937 al=SSL_AD_DECODE_ERROR;
938 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
941 for (nc=0; nc<llen; )
946 al=SSL_AD_DECODE_ERROR;
947 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
952 x=d2i_X509(NULL,&q,l);
955 al=SSL_AD_BAD_CERTIFICATE;
956 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
961 al=SSL_AD_DECODE_ERROR;
962 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
965 if (!sk_X509_push(sk,x))
967 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
975 i=ssl_verify_cert_chain(s,sk);
976 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
977 #ifndef OPENSSL_NO_KRB5
978 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
979 != (SSL_aKRB5|SSL_kKRB5)
980 #endif /* OPENSSL_NO_KRB5 */
983 al=ssl_verify_alarm_type(s->verify_result);
984 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
987 ERR_clear_error(); /* but we keep s->verify_result */
989 sc=ssl_sess_cert_new();
990 if (sc == NULL) goto err;
992 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
993 s->session->sess_cert=sc;
996 /* Inconsistency alert: cert_chain does include the peer's
997 * certificate, which we don't include in s3_srvr.c */
998 x=sk_X509_value(sk,0);
1000 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1002 pkey=X509_get_pubkey(x);
1004 /* VRS: allow null cert if auth == KRB5 */
1005 need_cert = ((s->s3->tmp.new_cipher->algorithms
1006 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
1007 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
1010 printf("pkey,x = %p, %p\n", (void *)pkey,(void *)x);
1011 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1012 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
1013 s->s3->tmp.new_cipher->algorithms, need_cert);
1014 #endif /* KSSL_DEBUG */
1016 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1020 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1021 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1025 i=ssl_cert_type(x,pkey);
1026 if (need_cert && i < 0)
1030 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1031 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1037 sc->peer_cert_type=i;
1038 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1039 /* Why would the following ever happen?
1040 * We just created sc a couple of lines ago. */
1041 if (sc->peer_pkeys[i].x509 != NULL)
1042 X509_free(sc->peer_pkeys[i].x509);
1043 sc->peer_pkeys[i].x509=x;
1044 sc->peer_key= &(sc->peer_pkeys[i]);
1046 if (s->session->peer != NULL)
1047 X509_free(s->session->peer);
1048 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1053 sc->peer_cert_type=i;
1056 if (s->session->peer != NULL)
1057 X509_free(s->session->peer);
1058 s->session->peer=NULL;
1060 s->session->verify_result = s->verify_result;
1068 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1071 EVP_PKEY_free(pkey);
1073 sk_X509_pop_free(sk,X509_free);
1077 int ssl3_get_key_exchange(SSL *s)
1079 #ifndef OPENSSL_NO_RSA
1080 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1083 unsigned char *param,*p;
1084 int al,i,j,param_len,ok;
1086 EVP_PKEY *pkey=NULL;
1087 #ifndef OPENSSL_NO_RSA
1090 #ifndef OPENSSL_NO_DH
1093 #ifndef OPENSSL_NO_ECDH
1094 EC_KEY *ecdh = NULL;
1095 BN_CTX *bn_ctx = NULL;
1096 EC_POINT *srvr_ecpoint = NULL;
1098 int encoded_pt_len = 0;
1101 /* use same message size as in ssl3_get_certificate_request()
1102 * as ServerKeyExchange message may be skipped */
1103 n=s->method->ssl_get_message(s,
1104 SSL3_ST_CR_KEY_EXCH_A,
1105 SSL3_ST_CR_KEY_EXCH_B,
1110 if (!ok) return((int)n);
1112 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1114 s->s3->tmp.reuse_message=1;
1118 param=p=(unsigned char *)s->init_msg;
1120 if (s->session->sess_cert != NULL)
1122 #ifndef OPENSSL_NO_RSA
1123 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1125 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1126 s->session->sess_cert->peer_rsa_tmp=NULL;
1129 #ifndef OPENSSL_NO_DH
1130 if (s->session->sess_cert->peer_dh_tmp)
1132 DH_free(s->session->sess_cert->peer_dh_tmp);
1133 s->session->sess_cert->peer_dh_tmp=NULL;
1136 #ifndef OPENSSL_NO_ECDH
1137 if (s->session->sess_cert->peer_ecdh_tmp)
1139 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1140 s->session->sess_cert->peer_ecdh_tmp=NULL;
1146 s->session->sess_cert=ssl_sess_cert_new();
1150 alg=s->s3->tmp.new_cipher->algorithms;
1151 EVP_MD_CTX_init(&md_ctx);
1153 #ifndef OPENSSL_NO_RSA
1156 if ((rsa=RSA_new()) == NULL)
1158 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1165 al=SSL_AD_DECODE_ERROR;
1166 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1169 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1171 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1180 al=SSL_AD_DECODE_ERROR;
1181 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1184 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1186 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1192 /* this should be because we are using an export cipher */
1194 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1197 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1200 s->session->sess_cert->peer_rsa_tmp=rsa;
1203 #else /* OPENSSL_NO_RSA */
1207 #ifndef OPENSSL_NO_DH
1208 else if (alg & SSL_kEDH)
1210 if ((dh=DH_new()) == NULL)
1212 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1219 al=SSL_AD_DECODE_ERROR;
1220 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1223 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1225 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1234 al=SSL_AD_DECODE_ERROR;
1235 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1238 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1240 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1249 al=SSL_AD_DECODE_ERROR;
1250 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1253 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1255 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1261 #ifndef OPENSSL_NO_RSA
1263 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1268 #ifndef OPENSSL_NO_DSA
1269 else if (alg & SSL_aDSS)
1270 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1272 /* else anonymous DH, so no certificate or pkey. */
1274 s->session->sess_cert->peer_dh_tmp=dh;
1277 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1279 al=SSL_AD_ILLEGAL_PARAMETER;
1280 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1283 #endif /* !OPENSSL_NO_DH */
1285 #ifndef OPENSSL_NO_ECDH
1286 else if (alg & SSL_kECDHE)
1289 const EC_GROUP *group;
1291 if ((ecdh=EC_KEY_new()) == NULL)
1293 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1297 /* Extract elliptic curve parameters and the
1298 * server's ephemeral ECDH public key.
1299 * Keep accumulating lengths of various components in
1300 * param_len and make sure it never exceeds n.
1303 /* XXX: For now we only support named (not generic) curves
1304 * and the ECParameters in this case is just three bytes.
1307 if ((param_len > n) ||
1308 (*p != NAMED_CURVE_TYPE) ||
1309 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1311 al=SSL_AD_INTERNAL_ERROR;
1312 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1316 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1319 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1322 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1324 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1327 EC_GROUP_free(ngroup);
1329 group = EC_KEY_get0_group(ecdh);
1331 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1332 (EC_GROUP_get_degree(group) > 163))
1334 al=SSL_AD_EXPORT_RESTRICTION;
1335 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1341 /* Next, get the encoded ECPoint */
1342 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1343 ((bn_ctx = BN_CTX_new()) == NULL))
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1349 encoded_pt_len = *p; /* length of encoded point */
1351 param_len += (1 + encoded_pt_len);
1352 if ((param_len > n) ||
1353 (EC_POINT_oct2point(group, srvr_ecpoint,
1354 p, encoded_pt_len, bn_ctx) == 0))
1356 al=SSL_AD_DECODE_ERROR;
1357 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1364 /* The ECC/TLS specification does not mention
1365 * the use of DSA to sign ECParameters in the server
1366 * key exchange message. We do support RSA and ECDSA.
1369 #ifndef OPENSSL_NO_RSA
1370 else if (alg & SSL_aRSA)
1371 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1373 #ifndef OPENSSL_NO_ECDSA
1374 else if (alg & SSL_aECDSA)
1375 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1377 /* else anonymous ECDH, so no certificate or pkey. */
1378 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1379 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1381 BN_CTX_free(bn_ctx);
1383 EC_POINT_free(srvr_ecpoint);
1384 srvr_ecpoint = NULL;
1386 else if (alg & SSL_kECDH)
1388 al=SSL_AD_UNEXPECTED_MESSAGE;
1389 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1392 #endif /* !OPENSSL_NO_ECDH */
1395 al=SSL_AD_HANDSHAKE_FAILURE;
1396 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1401 /* p points to the next byte, there are 'n' bytes left */
1403 /* if it was signed, check the signature */
1408 j=EVP_PKEY_size(pkey);
1410 if ((i != n) || (n > j) || (n <= 0))
1412 /* wrong packet length */
1413 al=SSL_AD_DECODE_ERROR;
1414 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1418 #ifndef OPENSSL_NO_RSA
1419 if (pkey->type == EVP_PKEY_RSA)
1425 for (num=2; num > 0; num--)
1427 EVP_MD_CTX_set_flags(&md_ctx,
1428 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1429 EVP_DigestInit_ex(&md_ctx,(num == 2)
1430 ?s->ctx->md5:s->ctx->sha1, NULL);
1431 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1432 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1433 EVP_DigestUpdate(&md_ctx,param,param_len);
1434 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1438 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1442 al=SSL_AD_DECRYPT_ERROR;
1443 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1449 al=SSL_AD_DECRYPT_ERROR;
1450 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1456 #ifndef OPENSSL_NO_DSA
1457 if (pkey->type == EVP_PKEY_DSA)
1460 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1461 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1462 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1463 EVP_VerifyUpdate(&md_ctx,param,param_len);
1464 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1467 al=SSL_AD_DECRYPT_ERROR;
1468 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1474 #ifndef OPENSSL_NO_ECDSA
1475 if (pkey->type == EVP_PKEY_EC)
1477 /* let's do ECDSA */
1478 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1479 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1480 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1481 EVP_VerifyUpdate(&md_ctx,param,param_len);
1482 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1485 al=SSL_AD_DECRYPT_ERROR;
1486 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1493 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1499 /* still data left over */
1500 if (!(alg & SSL_aNULL))
1502 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1507 al=SSL_AD_DECODE_ERROR;
1508 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1512 EVP_PKEY_free(pkey);
1513 EVP_MD_CTX_cleanup(&md_ctx);
1516 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1518 EVP_PKEY_free(pkey);
1519 #ifndef OPENSSL_NO_RSA
1523 #ifndef OPENSSL_NO_DH
1527 #ifndef OPENSSL_NO_ECDH
1528 BN_CTX_free(bn_ctx);
1529 EC_POINT_free(srvr_ecpoint);
1533 EVP_MD_CTX_cleanup(&md_ctx);
1537 int ssl3_get_certificate_request(SSL *s)
1540 unsigned long n,nc,l;
1541 unsigned int llen,ctype_num,i;
1543 const unsigned char *p,*q;
1545 STACK_OF(X509_NAME) *ca_sk=NULL;
1547 n=s->method->ssl_get_message(s,
1548 SSL3_ST_CR_CERT_REQ_A,
1549 SSL3_ST_CR_CERT_REQ_B,
1554 if (!ok) return((int)n);
1556 s->s3->tmp.cert_req=0;
1558 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1560 s->s3->tmp.reuse_message=1;
1564 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1566 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1567 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1571 /* TLS does not like anon-DH with client cert */
1572 if (s->version > SSL3_VERSION)
1574 l=s->s3->tmp.new_cipher->algorithms;
1577 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1578 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1583 p=d=(unsigned char *)s->init_msg;
1585 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1587 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1591 /* get the certificate types */
1593 if (ctype_num > SSL3_CT_NUMBER)
1594 ctype_num=SSL3_CT_NUMBER;
1595 for (i=0; i<ctype_num; i++)
1596 s->s3->tmp.ctype[i]= p[i];
1599 /* get the CA RDNs */
1604 out=fopen("/tmp/vsign.der","w");
1605 fwrite(p,1,llen,out);
1610 if ((llen+ctype_num+2+1) != n)
1612 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1613 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1617 for (nc=0; nc<llen; )
1620 if ((l+nc+2) > llen)
1622 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1623 goto cont; /* netscape bugs */
1624 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1625 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1631 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1633 /* If netscape tolerance is on, ignore errors */
1634 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1638 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1639 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1646 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1647 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1650 if (!sk_X509_NAME_push(ca_sk,xn))
1652 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1666 /* we should setup a certificate to return.... */
1667 s->s3->tmp.cert_req=1;
1668 s->s3->tmp.ctype_num=ctype_num;
1669 if (s->s3->tmp.ca_names != NULL)
1670 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1671 s->s3->tmp.ca_names=ca_sk;
1676 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1680 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1682 return(X509_NAME_cmp(*a,*b));
1684 #ifndef OPENSSL_NO_TLSEXT
1685 int ssl3_get_new_session_ticket(SSL *s)
1687 int ok,al,ret=0, ticklen;
1689 const unsigned char *p;
1692 n=s->method->ssl_get_message(s,
1693 SSL3_ST_CR_SESSION_TICKET_A,
1694 SSL3_ST_CR_SESSION_TICKET_B,
1702 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1704 s->s3->tmp.reuse_message=1;
1707 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1709 al=SSL_AD_UNEXPECTED_MESSAGE;
1710 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1715 /* need at least ticket_lifetime_hint + ticket length */
1716 al = SSL_AD_DECODE_ERROR;
1717 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1721 p=d=(unsigned char *)s->init_msg;
1722 n2l(p, s->session->tlsext_tick_lifetime_hint);
1724 /* ticket_lifetime_hint + ticket_length + ticket */
1725 if (ticklen + 6 != n)
1727 al = SSL_AD_DECODE_ERROR;
1728 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1731 if (s->session->tlsext_tick)
1733 OPENSSL_free(s->session->tlsext_tick);
1734 s->session->tlsext_ticklen = 0;
1736 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1737 if (!s->session->tlsext_tick)
1739 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1742 memcpy(s->session->tlsext_tick, p, ticklen);
1743 s->session->tlsext_ticklen = ticklen;
1744 /* There are two ways to detect a resumed ticket sesion.
1745 * One is to set an appropriate session ID and then the server
1746 * must return a match in ServerHello. This allows the normal
1747 * client session ID matching to work and we know much
1748 * earlier that the ticket has been accepted.
1750 * The other way is to set zero length session ID when the
1751 * ticket is presented and rely on the handshake to determine
1752 * session resumption.
1754 * We choose the former approach because this fits in with
1755 * assumptions elsewhere in OpenSSL. The session ID is set
1756 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1759 EVP_Digest(p, ticklen,
1760 s->session->session_id, &s->session->session_id_length,
1761 #ifndef OPENSSL_NO_SHA256
1762 EVP_sha256(), NULL);
1769 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1774 int ssl3_get_cert_status(SSL *s)
1777 unsigned long resplen;
1779 const unsigned char *p;
1781 n=s->method->ssl_get_message(s,
1782 SSL3_ST_CR_CERT_STATUS_A,
1783 SSL3_ST_CR_CERT_STATUS_B,
1784 SSL3_MT_CERTIFICATE_STATUS,
1788 if (!ok) return((int)n);
1791 /* need at least status type + length */
1792 al = SSL_AD_DECODE_ERROR;
1793 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1796 p = (unsigned char *)s->init_msg;
1797 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1799 al = SSL_AD_DECODE_ERROR;
1800 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1804 if (resplen + 4 != (unsigned long)n)
1806 al = SSL_AD_DECODE_ERROR;
1807 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1810 if (s->tlsext_ocsp_resp)
1811 OPENSSL_free(s->tlsext_ocsp_resp);
1812 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1813 if (!s->tlsext_ocsp_resp)
1815 al = SSL_AD_INTERNAL_ERROR;
1816 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1819 s->tlsext_ocsp_resplen = resplen;
1820 if (s->ctx->tlsext_status_cb)
1823 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1826 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1827 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1832 al = SSL_AD_INTERNAL_ERROR;
1833 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1839 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1844 int ssl3_get_server_done(SSL *s)
1849 n=s->method->ssl_get_message(s,
1850 SSL3_ST_CR_SRVR_DONE_A,
1851 SSL3_ST_CR_SRVR_DONE_B,
1852 SSL3_MT_SERVER_DONE,
1853 30, /* should be very small, like 0 :-) */
1856 if (!ok) return((int)n);
1859 /* should contain no data */
1860 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1861 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1869 int ssl3_send_client_key_exchange(SSL *s)
1871 unsigned char *p,*d;
1874 #ifndef OPENSSL_NO_RSA
1876 EVP_PKEY *pkey=NULL;
1878 #ifndef OPENSSL_NO_KRB5
1880 #endif /* OPENSSL_NO_KRB5 */
1881 #ifndef OPENSSL_NO_ECDH
1882 EC_KEY *clnt_ecdh = NULL;
1883 const EC_POINT *srvr_ecpoint = NULL;
1884 EVP_PKEY *srvr_pub_pkey = NULL;
1885 unsigned char *encodedPoint = NULL;
1886 int encoded_pt_len = 0;
1887 BN_CTX * bn_ctx = NULL;
1890 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1892 d=(unsigned char *)s->init_buf->data;
1895 l=s->s3->tmp.new_cipher->algorithms;
1897 /* Fool emacs indentation */
1899 #ifndef OPENSSL_NO_RSA
1900 else if (l & SSL_kRSA)
1903 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1905 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1906 rsa=s->session->sess_cert->peer_rsa_tmp;
1909 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1910 if ((pkey == NULL) ||
1911 (pkey->type != EVP_PKEY_RSA) ||
1912 (pkey->pkey.rsa == NULL))
1914 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1918 EVP_PKEY_free(pkey);
1921 tmp_buf[0]=s->client_version>>8;
1922 tmp_buf[1]=s->client_version&0xff;
1923 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1926 s->session->master_key_length=sizeof tmp_buf;
1929 /* Fix buf for TLS and beyond */
1930 if (s->version > SSL3_VERSION)
1932 n=RSA_public_encrypt(sizeof tmp_buf,
1933 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1935 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1936 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1940 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1944 /* Fix buf for TLS and beyond */
1945 if (s->version > SSL3_VERSION)
1951 s->session->master_key_length=
1952 s->method->ssl3_enc->generate_master_secret(s,
1953 s->session->master_key,
1954 tmp_buf,sizeof tmp_buf);
1955 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1958 #ifndef OPENSSL_NO_KRB5
1959 else if (l & SSL_kKRB5)
1961 krb5_error_code krb5rc;
1962 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1963 /* krb5_data krb5_ap_req; */
1964 krb5_data *enc_ticket;
1965 krb5_data authenticator, *authp = NULL;
1966 EVP_CIPHER_CTX ciph_ctx;
1967 EVP_CIPHER *enc = NULL;
1968 unsigned char iv[EVP_MAX_IV_LENGTH];
1969 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1970 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1971 + EVP_MAX_IV_LENGTH];
1972 int padl, outl = sizeof(epms);
1974 EVP_CIPHER_CTX_init(&ciph_ctx);
1977 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1979 #endif /* KSSL_DEBUG */
1983 if (KRB5SENDAUTH) authp = &authenticator;
1984 #endif /* KRB5SENDAUTH */
1986 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1988 enc = kssl_map_enc(kssl_ctx->enctype);
1993 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1994 if (krb5rc && kssl_err.text)
1995 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1997 #endif /* KSSL_DEBUG */
2001 ssl3_send_alert(s,SSL3_AL_FATAL,
2002 SSL_AD_HANDSHAKE_FAILURE);
2003 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2008 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2009 ** in place of RFC 2712 KerberosWrapper, as in:
2011 ** Send ticket (copy to *p, set n = length)
2012 ** n = krb5_ap_req.length;
2013 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2014 ** if (krb5_ap_req.data)
2015 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2017 ** Now using real RFC 2712 KerberosWrapper
2018 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2019 ** Note: 2712 "opaque" types are here replaced
2020 ** with a 2-byte length followed by the value.
2022 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2023 ** Where "xx xx" = length bytes. Shown here with
2024 ** optional authenticator omitted.
2027 /* KerberosWrapper.Ticket */
2028 s2n(enc_ticket->length,p);
2029 memcpy(p, enc_ticket->data, enc_ticket->length);
2030 p+= enc_ticket->length;
2031 n = enc_ticket->length + 2;
2033 /* KerberosWrapper.Authenticator */
2034 if (authp && authp->length)
2036 s2n(authp->length,p);
2037 memcpy(p, authp->data, authp->length);
2039 n+= authp->length + 2;
2047 s2n(0,p);/* null authenticator length */
2051 tmp_buf[0]=s->client_version>>8;
2052 tmp_buf[1]=s->client_version&0xff;
2053 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2056 /* 20010420 VRS. Tried it this way; failed.
2057 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2058 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2059 ** kssl_ctx->length);
2060 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2063 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2064 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2066 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2068 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2070 if (outl > sizeof epms)
2072 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2075 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2077 /* KerberosWrapper.EncryptedPreMasterSecret */
2079 memcpy(p, epms, outl);
2083 s->session->master_key_length=
2084 s->method->ssl3_enc->generate_master_secret(s,
2085 s->session->master_key,
2086 tmp_buf, sizeof tmp_buf);
2088 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2089 OPENSSL_cleanse(epms, outl);
2092 #ifndef OPENSSL_NO_DH
2093 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2095 DH *dh_srvr,*dh_clnt;
2097 if (s->session->sess_cert == NULL)
2099 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2100 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2104 if (s->session->sess_cert->peer_dh_tmp != NULL)
2105 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2108 /* we get them from the cert */
2109 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2110 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2114 /* generate a new random key */
2115 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2117 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2120 if (!DH_generate_key(dh_clnt))
2122 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2126 /* use the 'p' output buffer for the DH key, but
2127 * make sure to clear it out afterwards */
2129 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2133 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2137 /* generate master key from the result */
2138 s->session->master_key_length=
2139 s->method->ssl3_enc->generate_master_secret(s,
2140 s->session->master_key,p,n);
2144 /* send off the data */
2145 n=BN_num_bytes(dh_clnt->pub_key);
2147 BN_bn2bin(dh_clnt->pub_key,p);
2152 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2156 #ifndef OPENSSL_NO_ECDH
2157 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2159 const EC_GROUP *srvr_group = NULL;
2161 int ecdh_clnt_cert = 0;
2164 /* Did we send out the client's
2165 * ECDH share for use in premaster
2166 * computation as part of client certificate?
2167 * If so, set ecdh_clnt_cert to 1.
2169 if ((l & SSL_kECDH) && (s->cert != NULL))
2171 /* XXX: For now, we do not support client
2172 * authentication using ECDH certificates.
2173 * To add such support, one needs to add
2174 * code that checks for appropriate
2175 * conditions and sets ecdh_clnt_cert to 1.
2176 * For example, the cert have an ECC
2177 * key on the same curve as the server's
2178 * and the key should be authorized for
2181 * One also needs to add code in ssl3_connect
2182 * to skip sending the certificate verify
2185 * if ((s->cert->key->privatekey != NULL) &&
2186 * (s->cert->key->privatekey->type ==
2187 * EVP_PKEY_EC) && ...)
2188 * ecdh_clnt_cert = 1;
2192 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2194 tkey = s->session->sess_cert->peer_ecdh_tmp;
2198 /* Get the Server Public Key from Cert */
2199 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2200 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2201 if ((srvr_pub_pkey == NULL) ||
2202 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2203 (srvr_pub_pkey->pkey.ec == NULL))
2205 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2206 ERR_R_INTERNAL_ERROR);
2210 tkey = srvr_pub_pkey->pkey.ec;
2213 srvr_group = EC_KEY_get0_group(tkey);
2214 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2216 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2218 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2219 ERR_R_INTERNAL_ERROR);
2223 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2225 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2229 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2231 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2236 /* Reuse key info from our certificate
2237 * We only need our private key to perform
2238 * the ECDH computation.
2240 const BIGNUM *priv_key;
2241 tkey = s->cert->key->privatekey->pkey.ec;
2242 priv_key = EC_KEY_get0_private_key(tkey);
2243 if (priv_key == NULL)
2245 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2248 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2250 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2256 /* Generate a new ECDH key pair */
2257 if (!(EC_KEY_generate_key(clnt_ecdh)))
2259 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2264 /* use the 'p' output buffer for the ECDH key, but
2265 * make sure to clear it out afterwards
2268 field_size = EC_GROUP_get_degree(srvr_group);
2269 if (field_size <= 0)
2271 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2275 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2278 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2283 /* generate master key from the result */
2284 s->session->master_key_length = s->method->ssl3_enc \
2285 -> generate_master_secret(s,
2286 s->session->master_key,
2289 memset(p, 0, n); /* clean up */
2293 /* Send empty client key exch message */
2298 /* First check the size of encoding and
2299 * allocate memory accordingly.
2302 EC_POINT_point2oct(srvr_group,
2303 EC_KEY_get0_public_key(clnt_ecdh),
2304 POINT_CONVERSION_UNCOMPRESSED,
2307 encodedPoint = (unsigned char *)
2308 OPENSSL_malloc(encoded_pt_len *
2309 sizeof(unsigned char));
2310 bn_ctx = BN_CTX_new();
2311 if ((encodedPoint == NULL) ||
2314 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2318 /* Encode the public key */
2319 n = EC_POINT_point2oct(srvr_group,
2320 EC_KEY_get0_public_key(clnt_ecdh),
2321 POINT_CONVERSION_UNCOMPRESSED,
2322 encodedPoint, encoded_pt_len, bn_ctx);
2324 *p = n; /* length of encoded point */
2325 /* Encoded point will be copied here */
2327 /* copy the point */
2328 memcpy((unsigned char *)p, encodedPoint, n);
2329 /* increment n to account for length field */
2333 /* Free allocated memory */
2334 BN_CTX_free(bn_ctx);
2335 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2336 if (clnt_ecdh != NULL)
2337 EC_KEY_free(clnt_ecdh);
2338 EVP_PKEY_free(srvr_pub_pkey);
2340 #endif /* !OPENSSL_NO_ECDH */
2343 ssl3_send_alert(s, SSL3_AL_FATAL,
2344 SSL_AD_HANDSHAKE_FAILURE);
2345 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2346 ERR_R_INTERNAL_ERROR);
2350 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2353 s->state=SSL3_ST_CW_KEY_EXCH_B;
2354 /* number of bytes to write */
2359 /* SSL3_ST_CW_KEY_EXCH_B */
2360 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2362 #ifndef OPENSSL_NO_ECDH
2363 BN_CTX_free(bn_ctx);
2364 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2365 if (clnt_ecdh != NULL)
2366 EC_KEY_free(clnt_ecdh);
2367 EVP_PKEY_free(srvr_pub_pkey);
2372 int ssl3_send_client_verify(SSL *s)
2374 unsigned char *p,*d;
2375 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2377 #ifndef OPENSSL_NO_RSA
2381 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2385 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2387 d=(unsigned char *)s->init_buf->data;
2389 pkey=s->cert->key->privatekey;
2391 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2392 &(data[MD5_DIGEST_LENGTH]));
2394 #ifndef OPENSSL_NO_RSA
2395 if (pkey->type == EVP_PKEY_RSA)
2397 s->method->ssl3_enc->cert_verify_mac(s,
2398 &(s->s3->finish_dgst1),&(data[0]));
2399 if (RSA_sign(NID_md5_sha1, data,
2400 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2401 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2403 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2411 #ifndef OPENSSL_NO_DSA
2412 if (pkey->type == EVP_PKEY_DSA)
2414 if (!DSA_sign(pkey->save_type,
2415 &(data[MD5_DIGEST_LENGTH]),
2416 SHA_DIGEST_LENGTH,&(p[2]),
2417 (unsigned int *)&j,pkey->pkey.dsa))
2419 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2427 #ifndef OPENSSL_NO_ECDSA
2428 if (pkey->type == EVP_PKEY_EC)
2430 if (!ECDSA_sign(pkey->save_type,
2431 &(data[MD5_DIGEST_LENGTH]),
2432 SHA_DIGEST_LENGTH,&(p[2]),
2433 (unsigned int *)&j,pkey->pkey.ec))
2435 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2445 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2448 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2451 s->state=SSL3_ST_CW_CERT_VRFY_B;
2452 s->init_num=(int)n+4;
2455 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2460 int ssl3_send_client_certificate(SSL *s)
2463 EVP_PKEY *pkey=NULL;
2467 if (s->state == SSL3_ST_CW_CERT_A)
2469 if ((s->cert == NULL) ||
2470 (s->cert->key->x509 == NULL) ||
2471 (s->cert->key->privatekey == NULL))
2472 s->state=SSL3_ST_CW_CERT_B;
2474 s->state=SSL3_ST_CW_CERT_C;
2477 /* We need to get a client cert */
2478 if (s->state == SSL3_ST_CW_CERT_B)
2480 /* If we get an error, we need to
2481 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2482 * We then get retied later */
2484 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2487 s->rwstate=SSL_X509_LOOKUP;
2490 s->rwstate=SSL_NOTHING;
2491 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2493 s->state=SSL3_ST_CW_CERT_B;
2494 if ( !SSL_use_certificate(s,x509) ||
2495 !SSL_use_PrivateKey(s,pkey))
2501 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2504 if (x509 != NULL) X509_free(x509);
2505 if (pkey != NULL) EVP_PKEY_free(pkey);
2508 if (s->version == SSL3_VERSION)
2510 s->s3->tmp.cert_req=0;
2511 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2516 s->s3->tmp.cert_req=2;
2520 /* Ok, we have a cert */
2521 s->state=SSL3_ST_CW_CERT_C;
2524 if (s->state == SSL3_ST_CW_CERT_C)
2526 s->state=SSL3_ST_CW_CERT_D;
2527 l=ssl3_output_cert_chain(s,
2528 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2532 /* SSL3_ST_CW_CERT_D */
2533 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2536 #define has_bits(i,m) (((i)&(m)) == (m))
2538 int ssl3_check_cert_and_algorithm(SSL *s)
2542 EVP_PKEY *pkey=NULL;
2544 #ifndef OPENSSL_NO_RSA
2547 #ifndef OPENSSL_NO_DH
2551 sc=s->session->sess_cert;
2553 algs=s->s3->tmp.new_cipher->algorithms;
2555 /* we don't have a certificate */
2556 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2561 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2565 #ifndef OPENSSL_NO_RSA
2566 rsa=s->session->sess_cert->peer_rsa_tmp;
2568 #ifndef OPENSSL_NO_DH
2569 dh=s->session->sess_cert->peer_dh_tmp;
2572 /* This is the passed certificate */
2574 idx=sc->peer_cert_type;
2575 #ifndef OPENSSL_NO_ECDH
2576 if (idx == SSL_PKEY_ECC)
2578 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2579 s->s3->tmp.new_cipher) == 0)
2580 { /* check failed */
2581 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2590 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2591 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2592 EVP_PKEY_free(pkey);
2595 /* Check that we have a certificate if we require one */
2596 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2598 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2601 #ifndef OPENSSL_NO_DSA
2602 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2604 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2608 #ifndef OPENSSL_NO_RSA
2609 if ((algs & SSL_kRSA) &&
2610 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2612 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2616 #ifndef OPENSSL_NO_DH
2617 if ((algs & SSL_kEDH) &&
2618 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2620 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2623 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2625 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2628 #ifndef OPENSSL_NO_DSA
2629 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2631 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2637 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2639 #ifndef OPENSSL_NO_RSA
2640 if (algs & SSL_kRSA)
2643 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2645 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2651 #ifndef OPENSSL_NO_DH
2652 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2655 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2657 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2664 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2670 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2676 #ifndef OPENSSL_NO_ECDH
2677 /* This is the complement of nid2curve_id in s3_srvr.c. */
2678 static int curve_id2nid(int curve_id)
2680 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2681 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2682 static int nid_list[26] =
2685 NID_sect163k1, /* sect163k1 (1) */
2686 NID_sect163r1, /* sect163r1 (2) */
2687 NID_sect163r2, /* sect163r2 (3) */
2688 NID_sect193r1, /* sect193r1 (4) */
2689 NID_sect193r2, /* sect193r2 (5) */
2690 NID_sect233k1, /* sect233k1 (6) */
2691 NID_sect233r1, /* sect233r1 (7) */
2692 NID_sect239k1, /* sect239k1 (8) */
2693 NID_sect283k1, /* sect283k1 (9) */
2694 NID_sect283r1, /* sect283r1 (10) */
2695 NID_sect409k1, /* sect409k1 (11) */
2696 NID_sect409r1, /* sect409r1 (12) */
2697 NID_sect571k1, /* sect571k1 (13) */
2698 NID_sect571r1, /* sect571r1 (14) */
2699 NID_secp160k1, /* secp160k1 (15) */
2700 NID_secp160r1, /* secp160r1 (16) */
2701 NID_secp160r2, /* secp160r2 (17) */
2702 NID_secp192k1, /* secp192k1 (18) */
2703 NID_X9_62_prime192v1, /* secp192r1 (19) */
2704 NID_secp224k1, /* secp224k1 (20) */
2705 NID_secp224r1, /* secp224r1 (21) */
2706 NID_secp256k1, /* secp256k1 (22) */
2707 NID_X9_62_prime256v1, /* secp256r1 (23) */
2708 NID_secp384r1, /* secp384r1 (24) */
2709 NID_secp521r1 /* secp521r1 (25) */
2712 if ((curve_id < 1) || (curve_id > 25)) return 0;
2714 return nid_list[curve_id];
2718 /* Check to see if handshake is full or resumed. Usually this is just a
2719 * case of checking to see if a cache hit has occurred. In the case of
2720 * session tickets we have to check the next message to be sure.
2723 #ifndef OPENSSL_NO_TLSEXT
2724 int ssl3_check_finished(SSL *s)
2728 /* If we have no ticket or session ID is non-zero length (a match of
2729 * a non-zero session length would never reach here) it cannot be a
2732 if (!s->session->tlsext_tick || s->session->session_id_length)
2734 /* this function is called when we really expect a Certificate
2735 * message, so permit appropriate message length */
2736 n=s->method->ssl_get_message(s,
2742 if (!ok) return((int)n);
2743 s->s3->tmp.reuse_message = 1;
2744 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2745 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2752 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2755 #ifndef OPENSSL_NO_ENGINE
2756 if (s->ctx->client_cert_engine)
2758 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2759 SSL_get_client_CA_list(s),
2760 px509, ppkey, NULL, NULL, NULL);
2765 if (s->ctx->client_cert_cb)
2766 i = s->ctx->client_cert_cb(s,px509,ppkey);