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->state=SSL3_ST_CW_FLUSH;
448 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
451 s->s3->tmp.next_state=SSL_ST_OK;
452 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
455 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
456 s->s3->delay_buf_pop_ret=0;
461 #ifndef OPENSSL_NO_TLSEXT
462 /* Allow NewSessionTicket if ticket expected */
463 if (s->tlsext_ticket_expected)
464 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
468 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
473 #ifndef OPENSSL_NO_TLSEXT
474 case SSL3_ST_CR_SESSION_TICKET_A:
475 case SSL3_ST_CR_SESSION_TICKET_B:
476 ret=ssl3_get_new_session_ticket(s);
477 if (ret <= 0) goto end;
478 s->state=SSL3_ST_CR_FINISHED_A;
482 case SSL3_ST_CR_CERT_STATUS_A:
483 case SSL3_ST_CR_CERT_STATUS_B:
484 ret=ssl3_get_cert_status(s);
485 if (ret <= 0) goto end;
486 s->state=SSL3_ST_CR_KEY_EXCH_A;
491 case SSL3_ST_CR_FINISHED_A:
492 case SSL3_ST_CR_FINISHED_B:
494 s->s3->flags |= SSL3_FLAGS_CCS_OK;
495 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
496 SSL3_ST_CR_FINISHED_B);
497 if (ret <= 0) goto end;
500 s->state=SSL3_ST_CW_CHANGE_A;
506 case SSL3_ST_CW_FLUSH:
507 s->rwstate=SSL_WRITING;
508 if (BIO_flush(s->wbio) <= 0)
513 s->rwstate=SSL_NOTHING;
514 s->state=s->s3->tmp.next_state;
518 /* clean a few things up */
519 ssl3_cleanup_key_block(s);
521 if (s->init_buf != NULL)
523 BUF_MEM_free(s->init_buf);
527 /* If we are not 'joining' the last two packets,
528 * remove the buffering now */
529 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
530 ssl_free_wbio_buffer(s);
531 /* else do it later in ssl3_write */
536 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
537 if (s->hit) s->ctx->stats.sess_hit++;
541 s->handshake_func=ssl3_connect;
542 s->ctx->stats.sess_connect_good++;
544 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
550 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
556 /* did we do anything */
557 if (!s->s3->tmp.reuse_message && !skip)
561 if ((ret=BIO_flush(s->wbio)) <= 0)
565 if ((cb != NULL) && (s->state != state))
569 cb(s,SSL_CB_CONNECT_LOOP,1);
580 cb(s,SSL_CB_CONNECT_EXIT,ret);
585 int ssl3_client_hello(SSL *s)
590 unsigned long Time,l;
591 #ifndef OPENSSL_NO_COMP
596 buf=(unsigned char *)s->init_buf->data;
597 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
599 SSL_SESSION *sess = s->session;
600 if ((sess == NULL) ||
601 (sess->ssl_version != s->version) ||
602 #ifdef OPENSSL_NO_TLSEXT
603 !sess->session_id_length ||
605 (!sess->session_id_length && !sess->tlsext_tick) ||
607 (sess->not_resumable))
609 if (!ssl_get_new_session(s,0))
612 /* else use the pre-loaded session */
614 p=s->s3->client_random;
615 Time=(unsigned long)time(NULL); /* Time */
617 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
620 /* Do the message type and length last */
623 *(p++)=s->version>>8;
624 *(p++)=s->version&0xff;
625 s->client_version=s->version;
628 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
635 i=s->session->session_id_length;
639 if (i > (int)sizeof(s->session->session_id))
641 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
644 memcpy(p,s->session->session_id,i);
648 /* Ciphers supported */
649 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
652 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
659 #ifdef OPENSSL_NO_COMP
662 if (s->ctx->comp_methods == NULL)
665 j=sk_SSL_COMP_num(s->ctx->comp_methods);
669 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
673 *(p++)=0; /* Add the NULL method */
674 #ifndef OPENSSL_NO_TLSEXT
675 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
677 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
683 *(d++)=SSL3_MT_CLIENT_HELLO;
686 s->state=SSL3_ST_CW_CLNT_HELLO_B;
687 /* number of bytes to write */
692 /* SSL3_ST_CW_CLNT_HELLO_B */
693 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
698 int ssl3_get_server_hello(SSL *s)
700 STACK_OF(SSL_CIPHER) *sk;
706 #ifndef OPENSSL_NO_COMP
710 n=s->method->ssl_get_message(s,
711 SSL3_ST_CR_SRVR_HELLO_A,
712 SSL3_ST_CR_SRVR_HELLO_B,
717 if (!ok) return((int)n);
719 if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
721 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
723 if ( s->d1->send_cookie == 0)
725 s->s3->tmp.reuse_message = 1;
728 else /* already sent a cookie */
730 al=SSL_AD_UNEXPECTED_MESSAGE;
731 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
737 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
739 al=SSL_AD_UNEXPECTED_MESSAGE;
740 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
744 d=p=(unsigned char *)s->init_msg;
746 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
748 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
749 s->version=(s->version&0xff00)|p[1];
750 al=SSL_AD_PROTOCOL_VERSION;
755 /* load the server hello data */
756 /* load the server random */
757 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
760 /* get the session-id */
763 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
765 al=SSL_AD_ILLEGAL_PARAMETER;
766 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
770 if (j != 0 && j == s->session->session_id_length
771 && memcmp(p,s->session->session_id,j) == 0)
773 if(s->sid_ctx_length != s->session->sid_ctx_length
774 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
776 /* actually a client application bug */
777 al=SSL_AD_ILLEGAL_PARAMETER;
778 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
781 s->s3->flags |= SSL3_FLAGS_CCS_OK;
784 else /* a miss or crap from the other end */
786 /* If we were trying for session-id reuse, make a new
787 * SSL_SESSION so we don't stuff up other people */
789 if (s->session->session_id_length > 0)
791 if (!ssl_get_new_session(s,0))
793 al=SSL_AD_INTERNAL_ERROR;
797 s->session->session_id_length=j;
798 memcpy(s->session->session_id,p,j); /* j could be 0 */
801 c=ssl_get_cipher_by_char(s,p);
805 al=SSL_AD_ILLEGAL_PARAMETER;
806 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
809 p+=ssl_put_cipher_by_char(s,NULL,NULL);
811 sk=ssl_get_ciphers_by_id(s);
812 i=sk_SSL_CIPHER_find(sk,c);
815 /* we did not say we would use this cipher */
816 al=SSL_AD_ILLEGAL_PARAMETER;
817 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
821 /* Depending on the session caching (internal/external), the cipher
822 and/or cipher_id values may not be set. Make sure that
823 cipher_id is set and use it for comparison. */
824 if (s->session->cipher)
825 s->session->cipher_id = s->session->cipher->id;
826 if (s->hit && (s->session->cipher_id != c->id))
828 /* Workaround is now obsolete */
831 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
834 al=SSL_AD_ILLEGAL_PARAMETER;
835 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
839 s->s3->tmp.new_cipher=c;
841 /* lets get the compression algorithm */
843 #ifdef OPENSSL_NO_COMP
846 al=SSL_AD_ILLEGAL_PARAMETER;
847 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
855 comp=ssl3_comp_find(s->ctx->comp_methods,j);
857 if ((j != 0) && (comp == NULL))
859 al=SSL_AD_ILLEGAL_PARAMETER;
860 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
865 s->s3->tmp.new_compression=comp;
868 #ifndef OPENSSL_NO_TLSEXT
870 if (s->version >= SSL3_VERSION)
872 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
874 /* 'al' set by ssl_parse_serverhello_tlsext */
875 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
878 if (ssl_check_serverhello_tlsext(s) <= 0)
880 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
889 /* wrong packet length */
890 al=SSL_AD_DECODE_ERROR;
891 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
897 ssl3_send_alert(s,SSL3_AL_FATAL,al);
898 #ifndef OPENSSL_NO_TLSEXT
904 int ssl3_get_server_certificate(SSL *s)
907 unsigned long n,nc,llen,l;
909 const unsigned char *q,*p;
911 STACK_OF(X509) *sk=NULL;
914 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
916 n=s->method->ssl_get_message(s,
923 if (!ok) return((int)n);
925 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
926 ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) &&
927 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
929 s->s3->tmp.reuse_message=1;
933 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
935 al=SSL_AD_UNEXPECTED_MESSAGE;
936 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
939 p=d=(unsigned char *)s->init_msg;
941 if ((sk=sk_X509_new_null()) == NULL)
943 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
950 al=SSL_AD_DECODE_ERROR;
951 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
954 for (nc=0; nc<llen; )
959 al=SSL_AD_DECODE_ERROR;
960 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
965 x=d2i_X509(NULL,&q,l);
968 al=SSL_AD_BAD_CERTIFICATE;
969 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
974 al=SSL_AD_DECODE_ERROR;
975 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
978 if (!sk_X509_push(sk,x))
980 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
988 i=ssl_verify_cert_chain(s,sk);
989 if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0)
990 #ifndef OPENSSL_NO_KRB5
991 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
992 != (SSL_aKRB5|SSL_kKRB5)
993 #endif /* OPENSSL_NO_KRB5 */
996 al=ssl_verify_alarm_type(s->verify_result);
997 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
1000 ERR_clear_error(); /* but we keep s->verify_result */
1002 sc=ssl_sess_cert_new();
1003 if (sc == NULL) goto err;
1005 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
1006 s->session->sess_cert=sc;
1009 /* Inconsistency alert: cert_chain does include the peer's
1010 * certificate, which we don't include in s3_srvr.c */
1011 x=sk_X509_value(sk,0);
1013 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
1015 pkey=X509_get_pubkey(x);
1017 /* VRS: allow null cert if auth == KRB5 */
1018 need_cert = ((s->s3->tmp.new_cipher->algorithms
1019 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
1020 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
1023 printf("pkey,x = %p, %p\n", (void *)pkey,(void *)x);
1024 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1025 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
1026 s->s3->tmp.new_cipher->algorithms, need_cert);
1027 #endif /* KSSL_DEBUG */
1029 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1033 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1034 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1038 i=ssl_cert_type(x,pkey);
1039 if (need_cert && i < 0)
1043 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1044 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1050 sc->peer_cert_type=i;
1051 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1052 /* Why would the following ever happen?
1053 * We just created sc a couple of lines ago. */
1054 if (sc->peer_pkeys[i].x509 != NULL)
1055 X509_free(sc->peer_pkeys[i].x509);
1056 sc->peer_pkeys[i].x509=x;
1057 sc->peer_key= &(sc->peer_pkeys[i]);
1059 if (s->session->peer != NULL)
1060 X509_free(s->session->peer);
1061 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1066 sc->peer_cert_type=i;
1069 if (s->session->peer != NULL)
1070 X509_free(s->session->peer);
1071 s->session->peer=NULL;
1073 s->session->verify_result = s->verify_result;
1081 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1084 EVP_PKEY_free(pkey);
1086 sk_X509_pop_free(sk,X509_free);
1090 int ssl3_get_key_exchange(SSL *s)
1092 #ifndef OPENSSL_NO_RSA
1093 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1096 unsigned char *param,*p;
1097 int al,i,j,param_len,ok;
1099 EVP_PKEY *pkey=NULL;
1100 #ifndef OPENSSL_NO_RSA
1103 #ifndef OPENSSL_NO_DH
1106 #ifndef OPENSSL_NO_ECDH
1107 EC_KEY *ecdh = NULL;
1108 BN_CTX *bn_ctx = NULL;
1109 EC_POINT *srvr_ecpoint = NULL;
1111 int encoded_pt_len = 0;
1114 /* use same message size as in ssl3_get_certificate_request()
1115 * as ServerKeyExchange message may be skipped */
1116 n=s->method->ssl_get_message(s,
1117 SSL3_ST_CR_KEY_EXCH_A,
1118 SSL3_ST_CR_KEY_EXCH_B,
1123 if (!ok) return((int)n);
1125 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1127 s->s3->tmp.reuse_message=1;
1131 param=p=(unsigned char *)s->init_msg;
1133 if (s->session->sess_cert != NULL)
1135 #ifndef OPENSSL_NO_RSA
1136 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1138 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1139 s->session->sess_cert->peer_rsa_tmp=NULL;
1142 #ifndef OPENSSL_NO_DH
1143 if (s->session->sess_cert->peer_dh_tmp)
1145 DH_free(s->session->sess_cert->peer_dh_tmp);
1146 s->session->sess_cert->peer_dh_tmp=NULL;
1149 #ifndef OPENSSL_NO_ECDH
1150 if (s->session->sess_cert->peer_ecdh_tmp)
1152 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1153 s->session->sess_cert->peer_ecdh_tmp=NULL;
1159 s->session->sess_cert=ssl_sess_cert_new();
1163 alg=s->s3->tmp.new_cipher->algorithms;
1164 EVP_MD_CTX_init(&md_ctx);
1166 #ifndef OPENSSL_NO_RSA
1169 if ((rsa=RSA_new()) == NULL)
1171 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1178 al=SSL_AD_DECODE_ERROR;
1179 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1182 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1184 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1193 al=SSL_AD_DECODE_ERROR;
1194 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1197 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1199 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1205 /* this should be because we are using an export cipher */
1207 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1210 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1213 s->session->sess_cert->peer_rsa_tmp=rsa;
1216 #else /* OPENSSL_NO_RSA */
1220 #ifndef OPENSSL_NO_DH
1221 else if (alg & SSL_kEDH)
1223 if ((dh=DH_new()) == NULL)
1225 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1232 al=SSL_AD_DECODE_ERROR;
1233 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1236 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1238 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1247 al=SSL_AD_DECODE_ERROR;
1248 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1251 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1253 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1262 al=SSL_AD_DECODE_ERROR;
1263 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1266 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1268 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1274 #ifndef OPENSSL_NO_RSA
1276 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1281 #ifndef OPENSSL_NO_DSA
1282 else if (alg & SSL_aDSS)
1283 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1285 /* else anonymous DH, so no certificate or pkey. */
1287 s->session->sess_cert->peer_dh_tmp=dh;
1290 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1292 al=SSL_AD_ILLEGAL_PARAMETER;
1293 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1296 #endif /* !OPENSSL_NO_DH */
1298 #ifndef OPENSSL_NO_ECDH
1299 else if (alg & SSL_kECDHE)
1302 const EC_GROUP *group;
1304 if ((ecdh=EC_KEY_new()) == NULL)
1306 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1310 /* Extract elliptic curve parameters and the
1311 * server's ephemeral ECDH public key.
1312 * Keep accumulating lengths of various components in
1313 * param_len and make sure it never exceeds n.
1316 /* XXX: For now we only support named (not generic) curves
1317 * and the ECParameters in this case is just three bytes.
1320 if ((param_len > n) ||
1321 (*p != NAMED_CURVE_TYPE) ||
1322 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1324 al=SSL_AD_INTERNAL_ERROR;
1325 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1329 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1332 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1335 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1337 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1340 EC_GROUP_free(ngroup);
1342 group = EC_KEY_get0_group(ecdh);
1344 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1345 (EC_GROUP_get_degree(group) > 163))
1347 al=SSL_AD_EXPORT_RESTRICTION;
1348 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1354 /* Next, get the encoded ECPoint */
1355 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1356 ((bn_ctx = BN_CTX_new()) == NULL))
1358 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1362 encoded_pt_len = *p; /* length of encoded point */
1364 param_len += (1 + encoded_pt_len);
1365 if ((param_len > n) ||
1366 (EC_POINT_oct2point(group, srvr_ecpoint,
1367 p, encoded_pt_len, bn_ctx) == 0))
1369 al=SSL_AD_DECODE_ERROR;
1370 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1377 /* The ECC/TLS specification does not mention
1378 * the use of DSA to sign ECParameters in the server
1379 * key exchange message. We do support RSA and ECDSA.
1382 #ifndef OPENSSL_NO_RSA
1383 else if (alg & SSL_aRSA)
1384 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1386 #ifndef OPENSSL_NO_ECDSA
1387 else if (alg & SSL_aECDSA)
1388 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1390 /* else anonymous ECDH, so no certificate or pkey. */
1391 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1392 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1394 BN_CTX_free(bn_ctx);
1396 EC_POINT_free(srvr_ecpoint);
1397 srvr_ecpoint = NULL;
1399 else if (alg & SSL_kECDH)
1401 al=SSL_AD_UNEXPECTED_MESSAGE;
1402 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1405 #endif /* !OPENSSL_NO_ECDH */
1408 al=SSL_AD_HANDSHAKE_FAILURE;
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1414 /* p points to the next byte, there are 'n' bytes left */
1416 /* if it was signed, check the signature */
1421 j=EVP_PKEY_size(pkey);
1423 if ((i != n) || (n > j) || (n <= 0))
1425 /* wrong packet length */
1426 al=SSL_AD_DECODE_ERROR;
1427 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1431 #ifndef OPENSSL_NO_RSA
1432 if (pkey->type == EVP_PKEY_RSA)
1438 for (num=2; num > 0; num--)
1440 EVP_MD_CTX_set_flags(&md_ctx,
1441 EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
1442 EVP_DigestInit_ex(&md_ctx,(num == 2)
1443 ?s->ctx->md5:s->ctx->sha1, NULL);
1444 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1445 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1446 EVP_DigestUpdate(&md_ctx,param,param_len);
1447 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1451 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1455 al=SSL_AD_DECRYPT_ERROR;
1456 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1462 al=SSL_AD_DECRYPT_ERROR;
1463 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1469 #ifndef OPENSSL_NO_DSA
1470 if (pkey->type == EVP_PKEY_DSA)
1473 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1474 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1475 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1476 EVP_VerifyUpdate(&md_ctx,param,param_len);
1477 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1480 al=SSL_AD_DECRYPT_ERROR;
1481 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1487 #ifndef OPENSSL_NO_ECDSA
1488 if (pkey->type == EVP_PKEY_EC)
1490 /* let's do ECDSA */
1491 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1492 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1493 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1494 EVP_VerifyUpdate(&md_ctx,param,param_len);
1495 if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0)
1498 al=SSL_AD_DECRYPT_ERROR;
1499 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1506 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1512 /* still data left over */
1513 if (!(alg & SSL_aNULL))
1515 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1520 al=SSL_AD_DECODE_ERROR;
1521 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1525 EVP_PKEY_free(pkey);
1526 EVP_MD_CTX_cleanup(&md_ctx);
1529 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1531 EVP_PKEY_free(pkey);
1532 #ifndef OPENSSL_NO_RSA
1536 #ifndef OPENSSL_NO_DH
1540 #ifndef OPENSSL_NO_ECDH
1541 BN_CTX_free(bn_ctx);
1542 EC_POINT_free(srvr_ecpoint);
1546 EVP_MD_CTX_cleanup(&md_ctx);
1550 int ssl3_get_certificate_request(SSL *s)
1553 unsigned long n,nc,l;
1554 unsigned int llen,ctype_num,i;
1556 const unsigned char *p,*q;
1558 STACK_OF(X509_NAME) *ca_sk=NULL;
1560 n=s->method->ssl_get_message(s,
1561 SSL3_ST_CR_CERT_REQ_A,
1562 SSL3_ST_CR_CERT_REQ_B,
1567 if (!ok) return((int)n);
1569 s->s3->tmp.cert_req=0;
1571 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1573 s->s3->tmp.reuse_message=1;
1577 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1579 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1580 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1584 /* TLS does not like anon-DH with client cert */
1585 if (s->version > SSL3_VERSION)
1587 l=s->s3->tmp.new_cipher->algorithms;
1590 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1591 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1596 p=d=(unsigned char *)s->init_msg;
1598 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1600 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1604 /* get the certificate types */
1606 if (ctype_num > SSL3_CT_NUMBER)
1607 ctype_num=SSL3_CT_NUMBER;
1608 for (i=0; i<ctype_num; i++)
1609 s->s3->tmp.ctype[i]= p[i];
1612 /* get the CA RDNs */
1617 out=fopen("/tmp/vsign.der","w");
1618 fwrite(p,1,llen,out);
1623 if ((llen+ctype_num+2+1) != n)
1625 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1626 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1630 for (nc=0; nc<llen; )
1633 if ((l+nc+2) > llen)
1635 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1636 goto cont; /* netscape bugs */
1637 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1638 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1644 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1646 /* If netscape tolerance is on, ignore errors */
1647 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1651 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1652 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1659 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1660 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1663 if (!sk_X509_NAME_push(ca_sk,xn))
1665 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1679 /* we should setup a certificate to return.... */
1680 s->s3->tmp.cert_req=1;
1681 s->s3->tmp.ctype_num=ctype_num;
1682 if (s->s3->tmp.ca_names != NULL)
1683 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1684 s->s3->tmp.ca_names=ca_sk;
1689 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1693 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1695 return(X509_NAME_cmp(*a,*b));
1697 #ifndef OPENSSL_NO_TLSEXT
1698 int ssl3_get_new_session_ticket(SSL *s)
1700 int ok,al,ret=0, ticklen;
1702 const unsigned char *p;
1705 n=s->method->ssl_get_message(s,
1706 SSL3_ST_CR_SESSION_TICKET_A,
1707 SSL3_ST_CR_SESSION_TICKET_B,
1715 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1717 s->s3->tmp.reuse_message=1;
1720 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1722 al=SSL_AD_UNEXPECTED_MESSAGE;
1723 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1728 /* need at least ticket_lifetime_hint + ticket length */
1729 al = SSL_AD_DECODE_ERROR;
1730 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1734 p=d=(unsigned char *)s->init_msg;
1735 n2l(p, s->session->tlsext_tick_lifetime_hint);
1737 /* ticket_lifetime_hint + ticket_length + ticket */
1738 if (ticklen + 6 != n)
1740 al = SSL_AD_DECODE_ERROR;
1741 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1744 if (s->session->tlsext_tick)
1746 OPENSSL_free(s->session->tlsext_tick);
1747 s->session->tlsext_ticklen = 0;
1749 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1750 if (!s->session->tlsext_tick)
1752 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1755 memcpy(s->session->tlsext_tick, p, ticklen);
1756 s->session->tlsext_ticklen = ticklen;
1757 /* There are two ways to detect a resumed ticket sesion.
1758 * One is to set an appropriate session ID and then the server
1759 * must return a match in ServerHello. This allows the normal
1760 * client session ID matching to work and we know much
1761 * earlier that the ticket has been accepted.
1763 * The other way is to set zero length session ID when the
1764 * ticket is presented and rely on the handshake to determine
1765 * session resumption.
1767 * We choose the former approach because this fits in with
1768 * assumptions elsewhere in OpenSSL. The session ID is set
1769 * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the
1772 EVP_Digest(p, ticklen,
1773 s->session->session_id, &s->session->session_id_length,
1774 #ifndef OPENSSL_NO_SHA256
1775 EVP_sha256(), NULL);
1782 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1787 int ssl3_get_cert_status(SSL *s)
1790 unsigned long resplen;
1792 const unsigned char *p;
1794 n=s->method->ssl_get_message(s,
1795 SSL3_ST_CR_CERT_STATUS_A,
1796 SSL3_ST_CR_CERT_STATUS_B,
1797 SSL3_MT_CERTIFICATE_STATUS,
1801 if (!ok) return((int)n);
1804 /* need at least status type + length */
1805 al = SSL_AD_DECODE_ERROR;
1806 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1809 p = (unsigned char *)s->init_msg;
1810 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1812 al = SSL_AD_DECODE_ERROR;
1813 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1817 if (resplen + 4 != (unsigned long)n)
1819 al = SSL_AD_DECODE_ERROR;
1820 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1823 if (s->tlsext_ocsp_resp)
1824 OPENSSL_free(s->tlsext_ocsp_resp);
1825 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1826 if (!s->tlsext_ocsp_resp)
1828 al = SSL_AD_INTERNAL_ERROR;
1829 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1832 s->tlsext_ocsp_resplen = resplen;
1833 if (s->ctx->tlsext_status_cb)
1836 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1839 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1840 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1845 al = SSL_AD_INTERNAL_ERROR;
1846 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1852 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1857 int ssl3_get_server_done(SSL *s)
1862 n=s->method->ssl_get_message(s,
1863 SSL3_ST_CR_SRVR_DONE_A,
1864 SSL3_ST_CR_SRVR_DONE_B,
1865 SSL3_MT_SERVER_DONE,
1866 30, /* should be very small, like 0 :-) */
1869 if (!ok) return((int)n);
1872 /* should contain no data */
1873 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1874 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1882 int ssl3_send_client_key_exchange(SSL *s)
1884 unsigned char *p,*d;
1887 #ifndef OPENSSL_NO_RSA
1889 EVP_PKEY *pkey=NULL;
1891 #ifndef OPENSSL_NO_KRB5
1893 #endif /* OPENSSL_NO_KRB5 */
1894 #ifndef OPENSSL_NO_ECDH
1895 EC_KEY *clnt_ecdh = NULL;
1896 const EC_POINT *srvr_ecpoint = NULL;
1897 EVP_PKEY *srvr_pub_pkey = NULL;
1898 unsigned char *encodedPoint = NULL;
1899 int encoded_pt_len = 0;
1900 BN_CTX * bn_ctx = NULL;
1903 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1905 d=(unsigned char *)s->init_buf->data;
1908 l=s->s3->tmp.new_cipher->algorithms;
1910 /* Fool emacs indentation */
1912 #ifndef OPENSSL_NO_RSA
1913 else if (l & SSL_kRSA)
1916 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1918 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1919 rsa=s->session->sess_cert->peer_rsa_tmp;
1922 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1923 if ((pkey == NULL) ||
1924 (pkey->type != EVP_PKEY_RSA) ||
1925 (pkey->pkey.rsa == NULL))
1927 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1931 EVP_PKEY_free(pkey);
1934 tmp_buf[0]=s->client_version>>8;
1935 tmp_buf[1]=s->client_version&0xff;
1936 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1939 s->session->master_key_length=sizeof tmp_buf;
1942 /* Fix buf for TLS and beyond */
1943 if (s->version > SSL3_VERSION)
1945 n=RSA_public_encrypt(sizeof tmp_buf,
1946 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1948 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1949 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1953 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1957 /* Fix buf for TLS and beyond */
1958 if (s->version > SSL3_VERSION)
1964 s->session->master_key_length=
1965 s->method->ssl3_enc->generate_master_secret(s,
1966 s->session->master_key,
1967 tmp_buf,sizeof tmp_buf);
1968 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1971 #ifndef OPENSSL_NO_KRB5
1972 else if (l & SSL_kKRB5)
1974 krb5_error_code krb5rc;
1975 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1976 /* krb5_data krb5_ap_req; */
1977 krb5_data *enc_ticket;
1978 krb5_data authenticator, *authp = NULL;
1979 EVP_CIPHER_CTX ciph_ctx;
1980 EVP_CIPHER *enc = NULL;
1981 unsigned char iv[EVP_MAX_IV_LENGTH];
1982 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1983 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1984 + EVP_MAX_IV_LENGTH];
1985 int padl, outl = sizeof(epms);
1987 EVP_CIPHER_CTX_init(&ciph_ctx);
1990 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1992 #endif /* KSSL_DEBUG */
1996 if (KRB5SENDAUTH) authp = &authenticator;
1997 #endif /* KRB5SENDAUTH */
1999 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
2001 enc = kssl_map_enc(kssl_ctx->enctype);
2006 printf("kssl_cget_tkt rtn %d\n", krb5rc);
2007 if (krb5rc && kssl_err.text)
2008 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
2010 #endif /* KSSL_DEBUG */
2014 ssl3_send_alert(s,SSL3_AL_FATAL,
2015 SSL_AD_HANDSHAKE_FAILURE);
2016 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2021 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
2022 ** in place of RFC 2712 KerberosWrapper, as in:
2024 ** Send ticket (copy to *p, set n = length)
2025 ** n = krb5_ap_req.length;
2026 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
2027 ** if (krb5_ap_req.data)
2028 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
2030 ** Now using real RFC 2712 KerberosWrapper
2031 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
2032 ** Note: 2712 "opaque" types are here replaced
2033 ** with a 2-byte length followed by the value.
2035 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
2036 ** Where "xx xx" = length bytes. Shown here with
2037 ** optional authenticator omitted.
2040 /* KerberosWrapper.Ticket */
2041 s2n(enc_ticket->length,p);
2042 memcpy(p, enc_ticket->data, enc_ticket->length);
2043 p+= enc_ticket->length;
2044 n = enc_ticket->length + 2;
2046 /* KerberosWrapper.Authenticator */
2047 if (authp && authp->length)
2049 s2n(authp->length,p);
2050 memcpy(p, authp->data, authp->length);
2052 n+= authp->length + 2;
2060 s2n(0,p);/* null authenticator length */
2064 tmp_buf[0]=s->client_version>>8;
2065 tmp_buf[1]=s->client_version&0xff;
2066 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2069 /* 20010420 VRS. Tried it this way; failed.
2070 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2071 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2072 ** kssl_ctx->length);
2073 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2076 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2077 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2079 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2081 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2083 if (outl > sizeof epms)
2085 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2088 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2090 /* KerberosWrapper.EncryptedPreMasterSecret */
2092 memcpy(p, epms, outl);
2096 s->session->master_key_length=
2097 s->method->ssl3_enc->generate_master_secret(s,
2098 s->session->master_key,
2099 tmp_buf, sizeof tmp_buf);
2101 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2102 OPENSSL_cleanse(epms, outl);
2105 #ifndef OPENSSL_NO_DH
2106 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2108 DH *dh_srvr,*dh_clnt;
2110 if (s->session->sess_cert == NULL)
2112 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2113 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2117 if (s->session->sess_cert->peer_dh_tmp != NULL)
2118 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2121 /* we get them from the cert */
2122 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2123 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2127 /* generate a new random key */
2128 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2130 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2133 if (!DH_generate_key(dh_clnt))
2135 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2139 /* use the 'p' output buffer for the DH key, but
2140 * make sure to clear it out afterwards */
2142 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2146 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2150 /* generate master key from the result */
2151 s->session->master_key_length=
2152 s->method->ssl3_enc->generate_master_secret(s,
2153 s->session->master_key,p,n);
2157 /* send off the data */
2158 n=BN_num_bytes(dh_clnt->pub_key);
2160 BN_bn2bin(dh_clnt->pub_key,p);
2165 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2169 #ifndef OPENSSL_NO_ECDH
2170 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2172 const EC_GROUP *srvr_group = NULL;
2174 int ecdh_clnt_cert = 0;
2177 if (s->session->sess_cert == NULL)
2179 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
2180 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
2184 /* Did we send out the client's
2185 * ECDH share for use in premaster
2186 * computation as part of client certificate?
2187 * If so, set ecdh_clnt_cert to 1.
2189 if ((l & SSL_kECDH) && (s->cert != NULL))
2191 /* XXX: For now, we do not support client
2192 * authentication using ECDH certificates.
2193 * To add such support, one needs to add
2194 * code that checks for appropriate
2195 * conditions and sets ecdh_clnt_cert to 1.
2196 * For example, the cert have an ECC
2197 * key on the same curve as the server's
2198 * and the key should be authorized for
2201 * One also needs to add code in ssl3_connect
2202 * to skip sending the certificate verify
2205 * if ((s->cert->key->privatekey != NULL) &&
2206 * (s->cert->key->privatekey->type ==
2207 * EVP_PKEY_EC) && ...)
2208 * ecdh_clnt_cert = 1;
2212 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2214 tkey = s->session->sess_cert->peer_ecdh_tmp;
2218 /* Get the Server Public Key from Cert */
2219 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2220 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2221 if ((srvr_pub_pkey == NULL) ||
2222 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2223 (srvr_pub_pkey->pkey.ec == NULL))
2225 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2226 ERR_R_INTERNAL_ERROR);
2230 tkey = srvr_pub_pkey->pkey.ec;
2233 srvr_group = EC_KEY_get0_group(tkey);
2234 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2236 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2238 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2239 ERR_R_INTERNAL_ERROR);
2243 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2245 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2249 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2251 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2256 /* Reuse key info from our certificate
2257 * We only need our private key to perform
2258 * the ECDH computation.
2260 const BIGNUM *priv_key;
2261 tkey = s->cert->key->privatekey->pkey.ec;
2262 priv_key = EC_KEY_get0_private_key(tkey);
2263 if (priv_key == NULL)
2265 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2268 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2270 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2276 /* Generate a new ECDH key pair */
2277 if (!(EC_KEY_generate_key(clnt_ecdh)))
2279 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2284 /* use the 'p' output buffer for the ECDH key, but
2285 * make sure to clear it out afterwards
2288 field_size = EC_GROUP_get_degree(srvr_group);
2289 if (field_size <= 0)
2291 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2295 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2298 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2303 /* generate master key from the result */
2304 s->session->master_key_length = s->method->ssl3_enc \
2305 -> generate_master_secret(s,
2306 s->session->master_key,
2309 memset(p, 0, n); /* clean up */
2313 /* Send empty client key exch message */
2318 /* First check the size of encoding and
2319 * allocate memory accordingly.
2322 EC_POINT_point2oct(srvr_group,
2323 EC_KEY_get0_public_key(clnt_ecdh),
2324 POINT_CONVERSION_UNCOMPRESSED,
2327 encodedPoint = (unsigned char *)
2328 OPENSSL_malloc(encoded_pt_len *
2329 sizeof(unsigned char));
2330 bn_ctx = BN_CTX_new();
2331 if ((encodedPoint == NULL) ||
2334 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2338 /* Encode the public key */
2339 n = EC_POINT_point2oct(srvr_group,
2340 EC_KEY_get0_public_key(clnt_ecdh),
2341 POINT_CONVERSION_UNCOMPRESSED,
2342 encodedPoint, encoded_pt_len, bn_ctx);
2344 *p = n; /* length of encoded point */
2345 /* Encoded point will be copied here */
2347 /* copy the point */
2348 memcpy((unsigned char *)p, encodedPoint, n);
2349 /* increment n to account for length field */
2353 /* Free allocated memory */
2354 BN_CTX_free(bn_ctx);
2355 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2356 if (clnt_ecdh != NULL)
2357 EC_KEY_free(clnt_ecdh);
2358 EVP_PKEY_free(srvr_pub_pkey);
2360 #endif /* !OPENSSL_NO_ECDH */
2363 ssl3_send_alert(s, SSL3_AL_FATAL,
2364 SSL_AD_HANDSHAKE_FAILURE);
2365 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2366 ERR_R_INTERNAL_ERROR);
2370 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2373 s->state=SSL3_ST_CW_KEY_EXCH_B;
2374 /* number of bytes to write */
2379 /* SSL3_ST_CW_KEY_EXCH_B */
2380 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2382 #ifndef OPENSSL_NO_ECDH
2383 BN_CTX_free(bn_ctx);
2384 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2385 if (clnt_ecdh != NULL)
2386 EC_KEY_free(clnt_ecdh);
2387 EVP_PKEY_free(srvr_pub_pkey);
2392 int ssl3_send_client_verify(SSL *s)
2394 unsigned char *p,*d;
2395 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2397 #ifndef OPENSSL_NO_RSA
2401 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2405 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2407 d=(unsigned char *)s->init_buf->data;
2409 pkey=s->cert->key->privatekey;
2411 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2412 &(data[MD5_DIGEST_LENGTH]));
2414 #ifndef OPENSSL_NO_RSA
2415 if (pkey->type == EVP_PKEY_RSA)
2417 s->method->ssl3_enc->cert_verify_mac(s,
2418 &(s->s3->finish_dgst1),&(data[0]));
2419 if (RSA_sign(NID_md5_sha1, data,
2420 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2421 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2423 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2431 #ifndef OPENSSL_NO_DSA
2432 if (pkey->type == EVP_PKEY_DSA)
2434 if (!DSA_sign(pkey->save_type,
2435 &(data[MD5_DIGEST_LENGTH]),
2436 SHA_DIGEST_LENGTH,&(p[2]),
2437 (unsigned int *)&j,pkey->pkey.dsa))
2439 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2447 #ifndef OPENSSL_NO_ECDSA
2448 if (pkey->type == EVP_PKEY_EC)
2450 if (!ECDSA_sign(pkey->save_type,
2451 &(data[MD5_DIGEST_LENGTH]),
2452 SHA_DIGEST_LENGTH,&(p[2]),
2453 (unsigned int *)&j,pkey->pkey.ec))
2455 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2465 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2468 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2471 s->state=SSL3_ST_CW_CERT_VRFY_B;
2472 s->init_num=(int)n+4;
2475 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2480 int ssl3_send_client_certificate(SSL *s)
2483 EVP_PKEY *pkey=NULL;
2487 if (s->state == SSL3_ST_CW_CERT_A)
2489 if ((s->cert == NULL) ||
2490 (s->cert->key->x509 == NULL) ||
2491 (s->cert->key->privatekey == NULL))
2492 s->state=SSL3_ST_CW_CERT_B;
2494 s->state=SSL3_ST_CW_CERT_C;
2497 /* We need to get a client cert */
2498 if (s->state == SSL3_ST_CW_CERT_B)
2500 /* If we get an error, we need to
2501 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2502 * We then get retied later */
2504 i = ssl_do_client_cert_cb(s, &x509, &pkey);
2507 s->rwstate=SSL_X509_LOOKUP;
2510 s->rwstate=SSL_NOTHING;
2511 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2513 s->state=SSL3_ST_CW_CERT_B;
2514 if ( !SSL_use_certificate(s,x509) ||
2515 !SSL_use_PrivateKey(s,pkey))
2521 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2524 if (x509 != NULL) X509_free(x509);
2525 if (pkey != NULL) EVP_PKEY_free(pkey);
2528 if (s->version == SSL3_VERSION)
2530 s->s3->tmp.cert_req=0;
2531 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2536 s->s3->tmp.cert_req=2;
2540 /* Ok, we have a cert */
2541 s->state=SSL3_ST_CW_CERT_C;
2544 if (s->state == SSL3_ST_CW_CERT_C)
2546 s->state=SSL3_ST_CW_CERT_D;
2547 l=ssl3_output_cert_chain(s,
2548 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2552 /* SSL3_ST_CW_CERT_D */
2553 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2556 #define has_bits(i,m) (((i)&(m)) == (m))
2558 int ssl3_check_cert_and_algorithm(SSL *s)
2562 EVP_PKEY *pkey=NULL;
2564 #ifndef OPENSSL_NO_RSA
2567 #ifndef OPENSSL_NO_DH
2571 sc=s->session->sess_cert;
2573 algs=s->s3->tmp.new_cipher->algorithms;
2575 /* we don't have a certificate */
2576 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2581 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2585 #ifndef OPENSSL_NO_RSA
2586 rsa=s->session->sess_cert->peer_rsa_tmp;
2588 #ifndef OPENSSL_NO_DH
2589 dh=s->session->sess_cert->peer_dh_tmp;
2592 /* This is the passed certificate */
2594 idx=sc->peer_cert_type;
2595 #ifndef OPENSSL_NO_ECDH
2596 if (idx == SSL_PKEY_ECC)
2598 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2599 s->s3->tmp.new_cipher) == 0)
2600 { /* check failed */
2601 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2610 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2611 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2612 EVP_PKEY_free(pkey);
2615 /* Check that we have a certificate if we require one */
2616 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2618 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2621 #ifndef OPENSSL_NO_DSA
2622 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2624 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2628 #ifndef OPENSSL_NO_RSA
2629 if ((algs & SSL_kRSA) &&
2630 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2632 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2636 #ifndef OPENSSL_NO_DH
2637 if ((algs & SSL_kEDH) &&
2638 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2640 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2643 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2645 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2648 #ifndef OPENSSL_NO_DSA
2649 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2651 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2657 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2659 #ifndef OPENSSL_NO_RSA
2660 if (algs & SSL_kRSA)
2663 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2665 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2671 #ifndef OPENSSL_NO_DH
2672 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2675 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2677 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2684 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2690 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2696 #ifndef OPENSSL_NO_ECDH
2697 /* This is the complement of nid2curve_id in s3_srvr.c. */
2698 static int curve_id2nid(int curve_id)
2700 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2701 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2702 static int nid_list[26] =
2705 NID_sect163k1, /* sect163k1 (1) */
2706 NID_sect163r1, /* sect163r1 (2) */
2707 NID_sect163r2, /* sect163r2 (3) */
2708 NID_sect193r1, /* sect193r1 (4) */
2709 NID_sect193r2, /* sect193r2 (5) */
2710 NID_sect233k1, /* sect233k1 (6) */
2711 NID_sect233r1, /* sect233r1 (7) */
2712 NID_sect239k1, /* sect239k1 (8) */
2713 NID_sect283k1, /* sect283k1 (9) */
2714 NID_sect283r1, /* sect283r1 (10) */
2715 NID_sect409k1, /* sect409k1 (11) */
2716 NID_sect409r1, /* sect409r1 (12) */
2717 NID_sect571k1, /* sect571k1 (13) */
2718 NID_sect571r1, /* sect571r1 (14) */
2719 NID_secp160k1, /* secp160k1 (15) */
2720 NID_secp160r1, /* secp160r1 (16) */
2721 NID_secp160r2, /* secp160r2 (17) */
2722 NID_secp192k1, /* secp192k1 (18) */
2723 NID_X9_62_prime192v1, /* secp192r1 (19) */
2724 NID_secp224k1, /* secp224k1 (20) */
2725 NID_secp224r1, /* secp224r1 (21) */
2726 NID_secp256k1, /* secp256k1 (22) */
2727 NID_X9_62_prime256v1, /* secp256r1 (23) */
2728 NID_secp384r1, /* secp384r1 (24) */
2729 NID_secp521r1 /* secp521r1 (25) */
2732 if ((curve_id < 1) || (curve_id > 25)) return 0;
2734 return nid_list[curve_id];
2738 /* Check to see if handshake is full or resumed. Usually this is just a
2739 * case of checking to see if a cache hit has occurred. In the case of
2740 * session tickets we have to check the next message to be sure.
2743 #ifndef OPENSSL_NO_TLSEXT
2744 int ssl3_check_finished(SSL *s)
2748 /* If we have no ticket or session ID is non-zero length (a match of
2749 * a non-zero session length would never reach here) it cannot be a
2752 if (!s->session->tlsext_tick || s->session->session_id_length)
2754 /* this function is called when we really expect a Certificate
2755 * message, so permit appropriate message length */
2756 n=s->method->ssl_get_message(s,
2762 if (!ok) return((int)n);
2763 s->s3->tmp.reuse_message = 1;
2764 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2765 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))
2772 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey)
2775 #ifndef OPENSSL_NO_ENGINE
2776 if (s->ctx->client_cert_engine)
2778 i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s,
2779 SSL_get_client_CA_list(s),
2780 px509, ppkey, NULL, NULL, NULL);
2785 if (s->ctx->client_cert_cb)
2786 i = s->ctx->client_cert_cb(s,px509,ppkey);