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>
133 #ifndef OPENSSL_NO_DH
134 #include <openssl/dh.h>
136 #include <openssl/bn.h>
138 static SSL_METHOD *ssl3_get_client_method(int ver);
139 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
140 #ifndef OPENSSL_NO_TLSEXT
141 static int ssl3_check_finished(SSL *s);
144 #ifndef OPENSSL_NO_ECDH
145 static int curve_id2nid(int curve_id);
146 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
149 static SSL_METHOD *ssl3_get_client_method(int ver)
151 if (ver == SSL3_VERSION)
152 return(SSLv3_client_method());
157 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
158 ssl_undefined_function,
160 ssl3_get_client_method)
162 int ssl3_connect(SSL *s)
165 unsigned long Time=(unsigned long)time(NULL),l;
167 void (*cb)(const SSL *ssl,int type,int val)=NULL;
169 int new_state,state,skip=0;;
171 RAND_add(&Time,sizeof(Time),0);
175 if (s->info_callback != NULL)
177 else if (s->ctx->info_callback != NULL)
178 cb=s->ctx->info_callback;
181 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
189 case SSL_ST_RENEGOTIATE:
191 s->state=SSL_ST_CONNECT;
192 s->ctx->stats.sess_connect_renegotiate++;
196 case SSL_ST_BEFORE|SSL_ST_CONNECT:
197 case SSL_ST_OK|SSL_ST_CONNECT:
200 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
202 if ((s->version & 0xff00 ) != 0x0300)
204 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
209 /* s->version=SSL3_VERSION; */
210 s->type=SSL_ST_CONNECT;
212 if (s->init_buf == NULL)
214 if ((buf=BUF_MEM_new()) == NULL)
219 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
228 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
230 /* setup buffing BIO */
231 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
233 /* don't push the buffering BIO quite yet */
235 ssl3_init_finished_mac(s);
237 s->state=SSL3_ST_CW_CLNT_HELLO_A;
238 s->ctx->stats.sess_connect++;
242 case SSL3_ST_CW_CLNT_HELLO_A:
243 case SSL3_ST_CW_CLNT_HELLO_B:
246 ret=ssl3_client_hello(s);
247 if (ret <= 0) goto end;
248 s->state=SSL3_ST_CR_SRVR_HELLO_A;
251 /* turn on buffering for the next lot of output */
252 if (s->bbio != s->wbio)
253 s->wbio=BIO_push(s->bbio,s->wbio);
257 case SSL3_ST_CR_SRVR_HELLO_A:
258 case SSL3_ST_CR_SRVR_HELLO_B:
259 ret=ssl3_get_server_hello(s);
260 if (ret <= 0) goto end;
262 s->state=SSL3_ST_CR_FINISHED_A;
264 s->state=SSL3_ST_CR_CERT_A;
268 case SSL3_ST_CR_CERT_A:
269 case SSL3_ST_CR_CERT_B:
270 #ifndef OPENSSL_NO_TLSEXT
271 ret=ssl3_check_finished(s);
272 if (ret <= 0) goto end;
276 if (s->tlsext_ticket_expected)
277 s->state=SSL3_ST_CR_SESSION_TICKET_A;
279 s->state=SSL3_ST_CR_FINISHED_A;
284 /* Check if it is anon DH/ECDH */
285 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
287 ret=ssl3_get_server_certificate(s);
288 if (ret <= 0) goto end;
289 #ifndef OPENSSL_NO_TLSEXT
290 if (s->tlsext_status_expected)
291 s->state=SSL3_ST_CR_CERT_STATUS_A;
293 s->state=SSL3_ST_CR_KEY_EXCH_A;
298 s->state=SSL3_ST_CR_KEY_EXCH_A;
305 s->state=SSL3_ST_CR_KEY_EXCH_A;
310 case SSL3_ST_CR_KEY_EXCH_A:
311 case SSL3_ST_CR_KEY_EXCH_B:
312 ret=ssl3_get_key_exchange(s);
313 if (ret <= 0) goto end;
314 s->state=SSL3_ST_CR_CERT_REQ_A;
317 /* at this point we check that we have the
318 * required stuff from the server */
319 if (!ssl3_check_cert_and_algorithm(s))
326 case SSL3_ST_CR_CERT_REQ_A:
327 case SSL3_ST_CR_CERT_REQ_B:
328 ret=ssl3_get_certificate_request(s);
329 if (ret <= 0) goto end;
330 s->state=SSL3_ST_CR_SRVR_DONE_A;
334 case SSL3_ST_CR_SRVR_DONE_A:
335 case SSL3_ST_CR_SRVR_DONE_B:
336 ret=ssl3_get_server_done(s);
337 if (ret <= 0) goto end;
338 if (s->s3->tmp.cert_req)
339 s->state=SSL3_ST_CW_CERT_A;
341 s->state=SSL3_ST_CW_KEY_EXCH_A;
346 case SSL3_ST_CW_CERT_A:
347 case SSL3_ST_CW_CERT_B:
348 case SSL3_ST_CW_CERT_C:
349 case SSL3_ST_CW_CERT_D:
350 ret=ssl3_send_client_certificate(s);
351 if (ret <= 0) goto end;
352 s->state=SSL3_ST_CW_KEY_EXCH_A;
356 case SSL3_ST_CW_KEY_EXCH_A:
357 case SSL3_ST_CW_KEY_EXCH_B:
358 ret=ssl3_send_client_key_exchange(s);
359 if (ret <= 0) goto end;
360 l=s->s3->tmp.new_cipher->algorithms;
361 /* EAY EAY EAY need to check for DH fix cert
363 /* For TLS, cert_req is set to 2, so a cert chain
364 * of nothing is sent, but no verify packet is sent */
365 /* XXX: For now, we do not support client
366 * authentication in ECDH cipher suites with
367 * ECDH (rather than ECDSA) certificates.
368 * We need to skip the certificate verify
369 * message when client's ECDH public key is sent
370 * inside the client certificate.
372 if (s->s3->tmp.cert_req == 1)
374 s->state=SSL3_ST_CW_CERT_VRFY_A;
378 s->state=SSL3_ST_CW_CHANGE_A;
379 s->s3->change_cipher_spec=0;
385 case SSL3_ST_CW_CERT_VRFY_A:
386 case SSL3_ST_CW_CERT_VRFY_B:
387 ret=ssl3_send_client_verify(s);
388 if (ret <= 0) goto end;
389 s->state=SSL3_ST_CW_CHANGE_A;
391 s->s3->change_cipher_spec=0;
394 case SSL3_ST_CW_CHANGE_A:
395 case SSL3_ST_CW_CHANGE_B:
396 ret=ssl3_send_change_cipher_spec(s,
397 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
398 if (ret <= 0) goto end;
399 s->state=SSL3_ST_CW_FINISHED_A;
402 s->session->cipher=s->s3->tmp.new_cipher;
403 #ifdef OPENSSL_NO_COMP
404 s->session->compress_meth=0;
406 if (s->s3->tmp.new_compression == NULL)
407 s->session->compress_meth=0;
409 s->session->compress_meth=
410 s->s3->tmp.new_compression->id;
412 if (!s->method->ssl3_enc->setup_key_block(s))
418 if (!s->method->ssl3_enc->change_cipher_state(s,
419 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
427 case SSL3_ST_CW_FINISHED_A:
428 case SSL3_ST_CW_FINISHED_B:
429 ret=ssl3_send_finished(s,
430 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
431 s->method->ssl3_enc->client_finished_label,
432 s->method->ssl3_enc->client_finished_label_len);
433 if (ret <= 0) goto end;
434 s->state=SSL3_ST_CW_FLUSH;
437 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
440 s->s3->tmp.next_state=SSL_ST_OK;
441 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
444 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
445 s->s3->delay_buf_pop_ret=0;
450 #ifndef OPENSSL_NO_TLSEXT
451 /* Allow NewSessionTicket if ticket expected */
452 if (s->tlsext_ticket_expected)
453 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
457 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
462 #ifndef OPENSSL_NO_TLSEXT
463 case SSL3_ST_CR_SESSION_TICKET_A:
464 case SSL3_ST_CR_SESSION_TICKET_B:
465 ret=ssl3_get_new_session_ticket(s);
466 if (ret <= 0) goto end;
467 s->state=SSL3_ST_CR_FINISHED_A;
471 case SSL3_ST_CR_CERT_STATUS_A:
472 case SSL3_ST_CR_CERT_STATUS_B:
473 ret=ssl3_get_cert_status(s);
474 if (ret <= 0) goto end;
475 s->state=SSL3_ST_CR_KEY_EXCH_A;
480 case SSL3_ST_CR_FINISHED_A:
481 case SSL3_ST_CR_FINISHED_B:
483 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
484 SSL3_ST_CR_FINISHED_B);
485 if (ret <= 0) goto end;
488 s->state=SSL3_ST_CW_CHANGE_A;
494 case SSL3_ST_CW_FLUSH:
495 /* number of bytes to be flushed */
496 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
499 s->rwstate=SSL_WRITING;
500 num1=BIO_flush(s->wbio);
501 if (num1 <= 0) { ret= -1; goto end; }
502 s->rwstate=SSL_NOTHING;
505 s->state=s->s3->tmp.next_state;
509 /* clean a few things up */
510 ssl3_cleanup_key_block(s);
512 if (s->init_buf != NULL)
514 BUF_MEM_free(s->init_buf);
518 /* If we are not 'joining' the last two packets,
519 * remove the buffering now */
520 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
521 ssl_free_wbio_buffer(s);
522 /* else do it later in ssl3_write */
527 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
528 if (s->hit) s->ctx->stats.sess_hit++;
532 s->handshake_func=ssl3_connect;
533 s->ctx->stats.sess_connect_good++;
535 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
541 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
547 /* did we do anything */
548 if (!s->s3->tmp.reuse_message && !skip)
552 if ((ret=BIO_flush(s->wbio)) <= 0)
556 if ((cb != NULL) && (s->state != state))
560 cb(s,SSL_CB_CONNECT_LOOP,1);
571 cb(s,SSL_CB_CONNECT_EXIT,ret);
576 int ssl3_client_hello(SSL *s)
581 unsigned long Time,l;
582 #ifndef OPENSSL_NO_COMP
587 buf=(unsigned char *)s->init_buf->data;
588 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
590 if ((s->session == NULL) ||
591 (s->session->ssl_version != s->version) ||
592 (s->session->not_resumable))
594 if (!ssl_get_new_session(s,0))
597 /* else use the pre-loaded session */
599 p=s->s3->client_random;
600 Time=(unsigned long)time(NULL); /* Time */
602 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
605 /* Do the message type and length last */
608 *(p++)=s->version>>8;
609 *(p++)=s->version&0xff;
610 s->client_version=s->version;
613 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
620 i=s->session->session_id_length;
624 if (i > (int)sizeof(s->session->session_id))
626 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
629 memcpy(p,s->session->session_id,i);
633 /* Ciphers supported */
634 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
637 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
644 #ifdef OPENSSL_NO_COMP
647 if (s->ctx->comp_methods == NULL)
650 j=sk_SSL_COMP_num(s->ctx->comp_methods);
654 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
658 *(p++)=0; /* Add the NULL method */
659 #ifndef OPENSSL_NO_TLSEXT
660 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
662 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
668 *(d++)=SSL3_MT_CLIENT_HELLO;
671 s->state=SSL3_ST_CW_CLNT_HELLO_B;
672 /* number of bytes to write */
677 /* SSL3_ST_CW_CLNT_HELLO_B */
678 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
683 int ssl3_get_server_hello(SSL *s)
685 STACK_OF(SSL_CIPHER) *sk;
691 #ifndef OPENSSL_NO_COMP
695 n=s->method->ssl_get_message(s,
696 SSL3_ST_CR_SRVR_HELLO_A,
697 SSL3_ST_CR_SRVR_HELLO_B,
702 if (!ok) return((int)n);
704 if ( SSL_version(s) == DTLS1_VERSION)
706 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
708 if ( s->d1->send_cookie == 0)
710 s->s3->tmp.reuse_message = 1;
713 else /* already sent a cookie */
715 al=SSL_AD_UNEXPECTED_MESSAGE;
716 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
722 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
724 al=SSL_AD_UNEXPECTED_MESSAGE;
725 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
729 d=p=(unsigned char *)s->init_msg;
731 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
733 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
734 s->version=(s->version&0xff00)|p[1];
735 al=SSL_AD_PROTOCOL_VERSION;
740 /* load the server hello data */
741 /* load the server random */
742 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
745 /* get the session-id */
748 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
750 al=SSL_AD_ILLEGAL_PARAMETER;
751 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
755 if (j != 0 && j == s->session->session_id_length
756 && memcmp(p,s->session->session_id,j) == 0)
758 if(s->sid_ctx_length != s->session->sid_ctx_length
759 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
761 /* actually a client application bug */
762 al=SSL_AD_ILLEGAL_PARAMETER;
763 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
768 else /* a miss or crap from the other end */
770 /* If we were trying for session-id reuse, make a new
771 * SSL_SESSION so we don't stuff up other people */
773 if (s->session->session_id_length > 0)
775 if (!ssl_get_new_session(s,0))
777 al=SSL_AD_INTERNAL_ERROR;
781 s->session->session_id_length=j;
782 memcpy(s->session->session_id,p,j); /* j could be 0 */
785 c=ssl_get_cipher_by_char(s,p);
789 al=SSL_AD_ILLEGAL_PARAMETER;
790 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
793 p+=ssl_put_cipher_by_char(s,NULL,NULL);
795 sk=ssl_get_ciphers_by_id(s);
796 i=sk_SSL_CIPHER_find(sk,c);
799 /* we did not say we would use this cipher */
800 al=SSL_AD_ILLEGAL_PARAMETER;
801 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
805 /* Depending on the session caching (internal/external), the cipher
806 and/or cipher_id values may not be set. Make sure that
807 cipher_id is set and use it for comparison. */
808 if (s->session->cipher)
809 s->session->cipher_id = s->session->cipher->id;
810 if (s->hit && (s->session->cipher_id != c->id))
813 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
815 al=SSL_AD_ILLEGAL_PARAMETER;
816 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
820 s->s3->tmp.new_cipher=c;
822 /* lets get the compression algorithm */
824 #ifdef OPENSSL_NO_COMP
827 al=SSL_AD_ILLEGAL_PARAMETER;
828 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
836 comp=ssl3_comp_find(s->ctx->comp_methods,j);
838 if ((j != 0) && (comp == NULL))
840 al=SSL_AD_ILLEGAL_PARAMETER;
841 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
846 s->s3->tmp.new_compression=comp;
849 #ifndef OPENSSL_NO_TLSEXT
851 if (s->version > SSL3_VERSION)
853 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
855 /* 'al' set by ssl_parse_serverhello_tlsext */
856 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
859 if (ssl_check_serverhello_tlsext(s) <= 0)
861 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
870 /* wrong packet length */
871 al=SSL_AD_DECODE_ERROR;
872 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
878 ssl3_send_alert(s,SSL3_AL_FATAL,al);
883 int ssl3_get_server_certificate(SSL *s)
886 unsigned long n,nc,llen,l;
888 const unsigned char *q,*p;
890 STACK_OF(X509) *sk=NULL;
893 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
895 n=s->method->ssl_get_message(s,
902 if (!ok) return((int)n);
904 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
905 ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) &&
906 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
908 s->s3->tmp.reuse_message=1;
912 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
914 al=SSL_AD_UNEXPECTED_MESSAGE;
915 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
918 p=d=(unsigned char *)s->init_msg;
920 if ((sk=sk_X509_new_null()) == NULL)
922 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
929 al=SSL_AD_DECODE_ERROR;
930 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
933 for (nc=0; nc<llen; )
938 al=SSL_AD_DECODE_ERROR;
939 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
944 x=d2i_X509(NULL,&q,l);
947 al=SSL_AD_BAD_CERTIFICATE;
948 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
953 al=SSL_AD_DECODE_ERROR;
954 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
957 if (!sk_X509_push(sk,x))
959 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
967 i=ssl_verify_cert_chain(s,sk);
968 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
969 #ifndef OPENSSL_NO_KRB5
970 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
971 != (SSL_aKRB5|SSL_kKRB5)
972 #endif /* OPENSSL_NO_KRB5 */
975 al=ssl_verify_alarm_type(s->verify_result);
976 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
979 ERR_clear_error(); /* but we keep s->verify_result */
981 sc=ssl_sess_cert_new();
982 if (sc == NULL) goto err;
984 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
985 s->session->sess_cert=sc;
988 /* Inconsistency alert: cert_chain does include the peer's
989 * certificate, which we don't include in s3_srvr.c */
990 x=sk_X509_value(sk,0);
992 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
994 pkey=X509_get_pubkey(x);
996 /* VRS: allow null cert if auth == KRB5 */
997 need_cert = ((s->s3->tmp.new_cipher->algorithms
998 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
999 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
1002 printf("pkey,x = %p, %p\n", pkey,x);
1003 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1004 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
1005 s->s3->tmp.new_cipher->algorithms, need_cert);
1006 #endif /* KSSL_DEBUG */
1008 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1012 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1013 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1017 i=ssl_cert_type(x,pkey);
1018 if (need_cert && i < 0)
1022 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1023 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1029 sc->peer_cert_type=i;
1030 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1031 /* Why would the following ever happen?
1032 * We just created sc a couple of lines ago. */
1033 if (sc->peer_pkeys[i].x509 != NULL)
1034 X509_free(sc->peer_pkeys[i].x509);
1035 sc->peer_pkeys[i].x509=x;
1036 sc->peer_key= &(sc->peer_pkeys[i]);
1038 if (s->session->peer != NULL)
1039 X509_free(s->session->peer);
1040 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1045 sc->peer_cert_type=i;
1048 if (s->session->peer != NULL)
1049 X509_free(s->session->peer);
1050 s->session->peer=NULL;
1052 s->session->verify_result = s->verify_result;
1060 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1063 EVP_PKEY_free(pkey);
1065 sk_X509_pop_free(sk,X509_free);
1069 int ssl3_get_key_exchange(SSL *s)
1071 #ifndef OPENSSL_NO_RSA
1072 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1075 unsigned char *param,*p;
1076 int al,i,j,param_len,ok;
1078 EVP_PKEY *pkey=NULL;
1079 #ifndef OPENSSL_NO_RSA
1082 #ifndef OPENSSL_NO_DH
1085 #ifndef OPENSSL_NO_ECDH
1086 EC_KEY *ecdh = NULL;
1087 BN_CTX *bn_ctx = NULL;
1088 EC_POINT *srvr_ecpoint = NULL;
1090 int encoded_pt_len = 0;
1093 /* use same message size as in ssl3_get_certificate_request()
1094 * as ServerKeyExchange message may be skipped */
1095 n=s->method->ssl_get_message(s,
1096 SSL3_ST_CR_KEY_EXCH_A,
1097 SSL3_ST_CR_KEY_EXCH_B,
1102 if (!ok) return((int)n);
1104 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1106 s->s3->tmp.reuse_message=1;
1110 param=p=(unsigned char *)s->init_msg;
1112 if (s->session->sess_cert != NULL)
1114 #ifndef OPENSSL_NO_RSA
1115 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1117 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1118 s->session->sess_cert->peer_rsa_tmp=NULL;
1121 #ifndef OPENSSL_NO_DH
1122 if (s->session->sess_cert->peer_dh_tmp)
1124 DH_free(s->session->sess_cert->peer_dh_tmp);
1125 s->session->sess_cert->peer_dh_tmp=NULL;
1128 #ifndef OPENSSL_NO_ECDH
1129 if (s->session->sess_cert->peer_ecdh_tmp)
1131 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1132 s->session->sess_cert->peer_ecdh_tmp=NULL;
1138 s->session->sess_cert=ssl_sess_cert_new();
1142 alg=s->s3->tmp.new_cipher->algorithms;
1143 EVP_MD_CTX_init(&md_ctx);
1145 #ifndef OPENSSL_NO_RSA
1148 if ((rsa=RSA_new()) == NULL)
1150 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1157 al=SSL_AD_DECODE_ERROR;
1158 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1161 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1163 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1172 al=SSL_AD_DECODE_ERROR;
1173 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1176 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1178 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1184 /* this should be because we are using an export cipher */
1186 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1189 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1192 s->session->sess_cert->peer_rsa_tmp=rsa;
1195 #else /* OPENSSL_NO_RSA */
1199 #ifndef OPENSSL_NO_DH
1200 else if (alg & SSL_kEDH)
1202 if ((dh=DH_new()) == NULL)
1204 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1211 al=SSL_AD_DECODE_ERROR;
1212 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1215 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1217 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1226 al=SSL_AD_DECODE_ERROR;
1227 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1230 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1232 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1241 al=SSL_AD_DECODE_ERROR;
1242 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1245 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1247 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1253 #ifndef OPENSSL_NO_RSA
1255 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1260 #ifndef OPENSSL_NO_DSA
1261 else if (alg & SSL_aDSS)
1262 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1264 /* else anonymous DH, so no certificate or pkey. */
1266 s->session->sess_cert->peer_dh_tmp=dh;
1269 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1271 al=SSL_AD_ILLEGAL_PARAMETER;
1272 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1275 #endif /* !OPENSSL_NO_DH */
1277 #ifndef OPENSSL_NO_ECDH
1278 else if (alg & SSL_kECDHE)
1281 const EC_GROUP *group;
1283 if ((ecdh=EC_KEY_new()) == NULL)
1285 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1289 /* Extract elliptic curve parameters and the
1290 * server's ephemeral ECDH public key.
1291 * Keep accumulating lengths of various components in
1292 * param_len and make sure it never exceeds n.
1295 /* XXX: For now we only support named (not generic) curves
1296 * and the ECParameters in this case is just three bytes.
1299 if ((param_len > n) ||
1300 (*p != NAMED_CURVE_TYPE) ||
1301 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1303 al=SSL_AD_INTERNAL_ERROR;
1304 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1308 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1311 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1314 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1316 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1319 EC_GROUP_free(ngroup);
1321 group = EC_KEY_get0_group(ecdh);
1323 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1324 (EC_GROUP_get_degree(group) > 163))
1326 al=SSL_AD_EXPORT_RESTRICTION;
1327 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1333 /* Next, get the encoded ECPoint */
1334 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1335 ((bn_ctx = BN_CTX_new()) == NULL))
1337 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1341 encoded_pt_len = *p; /* length of encoded point */
1343 param_len += (1 + encoded_pt_len);
1344 if ((param_len > n) ||
1345 (EC_POINT_oct2point(group, srvr_ecpoint,
1346 p, encoded_pt_len, bn_ctx) == 0))
1348 al=SSL_AD_DECODE_ERROR;
1349 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1356 /* The ECC/TLS specification does not mention
1357 * the use of DSA to sign ECParameters in the server
1358 * key exchange message. We do support RSA and ECDSA.
1361 #ifndef OPENSSL_NO_RSA
1362 else if (alg & SSL_aRSA)
1363 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1365 #ifndef OPENSSL_NO_ECDSA
1366 else if (alg & SSL_aECDSA)
1367 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1369 /* else anonymous ECDH, so no certificate or pkey. */
1370 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1371 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1373 BN_CTX_free(bn_ctx);
1374 EC_POINT_free(srvr_ecpoint);
1375 srvr_ecpoint = NULL;
1377 else if (alg & SSL_kECDH)
1379 al=SSL_AD_UNEXPECTED_MESSAGE;
1380 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1383 #endif /* !OPENSSL_NO_ECDH */
1386 al=SSL_AD_HANDSHAKE_FAILURE;
1387 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1392 /* p points to the next byte, there are 'n' bytes left */
1394 /* if it was signed, check the signature */
1399 j=EVP_PKEY_size(pkey);
1401 if ((i != n) || (n > j) || (n <= 0))
1403 /* wrong packet length */
1404 al=SSL_AD_DECODE_ERROR;
1405 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1409 #ifndef OPENSSL_NO_RSA
1410 if (pkey->type == EVP_PKEY_RSA)
1416 for (num=2; num > 0; num--)
1418 EVP_DigestInit_ex(&md_ctx,(num == 2)
1419 ?s->ctx->md5:s->ctx->sha1, NULL);
1420 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1421 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1422 EVP_DigestUpdate(&md_ctx,param,param_len);
1423 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1427 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1431 al=SSL_AD_DECRYPT_ERROR;
1432 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1438 al=SSL_AD_DECRYPT_ERROR;
1439 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1445 #ifndef OPENSSL_NO_DSA
1446 if (pkey->type == EVP_PKEY_DSA)
1449 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1450 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1451 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1452 EVP_VerifyUpdate(&md_ctx,param,param_len);
1453 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1456 al=SSL_AD_DECRYPT_ERROR;
1457 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1463 #ifndef OPENSSL_NO_ECDSA
1464 if (pkey->type == EVP_PKEY_EC)
1466 /* let's do ECDSA */
1467 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1468 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1469 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1470 EVP_VerifyUpdate(&md_ctx,param,param_len);
1471 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1474 al=SSL_AD_DECRYPT_ERROR;
1475 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1482 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1488 /* still data left over */
1489 if (!(alg & SSL_aNULL))
1491 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1496 al=SSL_AD_DECODE_ERROR;
1497 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1501 EVP_PKEY_free(pkey);
1502 EVP_MD_CTX_cleanup(&md_ctx);
1505 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1507 EVP_PKEY_free(pkey);
1508 #ifndef OPENSSL_NO_RSA
1512 #ifndef OPENSSL_NO_DH
1516 #ifndef OPENSSL_NO_ECDH
1517 BN_CTX_free(bn_ctx);
1518 EC_POINT_free(srvr_ecpoint);
1522 EVP_MD_CTX_cleanup(&md_ctx);
1526 int ssl3_get_certificate_request(SSL *s)
1529 unsigned long n,nc,l;
1530 unsigned int llen,ctype_num,i;
1532 const unsigned char *p,*q;
1534 STACK_OF(X509_NAME) *ca_sk=NULL;
1536 n=s->method->ssl_get_message(s,
1537 SSL3_ST_CR_CERT_REQ_A,
1538 SSL3_ST_CR_CERT_REQ_B,
1543 if (!ok) return((int)n);
1545 s->s3->tmp.cert_req=0;
1547 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1549 s->s3->tmp.reuse_message=1;
1553 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1555 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1556 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1560 /* TLS does not like anon-DH with client cert */
1561 if (s->version > SSL3_VERSION)
1563 l=s->s3->tmp.new_cipher->algorithms;
1566 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1567 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1572 p=d=(unsigned char *)s->init_msg;
1574 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1576 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1580 /* get the certificate types */
1582 if (ctype_num > SSL3_CT_NUMBER)
1583 ctype_num=SSL3_CT_NUMBER;
1584 for (i=0; i<ctype_num; i++)
1585 s->s3->tmp.ctype[i]= p[i];
1588 /* get the CA RDNs */
1593 out=fopen("/tmp/vsign.der","w");
1594 fwrite(p,1,llen,out);
1599 if ((llen+ctype_num+2+1) != n)
1601 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1602 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1606 for (nc=0; nc<llen; )
1609 if ((l+nc+2) > llen)
1611 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1612 goto cont; /* netscape bugs */
1613 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1614 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1620 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1622 /* If netscape tolerance is on, ignore errors */
1623 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1627 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1628 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1635 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1636 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1639 if (!sk_X509_NAME_push(ca_sk,xn))
1641 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1655 /* we should setup a certificate to return.... */
1656 s->s3->tmp.cert_req=1;
1657 s->s3->tmp.ctype_num=ctype_num;
1658 if (s->s3->tmp.ca_names != NULL)
1659 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1660 s->s3->tmp.ca_names=ca_sk;
1665 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1669 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1671 return(X509_NAME_cmp(*a,*b));
1673 #ifndef OPENSSL_NO_TLSEXT
1674 int ssl3_get_new_session_ticket(SSL *s)
1676 int ok,al,ret=0, ticklen;
1678 const unsigned char *p;
1681 n=s->method->ssl_get_message(s,
1682 SSL3_ST_CR_SESSION_TICKET_A,
1683 SSL3_ST_CR_SESSION_TICKET_B,
1691 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1693 s->s3->tmp.reuse_message=1;
1696 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1698 al=SSL_AD_UNEXPECTED_MESSAGE;
1699 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1704 /* need at least ticket_lifetime_hint + ticket length */
1705 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1706 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1709 p=d=(unsigned char *)s->init_msg;
1710 n2l(p, s->session->tlsext_tick_lifetime_hint);
1712 /* ticket_lifetime_hint + ticket_length + ticket */
1713 if (ticklen + 6 != n)
1715 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1716 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1719 if (s->session->tlsext_tick)
1721 OPENSSL_free(s->session->tlsext_tick);
1722 s->session->tlsext_ticklen = 0;
1724 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1725 if (!s->session->tlsext_tick)
1727 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1730 memcpy(s->session->tlsext_tick, p, ticklen);
1731 s->session->tlsext_ticklen = ticklen;
1736 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1741 int ssl3_get_cert_status(SSL *s)
1744 unsigned long resplen;
1746 const unsigned char *p;
1748 n=s->method->ssl_get_message(s,
1749 SSL3_ST_CR_CERT_STATUS_A,
1750 SSL3_ST_CR_CERT_STATUS_B,
1751 SSL3_MT_CERTIFICATE_STATUS,
1755 if (!ok) return((int)n);
1758 /* need at least status type + length */
1759 al = SSL_AD_DECODE_ERROR;
1760 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1763 p = (unsigned char *)s->init_msg;
1764 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1766 al = SSL_AD_DECODE_ERROR;
1767 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1771 if (resplen + 4 != n)
1773 al = SSL_AD_DECODE_ERROR;
1774 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1777 if (s->tlsext_ocsp_resp)
1778 OPENSSL_free(s->tlsext_ocsp_resp);
1779 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1780 if (!s->tlsext_ocsp_resp)
1782 al = SSL_AD_INTERNAL_ERROR;
1783 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1786 s->tlsext_ocsp_resplen = resplen;
1787 if (s->ctx->tlsext_status_cb)
1790 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1793 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1794 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1799 al = SSL_AD_INTERNAL_ERROR;
1800 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1806 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1811 int ssl3_get_server_done(SSL *s)
1816 n=s->method->ssl_get_message(s,
1817 SSL3_ST_CR_SRVR_DONE_A,
1818 SSL3_ST_CR_SRVR_DONE_B,
1819 SSL3_MT_SERVER_DONE,
1820 30, /* should be very small, like 0 :-) */
1823 if (!ok) return((int)n);
1826 /* should contain no data */
1827 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1828 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1836 int ssl3_send_client_key_exchange(SSL *s)
1838 unsigned char *p,*d;
1841 #ifndef OPENSSL_NO_RSA
1843 EVP_PKEY *pkey=NULL;
1845 #ifndef OPENSSL_NO_KRB5
1847 #endif /* OPENSSL_NO_KRB5 */
1848 #ifndef OPENSSL_NO_ECDH
1849 EC_KEY *clnt_ecdh = NULL;
1850 const EC_POINT *srvr_ecpoint = NULL;
1851 EVP_PKEY *srvr_pub_pkey = NULL;
1852 unsigned char *encodedPoint = NULL;
1853 int encoded_pt_len = 0;
1854 BN_CTX * bn_ctx = NULL;
1857 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1859 d=(unsigned char *)s->init_buf->data;
1862 l=s->s3->tmp.new_cipher->algorithms;
1864 /* Fool emacs indentation */
1866 #ifndef OPENSSL_NO_RSA
1867 else if (l & SSL_kRSA)
1870 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1872 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1873 rsa=s->session->sess_cert->peer_rsa_tmp;
1876 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1877 if ((pkey == NULL) ||
1878 (pkey->type != EVP_PKEY_RSA) ||
1879 (pkey->pkey.rsa == NULL))
1881 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1885 EVP_PKEY_free(pkey);
1888 tmp_buf[0]=s->client_version>>8;
1889 tmp_buf[1]=s->client_version&0xff;
1890 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1893 s->session->master_key_length=sizeof tmp_buf;
1896 /* Fix buf for TLS and beyond */
1897 if (s->version > SSL3_VERSION)
1899 n=RSA_public_encrypt(sizeof tmp_buf,
1900 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1902 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1903 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1907 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1911 /* Fix buf for TLS and beyond */
1912 if (s->version > SSL3_VERSION)
1918 s->session->master_key_length=
1919 s->method->ssl3_enc->generate_master_secret(s,
1920 s->session->master_key,
1921 tmp_buf,sizeof tmp_buf);
1922 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1925 #ifndef OPENSSL_NO_KRB5
1926 else if (l & SSL_kKRB5)
1928 krb5_error_code krb5rc;
1929 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1930 /* krb5_data krb5_ap_req; */
1931 krb5_data *enc_ticket;
1932 krb5_data authenticator, *authp = NULL;
1933 EVP_CIPHER_CTX ciph_ctx;
1934 EVP_CIPHER *enc = NULL;
1935 unsigned char iv[EVP_MAX_IV_LENGTH];
1936 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1937 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1938 + EVP_MAX_IV_LENGTH];
1939 int padl, outl = sizeof(epms);
1941 EVP_CIPHER_CTX_init(&ciph_ctx);
1944 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1946 #endif /* KSSL_DEBUG */
1950 if (KRB5SENDAUTH) authp = &authenticator;
1951 #endif /* KRB5SENDAUTH */
1953 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1955 enc = kssl_map_enc(kssl_ctx->enctype);
1960 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1961 if (krb5rc && kssl_err.text)
1962 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1964 #endif /* KSSL_DEBUG */
1968 ssl3_send_alert(s,SSL3_AL_FATAL,
1969 SSL_AD_HANDSHAKE_FAILURE);
1970 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1975 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1976 ** in place of RFC 2712 KerberosWrapper, as in:
1978 ** Send ticket (copy to *p, set n = length)
1979 ** n = krb5_ap_req.length;
1980 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1981 ** if (krb5_ap_req.data)
1982 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1984 ** Now using real RFC 2712 KerberosWrapper
1985 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1986 ** Note: 2712 "opaque" types are here replaced
1987 ** with a 2-byte length followed by the value.
1989 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1990 ** Where "xx xx" = length bytes. Shown here with
1991 ** optional authenticator omitted.
1994 /* KerberosWrapper.Ticket */
1995 s2n(enc_ticket->length,p);
1996 memcpy(p, enc_ticket->data, enc_ticket->length);
1997 p+= enc_ticket->length;
1998 n = enc_ticket->length + 2;
2000 /* KerberosWrapper.Authenticator */
2001 if (authp && authp->length)
2003 s2n(authp->length,p);
2004 memcpy(p, authp->data, authp->length);
2006 n+= authp->length + 2;
2014 s2n(0,p);/* null authenticator length */
2018 tmp_buf[0]=s->client_version>>8;
2019 tmp_buf[1]=s->client_version&0xff;
2020 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2023 /* 20010420 VRS. Tried it this way; failed.
2024 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2025 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2026 ** kssl_ctx->length);
2027 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2030 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2031 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2033 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2035 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2037 if (outl > sizeof epms)
2039 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2042 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2044 /* KerberosWrapper.EncryptedPreMasterSecret */
2046 memcpy(p, epms, outl);
2050 s->session->master_key_length=
2051 s->method->ssl3_enc->generate_master_secret(s,
2052 s->session->master_key,
2053 tmp_buf, sizeof tmp_buf);
2055 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2056 OPENSSL_cleanse(epms, outl);
2059 #ifndef OPENSSL_NO_DH
2060 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2062 DH *dh_srvr,*dh_clnt;
2064 if (s->session->sess_cert->peer_dh_tmp != NULL)
2065 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2068 /* we get them from the cert */
2069 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2070 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2074 /* generate a new random key */
2075 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2077 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2080 if (!DH_generate_key(dh_clnt))
2082 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2086 /* use the 'p' output buffer for the DH key, but
2087 * make sure to clear it out afterwards */
2089 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2093 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2097 /* generate master key from the result */
2098 s->session->master_key_length=
2099 s->method->ssl3_enc->generate_master_secret(s,
2100 s->session->master_key,p,n);
2104 /* send off the data */
2105 n=BN_num_bytes(dh_clnt->pub_key);
2107 BN_bn2bin(dh_clnt->pub_key,p);
2112 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2116 #ifndef OPENSSL_NO_ECDH
2117 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2119 const EC_GROUP *srvr_group = NULL;
2121 int ecdh_clnt_cert = 0;
2124 /* Did we send out the client's
2125 * ECDH share for use in premaster
2126 * computation as part of client certificate?
2127 * If so, set ecdh_clnt_cert to 1.
2129 if ((l & SSL_kECDH) && (s->cert != NULL))
2131 /* XXX: For now, we do not support client
2132 * authentication using ECDH certificates.
2133 * To add such support, one needs to add
2134 * code that checks for appropriate
2135 * conditions and sets ecdh_clnt_cert to 1.
2136 * For example, the cert have an ECC
2137 * key on the same curve as the server's
2138 * and the key should be authorized for
2141 * One also needs to add code in ssl3_connect
2142 * to skip sending the certificate verify
2145 * if ((s->cert->key->privatekey != NULL) &&
2146 * (s->cert->key->privatekey->type ==
2147 * EVP_PKEY_EC) && ...)
2148 * ecdh_clnt_cert = 1;
2152 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2154 tkey = s->session->sess_cert->peer_ecdh_tmp;
2158 /* Get the Server Public Key from Cert */
2159 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2160 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2161 if ((srvr_pub_pkey == NULL) ||
2162 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2163 (srvr_pub_pkey->pkey.ec == NULL))
2165 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2166 ERR_R_INTERNAL_ERROR);
2170 tkey = srvr_pub_pkey->pkey.ec;
2173 srvr_group = EC_KEY_get0_group(tkey);
2174 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2176 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2178 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2179 ERR_R_INTERNAL_ERROR);
2183 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2185 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2189 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2191 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2196 /* Reuse key info from our certificate
2197 * We only need our private key to perform
2198 * the ECDH computation.
2200 const BIGNUM *priv_key;
2201 tkey = s->cert->key->privatekey->pkey.ec;
2202 priv_key = EC_KEY_get0_private_key(tkey);
2203 if (priv_key == NULL)
2205 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2208 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2210 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2216 /* Generate a new ECDH key pair */
2217 if (!(EC_KEY_generate_key(clnt_ecdh)))
2219 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2224 /* use the 'p' output buffer for the ECDH key, but
2225 * make sure to clear it out afterwards
2228 field_size = EC_GROUP_get_degree(srvr_group);
2229 if (field_size <= 0)
2231 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2235 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2238 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2243 /* generate master key from the result */
2244 s->session->master_key_length = s->method->ssl3_enc \
2245 -> generate_master_secret(s,
2246 s->session->master_key,
2249 memset(p, 0, n); /* clean up */
2253 /* Send empty client key exch message */
2258 /* First check the size of encoding and
2259 * allocate memory accordingly.
2262 EC_POINT_point2oct(srvr_group,
2263 EC_KEY_get0_public_key(clnt_ecdh),
2264 POINT_CONVERSION_UNCOMPRESSED,
2267 encodedPoint = (unsigned char *)
2268 OPENSSL_malloc(encoded_pt_len *
2269 sizeof(unsigned char));
2270 bn_ctx = BN_CTX_new();
2271 if ((encodedPoint == NULL) ||
2274 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2278 /* Encode the public key */
2279 n = EC_POINT_point2oct(srvr_group,
2280 EC_KEY_get0_public_key(clnt_ecdh),
2281 POINT_CONVERSION_UNCOMPRESSED,
2282 encodedPoint, encoded_pt_len, bn_ctx);
2284 *p = n; /* length of encoded point */
2285 /* Encoded point will be copied here */
2287 /* copy the point */
2288 memcpy((unsigned char *)p, encodedPoint, n);
2289 /* increment n to account for length field */
2293 /* Free allocated memory */
2294 BN_CTX_free(bn_ctx);
2295 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2296 if (clnt_ecdh != NULL)
2297 EC_KEY_free(clnt_ecdh);
2298 EVP_PKEY_free(srvr_pub_pkey);
2300 #endif /* !OPENSSL_NO_ECDH */
2303 ssl3_send_alert(s, SSL3_AL_FATAL,
2304 SSL_AD_HANDSHAKE_FAILURE);
2305 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2306 ERR_R_INTERNAL_ERROR);
2310 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2313 s->state=SSL3_ST_CW_KEY_EXCH_B;
2314 /* number of bytes to write */
2319 /* SSL3_ST_CW_KEY_EXCH_B */
2320 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2322 #ifndef OPENSSL_NO_ECDH
2323 BN_CTX_free(bn_ctx);
2324 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2325 if (clnt_ecdh != NULL)
2326 EC_KEY_free(clnt_ecdh);
2327 EVP_PKEY_free(srvr_pub_pkey);
2332 int ssl3_send_client_verify(SSL *s)
2334 unsigned char *p,*d;
2335 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2337 #ifndef OPENSSL_NO_RSA
2341 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2345 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2347 d=(unsigned char *)s->init_buf->data;
2349 pkey=s->cert->key->privatekey;
2351 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2352 &(data[MD5_DIGEST_LENGTH]));
2354 #ifndef OPENSSL_NO_RSA
2355 if (pkey->type == EVP_PKEY_RSA)
2357 s->method->ssl3_enc->cert_verify_mac(s,
2358 &(s->s3->finish_dgst1),&(data[0]));
2359 if (RSA_sign(NID_md5_sha1, data,
2360 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2361 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2363 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2371 #ifndef OPENSSL_NO_DSA
2372 if (pkey->type == EVP_PKEY_DSA)
2374 if (!DSA_sign(pkey->save_type,
2375 &(data[MD5_DIGEST_LENGTH]),
2376 SHA_DIGEST_LENGTH,&(p[2]),
2377 (unsigned int *)&j,pkey->pkey.dsa))
2379 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2387 #ifndef OPENSSL_NO_ECDSA
2388 if (pkey->type == EVP_PKEY_EC)
2390 if (!ECDSA_sign(pkey->save_type,
2391 &(data[MD5_DIGEST_LENGTH]),
2392 SHA_DIGEST_LENGTH,&(p[2]),
2393 (unsigned int *)&j,pkey->pkey.ec))
2395 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2405 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2408 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2411 s->state=SSL3_ST_CW_CERT_VRFY_B;
2412 s->init_num=(int)n+4;
2415 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2420 int ssl3_send_client_certificate(SSL *s)
2423 EVP_PKEY *pkey=NULL;
2427 if (s->state == SSL3_ST_CW_CERT_A)
2429 if ((s->cert == NULL) ||
2430 (s->cert->key->x509 == NULL) ||
2431 (s->cert->key->privatekey == NULL))
2432 s->state=SSL3_ST_CW_CERT_B;
2434 s->state=SSL3_ST_CW_CERT_C;
2437 /* We need to get a client cert */
2438 if (s->state == SSL3_ST_CW_CERT_B)
2440 /* If we get an error, we need to
2441 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2442 * We then get retied later */
2444 if (s->ctx->client_cert_cb != NULL)
2445 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2448 s->rwstate=SSL_X509_LOOKUP;
2451 s->rwstate=SSL_NOTHING;
2452 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2454 s->state=SSL3_ST_CW_CERT_B;
2455 if ( !SSL_use_certificate(s,x509) ||
2456 !SSL_use_PrivateKey(s,pkey))
2462 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2465 if (x509 != NULL) X509_free(x509);
2466 if (pkey != NULL) EVP_PKEY_free(pkey);
2469 if (s->version == SSL3_VERSION)
2471 s->s3->tmp.cert_req=0;
2472 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2477 s->s3->tmp.cert_req=2;
2481 /* Ok, we have a cert */
2482 s->state=SSL3_ST_CW_CERT_C;
2485 if (s->state == SSL3_ST_CW_CERT_C)
2487 s->state=SSL3_ST_CW_CERT_D;
2488 l=ssl3_output_cert_chain(s,
2489 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2493 /* SSL3_ST_CW_CERT_D */
2494 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2497 #define has_bits(i,m) (((i)&(m)) == (m))
2499 int ssl3_check_cert_and_algorithm(SSL *s)
2503 EVP_PKEY *pkey=NULL;
2505 #ifndef OPENSSL_NO_RSA
2508 #ifndef OPENSSL_NO_DH
2512 sc=s->session->sess_cert;
2514 algs=s->s3->tmp.new_cipher->algorithms;
2516 /* we don't have a certificate */
2517 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2522 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2526 #ifndef OPENSSL_NO_RSA
2527 rsa=s->session->sess_cert->peer_rsa_tmp;
2529 #ifndef OPENSSL_NO_DH
2530 dh=s->session->sess_cert->peer_dh_tmp;
2533 /* This is the passed certificate */
2535 idx=sc->peer_cert_type;
2536 #ifndef OPENSSL_NO_ECDH
2537 if (idx == SSL_PKEY_ECC)
2539 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2540 s->s3->tmp.new_cipher) == 0)
2541 { /* check failed */
2542 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2551 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2552 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2553 EVP_PKEY_free(pkey);
2556 /* Check that we have a certificate if we require one */
2557 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2559 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2562 #ifndef OPENSSL_NO_DSA
2563 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2565 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2569 #ifndef OPENSSL_NO_RSA
2570 if ((algs & SSL_kRSA) &&
2571 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2573 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2577 #ifndef OPENSSL_NO_DH
2578 if ((algs & SSL_kEDH) &&
2579 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2581 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2584 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2586 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2589 #ifndef OPENSSL_NO_DSA
2590 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2592 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2598 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2600 #ifndef OPENSSL_NO_RSA
2601 if (algs & SSL_kRSA)
2604 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2606 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2612 #ifndef OPENSSL_NO_DH
2613 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2616 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2618 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2625 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2631 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2637 #ifndef OPENSSL_NO_ECDH
2638 /* This is the complement of nid2curve_id in s3_srvr.c. */
2639 static int curve_id2nid(int curve_id)
2641 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2642 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2643 static int nid_list[26] =
2646 NID_sect163k1, /* sect163k1 (1) */
2647 NID_sect163r1, /* sect163r1 (2) */
2648 NID_sect163r2, /* sect163r2 (3) */
2649 NID_sect193r1, /* sect193r1 (4) */
2650 NID_sect193r2, /* sect193r2 (5) */
2651 NID_sect233k1, /* sect233k1 (6) */
2652 NID_sect233r1, /* sect233r1 (7) */
2653 NID_sect239k1, /* sect239k1 (8) */
2654 NID_sect283k1, /* sect283k1 (9) */
2655 NID_sect283r1, /* sect283r1 (10) */
2656 NID_sect409k1, /* sect409k1 (11) */
2657 NID_sect409r1, /* sect409r1 (12) */
2658 NID_sect571k1, /* sect571k1 (13) */
2659 NID_sect571r1, /* sect571r1 (14) */
2660 NID_secp160k1, /* secp160k1 (15) */
2661 NID_secp160r1, /* secp160r1 (16) */
2662 NID_secp160r2, /* secp160r2 (17) */
2663 NID_secp192k1, /* secp192k1 (18) */
2664 NID_X9_62_prime192v1, /* secp192r1 (19) */
2665 NID_secp224k1, /* secp224k1 (20) */
2666 NID_secp224r1, /* secp224r1 (21) */
2667 NID_secp256k1, /* secp256k1 (22) */
2668 NID_X9_62_prime256v1, /* secp256r1 (23) */
2669 NID_secp384r1, /* secp384r1 (24) */
2670 NID_secp521r1 /* secp521r1 (25) */
2673 if ((curve_id < 1) || (curve_id > 25)) return 0;
2675 return nid_list[curve_id];
2679 /* Check to see if handshake is full or resumed. Usually this is just a
2680 * case of checking to see if a cache hit has occurred. In the case of
2681 * session tickets we have to check the next message to be sure.
2684 #ifndef OPENSSL_NO_TLSEXT
2685 static int ssl3_check_finished(SSL *s)
2689 /* If we have no ticket or session ID is non-zero length (a match of
2690 * a non-zero session length would never reach here) it cannot be a
2693 if (!s->session->tlsext_tick || s->session->session_id_length)
2695 /* this function is called when we really expect a Certificate
2696 * message, so permit appropriate message length */
2697 n=s->method->ssl_get_message(s,
2703 if (!ok) return((int)n);
2704 s->s3->tmp.reuse_message = 1;
2705 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2706 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))