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) 1998-2007 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.
124 /* ====================================================================
125 * Copyright 2005 Nokia. All rights reserved.
127 * The portions of the attached software ("Contribution") is developed by
128 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
131 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
132 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
133 * support (see RFC 4279) to OpenSSL.
135 * No patent licenses or other rights except those expressly stated in
136 * the OpenSSL open source license shall be deemed granted or received
137 * expressly, by implication, estoppel, or otherwise.
139 * No assurances are provided by Nokia that the Contribution does not
140 * infringe the patent or other intellectual property rights of any third
141 * party or that the license provides you with all the necessary rights
142 * to make use of the Contribution.
144 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
145 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
146 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
147 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
152 #include "ssl_locl.h"
153 #include "kssl_lcl.h"
154 #include <openssl/buffer.h>
155 #include <openssl/rand.h>
156 #include <openssl/objects.h>
157 #include <openssl/evp.h>
158 #include <openssl/md5.h>
159 #ifndef OPENSSL_NO_DH
160 #include <openssl/dh.h>
162 #include <openssl/bn.h>
164 static const SSL_METHOD *ssl3_get_client_method(int ver);
165 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
167 static const SSL_METHOD *ssl3_get_client_method(int ver)
169 if (ver == SSL3_VERSION)
170 return(SSLv3_client_method());
175 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
176 ssl_undefined_function,
178 ssl3_get_client_method)
180 int ssl3_connect(SSL *s)
183 unsigned long Time=(unsigned long)time(NULL);
185 void (*cb)(const SSL *ssl,int type,int val)=NULL;
187 int new_state,state,skip=0;;
189 RAND_add(&Time,sizeof(Time),0);
193 if (s->info_callback != NULL)
195 else if (s->ctx->info_callback != NULL)
196 cb=s->ctx->info_callback;
199 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
207 case SSL_ST_RENEGOTIATE:
209 s->state=SSL_ST_CONNECT;
210 s->ctx->stats.sess_connect_renegotiate++;
214 case SSL_ST_BEFORE|SSL_ST_CONNECT:
215 case SSL_ST_OK|SSL_ST_CONNECT:
218 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
220 if ((s->version & 0xff00 ) != 0x0300)
222 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
227 /* s->version=SSL3_VERSION; */
228 s->type=SSL_ST_CONNECT;
230 if (s->init_buf == NULL)
232 if ((buf=BUF_MEM_new()) == NULL)
237 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
246 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
248 /* setup buffing BIO */
249 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
251 /* don't push the buffering BIO quite yet */
253 ssl3_init_finished_mac(s);
255 s->state=SSL3_ST_CW_CLNT_HELLO_A;
256 s->ctx->stats.sess_connect++;
260 case SSL3_ST_CW_CLNT_HELLO_A:
261 case SSL3_ST_CW_CLNT_HELLO_B:
264 ret=ssl3_client_hello(s);
265 if (ret <= 0) goto end;
266 s->state=SSL3_ST_CR_SRVR_HELLO_A;
269 /* turn on buffering for the next lot of output */
270 if (s->bbio != s->wbio)
271 s->wbio=BIO_push(s->bbio,s->wbio);
275 case SSL3_ST_CR_SRVR_HELLO_A:
276 case SSL3_ST_CR_SRVR_HELLO_B:
277 ret=ssl3_get_server_hello(s);
278 if (ret <= 0) goto end;
281 s->state=SSL3_ST_CR_FINISHED_A;
283 s->state=SSL3_ST_CR_CERT_A;
287 case SSL3_ST_CR_CERT_A:
288 case SSL3_ST_CR_CERT_B:
289 /* Check if it is anon DH/ECDH */
291 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
292 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
294 ret=ssl3_get_server_certificate(s);
295 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CR_KEY_EXCH_A;
303 case SSL3_ST_CR_KEY_EXCH_A:
304 case SSL3_ST_CR_KEY_EXCH_B:
305 ret=ssl3_get_key_exchange(s);
306 if (ret <= 0) goto end;
307 s->state=SSL3_ST_CR_CERT_REQ_A;
310 /* at this point we check that we have the
311 * required stuff from the server */
312 if (!ssl3_check_cert_and_algorithm(s))
319 case SSL3_ST_CR_CERT_REQ_A:
320 case SSL3_ST_CR_CERT_REQ_B:
321 ret=ssl3_get_certificate_request(s);
322 if (ret <= 0) goto end;
323 s->state=SSL3_ST_CR_SRVR_DONE_A;
327 case SSL3_ST_CR_SRVR_DONE_A:
328 case SSL3_ST_CR_SRVR_DONE_B:
329 ret=ssl3_get_server_done(s);
330 if (ret <= 0) goto end;
331 if (s->s3->tmp.cert_req)
332 s->state=SSL3_ST_CW_CERT_A;
334 s->state=SSL3_ST_CW_KEY_EXCH_A;
339 case SSL3_ST_CW_CERT_A:
340 case SSL3_ST_CW_CERT_B:
341 case SSL3_ST_CW_CERT_C:
342 case SSL3_ST_CW_CERT_D:
343 ret=ssl3_send_client_certificate(s);
344 if (ret <= 0) goto end;
345 s->state=SSL3_ST_CW_KEY_EXCH_A;
349 case SSL3_ST_CW_KEY_EXCH_A:
350 case SSL3_ST_CW_KEY_EXCH_B:
351 ret=ssl3_send_client_key_exchange(s);
352 if (ret <= 0) goto end;
353 /* EAY EAY EAY need to check for DH fix cert
355 /* For TLS, cert_req is set to 2, so a cert chain
356 * of nothing is sent, but no verify packet is sent */
357 /* XXX: For now, we do not support client
358 * authentication in ECDH cipher suites with
359 * ECDH (rather than ECDSA) certificates.
360 * We need to skip the certificate verify
361 * message when client's ECDH public key is sent
362 * inside the client certificate.
364 if (s->s3->tmp.cert_req == 1)
366 s->state=SSL3_ST_CW_CERT_VRFY_A;
370 s->state=SSL3_ST_CW_CHANGE_A;
371 s->s3->change_cipher_spec=0;
377 case SSL3_ST_CW_CERT_VRFY_A:
378 case SSL3_ST_CW_CERT_VRFY_B:
379 ret=ssl3_send_client_verify(s);
380 if (ret <= 0) goto end;
381 s->state=SSL3_ST_CW_CHANGE_A;
383 s->s3->change_cipher_spec=0;
386 case SSL3_ST_CW_CHANGE_A:
387 case SSL3_ST_CW_CHANGE_B:
388 ret=ssl3_send_change_cipher_spec(s,
389 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
390 if (ret <= 0) goto end;
391 s->state=SSL3_ST_CW_FINISHED_A;
394 s->session->cipher=s->s3->tmp.new_cipher;
395 #ifdef OPENSSL_NO_COMP
396 s->session->compress_meth=0;
398 if (s->s3->tmp.new_compression == NULL)
399 s->session->compress_meth=0;
401 s->session->compress_meth=
402 s->s3->tmp.new_compression->id;
404 if (!s->method->ssl3_enc->setup_key_block(s))
410 if (!s->method->ssl3_enc->change_cipher_state(s,
411 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
419 case SSL3_ST_CW_FINISHED_A:
420 case SSL3_ST_CW_FINISHED_B:
421 ret=ssl3_send_finished(s,
422 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
423 s->method->ssl3_enc->client_finished_label,
424 s->method->ssl3_enc->client_finished_label_len);
425 if (ret <= 0) goto end;
426 s->state=SSL3_ST_CW_FLUSH;
429 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
432 s->s3->tmp.next_state=SSL_ST_OK;
433 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
436 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
437 s->s3->delay_buf_pop_ret=0;
442 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
447 case SSL3_ST_CR_FINISHED_A:
448 case SSL3_ST_CR_FINISHED_B:
450 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
451 SSL3_ST_CR_FINISHED_B);
452 if (ret <= 0) goto end;
455 s->state=SSL3_ST_CW_CHANGE_A;
461 case SSL3_ST_CW_FLUSH:
462 /* number of bytes to be flushed */
463 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
466 s->rwstate=SSL_WRITING;
467 num1=BIO_flush(s->wbio);
468 if (num1 <= 0) { ret= -1; goto end; }
469 s->rwstate=SSL_NOTHING;
472 s->state=s->s3->tmp.next_state;
476 /* clean a few things up */
477 ssl3_cleanup_key_block(s);
479 if (s->init_buf != NULL)
481 BUF_MEM_free(s->init_buf);
485 /* If we are not 'joining' the last two packets,
486 * remove the buffering now */
487 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
488 ssl_free_wbio_buffer(s);
489 /* else do it later in ssl3_write */
494 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
495 if (s->hit) s->ctx->stats.sess_hit++;
499 s->handshake_func=ssl3_connect;
500 s->ctx->stats.sess_connect_good++;
502 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
508 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
514 /* did we do anything */
515 if (!s->s3->tmp.reuse_message && !skip)
519 if ((ret=BIO_flush(s->wbio)) <= 0)
523 if ((cb != NULL) && (s->state != state))
527 cb(s,SSL_CB_CONNECT_LOOP,1);
538 cb(s,SSL_CB_CONNECT_EXIT,ret);
543 int ssl3_client_hello(SSL *s)
548 unsigned long Time,l;
549 #ifndef OPENSSL_NO_COMP
554 buf=(unsigned char *)s->init_buf->data;
555 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
557 if ((s->session == NULL) ||
558 (s->session->ssl_version != s->version) ||
559 (s->session->not_resumable))
561 if (!ssl_get_new_session(s,0))
564 /* else use the pre-loaded session */
566 p=s->s3->client_random;
567 Time=(unsigned long)time(NULL); /* Time */
569 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
572 /* Do the message type and length last */
575 *(p++)=s->version>>8;
576 *(p++)=s->version&0xff;
577 s->client_version=s->version;
580 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
587 i=s->session->session_id_length;
591 if (i > (int)sizeof(s->session->session_id))
593 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
596 memcpy(p,s->session->session_id,i);
600 /* Ciphers supported */
601 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
604 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
611 #ifdef OPENSSL_NO_COMP
615 if ((s->options & SSL_OP_NO_COMPRESSION)
616 || !s->ctx->comp_methods)
619 j=sk_SSL_COMP_num(s->ctx->comp_methods);
623 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
627 *(p++)=0; /* Add the NULL method */
628 #ifndef OPENSSL_NO_TLSEXT
629 if (ssl_prepare_clienthello_tlsext(s) <= 0)
631 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
634 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
636 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
643 *(d++)=SSL3_MT_CLIENT_HELLO;
646 s->state=SSL3_ST_CW_CLNT_HELLO_B;
647 /* number of bytes to write */
652 /* SSL3_ST_CW_CLNT_HELLO_B */
653 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
658 int ssl3_get_server_hello(SSL *s)
660 STACK_OF(SSL_CIPHER) *sk;
666 #ifndef OPENSSL_NO_COMP
670 n=s->method->ssl_get_message(s,
671 SSL3_ST_CR_SRVR_HELLO_A,
672 SSL3_ST_CR_SRVR_HELLO_B,
677 if (!ok) return((int)n);
679 if ( SSL_version(s) == DTLS1_VERSION)
681 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
683 if ( s->d1->send_cookie == 0)
685 s->s3->tmp.reuse_message = 1;
688 else /* already sent a cookie */
690 al=SSL_AD_UNEXPECTED_MESSAGE;
691 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
697 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
699 al=SSL_AD_UNEXPECTED_MESSAGE;
700 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
704 d=p=(unsigned char *)s->init_msg;
706 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
708 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
709 s->version=(s->version&0xff00)|p[1];
710 al=SSL_AD_PROTOCOL_VERSION;
715 /* load the server hello data */
716 /* load the server random */
717 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
720 /* get the session-id */
723 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
725 al=SSL_AD_ILLEGAL_PARAMETER;
726 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
730 if (j != 0 && j == s->session->session_id_length
731 && memcmp(p,s->session->session_id,j) == 0)
733 if(s->sid_ctx_length != s->session->sid_ctx_length
734 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
736 /* actually a client application bug */
737 al=SSL_AD_ILLEGAL_PARAMETER;
738 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
743 else /* a miss or crap from the other end */
745 /* If we were trying for session-id reuse, make a new
746 * SSL_SESSION so we don't stuff up other people */
748 if (s->session->session_id_length > 0)
750 if (!ssl_get_new_session(s,0))
752 al=SSL_AD_INTERNAL_ERROR;
756 s->session->session_id_length=j;
757 memcpy(s->session->session_id,p,j); /* j could be 0 */
760 c=ssl_get_cipher_by_char(s,p);
764 al=SSL_AD_ILLEGAL_PARAMETER;
765 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
768 p+=ssl_put_cipher_by_char(s,NULL,NULL);
770 sk=ssl_get_ciphers_by_id(s);
771 i=sk_SSL_CIPHER_find(sk,c);
774 /* we did not say we would use this cipher */
775 al=SSL_AD_ILLEGAL_PARAMETER;
776 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
780 /* Depending on the session caching (internal/external), the cipher
781 and/or cipher_id values may not be set. Make sure that
782 cipher_id is set and use it for comparison. */
783 if (s->session->cipher)
784 s->session->cipher_id = s->session->cipher->id;
785 if (s->hit && (s->session->cipher_id != c->id))
788 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
790 al=SSL_AD_ILLEGAL_PARAMETER;
791 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
795 s->s3->tmp.new_cipher=c;
797 /* lets get the compression algorithm */
799 #ifdef OPENSSL_NO_COMP
802 al=SSL_AD_ILLEGAL_PARAMETER;
803 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
808 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
811 comp=ssl3_comp_find(s->ctx->comp_methods,j);
813 if ((j != 0) && (comp == NULL))
815 al=SSL_AD_ILLEGAL_PARAMETER;
816 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
821 s->s3->tmp.new_compression=comp;
824 #ifndef OPENSSL_NO_TLSEXT
826 if (s->version > SSL3_VERSION)
828 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
830 /* 'al' set by ssl_parse_serverhello_tlsext */
831 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
834 if (ssl_check_serverhello_tlsext(s) <= 0)
836 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
844 /* wrong packet length */
845 al=SSL_AD_DECODE_ERROR;
846 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
852 ssl3_send_alert(s,SSL3_AL_FATAL,al);
857 int ssl3_get_server_certificate(SSL *s)
860 unsigned long n,nc,llen,l;
862 const unsigned char *q,*p;
864 STACK_OF(X509) *sk=NULL;
867 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
869 n=s->method->ssl_get_message(s,
876 if (!ok) return((int)n);
878 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
880 s->s3->tmp.reuse_message=1;
884 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
886 al=SSL_AD_UNEXPECTED_MESSAGE;
887 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
890 p=d=(unsigned char *)s->init_msg;
892 if ((sk=sk_X509_new_null()) == NULL)
894 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
901 al=SSL_AD_DECODE_ERROR;
902 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
905 for (nc=0; nc<llen; )
910 al=SSL_AD_DECODE_ERROR;
911 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
916 x=d2i_X509(NULL,&q,l);
919 al=SSL_AD_BAD_CERTIFICATE;
920 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
925 al=SSL_AD_DECODE_ERROR;
926 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
929 if (!sk_X509_push(sk,x))
931 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
939 i=ssl_verify_cert_chain(s,sk);
940 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
941 #ifndef OPENSSL_NO_KRB5
942 && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
943 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
944 #endif /* OPENSSL_NO_KRB5 */
947 al=ssl_verify_alarm_type(s->verify_result);
948 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
951 ERR_clear_error(); /* but we keep s->verify_result */
953 sc=ssl_sess_cert_new();
954 if (sc == NULL) goto err;
956 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
957 s->session->sess_cert=sc;
960 /* Inconsistency alert: cert_chain does include the peer's
961 * certificate, which we don't include in s3_srvr.c */
962 x=sk_X509_value(sk,0);
964 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
966 pkey=X509_get_pubkey(x);
968 /* VRS: allow null cert if auth == KRB5 */
969 need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) &&
970 (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5))
974 printf("pkey,x = %p, %p\n", pkey,x);
975 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
976 printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name,
977 s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert);
978 #endif /* KSSL_DEBUG */
980 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
984 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
985 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
989 i=ssl_cert_type(x,pkey);
990 if (need_cert && i < 0)
994 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
995 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1001 sc->peer_cert_type=i;
1002 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1003 /* Why would the following ever happen?
1004 * We just created sc a couple of lines ago. */
1005 if (sc->peer_pkeys[i].x509 != NULL)
1006 X509_free(sc->peer_pkeys[i].x509);
1007 sc->peer_pkeys[i].x509=x;
1008 sc->peer_key= &(sc->peer_pkeys[i]);
1010 if (s->session->peer != NULL)
1011 X509_free(s->session->peer);
1012 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1017 sc->peer_cert_type=i;
1020 if (s->session->peer != NULL)
1021 X509_free(s->session->peer);
1022 s->session->peer=NULL;
1024 s->session->verify_result = s->verify_result;
1032 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1035 EVP_PKEY_free(pkey);
1037 sk_X509_pop_free(sk,X509_free);
1041 int ssl3_get_key_exchange(SSL *s)
1043 #ifndef OPENSSL_NO_RSA
1044 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1047 unsigned char *param,*p;
1048 int al,i,j,param_len,ok;
1050 EVP_PKEY *pkey=NULL;
1051 #ifndef OPENSSL_NO_RSA
1054 #ifndef OPENSSL_NO_DH
1057 #ifndef OPENSSL_NO_ECDH
1058 EC_KEY *ecdh = NULL;
1059 BN_CTX *bn_ctx = NULL;
1060 EC_POINT *srvr_ecpoint = NULL;
1062 int encoded_pt_len = 0;
1065 /* use same message size as in ssl3_get_certificate_request()
1066 * as ServerKeyExchange message may be skipped */
1067 n=s->method->ssl_get_message(s,
1068 SSL3_ST_CR_KEY_EXCH_A,
1069 SSL3_ST_CR_KEY_EXCH_B,
1073 if (!ok) return((int)n);
1075 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1077 #ifndef OPENSSL_NO_PSK
1078 /* In plain PSK ciphersuite, ServerKeyExchange can be
1079 omitted if no identity hint is sent. Set
1080 session->sess_cert anyway to avoid problems
1082 if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)
1084 s->session->sess_cert=ssl_sess_cert_new();
1085 if (s->ctx->psk_identity_hint)
1086 OPENSSL_free(s->ctx->psk_identity_hint);
1087 s->ctx->psk_identity_hint = NULL;
1090 s->s3->tmp.reuse_message=1;
1094 param=p=(unsigned char *)s->init_msg;
1095 if (s->session->sess_cert != NULL)
1097 #ifndef OPENSSL_NO_RSA
1098 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1100 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1101 s->session->sess_cert->peer_rsa_tmp=NULL;
1104 #ifndef OPENSSL_NO_DH
1105 if (s->session->sess_cert->peer_dh_tmp)
1107 DH_free(s->session->sess_cert->peer_dh_tmp);
1108 s->session->sess_cert->peer_dh_tmp=NULL;
1111 #ifndef OPENSSL_NO_ECDH
1112 if (s->session->sess_cert->peer_ecdh_tmp)
1114 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1115 s->session->sess_cert->peer_ecdh_tmp=NULL;
1121 s->session->sess_cert=ssl_sess_cert_new();
1125 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1126 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
1127 EVP_MD_CTX_init(&md_ctx);
1129 #ifndef OPENSSL_NO_PSK
1130 if (alg_k & SSL_kPSK)
1132 char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1];
1134 al=SSL_AD_HANDSHAKE_FAILURE;
1137 /* Store PSK identity hint for later use, hint is used
1138 * in ssl3_send_client_key_exchange. Assume that the
1139 * maximum length of a PSK identity hint can be as
1140 * long as the maximum length of a PSK identity. */
1141 if (i > PSK_MAX_IDENTITY_LEN)
1143 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1144 SSL_R_DATA_LENGTH_TOO_LONG);
1149 al=SSL_AD_DECODE_ERROR;
1150 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,
1151 SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH);
1154 /* If received PSK identity hint contains NULL
1155 * characters, the hint is truncated from the first
1156 * NULL. p may not be ending with NULL, so create a
1157 * NULL-terminated string. */
1158 memcpy(tmp_id_hint, p, i);
1159 memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i);
1160 if (s->ctx->psk_identity_hint != NULL)
1161 OPENSSL_free(s->ctx->psk_identity_hint);
1162 s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint);
1163 if (s->ctx->psk_identity_hint == NULL)
1165 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
1173 #endif /* !OPENSSL_NO_PSK */
1174 #ifndef OPENSSL_NO_RSA
1175 if (alg_k & SSL_kRSA)
1177 if ((rsa=RSA_new()) == NULL)
1179 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1186 al=SSL_AD_DECODE_ERROR;
1187 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1190 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1192 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1201 al=SSL_AD_DECODE_ERROR;
1202 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1205 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1207 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1213 /* this should be because we are using an export cipher */
1214 if (alg_a & SSL_aRSA)
1215 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1218 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1221 s->session->sess_cert->peer_rsa_tmp=rsa;
1224 #else /* OPENSSL_NO_RSA */
1228 #ifndef OPENSSL_NO_DH
1229 else if (alg_k & SSL_kEDH)
1231 if ((dh=DH_new()) == NULL)
1233 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1240 al=SSL_AD_DECODE_ERROR;
1241 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1244 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1246 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1255 al=SSL_AD_DECODE_ERROR;
1256 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1259 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1261 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1270 al=SSL_AD_DECODE_ERROR;
1271 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1274 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1276 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1282 #ifndef OPENSSL_NO_RSA
1283 if (alg_a & SSL_aRSA)
1284 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1289 #ifndef OPENSSL_NO_DSA
1290 else if (alg_a & SSL_aDSS)
1291 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1293 /* else anonymous DH, so no certificate or pkey. */
1295 s->session->sess_cert->peer_dh_tmp=dh;
1298 else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd))
1300 al=SSL_AD_ILLEGAL_PARAMETER;
1301 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1304 #endif /* !OPENSSL_NO_DH */
1306 #ifndef OPENSSL_NO_ECDH
1307 else if (alg_k & SSL_kEECDH)
1310 const EC_GROUP *group;
1312 if ((ecdh=EC_KEY_new()) == NULL)
1314 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1318 /* Extract elliptic curve parameters and the
1319 * server's ephemeral ECDH public key.
1320 * Keep accumulating lengths of various components in
1321 * param_len and make sure it never exceeds n.
1324 /* XXX: For now we only support named (not generic) curves
1325 * and the ECParameters in this case is just three bytes.
1328 if ((param_len > n) ||
1329 (*p != NAMED_CURVE_TYPE) ||
1330 ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0))
1332 al=SSL_AD_INTERNAL_ERROR;
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1337 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1340 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1343 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1348 EC_GROUP_free(ngroup);
1350 group = EC_KEY_get0_group(ecdh);
1352 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1353 (EC_GROUP_get_degree(group) > 163))
1355 al=SSL_AD_EXPORT_RESTRICTION;
1356 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1362 /* Next, get the encoded ECPoint */
1363 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1364 ((bn_ctx = BN_CTX_new()) == NULL))
1366 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1370 encoded_pt_len = *p; /* length of encoded point */
1372 param_len += (1 + encoded_pt_len);
1373 if ((param_len > n) ||
1374 (EC_POINT_oct2point(group, srvr_ecpoint,
1375 p, encoded_pt_len, bn_ctx) == 0))
1377 al=SSL_AD_DECODE_ERROR;
1378 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1385 /* The ECC/TLS specification does not mention
1386 * the use of DSA to sign ECParameters in the server
1387 * key exchange message. We do support RSA and ECDSA.
1390 #ifndef OPENSSL_NO_RSA
1391 else if (alg_a & SSL_aRSA)
1392 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1394 #ifndef OPENSSL_NO_ECDSA
1395 else if (alg_a & SSL_aECDSA)
1396 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1398 /* else anonymous ECDH, so no certificate or pkey. */
1399 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1400 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1402 BN_CTX_free(bn_ctx);
1403 EC_POINT_free(srvr_ecpoint);
1404 srvr_ecpoint = NULL;
1408 al=SSL_AD_UNEXPECTED_MESSAGE;
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1412 #endif /* !OPENSSL_NO_ECDH */
1415 /* p points to the next byte, there are 'n' bytes left */
1417 /* if it was signed, check the signature */
1422 j=EVP_PKEY_size(pkey);
1424 if ((i != n) || (n > j) || (n <= 0))
1426 /* wrong packet length */
1427 al=SSL_AD_DECODE_ERROR;
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1432 #ifndef OPENSSL_NO_RSA
1433 if (pkey->type == EVP_PKEY_RSA)
1439 for (num=2; num > 0; num--)
1441 EVP_DigestInit_ex(&md_ctx,(num == 2)
1442 ?s->ctx->md5:s->ctx->sha1, NULL);
1443 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1444 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1445 EVP_DigestUpdate(&md_ctx,param,param_len);
1446 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1450 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1454 al=SSL_AD_DECRYPT_ERROR;
1455 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1461 al=SSL_AD_DECRYPT_ERROR;
1462 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1468 #ifndef OPENSSL_NO_DSA
1469 if (pkey->type == EVP_PKEY_DSA)
1472 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1473 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1474 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1475 EVP_VerifyUpdate(&md_ctx,param,param_len);
1476 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1479 al=SSL_AD_DECRYPT_ERROR;
1480 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1486 #ifndef OPENSSL_NO_ECDSA
1487 if (pkey->type == EVP_PKEY_EC)
1489 /* let's do ECDSA */
1490 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1491 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1492 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1493 EVP_VerifyUpdate(&md_ctx,param,param_len);
1494 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1497 al=SSL_AD_DECRYPT_ERROR;
1498 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1505 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1511 if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK))
1512 /* aNULL or kPSK do not need public keys */
1514 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1517 /* still data left over */
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 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
1589 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1590 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1595 p=d=(unsigned char *)s->init_msg;
1597 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1599 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1603 /* get the certificate types */
1605 if (ctype_num > SSL3_CT_NUMBER)
1606 ctype_num=SSL3_CT_NUMBER;
1607 for (i=0; i<ctype_num; i++)
1608 s->s3->tmp.ctype[i]= p[i];
1611 /* get the CA RDNs */
1616 out=fopen("/tmp/vsign.der","w");
1617 fwrite(p,1,llen,out);
1622 if ((llen+ctype_num+2+1) != n)
1624 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1625 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1629 for (nc=0; nc<llen; )
1632 if ((l+nc+2) > llen)
1634 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1635 goto cont; /* netscape bugs */
1636 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1637 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1643 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1645 /* If netscape tolerance is on, ignore errors */
1646 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1650 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1651 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1658 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1659 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1662 if (!sk_X509_NAME_push(ca_sk,xn))
1664 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1678 /* we should setup a certificate to return.... */
1679 s->s3->tmp.cert_req=1;
1680 s->s3->tmp.ctype_num=ctype_num;
1681 if (s->s3->tmp.ca_names != NULL)
1682 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1683 s->s3->tmp.ca_names=ca_sk;
1688 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1692 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1694 return(X509_NAME_cmp(*a,*b));
1697 int ssl3_get_server_done(SSL *s)
1702 n=s->method->ssl_get_message(s,
1703 SSL3_ST_CR_SRVR_DONE_A,
1704 SSL3_ST_CR_SRVR_DONE_B,
1705 SSL3_MT_SERVER_DONE,
1706 30, /* should be very small, like 0 :-) */
1709 if (!ok) return((int)n);
1712 /* should contain no data */
1713 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1714 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1722 int ssl3_send_client_key_exchange(SSL *s)
1724 unsigned char *p,*d;
1726 unsigned long alg_k;
1727 #ifndef OPENSSL_NO_RSA
1729 EVP_PKEY *pkey=NULL;
1731 #ifndef OPENSSL_NO_KRB5
1733 #endif /* OPENSSL_NO_KRB5 */
1734 #ifndef OPENSSL_NO_ECDH
1735 EC_KEY *clnt_ecdh = NULL;
1736 const EC_POINT *srvr_ecpoint = NULL;
1737 EVP_PKEY *srvr_pub_pkey = NULL;
1738 unsigned char *encodedPoint = NULL;
1739 int encoded_pt_len = 0;
1740 BN_CTX * bn_ctx = NULL;
1743 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1745 d=(unsigned char *)s->init_buf->data;
1748 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
1750 /* Fool emacs indentation */
1752 #ifndef OPENSSL_NO_RSA
1753 else if (alg_k & SSL_kRSA)
1756 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1758 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1759 rsa=s->session->sess_cert->peer_rsa_tmp;
1762 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1763 if ((pkey == NULL) ||
1764 (pkey->type != EVP_PKEY_RSA) ||
1765 (pkey->pkey.rsa == NULL))
1767 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1771 EVP_PKEY_free(pkey);
1774 tmp_buf[0]=s->client_version>>8;
1775 tmp_buf[1]=s->client_version&0xff;
1776 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1779 s->session->master_key_length=sizeof tmp_buf;
1782 /* Fix buf for TLS and beyond */
1783 if (s->version > SSL3_VERSION)
1785 n=RSA_public_encrypt(sizeof tmp_buf,
1786 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1788 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1789 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1793 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1797 /* Fix buf for TLS and beyond */
1798 if (s->version > SSL3_VERSION)
1804 s->session->master_key_length=
1805 s->method->ssl3_enc->generate_master_secret(s,
1806 s->session->master_key,
1807 tmp_buf,sizeof tmp_buf);
1808 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1811 #ifndef OPENSSL_NO_KRB5
1812 else if (alg_k & SSL_kKRB5)
1814 krb5_error_code krb5rc;
1815 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1816 /* krb5_data krb5_ap_req; */
1817 krb5_data *enc_ticket;
1818 krb5_data authenticator, *authp = NULL;
1819 EVP_CIPHER_CTX ciph_ctx;
1820 EVP_CIPHER *enc = NULL;
1821 unsigned char iv[EVP_MAX_IV_LENGTH];
1822 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1823 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1824 + EVP_MAX_IV_LENGTH];
1825 int padl, outl = sizeof(epms);
1827 EVP_CIPHER_CTX_init(&ciph_ctx);
1830 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1832 #endif /* KSSL_DEBUG */
1836 if (KRB5SENDAUTH) authp = &authenticator;
1837 #endif /* KRB5SENDAUTH */
1839 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1841 enc = kssl_map_enc(kssl_ctx->enctype);
1846 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1847 if (krb5rc && kssl_err.text)
1848 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1850 #endif /* KSSL_DEBUG */
1854 ssl3_send_alert(s,SSL3_AL_FATAL,
1855 SSL_AD_HANDSHAKE_FAILURE);
1856 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1861 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1862 ** in place of RFC 2712 KerberosWrapper, as in:
1864 ** Send ticket (copy to *p, set n = length)
1865 ** n = krb5_ap_req.length;
1866 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1867 ** if (krb5_ap_req.data)
1868 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1870 ** Now using real RFC 2712 KerberosWrapper
1871 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1872 ** Note: 2712 "opaque" types are here replaced
1873 ** with a 2-byte length followed by the value.
1875 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1876 ** Where "xx xx" = length bytes. Shown here with
1877 ** optional authenticator omitted.
1880 /* KerberosWrapper.Ticket */
1881 s2n(enc_ticket->length,p);
1882 memcpy(p, enc_ticket->data, enc_ticket->length);
1883 p+= enc_ticket->length;
1884 n = enc_ticket->length + 2;
1886 /* KerberosWrapper.Authenticator */
1887 if (authp && authp->length)
1889 s2n(authp->length,p);
1890 memcpy(p, authp->data, authp->length);
1892 n+= authp->length + 2;
1900 s2n(0,p);/* null authenticator length */
1904 tmp_buf[0]=s->client_version>>8;
1905 tmp_buf[1]=s->client_version&0xff;
1906 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1909 /* 20010420 VRS. Tried it this way; failed.
1910 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1911 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1912 ** kssl_ctx->length);
1913 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1916 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1917 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1919 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1921 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1923 if (outl > sizeof epms)
1925 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1928 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1930 /* KerberosWrapper.EncryptedPreMasterSecret */
1932 memcpy(p, epms, outl);
1936 s->session->master_key_length=
1937 s->method->ssl3_enc->generate_master_secret(s,
1938 s->session->master_key,
1939 tmp_buf, sizeof tmp_buf);
1941 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
1942 OPENSSL_cleanse(epms, outl);
1945 #ifndef OPENSSL_NO_DH
1946 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1948 DH *dh_srvr,*dh_clnt;
1950 if (s->session->sess_cert->peer_dh_tmp != NULL)
1951 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1954 /* we get them from the cert */
1955 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1956 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1960 /* generate a new random key */
1961 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1963 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1966 if (!DH_generate_key(dh_clnt))
1968 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1972 /* use the 'p' output buffer for the DH key, but
1973 * make sure to clear it out afterwards */
1975 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1979 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1983 /* generate master key from the result */
1984 s->session->master_key_length=
1985 s->method->ssl3_enc->generate_master_secret(s,
1986 s->session->master_key,p,n);
1990 /* send off the data */
1991 n=BN_num_bytes(dh_clnt->pub_key);
1993 BN_bn2bin(dh_clnt->pub_key,p);
1998 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2002 #ifndef OPENSSL_NO_ECDH
2003 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
2005 const EC_GROUP *srvr_group = NULL;
2007 int ecdh_clnt_cert = 0;
2010 /* Did we send out the client's
2011 * ECDH share for use in premaster
2012 * computation as part of client certificate?
2013 * If so, set ecdh_clnt_cert to 1.
2015 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
2017 /* XXX: For now, we do not support client
2018 * authentication using ECDH certificates.
2019 * To add such support, one needs to add
2020 * code that checks for appropriate
2021 * conditions and sets ecdh_clnt_cert to 1.
2022 * For example, the cert have an ECC
2023 * key on the same curve as the server's
2024 * and the key should be authorized for
2027 * One also needs to add code in ssl3_connect
2028 * to skip sending the certificate verify
2031 * if ((s->cert->key->privatekey != NULL) &&
2032 * (s->cert->key->privatekey->type ==
2033 * EVP_PKEY_EC) && ...)
2034 * ecdh_clnt_cert = 1;
2038 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2040 tkey = s->session->sess_cert->peer_ecdh_tmp;
2044 /* Get the Server Public Key from Cert */
2045 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2046 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2047 if ((srvr_pub_pkey == NULL) ||
2048 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2049 (srvr_pub_pkey->pkey.ec == NULL))
2051 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2052 ERR_R_INTERNAL_ERROR);
2056 tkey = srvr_pub_pkey->pkey.ec;
2059 srvr_group = EC_KEY_get0_group(tkey);
2060 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2062 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2064 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2065 ERR_R_INTERNAL_ERROR);
2069 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2071 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2075 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2077 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2082 /* Reuse key info from our certificate
2083 * We only need our private key to perform
2084 * the ECDH computation.
2086 const BIGNUM *priv_key;
2087 tkey = s->cert->key->privatekey->pkey.ec;
2088 priv_key = EC_KEY_get0_private_key(tkey);
2089 if (priv_key == NULL)
2091 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2094 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2096 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2102 /* Generate a new ECDH key pair */
2103 if (!(EC_KEY_generate_key(clnt_ecdh)))
2105 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2110 /* use the 'p' output buffer for the ECDH key, but
2111 * make sure to clear it out afterwards
2114 field_size = EC_GROUP_get_degree(srvr_group);
2115 if (field_size <= 0)
2117 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2121 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2124 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2129 /* generate master key from the result */
2130 s->session->master_key_length = s->method->ssl3_enc \
2131 -> generate_master_secret(s,
2132 s->session->master_key,
2135 memset(p, 0, n); /* clean up */
2139 /* Send empty client key exch message */
2144 /* First check the size of encoding and
2145 * allocate memory accordingly.
2148 EC_POINT_point2oct(srvr_group,
2149 EC_KEY_get0_public_key(clnt_ecdh),
2150 POINT_CONVERSION_UNCOMPRESSED,
2153 encodedPoint = (unsigned char *)
2154 OPENSSL_malloc(encoded_pt_len *
2155 sizeof(unsigned char));
2156 bn_ctx = BN_CTX_new();
2157 if ((encodedPoint == NULL) ||
2160 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2164 /* Encode the public key */
2165 n = EC_POINT_point2oct(srvr_group,
2166 EC_KEY_get0_public_key(clnt_ecdh),
2167 POINT_CONVERSION_UNCOMPRESSED,
2168 encodedPoint, encoded_pt_len, bn_ctx);
2170 *p = n; /* length of encoded point */
2171 /* Encoded point will be copied here */
2173 /* copy the point */
2174 memcpy((unsigned char *)p, encodedPoint, n);
2175 /* increment n to account for length field */
2179 /* Free allocated memory */
2180 BN_CTX_free(bn_ctx);
2181 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2182 if (clnt_ecdh != NULL)
2183 EC_KEY_free(clnt_ecdh);
2184 EVP_PKEY_free(srvr_pub_pkey);
2186 #endif /* !OPENSSL_NO_ECDH */
2187 #ifndef OPENSSL_NO_PSK
2188 else if (alg_k & SSL_kPSK)
2190 char identity[PSK_MAX_IDENTITY_LEN];
2191 unsigned char *t = NULL;
2192 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
2193 unsigned int pre_ms_len = 0, psk_len = 0;
2197 if (s->psk_client_callback == NULL)
2199 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2200 SSL_R_PSK_NO_CLIENT_CB);
2204 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
2205 identity, PSK_MAX_IDENTITY_LEN,
2206 psk_or_pre_ms, sizeof(psk_or_pre_ms));
2207 if (psk_len > PSK_MAX_PSK_LEN)
2209 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2210 ERR_R_INTERNAL_ERROR);
2213 else if (psk_len == 0)
2215 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2216 SSL_R_PSK_IDENTITY_NOT_FOUND);
2220 /* create PSK pre_master_secret */
2221 pre_ms_len = 2+psk_len+2+psk_len;
2223 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
2225 memset(t, 0, psk_len);
2229 if (s->session->psk_identity_hint != NULL)
2230 OPENSSL_free(s->session->psk_identity_hint);
2231 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
2232 if (s->ctx->psk_identity_hint != NULL &&
2233 s->session->psk_identity_hint == NULL)
2235 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2236 ERR_R_MALLOC_FAILURE);
2240 if (s->session->psk_identity != NULL)
2241 OPENSSL_free(s->session->psk_identity);
2242 s->session->psk_identity = BUF_strdup(identity);
2243 if (s->session->psk_identity == NULL)
2245 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2246 ERR_R_MALLOC_FAILURE);
2250 s->session->master_key_length =
2251 s->method->ssl3_enc->generate_master_secret(s,
2252 s->session->master_key,
2253 psk_or_pre_ms, pre_ms_len);
2254 n = strlen(identity);
2256 memcpy(p, identity, n);
2260 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
2261 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
2264 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
2271 ssl3_send_alert(s, SSL3_AL_FATAL,
2272 SSL_AD_HANDSHAKE_FAILURE);
2273 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2274 ERR_R_INTERNAL_ERROR);
2278 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2281 s->state=SSL3_ST_CW_KEY_EXCH_B;
2282 /* number of bytes to write */
2287 /* SSL3_ST_CW_KEY_EXCH_B */
2288 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2290 #ifndef OPENSSL_NO_ECDH
2291 BN_CTX_free(bn_ctx);
2292 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2293 if (clnt_ecdh != NULL)
2294 EC_KEY_free(clnt_ecdh);
2295 EVP_PKEY_free(srvr_pub_pkey);
2300 int ssl3_send_client_verify(SSL *s)
2302 unsigned char *p,*d;
2303 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2305 #ifndef OPENSSL_NO_RSA
2309 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2313 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2315 d=(unsigned char *)s->init_buf->data;
2317 pkey=s->cert->key->privatekey;
2319 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2320 &(data[MD5_DIGEST_LENGTH]));
2322 #ifndef OPENSSL_NO_RSA
2323 if (pkey->type == EVP_PKEY_RSA)
2325 s->method->ssl3_enc->cert_verify_mac(s,
2326 &(s->s3->finish_dgst1),&(data[0]));
2327 if (RSA_sign(NID_md5_sha1, data,
2328 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2329 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2331 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2339 #ifndef OPENSSL_NO_DSA
2340 if (pkey->type == EVP_PKEY_DSA)
2342 if (!DSA_sign(pkey->save_type,
2343 &(data[MD5_DIGEST_LENGTH]),
2344 SHA_DIGEST_LENGTH,&(p[2]),
2345 (unsigned int *)&j,pkey->pkey.dsa))
2347 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2355 #ifndef OPENSSL_NO_ECDSA
2356 if (pkey->type == EVP_PKEY_EC)
2358 if (!ECDSA_sign(pkey->save_type,
2359 &(data[MD5_DIGEST_LENGTH]),
2360 SHA_DIGEST_LENGTH,&(p[2]),
2361 (unsigned int *)&j,pkey->pkey.ec))
2363 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2373 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2376 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2379 s->state=SSL3_ST_CW_CERT_VRFY_B;
2380 s->init_num=(int)n+4;
2383 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2388 int ssl3_send_client_certificate(SSL *s)
2391 EVP_PKEY *pkey=NULL;
2395 if (s->state == SSL3_ST_CW_CERT_A)
2397 if ((s->cert == NULL) ||
2398 (s->cert->key->x509 == NULL) ||
2399 (s->cert->key->privatekey == NULL))
2400 s->state=SSL3_ST_CW_CERT_B;
2402 s->state=SSL3_ST_CW_CERT_C;
2405 /* We need to get a client cert */
2406 if (s->state == SSL3_ST_CW_CERT_B)
2408 /* If we get an error, we need to
2409 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2410 * We then get retied later */
2412 if (s->ctx->client_cert_cb != NULL)
2413 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2416 s->rwstate=SSL_X509_LOOKUP;
2419 s->rwstate=SSL_NOTHING;
2420 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2422 s->state=SSL3_ST_CW_CERT_B;
2423 if ( !SSL_use_certificate(s,x509) ||
2424 !SSL_use_PrivateKey(s,pkey))
2430 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2433 if (x509 != NULL) X509_free(x509);
2434 if (pkey != NULL) EVP_PKEY_free(pkey);
2437 if (s->version == SSL3_VERSION)
2439 s->s3->tmp.cert_req=0;
2440 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2445 s->s3->tmp.cert_req=2;
2449 /* Ok, we have a cert */
2450 s->state=SSL3_ST_CW_CERT_C;
2453 if (s->state == SSL3_ST_CW_CERT_C)
2455 s->state=SSL3_ST_CW_CERT_D;
2456 l=ssl3_output_cert_chain(s,
2457 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2461 /* SSL3_ST_CW_CERT_D */
2462 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2465 #define has_bits(i,m) (((i)&(m)) == (m))
2467 int ssl3_check_cert_and_algorithm(SSL *s)
2471 EVP_PKEY *pkey=NULL;
2473 #ifndef OPENSSL_NO_RSA
2476 #ifndef OPENSSL_NO_DH
2480 sc=s->session->sess_cert;
2483 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2487 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
2488 alg_a=s->s3->tmp.new_cipher->algorithm_auth;
2490 /* we don't have a certificate */
2491 if ((alg_a & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK))
2494 #ifndef OPENSSL_NO_RSA
2495 rsa=s->session->sess_cert->peer_rsa_tmp;
2497 #ifndef OPENSSL_NO_DH
2498 dh=s->session->sess_cert->peer_dh_tmp;
2501 /* This is the passed certificate */
2503 idx=sc->peer_cert_type;
2504 #ifndef OPENSSL_NO_ECDH
2505 if (idx == SSL_PKEY_ECC)
2507 if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2508 s->s3->tmp.new_cipher) == 0)
2509 { /* check failed */
2510 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2519 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2520 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2521 EVP_PKEY_free(pkey);
2524 /* Check that we have a certificate if we require one */
2525 if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2527 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2530 #ifndef OPENSSL_NO_DSA
2531 else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2533 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2537 #ifndef OPENSSL_NO_RSA
2538 if ((alg_k & SSL_kRSA) &&
2539 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2541 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2545 #ifndef OPENSSL_NO_DH
2546 if ((alg_k & SSL_kEDH) &&
2547 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2549 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2552 else if ((alg_k & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2554 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2557 #ifndef OPENSSL_NO_DSA
2558 else if ((alg_k & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2560 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2566 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2568 #ifndef OPENSSL_NO_RSA
2569 if (alg_k & SSL_kRSA)
2572 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2574 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2580 #ifndef OPENSSL_NO_DH
2581 if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2584 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2586 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2593 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2599 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);