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 s->state=SSL3_ST_CR_FINISHED_A;
281 /* Check if it is anon DH/ECDH */
282 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
284 ret=ssl3_get_server_certificate(s);
285 if (ret <= 0) goto end;
286 #ifndef OPENSSL_NO_TLSEXT
287 if (s->tlsext_status_expected)
288 s->state=SSL3_ST_CR_CERT_STATUS_A;
290 s->state=SSL3_ST_CR_KEY_EXCH_A;
295 s->state=SSL3_ST_CR_KEY_EXCH_A;
301 s->state=SSL3_ST_CR_KEY_EXCH_A;
306 case SSL3_ST_CR_KEY_EXCH_A:
307 case SSL3_ST_CR_KEY_EXCH_B:
308 ret=ssl3_get_key_exchange(s);
309 if (ret <= 0) goto end;
310 s->state=SSL3_ST_CR_CERT_REQ_A;
313 /* at this point we check that we have the
314 * required stuff from the server */
315 if (!ssl3_check_cert_and_algorithm(s))
322 case SSL3_ST_CR_CERT_REQ_A:
323 case SSL3_ST_CR_CERT_REQ_B:
324 ret=ssl3_get_certificate_request(s);
325 if (ret <= 0) goto end;
326 s->state=SSL3_ST_CR_SRVR_DONE_A;
330 case SSL3_ST_CR_SRVR_DONE_A:
331 case SSL3_ST_CR_SRVR_DONE_B:
332 ret=ssl3_get_server_done(s);
333 if (ret <= 0) goto end;
334 if (s->s3->tmp.cert_req)
335 s->state=SSL3_ST_CW_CERT_A;
337 s->state=SSL3_ST_CW_KEY_EXCH_A;
342 case SSL3_ST_CW_CERT_A:
343 case SSL3_ST_CW_CERT_B:
344 case SSL3_ST_CW_CERT_C:
345 case SSL3_ST_CW_CERT_D:
346 ret=ssl3_send_client_certificate(s);
347 if (ret <= 0) goto end;
348 s->state=SSL3_ST_CW_KEY_EXCH_A;
352 case SSL3_ST_CW_KEY_EXCH_A:
353 case SSL3_ST_CW_KEY_EXCH_B:
354 ret=ssl3_send_client_key_exchange(s);
355 if (ret <= 0) goto end;
356 l=s->s3->tmp.new_cipher->algorithms;
357 /* EAY EAY EAY need to check for DH fix cert
359 /* For TLS, cert_req is set to 2, so a cert chain
360 * of nothing is sent, but no verify packet is sent */
361 /* XXX: For now, we do not support client
362 * authentication in ECDH cipher suites with
363 * ECDH (rather than ECDSA) certificates.
364 * We need to skip the certificate verify
365 * message when client's ECDH public key is sent
366 * inside the client certificate.
368 if (s->s3->tmp.cert_req == 1)
370 s->state=SSL3_ST_CW_CERT_VRFY_A;
374 s->state=SSL3_ST_CW_CHANGE_A;
375 s->s3->change_cipher_spec=0;
381 case SSL3_ST_CW_CERT_VRFY_A:
382 case SSL3_ST_CW_CERT_VRFY_B:
383 ret=ssl3_send_client_verify(s);
384 if (ret <= 0) goto end;
385 s->state=SSL3_ST_CW_CHANGE_A;
387 s->s3->change_cipher_spec=0;
390 case SSL3_ST_CW_CHANGE_A:
391 case SSL3_ST_CW_CHANGE_B:
392 ret=ssl3_send_change_cipher_spec(s,
393 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
394 if (ret <= 0) goto end;
395 s->state=SSL3_ST_CW_FINISHED_A;
398 s->session->cipher=s->s3->tmp.new_cipher;
399 #ifdef OPENSSL_NO_COMP
400 s->session->compress_meth=0;
402 if (s->s3->tmp.new_compression == NULL)
403 s->session->compress_meth=0;
405 s->session->compress_meth=
406 s->s3->tmp.new_compression->id;
408 if (!s->method->ssl3_enc->setup_key_block(s))
414 if (!s->method->ssl3_enc->change_cipher_state(s,
415 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
423 case SSL3_ST_CW_FINISHED_A:
424 case SSL3_ST_CW_FINISHED_B:
425 ret=ssl3_send_finished(s,
426 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
427 s->method->ssl3_enc->client_finished_label,
428 s->method->ssl3_enc->client_finished_label_len);
429 if (ret <= 0) goto end;
430 s->state=SSL3_ST_CW_FLUSH;
433 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
436 s->s3->tmp.next_state=SSL_ST_OK;
437 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
440 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
441 s->s3->delay_buf_pop_ret=0;
446 #ifndef OPENSSL_NO_TLSEXT
447 /* Allow NewSessionTicket if ticket expected */
448 if (s->tlsext_ticket_expected)
449 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
453 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
458 #ifndef OPENSSL_NO_TLSEXT
459 case SSL3_ST_CR_SESSION_TICKET_A:
460 case SSL3_ST_CR_SESSION_TICKET_B:
461 ret=ssl3_get_new_session_ticket(s);
462 if (ret <= 0) goto end;
463 s->state=SSL3_ST_CR_FINISHED_A;
467 case SSL3_ST_CR_CERT_STATUS_A:
468 case SSL3_ST_CR_CERT_STATUS_B:
469 ret=ssl3_get_cert_status(s);
470 if (ret <= 0) goto end;
471 s->state=SSL3_ST_CR_KEY_EXCH_A;
476 case SSL3_ST_CR_FINISHED_A:
477 case SSL3_ST_CR_FINISHED_B:
479 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
480 SSL3_ST_CR_FINISHED_B);
481 if (ret <= 0) goto end;
484 s->state=SSL3_ST_CW_CHANGE_A;
490 case SSL3_ST_CW_FLUSH:
491 /* number of bytes to be flushed */
492 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
495 s->rwstate=SSL_WRITING;
496 num1=BIO_flush(s->wbio);
497 if (num1 <= 0) { ret= -1; goto end; }
498 s->rwstate=SSL_NOTHING;
501 s->state=s->s3->tmp.next_state;
505 /* clean a few things up */
506 ssl3_cleanup_key_block(s);
508 if (s->init_buf != NULL)
510 BUF_MEM_free(s->init_buf);
514 /* If we are not 'joining' the last two packets,
515 * remove the buffering now */
516 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
517 ssl_free_wbio_buffer(s);
518 /* else do it later in ssl3_write */
523 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
524 if (s->hit) s->ctx->stats.sess_hit++;
528 s->handshake_func=ssl3_connect;
529 s->ctx->stats.sess_connect_good++;
531 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
537 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
543 /* did we do anything */
544 if (!s->s3->tmp.reuse_message && !skip)
548 if ((ret=BIO_flush(s->wbio)) <= 0)
552 if ((cb != NULL) && (s->state != state))
556 cb(s,SSL_CB_CONNECT_LOOP,1);
567 cb(s,SSL_CB_CONNECT_EXIT,ret);
572 int ssl3_client_hello(SSL *s)
577 unsigned long Time,l;
578 #ifndef OPENSSL_NO_COMP
583 buf=(unsigned char *)s->init_buf->data;
584 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
586 if ((s->session == NULL) ||
587 (s->session->ssl_version != s->version) ||
588 (s->session->not_resumable))
590 if (!ssl_get_new_session(s,0))
593 /* else use the pre-loaded session */
595 p=s->s3->client_random;
596 Time=(unsigned long)time(NULL); /* Time */
598 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
601 /* Do the message type and length last */
604 *(p++)=s->version>>8;
605 *(p++)=s->version&0xff;
606 s->client_version=s->version;
609 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
616 i=s->session->session_id_length;
620 if (i > (int)sizeof(s->session->session_id))
622 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
625 memcpy(p,s->session->session_id,i);
629 /* Ciphers supported */
630 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
633 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
640 #ifdef OPENSSL_NO_COMP
643 if (s->ctx->comp_methods == NULL)
646 j=sk_SSL_COMP_num(s->ctx->comp_methods);
650 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
654 *(p++)=0; /* Add the NULL method */
655 #ifndef OPENSSL_NO_TLSEXT
656 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
658 SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
664 *(d++)=SSL3_MT_CLIENT_HELLO;
667 s->state=SSL3_ST_CW_CLNT_HELLO_B;
668 /* number of bytes to write */
673 /* SSL3_ST_CW_CLNT_HELLO_B */
674 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
679 int ssl3_get_server_hello(SSL *s)
681 STACK_OF(SSL_CIPHER) *sk;
687 #ifndef OPENSSL_NO_COMP
691 n=s->method->ssl_get_message(s,
692 SSL3_ST_CR_SRVR_HELLO_A,
693 SSL3_ST_CR_SRVR_HELLO_B,
698 if (!ok) return((int)n);
700 if ( SSL_version(s) == DTLS1_VERSION)
702 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
704 if ( s->d1->send_cookie == 0)
706 s->s3->tmp.reuse_message = 1;
709 else /* already sent a cookie */
711 al=SSL_AD_UNEXPECTED_MESSAGE;
712 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
718 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
720 al=SSL_AD_UNEXPECTED_MESSAGE;
721 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
725 d=p=(unsigned char *)s->init_msg;
727 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
729 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
730 s->version=(s->version&0xff00)|p[1];
731 al=SSL_AD_PROTOCOL_VERSION;
736 /* load the server hello data */
737 /* load the server random */
738 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
741 /* get the session-id */
744 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
746 al=SSL_AD_ILLEGAL_PARAMETER;
747 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
751 if (j != 0 && j == s->session->session_id_length
752 && memcmp(p,s->session->session_id,j) == 0)
754 if(s->sid_ctx_length != s->session->sid_ctx_length
755 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
757 /* actually a client application bug */
758 al=SSL_AD_ILLEGAL_PARAMETER;
759 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
764 else /* a miss or crap from the other end */
766 /* If we were trying for session-id reuse, make a new
767 * SSL_SESSION so we don't stuff up other people */
769 if (s->session->session_id_length > 0)
771 if (!ssl_get_new_session(s,0))
773 al=SSL_AD_INTERNAL_ERROR;
777 s->session->session_id_length=j;
778 memcpy(s->session->session_id,p,j); /* j could be 0 */
781 c=ssl_get_cipher_by_char(s,p);
785 al=SSL_AD_ILLEGAL_PARAMETER;
786 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
789 p+=ssl_put_cipher_by_char(s,NULL,NULL);
791 sk=ssl_get_ciphers_by_id(s);
792 i=sk_SSL_CIPHER_find(sk,c);
795 /* we did not say we would use this cipher */
796 al=SSL_AD_ILLEGAL_PARAMETER;
797 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
801 /* Depending on the session caching (internal/external), the cipher
802 and/or cipher_id values may not be set. Make sure that
803 cipher_id is set and use it for comparison. */
804 if (s->session->cipher)
805 s->session->cipher_id = s->session->cipher->id;
806 if (s->hit && (s->session->cipher_id != c->id))
809 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
811 al=SSL_AD_ILLEGAL_PARAMETER;
812 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
816 s->s3->tmp.new_cipher=c;
818 /* lets get the compression algorithm */
820 #ifdef OPENSSL_NO_COMP
823 al=SSL_AD_ILLEGAL_PARAMETER;
824 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
832 comp=ssl3_comp_find(s->ctx->comp_methods,j);
834 if ((j != 0) && (comp == NULL))
836 al=SSL_AD_ILLEGAL_PARAMETER;
837 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
842 s->s3->tmp.new_compression=comp;
845 #ifndef OPENSSL_NO_TLSEXT
847 if (s->version > SSL3_VERSION)
849 if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al))
851 /* 'al' set by ssl_parse_serverhello_tlsext */
852 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT);
855 if (ssl_check_serverhello_tlsext(s) <= 0)
857 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SERVERHELLO_TLSEXT);
866 /* wrong packet length */
867 al=SSL_AD_DECODE_ERROR;
868 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
874 ssl3_send_alert(s,SSL3_AL_FATAL,al);
879 int ssl3_get_server_certificate(SSL *s)
882 unsigned long n,nc,llen,l;
884 const unsigned char *q,*p;
886 STACK_OF(X509) *sk=NULL;
889 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
891 n=s->method->ssl_get_message(s,
898 if (!ok) return((int)n);
900 if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) ||
901 ((s->s3->tmp.new_cipher->algorithms & SSL_aKRB5) &&
902 (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)))
904 s->s3->tmp.reuse_message=1;
908 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
910 al=SSL_AD_UNEXPECTED_MESSAGE;
911 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
914 p=d=(unsigned char *)s->init_msg;
916 if ((sk=sk_X509_new_null()) == NULL)
918 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
925 al=SSL_AD_DECODE_ERROR;
926 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
929 for (nc=0; nc<llen; )
934 al=SSL_AD_DECODE_ERROR;
935 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
940 x=d2i_X509(NULL,&q,l);
943 al=SSL_AD_BAD_CERTIFICATE;
944 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
949 al=SSL_AD_DECODE_ERROR;
950 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
953 if (!sk_X509_push(sk,x))
955 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
963 i=ssl_verify_cert_chain(s,sk);
964 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
965 #ifndef OPENSSL_NO_KRB5
966 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
967 != (SSL_aKRB5|SSL_kKRB5)
968 #endif /* OPENSSL_NO_KRB5 */
971 al=ssl_verify_alarm_type(s->verify_result);
972 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
975 ERR_clear_error(); /* but we keep s->verify_result */
977 sc=ssl_sess_cert_new();
978 if (sc == NULL) goto err;
980 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
981 s->session->sess_cert=sc;
984 /* Inconsistency alert: cert_chain does include the peer's
985 * certificate, which we don't include in s3_srvr.c */
986 x=sk_X509_value(sk,0);
988 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
990 pkey=X509_get_pubkey(x);
992 /* VRS: allow null cert if auth == KRB5 */
993 need_cert = ((s->s3->tmp.new_cipher->algorithms
994 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
995 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
998 printf("pkey,x = %p, %p\n", pkey,x);
999 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
1000 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
1001 s->s3->tmp.new_cipher->algorithms, need_cert);
1002 #endif /* KSSL_DEBUG */
1004 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
1008 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1009 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
1013 i=ssl_cert_type(x,pkey);
1014 if (need_cert && i < 0)
1018 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
1019 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
1025 sc->peer_cert_type=i;
1026 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1027 /* Why would the following ever happen?
1028 * We just created sc a couple of lines ago. */
1029 if (sc->peer_pkeys[i].x509 != NULL)
1030 X509_free(sc->peer_pkeys[i].x509);
1031 sc->peer_pkeys[i].x509=x;
1032 sc->peer_key= &(sc->peer_pkeys[i]);
1034 if (s->session->peer != NULL)
1035 X509_free(s->session->peer);
1036 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
1041 sc->peer_cert_type=i;
1044 if (s->session->peer != NULL)
1045 X509_free(s->session->peer);
1046 s->session->peer=NULL;
1048 s->session->verify_result = s->verify_result;
1056 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1059 EVP_PKEY_free(pkey);
1061 sk_X509_pop_free(sk,X509_free);
1065 int ssl3_get_key_exchange(SSL *s)
1067 #ifndef OPENSSL_NO_RSA
1068 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
1071 unsigned char *param,*p;
1072 int al,i,j,param_len,ok;
1074 EVP_PKEY *pkey=NULL;
1075 #ifndef OPENSSL_NO_RSA
1078 #ifndef OPENSSL_NO_DH
1081 #ifndef OPENSSL_NO_ECDH
1082 EC_KEY *ecdh = NULL;
1083 BN_CTX *bn_ctx = NULL;
1084 EC_POINT *srvr_ecpoint = NULL;
1086 int encoded_pt_len = 0;
1089 /* use same message size as in ssl3_get_certificate_request()
1090 * as ServerKeyExchange message may be skipped */
1091 n=s->method->ssl_get_message(s,
1092 SSL3_ST_CR_KEY_EXCH_A,
1093 SSL3_ST_CR_KEY_EXCH_B,
1098 if (!ok) return((int)n);
1100 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1102 s->s3->tmp.reuse_message=1;
1106 param=p=(unsigned char *)s->init_msg;
1108 if (s->session->sess_cert != NULL)
1110 #ifndef OPENSSL_NO_RSA
1111 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1113 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1114 s->session->sess_cert->peer_rsa_tmp=NULL;
1117 #ifndef OPENSSL_NO_DH
1118 if (s->session->sess_cert->peer_dh_tmp)
1120 DH_free(s->session->sess_cert->peer_dh_tmp);
1121 s->session->sess_cert->peer_dh_tmp=NULL;
1124 #ifndef OPENSSL_NO_ECDH
1125 if (s->session->sess_cert->peer_ecdh_tmp)
1127 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1128 s->session->sess_cert->peer_ecdh_tmp=NULL;
1134 s->session->sess_cert=ssl_sess_cert_new();
1138 alg=s->s3->tmp.new_cipher->algorithms;
1139 EVP_MD_CTX_init(&md_ctx);
1141 #ifndef OPENSSL_NO_RSA
1144 if ((rsa=RSA_new()) == NULL)
1146 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1153 al=SSL_AD_DECODE_ERROR;
1154 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1157 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1159 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1168 al=SSL_AD_DECODE_ERROR;
1169 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1172 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1174 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1180 /* this should be because we are using an export cipher */
1182 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1185 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1188 s->session->sess_cert->peer_rsa_tmp=rsa;
1191 #else /* OPENSSL_NO_RSA */
1195 #ifndef OPENSSL_NO_DH
1196 else if (alg & SSL_kEDH)
1198 if ((dh=DH_new()) == NULL)
1200 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1207 al=SSL_AD_DECODE_ERROR;
1208 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1211 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1213 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1222 al=SSL_AD_DECODE_ERROR;
1223 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1226 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1228 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1237 al=SSL_AD_DECODE_ERROR;
1238 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1241 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1243 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1249 #ifndef OPENSSL_NO_RSA
1251 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1256 #ifndef OPENSSL_NO_DSA
1257 else if (alg & SSL_aDSS)
1258 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1260 /* else anonymous DH, so no certificate or pkey. */
1262 s->session->sess_cert->peer_dh_tmp=dh;
1265 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1267 al=SSL_AD_ILLEGAL_PARAMETER;
1268 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1271 #endif /* !OPENSSL_NO_DH */
1273 #ifndef OPENSSL_NO_ECDH
1274 else if (alg & SSL_kECDHE)
1277 const EC_GROUP *group;
1279 if ((ecdh=EC_KEY_new()) == NULL)
1281 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1285 /* Extract elliptic curve parameters and the
1286 * server's ephemeral ECDH public key.
1287 * Keep accumulating lengths of various components in
1288 * param_len and make sure it never exceeds n.
1291 /* XXX: For now we only support named (not generic) curves
1292 * and the ECParameters in this case is just three bytes.
1295 if ((param_len > n) ||
1296 (*p != NAMED_CURVE_TYPE) ||
1297 ((curve_nid = curve_id2nid(*(p + 2))) == 0))
1299 al=SSL_AD_INTERNAL_ERROR;
1300 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1304 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1307 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1310 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1312 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1315 EC_GROUP_free(ngroup);
1317 group = EC_KEY_get0_group(ecdh);
1319 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1320 (EC_GROUP_get_degree(group) > 163))
1322 al=SSL_AD_EXPORT_RESTRICTION;
1323 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1329 /* Next, get the encoded ECPoint */
1330 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1331 ((bn_ctx = BN_CTX_new()) == NULL))
1333 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1337 encoded_pt_len = *p; /* length of encoded point */
1339 param_len += (1 + encoded_pt_len);
1340 if ((param_len > n) ||
1341 (EC_POINT_oct2point(group, srvr_ecpoint,
1342 p, encoded_pt_len, bn_ctx) == 0))
1344 al=SSL_AD_DECODE_ERROR;
1345 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1352 /* The ECC/TLS specification does not mention
1353 * the use of DSA to sign ECParameters in the server
1354 * key exchange message. We do support RSA and ECDSA.
1357 #ifndef OPENSSL_NO_RSA
1358 else if (alg & SSL_aRSA)
1359 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1361 #ifndef OPENSSL_NO_ECDSA
1362 else if (alg & SSL_aECDSA)
1363 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1365 /* else anonymous ECDH, so no certificate or pkey. */
1366 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1367 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1369 BN_CTX_free(bn_ctx);
1370 EC_POINT_free(srvr_ecpoint);
1371 srvr_ecpoint = NULL;
1373 else if (alg & SSL_kECDH)
1375 al=SSL_AD_UNEXPECTED_MESSAGE;
1376 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1379 #endif /* !OPENSSL_NO_ECDH */
1382 al=SSL_AD_HANDSHAKE_FAILURE;
1383 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1388 /* p points to the next byte, there are 'n' bytes left */
1390 /* if it was signed, check the signature */
1395 j=EVP_PKEY_size(pkey);
1397 if ((i != n) || (n > j) || (n <= 0))
1399 /* wrong packet length */
1400 al=SSL_AD_DECODE_ERROR;
1401 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1405 #ifndef OPENSSL_NO_RSA
1406 if (pkey->type == EVP_PKEY_RSA)
1412 for (num=2; num > 0; num--)
1414 EVP_DigestInit_ex(&md_ctx,(num == 2)
1415 ?s->ctx->md5:s->ctx->sha1, NULL);
1416 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1417 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1418 EVP_DigestUpdate(&md_ctx,param,param_len);
1419 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1423 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1427 al=SSL_AD_DECRYPT_ERROR;
1428 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1434 al=SSL_AD_DECRYPT_ERROR;
1435 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1441 #ifndef OPENSSL_NO_DSA
1442 if (pkey->type == EVP_PKEY_DSA)
1445 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1446 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1447 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1448 EVP_VerifyUpdate(&md_ctx,param,param_len);
1449 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1452 al=SSL_AD_DECRYPT_ERROR;
1453 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1459 #ifndef OPENSSL_NO_ECDSA
1460 if (pkey->type == EVP_PKEY_EC)
1462 /* let's do ECDSA */
1463 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1464 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1465 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1466 EVP_VerifyUpdate(&md_ctx,param,param_len);
1467 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1470 al=SSL_AD_DECRYPT_ERROR;
1471 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1478 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1484 /* still data left over */
1485 if (!(alg & SSL_aNULL))
1487 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1492 al=SSL_AD_DECODE_ERROR;
1493 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1497 EVP_PKEY_free(pkey);
1498 EVP_MD_CTX_cleanup(&md_ctx);
1501 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1503 EVP_PKEY_free(pkey);
1504 #ifndef OPENSSL_NO_RSA
1508 #ifndef OPENSSL_NO_DH
1512 #ifndef OPENSSL_NO_ECDH
1513 BN_CTX_free(bn_ctx);
1514 EC_POINT_free(srvr_ecpoint);
1518 EVP_MD_CTX_cleanup(&md_ctx);
1522 int ssl3_get_certificate_request(SSL *s)
1525 unsigned long n,nc,l;
1526 unsigned int llen,ctype_num,i;
1528 const unsigned char *p,*q;
1530 STACK_OF(X509_NAME) *ca_sk=NULL;
1532 n=s->method->ssl_get_message(s,
1533 SSL3_ST_CR_CERT_REQ_A,
1534 SSL3_ST_CR_CERT_REQ_B,
1539 if (!ok) return((int)n);
1541 s->s3->tmp.cert_req=0;
1543 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1545 s->s3->tmp.reuse_message=1;
1549 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1551 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1552 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1556 /* TLS does not like anon-DH with client cert */
1557 if (s->version > SSL3_VERSION)
1559 l=s->s3->tmp.new_cipher->algorithms;
1562 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1563 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1568 p=d=(unsigned char *)s->init_msg;
1570 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1572 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1576 /* get the certificate types */
1578 if (ctype_num > SSL3_CT_NUMBER)
1579 ctype_num=SSL3_CT_NUMBER;
1580 for (i=0; i<ctype_num; i++)
1581 s->s3->tmp.ctype[i]= p[i];
1584 /* get the CA RDNs */
1589 out=fopen("/tmp/vsign.der","w");
1590 fwrite(p,1,llen,out);
1595 if ((llen+ctype_num+2+1) != n)
1597 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1598 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1602 for (nc=0; nc<llen; )
1605 if ((l+nc+2) > llen)
1607 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1608 goto cont; /* netscape bugs */
1609 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1610 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1616 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1618 /* If netscape tolerance is on, ignore errors */
1619 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1623 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1624 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1631 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1632 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1635 if (!sk_X509_NAME_push(ca_sk,xn))
1637 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1651 /* we should setup a certificate to return.... */
1652 s->s3->tmp.cert_req=1;
1653 s->s3->tmp.ctype_num=ctype_num;
1654 if (s->s3->tmp.ca_names != NULL)
1655 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1656 s->s3->tmp.ca_names=ca_sk;
1661 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1665 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1667 return(X509_NAME_cmp(*a,*b));
1669 #ifndef OPENSSL_NO_TLSEXT
1670 int ssl3_get_new_session_ticket(SSL *s)
1672 int ok,al,ret=0, ticklen;
1674 const unsigned char *p;
1677 n=s->method->ssl_get_message(s,
1678 SSL3_ST_CR_SESSION_TICKET_A,
1679 SSL3_ST_CR_SESSION_TICKET_B,
1687 if (s->s3->tmp.message_type == SSL3_MT_FINISHED)
1689 s->s3->tmp.reuse_message=1;
1692 if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET)
1694 al=SSL_AD_UNEXPECTED_MESSAGE;
1695 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE);
1700 /* need at least ticket_lifetime_hint + ticket length */
1701 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1702 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1705 p=d=(unsigned char *)s->init_msg;
1706 n2l(p, s->session->tlsext_tick_lifetime_hint);
1708 /* ticket_lifetime_hint + ticket_length + ticket */
1709 if (ticklen + 6 != n)
1711 al = SSL3_AL_FATAL,SSL_AD_DECODE_ERROR;
1712 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH);
1715 if (s->session->tlsext_tick)
1717 OPENSSL_free(s->session->tlsext_tick);
1718 s->session->tlsext_ticklen = 0;
1720 s->session->tlsext_tick = OPENSSL_malloc(ticklen);
1721 if (!s->session->tlsext_tick)
1723 SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE);
1726 memcpy(s->session->tlsext_tick, p, ticklen);
1727 s->session->tlsext_ticklen = ticklen;
1732 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1737 int ssl3_get_cert_status(SSL *s)
1740 unsigned long resplen;
1742 const unsigned char *p;
1744 n=s->method->ssl_get_message(s,
1745 SSL3_ST_CR_CERT_STATUS_A,
1746 SSL3_ST_CR_CERT_STATUS_B,
1747 SSL3_MT_CERTIFICATE_STATUS,
1751 if (!ok) return((int)n);
1754 /* need at least status type + length */
1755 al = SSL_AD_DECODE_ERROR;
1756 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1759 p = (unsigned char *)s->init_msg;
1760 if (*p++ != TLSEXT_STATUSTYPE_ocsp)
1762 al = SSL_AD_DECODE_ERROR;
1763 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE);
1767 if (resplen + 4 != n)
1769 al = SSL_AD_DECODE_ERROR;
1770 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH);
1773 if (s->tlsext_ocsp_resp)
1774 OPENSSL_free(s->tlsext_ocsp_resp);
1775 s->tlsext_ocsp_resp = BUF_memdup(p, resplen);
1776 if (!s->tlsext_ocsp_resp)
1778 al = SSL_AD_INTERNAL_ERROR;
1779 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1782 s->tlsext_ocsp_resplen = resplen;
1783 if (s->ctx->tlsext_status_cb)
1786 ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
1789 al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE;
1790 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE);
1795 al = SSL_AD_INTERNAL_ERROR;
1796 SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE);
1802 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1807 int ssl3_get_server_done(SSL *s)
1812 n=s->method->ssl_get_message(s,
1813 SSL3_ST_CR_SRVR_DONE_A,
1814 SSL3_ST_CR_SRVR_DONE_B,
1815 SSL3_MT_SERVER_DONE,
1816 30, /* should be very small, like 0 :-) */
1819 if (!ok) return((int)n);
1822 /* should contain no data */
1823 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1824 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1832 int ssl3_send_client_key_exchange(SSL *s)
1834 unsigned char *p,*d;
1837 #ifndef OPENSSL_NO_RSA
1839 EVP_PKEY *pkey=NULL;
1841 #ifndef OPENSSL_NO_KRB5
1843 #endif /* OPENSSL_NO_KRB5 */
1844 #ifndef OPENSSL_NO_ECDH
1845 EC_KEY *clnt_ecdh = NULL;
1846 const EC_POINT *srvr_ecpoint = NULL;
1847 EVP_PKEY *srvr_pub_pkey = NULL;
1848 unsigned char *encodedPoint = NULL;
1849 int encoded_pt_len = 0;
1850 BN_CTX * bn_ctx = NULL;
1853 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1855 d=(unsigned char *)s->init_buf->data;
1858 l=s->s3->tmp.new_cipher->algorithms;
1860 /* Fool emacs indentation */
1862 #ifndef OPENSSL_NO_RSA
1863 else if (l & SSL_kRSA)
1866 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1868 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1869 rsa=s->session->sess_cert->peer_rsa_tmp;
1872 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1873 if ((pkey == NULL) ||
1874 (pkey->type != EVP_PKEY_RSA) ||
1875 (pkey->pkey.rsa == NULL))
1877 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1881 EVP_PKEY_free(pkey);
1884 tmp_buf[0]=s->client_version>>8;
1885 tmp_buf[1]=s->client_version&0xff;
1886 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1889 s->session->master_key_length=sizeof tmp_buf;
1892 /* Fix buf for TLS and beyond */
1893 if (s->version > SSL3_VERSION)
1895 n=RSA_public_encrypt(sizeof tmp_buf,
1896 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1898 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1899 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1903 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1907 /* Fix buf for TLS and beyond */
1908 if (s->version > SSL3_VERSION)
1914 s->session->master_key_length=
1915 s->method->ssl3_enc->generate_master_secret(s,
1916 s->session->master_key,
1917 tmp_buf,sizeof tmp_buf);
1918 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1921 #ifndef OPENSSL_NO_KRB5
1922 else if (l & SSL_kKRB5)
1924 krb5_error_code krb5rc;
1925 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1926 /* krb5_data krb5_ap_req; */
1927 krb5_data *enc_ticket;
1928 krb5_data authenticator, *authp = NULL;
1929 EVP_CIPHER_CTX ciph_ctx;
1930 EVP_CIPHER *enc = NULL;
1931 unsigned char iv[EVP_MAX_IV_LENGTH];
1932 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1933 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1934 + EVP_MAX_IV_LENGTH];
1935 int padl, outl = sizeof(epms);
1937 EVP_CIPHER_CTX_init(&ciph_ctx);
1940 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1942 #endif /* KSSL_DEBUG */
1946 if (KRB5SENDAUTH) authp = &authenticator;
1947 #endif /* KRB5SENDAUTH */
1949 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1951 enc = kssl_map_enc(kssl_ctx->enctype);
1956 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1957 if (krb5rc && kssl_err.text)
1958 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1960 #endif /* KSSL_DEBUG */
1964 ssl3_send_alert(s,SSL3_AL_FATAL,
1965 SSL_AD_HANDSHAKE_FAILURE);
1966 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1971 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1972 ** in place of RFC 2712 KerberosWrapper, as in:
1974 ** Send ticket (copy to *p, set n = length)
1975 ** n = krb5_ap_req.length;
1976 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1977 ** if (krb5_ap_req.data)
1978 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1980 ** Now using real RFC 2712 KerberosWrapper
1981 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1982 ** Note: 2712 "opaque" types are here replaced
1983 ** with a 2-byte length followed by the value.
1985 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1986 ** Where "xx xx" = length bytes. Shown here with
1987 ** optional authenticator omitted.
1990 /* KerberosWrapper.Ticket */
1991 s2n(enc_ticket->length,p);
1992 memcpy(p, enc_ticket->data, enc_ticket->length);
1993 p+= enc_ticket->length;
1994 n = enc_ticket->length + 2;
1996 /* KerberosWrapper.Authenticator */
1997 if (authp && authp->length)
1999 s2n(authp->length,p);
2000 memcpy(p, authp->data, authp->length);
2002 n+= authp->length + 2;
2010 s2n(0,p);/* null authenticator length */
2014 tmp_buf[0]=s->client_version>>8;
2015 tmp_buf[1]=s->client_version&0xff;
2016 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
2019 /* 20010420 VRS. Tried it this way; failed.
2020 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
2021 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
2022 ** kssl_ctx->length);
2023 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
2026 memset(iv, 0, sizeof iv); /* per RFC 1510 */
2027 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
2029 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
2031 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
2033 if (outl > sizeof epms)
2035 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2038 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
2040 /* KerberosWrapper.EncryptedPreMasterSecret */
2042 memcpy(p, epms, outl);
2046 s->session->master_key_length=
2047 s->method->ssl3_enc->generate_master_secret(s,
2048 s->session->master_key,
2049 tmp_buf, sizeof tmp_buf);
2051 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
2052 OPENSSL_cleanse(epms, outl);
2055 #ifndef OPENSSL_NO_DH
2056 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2058 DH *dh_srvr,*dh_clnt;
2060 if (s->session->sess_cert->peer_dh_tmp != NULL)
2061 dh_srvr=s->session->sess_cert->peer_dh_tmp;
2064 /* we get them from the cert */
2065 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2066 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
2070 /* generate a new random key */
2071 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
2073 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2076 if (!DH_generate_key(dh_clnt))
2078 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2082 /* use the 'p' output buffer for the DH key, but
2083 * make sure to clear it out afterwards */
2085 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
2089 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
2093 /* generate master key from the result */
2094 s->session->master_key_length=
2095 s->method->ssl3_enc->generate_master_secret(s,
2096 s->session->master_key,p,n);
2100 /* send off the data */
2101 n=BN_num_bytes(dh_clnt->pub_key);
2103 BN_bn2bin(dh_clnt->pub_key,p);
2108 /* perhaps clean things up a bit EAY EAY EAY EAY*/
2112 #ifndef OPENSSL_NO_ECDH
2113 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
2115 const EC_GROUP *srvr_group = NULL;
2117 int ecdh_clnt_cert = 0;
2120 /* Did we send out the client's
2121 * ECDH share for use in premaster
2122 * computation as part of client certificate?
2123 * If so, set ecdh_clnt_cert to 1.
2125 if ((l & SSL_kECDH) && (s->cert != NULL))
2127 /* XXX: For now, we do not support client
2128 * authentication using ECDH certificates.
2129 * To add such support, one needs to add
2130 * code that checks for appropriate
2131 * conditions and sets ecdh_clnt_cert to 1.
2132 * For example, the cert have an ECC
2133 * key on the same curve as the server's
2134 * and the key should be authorized for
2137 * One also needs to add code in ssl3_connect
2138 * to skip sending the certificate verify
2141 * if ((s->cert->key->privatekey != NULL) &&
2142 * (s->cert->key->privatekey->type ==
2143 * EVP_PKEY_EC) && ...)
2144 * ecdh_clnt_cert = 1;
2148 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
2150 tkey = s->session->sess_cert->peer_ecdh_tmp;
2154 /* Get the Server Public Key from Cert */
2155 srvr_pub_pkey = X509_get_pubkey(s->session-> \
2156 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
2157 if ((srvr_pub_pkey == NULL) ||
2158 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
2159 (srvr_pub_pkey->pkey.ec == NULL))
2161 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2162 ERR_R_INTERNAL_ERROR);
2166 tkey = srvr_pub_pkey->pkey.ec;
2169 srvr_group = EC_KEY_get0_group(tkey);
2170 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
2172 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
2174 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2175 ERR_R_INTERNAL_ERROR);
2179 if ((clnt_ecdh=EC_KEY_new()) == NULL)
2181 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2185 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
2187 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2192 /* Reuse key info from our certificate
2193 * We only need our private key to perform
2194 * the ECDH computation.
2196 const BIGNUM *priv_key;
2197 tkey = s->cert->key->privatekey->pkey.ec;
2198 priv_key = EC_KEY_get0_private_key(tkey);
2199 if (priv_key == NULL)
2201 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2204 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2206 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2212 /* Generate a new ECDH key pair */
2213 if (!(EC_KEY_generate_key(clnt_ecdh)))
2215 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2220 /* use the 'p' output buffer for the ECDH key, but
2221 * make sure to clear it out afterwards
2224 field_size = EC_GROUP_get_degree(srvr_group);
2225 if (field_size <= 0)
2227 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2231 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2234 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2239 /* generate master key from the result */
2240 s->session->master_key_length = s->method->ssl3_enc \
2241 -> generate_master_secret(s,
2242 s->session->master_key,
2245 memset(p, 0, n); /* clean up */
2249 /* Send empty client key exch message */
2254 /* First check the size of encoding and
2255 * allocate memory accordingly.
2258 EC_POINT_point2oct(srvr_group,
2259 EC_KEY_get0_public_key(clnt_ecdh),
2260 POINT_CONVERSION_UNCOMPRESSED,
2263 encodedPoint = (unsigned char *)
2264 OPENSSL_malloc(encoded_pt_len *
2265 sizeof(unsigned char));
2266 bn_ctx = BN_CTX_new();
2267 if ((encodedPoint == NULL) ||
2270 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2274 /* Encode the public key */
2275 n = EC_POINT_point2oct(srvr_group,
2276 EC_KEY_get0_public_key(clnt_ecdh),
2277 POINT_CONVERSION_UNCOMPRESSED,
2278 encodedPoint, encoded_pt_len, bn_ctx);
2280 *p = n; /* length of encoded point */
2281 /* Encoded point will be copied here */
2283 /* copy the point */
2284 memcpy((unsigned char *)p, encodedPoint, n);
2285 /* increment n to account for length field */
2289 /* Free allocated memory */
2290 BN_CTX_free(bn_ctx);
2291 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2292 if (clnt_ecdh != NULL)
2293 EC_KEY_free(clnt_ecdh);
2294 EVP_PKEY_free(srvr_pub_pkey);
2296 #endif /* !OPENSSL_NO_ECDH */
2299 ssl3_send_alert(s, SSL3_AL_FATAL,
2300 SSL_AD_HANDSHAKE_FAILURE);
2301 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2302 ERR_R_INTERNAL_ERROR);
2306 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2309 s->state=SSL3_ST_CW_KEY_EXCH_B;
2310 /* number of bytes to write */
2315 /* SSL3_ST_CW_KEY_EXCH_B */
2316 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2318 #ifndef OPENSSL_NO_ECDH
2319 BN_CTX_free(bn_ctx);
2320 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2321 if (clnt_ecdh != NULL)
2322 EC_KEY_free(clnt_ecdh);
2323 EVP_PKEY_free(srvr_pub_pkey);
2328 int ssl3_send_client_verify(SSL *s)
2330 unsigned char *p,*d;
2331 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2333 #ifndef OPENSSL_NO_RSA
2337 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2341 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2343 d=(unsigned char *)s->init_buf->data;
2345 pkey=s->cert->key->privatekey;
2347 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2348 &(data[MD5_DIGEST_LENGTH]));
2350 #ifndef OPENSSL_NO_RSA
2351 if (pkey->type == EVP_PKEY_RSA)
2353 s->method->ssl3_enc->cert_verify_mac(s,
2354 &(s->s3->finish_dgst1),&(data[0]));
2355 if (RSA_sign(NID_md5_sha1, data,
2356 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2357 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2359 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2367 #ifndef OPENSSL_NO_DSA
2368 if (pkey->type == EVP_PKEY_DSA)
2370 if (!DSA_sign(pkey->save_type,
2371 &(data[MD5_DIGEST_LENGTH]),
2372 SHA_DIGEST_LENGTH,&(p[2]),
2373 (unsigned int *)&j,pkey->pkey.dsa))
2375 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2383 #ifndef OPENSSL_NO_ECDSA
2384 if (pkey->type == EVP_PKEY_EC)
2386 if (!ECDSA_sign(pkey->save_type,
2387 &(data[MD5_DIGEST_LENGTH]),
2388 SHA_DIGEST_LENGTH,&(p[2]),
2389 (unsigned int *)&j,pkey->pkey.ec))
2391 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2401 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2404 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2407 s->state=SSL3_ST_CW_CERT_VRFY_B;
2408 s->init_num=(int)n+4;
2411 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2416 int ssl3_send_client_certificate(SSL *s)
2419 EVP_PKEY *pkey=NULL;
2423 if (s->state == SSL3_ST_CW_CERT_A)
2425 if ((s->cert == NULL) ||
2426 (s->cert->key->x509 == NULL) ||
2427 (s->cert->key->privatekey == NULL))
2428 s->state=SSL3_ST_CW_CERT_B;
2430 s->state=SSL3_ST_CW_CERT_C;
2433 /* We need to get a client cert */
2434 if (s->state == SSL3_ST_CW_CERT_B)
2436 /* If we get an error, we need to
2437 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2438 * We then get retied later */
2440 if (s->ctx->client_cert_cb != NULL)
2441 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2444 s->rwstate=SSL_X509_LOOKUP;
2447 s->rwstate=SSL_NOTHING;
2448 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2450 s->state=SSL3_ST_CW_CERT_B;
2451 if ( !SSL_use_certificate(s,x509) ||
2452 !SSL_use_PrivateKey(s,pkey))
2458 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2461 if (x509 != NULL) X509_free(x509);
2462 if (pkey != NULL) EVP_PKEY_free(pkey);
2465 if (s->version == SSL3_VERSION)
2467 s->s3->tmp.cert_req=0;
2468 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2473 s->s3->tmp.cert_req=2;
2477 /* Ok, we have a cert */
2478 s->state=SSL3_ST_CW_CERT_C;
2481 if (s->state == SSL3_ST_CW_CERT_C)
2483 s->state=SSL3_ST_CW_CERT_D;
2484 l=ssl3_output_cert_chain(s,
2485 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2489 /* SSL3_ST_CW_CERT_D */
2490 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2493 #define has_bits(i,m) (((i)&(m)) == (m))
2495 int ssl3_check_cert_and_algorithm(SSL *s)
2499 EVP_PKEY *pkey=NULL;
2501 #ifndef OPENSSL_NO_RSA
2504 #ifndef OPENSSL_NO_DH
2508 sc=s->session->sess_cert;
2510 algs=s->s3->tmp.new_cipher->algorithms;
2512 /* we don't have a certificate */
2513 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2518 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2522 #ifndef OPENSSL_NO_RSA
2523 rsa=s->session->sess_cert->peer_rsa_tmp;
2525 #ifndef OPENSSL_NO_DH
2526 dh=s->session->sess_cert->peer_dh_tmp;
2529 /* This is the passed certificate */
2531 idx=sc->peer_cert_type;
2532 #ifndef OPENSSL_NO_ECDH
2533 if (idx == SSL_PKEY_ECC)
2535 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2536 s->s3->tmp.new_cipher) == 0)
2537 { /* check failed */
2538 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2547 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2548 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2549 EVP_PKEY_free(pkey);
2552 /* Check that we have a certificate if we require one */
2553 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2555 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2558 #ifndef OPENSSL_NO_DSA
2559 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2561 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2565 #ifndef OPENSSL_NO_RSA
2566 if ((algs & SSL_kRSA) &&
2567 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2569 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2573 #ifndef OPENSSL_NO_DH
2574 if ((algs & SSL_kEDH) &&
2575 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2577 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2580 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2582 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2585 #ifndef OPENSSL_NO_DSA
2586 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2588 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2594 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2596 #ifndef OPENSSL_NO_RSA
2597 if (algs & SSL_kRSA)
2600 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2602 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2608 #ifndef OPENSSL_NO_DH
2609 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2612 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2614 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2621 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2627 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2633 #ifndef OPENSSL_NO_ECDH
2634 /* This is the complement of nid2curve_id in s3_srvr.c. */
2635 static int curve_id2nid(int curve_id)
2637 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2638 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2639 static int nid_list[26] =
2642 NID_sect163k1, /* sect163k1 (1) */
2643 NID_sect163r1, /* sect163r1 (2) */
2644 NID_sect163r2, /* sect163r2 (3) */
2645 NID_sect193r1, /* sect193r1 (4) */
2646 NID_sect193r2, /* sect193r2 (5) */
2647 NID_sect233k1, /* sect233k1 (6) */
2648 NID_sect233r1, /* sect233r1 (7) */
2649 NID_sect239k1, /* sect239k1 (8) */
2650 NID_sect283k1, /* sect283k1 (9) */
2651 NID_sect283r1, /* sect283r1 (10) */
2652 NID_sect409k1, /* sect409k1 (11) */
2653 NID_sect409r1, /* sect409r1 (12) */
2654 NID_sect571k1, /* sect571k1 (13) */
2655 NID_sect571r1, /* sect571r1 (14) */
2656 NID_secp160k1, /* secp160k1 (15) */
2657 NID_secp160r1, /* secp160r1 (16) */
2658 NID_secp160r2, /* secp160r2 (17) */
2659 NID_secp192k1, /* secp192k1 (18) */
2660 NID_X9_62_prime192v1, /* secp192r1 (19) */
2661 NID_secp224k1, /* secp224k1 (20) */
2662 NID_secp224r1, /* secp224r1 (21) */
2663 NID_secp256k1, /* secp256k1 (22) */
2664 NID_X9_62_prime256v1, /* secp256r1 (23) */
2665 NID_secp384r1, /* secp384r1 (24) */
2666 NID_secp521r1 /* secp521r1 (25) */
2669 if ((curve_id < 1) || (curve_id > 25)) return 0;
2671 return nid_list[curve_id];
2675 /* Check to see if handshake is full or resumed. Usually this is just a
2676 * case of checking to see if a cache hit has occurred. In the case of
2677 * session tickets we have to check the next message to be sure.
2680 #ifndef OPENSSL_NO_TLSEXT
2681 static int ssl3_check_finished(SSL *s)
2685 if (!s->session->tlsext_tick)
2687 /* this function is called when we really expect a Certificate
2688 * message, so permit appropriate message length */
2689 n=s->method->ssl_get_message(s,
2695 if (!ok) return((int)n);
2696 s->s3->tmp.reuse_message = 1;
2697 if ((s->s3->tmp.message_type == SSL3_MT_FINISHED)
2698 || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET))