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);
141 #ifndef OPENSSL_NO_ECDH
142 static int curve_id2nid(int curve_id);
143 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
146 static SSL_METHOD *ssl3_get_client_method(int ver)
148 if (ver == SSL3_VERSION)
149 return(SSLv3_client_method());
154 IMPLEMENT_ssl3_meth_func(SSLv3_client_method,
155 ssl_undefined_function,
157 ssl3_get_client_method)
159 int ssl3_connect(SSL *s)
162 unsigned long Time=(unsigned long)time(NULL),l;
164 void (*cb)(const SSL *ssl,int type,int val)=NULL;
166 int new_state,state,skip=0;;
168 RAND_add(&Time,sizeof(Time),0);
172 if (s->info_callback != NULL)
174 else if (s->ctx->info_callback != NULL)
175 cb=s->ctx->info_callback;
178 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
186 case SSL_ST_RENEGOTIATE:
188 s->state=SSL_ST_CONNECT;
189 s->ctx->stats.sess_connect_renegotiate++;
193 case SSL_ST_BEFORE|SSL_ST_CONNECT:
194 case SSL_ST_OK|SSL_ST_CONNECT:
197 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
199 if ((s->version & 0xff00 ) != 0x0300)
201 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
206 /* s->version=SSL3_VERSION; */
207 s->type=SSL_ST_CONNECT;
209 if (s->init_buf == NULL)
211 if ((buf=BUF_MEM_new()) == NULL)
216 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
225 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
227 /* setup buffing BIO */
228 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
230 /* don't push the buffering BIO quite yet */
232 ssl3_init_finished_mac(s);
234 s->state=SSL3_ST_CW_CLNT_HELLO_A;
235 s->ctx->stats.sess_connect++;
239 case SSL3_ST_CW_CLNT_HELLO_A:
240 case SSL3_ST_CW_CLNT_HELLO_B:
243 ret=ssl3_client_hello(s);
244 if (ret <= 0) goto end;
245 s->state=SSL3_ST_CR_SRVR_HELLO_A;
248 /* turn on buffering for the next lot of output */
249 if (s->bbio != s->wbio)
250 s->wbio=BIO_push(s->bbio,s->wbio);
254 case SSL3_ST_CR_SRVR_HELLO_A:
255 case SSL3_ST_CR_SRVR_HELLO_B:
256 ret=ssl3_get_server_hello(s);
257 if (ret <= 0) goto end;
259 s->state=SSL3_ST_CR_FINISHED_A;
261 s->state=SSL3_ST_CR_CERT_A;
265 case SSL3_ST_CR_CERT_A:
266 case SSL3_ST_CR_CERT_B:
267 /* Check if it is anon DH/ECDH */
268 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
270 ret=ssl3_get_server_certificate(s);
271 if (ret <= 0) goto end;
275 s->state=SSL3_ST_CR_KEY_EXCH_A;
279 case SSL3_ST_CR_KEY_EXCH_A:
280 case SSL3_ST_CR_KEY_EXCH_B:
281 ret=ssl3_get_key_exchange(s);
282 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CR_CERT_REQ_A;
286 /* at this point we check that we have the
287 * required stuff from the server */
288 if (!ssl3_check_cert_and_algorithm(s))
295 case SSL3_ST_CR_CERT_REQ_A:
296 case SSL3_ST_CR_CERT_REQ_B:
297 ret=ssl3_get_certificate_request(s);
298 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CR_SRVR_DONE_A;
303 case SSL3_ST_CR_SRVR_DONE_A:
304 case SSL3_ST_CR_SRVR_DONE_B:
305 ret=ssl3_get_server_done(s);
306 if (ret <= 0) goto end;
307 if (s->s3->tmp.cert_req)
308 s->state=SSL3_ST_CW_CERT_A;
310 s->state=SSL3_ST_CW_KEY_EXCH_A;
315 case SSL3_ST_CW_CERT_A:
316 case SSL3_ST_CW_CERT_B:
317 case SSL3_ST_CW_CERT_C:
318 case SSL3_ST_CW_CERT_D:
319 ret=ssl3_send_client_certificate(s);
320 if (ret <= 0) goto end;
321 s->state=SSL3_ST_CW_KEY_EXCH_A;
325 case SSL3_ST_CW_KEY_EXCH_A:
326 case SSL3_ST_CW_KEY_EXCH_B:
327 ret=ssl3_send_client_key_exchange(s);
328 if (ret <= 0) goto end;
329 l=s->s3->tmp.new_cipher->algorithms;
330 /* EAY EAY EAY need to check for DH fix cert
332 /* For TLS, cert_req is set to 2, so a cert chain
333 * of nothing is sent, but no verify packet is sent */
334 /* XXX: For now, we do not support client
335 * authentication in ECDH cipher suites with
336 * ECDH (rather than ECDSA) certificates.
337 * We need to skip the certificate verify
338 * message when client's ECDH public key is sent
339 * inside the client certificate.
341 if (s->s3->tmp.cert_req == 1)
343 s->state=SSL3_ST_CW_CERT_VRFY_A;
347 s->state=SSL3_ST_CW_CHANGE_A;
348 s->s3->change_cipher_spec=0;
354 case SSL3_ST_CW_CERT_VRFY_A:
355 case SSL3_ST_CW_CERT_VRFY_B:
356 ret=ssl3_send_client_verify(s);
357 if (ret <= 0) goto end;
358 s->state=SSL3_ST_CW_CHANGE_A;
360 s->s3->change_cipher_spec=0;
363 case SSL3_ST_CW_CHANGE_A:
364 case SSL3_ST_CW_CHANGE_B:
365 ret=ssl3_send_change_cipher_spec(s,
366 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
367 if (ret <= 0) goto end;
368 s->state=SSL3_ST_CW_FINISHED_A;
371 s->session->cipher=s->s3->tmp.new_cipher;
372 #ifdef OPENSSL_NO_COMP
373 s->session->compress_meth=0;
375 if (s->s3->tmp.new_compression == NULL)
376 s->session->compress_meth=0;
378 s->session->compress_meth=
379 s->s3->tmp.new_compression->id;
381 if (!s->method->ssl3_enc->setup_key_block(s))
387 if (!s->method->ssl3_enc->change_cipher_state(s,
388 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
396 case SSL3_ST_CW_FINISHED_A:
397 case SSL3_ST_CW_FINISHED_B:
398 ret=ssl3_send_finished(s,
399 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
400 s->method->ssl3_enc->client_finished_label,
401 s->method->ssl3_enc->client_finished_label_len);
402 if (ret <= 0) goto end;
403 s->state=SSL3_ST_CW_FLUSH;
406 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
409 s->s3->tmp.next_state=SSL_ST_OK;
410 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
413 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
414 s->s3->delay_buf_pop_ret=0;
419 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
424 case SSL3_ST_CR_FINISHED_A:
425 case SSL3_ST_CR_FINISHED_B:
427 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
428 SSL3_ST_CR_FINISHED_B);
429 if (ret <= 0) goto end;
432 s->state=SSL3_ST_CW_CHANGE_A;
438 case SSL3_ST_CW_FLUSH:
439 /* number of bytes to be flushed */
440 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
443 s->rwstate=SSL_WRITING;
444 num1=BIO_flush(s->wbio);
445 if (num1 <= 0) { ret= -1; goto end; }
446 s->rwstate=SSL_NOTHING;
449 s->state=s->s3->tmp.next_state;
453 /* clean a few things up */
454 ssl3_cleanup_key_block(s);
456 if (s->init_buf != NULL)
458 BUF_MEM_free(s->init_buf);
462 /* If we are not 'joining' the last two packets,
463 * remove the buffering now */
464 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
465 ssl_free_wbio_buffer(s);
466 /* else do it later in ssl3_write */
471 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
472 if (s->hit) s->ctx->stats.sess_hit++;
476 s->handshake_func=ssl3_connect;
477 s->ctx->stats.sess_connect_good++;
479 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
485 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
491 /* did we do anything */
492 if (!s->s3->tmp.reuse_message && !skip)
496 if ((ret=BIO_flush(s->wbio)) <= 0)
500 if ((cb != NULL) && (s->state != state))
504 cb(s,SSL_CB_CONNECT_LOOP,1);
515 cb(s,SSL_CB_CONNECT_EXIT,ret);
520 int ssl3_client_hello(SSL *s)
525 unsigned long Time,l;
526 #ifndef OPENSSL_NO_COMP
531 buf=(unsigned char *)s->init_buf->data;
532 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
534 if ((s->session == NULL) ||
535 (s->session->ssl_version != s->version) ||
536 (s->session->not_resumable))
538 if (!ssl_get_new_session(s,0))
541 /* else use the pre-loaded session */
543 p=s->s3->client_random;
544 Time=(unsigned long)time(NULL); /* Time */
546 if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0)
549 /* Do the message type and length last */
552 *(p++)=s->version>>8;
553 *(p++)=s->version&0xff;
554 s->client_version=s->version;
557 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
564 i=s->session->session_id_length;
568 if (i > (int)sizeof(s->session->session_id))
570 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
573 memcpy(p,s->session->session_id,i);
577 /* Ciphers supported */
578 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
581 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
588 #ifdef OPENSSL_NO_COMP
591 if (s->ctx->comp_methods == NULL)
594 j=sk_SSL_COMP_num(s->ctx->comp_methods);
598 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
602 *(p++)=0; /* Add the NULL method */
606 *(d++)=SSL3_MT_CLIENT_HELLO;
609 s->state=SSL3_ST_CW_CLNT_HELLO_B;
610 /* number of bytes to write */
615 /* SSL3_ST_CW_CLNT_HELLO_B */
616 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
621 int ssl3_get_server_hello(SSL *s)
623 STACK_OF(SSL_CIPHER) *sk;
629 #ifndef OPENSSL_NO_COMP
633 n=s->method->ssl_get_message(s,
634 SSL3_ST_CR_SRVR_HELLO_A,
635 SSL3_ST_CR_SRVR_HELLO_B,
640 if (!ok) return((int)n);
642 if ( SSL_version(s) == DTLS1_VERSION)
644 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
646 if ( s->d1->send_cookie == 0)
648 s->s3->tmp.reuse_message = 1;
651 else /* already sent a cookie */
653 al=SSL_AD_UNEXPECTED_MESSAGE;
654 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
660 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
662 al=SSL_AD_UNEXPECTED_MESSAGE;
663 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
667 d=p=(unsigned char *)s->init_msg;
669 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
671 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
672 s->version=(s->version&0xff00)|p[1];
673 al=SSL_AD_PROTOCOL_VERSION;
678 /* load the server hello data */
679 /* load the server random */
680 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
683 /* get the session-id */
686 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
688 al=SSL_AD_ILLEGAL_PARAMETER;
689 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
693 if (j != 0 && j == s->session->session_id_length
694 && memcmp(p,s->session->session_id,j) == 0)
696 if(s->sid_ctx_length != s->session->sid_ctx_length
697 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
699 /* actually a client application bug */
700 al=SSL_AD_ILLEGAL_PARAMETER;
701 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
706 else /* a miss or crap from the other end */
708 /* If we were trying for session-id reuse, make a new
709 * SSL_SESSION so we don't stuff up other people */
711 if (s->session->session_id_length > 0)
713 if (!ssl_get_new_session(s,0))
715 al=SSL_AD_INTERNAL_ERROR;
719 s->session->session_id_length=j;
720 memcpy(s->session->session_id,p,j); /* j could be 0 */
723 c=ssl_get_cipher_by_char(s,p);
727 al=SSL_AD_ILLEGAL_PARAMETER;
728 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
731 p+=ssl_put_cipher_by_char(s,NULL,NULL);
733 sk=ssl_get_ciphers_by_id(s);
734 i=sk_SSL_CIPHER_find(sk,c);
737 /* we did not say we would use this cipher */
738 al=SSL_AD_ILLEGAL_PARAMETER;
739 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
743 /* Depending on the session caching (internal/external), the cipher
744 and/or cipher_id values may not be set. Make sure that
745 cipher_id is set and use it for comparison. */
746 if (s->session->cipher)
747 s->session->cipher_id = s->session->cipher->id;
748 if (s->hit && (s->session->cipher_id != c->id))
751 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
753 al=SSL_AD_ILLEGAL_PARAMETER;
754 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
758 s->s3->tmp.new_cipher=c;
760 /* lets get the compression algorithm */
762 #ifdef OPENSSL_NO_COMP
765 al=SSL_AD_ILLEGAL_PARAMETER;
766 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
774 comp=ssl3_comp_find(s->ctx->comp_methods,j);
776 if ((j != 0) && (comp == NULL))
778 al=SSL_AD_ILLEGAL_PARAMETER;
779 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
784 s->s3->tmp.new_compression=comp;
790 /* wrong packet length */
791 al=SSL_AD_DECODE_ERROR;
792 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
798 ssl3_send_alert(s,SSL3_AL_FATAL,al);
803 int ssl3_get_server_certificate(SSL *s)
806 unsigned long n,nc,llen,l;
808 const unsigned char *q,*p;
810 STACK_OF(X509) *sk=NULL;
813 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
815 n=s->method->ssl_get_message(s,
822 if (!ok) return((int)n);
824 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
826 s->s3->tmp.reuse_message=1;
830 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
832 al=SSL_AD_UNEXPECTED_MESSAGE;
833 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
836 p=d=(unsigned char *)s->init_msg;
838 if ((sk=sk_X509_new_null()) == NULL)
840 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
847 al=SSL_AD_DECODE_ERROR;
848 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
851 for (nc=0; nc<llen; )
856 al=SSL_AD_DECODE_ERROR;
857 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
862 x=d2i_X509(NULL,&q,l);
865 al=SSL_AD_BAD_CERTIFICATE;
866 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
871 al=SSL_AD_DECODE_ERROR;
872 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
875 if (!sk_X509_push(sk,x))
877 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
885 i=ssl_verify_cert_chain(s,sk);
886 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
887 #ifndef OPENSSL_NO_KRB5
888 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
889 != (SSL_aKRB5|SSL_kKRB5)
890 #endif /* OPENSSL_NO_KRB5 */
893 al=ssl_verify_alarm_type(s->verify_result);
894 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
897 ERR_clear_error(); /* but we keep s->verify_result */
899 sc=ssl_sess_cert_new();
900 if (sc == NULL) goto err;
902 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
903 s->session->sess_cert=sc;
906 /* Inconsistency alert: cert_chain does include the peer's
907 * certificate, which we don't include in s3_srvr.c */
908 x=sk_X509_value(sk,0);
910 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
912 pkey=X509_get_pubkey(x);
914 /* VRS: allow null cert if auth == KRB5 */
915 need_cert = ((s->s3->tmp.new_cipher->algorithms
916 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
917 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
920 printf("pkey,x = %p, %p\n", pkey,x);
921 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
922 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
923 s->s3->tmp.new_cipher->algorithms, need_cert);
924 #endif /* KSSL_DEBUG */
926 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
930 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
931 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
935 i=ssl_cert_type(x,pkey);
936 if (need_cert && i < 0)
940 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
941 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
947 sc->peer_cert_type=i;
948 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
949 /* Why would the following ever happen?
950 * We just created sc a couple of lines ago. */
951 if (sc->peer_pkeys[i].x509 != NULL)
952 X509_free(sc->peer_pkeys[i].x509);
953 sc->peer_pkeys[i].x509=x;
954 sc->peer_key= &(sc->peer_pkeys[i]);
956 if (s->session->peer != NULL)
957 X509_free(s->session->peer);
958 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
963 sc->peer_cert_type=i;
966 if (s->session->peer != NULL)
967 X509_free(s->session->peer);
968 s->session->peer=NULL;
970 s->session->verify_result = s->verify_result;
978 ssl3_send_alert(s,SSL3_AL_FATAL,al);
983 sk_X509_pop_free(sk,X509_free);
987 int ssl3_get_key_exchange(SSL *s)
989 #ifndef OPENSSL_NO_RSA
990 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
993 unsigned char *param,*p;
994 int al,i,j,param_len,ok;
997 #ifndef OPENSSL_NO_RSA
1000 #ifndef OPENSSL_NO_DH
1003 #ifndef OPENSSL_NO_ECDH
1004 EC_KEY *ecdh = NULL;
1005 BN_CTX *bn_ctx = NULL;
1006 EC_POINT *srvr_ecpoint = NULL;
1008 int encoded_pt_len = 0;
1011 /* use same message size as in ssl3_get_certificate_request()
1012 * as ServerKeyExchange message may be skipped */
1013 n=s->method->ssl_get_message(s,
1014 SSL3_ST_CR_KEY_EXCH_A,
1015 SSL3_ST_CR_KEY_EXCH_B,
1020 if (!ok) return((int)n);
1022 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1024 s->s3->tmp.reuse_message=1;
1028 param=p=(unsigned char *)s->init_msg;
1030 if (s->session->sess_cert != NULL)
1032 #ifndef OPENSSL_NO_RSA
1033 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1035 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1036 s->session->sess_cert->peer_rsa_tmp=NULL;
1039 #ifndef OPENSSL_NO_DH
1040 if (s->session->sess_cert->peer_dh_tmp)
1042 DH_free(s->session->sess_cert->peer_dh_tmp);
1043 s->session->sess_cert->peer_dh_tmp=NULL;
1046 #ifndef OPENSSL_NO_ECDH
1047 if (s->session->sess_cert->peer_ecdh_tmp)
1049 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1050 s->session->sess_cert->peer_ecdh_tmp=NULL;
1056 s->session->sess_cert=ssl_sess_cert_new();
1060 alg=s->s3->tmp.new_cipher->algorithms;
1061 EVP_MD_CTX_init(&md_ctx);
1063 #ifndef OPENSSL_NO_RSA
1066 if ((rsa=RSA_new()) == NULL)
1068 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1075 al=SSL_AD_DECODE_ERROR;
1076 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1079 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1081 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1090 al=SSL_AD_DECODE_ERROR;
1091 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1094 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1096 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1102 /* this should be because we are using an export cipher */
1104 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1107 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1110 s->session->sess_cert->peer_rsa_tmp=rsa;
1113 #else /* OPENSSL_NO_RSA */
1117 #ifndef OPENSSL_NO_DH
1118 else if (alg & SSL_kEDH)
1120 if ((dh=DH_new()) == NULL)
1122 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1129 al=SSL_AD_DECODE_ERROR;
1130 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1133 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1135 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1144 al=SSL_AD_DECODE_ERROR;
1145 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1148 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1150 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1159 al=SSL_AD_DECODE_ERROR;
1160 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1163 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1165 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1171 #ifndef OPENSSL_NO_RSA
1173 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1178 #ifndef OPENSSL_NO_DSA
1179 else if (alg & SSL_aDSS)
1180 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1182 /* else anonymous DH, so no certificate or pkey. */
1184 s->session->sess_cert->peer_dh_tmp=dh;
1187 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1189 al=SSL_AD_ILLEGAL_PARAMETER;
1190 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1193 #endif /* !OPENSSL_NO_DH */
1195 #ifndef OPENSSL_NO_ECDH
1196 else if (alg & SSL_kECDHE)
1199 const EC_GROUP *group;
1201 if ((ecdh=EC_KEY_new()) == NULL)
1203 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1207 /* Extract elliptic curve parameters and the
1208 * server's ephemeral ECDH public key.
1209 * Keep accumulating lengths of various components in
1210 * param_len and make sure it never exceeds n.
1213 /* XXX: For now we only support named (not generic) curves
1214 * and the ECParameters in this case is just two bytes.
1217 if ((param_len > n) ||
1218 (*p != NAMED_CURVE_TYPE) ||
1219 ((curve_nid = curve_id2nid(*(p + 1))) == 0))
1221 al=SSL_AD_INTERNAL_ERROR;
1222 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1226 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1229 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1232 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1234 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1237 EC_GROUP_free(ngroup);
1239 group = EC_KEY_get0_group(ecdh);
1241 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1242 (EC_GROUP_get_degree(group) > 163))
1244 al=SSL_AD_EXPORT_RESTRICTION;
1245 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1251 /* Next, get the encoded ECPoint */
1252 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1253 ((bn_ctx = BN_CTX_new()) == NULL))
1255 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1259 encoded_pt_len = *p; /* length of encoded point */
1261 param_len += (1 + encoded_pt_len);
1262 if ((param_len > n) ||
1263 (EC_POINT_oct2point(group, srvr_ecpoint,
1264 p, encoded_pt_len, bn_ctx) == 0))
1266 al=SSL_AD_DECODE_ERROR;
1267 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1274 /* The ECC/TLS specification does not mention
1275 * the use of DSA to sign ECParameters in the server
1276 * key exchange message. We do support RSA and ECDSA.
1279 #ifndef OPENSSL_NO_RSA
1280 else if (alg & SSL_aRSA)
1281 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1283 #ifndef OPENSSL_NO_ECDSA
1284 else if (alg & SSL_aECDSA)
1285 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1287 /* else anonymous ECDH, so no certificate or pkey. */
1288 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1289 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1291 BN_CTX_free(bn_ctx);
1292 EC_POINT_free(srvr_ecpoint);
1293 srvr_ecpoint = NULL;
1295 else if (alg & SSL_kECDH)
1297 al=SSL_AD_UNEXPECTED_MESSAGE;
1298 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1301 #endif /* !OPENSSL_NO_ECDH */
1304 al=SSL_AD_HANDSHAKE_FAILURE;
1305 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1310 /* p points to the next byte, there are 'n' bytes left */
1312 /* if it was signed, check the signature */
1317 j=EVP_PKEY_size(pkey);
1319 if ((i != n) || (n > j) || (n <= 0))
1321 /* wrong packet length */
1322 al=SSL_AD_DECODE_ERROR;
1323 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1327 #ifndef OPENSSL_NO_RSA
1328 if (pkey->type == EVP_PKEY_RSA)
1334 for (num=2; num > 0; num--)
1336 EVP_DigestInit_ex(&md_ctx,(num == 2)
1337 ?s->ctx->md5:s->ctx->sha1, NULL);
1338 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1339 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1340 EVP_DigestUpdate(&md_ctx,param,param_len);
1341 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1345 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1349 al=SSL_AD_DECRYPT_ERROR;
1350 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1356 al=SSL_AD_DECRYPT_ERROR;
1357 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1363 #ifndef OPENSSL_NO_DSA
1364 if (pkey->type == EVP_PKEY_DSA)
1367 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1368 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1369 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1370 EVP_VerifyUpdate(&md_ctx,param,param_len);
1371 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1374 al=SSL_AD_DECRYPT_ERROR;
1375 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1381 #ifndef OPENSSL_NO_ECDSA
1382 if (pkey->type == EVP_PKEY_EC)
1384 /* let's do ECDSA */
1385 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1386 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1387 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1388 EVP_VerifyUpdate(&md_ctx,param,param_len);
1389 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1392 al=SSL_AD_DECRYPT_ERROR;
1393 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1400 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1406 /* still data left over */
1407 if (!(alg & SSL_aNULL))
1409 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1414 al=SSL_AD_DECODE_ERROR;
1415 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1419 EVP_PKEY_free(pkey);
1420 EVP_MD_CTX_cleanup(&md_ctx);
1423 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1425 EVP_PKEY_free(pkey);
1426 #ifndef OPENSSL_NO_RSA
1430 #ifndef OPENSSL_NO_DH
1434 #ifndef OPENSSL_NO_ECDH
1435 BN_CTX_free(bn_ctx);
1436 EC_POINT_free(srvr_ecpoint);
1440 EVP_MD_CTX_cleanup(&md_ctx);
1444 int ssl3_get_certificate_request(SSL *s)
1447 unsigned long n,nc,l;
1448 unsigned int llen,ctype_num,i;
1450 const unsigned char *p,*q;
1452 STACK_OF(X509_NAME) *ca_sk=NULL;
1454 n=s->method->ssl_get_message(s,
1455 SSL3_ST_CR_CERT_REQ_A,
1456 SSL3_ST_CR_CERT_REQ_B,
1461 if (!ok) return((int)n);
1463 s->s3->tmp.cert_req=0;
1465 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1467 s->s3->tmp.reuse_message=1;
1471 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1473 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1474 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1478 /* TLS does not like anon-DH with client cert */
1479 if (s->version > SSL3_VERSION)
1481 l=s->s3->tmp.new_cipher->algorithms;
1484 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1485 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1490 p=d=(unsigned char *)s->init_msg;
1492 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1494 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1498 /* get the certificate types */
1500 if (ctype_num > SSL3_CT_NUMBER)
1501 ctype_num=SSL3_CT_NUMBER;
1502 for (i=0; i<ctype_num; i++)
1503 s->s3->tmp.ctype[i]= p[i];
1506 /* get the CA RDNs */
1511 out=fopen("/tmp/vsign.der","w");
1512 fwrite(p,1,llen,out);
1517 if ((llen+ctype_num+2+1) != n)
1519 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1520 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1524 for (nc=0; nc<llen; )
1527 if ((l+nc+2) > llen)
1529 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1530 goto cont; /* netscape bugs */
1531 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1532 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1538 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1540 /* If netscape tolerance is on, ignore errors */
1541 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1545 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1546 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1553 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1554 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1557 if (!sk_X509_NAME_push(ca_sk,xn))
1559 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1573 /* we should setup a certificate to return.... */
1574 s->s3->tmp.cert_req=1;
1575 s->s3->tmp.ctype_num=ctype_num;
1576 if (s->s3->tmp.ca_names != NULL)
1577 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1578 s->s3->tmp.ca_names=ca_sk;
1583 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1587 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1589 return(X509_NAME_cmp(*a,*b));
1592 int ssl3_get_server_done(SSL *s)
1597 n=s->method->ssl_get_message(s,
1598 SSL3_ST_CR_SRVR_DONE_A,
1599 SSL3_ST_CR_SRVR_DONE_B,
1600 SSL3_MT_SERVER_DONE,
1601 30, /* should be very small, like 0 :-) */
1604 if (!ok) return((int)n);
1607 /* should contain no data */
1608 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1609 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1617 #ifndef OPENSSL_NO_ECDH
1618 static const int KDF1_SHA1_len = 20;
1619 static void *KDF1_SHA1(const void *in, size_t inlen, void *out, size_t *outlen)
1621 #ifndef OPENSSL_NO_SHA
1622 if (*outlen < SHA_DIGEST_LENGTH)
1625 *outlen = SHA_DIGEST_LENGTH;
1626 return SHA1(in, inlen, out);
1629 #endif /* OPENSSL_NO_SHA */
1631 #endif /* OPENSSL_NO_ECDH */
1633 int ssl3_send_client_key_exchange(SSL *s)
1635 unsigned char *p,*d;
1638 #ifndef OPENSSL_NO_RSA
1640 EVP_PKEY *pkey=NULL;
1642 #ifndef OPENSSL_NO_KRB5
1644 #endif /* OPENSSL_NO_KRB5 */
1645 #ifndef OPENSSL_NO_ECDH
1646 EC_KEY *clnt_ecdh = NULL;
1647 const EC_POINT *srvr_ecpoint = NULL;
1648 EVP_PKEY *srvr_pub_pkey = NULL;
1649 unsigned char *encodedPoint = NULL;
1650 int encoded_pt_len = 0;
1651 BN_CTX * bn_ctx = NULL;
1654 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1656 d=(unsigned char *)s->init_buf->data;
1659 l=s->s3->tmp.new_cipher->algorithms;
1661 /* Fool emacs indentation */
1663 #ifndef OPENSSL_NO_RSA
1664 else if (l & SSL_kRSA)
1667 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1669 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1670 rsa=s->session->sess_cert->peer_rsa_tmp;
1673 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1674 if ((pkey == NULL) ||
1675 (pkey->type != EVP_PKEY_RSA) ||
1676 (pkey->pkey.rsa == NULL))
1678 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1682 EVP_PKEY_free(pkey);
1685 tmp_buf[0]=s->client_version>>8;
1686 tmp_buf[1]=s->client_version&0xff;
1687 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1690 s->session->master_key_length=sizeof tmp_buf;
1693 /* Fix buf for TLS and beyond */
1694 if (s->version > SSL3_VERSION)
1696 n=RSA_public_encrypt(sizeof tmp_buf,
1697 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1699 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1700 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1704 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1708 /* Fix buf for TLS and beyond */
1709 if (s->version > SSL3_VERSION)
1715 s->session->master_key_length=
1716 s->method->ssl3_enc->generate_master_secret(s,
1717 s->session->master_key,
1718 tmp_buf,sizeof tmp_buf);
1719 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1722 #ifndef OPENSSL_NO_KRB5
1723 else if (l & SSL_kKRB5)
1725 krb5_error_code krb5rc;
1726 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1727 /* krb5_data krb5_ap_req; */
1728 krb5_data *enc_ticket;
1729 krb5_data authenticator, *authp = NULL;
1730 EVP_CIPHER_CTX ciph_ctx;
1731 EVP_CIPHER *enc = NULL;
1732 unsigned char iv[EVP_MAX_IV_LENGTH];
1733 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1734 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1735 + EVP_MAX_IV_LENGTH];
1736 int padl, outl = sizeof(epms);
1738 EVP_CIPHER_CTX_init(&ciph_ctx);
1741 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1743 #endif /* KSSL_DEBUG */
1747 if (KRB5SENDAUTH) authp = &authenticator;
1748 #endif /* KRB5SENDAUTH */
1750 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1752 enc = kssl_map_enc(kssl_ctx->enctype);
1757 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1758 if (krb5rc && kssl_err.text)
1759 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1761 #endif /* KSSL_DEBUG */
1765 ssl3_send_alert(s,SSL3_AL_FATAL,
1766 SSL_AD_HANDSHAKE_FAILURE);
1767 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1772 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1773 ** in place of RFC 2712 KerberosWrapper, as in:
1775 ** Send ticket (copy to *p, set n = length)
1776 ** n = krb5_ap_req.length;
1777 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1778 ** if (krb5_ap_req.data)
1779 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1781 ** Now using real RFC 2712 KerberosWrapper
1782 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1783 ** Note: 2712 "opaque" types are here replaced
1784 ** with a 2-byte length followed by the value.
1786 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1787 ** Where "xx xx" = length bytes. Shown here with
1788 ** optional authenticator omitted.
1791 /* KerberosWrapper.Ticket */
1792 s2n(enc_ticket->length,p);
1793 memcpy(p, enc_ticket->data, enc_ticket->length);
1794 p+= enc_ticket->length;
1795 n = enc_ticket->length + 2;
1797 /* KerberosWrapper.Authenticator */
1798 if (authp && authp->length)
1800 s2n(authp->length,p);
1801 memcpy(p, authp->data, authp->length);
1803 n+= authp->length + 2;
1811 s2n(0,p);/* null authenticator length */
1815 if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
1818 /* 20010420 VRS. Tried it this way; failed.
1819 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1820 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1821 ** kssl_ctx->length);
1822 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1825 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1826 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1828 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1830 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1832 if (outl > sizeof epms)
1834 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1837 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1839 /* KerberosWrapper.EncryptedPreMasterSecret */
1841 memcpy(p, epms, outl);
1845 s->session->master_key_length=
1846 s->method->ssl3_enc->generate_master_secret(s,
1847 s->session->master_key,
1848 tmp_buf, sizeof tmp_buf);
1850 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
1851 OPENSSL_cleanse(epms, outl);
1854 #ifndef OPENSSL_NO_DH
1855 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1857 DH *dh_srvr,*dh_clnt;
1859 if (s->session->sess_cert->peer_dh_tmp != NULL)
1860 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1863 /* we get them from the cert */
1864 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1865 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1869 /* generate a new random key */
1870 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1872 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1875 if (!DH_generate_key(dh_clnt))
1877 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1881 /* use the 'p' output buffer for the DH key, but
1882 * make sure to clear it out afterwards */
1884 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1888 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1892 /* generate master key from the result */
1893 s->session->master_key_length=
1894 s->method->ssl3_enc->generate_master_secret(s,
1895 s->session->master_key,p,n);
1899 /* send off the data */
1900 n=BN_num_bytes(dh_clnt->pub_key);
1902 BN_bn2bin(dh_clnt->pub_key,p);
1907 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1911 #ifndef OPENSSL_NO_ECDH
1912 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
1914 const EC_GROUP *srvr_group = NULL;
1916 int ecdh_clnt_cert = 0;
1919 /* Did we send out the client's
1920 * ECDH share for use in premaster
1921 * computation as part of client certificate?
1922 * If so, set ecdh_clnt_cert to 1.
1924 if ((l & SSL_kECDH) && (s->cert != NULL))
1926 /* XXX: For now, we do not support client
1927 * authentication using ECDH certificates.
1928 * To add such support, one needs to add
1929 * code that checks for appropriate
1930 * conditions and sets ecdh_clnt_cert to 1.
1931 * For example, the cert have an ECC
1932 * key on the same curve as the server's
1933 * and the key should be authorized for
1936 * One also needs to add code in ssl3_connect
1937 * to skip sending the certificate verify
1940 * if ((s->cert->key->privatekey != NULL) &&
1941 * (s->cert->key->privatekey->type ==
1942 * EVP_PKEY_EC) && ...)
1943 * ecdh_clnt_cert = 1;
1947 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
1949 tkey = s->session->sess_cert->peer_ecdh_tmp;
1953 /* Get the Server Public Key from Cert */
1954 srvr_pub_pkey = X509_get_pubkey(s->session-> \
1955 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1956 if ((srvr_pub_pkey == NULL) ||
1957 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
1958 (srvr_pub_pkey->pkey.ec == NULL))
1960 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1961 ERR_R_INTERNAL_ERROR);
1965 tkey = srvr_pub_pkey->pkey.ec;
1968 srvr_group = EC_KEY_get0_group(tkey);
1969 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
1971 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
1973 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1974 ERR_R_INTERNAL_ERROR);
1978 if ((clnt_ecdh=EC_KEY_new()) == NULL)
1980 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1984 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
1986 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
1991 /* Reuse key info from our certificate
1992 * We only need our private key to perform
1993 * the ECDH computation.
1995 const BIGNUM *priv_key;
1996 tkey = s->cert->key->privatekey->pkey.ec;
1997 priv_key = EC_KEY_get0_private_key(tkey);
1998 if (priv_key == NULL)
2000 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2003 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2005 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2011 /* Generate a new ECDH key pair */
2012 if (!(EC_KEY_generate_key(clnt_ecdh)))
2014 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2019 /* use the 'p' output buffer for the ECDH key, but
2020 * make sure to clear it out afterwards
2023 field_size = EC_GROUP_get_degree(srvr_group);
2024 if (field_size <= 0)
2026 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2030 /* If field size is not more than 24 octets, then use SHA-1 hash of result;
2031 * otherwise, use result (see section 4.8 of draft-ietf-tls-ecc-03.txt;
2032 * this is new with this version of the Internet Draft).
2034 if (field_size <= 24 * 8)
2035 n=ECDH_compute_key(p, KDF1_SHA1_len, srvr_ecpoint, clnt_ecdh, KDF1_SHA1);
2037 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2040 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2045 /* generate master key from the result */
2046 s->session->master_key_length = s->method->ssl3_enc \
2047 -> generate_master_secret(s,
2048 s->session->master_key,
2051 memset(p, 0, n); /* clean up */
2055 /* Send empty client key exch message */
2060 /* First check the size of encoding and
2061 * allocate memory accordingly.
2064 EC_POINT_point2oct(srvr_group,
2065 EC_KEY_get0_public_key(clnt_ecdh),
2066 POINT_CONVERSION_UNCOMPRESSED,
2069 encodedPoint = (unsigned char *)
2070 OPENSSL_malloc(encoded_pt_len *
2071 sizeof(unsigned char));
2072 bn_ctx = BN_CTX_new();
2073 if ((encodedPoint == NULL) ||
2076 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2080 /* Encode the public key */
2081 n = EC_POINT_point2oct(srvr_group,
2082 EC_KEY_get0_public_key(clnt_ecdh),
2083 POINT_CONVERSION_UNCOMPRESSED,
2084 encodedPoint, encoded_pt_len, bn_ctx);
2086 *p = n; /* length of encoded point */
2087 /* Encoded point will be copied here */
2089 /* copy the point */
2090 memcpy((unsigned char *)p, encodedPoint, n);
2091 /* increment n to account for length field */
2095 /* Free allocated memory */
2096 BN_CTX_free(bn_ctx);
2097 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2098 if (clnt_ecdh != NULL)
2099 EC_KEY_free(clnt_ecdh);
2100 EVP_PKEY_free(srvr_pub_pkey);
2102 #endif /* !OPENSSL_NO_ECDH */
2105 ssl3_send_alert(s, SSL3_AL_FATAL,
2106 SSL_AD_HANDSHAKE_FAILURE);
2107 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2108 ERR_R_INTERNAL_ERROR);
2112 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2115 s->state=SSL3_ST_CW_KEY_EXCH_B;
2116 /* number of bytes to write */
2121 /* SSL3_ST_CW_KEY_EXCH_B */
2122 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2124 #ifndef OPENSSL_NO_ECDH
2125 BN_CTX_free(bn_ctx);
2126 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2127 if (clnt_ecdh != NULL)
2128 EC_KEY_free(clnt_ecdh);
2129 EVP_PKEY_free(srvr_pub_pkey);
2134 int ssl3_send_client_verify(SSL *s)
2136 unsigned char *p,*d;
2137 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2139 #ifndef OPENSSL_NO_RSA
2143 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2147 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2149 d=(unsigned char *)s->init_buf->data;
2151 pkey=s->cert->key->privatekey;
2153 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2154 &(data[MD5_DIGEST_LENGTH]));
2156 #ifndef OPENSSL_NO_RSA
2157 if (pkey->type == EVP_PKEY_RSA)
2159 s->method->ssl3_enc->cert_verify_mac(s,
2160 &(s->s3->finish_dgst1),&(data[0]));
2161 if (RSA_sign(NID_md5_sha1, data,
2162 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2163 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2165 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2173 #ifndef OPENSSL_NO_DSA
2174 if (pkey->type == EVP_PKEY_DSA)
2176 if (!DSA_sign(pkey->save_type,
2177 &(data[MD5_DIGEST_LENGTH]),
2178 SHA_DIGEST_LENGTH,&(p[2]),
2179 (unsigned int *)&j,pkey->pkey.dsa))
2181 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2189 #ifndef OPENSSL_NO_ECDSA
2190 if (pkey->type == EVP_PKEY_EC)
2192 if (!ECDSA_sign(pkey->save_type,
2193 &(data[MD5_DIGEST_LENGTH]),
2194 SHA_DIGEST_LENGTH,&(p[2]),
2195 (unsigned int *)&j,pkey->pkey.ec))
2197 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2207 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2210 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2213 s->state=SSL3_ST_CW_CERT_VRFY_B;
2214 s->init_num=(int)n+4;
2217 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2222 int ssl3_send_client_certificate(SSL *s)
2225 EVP_PKEY *pkey=NULL;
2229 if (s->state == SSL3_ST_CW_CERT_A)
2231 if ((s->cert == NULL) ||
2232 (s->cert->key->x509 == NULL) ||
2233 (s->cert->key->privatekey == NULL))
2234 s->state=SSL3_ST_CW_CERT_B;
2236 s->state=SSL3_ST_CW_CERT_C;
2239 /* We need to get a client cert */
2240 if (s->state == SSL3_ST_CW_CERT_B)
2242 /* If we get an error, we need to
2243 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2244 * We then get retied later */
2246 if (s->ctx->client_cert_cb != NULL)
2247 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2250 s->rwstate=SSL_X509_LOOKUP;
2253 s->rwstate=SSL_NOTHING;
2254 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2256 s->state=SSL3_ST_CW_CERT_B;
2257 if ( !SSL_use_certificate(s,x509) ||
2258 !SSL_use_PrivateKey(s,pkey))
2264 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2267 if (x509 != NULL) X509_free(x509);
2268 if (pkey != NULL) EVP_PKEY_free(pkey);
2271 if (s->version == SSL3_VERSION)
2273 s->s3->tmp.cert_req=0;
2274 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2279 s->s3->tmp.cert_req=2;
2283 /* Ok, we have a cert */
2284 s->state=SSL3_ST_CW_CERT_C;
2287 if (s->state == SSL3_ST_CW_CERT_C)
2289 s->state=SSL3_ST_CW_CERT_D;
2290 l=ssl3_output_cert_chain(s,
2291 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2295 /* SSL3_ST_CW_CERT_D */
2296 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2299 #define has_bits(i,m) (((i)&(m)) == (m))
2301 int ssl3_check_cert_and_algorithm(SSL *s)
2305 EVP_PKEY *pkey=NULL;
2307 #ifndef OPENSSL_NO_RSA
2310 #ifndef OPENSSL_NO_DH
2314 sc=s->session->sess_cert;
2318 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2322 algs=s->s3->tmp.new_cipher->algorithms;
2324 /* we don't have a certificate */
2325 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2328 #ifndef OPENSSL_NO_RSA
2329 rsa=s->session->sess_cert->peer_rsa_tmp;
2331 #ifndef OPENSSL_NO_DH
2332 dh=s->session->sess_cert->peer_dh_tmp;
2335 /* This is the passed certificate */
2337 idx=sc->peer_cert_type;
2338 #ifndef OPENSSL_NO_ECDH
2339 if (idx == SSL_PKEY_ECC)
2341 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2342 s->s3->tmp.new_cipher) == 0)
2343 { /* check failed */
2344 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2353 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2354 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2355 EVP_PKEY_free(pkey);
2358 /* Check that we have a certificate if we require one */
2359 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2361 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2364 #ifndef OPENSSL_NO_DSA
2365 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2367 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2371 #ifndef OPENSSL_NO_RSA
2372 if ((algs & SSL_kRSA) &&
2373 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2375 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2379 #ifndef OPENSSL_NO_DH
2380 if ((algs & SSL_kEDH) &&
2381 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2383 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2386 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2388 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2391 #ifndef OPENSSL_NO_DSA
2392 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2394 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2400 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2402 #ifndef OPENSSL_NO_RSA
2403 if (algs & SSL_kRSA)
2406 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2408 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2414 #ifndef OPENSSL_NO_DH
2415 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2418 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2420 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2427 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2433 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2439 #ifndef OPENSSL_NO_ECDH
2440 /* This is the complement of nid2curve_id in s3_srvr.c. */
2441 static int curve_id2nid(int curve_id)
2443 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2444 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2445 static int nid_list[26] =
2448 NID_sect163k1, /* sect163k1 (1) */
2449 NID_sect163r1, /* sect163r1 (2) */
2450 NID_sect163r2, /* sect163r2 (3) */
2451 NID_sect193r1, /* sect193r1 (4) */
2452 NID_sect193r2, /* sect193r2 (5) */
2453 NID_sect233k1, /* sect233k1 (6) */
2454 NID_sect233r1, /* sect233r1 (7) */
2455 NID_sect239k1, /* sect239k1 (8) */
2456 NID_sect283k1, /* sect283k1 (9) */
2457 NID_sect283r1, /* sect283r1 (10) */
2458 NID_sect409k1, /* sect409k1 (11) */
2459 NID_sect409r1, /* sect409r1 (12) */
2460 NID_sect571k1, /* sect571k1 (13) */
2461 NID_sect571r1, /* sect571r1 (14) */
2462 NID_secp160k1, /* secp160k1 (15) */
2463 NID_secp160r1, /* secp160r1 (16) */
2464 NID_secp160r2, /* secp160r2 (17) */
2465 NID_secp192k1, /* secp192k1 (18) */
2466 NID_X9_62_prime192v1, /* secp192r1 (19) */
2467 NID_secp224k1, /* secp224k1 (20) */
2468 NID_secp224r1, /* secp224r1 (21) */
2469 NID_secp256k1, /* secp256k1 (22) */
2470 NID_X9_62_prime256v1, /* secp256r1 (23) */
2471 NID_secp384r1, /* secp384r1 (24) */
2472 NID_secp521r1 /* secp521r1 (25) */
2475 if ((curve_id < 1) || (curve_id > 25)) return 0;
2477 return nid_list[curve_id];