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 const 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 const 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=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=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
592 if ((s->options & SSL_OP_NO_COMPRESSION)
593 || !s->ctx->comp_methods)
596 j=sk_SSL_COMP_num(s->ctx->comp_methods);
600 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
604 *(p++)=0; /* Add the NULL method */
608 *(d++)=SSL3_MT_CLIENT_HELLO;
611 s->state=SSL3_ST_CW_CLNT_HELLO_B;
612 /* number of bytes to write */
617 /* SSL3_ST_CW_CLNT_HELLO_B */
618 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
623 int ssl3_get_server_hello(SSL *s)
625 STACK_OF(SSL_CIPHER) *sk;
631 #ifndef OPENSSL_NO_COMP
635 n=s->method->ssl_get_message(s,
636 SSL3_ST_CR_SRVR_HELLO_A,
637 SSL3_ST_CR_SRVR_HELLO_B,
642 if (!ok) return((int)n);
644 if ( SSL_version(s) == DTLS1_VERSION)
646 if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST)
648 if ( s->d1->send_cookie == 0)
650 s->s3->tmp.reuse_message = 1;
653 else /* already sent a cookie */
655 al=SSL_AD_UNEXPECTED_MESSAGE;
656 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
662 if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO)
664 al=SSL_AD_UNEXPECTED_MESSAGE;
665 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE);
669 d=p=(unsigned char *)s->init_msg;
671 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
673 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
674 s->version=(s->version&0xff00)|p[1];
675 al=SSL_AD_PROTOCOL_VERSION;
680 /* load the server hello data */
681 /* load the server random */
682 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
685 /* get the session-id */
688 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
690 al=SSL_AD_ILLEGAL_PARAMETER;
691 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
695 if (j != 0 && j == s->session->session_id_length
696 && memcmp(p,s->session->session_id,j) == 0)
698 if(s->sid_ctx_length != s->session->sid_ctx_length
699 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
701 /* actually a client application bug */
702 al=SSL_AD_ILLEGAL_PARAMETER;
703 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
708 else /* a miss or crap from the other end */
710 /* If we were trying for session-id reuse, make a new
711 * SSL_SESSION so we don't stuff up other people */
713 if (s->session->session_id_length > 0)
715 if (!ssl_get_new_session(s,0))
717 al=SSL_AD_INTERNAL_ERROR;
721 s->session->session_id_length=j;
722 memcpy(s->session->session_id,p,j); /* j could be 0 */
725 c=ssl_get_cipher_by_char(s,p);
729 al=SSL_AD_ILLEGAL_PARAMETER;
730 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
733 p+=ssl_put_cipher_by_char(s,NULL,NULL);
735 sk=ssl_get_ciphers_by_id(s);
736 i=sk_SSL_CIPHER_find(sk,c);
739 /* we did not say we would use this cipher */
740 al=SSL_AD_ILLEGAL_PARAMETER;
741 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
745 /* Depending on the session caching (internal/external), the cipher
746 and/or cipher_id values may not be set. Make sure that
747 cipher_id is set and use it for comparison. */
748 if (s->session->cipher)
749 s->session->cipher_id = s->session->cipher->id;
750 if (s->hit && (s->session->cipher_id != c->id))
753 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
755 al=SSL_AD_ILLEGAL_PARAMETER;
756 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
760 s->s3->tmp.new_cipher=c;
762 /* lets get the compression algorithm */
764 #ifdef OPENSSL_NO_COMP
767 al=SSL_AD_ILLEGAL_PARAMETER;
768 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
773 if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION))
776 comp=ssl3_comp_find(s->ctx->comp_methods,j);
778 if ((j != 0) && (comp == NULL))
780 al=SSL_AD_ILLEGAL_PARAMETER;
781 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
786 s->s3->tmp.new_compression=comp;
792 /* wrong packet length */
793 al=SSL_AD_DECODE_ERROR;
794 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
800 ssl3_send_alert(s,SSL3_AL_FATAL,al);
805 int ssl3_get_server_certificate(SSL *s)
808 unsigned long n,nc,llen,l;
810 const unsigned char *q,*p;
812 STACK_OF(X509) *sk=NULL;
815 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
817 n=s->method->ssl_get_message(s,
824 if (!ok) return((int)n);
826 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
828 s->s3->tmp.reuse_message=1;
832 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
834 al=SSL_AD_UNEXPECTED_MESSAGE;
835 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
838 p=d=(unsigned char *)s->init_msg;
840 if ((sk=sk_X509_new_null()) == NULL)
842 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
849 al=SSL_AD_DECODE_ERROR;
850 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
853 for (nc=0; nc<llen; )
858 al=SSL_AD_DECODE_ERROR;
859 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
864 x=d2i_X509(NULL,&q,l);
867 al=SSL_AD_BAD_CERTIFICATE;
868 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
873 al=SSL_AD_DECODE_ERROR;
874 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
877 if (!sk_X509_push(sk,x))
879 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
887 i=ssl_verify_cert_chain(s,sk);
888 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
889 #ifndef OPENSSL_NO_KRB5
890 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
891 != (SSL_aKRB5|SSL_kKRB5)
892 #endif /* OPENSSL_NO_KRB5 */
895 al=ssl_verify_alarm_type(s->verify_result);
896 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
899 ERR_clear_error(); /* but we keep s->verify_result */
901 sc=ssl_sess_cert_new();
902 if (sc == NULL) goto err;
904 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
905 s->session->sess_cert=sc;
908 /* Inconsistency alert: cert_chain does include the peer's
909 * certificate, which we don't include in s3_srvr.c */
910 x=sk_X509_value(sk,0);
912 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
914 pkey=X509_get_pubkey(x);
916 /* VRS: allow null cert if auth == KRB5 */
917 need_cert = ((s->s3->tmp.new_cipher->algorithms
918 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
919 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
922 printf("pkey,x = %p, %p\n", pkey,x);
923 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
924 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
925 s->s3->tmp.new_cipher->algorithms, need_cert);
926 #endif /* KSSL_DEBUG */
928 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
932 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
933 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
937 i=ssl_cert_type(x,pkey);
938 if (need_cert && i < 0)
942 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
943 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
949 sc->peer_cert_type=i;
950 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
951 /* Why would the following ever happen?
952 * We just created sc a couple of lines ago. */
953 if (sc->peer_pkeys[i].x509 != NULL)
954 X509_free(sc->peer_pkeys[i].x509);
955 sc->peer_pkeys[i].x509=x;
956 sc->peer_key= &(sc->peer_pkeys[i]);
958 if (s->session->peer != NULL)
959 X509_free(s->session->peer);
960 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
965 sc->peer_cert_type=i;
968 if (s->session->peer != NULL)
969 X509_free(s->session->peer);
970 s->session->peer=NULL;
972 s->session->verify_result = s->verify_result;
980 ssl3_send_alert(s,SSL3_AL_FATAL,al);
985 sk_X509_pop_free(sk,X509_free);
989 int ssl3_get_key_exchange(SSL *s)
991 #ifndef OPENSSL_NO_RSA
992 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
995 unsigned char *param,*p;
996 int al,i,j,param_len,ok;
999 #ifndef OPENSSL_NO_RSA
1002 #ifndef OPENSSL_NO_DH
1005 #ifndef OPENSSL_NO_ECDH
1006 EC_KEY *ecdh = NULL;
1007 BN_CTX *bn_ctx = NULL;
1008 EC_POINT *srvr_ecpoint = NULL;
1010 int encoded_pt_len = 0;
1013 /* use same message size as in ssl3_get_certificate_request()
1014 * as ServerKeyExchange message may be skipped */
1015 n=s->method->ssl_get_message(s,
1016 SSL3_ST_CR_KEY_EXCH_A,
1017 SSL3_ST_CR_KEY_EXCH_B,
1022 if (!ok) return((int)n);
1024 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
1026 s->s3->tmp.reuse_message=1;
1030 param=p=(unsigned char *)s->init_msg;
1032 if (s->session->sess_cert != NULL)
1034 #ifndef OPENSSL_NO_RSA
1035 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1037 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1038 s->session->sess_cert->peer_rsa_tmp=NULL;
1041 #ifndef OPENSSL_NO_DH
1042 if (s->session->sess_cert->peer_dh_tmp)
1044 DH_free(s->session->sess_cert->peer_dh_tmp);
1045 s->session->sess_cert->peer_dh_tmp=NULL;
1048 #ifndef OPENSSL_NO_ECDH
1049 if (s->session->sess_cert->peer_ecdh_tmp)
1051 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1052 s->session->sess_cert->peer_ecdh_tmp=NULL;
1058 s->session->sess_cert=ssl_sess_cert_new();
1062 alg=s->s3->tmp.new_cipher->algorithms;
1063 EVP_MD_CTX_init(&md_ctx);
1065 #ifndef OPENSSL_NO_RSA
1068 if ((rsa=RSA_new()) == NULL)
1070 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1077 al=SSL_AD_DECODE_ERROR;
1078 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1081 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1083 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1092 al=SSL_AD_DECODE_ERROR;
1093 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1096 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1098 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1104 /* this should be because we are using an export cipher */
1106 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1109 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1112 s->session->sess_cert->peer_rsa_tmp=rsa;
1115 #else /* OPENSSL_NO_RSA */
1119 #ifndef OPENSSL_NO_DH
1120 else if (alg & SSL_kEDH)
1122 if ((dh=DH_new()) == NULL)
1124 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1131 al=SSL_AD_DECODE_ERROR;
1132 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1135 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1137 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1146 al=SSL_AD_DECODE_ERROR;
1147 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1150 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1152 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1161 al=SSL_AD_DECODE_ERROR;
1162 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1165 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1167 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1173 #ifndef OPENSSL_NO_RSA
1175 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1180 #ifndef OPENSSL_NO_DSA
1181 else if (alg & SSL_aDSS)
1182 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1184 /* else anonymous DH, so no certificate or pkey. */
1186 s->session->sess_cert->peer_dh_tmp=dh;
1189 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1191 al=SSL_AD_ILLEGAL_PARAMETER;
1192 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1195 #endif /* !OPENSSL_NO_DH */
1197 #ifndef OPENSSL_NO_ECDH
1198 else if (alg & SSL_kECDHE)
1201 const EC_GROUP *group;
1203 if ((ecdh=EC_KEY_new()) == NULL)
1205 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1209 /* Extract elliptic curve parameters and the
1210 * server's ephemeral ECDH public key.
1211 * Keep accumulating lengths of various components in
1212 * param_len and make sure it never exceeds n.
1215 /* XXX: For now we only support named (not generic) curves
1216 * and the ECParameters in this case is just two bytes.
1219 if ((param_len > n) ||
1220 (*p != NAMED_CURVE_TYPE) ||
1221 ((curve_nid = curve_id2nid(*(p + 1))) == 0))
1223 al=SSL_AD_INTERNAL_ERROR;
1224 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1228 ngroup = EC_GROUP_new_by_curve_name(curve_nid);
1231 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1234 if (EC_KEY_set_group(ecdh, ngroup) == 0)
1236 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1239 EC_GROUP_free(ngroup);
1241 group = EC_KEY_get0_group(ecdh);
1243 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1244 (EC_GROUP_get_degree(group) > 163))
1246 al=SSL_AD_EXPORT_RESTRICTION;
1247 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1253 /* Next, get the encoded ECPoint */
1254 if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) ||
1255 ((bn_ctx = BN_CTX_new()) == NULL))
1257 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1261 encoded_pt_len = *p; /* length of encoded point */
1263 param_len += (1 + encoded_pt_len);
1264 if ((param_len > n) ||
1265 (EC_POINT_oct2point(group, srvr_ecpoint,
1266 p, encoded_pt_len, bn_ctx) == 0))
1268 al=SSL_AD_DECODE_ERROR;
1269 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1276 /* The ECC/TLS specification does not mention
1277 * the use of DSA to sign ECParameters in the server
1278 * key exchange message. We do support RSA and ECDSA.
1281 #ifndef OPENSSL_NO_RSA
1282 else if (alg & SSL_aRSA)
1283 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1285 #ifndef OPENSSL_NO_ECDSA
1286 else if (alg & SSL_aECDSA)
1287 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1289 /* else anonymous ECDH, so no certificate or pkey. */
1290 EC_KEY_set_public_key(ecdh, srvr_ecpoint);
1291 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1293 BN_CTX_free(bn_ctx);
1294 EC_POINT_free(srvr_ecpoint);
1295 srvr_ecpoint = NULL;
1297 else if (alg & SSL_kECDH)
1299 al=SSL_AD_UNEXPECTED_MESSAGE;
1300 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1303 #endif /* !OPENSSL_NO_ECDH */
1306 al=SSL_AD_HANDSHAKE_FAILURE;
1307 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1312 /* p points to the next byte, there are 'n' bytes left */
1314 /* if it was signed, check the signature */
1319 j=EVP_PKEY_size(pkey);
1321 if ((i != n) || (n > j) || (n <= 0))
1323 /* wrong packet length */
1324 al=SSL_AD_DECODE_ERROR;
1325 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1329 #ifndef OPENSSL_NO_RSA
1330 if (pkey->type == EVP_PKEY_RSA)
1336 for (num=2; num > 0; num--)
1338 EVP_DigestInit_ex(&md_ctx,(num == 2)
1339 ?s->ctx->md5:s->ctx->sha1, NULL);
1340 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1341 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1342 EVP_DigestUpdate(&md_ctx,param,param_len);
1343 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1347 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1351 al=SSL_AD_DECRYPT_ERROR;
1352 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1358 al=SSL_AD_DECRYPT_ERROR;
1359 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1365 #ifndef OPENSSL_NO_DSA
1366 if (pkey->type == EVP_PKEY_DSA)
1369 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1370 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1371 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1372 EVP_VerifyUpdate(&md_ctx,param,param_len);
1373 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1376 al=SSL_AD_DECRYPT_ERROR;
1377 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1383 #ifndef OPENSSL_NO_ECDSA
1384 if (pkey->type == EVP_PKEY_EC)
1386 /* let's do ECDSA */
1387 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1388 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1389 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1390 EVP_VerifyUpdate(&md_ctx,param,param_len);
1391 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1394 al=SSL_AD_DECRYPT_ERROR;
1395 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1402 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1408 /* still data left over */
1409 if (!(alg & SSL_aNULL))
1411 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1416 al=SSL_AD_DECODE_ERROR;
1417 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1421 EVP_PKEY_free(pkey);
1422 EVP_MD_CTX_cleanup(&md_ctx);
1425 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1427 EVP_PKEY_free(pkey);
1428 #ifndef OPENSSL_NO_RSA
1432 #ifndef OPENSSL_NO_DH
1436 #ifndef OPENSSL_NO_ECDH
1437 BN_CTX_free(bn_ctx);
1438 EC_POINT_free(srvr_ecpoint);
1442 EVP_MD_CTX_cleanup(&md_ctx);
1446 int ssl3_get_certificate_request(SSL *s)
1449 unsigned long n,nc,l;
1450 unsigned int llen,ctype_num,i;
1452 const unsigned char *p,*q;
1454 STACK_OF(X509_NAME) *ca_sk=NULL;
1456 n=s->method->ssl_get_message(s,
1457 SSL3_ST_CR_CERT_REQ_A,
1458 SSL3_ST_CR_CERT_REQ_B,
1463 if (!ok) return((int)n);
1465 s->s3->tmp.cert_req=0;
1467 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1469 s->s3->tmp.reuse_message=1;
1473 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1475 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1476 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1480 /* TLS does not like anon-DH with client cert */
1481 if (s->version > SSL3_VERSION)
1483 l=s->s3->tmp.new_cipher->algorithms;
1486 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1487 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1492 p=d=(unsigned char *)s->init_msg;
1494 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1496 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1500 /* get the certificate types */
1502 if (ctype_num > SSL3_CT_NUMBER)
1503 ctype_num=SSL3_CT_NUMBER;
1504 for (i=0; i<ctype_num; i++)
1505 s->s3->tmp.ctype[i]= p[i];
1508 /* get the CA RDNs */
1513 out=fopen("/tmp/vsign.der","w");
1514 fwrite(p,1,llen,out);
1519 if ((llen+ctype_num+2+1) != n)
1521 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1522 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1526 for (nc=0; nc<llen; )
1529 if ((l+nc+2) > llen)
1531 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1532 goto cont; /* netscape bugs */
1533 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1534 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1540 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1542 /* If netscape tolerance is on, ignore errors */
1543 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1547 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1548 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1555 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1556 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1559 if (!sk_X509_NAME_push(ca_sk,xn))
1561 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1575 /* we should setup a certificate to return.... */
1576 s->s3->tmp.cert_req=1;
1577 s->s3->tmp.ctype_num=ctype_num;
1578 if (s->s3->tmp.ca_names != NULL)
1579 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1580 s->s3->tmp.ca_names=ca_sk;
1585 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1589 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1591 return(X509_NAME_cmp(*a,*b));
1594 int ssl3_get_server_done(SSL *s)
1599 n=s->method->ssl_get_message(s,
1600 SSL3_ST_CR_SRVR_DONE_A,
1601 SSL3_ST_CR_SRVR_DONE_B,
1602 SSL3_MT_SERVER_DONE,
1603 30, /* should be very small, like 0 :-) */
1606 if (!ok) return((int)n);
1609 /* should contain no data */
1610 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1611 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1619 #ifndef OPENSSL_NO_ECDH
1620 static const int KDF1_SHA1_len = 20;
1621 static void *KDF1_SHA1(const void *in, size_t inlen, void *out, size_t *outlen)
1623 #ifndef OPENSSL_NO_SHA
1624 if (*outlen < SHA_DIGEST_LENGTH)
1627 *outlen = SHA_DIGEST_LENGTH;
1628 return SHA1(in, inlen, out);
1631 #endif /* OPENSSL_NO_SHA */
1633 #endif /* OPENSSL_NO_ECDH */
1635 int ssl3_send_client_key_exchange(SSL *s)
1637 unsigned char *p,*d;
1640 #ifndef OPENSSL_NO_RSA
1642 EVP_PKEY *pkey=NULL;
1644 #ifndef OPENSSL_NO_KRB5
1646 #endif /* OPENSSL_NO_KRB5 */
1647 #ifndef OPENSSL_NO_ECDH
1648 EC_KEY *clnt_ecdh = NULL;
1649 const EC_POINT *srvr_ecpoint = NULL;
1650 EVP_PKEY *srvr_pub_pkey = NULL;
1651 unsigned char *encodedPoint = NULL;
1652 int encoded_pt_len = 0;
1653 BN_CTX * bn_ctx = NULL;
1656 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1658 d=(unsigned char *)s->init_buf->data;
1661 l=s->s3->tmp.new_cipher->algorithms;
1663 /* Fool emacs indentation */
1665 #ifndef OPENSSL_NO_RSA
1666 else if (l & SSL_kRSA)
1669 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1671 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1672 rsa=s->session->sess_cert->peer_rsa_tmp;
1675 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1676 if ((pkey == NULL) ||
1677 (pkey->type != EVP_PKEY_RSA) ||
1678 (pkey->pkey.rsa == NULL))
1680 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1684 EVP_PKEY_free(pkey);
1687 tmp_buf[0]=s->client_version>>8;
1688 tmp_buf[1]=s->client_version&0xff;
1689 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1692 s->session->master_key_length=sizeof tmp_buf;
1695 /* Fix buf for TLS and beyond */
1696 if (s->version > SSL3_VERSION)
1698 n=RSA_public_encrypt(sizeof tmp_buf,
1699 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1701 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1702 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1706 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1710 /* Fix buf for TLS and beyond */
1711 if (s->version > SSL3_VERSION)
1717 s->session->master_key_length=
1718 s->method->ssl3_enc->generate_master_secret(s,
1719 s->session->master_key,
1720 tmp_buf,sizeof tmp_buf);
1721 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1724 #ifndef OPENSSL_NO_KRB5
1725 else if (l & SSL_kKRB5)
1727 krb5_error_code krb5rc;
1728 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1729 /* krb5_data krb5_ap_req; */
1730 krb5_data *enc_ticket;
1731 krb5_data authenticator, *authp = NULL;
1732 EVP_CIPHER_CTX ciph_ctx;
1733 EVP_CIPHER *enc = NULL;
1734 unsigned char iv[EVP_MAX_IV_LENGTH];
1735 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1736 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1737 + EVP_MAX_IV_LENGTH];
1738 int padl, outl = sizeof(epms);
1740 EVP_CIPHER_CTX_init(&ciph_ctx);
1743 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1745 #endif /* KSSL_DEBUG */
1749 if (KRB5SENDAUTH) authp = &authenticator;
1750 #endif /* KRB5SENDAUTH */
1752 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1754 enc = kssl_map_enc(kssl_ctx->enctype);
1759 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1760 if (krb5rc && kssl_err.text)
1761 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1763 #endif /* KSSL_DEBUG */
1767 ssl3_send_alert(s,SSL3_AL_FATAL,
1768 SSL_AD_HANDSHAKE_FAILURE);
1769 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1774 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1775 ** in place of RFC 2712 KerberosWrapper, as in:
1777 ** Send ticket (copy to *p, set n = length)
1778 ** n = krb5_ap_req.length;
1779 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1780 ** if (krb5_ap_req.data)
1781 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1783 ** Now using real RFC 2712 KerberosWrapper
1784 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1785 ** Note: 2712 "opaque" types are here replaced
1786 ** with a 2-byte length followed by the value.
1788 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1789 ** Where "xx xx" = length bytes. Shown here with
1790 ** optional authenticator omitted.
1793 /* KerberosWrapper.Ticket */
1794 s2n(enc_ticket->length,p);
1795 memcpy(p, enc_ticket->data, enc_ticket->length);
1796 p+= enc_ticket->length;
1797 n = enc_ticket->length + 2;
1799 /* KerberosWrapper.Authenticator */
1800 if (authp && authp->length)
1802 s2n(authp->length,p);
1803 memcpy(p, authp->data, authp->length);
1805 n+= authp->length + 2;
1813 s2n(0,p);/* null authenticator length */
1817 if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
1820 /* 20010420 VRS. Tried it this way; failed.
1821 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1822 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1823 ** kssl_ctx->length);
1824 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1827 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1828 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1830 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1832 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1834 if (outl > sizeof epms)
1836 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1839 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1841 /* KerberosWrapper.EncryptedPreMasterSecret */
1843 memcpy(p, epms, outl);
1847 s->session->master_key_length=
1848 s->method->ssl3_enc->generate_master_secret(s,
1849 s->session->master_key,
1850 tmp_buf, sizeof tmp_buf);
1852 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
1853 OPENSSL_cleanse(epms, outl);
1856 #ifndef OPENSSL_NO_DH
1857 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1859 DH *dh_srvr,*dh_clnt;
1861 if (s->session->sess_cert->peer_dh_tmp != NULL)
1862 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1865 /* we get them from the cert */
1866 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1867 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1871 /* generate a new random key */
1872 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1874 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1877 if (!DH_generate_key(dh_clnt))
1879 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1883 /* use the 'p' output buffer for the DH key, but
1884 * make sure to clear it out afterwards */
1886 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1890 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1894 /* generate master key from the result */
1895 s->session->master_key_length=
1896 s->method->ssl3_enc->generate_master_secret(s,
1897 s->session->master_key,p,n);
1901 /* send off the data */
1902 n=BN_num_bytes(dh_clnt->pub_key);
1904 BN_bn2bin(dh_clnt->pub_key,p);
1909 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1913 #ifndef OPENSSL_NO_ECDH
1914 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
1916 const EC_GROUP *srvr_group = NULL;
1918 int ecdh_clnt_cert = 0;
1921 /* Did we send out the client's
1922 * ECDH share for use in premaster
1923 * computation as part of client certificate?
1924 * If so, set ecdh_clnt_cert to 1.
1926 if ((l & SSL_kECDH) && (s->cert != NULL))
1928 /* XXX: For now, we do not support client
1929 * authentication using ECDH certificates.
1930 * To add such support, one needs to add
1931 * code that checks for appropriate
1932 * conditions and sets ecdh_clnt_cert to 1.
1933 * For example, the cert have an ECC
1934 * key on the same curve as the server's
1935 * and the key should be authorized for
1938 * One also needs to add code in ssl3_connect
1939 * to skip sending the certificate verify
1942 * if ((s->cert->key->privatekey != NULL) &&
1943 * (s->cert->key->privatekey->type ==
1944 * EVP_PKEY_EC) && ...)
1945 * ecdh_clnt_cert = 1;
1949 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
1951 tkey = s->session->sess_cert->peer_ecdh_tmp;
1955 /* Get the Server Public Key from Cert */
1956 srvr_pub_pkey = X509_get_pubkey(s->session-> \
1957 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1958 if ((srvr_pub_pkey == NULL) ||
1959 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
1960 (srvr_pub_pkey->pkey.ec == NULL))
1962 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1963 ERR_R_INTERNAL_ERROR);
1967 tkey = srvr_pub_pkey->pkey.ec;
1970 srvr_group = EC_KEY_get0_group(tkey);
1971 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
1973 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
1975 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1976 ERR_R_INTERNAL_ERROR);
1980 if ((clnt_ecdh=EC_KEY_new()) == NULL)
1982 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1986 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
1988 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
1993 /* Reuse key info from our certificate
1994 * We only need our private key to perform
1995 * the ECDH computation.
1997 const BIGNUM *priv_key;
1998 tkey = s->cert->key->privatekey->pkey.ec;
1999 priv_key = EC_KEY_get0_private_key(tkey);
2000 if (priv_key == NULL)
2002 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2005 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
2007 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
2013 /* Generate a new ECDH key pair */
2014 if (!(EC_KEY_generate_key(clnt_ecdh)))
2016 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
2021 /* use the 'p' output buffer for the ECDH key, but
2022 * make sure to clear it out afterwards
2025 field_size = EC_GROUP_get_degree(srvr_group);
2026 if (field_size <= 0)
2028 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2032 /* If field size is not more than 24 octets, then use SHA-1 hash of result;
2033 * otherwise, use result (see section 4.8 of draft-ietf-tls-ecc-03.txt;
2034 * this is new with this version of the Internet Draft).
2036 if (field_size <= 24 * 8)
2037 n=ECDH_compute_key(p, KDF1_SHA1_len, srvr_ecpoint, clnt_ecdh, KDF1_SHA1);
2039 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
2042 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2047 /* generate master key from the result */
2048 s->session->master_key_length = s->method->ssl3_enc \
2049 -> generate_master_secret(s,
2050 s->session->master_key,
2053 memset(p, 0, n); /* clean up */
2057 /* Send empty client key exch message */
2062 /* First check the size of encoding and
2063 * allocate memory accordingly.
2066 EC_POINT_point2oct(srvr_group,
2067 EC_KEY_get0_public_key(clnt_ecdh),
2068 POINT_CONVERSION_UNCOMPRESSED,
2071 encodedPoint = (unsigned char *)
2072 OPENSSL_malloc(encoded_pt_len *
2073 sizeof(unsigned char));
2074 bn_ctx = BN_CTX_new();
2075 if ((encodedPoint == NULL) ||
2078 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
2082 /* Encode the public key */
2083 n = EC_POINT_point2oct(srvr_group,
2084 EC_KEY_get0_public_key(clnt_ecdh),
2085 POINT_CONVERSION_UNCOMPRESSED,
2086 encodedPoint, encoded_pt_len, bn_ctx);
2088 *p = n; /* length of encoded point */
2089 /* Encoded point will be copied here */
2091 /* copy the point */
2092 memcpy((unsigned char *)p, encodedPoint, n);
2093 /* increment n to account for length field */
2097 /* Free allocated memory */
2098 BN_CTX_free(bn_ctx);
2099 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2100 if (clnt_ecdh != NULL)
2101 EC_KEY_free(clnt_ecdh);
2102 EVP_PKEY_free(srvr_pub_pkey);
2104 #endif /* !OPENSSL_NO_ECDH */
2107 ssl3_send_alert(s, SSL3_AL_FATAL,
2108 SSL_AD_HANDSHAKE_FAILURE);
2109 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2110 ERR_R_INTERNAL_ERROR);
2114 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2117 s->state=SSL3_ST_CW_KEY_EXCH_B;
2118 /* number of bytes to write */
2123 /* SSL3_ST_CW_KEY_EXCH_B */
2124 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2126 #ifndef OPENSSL_NO_ECDH
2127 BN_CTX_free(bn_ctx);
2128 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2129 if (clnt_ecdh != NULL)
2130 EC_KEY_free(clnt_ecdh);
2131 EVP_PKEY_free(srvr_pub_pkey);
2136 int ssl3_send_client_verify(SSL *s)
2138 unsigned char *p,*d;
2139 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2141 #ifndef OPENSSL_NO_RSA
2145 #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
2149 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2151 d=(unsigned char *)s->init_buf->data;
2153 pkey=s->cert->key->privatekey;
2155 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2156 &(data[MD5_DIGEST_LENGTH]));
2158 #ifndef OPENSSL_NO_RSA
2159 if (pkey->type == EVP_PKEY_RSA)
2161 s->method->ssl3_enc->cert_verify_mac(s,
2162 &(s->s3->finish_dgst1),&(data[0]));
2163 if (RSA_sign(NID_md5_sha1, data,
2164 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2165 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2167 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2175 #ifndef OPENSSL_NO_DSA
2176 if (pkey->type == EVP_PKEY_DSA)
2178 if (!DSA_sign(pkey->save_type,
2179 &(data[MD5_DIGEST_LENGTH]),
2180 SHA_DIGEST_LENGTH,&(p[2]),
2181 (unsigned int *)&j,pkey->pkey.dsa))
2183 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2191 #ifndef OPENSSL_NO_ECDSA
2192 if (pkey->type == EVP_PKEY_EC)
2194 if (!ECDSA_sign(pkey->save_type,
2195 &(data[MD5_DIGEST_LENGTH]),
2196 SHA_DIGEST_LENGTH,&(p[2]),
2197 (unsigned int *)&j,pkey->pkey.ec))
2199 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2209 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2212 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2215 s->state=SSL3_ST_CW_CERT_VRFY_B;
2216 s->init_num=(int)n+4;
2219 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2224 int ssl3_send_client_certificate(SSL *s)
2227 EVP_PKEY *pkey=NULL;
2231 if (s->state == SSL3_ST_CW_CERT_A)
2233 if ((s->cert == NULL) ||
2234 (s->cert->key->x509 == NULL) ||
2235 (s->cert->key->privatekey == NULL))
2236 s->state=SSL3_ST_CW_CERT_B;
2238 s->state=SSL3_ST_CW_CERT_C;
2241 /* We need to get a client cert */
2242 if (s->state == SSL3_ST_CW_CERT_B)
2244 /* If we get an error, we need to
2245 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2246 * We then get retied later */
2248 if (s->ctx->client_cert_cb != NULL)
2249 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2252 s->rwstate=SSL_X509_LOOKUP;
2255 s->rwstate=SSL_NOTHING;
2256 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2258 s->state=SSL3_ST_CW_CERT_B;
2259 if ( !SSL_use_certificate(s,x509) ||
2260 !SSL_use_PrivateKey(s,pkey))
2266 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2269 if (x509 != NULL) X509_free(x509);
2270 if (pkey != NULL) EVP_PKEY_free(pkey);
2273 if (s->version == SSL3_VERSION)
2275 s->s3->tmp.cert_req=0;
2276 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2281 s->s3->tmp.cert_req=2;
2285 /* Ok, we have a cert */
2286 s->state=SSL3_ST_CW_CERT_C;
2289 if (s->state == SSL3_ST_CW_CERT_C)
2291 s->state=SSL3_ST_CW_CERT_D;
2292 l=ssl3_output_cert_chain(s,
2293 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2297 /* SSL3_ST_CW_CERT_D */
2298 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2301 #define has_bits(i,m) (((i)&(m)) == (m))
2303 int ssl3_check_cert_and_algorithm(SSL *s)
2307 EVP_PKEY *pkey=NULL;
2309 #ifndef OPENSSL_NO_RSA
2312 #ifndef OPENSSL_NO_DH
2316 sc=s->session->sess_cert;
2320 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2324 algs=s->s3->tmp.new_cipher->algorithms;
2326 /* we don't have a certificate */
2327 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2330 #ifndef OPENSSL_NO_RSA
2331 rsa=s->session->sess_cert->peer_rsa_tmp;
2333 #ifndef OPENSSL_NO_DH
2334 dh=s->session->sess_cert->peer_dh_tmp;
2337 /* This is the passed certificate */
2339 idx=sc->peer_cert_type;
2340 #ifndef OPENSSL_NO_ECDH
2341 if (idx == SSL_PKEY_ECC)
2343 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2344 s->s3->tmp.new_cipher) == 0)
2345 { /* check failed */
2346 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2355 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2356 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2357 EVP_PKEY_free(pkey);
2360 /* Check that we have a certificate if we require one */
2361 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2363 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2366 #ifndef OPENSSL_NO_DSA
2367 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2369 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2373 #ifndef OPENSSL_NO_RSA
2374 if ((algs & SSL_kRSA) &&
2375 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2377 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2381 #ifndef OPENSSL_NO_DH
2382 if ((algs & SSL_kEDH) &&
2383 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2385 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2388 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2390 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2393 #ifndef OPENSSL_NO_DSA
2394 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2396 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2402 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2404 #ifndef OPENSSL_NO_RSA
2405 if (algs & SSL_kRSA)
2408 || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2410 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2416 #ifndef OPENSSL_NO_DH
2417 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2420 || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2422 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2429 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2435 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2441 #ifndef OPENSSL_NO_ECDH
2442 /* This is the complement of nid2curve_id in s3_srvr.c. */
2443 static int curve_id2nid(int curve_id)
2445 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2446 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2447 static int nid_list[26] =
2450 NID_sect163k1, /* sect163k1 (1) */
2451 NID_sect163r1, /* sect163r1 (2) */
2452 NID_sect163r2, /* sect163r2 (3) */
2453 NID_sect193r1, /* sect193r1 (4) */
2454 NID_sect193r2, /* sect193r2 (5) */
2455 NID_sect233k1, /* sect233k1 (6) */
2456 NID_sect233r1, /* sect233r1 (7) */
2457 NID_sect239k1, /* sect239k1 (8) */
2458 NID_sect283k1, /* sect283k1 (9) */
2459 NID_sect283r1, /* sect283r1 (10) */
2460 NID_sect409k1, /* sect409k1 (11) */
2461 NID_sect409r1, /* sect409r1 (12) */
2462 NID_sect571k1, /* sect571k1 (13) */
2463 NID_sect571r1, /* sect571r1 (14) */
2464 NID_secp160k1, /* secp160k1 (15) */
2465 NID_secp160r1, /* secp160r1 (16) */
2466 NID_secp160r2, /* secp160r2 (17) */
2467 NID_secp192k1, /* secp192k1 (18) */
2468 NID_X9_62_prime192v1, /* secp192r1 (19) */
2469 NID_secp224k1, /* secp224k1 (20) */
2470 NID_secp224r1, /* secp224r1 (21) */
2471 NID_secp256k1, /* secp256k1 (22) */
2472 NID_X9_62_prime256v1, /* secp256r1 (23) */
2473 NID_secp384r1, /* secp384r1 (24) */
2474 NID_secp521r1 /* secp521r1 (25) */
2477 if ((curve_id < 1) || (curve_id > 25)) return 0;
2479 return nid_list[curve_id];