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) 1998-2002 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 #include "cryptlib.h"
135 static SSL_METHOD *ssl3_get_client_method(int ver);
136 static int ssl3_client_hello(SSL *s);
137 static int ssl3_get_server_hello(SSL *s);
138 static int ssl3_get_certificate_request(SSL *s);
139 static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b);
140 static int ssl3_get_server_done(SSL *s);
141 static int ssl3_send_client_verify(SSL *s);
142 static int ssl3_send_client_certificate(SSL *s);
143 static int ssl3_send_client_key_exchange(SSL *s);
144 static int ssl3_get_key_exchange(SSL *s);
145 static int ssl3_get_server_certificate(SSL *s);
146 static int ssl3_check_cert_and_algorithm(SSL *s);
148 #ifndef OPENSSL_NO_ECDH
149 static int curve_id2nid(int curve_id);
150 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
153 static SSL_METHOD *ssl3_get_client_method(int ver)
155 if (ver == SSL3_VERSION)
156 return(SSLv3_client_method());
161 SSL_METHOD *SSLv3_client_method(void)
164 static SSL_METHOD SSLv3_client_data;
168 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
172 memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
174 SSLv3_client_data.ssl_connect=ssl3_connect;
175 SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
179 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
181 return(&SSLv3_client_data);
184 int ssl3_connect(SSL *s)
187 unsigned long Time=time(NULL),l;
189 void (*cb)(const SSL *ssl,int type,int val)=NULL;
191 int new_state,state,skip=0;;
193 RAND_add(&Time,sizeof(Time),0);
197 if (s->info_callback != NULL)
199 else if (s->ctx->info_callback != NULL)
200 cb=s->ctx->info_callback;
203 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
211 case SSL_ST_RENEGOTIATE:
213 s->state=SSL_ST_CONNECT;
214 s->ctx->stats.sess_connect_renegotiate++;
218 case SSL_ST_BEFORE|SSL_ST_CONNECT:
219 case SSL_ST_OK|SSL_ST_CONNECT:
222 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
224 if ((s->version & 0xff00 ) != 0x0300)
226 SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR);
231 /* s->version=SSL3_VERSION; */
232 s->type=SSL_ST_CONNECT;
234 if (s->init_buf == NULL)
236 if ((buf=BUF_MEM_new()) == NULL)
241 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
249 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
251 /* setup buffing BIO */
252 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
254 /* don't push the buffering BIO quite yet */
256 ssl3_init_finished_mac(s);
258 s->state=SSL3_ST_CW_CLNT_HELLO_A;
259 s->ctx->stats.sess_connect++;
263 case SSL3_ST_CW_CLNT_HELLO_A:
264 case SSL3_ST_CW_CLNT_HELLO_B:
267 ret=ssl3_client_hello(s);
268 if (ret <= 0) goto end;
269 s->state=SSL3_ST_CR_SRVR_HELLO_A;
272 /* turn on buffering for the next lot of output */
273 if (s->bbio != s->wbio)
274 s->wbio=BIO_push(s->bbio,s->wbio);
278 case SSL3_ST_CR_SRVR_HELLO_A:
279 case SSL3_ST_CR_SRVR_HELLO_B:
280 ret=ssl3_get_server_hello(s);
281 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CR_FINISHED_A;
285 s->state=SSL3_ST_CR_CERT_A;
289 case SSL3_ST_CR_CERT_A:
290 case SSL3_ST_CR_CERT_B:
291 /* Check if it is anon DH/ECDH */
292 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
294 ret=ssl3_get_server_certificate(s);
295 if (ret <= 0) goto end;
299 s->state=SSL3_ST_CR_KEY_EXCH_A;
303 case SSL3_ST_CR_KEY_EXCH_A:
304 case SSL3_ST_CR_KEY_EXCH_B:
305 ret=ssl3_get_key_exchange(s);
306 if (ret <= 0) goto end;
307 s->state=SSL3_ST_CR_CERT_REQ_A;
310 /* at this point we check that we have the
311 * required stuff from the server */
312 if (!ssl3_check_cert_and_algorithm(s))
319 case SSL3_ST_CR_CERT_REQ_A:
320 case SSL3_ST_CR_CERT_REQ_B:
321 ret=ssl3_get_certificate_request(s);
322 if (ret <= 0) goto end;
323 s->state=SSL3_ST_CR_SRVR_DONE_A;
327 case SSL3_ST_CR_SRVR_DONE_A:
328 case SSL3_ST_CR_SRVR_DONE_B:
329 ret=ssl3_get_server_done(s);
330 if (ret <= 0) goto end;
331 if (s->s3->tmp.cert_req)
332 s->state=SSL3_ST_CW_CERT_A;
334 s->state=SSL3_ST_CW_KEY_EXCH_A;
339 case SSL3_ST_CW_CERT_A:
340 case SSL3_ST_CW_CERT_B:
341 case SSL3_ST_CW_CERT_C:
342 case SSL3_ST_CW_CERT_D:
343 ret=ssl3_send_client_certificate(s);
344 if (ret <= 0) goto end;
345 s->state=SSL3_ST_CW_KEY_EXCH_A;
349 case SSL3_ST_CW_KEY_EXCH_A:
350 case SSL3_ST_CW_KEY_EXCH_B:
351 ret=ssl3_send_client_key_exchange(s);
352 if (ret <= 0) goto end;
353 l=s->s3->tmp.new_cipher->algorithms;
354 /* EAY EAY EAY need to check for DH fix cert
356 /* For TLS, cert_req is set to 2, so a cert chain
357 * of nothing is sent, but no verify packet is sent */
358 /* XXX: For now, we do not support client
359 * authentication in ECDH cipher suites with
360 * ECDH (rather than ECDSA) certificates.
361 * We need to skip the certificate verify
362 * message when client's ECDH public key is sent
363 * inside the client certificate.
365 if (s->s3->tmp.cert_req == 1)
367 s->state=SSL3_ST_CW_CERT_VRFY_A;
371 s->state=SSL3_ST_CW_CHANGE_A;
372 s->s3->change_cipher_spec=0;
378 case SSL3_ST_CW_CERT_VRFY_A:
379 case SSL3_ST_CW_CERT_VRFY_B:
380 ret=ssl3_send_client_verify(s);
381 if (ret <= 0) goto end;
382 s->state=SSL3_ST_CW_CHANGE_A;
384 s->s3->change_cipher_spec=0;
387 case SSL3_ST_CW_CHANGE_A:
388 case SSL3_ST_CW_CHANGE_B:
389 ret=ssl3_send_change_cipher_spec(s,
390 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
391 if (ret <= 0) goto end;
392 s->state=SSL3_ST_CW_FINISHED_A;
395 s->session->cipher=s->s3->tmp.new_cipher;
396 if (s->s3->tmp.new_compression == NULL)
397 s->session->compress_meth=0;
399 s->session->compress_meth=
400 s->s3->tmp.new_compression->id;
401 if (!s->method->ssl3_enc->setup_key_block(s))
407 if (!s->method->ssl3_enc->change_cipher_state(s,
408 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
416 case SSL3_ST_CW_FINISHED_A:
417 case SSL3_ST_CW_FINISHED_B:
418 ret=ssl3_send_finished(s,
419 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
420 s->method->ssl3_enc->client_finished_label,
421 s->method->ssl3_enc->client_finished_label_len);
422 if (ret <= 0) goto end;
423 s->state=SSL3_ST_CW_FLUSH;
426 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
429 s->s3->tmp.next_state=SSL_ST_OK;
430 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
433 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
434 s->s3->delay_buf_pop_ret=0;
439 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
444 case SSL3_ST_CR_FINISHED_A:
445 case SSL3_ST_CR_FINISHED_B:
447 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
448 SSL3_ST_CR_FINISHED_B);
449 if (ret <= 0) goto end;
452 s->state=SSL3_ST_CW_CHANGE_A;
458 case SSL3_ST_CW_FLUSH:
459 /* number of bytes to be flushed */
460 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
463 s->rwstate=SSL_WRITING;
464 num1=BIO_flush(s->wbio);
465 if (num1 <= 0) { ret= -1; goto end; }
466 s->rwstate=SSL_NOTHING;
469 s->state=s->s3->tmp.next_state;
473 /* clean a few things up */
474 ssl3_cleanup_key_block(s);
476 if (s->init_buf != NULL)
478 BUF_MEM_free(s->init_buf);
482 /* If we are not 'joining' the last two packets,
483 * remove the buffering now */
484 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
485 ssl_free_wbio_buffer(s);
486 /* else do it later in ssl3_write */
491 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
492 if (s->hit) s->ctx->stats.sess_hit++;
496 s->handshake_func=ssl3_connect;
497 s->ctx->stats.sess_connect_good++;
499 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
505 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
511 /* did we do anything */
512 if (!s->s3->tmp.reuse_message && !skip)
516 if ((ret=BIO_flush(s->wbio)) <= 0)
520 if ((cb != NULL) && (s->state != state))
524 cb(s,SSL_CB_CONNECT_LOOP,1);
533 cb(s,SSL_CB_CONNECT_EXIT,ret);
538 static int ssl3_client_hello(SSL *s)
543 unsigned long Time,l;
546 buf=(unsigned char *)s->init_buf->data;
547 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
549 if ((s->session == NULL) ||
550 (s->session->ssl_version != s->version) ||
551 (s->session->not_resumable))
553 if (!ssl_get_new_session(s,0))
556 /* else use the pre-loaded session */
558 p=s->s3->client_random;
559 Time=time(NULL); /* Time */
561 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
563 /* Do the message type and length last */
566 *(p++)=s->version>>8;
567 *(p++)=s->version&0xff;
568 s->client_version=s->version;
571 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
578 i=s->session->session_id_length;
582 if (i > sizeof s->session->session_id)
584 SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
587 memcpy(p,s->session->session_id,i);
591 /* Ciphers supported */
592 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
595 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
602 if (s->ctx->comp_methods == NULL)
605 j=sk_SSL_COMP_num(s->ctx->comp_methods);
609 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
612 *(p++)=0; /* Add the NULL method */
616 *(d++)=SSL3_MT_CLIENT_HELLO;
619 s->state=SSL3_ST_CW_CLNT_HELLO_B;
620 /* number of bytes to write */
625 /* SSL3_ST_CW_CLNT_HELLO_B */
626 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
631 static int ssl3_get_server_hello(SSL *s)
633 STACK_OF(SSL_CIPHER) *sk;
641 n=ssl3_get_message(s,
642 SSL3_ST_CR_SRVR_HELLO_A,
643 SSL3_ST_CR_SRVR_HELLO_B,
644 SSL3_MT_SERVER_HELLO,
648 if (!ok) return((int)n);
649 d=p=(unsigned char *)s->init_msg;
651 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
653 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
654 s->version=(s->version&0xff00)|p[1];
655 al=SSL_AD_PROTOCOL_VERSION;
660 /* load the server hello data */
661 /* load the server random */
662 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
665 /* get the session-id */
668 if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE))
670 al=SSL_AD_ILLEGAL_PARAMETER;
671 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG);
675 if (j != 0 && j == s->session->session_id_length
676 && memcmp(p,s->session->session_id,j) == 0)
678 if(s->sid_ctx_length != s->session->sid_ctx_length
679 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
681 /* actually a client application bug */
682 al=SSL_AD_ILLEGAL_PARAMETER;
683 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
688 else /* a miss or crap from the other end */
690 /* If we were trying for session-id reuse, make a new
691 * SSL_SESSION so we don't stuff up other people */
693 if (s->session->session_id_length > 0)
695 if (!ssl_get_new_session(s,0))
697 al=SSL_AD_INTERNAL_ERROR;
701 s->session->session_id_length=j;
702 memcpy(s->session->session_id,p,j); /* j could be 0 */
705 c=ssl_get_cipher_by_char(s,p);
709 al=SSL_AD_ILLEGAL_PARAMETER;
710 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
713 p+=ssl_put_cipher_by_char(s,NULL,NULL);
715 sk=ssl_get_ciphers_by_id(s);
716 i=sk_SSL_CIPHER_find(sk,c);
719 /* we did not say we would use this cipher */
720 al=SSL_AD_ILLEGAL_PARAMETER;
721 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
725 /* Depending on the session caching (internal/external), the cipher
726 and/or cipher_id values may not be set. Make sure that
727 cipher_id is set and use it for comparison. */
728 if (s->session->cipher)
729 s->session->cipher_id = s->session->cipher->id;
730 if (s->hit && (s->session->cipher_id != c->id))
733 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
735 al=SSL_AD_ILLEGAL_PARAMETER;
736 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
740 s->s3->tmp.new_cipher=c;
742 /* lets get the compression algorithm */
748 comp=ssl3_comp_find(s->ctx->comp_methods,j);
750 if ((j != 0) && (comp == NULL))
752 al=SSL_AD_ILLEGAL_PARAMETER;
753 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
758 s->s3->tmp.new_compression=comp;
763 /* wrong packet length */
764 al=SSL_AD_DECODE_ERROR;
765 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
771 ssl3_send_alert(s,SSL3_AL_FATAL,al);
776 static int ssl3_get_server_certificate(SSL *s)
779 unsigned long n,nc,llen,l;
781 unsigned char *p,*d,*q;
782 STACK_OF(X509) *sk=NULL;
785 int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */
787 n=ssl3_get_message(s,
794 if (!ok) return((int)n);
796 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
798 s->s3->tmp.reuse_message=1;
802 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
804 al=SSL_AD_UNEXPECTED_MESSAGE;
805 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
808 d=p=(unsigned char *)s->init_msg;
810 if ((sk=sk_X509_new_null()) == NULL)
812 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
819 al=SSL_AD_DECODE_ERROR;
820 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
823 for (nc=0; nc<llen; )
828 al=SSL_AD_DECODE_ERROR;
829 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
834 x=d2i_X509(NULL,&q,l);
837 al=SSL_AD_BAD_CERTIFICATE;
838 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
843 al=SSL_AD_DECODE_ERROR;
844 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
847 if (!sk_X509_push(sk,x))
849 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
857 i=ssl_verify_cert_chain(s,sk);
858 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i)
859 #ifndef OPENSSL_NO_KRB5
860 && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK))
861 != (SSL_aKRB5|SSL_kKRB5)
862 #endif /* OPENSSL_NO_KRB5 */
865 al=ssl_verify_alarm_type(s->verify_result);
866 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
869 ERR_clear_error(); /* but we keep s->verify_result */
871 sc=ssl_sess_cert_new();
872 if (sc == NULL) goto err;
874 if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert);
875 s->session->sess_cert=sc;
878 /* Inconsistency alert: cert_chain does include the peer's
879 * certificate, which we don't include in s3_srvr.c */
880 x=sk_X509_value(sk,0);
882 /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/
884 pkey=X509_get_pubkey(x);
886 /* VRS: allow null cert if auth == KRB5 */
887 need_cert = ((s->s3->tmp.new_cipher->algorithms
888 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
889 == (SSL_aKRB5|SSL_kKRB5))? 0: 1;
892 printf("pkey,x = %p, %p\n", pkey,x);
893 printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey));
894 printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name,
895 s->s3->tmp.new_cipher->algorithms, need_cert);
896 #endif /* KSSL_DEBUG */
898 if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey)))
902 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
903 SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
907 i=ssl_cert_type(x,pkey);
908 if (need_cert && i < 0)
912 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,
913 SSL_R_UNKNOWN_CERTIFICATE_TYPE);
919 sc->peer_cert_type=i;
920 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
921 /* Why would the following ever happen?
922 * We just created sc a couple of lines ago. */
923 if (sc->peer_pkeys[i].x509 != NULL)
924 X509_free(sc->peer_pkeys[i].x509);
925 sc->peer_pkeys[i].x509=x;
926 sc->peer_key= &(sc->peer_pkeys[i]);
928 if (s->session->peer != NULL)
929 X509_free(s->session->peer);
930 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
935 sc->peer_cert_type=i;
938 if (s->session->peer != NULL)
939 X509_free(s->session->peer);
940 s->session->peer=NULL;
942 s->session->verify_result = s->verify_result;
950 ssl3_send_alert(s,SSL3_AL_FATAL,al);
955 sk_X509_pop_free(sk,X509_free);
959 static int ssl3_get_key_exchange(SSL *s)
961 #ifndef OPENSSL_NO_RSA
962 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
965 unsigned char *param,*p;
966 int al,i,j,param_len,ok;
969 #ifndef OPENSSL_NO_RSA
972 #ifndef OPENSSL_NO_DH
975 #ifndef OPENSSL_NO_ECDH
977 BN_CTX *bn_ctx = NULL;
978 EC_POINT *srvr_ecpoint = NULL;
980 int encoded_pt_len = 0;
983 /* use same message size as in ssl3_get_certificate_request()
984 * as ServerKeyExchange message may be skipped */
985 n=ssl3_get_message(s,
986 SSL3_ST_CR_KEY_EXCH_A,
987 SSL3_ST_CR_KEY_EXCH_B,
992 if (!ok) return((int)n);
994 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
996 s->s3->tmp.reuse_message=1;
1000 param=p=(unsigned char *)s->init_msg;
1002 if (s->session->sess_cert != NULL)
1004 #ifndef OPENSSL_NO_RSA
1005 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1007 RSA_free(s->session->sess_cert->peer_rsa_tmp);
1008 s->session->sess_cert->peer_rsa_tmp=NULL;
1011 #ifndef OPENSSL_NO_DH
1012 if (s->session->sess_cert->peer_dh_tmp)
1014 DH_free(s->session->sess_cert->peer_dh_tmp);
1015 s->session->sess_cert->peer_dh_tmp=NULL;
1018 #ifndef OPENSSL_NO_ECDH
1019 if (s->session->sess_cert->peer_ecdh_tmp)
1021 EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp);
1022 s->session->sess_cert->peer_ecdh_tmp=NULL;
1028 s->session->sess_cert=ssl_sess_cert_new();
1032 alg=s->s3->tmp.new_cipher->algorithms;
1033 EVP_MD_CTX_init(&md_ctx);
1035 #ifndef OPENSSL_NO_RSA
1038 if ((rsa=RSA_new()) == NULL)
1040 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1047 al=SSL_AD_DECODE_ERROR;
1048 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
1051 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
1053 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1062 al=SSL_AD_DECODE_ERROR;
1063 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
1066 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
1068 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1074 /* this should be because we are using an export cipher */
1076 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1079 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1082 s->session->sess_cert->peer_rsa_tmp=rsa;
1085 #else /* OPENSSL_NO_RSA */
1089 #ifndef OPENSSL_NO_DH
1090 else if (alg & SSL_kEDH)
1092 if ((dh=DH_new()) == NULL)
1094 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
1101 al=SSL_AD_DECODE_ERROR;
1102 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
1105 if (!(dh->p=BN_bin2bn(p,i,NULL)))
1107 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1116 al=SSL_AD_DECODE_ERROR;
1117 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
1120 if (!(dh->g=BN_bin2bn(p,i,NULL)))
1122 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1131 al=SSL_AD_DECODE_ERROR;
1132 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1135 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1137 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1143 #ifndef OPENSSL_NO_RSA
1145 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1150 #ifndef OPENSSL_NO_DSA
1151 else if (alg & SSL_aDSS)
1152 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509);
1154 /* else anonymous DH, so no certificate or pkey. */
1156 s->session->sess_cert->peer_dh_tmp=dh;
1159 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1161 al=SSL_AD_ILLEGAL_PARAMETER;
1162 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1165 #endif /* !OPENSSL_NO_DH */
1167 #ifndef OPENSSL_NO_ECDH
1168 else if (alg & SSL_kECDHE)
1170 if ((ecdh=EC_KEY_new()) == NULL)
1172 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1176 /* Extract elliptic curve parameters and the
1177 * server's ephemeral ECDH public key.
1178 * Keep accumulating lengths of various components in
1179 * param_len and make sure it never exceeds n.
1182 /* XXX: For now we only support named (not generic) curves
1183 * and the ECParameters in this case is just two bytes.
1186 if ((param_len > n) ||
1187 (*p != NAMED_CURVE_TYPE) ||
1188 ((curve_nid = curve_id2nid(*(p + 1))) == 0))
1190 al=SSL_AD_INTERNAL_ERROR;
1191 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
1195 if (!(ecdh->group=EC_GROUP_new_by_nid(curve_nid)))
1197 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB);
1201 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1202 (EC_GROUP_get_degree(ecdh->group) > 163))
1204 al=SSL_AD_EXPORT_RESTRICTION;
1205 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1211 /* Next, get the encoded ECPoint */
1212 if (((srvr_ecpoint = EC_POINT_new(ecdh->group)) == NULL) ||
1213 ((bn_ctx = BN_CTX_new()) == NULL))
1215 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1219 encoded_pt_len = *p; /* length of encoded point */
1221 param_len += (1 + encoded_pt_len);
1222 if ((param_len > n) ||
1223 (EC_POINT_oct2point(ecdh->group, srvr_ecpoint,
1224 p, encoded_pt_len, bn_ctx) == 0))
1226 al=SSL_AD_DECODE_ERROR;
1227 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT);
1234 /* The ECC/TLS specification does not mention
1235 * the use of DSA to sign ECParameters in the server
1236 * key exchange message. We do support RSA and ECDSA.
1239 #ifndef OPENSSL_NO_RSA
1240 else if (alg & SSL_aRSA)
1241 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1243 #ifndef OPENSSL_NO_ECDSA
1244 else if (alg & SSL_aECDSA)
1245 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1247 /* else anonymous ECDH, so no certificate or pkey. */
1248 ecdh->pub_key = srvr_ecpoint;
1249 s->session->sess_cert->peer_ecdh_tmp=ecdh;
1251 BN_CTX_free(bn_ctx);
1252 srvr_ecpoint = NULL;
1254 else if (alg & SSL_kECDH)
1256 al=SSL_AD_UNEXPECTED_MESSAGE;
1257 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
1260 #endif /* !OPENSSL_NO_ECDH */
1263 al=SSL_AD_HANDSHAKE_FAILURE;
1264 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1269 /* p points to the next byte, there are 'n' bytes left */
1271 /* if it was signed, check the signature */
1276 j=EVP_PKEY_size(pkey);
1278 if ((i != n) || (n > j) || (n <= 0))
1280 /* wrong packet length */
1281 al=SSL_AD_DECODE_ERROR;
1282 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1286 #ifndef OPENSSL_NO_RSA
1287 if (pkey->type == EVP_PKEY_RSA)
1293 for (num=2; num > 0; num--)
1295 EVP_DigestInit_ex(&md_ctx,(num == 2)
1296 ?s->ctx->md5:s->ctx->sha1, NULL);
1297 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1298 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1299 EVP_DigestUpdate(&md_ctx,param,param_len);
1300 EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i);
1304 i=RSA_verify(NID_md5_sha1, md_buf, j, p, n,
1308 al=SSL_AD_DECRYPT_ERROR;
1309 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1315 al=SSL_AD_DECRYPT_ERROR;
1316 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1322 #ifndef OPENSSL_NO_DSA
1323 if (pkey->type == EVP_PKEY_DSA)
1326 EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL);
1327 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1328 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1329 EVP_VerifyUpdate(&md_ctx,param,param_len);
1330 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1333 al=SSL_AD_DECRYPT_ERROR;
1334 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1340 #ifndef OPENSSL_NO_ECDSA
1341 if (pkey->type == EVP_PKEY_EC)
1343 /* let's do ECDSA */
1344 EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1345 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1346 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1347 EVP_VerifyUpdate(&md_ctx,param,param_len);
1348 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1351 al=SSL_AD_DECRYPT_ERROR;
1352 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1359 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1365 /* still data left over */
1366 if (!(alg & SSL_aNULL))
1368 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1373 al=SSL_AD_DECODE_ERROR;
1374 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1378 EVP_PKEY_free(pkey);
1379 EVP_MD_CTX_cleanup(&md_ctx);
1382 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1384 EVP_PKEY_free(pkey);
1385 #ifndef OPENSSL_NO_RSA
1389 #ifndef OPENSSL_NO_DH
1393 #ifndef OPENSSL_NO_ECDH
1394 BN_CTX_free(bn_ctx);
1395 EC_POINT_free(srvr_ecpoint);
1399 EVP_MD_CTX_cleanup(&md_ctx);
1403 static int ssl3_get_certificate_request(SSL *s)
1406 unsigned long n,nc,l;
1407 unsigned int llen,ctype_num,i;
1409 unsigned char *p,*d,*q;
1410 STACK_OF(X509_NAME) *ca_sk=NULL;
1412 n=ssl3_get_message(s,
1413 SSL3_ST_CR_CERT_REQ_A,
1414 SSL3_ST_CR_CERT_REQ_B,
1419 if (!ok) return((int)n);
1421 s->s3->tmp.cert_req=0;
1423 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1425 s->s3->tmp.reuse_message=1;
1429 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1431 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1432 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1436 /* TLS does not like anon-DH with client cert */
1437 if (s->version > SSL3_VERSION)
1439 l=s->s3->tmp.new_cipher->algorithms;
1442 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1443 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1448 d=p=(unsigned char *)s->init_msg;
1450 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1452 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1456 /* get the certificate types */
1458 if (ctype_num > SSL3_CT_NUMBER)
1459 ctype_num=SSL3_CT_NUMBER;
1460 for (i=0; i<ctype_num; i++)
1461 s->s3->tmp.ctype[i]= p[i];
1464 /* get the CA RDNs */
1469 out=fopen("/tmp/vsign.der","w");
1470 fwrite(p,1,llen,out);
1475 if ((llen+ctype_num+2+1) != n)
1477 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1478 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1482 for (nc=0; nc<llen; )
1485 if ((l+nc+2) > llen)
1487 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1488 goto cont; /* netscape bugs */
1489 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1490 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1496 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1498 /* If netscape tolerance is on, ignore errors */
1499 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1503 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1504 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1511 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1512 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1515 if (!sk_X509_NAME_push(ca_sk,xn))
1517 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1531 /* we should setup a certificate to return.... */
1532 s->s3->tmp.cert_req=1;
1533 s->s3->tmp.ctype_num=ctype_num;
1534 if (s->s3->tmp.ca_names != NULL)
1535 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1536 s->s3->tmp.ca_names=ca_sk;
1541 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1545 static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b)
1547 return(X509_NAME_cmp(*a,*b));
1550 static int ssl3_get_server_done(SSL *s)
1555 n=ssl3_get_message(s,
1556 SSL3_ST_CR_SRVR_DONE_A,
1557 SSL3_ST_CR_SRVR_DONE_B,
1558 SSL3_MT_SERVER_DONE,
1559 30, /* should be very small, like 0 :-) */
1562 if (!ok) return((int)n);
1565 /* should contain no data */
1566 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1567 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1574 static int ssl3_send_client_key_exchange(SSL *s)
1576 unsigned char *p,*d;
1579 #ifndef OPENSSL_NO_RSA
1581 EVP_PKEY *pkey=NULL;
1583 #ifndef OPENSSL_NO_KRB5
1585 #endif /* OPENSSL_NO_KRB5 */
1586 #ifndef OPENSSL_NO_ECDH
1587 EC_KEY *clnt_ecdh = NULL;
1588 EC_POINT *srvr_ecpoint = NULL;
1589 EVP_PKEY *srvr_pub_pkey = NULL;
1590 unsigned char *encodedPoint = NULL;
1591 int encoded_pt_len = 0;
1592 BN_CTX * bn_ctx = NULL;
1595 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1597 d=(unsigned char *)s->init_buf->data;
1600 l=s->s3->tmp.new_cipher->algorithms;
1602 /* Fool emacs indentation */
1604 #ifndef OPENSSL_NO_RSA
1605 else if (l & SSL_kRSA)
1608 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1610 if (s->session->sess_cert->peer_rsa_tmp != NULL)
1611 rsa=s->session->sess_cert->peer_rsa_tmp;
1614 pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
1615 if ((pkey == NULL) ||
1616 (pkey->type != EVP_PKEY_RSA) ||
1617 (pkey->pkey.rsa == NULL))
1619 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
1623 EVP_PKEY_free(pkey);
1626 tmp_buf[0]=s->client_version>>8;
1627 tmp_buf[1]=s->client_version&0xff;
1628 if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
1631 s->session->master_key_length=sizeof tmp_buf;
1634 /* Fix buf for TLS and beyond */
1635 if (s->version > SSL3_VERSION)
1637 n=RSA_public_encrypt(sizeof tmp_buf,
1638 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1640 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1641 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1645 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1649 /* Fix buf for TLS and beyond */
1650 if (s->version > SSL3_VERSION)
1656 s->session->master_key_length=
1657 s->method->ssl3_enc->generate_master_secret(s,
1658 s->session->master_key,
1659 tmp_buf,sizeof tmp_buf);
1660 OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
1663 #ifndef OPENSSL_NO_KRB5
1664 else if (l & SSL_kKRB5)
1666 krb5_error_code krb5rc;
1667 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1668 /* krb5_data krb5_ap_req; */
1669 krb5_data *enc_ticket;
1670 krb5_data authenticator, *authp = NULL;
1671 EVP_CIPHER_CTX ciph_ctx;
1672 EVP_CIPHER *enc = NULL;
1673 unsigned char iv[EVP_MAX_IV_LENGTH];
1674 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1675 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
1676 + EVP_MAX_IV_LENGTH];
1677 int padl, outl = sizeof(epms);
1679 EVP_CIPHER_CTX_init(&ciph_ctx);
1682 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
1684 #endif /* KSSL_DEBUG */
1688 if (KRB5SENDAUTH) authp = &authenticator;
1689 #endif /* KRB5SENDAUTH */
1691 krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
1693 enc = kssl_map_enc(kssl_ctx->enctype);
1698 printf("kssl_cget_tkt rtn %d\n", krb5rc);
1699 if (krb5rc && kssl_err.text)
1700 printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
1702 #endif /* KSSL_DEBUG */
1706 ssl3_send_alert(s,SSL3_AL_FATAL,
1707 SSL_AD_HANDSHAKE_FAILURE);
1708 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1713 /* 20010406 VRS - Earlier versions used KRB5 AP_REQ
1714 ** in place of RFC 2712 KerberosWrapper, as in:
1716 ** Send ticket (copy to *p, set n = length)
1717 ** n = krb5_ap_req.length;
1718 ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
1719 ** if (krb5_ap_req.data)
1720 ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
1722 ** Now using real RFC 2712 KerberosWrapper
1723 ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
1724 ** Note: 2712 "opaque" types are here replaced
1725 ** with a 2-byte length followed by the value.
1727 ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
1728 ** Where "xx xx" = length bytes. Shown here with
1729 ** optional authenticator omitted.
1732 /* KerberosWrapper.Ticket */
1733 s2n(enc_ticket->length,p);
1734 memcpy(p, enc_ticket->data, enc_ticket->length);
1735 p+= enc_ticket->length;
1736 n = enc_ticket->length + 2;
1738 /* KerberosWrapper.Authenticator */
1739 if (authp && authp->length)
1741 s2n(authp->length,p);
1742 memcpy(p, authp->data, authp->length);
1744 n+= authp->length + 2;
1752 s2n(0,p);/* null authenticator length */
1756 if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
1759 /* 20010420 VRS. Tried it this way; failed.
1760 ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
1761 ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
1762 ** kssl_ctx->length);
1763 ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
1766 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1767 EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
1769 EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
1771 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
1773 if (outl > sizeof epms)
1775 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1778 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1780 /* KerberosWrapper.EncryptedPreMasterSecret */
1782 memcpy(p, epms, outl);
1786 s->session->master_key_length=
1787 s->method->ssl3_enc->generate_master_secret(s,
1788 s->session->master_key,
1789 tmp_buf, sizeof tmp_buf);
1791 OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
1792 OPENSSL_cleanse(epms, outl);
1795 #ifndef OPENSSL_NO_DH
1796 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1798 DH *dh_srvr,*dh_clnt;
1800 if (s->session->sess_cert->peer_dh_tmp != NULL)
1801 dh_srvr=s->session->sess_cert->peer_dh_tmp;
1804 /* we get them from the cert */
1805 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1806 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1810 /* generate a new random key */
1811 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1813 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1816 if (!DH_generate_key(dh_clnt))
1818 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1822 /* use the 'p' output buffer for the DH key, but
1823 * make sure to clear it out afterwards */
1825 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1829 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1833 /* generate master key from the result */
1834 s->session->master_key_length=
1835 s->method->ssl3_enc->generate_master_secret(s,
1836 s->session->master_key,p,n);
1840 /* send off the data */
1841 n=BN_num_bytes(dh_clnt->pub_key);
1843 BN_bn2bin(dh_clnt->pub_key,p);
1848 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1852 #ifndef OPENSSL_NO_ECDH
1853 else if ((l & SSL_kECDH) || (l & SSL_kECDHE))
1855 EC_GROUP *srvr_group = NULL;
1856 int ecdh_clnt_cert = 0;
1858 /* Did we send out the client's
1859 * ECDH share for use in premaster
1860 * computation as part of client certificate?
1861 * If so, set ecdh_clnt_cert to 1.
1863 if ((l & SSL_kECDH) && (s->cert != NULL))
1865 /* XXX: For now, we do not support client
1866 * authentication using ECDH certificates.
1867 * To add such support, one needs to add
1868 * code that checks for appropriate
1869 * conditions and sets ecdh_clnt_cert to 1.
1870 * For example, the cert have an ECC
1871 * key on the same curve as the server's
1872 * and the key should be authorized for
1875 * One also needs to add code in ssl3_connect
1876 * to skip sending the certificate verify
1879 * if ((s->cert->key->privatekey != NULL) &&
1880 * (s->cert->key->privatekey->type ==
1881 * EVP_PKEY_EC) && ...)
1882 * ecdh_clnt_cert = 1;
1886 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
1888 srvr_group = s->session->sess_cert-> \
1889 peer_ecdh_tmp->group;
1890 srvr_ecpoint = s->session->sess_cert-> \
1891 peer_ecdh_tmp->pub_key;
1895 /* Get the Server Public Key from Cert */
1896 srvr_pub_pkey = X509_get_pubkey(s->session-> \
1897 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1898 if ((srvr_pub_pkey == NULL) ||
1899 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
1900 (srvr_pub_pkey->pkey.eckey == NULL))
1902 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1903 ERR_R_INTERNAL_ERROR);
1907 srvr_group = srvr_pub_pkey->pkey.eckey->group;
1909 srvr_pub_pkey->pkey.eckey->pub_key;
1912 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
1914 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1915 ERR_R_INTERNAL_ERROR);
1919 if ((clnt_ecdh=EC_KEY_new()) == NULL)
1921 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1925 clnt_ecdh->group = srvr_group;
1928 /* Reuse key info from our certificate
1929 * We only need our private key to perform
1930 * the ECDH computation.
1932 clnt_ecdh->priv_key = BN_dup(s->cert->key-> \
1933 privatekey->pkey.eckey->priv_key);
1937 /* Generate a new ECDH key pair */
1938 if (!(EC_KEY_generate_key(clnt_ecdh)))
1940 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
1945 /* use the 'p' output buffer for the ECDH key, but
1946 * make sure to clear it out afterwards
1949 n=ECDH_compute_key(p, srvr_ecpoint, clnt_ecdh);
1952 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1957 /* generate master key from the result */
1958 s->session->master_key_length = s->method->ssl3_enc \
1959 -> generate_master_secret(s,
1960 s->session->master_key,
1963 memset(p, 0, n); /* clean up */
1967 /* Send empty client key exch message */
1972 /* First check the size of encoding and
1973 * allocate memory accordingly.
1976 EC_POINT_point2oct(clnt_ecdh->group,
1978 POINT_CONVERSION_UNCOMPRESSED,
1981 encodedPoint = (unsigned char *)
1982 OPENSSL_malloc(encoded_pt_len *
1983 sizeof(unsigned char));
1984 bn_ctx = BN_CTX_new();
1985 if ((encodedPoint == NULL) ||
1988 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1992 /* Encode the public key */
1993 n = EC_POINT_point2oct(clnt_ecdh->group,
1995 POINT_CONVERSION_UNCOMPRESSED,
1996 encodedPoint, encoded_pt_len, bn_ctx);
1998 *p = n; /* length of encoded point */
1999 /* Encoded point will be copied here */
2001 /* copy the point */
2002 memcpy((unsigned char *)p, encodedPoint, n);
2003 /* increment n to account for length field */
2007 /* Free allocated memory */
2008 BN_CTX_free(bn_ctx);
2009 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2010 if (clnt_ecdh != NULL)
2012 /* group is shared */
2013 clnt_ecdh->group = NULL;
2014 EC_KEY_free(clnt_ecdh);
2016 EVP_PKEY_free(srvr_pub_pkey);
2018 #endif /* !OPENSSL_NO_ECDH */
2021 ssl3_send_alert(s, SSL3_AL_FATAL,
2022 SSL_AD_HANDSHAKE_FAILURE);
2023 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
2024 ERR_R_INTERNAL_ERROR);
2028 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
2031 s->state=SSL3_ST_CW_KEY_EXCH_B;
2032 /* number of bytes to write */
2037 /* SSL3_ST_CW_KEY_EXCH_B */
2038 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2040 #ifndef OPENSSL_NO_ECDH
2041 BN_CTX_free(bn_ctx);
2042 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
2043 if (clnt_ecdh != NULL)
2045 /* group is shared */
2046 clnt_ecdh->group = NULL;
2047 EC_KEY_free(clnt_ecdh);
2049 EVP_PKEY_free(srvr_pub_pkey);
2054 static int ssl3_send_client_verify(SSL *s)
2056 unsigned char *p,*d;
2057 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
2059 #ifndef OPENSSL_NO_RSA
2063 #ifndef OPENSSL_NO_DSA
2067 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
2069 d=(unsigned char *)s->init_buf->data;
2071 pkey=s->cert->key->privatekey;
2073 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
2074 &(data[MD5_DIGEST_LENGTH]));
2076 #ifndef OPENSSL_NO_RSA
2077 if (pkey->type == EVP_PKEY_RSA)
2079 s->method->ssl3_enc->cert_verify_mac(s,
2080 &(s->s3->finish_dgst1),&(data[0]));
2081 if (RSA_sign(NID_md5_sha1, data,
2082 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
2083 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
2085 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
2093 #ifndef OPENSSL_NO_DSA
2094 if (pkey->type == EVP_PKEY_DSA)
2096 if (!DSA_sign(pkey->save_type,
2097 &(data[MD5_DIGEST_LENGTH]),
2098 SHA_DIGEST_LENGTH,&(p[2]),
2099 (unsigned int *)&j,pkey->pkey.dsa))
2101 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
2109 #ifndef OPENSSL_NO_ECDSA
2110 if (pkey->type == EVP_PKEY_EC)
2112 if (!ECDSA_sign(pkey->save_type,
2113 &(data[MD5_DIGEST_LENGTH]),
2114 SHA_DIGEST_LENGTH,&(p[2]),
2115 (unsigned int *)&j,pkey->pkey.eckey))
2117 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,
2127 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
2130 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
2133 s->init_num=(int)n+4;
2136 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2141 static int ssl3_send_client_certificate(SSL *s)
2144 EVP_PKEY *pkey=NULL;
2148 if (s->state == SSL3_ST_CW_CERT_A)
2150 if ((s->cert == NULL) ||
2151 (s->cert->key->x509 == NULL) ||
2152 (s->cert->key->privatekey == NULL))
2153 s->state=SSL3_ST_CW_CERT_B;
2155 s->state=SSL3_ST_CW_CERT_C;
2158 /* We need to get a client cert */
2159 if (s->state == SSL3_ST_CW_CERT_B)
2161 /* If we get an error, we need to
2162 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
2163 * We then get retied later */
2165 if (s->ctx->client_cert_cb != NULL)
2166 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
2169 s->rwstate=SSL_X509_LOOKUP;
2172 s->rwstate=SSL_NOTHING;
2173 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
2175 s->state=SSL3_ST_CW_CERT_B;
2176 if ( !SSL_use_certificate(s,x509) ||
2177 !SSL_use_PrivateKey(s,pkey))
2183 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
2186 if (x509 != NULL) X509_free(x509);
2187 if (pkey != NULL) EVP_PKEY_free(pkey);
2190 if (s->version == SSL3_VERSION)
2192 s->s3->tmp.cert_req=0;
2193 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
2198 s->s3->tmp.cert_req=2;
2202 /* Ok, we have a cert */
2203 s->state=SSL3_ST_CW_CERT_C;
2206 if (s->state == SSL3_ST_CW_CERT_C)
2208 s->state=SSL3_ST_CW_CERT_D;
2209 l=ssl3_output_cert_chain(s,
2210 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
2214 /* SSL3_ST_CW_CERT_D */
2215 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2218 #define has_bits(i,m) (((i)&(m)) == (m))
2220 static int ssl3_check_cert_and_algorithm(SSL *s)
2224 EVP_PKEY *pkey=NULL;
2226 #ifndef OPENSSL_NO_RSA
2229 #ifndef OPENSSL_NO_DH
2233 sc=s->session->sess_cert;
2237 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR);
2241 algs=s->s3->tmp.new_cipher->algorithms;
2243 /* we don't have a certificate */
2244 if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5))
2247 #ifndef OPENSSL_NO_RSA
2248 rsa=s->session->sess_cert->peer_rsa_tmp;
2250 #ifndef OPENSSL_NO_DH
2251 dh=s->session->sess_cert->peer_dh_tmp;
2254 /* This is the passed certificate */
2256 idx=sc->peer_cert_type;
2257 #ifndef OPENSSL_NO_ECDH
2258 if (idx == SSL_PKEY_ECC)
2260 if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509,
2261 s->s3->tmp.new_cipher) == 0)
2262 { /* check failed */
2263 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT);
2272 pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509);
2273 i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey);
2274 EVP_PKEY_free(pkey);
2277 /* Check that we have a certificate if we require one */
2278 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
2280 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
2283 #ifndef OPENSSL_NO_DSA
2284 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
2286 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
2290 #ifndef OPENSSL_NO_RSA
2291 if ((algs & SSL_kRSA) &&
2292 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
2294 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
2298 #ifndef OPENSSL_NO_DH
2299 if ((algs & SSL_kEDH) &&
2300 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
2302 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
2305 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
2307 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
2310 #ifndef OPENSSL_NO_DSA
2311 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
2313 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
2319 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP))
2321 #ifndef OPENSSL_NO_RSA
2322 if (algs & SSL_kRSA)
2325 || RSA_size(rsa) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2327 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
2333 #ifndef OPENSSL_NO_DH
2334 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
2337 || DH_size(dh) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher))
2339 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
2346 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
2352 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
2358 #ifndef OPENSSL_NO_ECDH
2359 /* This is the complement of nid2curve_id in s3_srvr.c. */
2360 static int curve_id2nid(int curve_id)
2362 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001) */
2363 static int nid_list[26] =
2366 NID_sect163k1, /* sect163k1 (1) */
2367 NID_sect163r1, /* sect163r1 (2) */
2368 NID_sect163r2, /* sect163r2 (3) */
2369 NID_sect193r1, /* sect193r1 (4) */
2370 NID_sect193r2, /* sect193r2 (5) */
2371 NID_sect233k1, /* sect233k1 (6) */
2372 NID_sect233r1, /* sect233r1 (7) */
2373 NID_sect239k1, /* sect239k1 (8) */
2374 NID_sect283k1, /* sect283k1 (9) */
2375 NID_sect283r1, /* sect283r1 (10) */
2376 NID_sect409k1, /* sect409k1 (11) */
2377 NID_sect409r1, /* sect409r1 (12) */
2378 NID_sect571k1, /* sect571k1 (13) */
2379 NID_sect571r1, /* sect571r1 (14) */
2380 NID_secp160k1, /* secp160k1 (15) */
2381 NID_secp160r1, /* secp160r1 (16) */
2382 NID_secp160r2, /* secp160r2 (17) */
2383 NID_secp192k1, /* secp192k1 (18) */
2384 NID_X9_62_prime192v1, /* secp192r1 (19) */
2385 NID_secp224k1, /* secp224k1 (20) */
2386 NID_secp224r1, /* secp224r1 (21) */
2387 NID_secp256k1, /* secp256k1 (22) */
2388 NID_X9_62_prime256v1, /* secp256r1 (23) */
2389 NID_secp384r1, /* secp384r1 (24) */
2390 NID_secp521r1 /* secp521r1 (25) */
2393 if ((curve_id < 1) || (curve_id > 25)) return 0;
2395 return nid_list[curve_id];