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.
125 #define REUSE_CIPHER_BUG
126 #define NETSCAPE_HANG_BUG
129 #include "ssl_locl.h"
130 #include "kssl_lcl.h"
131 #include <openssl/buffer.h>
132 #include <openssl/rand.h>
133 #include <openssl/objects.h>
134 #include <openssl/evp.h>
135 #include <openssl/x509.h>
136 #include <openssl/dh.h>
137 #include <openssl/bn.h>
138 #ifndef OPENSSL_NO_KRB5
139 #include <openssl/krb5_asn.h>
141 #include <openssl/md5.h>
143 static SSL_METHOD *ssl3_get_server_method(int ver);
144 static int ssl3_get_client_hello(SSL *s);
145 static int ssl3_check_client_hello(SSL *s);
146 static int ssl3_send_server_hello(SSL *s);
147 static int ssl3_send_server_key_exchange(SSL *s);
148 static int ssl3_send_certificate_request(SSL *s);
149 static int ssl3_send_server_done(SSL *s);
150 static int ssl3_get_client_key_exchange(SSL *s);
151 static int ssl3_get_client_certificate(SSL *s);
152 static int ssl3_get_cert_verify(SSL *s);
153 static int ssl3_send_hello_request(SSL *s);
155 #ifndef OPENSSL_NO_ECDH
156 static int nid2curve_id(int nid);
159 static SSL_METHOD *ssl3_get_server_method(int ver)
161 if (ver == SSL3_VERSION)
162 return(SSLv3_server_method());
167 SSL_METHOD *SSLv3_server_method(void)
170 static SSL_METHOD SSLv3_server_data;
174 CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD);
178 memcpy((char *)&SSLv3_server_data,(char *)sslv3_base_method(),
180 SSLv3_server_data.ssl_accept=ssl3_accept;
181 SSLv3_server_data.get_ssl_method=ssl3_get_server_method;
185 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD);
187 return(&SSLv3_server_data);
190 int ssl3_accept(SSL *s)
193 unsigned long l,Time=time(NULL);
194 void (*cb)(const SSL *ssl,int type,int val)=NULL;
197 int new_state,state,skip=0;
199 RAND_add(&Time,sizeof(Time),0);
203 if (s->info_callback != NULL)
205 else if (s->ctx->info_callback != NULL)
206 cb=s->ctx->info_callback;
208 /* init things to blank */
210 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
214 SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_NO_CERTIFICATE_SET);
224 case SSL_ST_RENEGOTIATE:
226 /* s->state=SSL_ST_ACCEPT; */
230 case SSL_ST_BEFORE|SSL_ST_ACCEPT:
231 case SSL_ST_OK|SSL_ST_ACCEPT:
234 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
236 if ((s->version>>8) != 3)
238 SSLerr(SSL_F_SSL3_ACCEPT, ERR_R_INTERNAL_ERROR);
241 s->type=SSL_ST_ACCEPT;
243 if (s->init_buf == NULL)
245 if ((buf=BUF_MEM_new()) == NULL)
250 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
258 if (!ssl3_setup_buffers(s))
266 if (s->state != SSL_ST_RENEGOTIATE)
268 /* Ok, we now need to push on a buffering BIO so that
269 * the output is sent in a way that TCP likes :-)
271 if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; }
273 ssl3_init_finished_mac(s);
274 s->state=SSL3_ST_SR_CLNT_HELLO_A;
275 s->ctx->stats.sess_accept++;
279 /* s->state == SSL_ST_RENEGOTIATE,
280 * we will just send a HelloRequest */
281 s->ctx->stats.sess_accept_renegotiate++;
282 s->state=SSL3_ST_SW_HELLO_REQ_A;
286 case SSL3_ST_SW_HELLO_REQ_A:
287 case SSL3_ST_SW_HELLO_REQ_B:
290 ret=ssl3_send_hello_request(s);
291 if (ret <= 0) goto end;
292 s->s3->tmp.next_state=SSL3_ST_SW_HELLO_REQ_C;
293 s->state=SSL3_ST_SW_FLUSH;
296 ssl3_init_finished_mac(s);
299 case SSL3_ST_SW_HELLO_REQ_C:
303 case SSL3_ST_SR_CLNT_HELLO_A:
304 case SSL3_ST_SR_CLNT_HELLO_B:
305 case SSL3_ST_SR_CLNT_HELLO_C:
308 ret=ssl3_get_client_hello(s);
309 if (ret <= 0) goto end;
311 s->state=SSL3_ST_SW_SRVR_HELLO_A;
315 case SSL3_ST_SW_SRVR_HELLO_A:
316 case SSL3_ST_SW_SRVR_HELLO_B:
317 ret=ssl3_send_server_hello(s);
318 if (ret <= 0) goto end;
321 s->state=SSL3_ST_SW_CHANGE_A;
323 s->state=SSL3_ST_SW_CERT_A;
327 case SSL3_ST_SW_CERT_A:
328 case SSL3_ST_SW_CERT_B:
329 /* Check if it is anon DH or anon ECDH */
330 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
332 ret=ssl3_send_server_certificate(s);
333 if (ret <= 0) goto end;
337 s->state=SSL3_ST_SW_KEY_EXCH_A;
341 case SSL3_ST_SW_KEY_EXCH_A:
342 case SSL3_ST_SW_KEY_EXCH_B:
343 l=s->s3->tmp.new_cipher->algorithms;
345 /* clear this, it may get reset by
346 * send_server_key_exchange */
347 if ((s->options & SSL_OP_EPHEMERAL_RSA)
348 #ifndef OPENSSL_NO_KRB5
350 #endif /* OPENSSL_NO_KRB5 */
352 /* option SSL_OP_EPHEMERAL_RSA sends temporary RSA key
353 * even when forbidden by protocol specs
354 * (handshake may fail as clients are not required to
355 * be able to handle this) */
356 s->s3->tmp.use_rsa_tmp=1;
358 s->s3->tmp.use_rsa_tmp=0;
361 /* only send if a DH key exchange, fortezza or
362 * RSA but we have a sign only certificate
364 * For ECC ciphersuites, we send a serverKeyExchange
365 * message only if the cipher suite is either
366 * ECDH-anon or ECDHE. In other cases, the
367 * server certificate contains the server's
368 * public key for key exchange.
370 if (s->s3->tmp.use_rsa_tmp
372 || (l & (SSL_DH|SSL_kFZA))
374 && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
375 || (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher)
376 && EVP_PKEY_size(s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)
382 ret=ssl3_send_server_key_exchange(s);
383 if (ret <= 0) goto end;
388 s->state=SSL3_ST_SW_CERT_REQ_A;
392 case SSL3_ST_SW_CERT_REQ_A:
393 case SSL3_ST_SW_CERT_REQ_B:
394 if (/* don't request cert unless asked for it: */
395 !(s->verify_mode & SSL_VERIFY_PEER) ||
396 /* if SSL_VERIFY_CLIENT_ONCE is set,
397 * don't request cert during re-negotiation: */
398 ((s->session->peer != NULL) &&
399 (s->verify_mode & SSL_VERIFY_CLIENT_ONCE)) ||
400 /* never request cert in anonymous ciphersuites
401 * (see section "Certificate request" in SSL 3 drafts
402 * and in RFC 2246): */
403 ((s->s3->tmp.new_cipher->algorithms & SSL_aNULL) &&
404 /* ... except when the application insists on verification
405 * (against the specs, but s3_clnt.c accepts this for SSL 3) */
406 !(s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT)) ||
407 /* never request cert in Kerberos ciphersuites */
408 (s->s3->tmp.new_cipher->algorithms & SSL_aKRB5))
410 /* no cert request */
412 s->s3->tmp.cert_request=0;
413 s->state=SSL3_ST_SW_SRVR_DONE_A;
417 s->s3->tmp.cert_request=1;
418 ret=ssl3_send_certificate_request(s);
419 if (ret <= 0) goto end;
420 #ifndef NETSCAPE_HANG_BUG
421 s->state=SSL3_ST_SW_SRVR_DONE_A;
423 s->state=SSL3_ST_SW_FLUSH;
424 s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
430 case SSL3_ST_SW_SRVR_DONE_A:
431 case SSL3_ST_SW_SRVR_DONE_B:
432 ret=ssl3_send_server_done(s);
433 if (ret <= 0) goto end;
434 s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
435 s->state=SSL3_ST_SW_FLUSH;
439 case SSL3_ST_SW_FLUSH:
440 /* number of bytes to be flushed */
441 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
444 s->rwstate=SSL_WRITING;
445 num1=BIO_flush(s->wbio);
446 if (num1 <= 0) { ret= -1; goto end; }
447 s->rwstate=SSL_NOTHING;
450 s->state=s->s3->tmp.next_state;
453 case SSL3_ST_SR_CERT_A:
454 case SSL3_ST_SR_CERT_B:
455 /* Check for second client hello (MS SGC) */
456 ret = ssl3_check_client_hello(s);
460 s->state = SSL3_ST_SR_CLNT_HELLO_C;
462 if (s->s3->tmp.cert_request)
464 ret=ssl3_get_client_certificate(s);
465 if (ret <= 0) goto end;
468 s->state=SSL3_ST_SR_KEY_EXCH_A;
472 case SSL3_ST_SR_KEY_EXCH_A:
473 case SSL3_ST_SR_KEY_EXCH_B:
474 ret=ssl3_get_client_key_exchange(s);
479 /* For the ECDH ciphersuites when
480 * the client sends its ECDH pub key in
481 * a certificate, the CertificateVerify
482 * message is not sent.
484 s->state=SSL3_ST_SR_FINISHED_A;
489 s->state=SSL3_ST_SR_CERT_VRFY_A;
492 /* We need to get hashes here so if there is
493 * a client cert, it can be verified
495 s->method->ssl3_enc->cert_verify_mac(s,
496 &(s->s3->finish_dgst1),
497 &(s->s3->tmp.cert_verify_md[0]));
498 s->method->ssl3_enc->cert_verify_mac(s,
499 &(s->s3->finish_dgst2),
500 &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]));
504 case SSL3_ST_SR_CERT_VRFY_A:
505 case SSL3_ST_SR_CERT_VRFY_B:
507 /* we should decide if we expected this one */
508 ret=ssl3_get_cert_verify(s);
509 if (ret <= 0) goto end;
511 s->state=SSL3_ST_SR_FINISHED_A;
515 case SSL3_ST_SR_FINISHED_A:
516 case SSL3_ST_SR_FINISHED_B:
517 ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A,
518 SSL3_ST_SR_FINISHED_B);
519 if (ret <= 0) goto end;
523 s->state=SSL3_ST_SW_CHANGE_A;
527 case SSL3_ST_SW_CHANGE_A:
528 case SSL3_ST_SW_CHANGE_B:
530 s->session->cipher=s->s3->tmp.new_cipher;
531 if (!s->method->ssl3_enc->setup_key_block(s))
532 { ret= -1; goto end; }
534 ret=ssl3_send_change_cipher_spec(s,
535 SSL3_ST_SW_CHANGE_A,SSL3_ST_SW_CHANGE_B);
537 if (ret <= 0) goto end;
538 s->state=SSL3_ST_SW_FINISHED_A;
541 if (!s->method->ssl3_enc->change_cipher_state(s,
542 SSL3_CHANGE_CIPHER_SERVER_WRITE))
550 case SSL3_ST_SW_FINISHED_A:
551 case SSL3_ST_SW_FINISHED_B:
552 ret=ssl3_send_finished(s,
553 SSL3_ST_SW_FINISHED_A,SSL3_ST_SW_FINISHED_B,
554 s->method->ssl3_enc->server_finished_label,
555 s->method->ssl3_enc->server_finished_label_len);
556 if (ret <= 0) goto end;
557 s->state=SSL3_ST_SW_FLUSH;
559 s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A;
561 s->s3->tmp.next_state=SSL_ST_OK;
566 /* clean a few things up */
567 ssl3_cleanup_key_block(s);
569 BUF_MEM_free(s->init_buf);
572 /* remove buffering on output */
573 ssl_free_wbio_buffer(s);
577 if (s->new_session == 2) /* skipped if we just sent a HelloRequest */
579 /* actually not necessarily a 'new' session unless
580 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
584 ssl_update_cache(s,SSL_SESS_CACHE_SERVER);
586 s->ctx->stats.sess_accept_good++;
588 s->handshake_func=ssl3_accept;
590 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
598 SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_UNKNOWN_STATE);
604 if (!s->s3->tmp.reuse_message && !skip)
608 if ((ret=BIO_flush(s->wbio)) <= 0)
613 if ((cb != NULL) && (s->state != state))
617 cb(s,SSL_CB_ACCEPT_LOOP,1);
624 /* BIO_flush(s->wbio); */
628 cb(s,SSL_CB_ACCEPT_EXIT,ret);
632 static int ssl3_send_hello_request(SSL *s)
636 if (s->state == SSL3_ST_SW_HELLO_REQ_A)
638 p=(unsigned char *)s->init_buf->data;
639 *(p++)=SSL3_MT_HELLO_REQUEST;
644 s->state=SSL3_ST_SW_HELLO_REQ_B;
645 /* number of bytes to write */
650 /* SSL3_ST_SW_HELLO_REQ_B */
651 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
654 static int ssl3_check_client_hello(SSL *s)
659 /* this function is called when we really expect a Certificate message,
660 * so permit appropriate message length */
661 n=ssl3_get_message(s,
667 if (!ok) return((int)n);
668 s->s3->tmp.reuse_message = 1;
669 if (s->s3->tmp.message_type == SSL3_MT_CLIENT_HELLO)
671 /* Throw away what we have done so far in the current handshake,
672 * which will now be aborted. (A full SSL_clear would be too much.)
673 * I hope that tmp.dh is the only thing that may need to be cleared
674 * when a handshake is not completed ... */
675 #ifndef OPENSSL_NO_DH
676 if (s->s3->tmp.dh != NULL)
678 DH_free(s->s3->tmp.dh);
679 s->s3->tmp.dh = NULL;
687 static int ssl3_get_client_hello(SSL *s)
689 int i,j,ok,al,ret= -1;
692 unsigned char *p,*d,*q;
695 STACK_OF(SSL_CIPHER) *ciphers=NULL;
697 /* We do this so that we will respond with our native type.
698 * If we are TLSv1 and we get SSLv3, we will respond with TLSv1,
699 * This down switching should be handled by a different method.
700 * If we are SSLv3, we will respond with SSLv3, even if prompted with
703 if (s->state == SSL3_ST_SR_CLNT_HELLO_A)
706 s->state=SSL3_ST_SR_CLNT_HELLO_B;
708 n=ssl3_get_message(s,
709 SSL3_ST_SR_CLNT_HELLO_B,
710 SSL3_ST_SR_CLNT_HELLO_C,
711 SSL3_MT_CLIENT_HELLO,
712 SSL3_RT_MAX_PLAIN_LENGTH,
715 if (!ok) return((int)n);
716 d=p=(unsigned char *)s->init_msg;
718 /* use version from inside client hello, not from record header
719 * (may differ: see RFC 2246, Appendix E, second paragraph) */
720 s->client_version=(((int)p[0])<<8)|(int)p[1];
723 if (s->client_version < s->version)
725 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO, SSL_R_WRONG_VERSION_NUMBER);
726 if ((s->client_version>>8) == SSL3_VERSION_MAJOR)
728 /* similar to ssl3_get_record, send alert using remote version number */
729 s->version = s->client_version;
731 al = SSL_AD_PROTOCOL_VERSION;
735 /* load the client random */
736 memcpy(s->s3->client_random,p,SSL3_RANDOM_SIZE);
739 /* get the session-id */
743 /* Versions before 0.9.7 always allow session reuse during renegotiation
744 * (i.e. when s->new_session is true), option
745 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is new with 0.9.7.
746 * Maybe this optional behaviour should always have been the default,
747 * but we cannot safely change the default behaviour (or new applications
748 * might be written that become totally unsecure when compiled with
749 * an earlier library version)
751 if (j == 0 || (s->new_session && (s->options & SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION)))
753 if (!ssl_get_new_session(s,1))
758 i=ssl_get_prev_session(s,p,j);
760 { /* previous session */
767 if (!ssl_get_new_session(s,1))
774 if ((i == 0) && (j != 0))
776 /* we need a cipher if we are not resuming a session */
777 al=SSL_AD_ILLEGAL_PARAMETER;
778 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_CIPHERS_SPECIFIED);
783 /* not enough data */
784 al=SSL_AD_DECODE_ERROR;
785 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_LENGTH_MISMATCH);
788 if ((i > 0) && (ssl_bytes_to_cipher_list(s,p,i,&(ciphers))
795 /* If it is a hit, check that the cipher is in the list */
796 if ((s->hit) && (i > 0))
799 id=s->session->cipher->id;
802 printf("client sent %d ciphers\n",sk_num(ciphers));
804 for (i=0; i<sk_SSL_CIPHER_num(ciphers); i++)
806 c=sk_SSL_CIPHER_value(ciphers,i);
808 printf("client [%2d of %2d]:%s\n",
809 i,sk_num(ciphers),SSL_CIPHER_get_name(c));
819 if ((s->options & SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG) && (sk_SSL_CIPHER_num(ciphers) == 1))
821 /* Very bad for multi-threading.... */
822 s->session->cipher=sk_SSL_CIPHER_value(ciphers,
827 /* we need to have the cipher in the cipher
828 * list if we are asked to reuse it */
829 al=SSL_AD_ILLEGAL_PARAMETER;
830 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_REQUIRED_CIPHER_MISSING);
840 /* not enough data */
841 al=SSL_AD_DECODE_ERROR;
842 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_LENGTH_MISMATCH);
848 if (p[j] == 0) break;
855 al=SSL_AD_DECODE_ERROR;
856 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_COMPRESSION_SPECIFIED);
860 /* Worst case, we will use the NULL compression, but if we have other
861 * options, we will now look for them. We have i-1 compression
862 * algorithms from the client, starting at q. */
863 s->s3->tmp.new_compression=NULL;
864 if (s->ctx->comp_methods != NULL)
865 { /* See if we have a match */
868 nn=sk_SSL_COMP_num(s->ctx->comp_methods);
871 comp=sk_SSL_COMP_value(s->ctx->comp_methods,m);
884 s->s3->tmp.new_compression=comp;
889 /* TLS does not mind if there is extra stuff */
890 #if 0 /* SSL 3.0 does not mind either, so we should disable this test
891 * (was enabled in 0.9.6d through 0.9.6j and 0.9.7 through 0.9.7b,
892 * in earlier SSLeay/OpenSSL releases this test existed but was buggy) */
893 if (s->version == SSL3_VERSION)
897 /* wrong number of bytes,
898 * there could be more to follow */
899 al=SSL_AD_DECODE_ERROR;
900 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_LENGTH_MISMATCH);
906 /* Given s->session->ciphers and SSL_get_ciphers, we must
911 s->session->compress_meth=(comp == NULL)?0:comp->id;
912 if (s->session->ciphers != NULL)
913 sk_SSL_CIPHER_free(s->session->ciphers);
914 s->session->ciphers=ciphers;
917 al=SSL_AD_ILLEGAL_PARAMETER;
918 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_CIPHERS_PASSED);
922 c=ssl3_choose_cipher(s,s->session->ciphers,
927 al=SSL_AD_HANDSHAKE_FAILURE;
928 SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_SHARED_CIPHER);
931 s->s3->tmp.new_cipher=c;
935 /* Session-id reuse */
936 #ifdef REUSE_CIPHER_BUG
937 STACK_OF(SSL_CIPHER) *sk;
941 if (s->options & SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG)
943 sk=s->session->ciphers;
944 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
946 c=sk_SSL_CIPHER_value(sk,i);
947 if (c->algorithms & SSL_eNULL)
949 if (SSL_C_IS_EXPORT(c))
953 s->s3->tmp.new_cipher=nc;
955 s->s3->tmp.new_cipher=ec;
957 s->s3->tmp.new_cipher=s->session->cipher;
961 s->s3->tmp.new_cipher=s->session->cipher;
964 /* we now have the following setup.
966 * cipher_list - our prefered list of ciphers
967 * ciphers - the clients prefered list of ciphers
968 * compression - basically ignored right now
969 * ssl version is set - sslv3
970 * s->session - The ssl session has been setup.
971 * s->hit - session reuse flag
972 * s->tmp.new_cipher - the new cipher to use.
979 ssl3_send_alert(s,SSL3_AL_FATAL,al);
982 if (ciphers != NULL) sk_SSL_CIPHER_free(ciphers);
986 static int ssl3_send_server_hello(SSL *s)
991 unsigned long l,Time;
993 if (s->state == SSL3_ST_SW_SRVR_HELLO_A)
995 buf=(unsigned char *)s->init_buf->data;
996 p=s->s3->server_random;
997 Time=time(NULL); /* Time */
999 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4);
1000 /* Do the message type and length last */
1003 *(p++)=s->version>>8;
1004 *(p++)=s->version&0xff;
1007 memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
1008 p+=SSL3_RANDOM_SIZE;
1010 /* now in theory we have 3 options to sending back the
1011 * session id. If it is a re-use, we send back the
1012 * old session-id, if it is a new session, we send
1013 * back the new session-id or we send back a 0 length
1014 * session-id if we want it to be single use.
1015 * Currently I will not implement the '0' length session-id
1016 * 12-Jan-98 - I'll now support the '0' length stuff.
1018 if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER))
1019 s->session->session_id_length=0;
1021 sl=s->session->session_id_length;
1022 if (sl > (int)sizeof(s->session->session_id))
1024 SSLerr(SSL_F_SSL3_SEND_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
1028 memcpy(p,s->session->session_id,sl);
1031 /* put the cipher */
1032 i=ssl3_put_cipher_by_char(s->s3->tmp.new_cipher,p);
1035 /* put the compression method */
1036 if (s->s3->tmp.new_compression == NULL)
1039 *(p++)=s->s3->tmp.new_compression->id;
1044 *(d++)=SSL3_MT_SERVER_HELLO;
1047 s->state=SSL3_ST_CW_CLNT_HELLO_B;
1048 /* number of bytes to write */
1053 /* SSL3_ST_CW_CLNT_HELLO_B */
1054 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1057 static int ssl3_send_server_done(SSL *s)
1061 if (s->state == SSL3_ST_SW_SRVR_DONE_A)
1063 p=(unsigned char *)s->init_buf->data;
1066 *(p++)=SSL3_MT_SERVER_DONE;
1071 s->state=SSL3_ST_SW_SRVR_DONE_B;
1072 /* number of bytes to write */
1077 /* SSL3_ST_CW_CLNT_HELLO_B */
1078 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1081 static int ssl3_send_server_key_exchange(SSL *s)
1083 #ifndef OPENSSL_NO_RSA
1087 unsigned char md_buf[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1090 #ifndef OPENSSL_NO_DH
1093 #ifndef OPENSSL_NO_ECDH
1094 EC_KEY *ecdh=NULL, *ecdhp;
1095 unsigned char *encodedPoint = NULL;
1098 BN_CTX *bn_ctx = NULL;
1101 unsigned char *p,*d;
1111 EVP_MD_CTX_init(&md_ctx);
1112 if (s->state == SSL3_ST_SW_KEY_EXCH_A)
1114 type=s->s3->tmp.new_cipher->algorithms & SSL_MKEY_MASK;
1119 r[0]=r[1]=r[2]=r[3]=NULL;
1121 #ifndef OPENSSL_NO_RSA
1122 if (type & SSL_kRSA)
1125 if ((rsa == NULL) && (s->cert->rsa_tmp_cb != NULL))
1127 rsa=s->cert->rsa_tmp_cb(s,
1128 SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
1129 SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
1132 al=SSL_AD_HANDSHAKE_FAILURE;
1133 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_ERROR_GENERATING_TMP_RSA_KEY);
1141 al=SSL_AD_HANDSHAKE_FAILURE;
1142 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_RSA_KEY);
1147 s->s3->tmp.use_rsa_tmp=1;
1151 #ifndef OPENSSL_NO_DH
1152 if (type & SSL_kEDH)
1155 if ((dhp == NULL) && (s->cert->dh_tmp_cb != NULL))
1156 dhp=s->cert->dh_tmp_cb(s,
1157 SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
1158 SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
1161 al=SSL_AD_HANDSHAKE_FAILURE;
1162 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY);
1166 if (s->s3->tmp.dh != NULL)
1169 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1173 if ((dh=DHparams_dup(dhp)) == NULL)
1175 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
1180 if ((dhp->pub_key == NULL ||
1181 dhp->priv_key == NULL ||
1182 (s->options & SSL_OP_SINGLE_DH_USE)))
1184 if(!DH_generate_key(dh))
1186 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,
1193 dh->pub_key=BN_dup(dhp->pub_key);
1194 dh->priv_key=BN_dup(dhp->priv_key);
1195 if ((dh->pub_key == NULL) ||
1196 (dh->priv_key == NULL))
1198 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
1208 #ifndef OPENSSL_NO_ECDH
1209 if (type & SSL_kECDHE)
1211 ecdhp=cert->ecdh_tmp;
1212 if ((ecdhp == NULL) && (s->cert->ecdh_tmp_cb != NULL))
1214 ecdhp=s->cert->ecdh_tmp_cb(s,
1215 SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
1216 SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
1220 al=SSL_AD_HANDSHAKE_FAILURE;
1221 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_ECDH_KEY);
1225 if (s->s3->tmp.ecdh != NULL)
1227 EC_KEY_free(s->s3->tmp.ecdh);
1228 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
1232 /* Duplicate the ECDH structure. */
1235 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1238 if (!EC_KEY_up_ref(ecdhp))
1240 SSLerr(SSL_F_SSL3_CTRL,ERR_R_ECDH_LIB);
1245 s->s3->tmp.ecdh=ecdh;
1246 if ((ecdh->pub_key == NULL) ||
1247 (ecdh->priv_key == NULL) ||
1248 (s->options & SSL_OP_SINGLE_ECDH_USE))
1250 if(!EC_KEY_generate_key(ecdh))
1252 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1257 if ((ecdh->group == NULL) ||
1258 (ecdh->pub_key == NULL) ||
1259 (ecdh->priv_key == NULL))
1261 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1265 if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
1266 (EC_GROUP_get_degree(ecdh->group) > 163))
1268 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
1272 /* XXX: For now, we only support ephemeral ECDH
1273 * keys over named (not generic) curves. For
1274 * supported named curves, curve_id is non-zero.
1277 nid2curve_id(EC_GROUP_get_nid(ecdh->group)))
1280 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNSUPPORTED_ELLIPTIC_CURVE);
1284 /* Encode the public key.
1285 * First check the size of encoding and
1286 * allocate memory accordingly.
1288 encodedlen = EC_POINT_point2oct(ecdh->group,
1290 POINT_CONVERSION_UNCOMPRESSED,
1293 encodedPoint = (unsigned char *)
1294 OPENSSL_malloc(encodedlen*sizeof(unsigned char));
1295 bn_ctx = BN_CTX_new();
1296 if ((encodedPoint == NULL) || (bn_ctx == NULL))
1298 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1303 encodedlen = EC_POINT_point2oct(ecdh->group,
1305 POINT_CONVERSION_UNCOMPRESSED,
1306 encodedPoint, encodedlen, bn_ctx);
1308 if (encodedlen == 0)
1310 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
1314 BN_CTX_free(bn_ctx); bn_ctx=NULL;
1316 /* XXX: For now, we only support named (not
1317 * generic) curves in ECDH ephemeral key exchanges.
1318 * In this situation, we need three additional bytes
1319 * to encode the entire ServerECDHParams
1324 /* We'll generate the serverKeyExchange message
1325 * explicitly so we can set these to NULLs
1332 #endif /* !OPENSSL_NO_ECDH */
1334 al=SSL_AD_HANDSHAKE_FAILURE;
1335 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1338 for (i=0; r[i] != NULL; i++)
1340 nr[i]=BN_num_bytes(r[i]);
1344 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
1346 if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher))
1349 al=SSL_AD_DECODE_ERROR;
1352 kn=EVP_PKEY_size(pkey);
1360 if (!BUF_MEM_grow_clean(buf,n+4+kn))
1362 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_BUF);
1365 d=(unsigned char *)s->init_buf->data;
1368 for (i=0; r[i] != NULL; i++)
1375 #ifndef OPENSSL_NO_ECDH
1376 if (type & SSL_kECDHE)
1378 /* XXX: For now, we only support named (not generic) curves.
1379 * In this situation, the serverKeyExchange message has:
1380 * [1 byte CurveType], [1 byte CurveName]
1381 * [1 byte length of encoded point], followed by
1382 * the actual encoded point itself
1384 *p = NAMED_CURVE_TYPE;
1390 memcpy((unsigned char*)p,
1391 (unsigned char *)encodedPoint,
1393 OPENSSL_free(encodedPoint);
1401 /* n is the length of the params, they start at &(d[4])
1402 * and p points to the space at the end. */
1403 #ifndef OPENSSL_NO_RSA
1404 if (pkey->type == EVP_PKEY_RSA)
1408 for (num=2; num > 0; num--)
1410 EVP_DigestInit_ex(&md_ctx,(num == 2)
1411 ?s->ctx->md5:s->ctx->sha1, NULL);
1412 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1413 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1414 EVP_DigestUpdate(&md_ctx,&(d[4]),n);
1415 EVP_DigestFinal_ex(&md_ctx,q,
1416 (unsigned int *)&i);
1420 if (RSA_sign(NID_md5_sha1, md_buf, j,
1421 &(p[2]), &u, pkey->pkey.rsa) <= 0)
1423 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_RSA);
1431 #if !defined(OPENSSL_NO_DSA)
1432 if (pkey->type == EVP_PKEY_DSA)
1435 EVP_SignInit_ex(&md_ctx,EVP_dss1(), NULL);
1436 EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1437 EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1438 EVP_SignUpdate(&md_ctx,&(d[4]),n);
1439 if (!EVP_SignFinal(&md_ctx,&(p[2]),
1440 (unsigned int *)&i,pkey))
1442 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_DSA);
1450 #if !defined(OPENSSL_NO_ECDSA)
1451 if (pkey->type == EVP_PKEY_EC)
1453 /* let's do ECDSA */
1454 EVP_SignInit_ex(&md_ctx,EVP_ecdsa(), NULL);
1455 EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1456 EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1457 EVP_SignUpdate(&md_ctx,&(d[4]),n);
1458 if (!EVP_SignFinal(&md_ctx,&(p[2]),
1459 (unsigned int *)&i,pkey))
1461 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_ECDSA);
1470 /* Is this error check actually needed? */
1471 al=SSL_AD_HANDSHAKE_FAILURE;
1472 SSLerr(SSL_F_SSL3_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_PKEY_TYPE);
1477 *(d++)=SSL3_MT_SERVER_KEY_EXCHANGE;
1480 /* we should now have things packed up, so lets send
1486 s->state = SSL3_ST_SW_KEY_EXCH_B;
1487 EVP_MD_CTX_cleanup(&md_ctx);
1488 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1490 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1492 #ifndef OPENSSL_NO_ECDH
1493 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
1494 BN_CTX_free(bn_ctx);
1496 EVP_MD_CTX_cleanup(&md_ctx);
1500 static int ssl3_send_certificate_request(SSL *s)
1502 unsigned char *p,*d;
1504 STACK_OF(X509_NAME) *sk=NULL;
1508 if (s->state == SSL3_ST_SW_CERT_REQ_A)
1512 d=p=(unsigned char *)&(buf->data[4]);
1514 /* get the list of acceptable cert types */
1516 n=ssl3_get_req_cert_type(s,p);
1525 sk=SSL_get_client_CA_list(s);
1529 for (i=0; i<sk_X509_NAME_num(sk); i++)
1531 name=sk_X509_NAME_value(sk,i);
1532 j=i2d_X509_NAME(name,NULL);
1533 if (!BUF_MEM_grow_clean(buf,4+n+j+2))
1535 SSLerr(SSL_F_SSL3_SEND_CERTIFICATE_REQUEST,ERR_R_BUF_LIB);
1538 p=(unsigned char *)&(buf->data[4+n]);
1539 if (!(s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1542 i2d_X509_NAME(name,&p);
1549 i2d_X509_NAME(name,&p);
1550 j-=2; s2n(j,d); j+=2;
1556 /* else no CA names */
1557 p=(unsigned char *)&(buf->data[4+off]);
1560 d=(unsigned char *)buf->data;
1561 *(d++)=SSL3_MT_CERTIFICATE_REQUEST;
1564 /* we should now have things packed up, so lets send
1569 #ifdef NETSCAPE_HANG_BUG
1570 p=(unsigned char *)s->init_buf->data + s->init_num;
1573 *(p++)=SSL3_MT_SERVER_DONE;
1580 s->state = SSL3_ST_SW_CERT_REQ_B;
1583 /* SSL3_ST_SW_CERT_REQ_B */
1584 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1590 static const int KDF1_SHA1_len = 20;
1591 static void *KDF1_SHA1(const void *in, size_t inlen, void *out, size_t *outlen)
1593 #ifndef OPENSSL_NO_SHA
1594 if (*outlen < SHA_DIGEST_LENGTH)
1597 *outlen = SHA_DIGEST_LENGTH;
1598 return SHA1(in, inlen, out);
1604 static int ssl3_get_client_key_exchange(SSL *s)
1610 #ifndef OPENSSL_NO_RSA
1612 EVP_PKEY *pkey=NULL;
1614 #ifndef OPENSSL_NO_DH
1618 #ifndef OPENSSL_NO_KRB5
1620 #endif /* OPENSSL_NO_KRB5 */
1622 #ifndef OPENSSL_NO_ECDH
1623 EC_KEY *srvr_ecdh = NULL;
1624 EVP_PKEY *clnt_pub_pkey = NULL;
1625 EC_POINT *clnt_ecpoint = NULL;
1626 BN_CTX *bn_ctx = NULL;
1629 n=ssl3_get_message(s,
1630 SSL3_ST_SR_KEY_EXCH_A,
1631 SSL3_ST_SR_KEY_EXCH_B,
1632 SSL3_MT_CLIENT_KEY_EXCHANGE,
1636 if (!ok) return((int)n);
1637 p=(unsigned char *)s->init_msg;
1639 l=s->s3->tmp.new_cipher->algorithms;
1641 #ifndef OPENSSL_NO_RSA
1644 /* FIX THIS UP EAY EAY EAY EAY */
1645 if (s->s3->tmp.use_rsa_tmp)
1647 if ((s->cert != NULL) && (s->cert->rsa_tmp != NULL))
1648 rsa=s->cert->rsa_tmp;
1649 /* Don't do a callback because rsa_tmp should
1650 * be sent already */
1653 al=SSL_AD_HANDSHAKE_FAILURE;
1654 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_TMP_RSA_PKEY);
1661 pkey=s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey;
1662 if ( (pkey == NULL) ||
1663 (pkey->type != EVP_PKEY_RSA) ||
1664 (pkey->pkey.rsa == NULL))
1666 al=SSL_AD_HANDSHAKE_FAILURE;
1667 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_RSA_CERTIFICATE);
1674 if (s->version > SSL3_VERSION)
1679 if (!(s->options & SSL_OP_TLS_D5_BUG))
1681 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_TLS_RSA_ENCRYPTED_VALUE_LENGTH_IS_WRONG);
1691 i=RSA_private_decrypt((int)n,p,p,rsa,RSA_PKCS1_PADDING);
1695 if (i != SSL_MAX_MASTER_KEY_LENGTH)
1697 al=SSL_AD_DECODE_ERROR;
1698 /* SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); */
1701 if ((al == -1) && !((p[0] == (s->client_version>>8)) && (p[1] == (s->client_version & 0xff))))
1703 /* The premaster secret must contain the same version number as the
1704 * ClientHello to detect version rollback attacks (strangely, the
1705 * protocol does not offer such protection for DH ciphersuites).
1706 * However, buggy clients exist that send the negotiated protocol
1707 * version instead if the server does not support the requested
1709 * If SSL_OP_TLS_ROLLBACK_BUG is set, tolerate such clients. */
1710 if (!((s->options & SSL_OP_TLS_ROLLBACK_BUG) &&
1711 (p[0] == (s->version>>8)) && (p[1] == (s->version & 0xff))))
1713 al=SSL_AD_DECODE_ERROR;
1714 /* SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BAD_PROTOCOL_VERSION_NUMBER); */
1716 /* The Klima-Pokorny-Rosa extension of Bleichenbacher's attack
1717 * (http://eprint.iacr.org/2003/052/) exploits the version
1718 * number check as a "bad version oracle" -- an alert would
1719 * reveal that the plaintext corresponding to some ciphertext
1720 * made up by the adversary is properly formatted except
1721 * that the version number is wrong. To avoid such attacks,
1722 * we should treat this just like any other decryption error. */
1728 /* Some decryption failure -- use random value instead as countermeasure
1729 * against Bleichenbacher's attack on PKCS #1 v1.5 RSA padding
1730 * (see RFC 2246, section 7.4.7.1). */
1732 i = SSL_MAX_MASTER_KEY_LENGTH;
1733 p[0] = s->client_version >> 8;
1734 p[1] = s->client_version & 0xff;
1735 RAND_pseudo_bytes(p+2, i-2); /* should be RAND_bytes, but we cannot work around a failure */
1738 s->session->master_key_length=
1739 s->method->ssl3_enc->generate_master_secret(s,
1740 s->session->master_key,
1742 OPENSSL_cleanse(p,i);
1746 #ifndef OPENSSL_NO_DH
1747 if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1752 if (!(s->options & SSL_OP_SSLEAY_080_CLIENT_DH_BUG))
1754 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_DH_PUBLIC_VALUE_LENGTH_IS_WRONG);
1764 if (n == 0L) /* the parameters are in the cert */
1766 al=SSL_AD_HANDSHAKE_FAILURE;
1767 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_DECODE_DH_CERTS);
1772 if (s->s3->tmp.dh == NULL)
1774 al=SSL_AD_HANDSHAKE_FAILURE;
1775 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY);
1779 dh_srvr=s->s3->tmp.dh;
1782 pub=BN_bin2bn(p,i,NULL);
1785 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_BN_LIB);
1789 i=DH_compute_key(p,pub,dh_srvr);
1793 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1797 DH_free(s->s3->tmp.dh);
1802 s->session->master_key_length=
1803 s->method->ssl3_enc->generate_master_secret(s,
1804 s->session->master_key,p,i);
1805 OPENSSL_cleanse(p,i);
1809 #ifndef OPENSSL_NO_KRB5
1812 krb5_error_code krb5rc;
1813 krb5_data enc_ticket;
1814 krb5_data authenticator;
1816 KSSL_CTX *kssl_ctx = s->kssl_ctx;
1817 EVP_CIPHER_CTX ciph_ctx;
1818 EVP_CIPHER *enc = NULL;
1819 unsigned char iv[EVP_MAX_IV_LENGTH];
1820 unsigned char pms[SSL_MAX_MASTER_KEY_LENGTH
1821 + EVP_MAX_BLOCK_LENGTH];
1823 krb5_timestamp authtime = 0;
1824 krb5_ticket_times ttimes;
1826 EVP_CIPHER_CTX_init(&ciph_ctx);
1828 if (!kssl_ctx) kssl_ctx = kssl_ctx_new();
1831 enc_ticket.length = i;
1832 enc_ticket.data = (char *)p;
1833 p+=enc_ticket.length;
1836 authenticator.length = i;
1837 authenticator.data = (char *)p;
1838 p+=authenticator.length;
1842 enc_pms.data = (char *)p;
1845 /* Note that the length is checked again below,
1848 if(enc_pms.length > sizeof pms)
1850 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1851 SSL_R_DATA_LENGTH_TOO_LONG);
1855 if (n != (long)(enc_ticket.length + authenticator.length +
1856 enc_pms.length + 6))
1858 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1859 SSL_R_DATA_LENGTH_TOO_LONG);
1863 if ((krb5rc = kssl_sget_tkt(kssl_ctx, &enc_ticket, &ttimes,
1867 printf("kssl_sget_tkt rtn %d [%d]\n",
1868 krb5rc, kssl_err.reason);
1870 printf("kssl_err text= %s\n", kssl_err.text);
1871 #endif /* KSSL_DEBUG */
1872 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1877 /* Note: no authenticator is not considered an error,
1878 ** but will return authtime == 0.
1880 if ((krb5rc = kssl_check_authent(kssl_ctx, &authenticator,
1881 &authtime, &kssl_err)) != 0)
1884 printf("kssl_check_authent rtn %d [%d]\n",
1885 krb5rc, kssl_err.reason);
1887 printf("kssl_err text= %s\n", kssl_err.text);
1888 #endif /* KSSL_DEBUG */
1889 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,
1894 if ((krb5rc = kssl_validate_times(authtime, &ttimes)) != 0)
1896 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, krb5rc);
1901 kssl_ctx_show(kssl_ctx);
1902 #endif /* KSSL_DEBUG */
1904 enc = kssl_map_enc(kssl_ctx->enctype);
1908 memset(iv, 0, sizeof iv); /* per RFC 1510 */
1910 if (!EVP_DecryptInit_ex(&ciph_ctx,enc,NULL,kssl_ctx->key,iv))
1912 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1913 SSL_R_DECRYPTION_FAILED);
1916 if (!EVP_DecryptUpdate(&ciph_ctx, pms,&outl,
1917 (unsigned char *)enc_pms.data, enc_pms.length))
1919 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1920 SSL_R_DECRYPTION_FAILED);
1923 if (outl > SSL_MAX_MASTER_KEY_LENGTH)
1925 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1926 SSL_R_DATA_LENGTH_TOO_LONG);
1929 if (!EVP_DecryptFinal_ex(&ciph_ctx,&(pms[outl]),&padl))
1931 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1932 SSL_R_DECRYPTION_FAILED);
1936 if (outl > SSL_MAX_MASTER_KEY_LENGTH)
1938 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1939 SSL_R_DATA_LENGTH_TOO_LONG);
1942 EVP_CIPHER_CTX_cleanup(&ciph_ctx);
1944 s->session->master_key_length=
1945 s->method->ssl3_enc->generate_master_secret(s,
1946 s->session->master_key, pms, outl);
1948 if (kssl_ctx->client_princ)
1950 int len = strlen(kssl_ctx->client_princ);
1951 if ( len < SSL_MAX_KRB5_PRINCIPAL_LENGTH )
1953 s->session->krb5_client_princ_len = len;
1954 memcpy(s->session->krb5_client_princ,kssl_ctx->client_princ,len);
1959 /* Was doing kssl_ctx_free() here,
1960 ** but it caused problems for apache.
1961 ** kssl_ctx = kssl_ctx_free(kssl_ctx);
1962 ** if (s->kssl_ctx) s->kssl_ctx = NULL;
1966 #endif /* OPENSSL_NO_KRB5 */
1968 #ifndef OPENSSL_NO_ECDH
1969 if ((l & SSL_kECDH) || (l & SSL_kECDHE))
1974 /* initialize structures for server's ECDH key pair */
1975 if ((srvr_ecdh = EC_KEY_new()) == NULL)
1977 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
1978 ERR_R_MALLOC_FAILURE);
1982 /* Let's get server private key and group information */
1985 /* use the certificate */
1986 srvr_ecdh->group = s->cert->key->privatekey-> \
1988 srvr_ecdh->priv_key = s->cert->key->privatekey-> \
1989 pkey.eckey->priv_key;
1993 /* use the ephermeral values we saved when
1994 * generating the ServerKeyExchange msg.
1996 srvr_ecdh->group = s->s3->tmp.ecdh->group;
1997 srvr_ecdh->priv_key = s->s3->tmp.ecdh->priv_key;
2000 /* Let's get client's public key */
2001 if ((clnt_ecpoint = EC_POINT_new(srvr_ecdh->group))
2004 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2005 ERR_R_MALLOC_FAILURE);
2011 /* Client Publickey was in Client Certificate */
2015 al=SSL_AD_HANDSHAKE_FAILURE;
2016 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,SSL_R_MISSING_TMP_ECDH_KEY);
2019 if (((clnt_pub_pkey=X509_get_pubkey(s->session->peer))
2021 (clnt_pub_pkey->type != EVP_PKEY_EC))
2023 /* XXX: For now, we do not support client
2024 * authentication using ECDH certificates
2025 * so this branch (n == 0L) of the code is
2026 * never executed. When that support is
2027 * added, we ought to ensure the key
2028 * received in the certificate is
2029 * authorized for key agreement.
2030 * ECDH_compute_key implicitly checks that
2031 * the two ECDH shares are for the same
2034 al=SSL_AD_HANDSHAKE_FAILURE;
2035 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2036 SSL_R_UNABLE_TO_DECODE_ECDH_CERTS);
2040 EC_POINT_copy(clnt_ecpoint,
2041 clnt_pub_pkey->pkey.eckey->pub_key);
2042 ret = 2; /* Skip certificate verify processing */
2046 /* Get client's public key from encoded point
2047 * in the ClientKeyExchange message.
2049 if ((bn_ctx = BN_CTX_new()) == NULL)
2051 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2052 ERR_R_MALLOC_FAILURE);
2056 /* Get encoded point length */
2059 if (EC_POINT_oct2point(srvr_ecdh->group,
2060 clnt_ecpoint, p, i, bn_ctx) == 0)
2062 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2066 /* p is pointing to somewhere in the buffer
2067 * currently, so set it to the start
2069 p=(unsigned char *)s->init_buf->data;
2072 /* Compute the shared pre-master secret */
2073 field_size = EC_GROUP_get_degree(srvr_ecdh->group);
2074 if (field_size <= 0)
2076 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2080 /* If field size is not more than 24 octets, then use SHA-1 hash of result;
2081 * otherwise, use result (see section 4.8 of draft-ietf-tls-ecc-03.txt;
2082 * this is new with this version of the Internet Draft).
2084 if (field_size <= 24 * 8)
2085 i = ECDH_compute_key(p, KDF1_SHA1_len, clnt_ecpoint, srvr_ecdh, KDF1_SHA1);
2087 i = ECDH_compute_key(p, (field_size+7)/8, clnt_ecpoint, srvr_ecdh, NULL);
2090 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2095 EVP_PKEY_free(clnt_pub_pkey);
2096 EC_POINT_free(clnt_ecpoint);
2097 if (srvr_ecdh != NULL)
2099 srvr_ecdh->priv_key = NULL;
2100 srvr_ecdh->group = NULL;
2101 EC_KEY_free(srvr_ecdh);
2103 BN_CTX_free(bn_ctx);
2105 /* Compute the master secret */
2106 s->session->master_key_length = s->method->ssl3_enc-> \
2107 generate_master_secret(s, s->session->master_key, p, i);
2109 OPENSSL_cleanse(p, i);
2115 al=SSL_AD_HANDSHAKE_FAILURE;
2116 SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE,
2117 SSL_R_UNKNOWN_CIPHER_TYPE);
2123 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2124 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_ECDH)
2127 #ifndef OPENSSL_NO_ECDH
2128 EVP_PKEY_free(clnt_pub_pkey);
2129 EC_POINT_free(clnt_ecpoint);
2130 if (srvr_ecdh != NULL)
2132 srvr_ecdh->priv_key = NULL;
2133 srvr_ecdh->group = NULL;
2134 EC_KEY_free(srvr_ecdh);
2136 BN_CTX_free(bn_ctx);
2141 static int ssl3_get_cert_verify(SSL *s)
2143 EVP_PKEY *pkey=NULL;
2150 n=ssl3_get_message(s,
2151 SSL3_ST_SR_CERT_VRFY_A,
2152 SSL3_ST_SR_CERT_VRFY_B,
2157 if (!ok) return((int)n);
2159 if (s->session->peer != NULL)
2161 peer=s->session->peer;
2162 pkey=X509_get_pubkey(peer);
2163 type=X509_certificate_type(peer,pkey);
2171 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_VERIFY)
2173 s->s3->tmp.reuse_message=1;
2174 if ((peer != NULL) && (type | EVP_PKT_SIGN))
2176 al=SSL_AD_UNEXPECTED_MESSAGE;
2177 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_MISSING_VERIFY_MESSAGE);
2186 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_NO_CLIENT_CERT_RECEIVED);
2187 al=SSL_AD_UNEXPECTED_MESSAGE;
2191 if (!(type & EVP_PKT_SIGN))
2193 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE);
2194 al=SSL_AD_ILLEGAL_PARAMETER;
2198 if (s->s3->change_cipher_spec)
2200 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_CCS_RECEIVED_EARLY);
2201 al=SSL_AD_UNEXPECTED_MESSAGE;
2205 /* we now have a signature that we need to verify */
2206 p=(unsigned char *)s->init_msg;
2211 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_LENGTH_MISMATCH);
2212 al=SSL_AD_DECODE_ERROR;
2216 j=EVP_PKEY_size(pkey);
2217 if ((i > j) || (n > j) || (n <= 0))
2219 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_WRONG_SIGNATURE_SIZE);
2220 al=SSL_AD_DECODE_ERROR;
2224 #ifndef OPENSSL_NO_RSA
2225 if (pkey->type == EVP_PKEY_RSA)
2227 i=RSA_verify(NID_md5_sha1, s->s3->tmp.cert_verify_md,
2228 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, p, i,
2232 al=SSL_AD_DECRYPT_ERROR;
2233 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_DECRYPT);
2238 al=SSL_AD_DECRYPT_ERROR;
2239 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_RSA_SIGNATURE);
2245 #ifndef OPENSSL_NO_DSA
2246 if (pkey->type == EVP_PKEY_DSA)
2248 j=DSA_verify(pkey->save_type,
2249 &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]),
2250 SHA_DIGEST_LENGTH,p,i,pkey->pkey.dsa);
2254 al=SSL_AD_DECRYPT_ERROR;
2255 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,SSL_R_BAD_DSA_SIGNATURE);
2261 #ifndef OPENSSL_NO_ECDSA
2262 if (pkey->type == EVP_PKEY_EC)
2264 j=ECDSA_verify(pkey->save_type,
2265 &(s->s3->tmp.cert_verify_md[MD5_DIGEST_LENGTH]),
2266 SHA_DIGEST_LENGTH,p,i,pkey->pkey.eckey);
2270 al=SSL_AD_DECRYPT_ERROR;
2271 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,
2272 SSL_R_BAD_ECDSA_SIGNATURE);
2279 SSLerr(SSL_F_SSL3_GET_CERT_VERIFY,ERR_R_INTERNAL_ERROR);
2280 al=SSL_AD_UNSUPPORTED_CERTIFICATE;
2289 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2292 EVP_PKEY_free(pkey);
2296 static int ssl3_get_client_certificate(SSL *s)
2298 int i,ok,al,ret= -1;
2300 unsigned long l,nc,llen,n;
2301 const unsigned char *p,*q;
2303 STACK_OF(X509) *sk=NULL;
2305 n=ssl3_get_message(s,
2312 if (!ok) return((int)n);
2314 if (s->s3->tmp.message_type == SSL3_MT_CLIENT_KEY_EXCHANGE)
2316 if ( (s->verify_mode & SSL_VERIFY_PEER) &&
2317 (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT))
2319 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
2320 al=SSL_AD_HANDSHAKE_FAILURE;
2323 /* If tls asked for a client cert, the client must return a 0 list */
2324 if ((s->version > SSL3_VERSION) && s->s3->tmp.cert_request)
2326 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_TLS_PEER_DID_NOT_RESPOND_WITH_CERTIFICATE_LIST);
2327 al=SSL_AD_UNEXPECTED_MESSAGE;
2330 s->s3->tmp.reuse_message=1;
2334 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
2336 al=SSL_AD_UNEXPECTED_MESSAGE;
2337 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_WRONG_MESSAGE_TYPE);
2340 p=d=(unsigned char *)s->init_msg;
2342 if ((sk=sk_X509_new_null()) == NULL)
2344 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
2351 al=SSL_AD_DECODE_ERROR;
2352 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
2355 for (nc=0; nc<llen; )
2358 if ((l+nc+3) > llen)
2360 al=SSL_AD_DECODE_ERROR;
2361 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
2366 x=d2i_X509(NULL,&p,l);
2369 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_ASN1_LIB);
2374 al=SSL_AD_DECODE_ERROR;
2375 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
2378 if (!sk_X509_push(sk,x))
2380 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,ERR_R_MALLOC_FAILURE);
2387 if (sk_X509_num(sk) <= 0)
2389 /* TLS does not mind 0 certs returned */
2390 if (s->version == SSL3_VERSION)
2392 al=SSL_AD_HANDSHAKE_FAILURE;
2393 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_NO_CERTIFICATES_RETURNED);
2396 /* Fail for TLS only if we required a certificate */
2397 else if ((s->verify_mode & SSL_VERIFY_PEER) &&
2398 (s->verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT))
2400 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_PEER_DID_NOT_RETURN_A_CERTIFICATE);
2401 al=SSL_AD_HANDSHAKE_FAILURE;
2407 i=ssl_verify_cert_chain(s,sk);
2410 al=ssl_verify_alarm_type(s->verify_result);
2411 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE,SSL_R_NO_CERTIFICATE_RETURNED);
2416 if (s->session->peer != NULL) /* This should not be needed */
2417 X509_free(s->session->peer);
2418 s->session->peer=sk_X509_shift(sk);
2419 s->session->verify_result = s->verify_result;
2421 /* With the current implementation, sess_cert will always be NULL
2422 * when we arrive here. */
2423 if (s->session->sess_cert == NULL)
2425 s->session->sess_cert = ssl_sess_cert_new();
2426 if (s->session->sess_cert == NULL)
2428 SSLerr(SSL_F_SSL3_GET_CLIENT_CERTIFICATE, ERR_R_MALLOC_FAILURE);
2432 if (s->session->sess_cert->cert_chain != NULL)
2433 sk_X509_pop_free(s->session->sess_cert->cert_chain, X509_free);
2434 s->session->sess_cert->cert_chain=sk;
2435 /* Inconsistency alert: cert_chain does *not* include the
2436 * peer's own certificate, while we do include it in s3_clnt.c */
2444 ssl3_send_alert(s,SSL3_AL_FATAL,al);
2447 if (x != NULL) X509_free(x);
2448 if (sk != NULL) sk_X509_pop_free(sk,X509_free);
2452 int ssl3_send_server_certificate(SSL *s)
2457 if (s->state == SSL3_ST_SW_CERT_A)
2459 x=ssl_get_server_send_cert(s);
2461 /* VRS: allow null cert if auth == KRB5 */
2462 (s->s3->tmp.new_cipher->algorithms
2463 & (SSL_MKEY_MASK|SSL_AUTH_MASK))
2464 != (SSL_aKRB5|SSL_kKRB5))
2466 SSLerr(SSL_F_SSL3_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
2470 l=ssl3_output_cert_chain(s,x);
2471 s->state=SSL3_ST_SW_CERT_B;
2476 /* SSL3_ST_SW_CERT_B */
2477 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
2481 #ifndef OPENSSL_NO_ECDH
2482 /* This is the complement of curve_id2nid in s3_clnt.c. */
2483 static int nid2curve_id(int nid)
2485 /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001)
2486 * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */
2488 case NID_sect163k1: /* sect163k1 (1) */
2490 case NID_sect163r1: /* sect163r1 (2) */
2492 case NID_sect163r2: /* sect163r2 (3) */
2494 case NID_sect193r1: /* sect193r1 (4) */
2496 case NID_sect193r2: /* sect193r2 (5) */
2498 case NID_sect233k1: /* sect233k1 (6) */
2500 case NID_sect233r1: /* sect233r1 (7) */
2502 case NID_sect239k1: /* sect239k1 (8) */
2504 case NID_sect283k1: /* sect283k1 (9) */
2506 case NID_sect283r1: /* sect283r1 (10) */
2508 case NID_sect409k1: /* sect409k1 (11) */
2510 case NID_sect409r1: /* sect409r1 (12) */
2512 case NID_sect571k1: /* sect571k1 (13) */
2514 case NID_sect571r1: /* sect571r1 (14) */
2516 case NID_secp160k1: /* secp160k1 (15) */
2518 case NID_secp160r1: /* secp160r1 (16) */
2520 case NID_secp160r2: /* secp160r2 (17) */
2522 case NID_secp192k1: /* secp192k1 (18) */
2524 case NID_X9_62_prime192v1: /* secp192r1 (19) */
2526 case NID_secp224k1: /* secp224k1 (20) */
2528 case NID_secp224r1: /* secp224r1 (21) */
2530 case NID_secp256k1: /* secp256k1 (22) */
2532 case NID_X9_62_prime256v1: /* secp256r1 (23) */
2534 case NID_secp384r1: /* secp384r1 (24) */
2536 case NID_secp521r1: /* secp521r1 (25) */