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.]
60 #include <openssl/buffer.h>
61 #include <openssl/rand.h>
62 #include <openssl/objects.h>
63 #include <openssl/evp.h>
67 /* SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
68 * SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
69 * SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,ERR_R_MALLOC_FAILURE);
70 * SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
71 * SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
72 * SSLerr(SSL_F_SSL3_GET_SERVER_DONE,ERR_R_MALLOC_FAILURE);
73 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
77 static SSL_METHOD *ssl3_get_client_method(int ver);
78 static int ssl3_client_hello(SSL *s);
79 static int ssl3_get_server_hello(SSL *s);
80 static int ssl3_get_certificate_request(SSL *s);
81 static int ca_dn_cmp(X509_NAME **a,X509_NAME **b);
82 static int ssl3_get_server_done(SSL *s);
83 static int ssl3_send_client_verify(SSL *s);
84 static int ssl3_send_client_certificate(SSL *s);
85 static int ssl3_send_client_key_exchange(SSL *s);
86 static int ssl3_get_key_exchange(SSL *s);
87 static int ssl3_get_server_certificate(SSL *s);
88 static int ssl3_check_cert_and_algorithm(SSL *s);
90 static SSL_METHOD *ssl3_get_client_method();
91 static int ssl3_client_hello();
92 static int ssl3_get_server_hello();
93 static int ssl3_get_certificate_request();
94 static int ca_dn_cmp();
95 static int ssl3_get_server_done();
96 static int ssl3_send_client_verify();
97 static int ssl3_send_client_certificate();
98 static int ssl3_send_client_key_exchange();
99 static int ssl3_get_key_exchange();
100 static int ssl3_get_server_certificate();
101 static int ssl3_check_cert_and_algorithm();
104 static SSL_METHOD *ssl3_get_client_method(int ver)
106 if (ver == SSL3_VERSION)
107 return(SSLv3_client_method());
112 SSL_METHOD *SSLv3_client_method(void)
115 static SSL_METHOD SSLv3_client_data;
120 memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(),
122 SSLv3_client_data.ssl_connect=ssl3_connect;
123 SSLv3_client_data.get_ssl_method=ssl3_get_client_method;
125 return(&SSLv3_client_data);
128 int ssl3_connect(SSL *s)
131 unsigned long Time=time(NULL),l;
135 int new_state,state,skip=0;;
137 RAND_seed(&Time,sizeof(Time));
141 if (s->info_callback != NULL)
143 else if (s->ctx->info_callback != NULL)
144 cb=s->ctx->info_callback;
146 if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
155 case SSL_ST_RENEGOTIATE:
157 s->state=SSL_ST_CONNECT;
158 s->ctx->stats.sess_connect_renegotiate++;
162 case SSL_ST_BEFORE|SSL_ST_CONNECT:
163 case SSL_ST_OK|SSL_ST_CONNECT:
166 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
168 if ((s->version & 0xff00 ) != 0x0300)
170 /* s->version=SSL3_VERSION; */
171 s->type=SSL_ST_CONNECT;
173 if (s->init_buf == NULL)
175 if ((buf=BUF_MEM_new()) == NULL)
180 if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
188 if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
190 /* setup buffing BIO */
191 if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; }
193 /* don't push the buffering BIO quite yet */
195 ssl3_init_finished_mac(s);
197 s->state=SSL3_ST_CW_CLNT_HELLO_A;
198 s->ctx->stats.sess_connect++;
202 case SSL3_ST_CW_CLNT_HELLO_A:
203 case SSL3_ST_CW_CLNT_HELLO_B:
206 ret=ssl3_client_hello(s);
207 if (ret <= 0) goto end;
208 s->state=SSL3_ST_CR_SRVR_HELLO_A;
211 /* turn on buffering for the next lot of output */
212 if (s->bbio != s->wbio)
213 s->wbio=BIO_push(s->bbio,s->wbio);
217 case SSL3_ST_CR_SRVR_HELLO_A:
218 case SSL3_ST_CR_SRVR_HELLO_B:
219 ret=ssl3_get_server_hello(s);
220 if (ret <= 0) goto end;
222 s->state=SSL3_ST_CR_FINISHED_A;
224 s->state=SSL3_ST_CR_CERT_A;
228 case SSL3_ST_CR_CERT_A:
229 case SSL3_ST_CR_CERT_B:
230 /* Check if it is anon DH */
231 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL))
233 ret=ssl3_get_server_certificate(s);
234 if (ret <= 0) goto end;
238 s->state=SSL3_ST_CR_KEY_EXCH_A;
242 case SSL3_ST_CR_KEY_EXCH_A:
243 case SSL3_ST_CR_KEY_EXCH_B:
244 ret=ssl3_get_key_exchange(s);
245 if (ret <= 0) goto end;
246 s->state=SSL3_ST_CR_CERT_REQ_A;
249 /* at this point we check that we have the
250 * required stuff from the server */
251 if (!ssl3_check_cert_and_algorithm(s))
258 case SSL3_ST_CR_CERT_REQ_A:
259 case SSL3_ST_CR_CERT_REQ_B:
260 ret=ssl3_get_certificate_request(s);
261 if (ret <= 0) goto end;
262 s->state=SSL3_ST_CR_SRVR_DONE_A;
266 case SSL3_ST_CR_SRVR_DONE_A:
267 case SSL3_ST_CR_SRVR_DONE_B:
268 ret=ssl3_get_server_done(s);
269 if (ret <= 0) goto end;
270 if (s->s3->tmp.cert_req)
271 s->state=SSL3_ST_CW_CERT_A;
273 s->state=SSL3_ST_CW_KEY_EXCH_A;
278 case SSL3_ST_CW_CERT_A:
279 case SSL3_ST_CW_CERT_B:
280 case SSL3_ST_CW_CERT_C:
281 ret=ssl3_send_client_certificate(s);
282 if (ret <= 0) goto end;
283 s->state=SSL3_ST_CW_KEY_EXCH_A;
287 case SSL3_ST_CW_KEY_EXCH_A:
288 case SSL3_ST_CW_KEY_EXCH_B:
289 ret=ssl3_send_client_key_exchange(s);
290 if (ret <= 0) goto end;
291 l=s->s3->tmp.new_cipher->algorithms;
292 /* EAY EAY EAY need to check for DH fix cert
294 /* For TLS, cert_req is set to 2, so a cert chain
295 * of nothing is sent, but no verify packet is sent */
296 if (s->s3->tmp.cert_req == 1)
298 s->state=SSL3_ST_CW_CERT_VRFY_A;
302 s->state=SSL3_ST_CW_CHANGE_A;
303 s->s3->change_cipher_spec=0;
309 case SSL3_ST_CW_CERT_VRFY_A:
310 case SSL3_ST_CW_CERT_VRFY_B:
311 ret=ssl3_send_client_verify(s);
312 if (ret <= 0) goto end;
313 s->state=SSL3_ST_CW_CHANGE_A;
315 s->s3->change_cipher_spec=0;
318 case SSL3_ST_CW_CHANGE_A:
319 case SSL3_ST_CW_CHANGE_B:
320 ret=ssl3_send_change_cipher_spec(s,
321 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
322 if (ret <= 0) goto end;
323 s->state=SSL3_ST_CW_FINISHED_A;
326 s->session->cipher=s->s3->tmp.new_cipher;
327 if (s->s3->tmp.new_compression == NULL)
328 s->session->compress_meth=0;
330 s->session->compress_meth=
331 s->s3->tmp.new_compression->id;
332 if (!s->method->ssl3_enc->setup_key_block(s))
338 if (!s->method->ssl3_enc->change_cipher_state(s,
339 SSL3_CHANGE_CIPHER_CLIENT_WRITE))
347 case SSL3_ST_CW_FINISHED_A:
348 case SSL3_ST_CW_FINISHED_B:
349 ret=ssl3_send_finished(s,
350 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
351 s->method->ssl3_enc->client_finished,
352 s->method->ssl3_enc->client_finished_len);
353 if (ret <= 0) goto end;
354 s->state=SSL3_ST_CW_FLUSH;
357 s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
360 s->s3->tmp.next_state=SSL_ST_OK;
361 if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
364 s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
365 s->s3->delay_buf_pop_ret=0;
370 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
375 case SSL3_ST_CR_FINISHED_A:
376 case SSL3_ST_CR_FINISHED_B:
378 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
379 SSL3_ST_CR_FINISHED_B);
380 if (ret <= 0) goto end;
383 s->state=SSL3_ST_CW_CHANGE_A;
389 case SSL3_ST_CW_FLUSH:
390 /* number of bytes to be flushed */
391 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL);
394 s->rwstate=SSL_WRITING;
395 num1=BIO_flush(s->wbio);
396 if (num1 <= 0) { ret= -1; goto end; }
397 s->rwstate=SSL_NOTHING;
400 s->state=s->s3->tmp.next_state;
404 /* clean a few things up */
405 ssl3_cleanup_key_block(s);
407 if (s->init_buf != NULL)
409 BUF_MEM_free(s->init_buf);
413 /* If we are not 'joining' the last two packets,
414 * remove the buffering now */
415 if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
416 ssl_free_wbio_buffer(s);
417 /* else do it later in ssl3_write */
422 ssl_update_cache(s,SSL_SESS_CACHE_CLIENT);
423 if (s->hit) s->ctx->stats.sess_hit++;
427 s->handshake_func=ssl3_connect;
428 s->ctx->stats.sess_connect_good++;
430 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1);
436 SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE);
442 /* did we do anything */
443 if (!s->s3->tmp.reuse_message && !skip)
447 if ((ret=BIO_flush(s->wbio)) <= 0)
451 if ((cb != NULL) && (s->state != state))
455 cb(s,SSL_CB_CONNECT_LOOP,1);
463 cb(s,SSL_CB_CONNECT_EXIT,ret);
469 static int ssl3_client_hello(SSL *s)
474 unsigned long Time,l;
477 buf=(unsigned char *)s->init_buf->data;
478 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
480 if ((s->session == NULL) ||
481 (s->session->ssl_version != s->version) ||
482 (s->session->not_resumable))
484 if (!ssl_get_new_session(s,0))
487 /* else use the pre-loaded session */
489 p=s->s3->client_random;
490 Time=time(NULL); /* Time */
492 RAND_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
494 /* Do the message type and length last */
497 *(p++)=s->version>>8;
498 *(p++)=s->version&0xff;
499 s->client_version=s->version;
502 memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
509 i=s->session->session_id_length;
513 memcpy(p,s->session->session_id,i);
517 /* Ciphers supported */
518 i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]));
521 SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
528 if (s->ctx->comp_methods == NULL)
531 j=sk_SSL_COMP_num(s->ctx->comp_methods);
535 comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
538 *(p++)=0; /* Add the NULL method */
542 *(d++)=SSL3_MT_CLIENT_HELLO;
545 s->state=SSL3_ST_CW_CLNT_HELLO_B;
546 /* number of bytes to write */
551 /* SSL3_ST_CW_CLNT_HELLO_B */
552 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
557 static int ssl3_get_server_hello(SSL *s)
559 STACK_OF(SSL_CIPHER) *sk;
567 n=ssl3_get_message(s,
568 SSL3_ST_CR_SRVR_HELLO_A,
569 SSL3_ST_CR_SRVR_HELLO_B,
570 SSL3_MT_SERVER_HELLO,
574 if (!ok) return((int)n);
575 d=p=(unsigned char *)s->init_buf->data;
577 if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff)))
579 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION);
580 s->version=(s->version&0xff00)|p[1];
581 al=SSL_AD_PROTOCOL_VERSION;
586 /* load the server hello data */
587 /* load the server random */
588 memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE);
591 /* get the session-id */
594 if ((j != 0) && (j != SSL3_SESSION_ID_SIZE))
596 /* SSLref returns 16 :-( */
597 if (j < SSL2_SSL_SESSION_ID_LENGTH)
599 al=SSL_AD_ILLEGAL_PARAMETER;
600 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_SHORT);
604 if (j != 0 && j == s->session->session_id_length
605 && memcmp(p,s->session->session_id,j) == 0)
607 if(s->sid_ctx_length != s->session->sid_ctx_length
608 || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length))
610 al=SSL_AD_ILLEGAL_PARAMETER;
611 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
616 else /* a miss or crap from the other end */
618 /* If we were trying for session-id reuse, make a new
619 * SSL_SESSION so we don't stuff up other people */
621 if (s->session->session_id_length > 0)
623 if (!ssl_get_new_session(s,0))
625 al=SSL_AD_INTERNAL_ERROR;
629 s->session->session_id_length=j;
630 memcpy(s->session->session_id,p,j); /* j could be 0 */
633 c=ssl_get_cipher_by_char(s,p);
637 al=SSL_AD_ILLEGAL_PARAMETER;
638 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED);
641 p+=ssl_put_cipher_by_char(s,NULL,NULL);
643 sk=ssl_get_ciphers_by_id(s);
644 i=sk_SSL_CIPHER_find(sk,c);
647 /* we did not say we would use this cipher */
648 al=SSL_AD_ILLEGAL_PARAMETER;
649 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED);
653 if (s->hit && (s->session->cipher != c))
656 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG))
658 al=SSL_AD_ILLEGAL_PARAMETER;
659 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED);
663 s->s3->tmp.new_cipher=c;
665 /* lets get the compression algorithm */
671 comp=ssl3_comp_find(s->ctx->comp_methods,j);
673 if ((j != 0) && (comp == NULL))
675 al=SSL_AD_ILLEGAL_PARAMETER;
676 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
681 s->s3->tmp.new_compression=comp;
686 /* wrong packet length */
687 al=SSL_AD_DECODE_ERROR;
688 SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH);
694 ssl3_send_alert(s,SSL3_AL_FATAL,al);
699 static int ssl3_get_server_certificate(SSL *s)
702 unsigned long n,nc,llen,l;
704 unsigned char *p,*d,*q;
705 STACK_OF(X509) *sk=NULL;
709 n=ssl3_get_message(s,
713 #if defined(MSDOS) && !defined(WIN32)
714 1024*30, /* 30k max cert list :-) */
716 1024*100, /* 100k max cert list :-) */
720 if (!ok) return((int)n);
722 if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE)
724 s->s3->tmp.reuse_message=1;
728 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE)
730 al=SSL_AD_UNEXPECTED_MESSAGE;
731 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE);
734 d=p=(unsigned char *)s->init_buf->data;
736 if ((sk=sk_X509_new_null()) == NULL)
738 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
745 al=SSL_AD_DECODE_ERROR;
746 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH);
749 for (nc=0; nc<llen; )
754 al=SSL_AD_DECODE_ERROR;
755 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
760 x=d2i_X509(NULL,&q,l);
763 al=SSL_AD_BAD_CERTIFICATE;
764 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB);
769 al=SSL_AD_DECODE_ERROR;
770 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH);
773 if (!sk_X509_push(sk,x))
775 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE);
783 i=ssl_verify_cert_chain(s,sk);
784 if ((s->verify_mode != SSL_VERIFY_NONE) && (!i))
786 al=ssl_verify_alarm_type(s->verify_result);
787 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED);
792 if (c == NULL) goto err;
794 if (s->session->cert) ssl_cert_free(s->session->cert);
798 x=sk_X509_value(sk,0);
801 pkey=X509_get_pubkey(x);
803 if ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))
807 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
811 i=ssl_cert_type(x,pkey);
816 SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
821 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
822 if (c->pkeys[i].x509 != NULL)
823 X509_free(c->pkeys[i].x509);
825 c->key= &(c->pkeys[i]);
827 if ((s->session != NULL) && (s->session->peer != NULL))
828 X509_free(s->session->peer);
829 CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
838 ssl3_send_alert(s,SSL3_AL_FATAL,al);
843 sk_X509_pop_free(sk,X509_free);
847 static int ssl3_get_key_exchange(SSL *s)
850 unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2];
853 unsigned char *param,*p;
854 int al,i,j,param_len,ok;
862 n=ssl3_get_message(s,
863 SSL3_ST_CR_KEY_EXCH_A,
864 SSL3_ST_CR_KEY_EXCH_B,
869 if (!ok) return((int)n);
871 if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE)
873 s->s3->tmp.reuse_message=1;
877 param=p=(unsigned char *)s->init_buf->data;
879 if (s->session->cert != NULL)
882 if (s->session->cert->rsa_tmp != NULL)
884 RSA_free(s->session->cert->rsa_tmp);
885 s->session->cert->rsa_tmp=NULL;
889 if (s->session->cert->dh_tmp)
891 DH_free(s->session->cert->dh_tmp);
892 s->session->cert->dh_tmp=NULL;
898 s->session->cert=ssl_cert_new();
902 alg=s->s3->tmp.new_cipher->algorithms;
907 if ((rsa=RSA_new()) == NULL)
909 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
916 al=SSL_AD_DECODE_ERROR;
917 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH);
920 if (!(rsa->n=BN_bin2bn(p,i,rsa->n)))
922 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
931 al=SSL_AD_DECODE_ERROR;
932 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH);
935 if (!(rsa->e=BN_bin2bn(p,i,rsa->e)))
937 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
943 /* s->session->cert->rsa_tmp=rsa;*/
944 /* this should be because we are using an export cipher */
946 pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_RSA_ENC].x509);
949 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
952 s->session->cert->rsa_tmp=rsa;
959 if ((dh=DH_new()) == NULL)
961 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB);
968 al=SSL_AD_DECODE_ERROR;
969 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH);
972 if (!(dh->p=BN_bin2bn(p,i,NULL)))
974 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
983 al=SSL_AD_DECODE_ERROR;
984 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH);
987 if (!(dh->g=BN_bin2bn(p,i,NULL)))
989 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
998 al=SSL_AD_DECODE_ERROR;
999 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH);
1002 if (!(dh->pub_key=BN_bin2bn(p,i,NULL)))
1004 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB);
1012 pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_RSA_ENC].x509);
1017 pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_DSA_SIGN].x509);
1019 /* else anonymous DH, so no certificate or pkey. */
1021 s->session->cert->dh_tmp=dh;
1024 else if ((alg & SSL_kDHr) || (alg & SSL_kDHd))
1026 al=SSL_AD_ILLEGAL_PARAMETER;
1027 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1033 al=SSL_AD_HANDSHAKE_FAILURE;
1034 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER);
1039 /* p points to the next byte, there are 'n' bytes left */
1042 /* if it was signed, check the signature */
1047 j=EVP_PKEY_size(pkey);
1049 if ((i != n) || (n > j) || (n <= 0))
1051 /* wrong packet length */
1052 al=SSL_AD_DECODE_ERROR;
1053 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH);
1058 if (pkey->type == EVP_PKEY_RSA)
1064 for (num=2; num > 0; num--)
1066 EVP_DigestInit(&md_ctx,(num == 2)
1067 ?s->ctx->md5:s->ctx->sha1);
1068 EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1069 EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1070 EVP_DigestUpdate(&md_ctx,param,param_len);
1071 EVP_DigestFinal(&md_ctx,q,(unsigned int *)&i);
1075 i=RSA_public_decrypt((int)n,p,p,pkey->pkey.rsa,
1079 al=SSL_AD_DECRYPT_ERROR;
1080 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT);
1083 if ((j != i) || (memcmp(p,md_buf,i) != 0))
1086 al=SSL_AD_DECRYPT_ERROR;
1087 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1094 if (pkey->type == EVP_PKEY_DSA)
1097 EVP_VerifyInit(&md_ctx,EVP_dss1());
1098 EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
1099 EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
1100 EVP_VerifyUpdate(&md_ctx,param,param_len);
1101 if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey))
1104 al=SSL_AD_DECRYPT_ERROR;
1105 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE);
1112 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
1118 /* still data left over */
1119 if (!(alg & SSL_aNULL))
1121 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
1126 al=SSL_AD_DECODE_ERROR;
1127 SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE);
1131 EVP_PKEY_free(pkey);
1134 ssl3_send_alert(s,SSL3_AL_FATAL,al);
1136 EVP_PKEY_free(pkey);
1140 static int ssl3_get_certificate_request(SSL *s)
1143 unsigned long n,nc,l;
1144 unsigned int llen,ctype_num,i;
1146 unsigned char *p,*d,*q;
1147 STACK_OF(X509_NAME) *ca_sk=NULL;
1149 n=ssl3_get_message(s,
1150 SSL3_ST_CR_CERT_REQ_A,
1151 SSL3_ST_CR_CERT_REQ_B,
1153 #if defined(MSDOS) && !defined(WIN32)
1154 1024*30, /* 30k max cert list :-) */
1156 1024*100, /* 100k max cert list :-) */
1160 if (!ok) return((int)n);
1162 s->s3->tmp.cert_req=0;
1164 if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE)
1166 s->s3->tmp.reuse_message=1;
1170 if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST)
1172 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1173 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE);
1177 /* TLS does not like anon-DH with client cert */
1178 if (s->version > SSL3_VERSION)
1180 l=s->s3->tmp.new_cipher->algorithms;
1183 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
1184 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER);
1189 d=p=(unsigned char *)s->init_buf->data;
1191 if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL)
1193 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1197 /* get the certificate types */
1199 if (ctype_num > SSL3_CT_NUMBER)
1200 ctype_num=SSL3_CT_NUMBER;
1201 for (i=0; i<ctype_num; i++)
1202 s->s3->tmp.ctype[i]= p[i];
1205 /* get the CA RDNs */
1210 out=fopen("/tmp/vsign.der","w");
1211 fwrite(p,1,llen,out);
1216 if ((llen+ctype_num+2+1) != n)
1218 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1219 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH);
1223 for (nc=0; nc<llen; )
1226 if ((l+nc+2) > llen)
1228 if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
1229 goto cont; /* netscape bugs */
1230 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1231 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG);
1237 if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL)
1239 /* If netscape tollerance is on, ignore errors */
1240 if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG)
1244 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1245 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB);
1252 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1253 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH);
1256 if (!sk_X509_NAME_push(ca_sk,xn))
1258 SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE);
1272 /* we should setup a certficate to return.... */
1273 s->s3->tmp.cert_req=1;
1274 s->s3->tmp.ctype_num=ctype_num;
1275 if (s->s3->tmp.ca_names != NULL)
1276 sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free);
1277 s->s3->tmp.ca_names=ca_sk;
1282 if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free);
1286 static int ca_dn_cmp(X509_NAME **a, X509_NAME **b)
1288 return(X509_NAME_cmp(*a,*b));
1291 static int ssl3_get_server_done(SSL *s)
1296 n=ssl3_get_message(s,
1297 SSL3_ST_CR_SRVR_DONE_A,
1298 SSL3_ST_CR_SRVR_DONE_B,
1299 SSL3_MT_SERVER_DONE,
1300 30, /* should be very small, like 0 :-) */
1303 if (!ok) return((int)n);
1306 /* should contain no data */
1307 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR);
1308 SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH);
1314 static int ssl3_send_client_key_exchange(SSL *s)
1316 unsigned char *p,*q,*d;
1319 EVP_PKEY *pkey=NULL;
1321 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
1323 d=(unsigned char *)s->init_buf->data;
1326 l=s->s3->tmp.new_cipher->algorithms;
1332 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
1334 if (s->session->cert->rsa_tmp != NULL)
1335 rsa=s->session->cert->rsa_tmp;
1338 pkey=X509_get_pubkey(s->session->cert->pkeys[SSL_PKEY_RSA_ENC].x509);
1339 if ((pkey == NULL) ||
1340 (pkey->type != EVP_PKEY_RSA) ||
1341 (pkey->pkey.rsa == NULL))
1343 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
1349 tmp_buf[0]=s->client_version>>8;
1350 tmp_buf[1]=s->client_version&0xff;
1351 RAND_bytes(&(tmp_buf[2]),SSL_MAX_MASTER_KEY_LENGTH-2);
1353 s->session->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
1356 /* Fix buf for TLS and beyond */
1357 if (s->version > SSL3_VERSION)
1359 n=RSA_public_encrypt(SSL_MAX_MASTER_KEY_LENGTH,
1360 tmp_buf,p,rsa,RSA_PKCS1_PADDING);
1362 if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
1363 if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
1367 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
1371 /* Fix buf for TLS and beyond */
1372 if (s->version > SSL3_VERSION)
1378 s->session->master_key_length=
1379 s->method->ssl3_enc->generate_master_secret(s,
1380 s->session->master_key,
1381 tmp_buf,SSL_MAX_MASTER_KEY_LENGTH);
1382 memset(tmp_buf,0,SSL_MAX_MASTER_KEY_LENGTH);
1387 if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1389 DH *dh_srvr,*dh_clnt;
1391 if (s->session->cert->dh_tmp != NULL)
1392 dh_srvr=s->session->cert->dh_tmp;
1395 /* we get them from the cert */
1396 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1397 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
1401 /* generate a new random key */
1402 if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
1404 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1407 if (!DH_generate_key(dh_clnt))
1409 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1413 /* use the 'p' output buffer for the DH key, but
1414 * make sure to clear it out afterwards */
1416 n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
1420 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
1424 /* generate master key from the result */
1425 s->session->master_key_length=
1426 s->method->ssl3_enc->generate_master_secret(s,
1427 s->session->master_key,p,n);
1431 /* send off the data */
1432 n=BN_num_bytes(dh_clnt->pub_key);
1434 BN_bn2bin(dh_clnt->pub_key,p);
1439 /* perhaps clean things up a bit EAY EAY EAY EAY*/
1444 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1445 SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_INTERNAL_ERROR);
1449 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
1452 s->state=SSL3_ST_CW_KEY_EXCH_B;
1453 /* number of bytes to write */
1458 /* SSL3_ST_CW_KEY_EXCH_B */
1459 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1464 static int ssl3_send_client_verify(SSL *s)
1466 unsigned char *p,*d;
1467 unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
1475 if (s->state == SSL3_ST_CW_CERT_VRFY_A)
1477 d=(unsigned char *)s->init_buf->data;
1479 pkey=s->cert->key->privatekey;
1481 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2),
1482 &(data[MD5_DIGEST_LENGTH]));
1485 if (pkey->type == EVP_PKEY_RSA)
1487 s->method->ssl3_enc->cert_verify_mac(s,
1488 &(s->s3->finish_dgst1),&(data[0]));
1489 i=RSA_private_encrypt(
1490 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1491 data,&(p[2]),pkey->pkey.rsa,
1495 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
1504 if (pkey->type == EVP_PKEY_DSA)
1506 if (!DSA_sign(pkey->save_type,
1507 &(data[MD5_DIGEST_LENGTH]),
1508 SHA_DIGEST_LENGTH,&(p[2]),
1509 (unsigned int *)&j,pkey->pkey.dsa))
1511 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
1520 SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,SSL_R_INTERNAL_ERROR);
1523 *(d++)=SSL3_MT_CERTIFICATE_VERIFY;
1526 s->init_num=(int)n+4;
1529 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1534 static int ssl3_send_client_certificate(SSL *s)
1537 EVP_PKEY *pkey=NULL;
1541 if (s->state == SSL3_ST_CW_CERT_A)
1543 if ((s->cert == NULL) ||
1544 (s->cert->key->x509 == NULL) ||
1545 (s->cert->key->privatekey == NULL))
1546 s->state=SSL3_ST_CW_CERT_B;
1548 s->state=SSL3_ST_CW_CERT_C;
1551 /* We need to get a client cert */
1552 if (s->state == SSL3_ST_CW_CERT_B)
1554 /* If we get an error, we need to
1555 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
1556 * We then get retied later */
1558 if (s->ctx->client_cert_cb != NULL)
1559 i=s->ctx->client_cert_cb(s,&(x509),&(pkey));
1562 s->rwstate=SSL_X509_LOOKUP;
1565 s->rwstate=SSL_NOTHING;
1566 if ((i == 1) && (pkey != NULL) && (x509 != NULL))
1568 s->state=SSL3_ST_CW_CERT_B;
1569 if ( !SSL_use_certificate(s,x509) ||
1570 !SSL_use_PrivateKey(s,pkey))
1576 SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
1579 if (x509 != NULL) X509_free(x509);
1580 if (pkey != NULL) EVP_PKEY_free(pkey);
1583 if (s->version == SSL3_VERSION)
1585 s->s3->tmp.cert_req=0;
1586 ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
1591 s->s3->tmp.cert_req=2;
1595 /* Ok, we have a cert */
1596 s->state=SSL3_ST_CW_CERT_C;
1599 if (s->state == SSL3_ST_CW_CERT_C)
1601 s->state=SSL3_ST_CW_CERT_D;
1602 l=ssl3_output_cert_chain(s,
1603 (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
1607 /* SSL3_ST_CW_CERT_D */
1608 return(ssl3_do_write(s,SSL3_RT_HANDSHAKE));
1611 #define has_bits(i,m) (((i)&(m)) == (m))
1613 static int ssl3_check_cert_and_algorithm(SSL *s)
1617 EVP_PKEY *pkey=NULL;
1626 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_INTERNAL_ERROR);
1630 algs=s->s3->tmp.new_cipher->algorithms;
1632 /* we don't have a certificate */
1633 if (algs & (SSL_aDH|SSL_aNULL))
1636 rsa=s->session->cert->rsa_tmp;
1637 dh=s->session->cert->dh_tmp;
1639 /* This is the passed certificate */
1642 pkey=X509_get_pubkey(c->pkeys[idx].x509);
1643 i=X509_certificate_type(c->pkeys[idx].x509,pkey);
1644 EVP_PKEY_free(pkey);
1647 /* Check that we have a certificate if we require one */
1648 if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN))
1650 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT);
1654 else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN))
1656 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT);
1661 if ((algs & SSL_kRSA) &&
1662 !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL)))
1664 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT);
1668 else if ((algs & SSL_kEDH) &&
1669 !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL)))
1671 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY);
1674 else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA))
1676 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT);
1680 else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA))
1682 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT);
1688 if (SSL_IS_EXPORT(algs) && !has_bits(i,EVP_PKT_EXP))
1691 if (algs & SSL_kRSA)
1694 || RSA_size(rsa) > SSL_EXPORT_PKEYLENGTH(algs))
1696 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY);
1703 if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
1706 || DH_size(dh) > SSL_EXPORT_PKEYLENGTH(algs))
1708 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY);
1715 SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
1721 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);