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-rw-r--r--src/lib/libssl/d1_clnt.c451
1 files changed, 415 insertions, 36 deletions
diff --git a/src/lib/libssl/d1_clnt.c b/src/lib/libssl/d1_clnt.c
index 49c6760d19..5bc9eb6603 100644
--- a/src/lib/libssl/d1_clnt.c
+++ b/src/lib/libssl/d1_clnt.c
@@ -4,7 +4,7 @@
4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005. 4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5 */ 5 */
6/* ==================================================================== 6/* ====================================================================
7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 7 * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
8 * 8 *
9 * Redistribution and use in source and binary forms, with or without 9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions 10 * modification, are permitted provided that the following conditions
@@ -115,22 +115,25 @@
115 115
116#include <stdio.h> 116#include <stdio.h>
117#include "ssl_locl.h" 117#include "ssl_locl.h"
118#ifndef OPENSSL_NO_KRB5
118#include "kssl_lcl.h" 119#include "kssl_lcl.h"
120#endif
119#include <openssl/buffer.h> 121#include <openssl/buffer.h>
120#include <openssl/rand.h> 122#include <openssl/rand.h>
121#include <openssl/objects.h> 123#include <openssl/objects.h>
122#include <openssl/evp.h> 124#include <openssl/evp.h>
123#include <openssl/md5.h> 125#include <openssl/md5.h>
126#include <openssl/bn.h>
124#ifndef OPENSSL_NO_DH 127#ifndef OPENSSL_NO_DH
125#include <openssl/dh.h> 128#include <openssl/dh.h>
126#endif 129#endif
127 130
128static SSL_METHOD *dtls1_get_client_method(int ver); 131static const SSL_METHOD *dtls1_get_client_method(int ver);
129static int dtls1_get_hello_verify(SSL *s); 132static int dtls1_get_hello_verify(SSL *s);
130 133
131static SSL_METHOD *dtls1_get_client_method(int ver) 134static const SSL_METHOD *dtls1_get_client_method(int ver)
132 { 135 {
133 if (ver == DTLS1_VERSION) 136 if (ver == DTLS1_VERSION || ver == DTLS1_BAD_VER)
134 return(DTLSv1_client_method()); 137 return(DTLSv1_client_method());
135 else 138 else
136 return(NULL); 139 return(NULL);
@@ -144,8 +147,7 @@ IMPLEMENT_dtls1_meth_func(DTLSv1_client_method,
144int dtls1_connect(SSL *s) 147int dtls1_connect(SSL *s)
145 { 148 {
146 BUF_MEM *buf=NULL; 149 BUF_MEM *buf=NULL;
147 unsigned long Time=(unsigned long)time(NULL),l; 150 unsigned long Time=(unsigned long)time(NULL);
148 long num1;
149 void (*cb)(const SSL *ssl,int type,int val)=NULL; 151 void (*cb)(const SSL *ssl,int type,int val)=NULL;
150 int ret= -1; 152 int ret= -1;
151 int new_state,state,skip=0;; 153 int new_state,state,skip=0;;
@@ -181,7 +183,8 @@ int dtls1_connect(SSL *s)
181 s->server=0; 183 s->server=0;
182 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); 184 if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1);
183 185
184 if ((s->version & 0xff00 ) != (DTLS1_VERSION & 0xff00)) 186 if ((s->version & 0xff00 ) != (DTLS1_VERSION & 0xff00) &&
187 (s->version & 0xff00 ) != (DTLS1_BAD_VER & 0xff00))
185 { 188 {
186 SSLerr(SSL_F_DTLS1_CONNECT, ERR_R_INTERNAL_ERROR); 189 SSLerr(SSL_F_DTLS1_CONNECT, ERR_R_INTERNAL_ERROR);
187 ret = -1; 190 ret = -1;
@@ -219,6 +222,8 @@ int dtls1_connect(SSL *s)
219 s->init_num=0; 222 s->init_num=0;
220 /* mark client_random uninitialized */ 223 /* mark client_random uninitialized */
221 memset(s->s3->client_random,0,sizeof(s->s3->client_random)); 224 memset(s->s3->client_random,0,sizeof(s->s3->client_random));
225 s->d1->send_cookie = 0;
226 s->hit = 0;
222 break; 227 break;
223 228
224 case SSL3_ST_CW_CLNT_HELLO_A: 229 case SSL3_ST_CW_CLNT_HELLO_A:
@@ -229,6 +234,7 @@ int dtls1_connect(SSL *s)
229 /* every DTLS ClientHello resets Finished MAC */ 234 /* every DTLS ClientHello resets Finished MAC */
230 ssl3_init_finished_mac(s); 235 ssl3_init_finished_mac(s);
231 236
237 dtls1_start_timer(s);
232 ret=dtls1_client_hello(s); 238 ret=dtls1_client_hello(s);
233 if (ret <= 0) goto end; 239 if (ret <= 0) goto end;
234 240
@@ -254,6 +260,7 @@ int dtls1_connect(SSL *s)
254 if (ret <= 0) goto end; 260 if (ret <= 0) goto end;
255 else 261 else
256 { 262 {
263 dtls1_stop_timer(s);
257 if (s->hit) 264 if (s->hit)
258 s->state=SSL3_ST_CR_FINISHED_A; 265 s->state=SSL3_ST_CR_FINISHED_A;
259 else 266 else
@@ -268,6 +275,7 @@ int dtls1_connect(SSL *s)
268 ret = dtls1_get_hello_verify(s); 275 ret = dtls1_get_hello_verify(s);
269 if ( ret <= 0) 276 if ( ret <= 0)
270 goto end; 277 goto end;
278 dtls1_stop_timer(s);
271 if ( s->d1->send_cookie) /* start again, with a cookie */ 279 if ( s->d1->send_cookie) /* start again, with a cookie */
272 s->state=SSL3_ST_CW_CLNT_HELLO_A; 280 s->state=SSL3_ST_CW_CLNT_HELLO_A;
273 else 281 else
@@ -277,15 +285,44 @@ int dtls1_connect(SSL *s)
277 285
278 case SSL3_ST_CR_CERT_A: 286 case SSL3_ST_CR_CERT_A:
279 case SSL3_ST_CR_CERT_B: 287 case SSL3_ST_CR_CERT_B:
280 /* Check if it is anon DH */ 288#ifndef OPENSSL_NO_TLSEXT
281 if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) 289 ret=ssl3_check_finished(s);
290 if (ret <= 0) goto end;
291 if (ret == 2)
292 {
293 s->hit = 1;
294 if (s->tlsext_ticket_expected)
295 s->state=SSL3_ST_CR_SESSION_TICKET_A;
296 else
297 s->state=SSL3_ST_CR_FINISHED_A;
298 s->init_num=0;
299 break;
300 }
301#endif
302 /* Check if it is anon DH or PSK */
303 if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
304 !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
282 { 305 {
283 ret=ssl3_get_server_certificate(s); 306 ret=ssl3_get_server_certificate(s);
284 if (ret <= 0) goto end; 307 if (ret <= 0) goto end;
308#ifndef OPENSSL_NO_TLSEXT
309 if (s->tlsext_status_expected)
310 s->state=SSL3_ST_CR_CERT_STATUS_A;
311 else
312 s->state=SSL3_ST_CR_KEY_EXCH_A;
313 }
314 else
315 {
316 skip = 1;
317 s->state=SSL3_ST_CR_KEY_EXCH_A;
318 }
319#else
285 } 320 }
286 else 321 else
287 skip=1; 322 skip=1;
323
288 s->state=SSL3_ST_CR_KEY_EXCH_A; 324 s->state=SSL3_ST_CR_KEY_EXCH_A;
325#endif
289 s->init_num=0; 326 s->init_num=0;
290 break; 327 break;
291 328
@@ -329,6 +366,7 @@ int dtls1_connect(SSL *s)
329 case SSL3_ST_CW_CERT_B: 366 case SSL3_ST_CW_CERT_B:
330 case SSL3_ST_CW_CERT_C: 367 case SSL3_ST_CW_CERT_C:
331 case SSL3_ST_CW_CERT_D: 368 case SSL3_ST_CW_CERT_D:
369 dtls1_start_timer(s);
332 ret=dtls1_send_client_certificate(s); 370 ret=dtls1_send_client_certificate(s);
333 if (ret <= 0) goto end; 371 if (ret <= 0) goto end;
334 s->state=SSL3_ST_CW_KEY_EXCH_A; 372 s->state=SSL3_ST_CW_KEY_EXCH_A;
@@ -337,9 +375,9 @@ int dtls1_connect(SSL *s)
337 375
338 case SSL3_ST_CW_KEY_EXCH_A: 376 case SSL3_ST_CW_KEY_EXCH_A:
339 case SSL3_ST_CW_KEY_EXCH_B: 377 case SSL3_ST_CW_KEY_EXCH_B:
378 dtls1_start_timer(s);
340 ret=dtls1_send_client_key_exchange(s); 379 ret=dtls1_send_client_key_exchange(s);
341 if (ret <= 0) goto end; 380 if (ret <= 0) goto end;
342 l=s->s3->tmp.new_cipher->algorithms;
343 /* EAY EAY EAY need to check for DH fix cert 381 /* EAY EAY EAY need to check for DH fix cert
344 * sent back */ 382 * sent back */
345 /* For TLS, cert_req is set to 2, so a cert chain 383 /* For TLS, cert_req is set to 2, so a cert chain
@@ -359,6 +397,7 @@ int dtls1_connect(SSL *s)
359 397
360 case SSL3_ST_CW_CERT_VRFY_A: 398 case SSL3_ST_CW_CERT_VRFY_A:
361 case SSL3_ST_CW_CERT_VRFY_B: 399 case SSL3_ST_CW_CERT_VRFY_B:
400 dtls1_start_timer(s);
362 ret=dtls1_send_client_verify(s); 401 ret=dtls1_send_client_verify(s);
363 if (ret <= 0) goto end; 402 if (ret <= 0) goto end;
364 s->state=SSL3_ST_CW_CHANGE_A; 403 s->state=SSL3_ST_CW_CHANGE_A;
@@ -368,6 +407,7 @@ int dtls1_connect(SSL *s)
368 407
369 case SSL3_ST_CW_CHANGE_A: 408 case SSL3_ST_CW_CHANGE_A:
370 case SSL3_ST_CW_CHANGE_B: 409 case SSL3_ST_CW_CHANGE_B:
410 dtls1_start_timer(s);
371 ret=dtls1_send_change_cipher_spec(s, 411 ret=dtls1_send_change_cipher_spec(s,
372 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); 412 SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B);
373 if (ret <= 0) goto end; 413 if (ret <= 0) goto end;
@@ -402,6 +442,7 @@ int dtls1_connect(SSL *s)
402 442
403 case SSL3_ST_CW_FINISHED_A: 443 case SSL3_ST_CW_FINISHED_A:
404 case SSL3_ST_CW_FINISHED_B: 444 case SSL3_ST_CW_FINISHED_B:
445 dtls1_start_timer(s);
405 ret=dtls1_send_finished(s, 446 ret=dtls1_send_finished(s,
406 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, 447 SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B,
407 s->method->ssl3_enc->client_finished_label, 448 s->method->ssl3_enc->client_finished_label,
@@ -423,20 +464,43 @@ int dtls1_connect(SSL *s)
423 } 464 }
424 else 465 else
425 { 466 {
467#ifndef OPENSSL_NO_TLSEXT
468 /* Allow NewSessionTicket if ticket expected */
469 if (s->tlsext_ticket_expected)
470 s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
471 else
472#endif
473
426 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; 474 s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
427 } 475 }
428 s->init_num=0; 476 s->init_num=0;
429 /* mark client_random uninitialized */
430 memset (s->s3->client_random,0,sizeof(s->s3->client_random));
431
432 break; 477 break;
433 478
479#ifndef OPENSSL_NO_TLSEXT
480 case SSL3_ST_CR_SESSION_TICKET_A:
481 case SSL3_ST_CR_SESSION_TICKET_B:
482 ret=ssl3_get_new_session_ticket(s);
483 if (ret <= 0) goto end;
484 s->state=SSL3_ST_CR_FINISHED_A;
485 s->init_num=0;
486 break;
487
488 case SSL3_ST_CR_CERT_STATUS_A:
489 case SSL3_ST_CR_CERT_STATUS_B:
490 ret=ssl3_get_cert_status(s);
491 if (ret <= 0) goto end;
492 s->state=SSL3_ST_CR_KEY_EXCH_A;
493 s->init_num=0;
494 break;
495#endif
496
434 case SSL3_ST_CR_FINISHED_A: 497 case SSL3_ST_CR_FINISHED_A:
435 case SSL3_ST_CR_FINISHED_B: 498 case SSL3_ST_CR_FINISHED_B:
436 499 s->d1->change_cipher_spec_ok = 1;
437 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, 500 ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
438 SSL3_ST_CR_FINISHED_B); 501 SSL3_ST_CR_FINISHED_B);
439 if (ret <= 0) goto end; 502 if (ret <= 0) goto end;
503 dtls1_stop_timer(s);
440 504
441 if (s->hit) 505 if (s->hit)
442 s->state=SSL3_ST_CW_CHANGE_A; 506 s->state=SSL3_ST_CW_CHANGE_A;
@@ -446,16 +510,13 @@ int dtls1_connect(SSL *s)
446 break; 510 break;
447 511
448 case SSL3_ST_CW_FLUSH: 512 case SSL3_ST_CW_FLUSH:
449 /* number of bytes to be flushed */ 513 s->rwstate=SSL_WRITING;
450 num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); 514 if (BIO_flush(s->wbio) <= 0)
451 if (num1 > 0)
452 { 515 {
453 s->rwstate=SSL_WRITING; 516 ret= -1;
454 num1=BIO_flush(s->wbio); 517 goto end;
455 if (num1 <= 0) { ret= -1; goto end; }
456 s->rwstate=SSL_NOTHING;
457 } 518 }
458 519 s->rwstate=SSL_NOTHING;
459 s->state=s->s3->tmp.next_state; 520 s->state=s->s3->tmp.next_state;
460 break; 521 break;
461 522
@@ -492,6 +553,7 @@ int dtls1_connect(SSL *s)
492 553
493 /* done with handshaking */ 554 /* done with handshaking */
494 s->d1->handshake_read_seq = 0; 555 s->d1->handshake_read_seq = 0;
556 s->d1->next_handshake_write_seq = 0;
495 goto end; 557 goto end;
496 /* break; */ 558 /* break; */
497 559
@@ -541,8 +603,14 @@ int dtls1_client_hello(SSL *s)
541 buf=(unsigned char *)s->init_buf->data; 603 buf=(unsigned char *)s->init_buf->data;
542 if (s->state == SSL3_ST_CW_CLNT_HELLO_A) 604 if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
543 { 605 {
606 SSL_SESSION *sess = s->session;
544 if ((s->session == NULL) || 607 if ((s->session == NULL) ||
545 (s->session->ssl_version != s->version) || 608 (s->session->ssl_version != s->version) ||
609#ifdef OPENSSL_NO_TLSEXT
610 !sess->session_id_length ||
611#else
612 (!sess->session_id_length && !sess->tlsext_tick) ||
613#endif
546 (s->session->not_resumable)) 614 (s->session->not_resumable))
547 { 615 {
548 if (!ssl_get_new_session(s,0)) 616 if (!ssl_get_new_session(s,0))
@@ -551,6 +619,7 @@ int dtls1_client_hello(SSL *s)
551 /* else use the pre-loaded session */ 619 /* else use the pre-loaded session */
552 620
553 p=s->s3->client_random; 621 p=s->s3->client_random;
622
554 /* if client_random is initialized, reuse it, we are 623 /* if client_random is initialized, reuse it, we are
555 * required to use same upon reply to HelloVerify */ 624 * required to use same upon reply to HelloVerify */
556 for (i=0;p[i]=='\0' && i<sizeof(s->s3->client_random);i++) ; 625 for (i=0;p[i]=='\0' && i<sizeof(s->s3->client_random);i++) ;
@@ -558,7 +627,7 @@ int dtls1_client_hello(SSL *s)
558 { 627 {
559 Time=(unsigned long)time(NULL); /* Time */ 628 Time=(unsigned long)time(NULL); /* Time */
560 l2n(Time,p); 629 l2n(Time,p);
561 RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4); 630 RAND_pseudo_bytes(p,sizeof(s->s3->client_random)-4);
562 } 631 }
563 632
564 /* Do the message type and length last */ 633 /* Do the message type and length last */
@@ -621,7 +690,15 @@ int dtls1_client_hello(SSL *s)
621 *(p++)=comp->id; 690 *(p++)=comp->id;
622 } 691 }
623 *(p++)=0; /* Add the NULL method */ 692 *(p++)=0; /* Add the NULL method */
624 693
694#ifndef OPENSSL_NO_TLSEXT
695 if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
696 {
697 SSLerr(SSL_F_DTLS1_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
698 goto err;
699 }
700#endif
701
625 l=(p-d); 702 l=(p-d);
626 d=buf; 703 d=buf;
627 704
@@ -697,7 +774,7 @@ int dtls1_send_client_key_exchange(SSL *s)
697 { 774 {
698 unsigned char *p,*d; 775 unsigned char *p,*d;
699 int n; 776 int n;
700 unsigned long l; 777 unsigned long alg_k;
701#ifndef OPENSSL_NO_RSA 778#ifndef OPENSSL_NO_RSA
702 unsigned char *q; 779 unsigned char *q;
703 EVP_PKEY *pkey=NULL; 780 EVP_PKEY *pkey=NULL;
@@ -705,18 +782,26 @@ int dtls1_send_client_key_exchange(SSL *s)
705#ifndef OPENSSL_NO_KRB5 782#ifndef OPENSSL_NO_KRB5
706 KSSL_ERR kssl_err; 783 KSSL_ERR kssl_err;
707#endif /* OPENSSL_NO_KRB5 */ 784#endif /* OPENSSL_NO_KRB5 */
785#ifndef OPENSSL_NO_ECDH
786 EC_KEY *clnt_ecdh = NULL;
787 const EC_POINT *srvr_ecpoint = NULL;
788 EVP_PKEY *srvr_pub_pkey = NULL;
789 unsigned char *encodedPoint = NULL;
790 int encoded_pt_len = 0;
791 BN_CTX * bn_ctx = NULL;
792#endif
708 793
709 if (s->state == SSL3_ST_CW_KEY_EXCH_A) 794 if (s->state == SSL3_ST_CW_KEY_EXCH_A)
710 { 795 {
711 d=(unsigned char *)s->init_buf->data; 796 d=(unsigned char *)s->init_buf->data;
712 p= &(d[DTLS1_HM_HEADER_LENGTH]); 797 p= &(d[DTLS1_HM_HEADER_LENGTH]);
713 798
714 l=s->s3->tmp.new_cipher->algorithms; 799 alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
715 800
716 /* Fool emacs indentation */ 801 /* Fool emacs indentation */
717 if (0) {} 802 if (0) {}
718#ifndef OPENSSL_NO_RSA 803#ifndef OPENSSL_NO_RSA
719 else if (l & SSL_kRSA) 804 else if (alg_k & SSL_kRSA)
720 { 805 {
721 RSA *rsa; 806 RSA *rsa;
722 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; 807 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
@@ -775,7 +860,7 @@ int dtls1_send_client_key_exchange(SSL *s)
775 } 860 }
776#endif 861#endif
777#ifndef OPENSSL_NO_KRB5 862#ifndef OPENSSL_NO_KRB5
778 else if (l & SSL_kKRB5) 863 else if (alg_k & SSL_kKRB5)
779 { 864 {
780 krb5_error_code krb5rc; 865 krb5_error_code krb5rc;
781 KSSL_CTX *kssl_ctx = s->kssl_ctx; 866 KSSL_CTX *kssl_ctx = s->kssl_ctx;
@@ -783,7 +868,7 @@ int dtls1_send_client_key_exchange(SSL *s)
783 krb5_data *enc_ticket; 868 krb5_data *enc_ticket;
784 krb5_data authenticator, *authp = NULL; 869 krb5_data authenticator, *authp = NULL;
785 EVP_CIPHER_CTX ciph_ctx; 870 EVP_CIPHER_CTX ciph_ctx;
786 EVP_CIPHER *enc = NULL; 871 const EVP_CIPHER *enc = NULL;
787 unsigned char iv[EVP_MAX_IV_LENGTH]; 872 unsigned char iv[EVP_MAX_IV_LENGTH];
788 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; 873 unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
789 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH 874 unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH
@@ -794,7 +879,7 @@ int dtls1_send_client_key_exchange(SSL *s)
794 879
795#ifdef KSSL_DEBUG 880#ifdef KSSL_DEBUG
796 printf("ssl3_send_client_key_exchange(%lx & %lx)\n", 881 printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
797 l, SSL_kKRB5); 882 alg_k, SSL_kKRB5);
798#endif /* KSSL_DEBUG */ 883#endif /* KSSL_DEBUG */
799 884
800 authp = NULL; 885 authp = NULL;
@@ -884,7 +969,7 @@ int dtls1_send_client_key_exchange(SSL *s)
884 sizeof tmp_buf); 969 sizeof tmp_buf);
885 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); 970 EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
886 outl += padl; 971 outl += padl;
887 if (outl > sizeof epms) 972 if (outl > (int)sizeof epms)
888 { 973 {
889 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); 974 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
890 goto err; 975 goto err;
@@ -907,7 +992,7 @@ int dtls1_send_client_key_exchange(SSL *s)
907 } 992 }
908#endif 993#endif
909#ifndef OPENSSL_NO_DH 994#ifndef OPENSSL_NO_DH
910 else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) 995 else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
911 { 996 {
912 DH *dh_srvr,*dh_clnt; 997 DH *dh_srvr,*dh_clnt;
913 998
@@ -962,6 +1047,274 @@ int dtls1_send_client_key_exchange(SSL *s)
962 /* perhaps clean things up a bit EAY EAY EAY EAY*/ 1047 /* perhaps clean things up a bit EAY EAY EAY EAY*/
963 } 1048 }
964#endif 1049#endif
1050#ifndef OPENSSL_NO_ECDH
1051 else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
1052 {
1053 const EC_GROUP *srvr_group = NULL;
1054 EC_KEY *tkey;
1055 int ecdh_clnt_cert = 0;
1056 int field_size = 0;
1057
1058 /* Did we send out the client's
1059 * ECDH share for use in premaster
1060 * computation as part of client certificate?
1061 * If so, set ecdh_clnt_cert to 1.
1062 */
1063 if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL))
1064 {
1065 /* XXX: For now, we do not support client
1066 * authentication using ECDH certificates.
1067 * To add such support, one needs to add
1068 * code that checks for appropriate
1069 * conditions and sets ecdh_clnt_cert to 1.
1070 * For example, the cert have an ECC
1071 * key on the same curve as the server's
1072 * and the key should be authorized for
1073 * key agreement.
1074 *
1075 * One also needs to add code in ssl3_connect
1076 * to skip sending the certificate verify
1077 * message.
1078 *
1079 * if ((s->cert->key->privatekey != NULL) &&
1080 * (s->cert->key->privatekey->type ==
1081 * EVP_PKEY_EC) && ...)
1082 * ecdh_clnt_cert = 1;
1083 */
1084 }
1085
1086 if (s->session->sess_cert->peer_ecdh_tmp != NULL)
1087 {
1088 tkey = s->session->sess_cert->peer_ecdh_tmp;
1089 }
1090 else
1091 {
1092 /* Get the Server Public Key from Cert */
1093 srvr_pub_pkey = X509_get_pubkey(s->session-> \
1094 sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
1095 if ((srvr_pub_pkey == NULL) ||
1096 (srvr_pub_pkey->type != EVP_PKEY_EC) ||
1097 (srvr_pub_pkey->pkey.ec == NULL))
1098 {
1099 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1100 ERR_R_INTERNAL_ERROR);
1101 goto err;
1102 }
1103
1104 tkey = srvr_pub_pkey->pkey.ec;
1105 }
1106
1107 srvr_group = EC_KEY_get0_group(tkey);
1108 srvr_ecpoint = EC_KEY_get0_public_key(tkey);
1109
1110 if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
1111 {
1112 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1113 ERR_R_INTERNAL_ERROR);
1114 goto err;
1115 }
1116
1117 if ((clnt_ecdh=EC_KEY_new()) == NULL)
1118 {
1119 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1120 goto err;
1121 }
1122
1123 if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
1124 {
1125 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
1126 goto err;
1127 }
1128 if (ecdh_clnt_cert)
1129 {
1130 /* Reuse key info from our certificate
1131 * We only need our private key to perform
1132 * the ECDH computation.
1133 */
1134 const BIGNUM *priv_key;
1135 tkey = s->cert->key->privatekey->pkey.ec;
1136 priv_key = EC_KEY_get0_private_key(tkey);
1137 if (priv_key == NULL)
1138 {
1139 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1140 goto err;
1141 }
1142 if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
1143 {
1144 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
1145 goto err;
1146 }
1147 }
1148 else
1149 {
1150 /* Generate a new ECDH key pair */
1151 if (!(EC_KEY_generate_key(clnt_ecdh)))
1152 {
1153 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
1154 goto err;
1155 }
1156 }
1157
1158 /* use the 'p' output buffer for the ECDH key, but
1159 * make sure to clear it out afterwards
1160 */
1161
1162 field_size = EC_GROUP_get_degree(srvr_group);
1163 if (field_size <= 0)
1164 {
1165 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1166 ERR_R_ECDH_LIB);
1167 goto err;
1168 }
1169 n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
1170 if (n <= 0)
1171 {
1172 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1173 ERR_R_ECDH_LIB);
1174 goto err;
1175 }
1176
1177 /* generate master key from the result */
1178 s->session->master_key_length = s->method->ssl3_enc \
1179 -> generate_master_secret(s,
1180 s->session->master_key,
1181 p, n);
1182
1183 memset(p, 0, n); /* clean up */
1184
1185 if (ecdh_clnt_cert)
1186 {
1187 /* Send empty client key exch message */
1188 n = 0;
1189 }
1190 else
1191 {
1192 /* First check the size of encoding and
1193 * allocate memory accordingly.
1194 */
1195 encoded_pt_len =
1196 EC_POINT_point2oct(srvr_group,
1197 EC_KEY_get0_public_key(clnt_ecdh),
1198 POINT_CONVERSION_UNCOMPRESSED,
1199 NULL, 0, NULL);
1200
1201 encodedPoint = (unsigned char *)
1202 OPENSSL_malloc(encoded_pt_len *
1203 sizeof(unsigned char));
1204 bn_ctx = BN_CTX_new();
1205 if ((encodedPoint == NULL) ||
1206 (bn_ctx == NULL))
1207 {
1208 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
1209 goto err;
1210 }
1211
1212 /* Encode the public key */
1213 n = EC_POINT_point2oct(srvr_group,
1214 EC_KEY_get0_public_key(clnt_ecdh),
1215 POINT_CONVERSION_UNCOMPRESSED,
1216 encodedPoint, encoded_pt_len, bn_ctx);
1217
1218 *p = n; /* length of encoded point */
1219 /* Encoded point will be copied here */
1220 p += 1;
1221 /* copy the point */
1222 memcpy((unsigned char *)p, encodedPoint, n);
1223 /* increment n to account for length field */
1224 n += 1;
1225 }
1226
1227 /* Free allocated memory */
1228 BN_CTX_free(bn_ctx);
1229 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
1230 if (clnt_ecdh != NULL)
1231 EC_KEY_free(clnt_ecdh);
1232 EVP_PKEY_free(srvr_pub_pkey);
1233 }
1234#endif /* !OPENSSL_NO_ECDH */
1235
1236#ifndef OPENSSL_NO_PSK
1237 else if (alg_k & SSL_kPSK)
1238 {
1239 char identity[PSK_MAX_IDENTITY_LEN];
1240 unsigned char *t = NULL;
1241 unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
1242 unsigned int pre_ms_len = 0, psk_len = 0;
1243 int psk_err = 1;
1244
1245 n = 0;
1246 if (s->psk_client_callback == NULL)
1247 {
1248 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1249 SSL_R_PSK_NO_CLIENT_CB);
1250 goto err;
1251 }
1252
1253 psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
1254 identity, PSK_MAX_IDENTITY_LEN,
1255 psk_or_pre_ms, sizeof(psk_or_pre_ms));
1256 if (psk_len > PSK_MAX_PSK_LEN)
1257 {
1258 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1259 ERR_R_INTERNAL_ERROR);
1260 goto psk_err;
1261 }
1262 else if (psk_len == 0)
1263 {
1264 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1265 SSL_R_PSK_IDENTITY_NOT_FOUND);
1266 goto psk_err;
1267 }
1268
1269 /* create PSK pre_master_secret */
1270 pre_ms_len = 2+psk_len+2+psk_len;
1271 t = psk_or_pre_ms;
1272 memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
1273 s2n(psk_len, t);
1274 memset(t, 0, psk_len);
1275 t+=psk_len;
1276 s2n(psk_len, t);
1277
1278 if (s->session->psk_identity_hint != NULL)
1279 OPENSSL_free(s->session->psk_identity_hint);
1280 s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
1281 if (s->ctx->psk_identity_hint != NULL &&
1282 s->session->psk_identity_hint == NULL)
1283 {
1284 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1285 ERR_R_MALLOC_FAILURE);
1286 goto psk_err;
1287 }
1288
1289 if (s->session->psk_identity != NULL)
1290 OPENSSL_free(s->session->psk_identity);
1291 s->session->psk_identity = BUF_strdup(identity);
1292 if (s->session->psk_identity == NULL)
1293 {
1294 SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
1295 ERR_R_MALLOC_FAILURE);
1296 goto psk_err;
1297 }
1298
1299 s->session->master_key_length =
1300 s->method->ssl3_enc->generate_master_secret(s,
1301 s->session->master_key,
1302 psk_or_pre_ms, pre_ms_len);
1303 n = strlen(identity);
1304 s2n(n, p);
1305 memcpy(p, identity, n);
1306 n+=2;
1307 psk_err = 0;
1308 psk_err:
1309 OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
1310 OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
1311 if (psk_err != 0)
1312 {
1313 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1314 goto err;
1315 }
1316 }
1317#endif
965 else 1318 else
966 { 1319 {
967 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); 1320 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
@@ -990,6 +1343,13 @@ int dtls1_send_client_key_exchange(SSL *s)
990 /* SSL3_ST_CW_KEY_EXCH_B */ 1343 /* SSL3_ST_CW_KEY_EXCH_B */
991 return(dtls1_do_write(s,SSL3_RT_HANDSHAKE)); 1344 return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
992err: 1345err:
1346#ifndef OPENSSL_NO_ECDH
1347 BN_CTX_free(bn_ctx);
1348 if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
1349 if (clnt_ecdh != NULL)
1350 EC_KEY_free(clnt_ecdh);
1351 EVP_PKEY_free(srvr_pub_pkey);
1352#endif
993 return(-1); 1353 return(-1);
994 } 1354 }
995 1355
@@ -1002,7 +1362,7 @@ int dtls1_send_client_verify(SSL *s)
1002 unsigned u=0; 1362 unsigned u=0;
1003#endif 1363#endif
1004 unsigned long n; 1364 unsigned long n;
1005#ifndef OPENSSL_NO_DSA 1365#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
1006 int j; 1366 int j;
1007#endif 1367#endif
1008 1368
@@ -1012,14 +1372,16 @@ int dtls1_send_client_verify(SSL *s)
1012 p= &(d[DTLS1_HM_HEADER_LENGTH]); 1372 p= &(d[DTLS1_HM_HEADER_LENGTH]);
1013 pkey=s->cert->key->privatekey; 1373 pkey=s->cert->key->privatekey;
1014 1374
1015 s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), 1375 s->method->ssl3_enc->cert_verify_mac(s,
1376 NID_sha1,
1016 &(data[MD5_DIGEST_LENGTH])); 1377 &(data[MD5_DIGEST_LENGTH]));
1017 1378
1018#ifndef OPENSSL_NO_RSA 1379#ifndef OPENSSL_NO_RSA
1019 if (pkey->type == EVP_PKEY_RSA) 1380 if (pkey->type == EVP_PKEY_RSA)
1020 { 1381 {
1021 s->method->ssl3_enc->cert_verify_mac(s, 1382 s->method->ssl3_enc->cert_verify_mac(s,
1022 &(s->s3->finish_dgst1),&(data[0])); 1383 NID_md5,
1384 &(data[0]));
1023 if (RSA_sign(NID_md5_sha1, data, 1385 if (RSA_sign(NID_md5_sha1, data,
1024 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, 1386 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
1025 &(p[2]), &u, pkey->pkey.rsa) <= 0 ) 1387 &(p[2]), &u, pkey->pkey.rsa) <= 0 )
@@ -1048,6 +1410,23 @@ int dtls1_send_client_verify(SSL *s)
1048 } 1410 }
1049 else 1411 else
1050#endif 1412#endif
1413#ifndef OPENSSL_NO_ECDSA
1414 if (pkey->type == EVP_PKEY_EC)
1415 {
1416 if (!ECDSA_sign(pkey->save_type,
1417 &(data[MD5_DIGEST_LENGTH]),
1418 SHA_DIGEST_LENGTH,&(p[2]),
1419 (unsigned int *)&j,pkey->pkey.ec))
1420 {
1421 SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,
1422 ERR_R_ECDSA_LIB);
1423 goto err;
1424 }
1425 s2n(j,p);
1426 n=j+2;
1427 }
1428 else
1429#endif
1051 { 1430 {
1052 SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); 1431 SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
1053 goto err; 1432 goto err;
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-26 08:57:37 +0000