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d02b48c6 | 1 | /* ssl/s3_clnt.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
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. | |
8 | * | |
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). | |
15 | * | |
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. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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)" | |
40 | * | |
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 | |
51 | * SUCH DAMAGE. | |
52 | * | |
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.] | |
57 | */ | |
8c74b5e5 | 58 | /* ==================================================================== |
52b8dad8 | 59 | * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. |
8c74b5e5 BM |
60 | * |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
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 | |
71 | * distribution. | |
72 | * | |
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/)" | |
77 | * | |
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. | |
82 | * | |
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. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
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 | * ==================================================================== | |
105 | * | |
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). | |
109 | * | |
110 | */ | |
ea262260 BM |
111 | /* ==================================================================== |
112 | * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. | |
113 | * | |
114 | * Portions of the attached software ("Contribution") are developed by | |
115 | * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. | |
116 | * | |
117 | * The Contribution is licensed pursuant to the OpenSSL open source | |
118 | * license provided above. | |
119 | * | |
ea262260 BM |
120 | * ECC cipher suite support in OpenSSL originally written by |
121 | * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories. | |
122 | * | |
123 | */ | |
ddac1974 NL |
124 | /* ==================================================================== |
125 | * Copyright 2005 Nokia. All rights reserved. | |
126 | * | |
127 | * The portions of the attached software ("Contribution") is developed by | |
128 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
129 | * license. | |
130 | * | |
131 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
132 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
133 | * support (see RFC 4279) to OpenSSL. | |
134 | * | |
135 | * No patent licenses or other rights except those expressly stated in | |
136 | * the OpenSSL open source license shall be deemed granted or received | |
137 | * expressly, by implication, estoppel, or otherwise. | |
138 | * | |
139 | * No assurances are provided by Nokia that the Contribution does not | |
140 | * infringe the patent or other intellectual property rights of any third | |
141 | * party or that the license provides you with all the necessary rights | |
142 | * to make use of the Contribution. | |
143 | * | |
144 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
145 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
146 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
147 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
148 | * OTHERWISE. | |
149 | */ | |
d02b48c6 RE |
150 | |
151 | #include <stdio.h> | |
7b63c0fa LJ |
152 | #include "ssl_locl.h" |
153 | #include "kssl_lcl.h" | |
ec577822 BM |
154 | #include <openssl/buffer.h> |
155 | #include <openssl/rand.h> | |
156 | #include <openssl/objects.h> | |
157 | #include <openssl/evp.h> | |
dbad1690 | 158 | #include <openssl/md5.h> |
086e32a6 DSH |
159 | #ifdef OPENSSL_FIPS |
160 | #include <openssl/fips.h> | |
161 | #endif | |
3eeaab4b | 162 | #ifndef OPENSSL_NO_DH |
60a938c6 | 163 | #include <openssl/dh.h> |
3eeaab4b | 164 | #endif |
d095b68d | 165 | #include <openssl/bn.h> |
368888bc DSH |
166 | #ifndef OPENSSL_NO_ENGINE |
167 | #include <openssl/engine.h> | |
168 | #endif | |
f9b3bff6 | 169 | |
4ebb342f | 170 | static const SSL_METHOD *ssl3_get_client_method(int ver); |
ccd86b68 | 171 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
ea262260 | 172 | |
4ebb342f | 173 | static const SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 174 | { |
58964a49 | 175 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
176 | return(SSLv3_client_method()); |
177 | else | |
178 | return(NULL); | |
179 | } | |
180 | ||
f3b656b2 DSH |
181 | IMPLEMENT_ssl3_meth_func(SSLv3_client_method, |
182 | ssl_undefined_function, | |
183 | ssl3_connect, | |
184 | ssl3_get_client_method) | |
d02b48c6 | 185 | |
6b691a5c | 186 | int ssl3_connect(SSL *s) |
d02b48c6 | 187 | { |
8d6ad9e3 | 188 | BUF_MEM *buf=NULL; |
52b8dad8 | 189 | unsigned long Time=(unsigned long)time(NULL); |
45d87a1f | 190 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 191 | int ret= -1; |
477fd459 | 192 | int new_state,state,skip=0; |
d02b48c6 | 193 | |
eb952088 | 194 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 195 | ERR_clear_error(); |
58964a49 | 196 | clear_sys_error(); |
d02b48c6 RE |
197 | |
198 | if (s->info_callback != NULL) | |
199 | cb=s->info_callback; | |
200 | else if (s->ctx->info_callback != NULL) | |
201 | cb=s->ctx->info_callback; | |
202 | ||
d02b48c6 | 203 | s->in_handshake++; |
979689aa | 204 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 | 205 | |
4817504d DSH |
206 | #ifndef OPENSSL_NO_HEARTBEATS |
207 | /* If we're awaiting a HeartbeatResponse, pretend we | |
208 | * already got and don't await it anymore, because | |
209 | * Heartbeats don't make sense during handshakes anyway. | |
210 | */ | |
211 | if (s->tlsext_hb_pending) | |
212 | { | |
213 | s->tlsext_hb_pending = 0; | |
214 | s->tlsext_hb_seq++; | |
215 | } | |
216 | #endif | |
217 | ||
d02b48c6 RE |
218 | for (;;) |
219 | { | |
220 | state=s->state; | |
221 | ||
222 | switch(s->state) | |
223 | { | |
224 | case SSL_ST_RENEGOTIATE: | |
44959ee4 | 225 | s->renegotiate=1; |
d02b48c6 | 226 | s->state=SSL_ST_CONNECT; |
413c4f45 | 227 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
228 | /* break */ |
229 | case SSL_ST_BEFORE: | |
230 | case SSL_ST_CONNECT: | |
231 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
232 | case SSL_ST_OK|SSL_ST_CONNECT: | |
233 | ||
413c4f45 | 234 | s->server=0; |
d02b48c6 RE |
235 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
236 | ||
58964a49 | 237 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 238 | { |
5277d7cb | 239 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
240 | ret = -1; |
241 | goto end; | |
242 | } | |
243 | ||
58964a49 | 244 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
245 | s->type=SSL_ST_CONNECT; |
246 | ||
247 | if (s->init_buf == NULL) | |
248 | { | |
249 | if ((buf=BUF_MEM_new()) == NULL) | |
250 | { | |
251 | ret= -1; | |
252 | goto end; | |
253 | } | |
254 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
255 | { | |
256 | ret= -1; | |
257 | goto end; | |
258 | } | |
259 | s->init_buf=buf; | |
8d6ad9e3 | 260 | buf=NULL; |
d02b48c6 RE |
261 | } |
262 | ||
263 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
264 | ||
265 | /* setup buffing BIO */ | |
58964a49 | 266 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
267 | |
268 | /* don't push the buffering BIO quite yet */ | |
269 | ||
270 | ssl3_init_finished_mac(s); | |
271 | ||
272 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 273 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
274 | s->init_num=0; |
275 | break; | |
276 | ||
277 | case SSL3_ST_CW_CLNT_HELLO_A: | |
278 | case SSL3_ST_CW_CLNT_HELLO_B: | |
279 | ||
280 | s->shutdown=0; | |
281 | ret=ssl3_client_hello(s); | |
282 | if (ret <= 0) goto end; | |
283 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
284 | s->init_num=0; | |
285 | ||
286 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
287 | if (s->bbio != s->wbio) |
288 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
289 | |
290 | break; | |
291 | ||
292 | case SSL3_ST_CR_SRVR_HELLO_A: | |
293 | case SSL3_ST_CR_SRVR_HELLO_B: | |
294 | ret=ssl3_get_server_hello(s); | |
295 | if (ret <= 0) goto end; | |
241520e6 | 296 | |
d02b48c6 | 297 | if (s->hit) |
c519e89f | 298 | { |
d02b48c6 | 299 | s->state=SSL3_ST_CR_FINISHED_A; |
c519e89f BM |
300 | #ifndef OPENSSL_NO_TLSEXT |
301 | if (s->tlsext_ticket_expected) | |
302 | { | |
303 | /* receive renewed session ticket */ | |
304 | s->state=SSL3_ST_CR_SESSION_TICKET_A; | |
305 | } | |
306 | #endif | |
307 | } | |
d02b48c6 | 308 | else |
a9e1c50b BL |
309 | { |
310 | #ifndef OPENSSL_NO_TLSEXT | |
311 | /* The server hello indicated that | |
312 | * an audit proof would follow. */ | |
313 | if (s->s3->tlsext_authz_server_promised) | |
314 | s->state=SSL3_ST_CR_SUPPLEMENTAL_DATA_A; | |
315 | else | |
316 | #endif | |
317 | s->state=SSL3_ST_CR_CERT_A; | |
318 | } | |
d02b48c6 RE |
319 | s->init_num=0; |
320 | break; | |
a9e1c50b BL |
321 | #ifndef OPENSSL_NO_TLSEXT |
322 | case SSL3_ST_CR_SUPPLEMENTAL_DATA_A: | |
323 | case SSL3_ST_CR_SUPPLEMENTAL_DATA_B: | |
324 | ret = tls1_get_server_supplemental_data(s); | |
325 | if (ret <= 0) goto end; | |
326 | s->state=SSL3_ST_CR_CERT_A; | |
327 | s->init_num = 0; | |
328 | break; | |
329 | #endif | |
d02b48c6 RE |
330 | case SSL3_ST_CR_CERT_A: |
331 | case SSL3_ST_CR_CERT_B: | |
6434abbf DSH |
332 | #ifndef OPENSSL_NO_TLSEXT |
333 | ret=ssl3_check_finished(s); | |
334 | if (ret <= 0) goto end; | |
335 | if (ret == 2) | |
336 | { | |
337 | s->hit = 1; | |
31f528b1 DSH |
338 | if (s->tlsext_ticket_expected) |
339 | s->state=SSL3_ST_CR_SESSION_TICKET_A; | |
340 | else | |
341 | s->state=SSL3_ST_CR_FINISHED_A; | |
6434abbf DSH |
342 | s->init_num=0; |
343 | break; | |
344 | } | |
345 | #endif | |
ea262260 | 346 | /* Check if it is anon DH/ECDH */ |
ddac1974 | 347 | /* or PSK */ |
52b8dad8 BM |
348 | if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) && |
349 | !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) | |
d02b48c6 RE |
350 | { |
351 | ret=ssl3_get_server_certificate(s); | |
352 | if (ret <= 0) goto end; | |
67c8e7f4 DSH |
353 | #ifndef OPENSSL_NO_TLSEXT |
354 | if (s->tlsext_status_expected) | |
355 | s->state=SSL3_ST_CR_CERT_STATUS_A; | |
356 | else | |
357 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
358 | } | |
359 | else | |
360 | { | |
361 | skip = 1; | |
362 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
d02b48c6 | 363 | } |
67c8e7f4 | 364 | #else |
3ce54f35 | 365 | } |
d02b48c6 RE |
366 | else |
367 | skip=1; | |
67c8e7f4 | 368 | |
d02b48c6 | 369 | s->state=SSL3_ST_CR_KEY_EXCH_A; |
67c8e7f4 | 370 | #endif |
d02b48c6 RE |
371 | s->init_num=0; |
372 | break; | |
373 | ||
374 | case SSL3_ST_CR_KEY_EXCH_A: | |
375 | case SSL3_ST_CR_KEY_EXCH_B: | |
376 | ret=ssl3_get_key_exchange(s); | |
377 | if (ret <= 0) goto end; | |
378 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
379 | s->init_num=0; | |
380 | ||
381 | /* at this point we check that we have the | |
382 | * required stuff from the server */ | |
383 | if (!ssl3_check_cert_and_algorithm(s)) | |
384 | { | |
385 | ret= -1; | |
386 | goto end; | |
387 | } | |
388 | break; | |
389 | ||
390 | case SSL3_ST_CR_CERT_REQ_A: | |
391 | case SSL3_ST_CR_CERT_REQ_B: | |
392 | ret=ssl3_get_certificate_request(s); | |
393 | if (ret <= 0) goto end; | |
394 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
395 | s->init_num=0; | |
396 | break; | |
397 | ||
398 | case SSL3_ST_CR_SRVR_DONE_A: | |
399 | case SSL3_ST_CR_SRVR_DONE_B: | |
400 | ret=ssl3_get_server_done(s); | |
401 | if (ret <= 0) goto end; | |
edc032b5 BL |
402 | #ifndef OPENSSL_NO_SRP |
403 | if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) | |
404 | { | |
405 | if ((ret = SRP_Calc_A_param(s))<=0) | |
406 | { | |
23bc7961 | 407 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SRP_A_CALC); |
edc032b5 BL |
408 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR); |
409 | goto end; | |
410 | } | |
411 | } | |
412 | #endif | |
d02b48c6 RE |
413 | if (s->s3->tmp.cert_req) |
414 | s->state=SSL3_ST_CW_CERT_A; | |
415 | else | |
416 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
417 | s->init_num=0; | |
418 | ||
419 | break; | |
420 | ||
421 | case SSL3_ST_CW_CERT_A: | |
422 | case SSL3_ST_CW_CERT_B: | |
423 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 424 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
425 | ret=ssl3_send_client_certificate(s); |
426 | if (ret <= 0) goto end; | |
427 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
428 | s->init_num=0; | |
429 | break; | |
430 | ||
431 | case SSL3_ST_CW_KEY_EXCH_A: | |
432 | case SSL3_ST_CW_KEY_EXCH_B: | |
433 | ret=ssl3_send_client_key_exchange(s); | |
434 | if (ret <= 0) goto end; | |
d02b48c6 RE |
435 | /* EAY EAY EAY need to check for DH fix cert |
436 | * sent back */ | |
58964a49 RE |
437 | /* For TLS, cert_req is set to 2, so a cert chain |
438 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
439 | /* XXX: For now, we do not support client |
440 | * authentication in ECDH cipher suites with | |
441 | * ECDH (rather than ECDSA) certificates. | |
442 | * We need to skip the certificate verify | |
443 | * message when client's ECDH public key is sent | |
444 | * inside the client certificate. | |
445 | */ | |
58964a49 | 446 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
447 | { |
448 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
449 | } | |
450 | else | |
451 | { | |
452 | s->state=SSL3_ST_CW_CHANGE_A; | |
453 | s->s3->change_cipher_spec=0; | |
454 | } | |
f0288f05 DSH |
455 | if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) |
456 | { | |
457 | s->state=SSL3_ST_CW_CHANGE_A; | |
458 | s->s3->change_cipher_spec=0; | |
459 | } | |
d02b48c6 RE |
460 | |
461 | s->init_num=0; | |
462 | break; | |
463 | ||
464 | case SSL3_ST_CW_CERT_VRFY_A: | |
465 | case SSL3_ST_CW_CERT_VRFY_B: | |
466 | ret=ssl3_send_client_verify(s); | |
467 | if (ret <= 0) goto end; | |
468 | s->state=SSL3_ST_CW_CHANGE_A; | |
469 | s->init_num=0; | |
470 | s->s3->change_cipher_spec=0; | |
471 | break; | |
472 | ||
473 | case SSL3_ST_CW_CHANGE_A: | |
474 | case SSL3_ST_CW_CHANGE_B: | |
475 | ret=ssl3_send_change_cipher_spec(s, | |
476 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
477 | if (ret <= 0) goto end; | |
ee2ffc27 | 478 | |
bf48836c | 479 | #if defined(OPENSSL_NO_TLSEXT) || defined(OPENSSL_NO_NEXTPROTONEG) |
d02b48c6 | 480 | s->state=SSL3_ST_CW_FINISHED_A; |
ee2ffc27 | 481 | #else |
6f31dd72 | 482 | if (s->s3->next_proto_neg_seen) |
ee2ffc27 BL |
483 | s->state=SSL3_ST_CW_NEXT_PROTO_A; |
484 | else | |
485 | s->state=SSL3_ST_CW_FINISHED_A; | |
486 | #endif | |
d02b48c6 RE |
487 | s->init_num=0; |
488 | ||
489 | s->session->cipher=s->s3->tmp.new_cipher; | |
09b6c2ef DSH |
490 | #ifdef OPENSSL_NO_COMP |
491 | s->session->compress_meth=0; | |
492 | #else | |
413c4f45 MC |
493 | if (s->s3->tmp.new_compression == NULL) |
494 | s->session->compress_meth=0; | |
495 | else | |
496 | s->session->compress_meth= | |
497 | s->s3->tmp.new_compression->id; | |
09b6c2ef | 498 | #endif |
58964a49 | 499 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
500 | { |
501 | ret= -1; | |
502 | goto end; | |
503 | } | |
504 | ||
58964a49 | 505 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
506 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
507 | { | |
508 | ret= -1; | |
509 | goto end; | |
510 | } | |
511 | ||
512 | break; | |
513 | ||
bf48836c | 514 | #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG) |
ee2ffc27 BL |
515 | case SSL3_ST_CW_NEXT_PROTO_A: |
516 | case SSL3_ST_CW_NEXT_PROTO_B: | |
517 | ret=ssl3_send_next_proto(s); | |
518 | if (ret <= 0) goto end; | |
519 | s->state=SSL3_ST_CW_FINISHED_A; | |
520 | break; | |
521 | #endif | |
522 | ||
d02b48c6 RE |
523 | case SSL3_ST_CW_FINISHED_A: |
524 | case SSL3_ST_CW_FINISHED_B: | |
525 | ret=ssl3_send_finished(s, | |
526 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
527 | s->method->ssl3_enc->client_finished_label, |
528 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
529 | if (ret <= 0) goto end; |
530 | s->state=SSL3_ST_CW_FLUSH; | |
531 | ||
532 | /* clear flags */ | |
533 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
534 | if (s->hit) | |
535 | { | |
536 | s->s3->tmp.next_state=SSL_ST_OK; | |
537 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
538 | { | |
539 | s->state=SSL_ST_OK; | |
540 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
541 | s->s3->delay_buf_pop_ret=0; | |
542 | } | |
543 | } | |
544 | else | |
545 | { | |
6434abbf DSH |
546 | #ifndef OPENSSL_NO_TLSEXT |
547 | /* Allow NewSessionTicket if ticket expected */ | |
548 | if (s->tlsext_ticket_expected) | |
549 | s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A; | |
550 | else | |
551 | #endif | |
552 | ||
d02b48c6 RE |
553 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; |
554 | } | |
555 | s->init_num=0; | |
556 | break; | |
557 | ||
6434abbf DSH |
558 | #ifndef OPENSSL_NO_TLSEXT |
559 | case SSL3_ST_CR_SESSION_TICKET_A: | |
560 | case SSL3_ST_CR_SESSION_TICKET_B: | |
561 | ret=ssl3_get_new_session_ticket(s); | |
446124a2 | 562 | if (ret <= 0) goto end; |
6434abbf DSH |
563 | s->state=SSL3_ST_CR_FINISHED_A; |
564 | s->init_num=0; | |
565 | break; | |
67c8e7f4 DSH |
566 | |
567 | case SSL3_ST_CR_CERT_STATUS_A: | |
568 | case SSL3_ST_CR_CERT_STATUS_B: | |
569 | ret=ssl3_get_cert_status(s); | |
570 | if (ret <= 0) goto end; | |
571 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
572 | s->init_num=0; | |
573 | break; | |
6434abbf DSH |
574 | #endif |
575 | ||
d02b48c6 RE |
576 | case SSL3_ST_CR_FINISHED_A: |
577 | case SSL3_ST_CR_FINISHED_B: | |
578 | ||
579 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, | |
58964a49 | 580 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
581 | if (ret <= 0) goto end; |
582 | ||
583 | if (s->hit) | |
584 | s->state=SSL3_ST_CW_CHANGE_A; | |
585 | else | |
586 | s->state=SSL_ST_OK; | |
587 | s->init_num=0; | |
588 | break; | |
589 | ||
590 | case SSL3_ST_CW_FLUSH: | |
d5e7f2f2 DSH |
591 | s->rwstate=SSL_WRITING; |
592 | if (BIO_flush(s->wbio) <= 0) | |
d02b48c6 | 593 | { |
d5e7f2f2 DSH |
594 | ret= -1; |
595 | goto end; | |
d02b48c6 | 596 | } |
d5e7f2f2 | 597 | s->rwstate=SSL_NOTHING; |
d02b48c6 RE |
598 | s->state=s->s3->tmp.next_state; |
599 | break; | |
600 | ||
601 | case SSL_ST_OK: | |
602 | /* clean a few things up */ | |
603 | ssl3_cleanup_key_block(s); | |
604 | ||
413c4f45 | 605 | if (s->init_buf != NULL) |
d02b48c6 | 606 | { |
413c4f45 MC |
607 | BUF_MEM_free(s->init_buf); |
608 | s->init_buf=NULL; | |
d02b48c6 | 609 | } |
413c4f45 MC |
610 | |
611 | /* If we are not 'joining' the last two packets, | |
612 | * remove the buffering now */ | |
613 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
614 | ssl_free_wbio_buffer(s); | |
615 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
616 | |
617 | s->init_num=0; | |
44959ee4 | 618 | s->renegotiate=0; |
d02b48c6 RE |
619 | s->new_session=0; |
620 | ||
621 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 622 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
623 | |
624 | ret=1; | |
625 | /* s->server=0; */ | |
626 | s->handshake_func=ssl3_connect; | |
413c4f45 | 627 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
628 | |
629 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
630 | ||
631 | goto end; | |
dfeab068 | 632 | /* break; */ |
d02b48c6 RE |
633 | |
634 | default: | |
635 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
636 | ret= -1; | |
637 | goto end; | |
638 | /* break; */ | |
639 | } | |
640 | ||
641 | /* did we do anything */ | |
642 | if (!s->s3->tmp.reuse_message && !skip) | |
643 | { | |
58964a49 RE |
644 | if (s->debug) |
645 | { | |
646 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
647 | goto end; | |
648 | } | |
d02b48c6 RE |
649 | |
650 | if ((cb != NULL) && (s->state != state)) | |
651 | { | |
652 | new_state=s->state; | |
653 | s->state=state; | |
654 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
655 | s->state=new_state; | |
656 | } | |
657 | } | |
658 | skip=0; | |
659 | } | |
660 | end: | |
4d635a70 | 661 | s->in_handshake--; |
8d6ad9e3 RL |
662 | if (buf != NULL) |
663 | BUF_MEM_free(buf); | |
d02b48c6 RE |
664 | if (cb != NULL) |
665 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
d02b48c6 RE |
666 | return(ret); |
667 | } | |
668 | ||
669 | ||
36d16f8e | 670 | int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
671 | { |
672 | unsigned char *buf; | |
673 | unsigned char *p,*d; | |
09b6c2ef | 674 | int i; |
d02b48c6 | 675 | unsigned long Time,l; |
09b6c2ef DSH |
676 | #ifndef OPENSSL_NO_COMP |
677 | int j; | |
413c4f45 | 678 | SSL_COMP *comp; |
09b6c2ef | 679 | #endif |
d02b48c6 RE |
680 | |
681 | buf=(unsigned char *)s->init_buf->data; | |
682 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
683 | { | |
213f08a6 DSH |
684 | SSL_SESSION *sess = s->session; |
685 | if ((sess == NULL) || | |
686 | (sess->ssl_version != s->version) || | |
687 | #ifdef OPENSSL_NO_TLSEXT | |
688 | !sess->session_id_length || | |
689 | #else | |
690 | (!sess->session_id_length && !sess->tlsext_tick) || | |
691 | #endif | |
692 | (sess->not_resumable)) | |
d02b48c6 RE |
693 | { |
694 | if (!ssl_get_new_session(s,0)) | |
695 | goto err; | |
696 | } | |
697 | /* else use the pre-loaded session */ | |
698 | ||
699 | p=s->s3->client_random; | |
7bbcb2f6 | 700 | Time=(unsigned long)time(NULL); /* Time */ |
d02b48c6 | 701 | l2n(Time,p); |
7c7667b8 NL |
702 | if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0) |
703 | goto err; | |
d02b48c6 RE |
704 | |
705 | /* Do the message type and length last */ | |
706 | d=p= &(buf[4]); | |
707 | ||
f4e11693 DSH |
708 | /* version indicates the negotiated version: for example from |
709 | * an SSLv2/v3 compatible client hello). The client_version | |
710 | * field is the maximum version we permit and it is also | |
711 | * used in RSA encrypted premaster secrets. Some servers can | |
712 | * choke if we initially report a higher version then | |
713 | * renegotiate to a lower one in the premaster secret. This | |
714 | * didn't happen with TLS 1.0 as most servers supported it | |
715 | * but it can with TLS 1.1 or later if the server only supports | |
716 | * 1.0. | |
717 | * | |
718 | * Possible scenario with previous logic: | |
719 | * 1. Client hello indicates TLS 1.2 | |
720 | * 2. Server hello says TLS 1.0 | |
721 | * 3. RSA encrypted premaster secret uses 1.2. | |
722 | * 4. Handhaked proceeds using TLS 1.0. | |
723 | * 5. Server sends hello request to renegotiate. | |
724 | * 6. Client hello indicates TLS v1.0 as we now | |
725 | * know that is maximum server supports. | |
726 | * 7. Server chokes on RSA encrypted premaster secret | |
727 | * containing version 1.0. | |
728 | * | |
729 | * For interoperability it should be OK to always use the | |
730 | * maximum version we support in client hello and then rely | |
731 | * on the checking of version to ensure the servers isn't | |
732 | * being inconsistent: for example initially negotiating with | |
733 | * TLS 1.0 and renegotiating with TLS 1.2. We do this by using | |
734 | * client_version in client hello and not resetting it to | |
735 | * the negotiated version. | |
736 | */ | |
737 | #if 0 | |
58964a49 RE |
738 | *(p++)=s->version>>8; |
739 | *(p++)=s->version&0xff; | |
413c4f45 | 740 | s->client_version=s->version; |
f4e11693 DSH |
741 | #else |
742 | *(p++)=s->client_version>>8; | |
743 | *(p++)=s->client_version&0xff; | |
744 | #endif | |
d02b48c6 RE |
745 | |
746 | /* Random stuff */ | |
747 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
748 | p+=SSL3_RANDOM_SIZE; | |
749 | ||
750 | /* Session ID */ | |
751 | if (s->new_session) | |
752 | i=0; | |
753 | else | |
754 | i=s->session->session_id_length; | |
755 | *(p++)=i; | |
756 | if (i != 0) | |
757 | { | |
27545970 | 758 | if (i > (int)sizeof(s->session->session_id)) |
5574e0ed BM |
759 | { |
760 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
761 | goto err; | |
762 | } | |
d02b48c6 RE |
763 | memcpy(p,s->session->session_id,i); |
764 | p+=i; | |
765 | } | |
766 | ||
767 | /* Ciphers supported */ | |
c6c2e313 | 768 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0); |
d02b48c6 RE |
769 | if (i == 0) |
770 | { | |
771 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
772 | goto err; | |
773 | } | |
800e1cd9 DSH |
774 | #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH |
775 | /* Some servers hang if client hello > 256 bytes | |
776 | * as hack workaround chop number of supported ciphers | |
777 | * to keep it well below this if we use TLS v1.2 | |
778 | */ | |
779 | if (TLS1_get_version(s) >= TLS1_2_VERSION | |
780 | && i > OPENSSL_MAX_TLS1_2_CIPHER_LENGTH) | |
781 | i = OPENSSL_MAX_TLS1_2_CIPHER_LENGTH & ~1; | |
782 | #endif | |
d02b48c6 RE |
783 | s2n(i,p); |
784 | p+=i; | |
785 | ||
dfeab068 | 786 | /* COMPRESSION */ |
09b6c2ef DSH |
787 | #ifdef OPENSSL_NO_COMP |
788 | *(p++)=1; | |
789 | #else | |
566dda07 DSH |
790 | |
791 | if ((s->options & SSL_OP_NO_COMPRESSION) | |
792 | || !s->ctx->comp_methods) | |
413c4f45 MC |
793 | j=0; |
794 | else | |
f73e07cf | 795 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
796 | *(p++)=1+j; |
797 | for (i=0; i<j; i++) | |
798 | { | |
f73e07cf | 799 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
800 | *(p++)=comp->id; |
801 | } | |
09b6c2ef | 802 | #endif |
413c4f45 | 803 | *(p++)=0; /* Add the NULL method */ |
761772d7 | 804 | |
ed3883d2 | 805 | #ifndef OPENSSL_NO_TLSEXT |
761772d7 | 806 | /* TLS extensions*/ |
36ca4ba6 BM |
807 | if (ssl_prepare_clienthello_tlsext(s) <= 0) |
808 | { | |
809 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT); | |
810 | goto err; | |
811 | } | |
f1fd4544 BM |
812 | if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL) |
813 | { | |
ed3883d2 BM |
814 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR); |
815 | goto err; | |
f1fd4544 | 816 | } |
ed3883d2 | 817 | #endif |
d02b48c6 RE |
818 | |
819 | l=(p-d); | |
820 | d=buf; | |
821 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
822 | l2n3(l,d); | |
823 | ||
824 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
825 | /* number of bytes to write */ | |
826 | s->init_num=p-buf; | |
827 | s->init_off=0; | |
828 | } | |
829 | ||
830 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
831 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
832 | err: | |
833 | return(-1); | |
834 | } | |
835 | ||
36d16f8e | 836 | int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 837 | { |
f73e07cf | 838 | STACK_OF(SSL_CIPHER) *sk; |
babb3798 | 839 | const SSL_CIPHER *c; |
b7bfe69b | 840 | CERT *ct = s->cert; |
d02b48c6 | 841 | unsigned char *p,*d; |
09e4e4b9 | 842 | int i,al=SSL_AD_INTERNAL_ERROR,ok; |
d02b48c6 RE |
843 | unsigned int j; |
844 | long n; | |
09b6c2ef | 845 | #ifndef OPENSSL_NO_COMP |
413c4f45 | 846 | SSL_COMP *comp; |
09b6c2ef | 847 | #endif |
d02b48c6 | 848 | |
36d16f8e | 849 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
850 | SSL3_ST_CR_SRVR_HELLO_A, |
851 | SSL3_ST_CR_SRVR_HELLO_B, | |
36d16f8e | 852 | -1, |
6434abbf | 853 | 20000, /* ?? */ |
d02b48c6 RE |
854 | &ok); |
855 | ||
856 | if (!ok) return((int)n); | |
36d16f8e | 857 | |
8711efb4 | 858 | if ( SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER) |
36d16f8e BL |
859 | { |
860 | if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) | |
861 | { | |
862 | if ( s->d1->send_cookie == 0) | |
863 | { | |
864 | s->s3->tmp.reuse_message = 1; | |
865 | return 1; | |
866 | } | |
867 | else /* already sent a cookie */ | |
868 | { | |
869 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 870 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
871 | goto f_err; |
872 | } | |
873 | } | |
874 | } | |
875 | ||
876 | if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) | |
877 | { | |
878 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 879 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
880 | goto f_err; |
881 | } | |
882 | ||
48948d53 | 883 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 884 | |
58964a49 | 885 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
886 | { |
887 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
888 | s->version=(s->version&0xff00)|p[1]; |
889 | al=SSL_AD_PROTOCOL_VERSION; | |
890 | goto f_err; | |
d02b48c6 RE |
891 | } |
892 | p+=2; | |
893 | ||
894 | /* load the server hello data */ | |
895 | /* load the server random */ | |
896 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
897 | p+=SSL3_RANDOM_SIZE; | |
898 | ||
899 | /* get the session-id */ | |
900 | j= *(p++); | |
901 | ||
a4f53a1c | 902 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 903 | { |
a4f53a1c BM |
904 | al=SSL_AD_ILLEGAL_PARAMETER; |
905 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
906 | goto f_err; | |
d02b48c6 | 907 | } |
54a656ef | 908 | |
12bf56c0 DSH |
909 | #ifndef OPENSSL_NO_TLSEXT |
910 | /* check if we want to resume the session based on external pre-shared secret */ | |
911 | if (s->version >= TLS1_VERSION && s->tls_session_secret_cb) | |
912 | { | |
913 | SSL_CIPHER *pref_cipher=NULL; | |
914 | s->session->master_key_length=sizeof(s->session->master_key); | |
915 | if (s->tls_session_secret_cb(s, s->session->master_key, | |
916 | &s->session->master_key_length, | |
917 | NULL, &pref_cipher, | |
918 | s->tls_session_secret_cb_arg)) | |
919 | { | |
920 | s->session->cipher = pref_cipher ? | |
921 | pref_cipher : ssl_get_cipher_by_char(s, p+j); | |
922 | } | |
923 | } | |
924 | #endif /* OPENSSL_NO_TLSEXT */ | |
925 | ||
b4cadc6e BL |
926 | if (j != 0 && j == s->session->session_id_length |
927 | && memcmp(p,s->session->session_id,j) == 0) | |
928 | { | |
929 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
930 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
931 | { | |
a4f53a1c | 932 | /* actually a client application bug */ |
b4cadc6e BL |
933 | al=SSL_AD_ILLEGAL_PARAMETER; |
934 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
935 | goto f_err; | |
936 | } | |
937 | s->hit=1; | |
938 | } | |
58964a49 | 939 | else /* a miss or crap from the other end */ |
d02b48c6 | 940 | { |
58964a49 RE |
941 | /* If we were trying for session-id reuse, make a new |
942 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 943 | s->hit=0; |
58964a49 RE |
944 | if (s->session->session_id_length > 0) |
945 | { | |
946 | if (!ssl_get_new_session(s,0)) | |
947 | { | |
58964a49 RE |
948 | goto f_err; |
949 | } | |
950 | } | |
951 | s->session->session_id_length=j; | |
952 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
953 | } |
954 | p+=j; | |
955 | c=ssl_get_cipher_by_char(s,p); | |
956 | if (c == NULL) | |
957 | { | |
958 | /* unknown cipher */ | |
58964a49 | 959 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
960 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
961 | goto f_err; | |
962 | } | |
b7bfe69b DSH |
963 | /* If it is a disabled cipher we didn't send it in client hello, |
964 | * so return an error. | |
965 | */ | |
966 | if (c->algorithm_ssl & ct->mask_ssl || | |
967 | c->algorithm_mkey & ct->mask_k || | |
968 | c->algorithm_auth & ct->mask_a) | |
d09677ac DSH |
969 | { |
970 | al=SSL_AD_ILLEGAL_PARAMETER; | |
971 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); | |
972 | goto f_err; | |
973 | } | |
d02b48c6 RE |
974 | p+=ssl_put_cipher_by_char(s,NULL,NULL); |
975 | ||
976 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 977 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
978 | if (i < 0) |
979 | { | |
980 | /* we did not say we would use this cipher */ | |
58964a49 | 981 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
982 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
983 | goto f_err; | |
984 | } | |
985 | ||
6a8afe22 LJ |
986 | /* Depending on the session caching (internal/external), the cipher |
987 | and/or cipher_id values may not be set. Make sure that | |
988 | cipher_id is set and use it for comparison. */ | |
989 | if (s->session->cipher) | |
990 | s->session->cipher_id = s->session->cipher->id; | |
c5662053 | 991 | if (s->hit && (s->session->cipher_id != c->id)) |
d02b48c6 | 992 | { |
88f2a4cf BM |
993 | /* Workaround is now obsolete */ |
994 | #if 0 | |
58964a49 | 995 | if (!(s->options & |
d02b48c6 | 996 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
88f2a4cf | 997 | #endif |
d02b48c6 | 998 | { |
58964a49 | 999 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1000 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
1001 | goto f_err; | |
1002 | } | |
1003 | } | |
1004 | s->s3->tmp.new_cipher=c; | |
855a54a9 DSH |
1005 | /* Don't digest cached records if TLS v1.2: we may need them for |
1006 | * client authentication. | |
1007 | */ | |
238b6361 | 1008 | if (TLS1_get_version(s) < TLS1_2_VERSION && !ssl3_digest_cached_records(s)) |
6ba71a71 | 1009 | goto f_err; |
d02b48c6 | 1010 | /* lets get the compression algorithm */ |
dfeab068 | 1011 | /* COMPRESSION */ |
09b6c2ef DSH |
1012 | #ifdef OPENSSL_NO_COMP |
1013 | if (*(p++) != 0) | |
1014 | { | |
1015 | al=SSL_AD_ILLEGAL_PARAMETER; | |
1016 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
1017 | goto f_err; | |
1018 | } | |
2be3d6eb DSH |
1019 | /* If compression is disabled we'd better not try to resume a session |
1020 | * using compression. | |
1021 | */ | |
1022 | if (s->session->compress_meth != 0) | |
1023 | { | |
2be3d6eb DSH |
1024 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_INCONSISTENT_COMPRESSION); |
1025 | goto f_err; | |
1026 | } | |
09b6c2ef | 1027 | #else |
d02b48c6 | 1028 | j= *(p++); |
dd792d62 | 1029 | if (s->hit && j != s->session->compress_meth) |
2be3d6eb DSH |
1030 | { |
1031 | al=SSL_AD_ILLEGAL_PARAMETER; | |
1032 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED); | |
1033 | goto f_err; | |
1034 | } | |
1035 | if (j == 0) | |
413c4f45 | 1036 | comp=NULL; |
2be3d6eb DSH |
1037 | else if (s->options & SSL_OP_NO_COMPRESSION) |
1038 | { | |
1039 | al=SSL_AD_ILLEGAL_PARAMETER; | |
1040 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_COMPRESSION_DISABLED); | |
1041 | goto f_err; | |
1042 | } | |
413c4f45 MC |
1043 | else |
1044 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
1045 | ||
1046 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 1047 | { |
58964a49 | 1048 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1049 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
1050 | goto f_err; | |
1051 | } | |
413c4f45 MC |
1052 | else |
1053 | { | |
1054 | s->s3->tmp.new_compression=comp; | |
1055 | } | |
09b6c2ef | 1056 | #endif |
761772d7 | 1057 | |
ed3883d2 BM |
1058 | #ifndef OPENSSL_NO_TLSEXT |
1059 | /* TLS extensions*/ | |
09e4e4b9 | 1060 | if (!ssl_parse_serverhello_tlsext(s,&p,d,n)) |
f1fd4544 | 1061 | { |
09e4e4b9 DSH |
1062 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLSEXT); |
1063 | goto err; | |
ed3883d2 | 1064 | } |
ed3883d2 | 1065 | #endif |
d02b48c6 RE |
1066 | |
1067 | if (p != (d+n)) | |
1068 | { | |
1069 | /* wrong packet length */ | |
58964a49 | 1070 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1071 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
f3d781bb | 1072 | goto f_err; |
d02b48c6 RE |
1073 | } |
1074 | ||
1075 | return(1); | |
1076 | f_err: | |
1077 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1078 | err: | |
1079 | return(-1); | |
1080 | } | |
1081 | ||
36d16f8e | 1082 | int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
1083 | { |
1084 | int al,i,ok,ret= -1; | |
1085 | unsigned long n,nc,llen,l; | |
1086 | X509 *x=NULL; | |
875a644a RL |
1087 | const unsigned char *q,*p; |
1088 | unsigned char *d; | |
f73e07cf | 1089 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 1090 | SESS_CERT *sc; |
d02b48c6 | 1091 | EVP_PKEY *pkey=NULL; |
57376542 | 1092 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 | 1093 | |
36d16f8e | 1094 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1095 | SSL3_ST_CR_CERT_A, |
1096 | SSL3_ST_CR_CERT_B, | |
1097 | -1, | |
c0f5dd07 | 1098 | s->max_cert_list, |
d02b48c6 RE |
1099 | &ok); |
1100 | ||
1101 | if (!ok) return((int)n); | |
1102 | ||
c1ca9d32 | 1103 | if ((s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) || |
2b13f803 | 1104 | ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5) && |
c1ca9d32 | 1105 | (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE))) |
d02b48c6 RE |
1106 | { |
1107 | s->s3->tmp.reuse_message=1; | |
1108 | return(1); | |
1109 | } | |
1110 | ||
1111 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
1112 | { | |
58964a49 | 1113 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
1114 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
1115 | goto f_err; | |
1116 | } | |
875a644a | 1117 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1118 | |
f73e07cf | 1119 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
1120 | { |
1121 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1122 | goto err; | |
1123 | } | |
1124 | ||
1125 | n2l3(p,llen); | |
1126 | if (llen+3 != n) | |
1127 | { | |
58964a49 | 1128 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1129 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
1130 | goto f_err; | |
1131 | } | |
1132 | for (nc=0; nc<llen; ) | |
1133 | { | |
1134 | n2l3(p,l); | |
1135 | if ((l+nc+3) > llen) | |
1136 | { | |
58964a49 | 1137 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1138 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1139 | goto f_err; | |
1140 | } | |
1141 | ||
1142 | q=p; | |
1143 | x=d2i_X509(NULL,&q,l); | |
1144 | if (x == NULL) | |
1145 | { | |
58964a49 | 1146 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
1147 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
1148 | goto f_err; | |
1149 | } | |
1150 | if (q != (p+l)) | |
1151 | { | |
58964a49 | 1152 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1153 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
1154 | goto f_err; | |
1155 | } | |
f73e07cf | 1156 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
1157 | { |
1158 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
1159 | goto err; | |
1160 | } | |
1161 | x=NULL; | |
1162 | nc+=l+3; | |
1163 | p=q; | |
1164 | } | |
1165 | ||
1166 | i=ssl_verify_cert_chain(s,sk); | |
bab53405 | 1167 | if ((s->verify_mode != SSL_VERIFY_NONE) && (i <= 0) |
82d5d46c | 1168 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 BM |
1169 | && !((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
1170 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
82d5d46c | 1171 | #endif /* OPENSSL_NO_KRB5 */ |
52b8dad8 | 1172 | ) |
d02b48c6 RE |
1173 | { |
1174 | al=ssl_verify_alarm_type(s->verify_result); | |
1175 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
1176 | goto f_err; | |
1177 | } | |
1fab73ac | 1178 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 1179 | |
b56bce4f BM |
1180 | sc=ssl_sess_cert_new(); |
1181 | if (sc == NULL) goto err; | |
d02b48c6 | 1182 | |
b56bce4f BM |
1183 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
1184 | s->session->sess_cert=sc; | |
d02b48c6 | 1185 | |
b56bce4f | 1186 | sc->cert_chain=sk; |
98e04f9e BM |
1187 | /* Inconsistency alert: cert_chain does include the peer's |
1188 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 1189 | x=sk_X509_value(sk,0); |
d02b48c6 | 1190 | sk=NULL; |
2a1ef754 | 1191 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
1192 | |
1193 | pkey=X509_get_pubkey(x); | |
1194 | ||
57376542 | 1195 | /* VRS: allow null cert if auth == KRB5 */ |
52b8dad8 BM |
1196 | need_cert = ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_kKRB5) && |
1197 | (s->s3->tmp.new_cipher->algorithm_auth & SSL_aKRB5)) | |
1198 | ? 0 : 1; | |
f9b3bff6 RL |
1199 | |
1200 | #ifdef KSSL_DEBUG | |
6343829a | 1201 | printf("pkey,x = %p, %p\n", pkey,x); |
f9b3bff6 | 1202 | printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); |
52b8dad8 BM |
1203 | printf("cipher, alg, nc = %s, %lx, %lx, %d\n", s->s3->tmp.new_cipher->name, |
1204 | s->s3->tmp.new_cipher->algorithm_mkey, s->s3->tmp.new_cipher->algorithm_auth, need_cert); | |
f9b3bff6 RL |
1205 | #endif /* KSSL_DEBUG */ |
1206 | ||
2a1ef754 | 1207 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
1208 | { |
1209 | x=NULL; | |
1210 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
1211 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
1212 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
1213 | goto f_err; |
1214 | } | |
1215 | ||
1216 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 1217 | if (need_cert && i < 0) |
d02b48c6 RE |
1218 | { |
1219 | x=NULL; | |
1220 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
1221 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
1222 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
1223 | goto f_err; |
1224 | } | |
1225 | ||
57376542 BM |
1226 | if (need_cert) |
1227 | { | |
1228 | sc->peer_cert_type=i; | |
1229 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1230 | /* Why would the following ever happen? | |
1231 | * We just created sc a couple of lines ago. */ | |
1232 | if (sc->peer_pkeys[i].x509 != NULL) | |
1233 | X509_free(sc->peer_pkeys[i].x509); | |
1234 | sc->peer_pkeys[i].x509=x; | |
1235 | sc->peer_key= &(sc->peer_pkeys[i]); | |
1236 | ||
1237 | if (s->session->peer != NULL) | |
1238 | X509_free(s->session->peer); | |
1239 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
1240 | s->session->peer=x; | |
1241 | } | |
1242 | else | |
1243 | { | |
1244 | sc->peer_cert_type=i; | |
1245 | sc->peer_key= NULL; | |
1246 | ||
1247 | if (s->session->peer != NULL) | |
1248 | X509_free(s->session->peer); | |
1249 | s->session->peer=NULL; | |
1250 | } | |
0dd2254d | 1251 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
1252 | |
1253 | x=NULL; | |
a9e1c50b BL |
1254 | #ifndef OPENSSL_NO_TLSEXT |
1255 | /* Check the audit proof. */ | |
1256 | if (s->ctx->tlsext_authz_server_audit_proof_cb) | |
1257 | { | |
1258 | ret = s->ctx->tlsext_authz_server_audit_proof_cb(s, | |
1259 | s->ctx->tlsext_authz_server_audit_proof_cb_arg); | |
1260 | if (ret <= 0) | |
1261 | { | |
1262 | al = SSL_AD_BAD_CERTIFICATE; | |
1263 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_INVALID_AUDIT_PROOF); | |
1264 | goto f_err; | |
1265 | } | |
1266 | } | |
d02b48c6 | 1267 | |
a9e1c50b BL |
1268 | #endif |
1269 | ret=1; | |
d02b48c6 RE |
1270 | if (0) |
1271 | { | |
1272 | f_err: | |
1273 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1274 | } | |
1275 | err: | |
a8236c8c DSH |
1276 | EVP_PKEY_free(pkey); |
1277 | X509_free(x); | |
f73e07cf | 1278 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
1279 | return(ret); |
1280 | } | |
1281 | ||
36d16f8e | 1282 | int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 1283 | { |
bc36ee62 | 1284 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1285 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
1286 | #endif | |
1287 | EVP_MD_CTX md_ctx; | |
1288 | unsigned char *param,*p; | |
1289 | int al,i,j,param_len,ok; | |
52b8dad8 | 1290 | long n,alg_k,alg_a; |
d02b48c6 | 1291 | EVP_PKEY *pkey=NULL; |
a2f9200f | 1292 | const EVP_MD *md = NULL; |
bc36ee62 | 1293 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1294 | RSA *rsa=NULL; |
79df9d62 | 1295 | #endif |
bc36ee62 | 1296 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 1297 | DH *dh=NULL; |
58964a49 | 1298 | #endif |
ea262260 BM |
1299 | #ifndef OPENSSL_NO_ECDH |
1300 | EC_KEY *ecdh = NULL; | |
1301 | BN_CTX *bn_ctx = NULL; | |
1302 | EC_POINT *srvr_ecpoint = NULL; | |
1303 | int curve_nid = 0; | |
1304 | int encoded_pt_len = 0; | |
1305 | #endif | |
d02b48c6 | 1306 | |
37a7cd1a BM |
1307 | /* use same message size as in ssl3_get_certificate_request() |
1308 | * as ServerKeyExchange message may be skipped */ | |
36d16f8e | 1309 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1310 | SSL3_ST_CR_KEY_EXCH_A, |
1311 | SSL3_ST_CR_KEY_EXCH_B, | |
1312 | -1, | |
c0f5dd07 | 1313 | s->max_cert_list, |
d02b48c6 | 1314 | &ok); |
d02b48c6 RE |
1315 | if (!ok) return((int)n); |
1316 | ||
1317 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
1318 | { | |
ddac1974 NL |
1319 | #ifndef OPENSSL_NO_PSK |
1320 | /* In plain PSK ciphersuite, ServerKeyExchange can be | |
1321 | omitted if no identity hint is sent. Set | |
1322 | session->sess_cert anyway to avoid problems | |
1323 | later.*/ | |
52b8dad8 | 1324 | if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK) |
ddac1974 NL |
1325 | { |
1326 | s->session->sess_cert=ssl_sess_cert_new(); | |
1327 | if (s->ctx->psk_identity_hint) | |
1328 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1329 | s->ctx->psk_identity_hint = NULL; | |
1330 | } | |
1331 | #endif | |
d02b48c6 RE |
1332 | s->s3->tmp.reuse_message=1; |
1333 | return(1); | |
1334 | } | |
1335 | ||
48948d53 | 1336 | param=p=(unsigned char *)s->init_msg; |
9d5cceac | 1337 | if (s->session->sess_cert != NULL) |
d02b48c6 | 1338 | { |
bc36ee62 | 1339 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1340 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1341 | { |
b56bce4f BM |
1342 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1343 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1344 | } |
1345 | #endif | |
bc36ee62 | 1346 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1347 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1348 | { |
b56bce4f BM |
1349 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1350 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1351 | } |
ea262260 BM |
1352 | #endif |
1353 | #ifndef OPENSSL_NO_ECDH | |
1354 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1355 | { | |
1356 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1357 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1358 | } | |
d02b48c6 RE |
1359 | #endif |
1360 | } | |
1361 | else | |
1362 | { | |
b56bce4f | 1363 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1364 | } |
1365 | ||
1366 | param_len=0; | |
52b8dad8 BM |
1367 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
1368 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
dbad1690 | 1369 | EVP_MD_CTX_init(&md_ctx); |
d02b48c6 | 1370 | |
ddac1974 | 1371 | #ifndef OPENSSL_NO_PSK |
52b8dad8 BM |
1372 | if (alg_k & SSL_kPSK) |
1373 | { | |
ddac1974 NL |
1374 | char tmp_id_hint[PSK_MAX_IDENTITY_LEN+1]; |
1375 | ||
1376 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1377 | n2s(p,i); | |
1378 | param_len=i+2; | |
1379 | /* Store PSK identity hint for later use, hint is used | |
1380 | * in ssl3_send_client_key_exchange. Assume that the | |
1381 | * maximum length of a PSK identity hint can be as | |
1382 | * long as the maximum length of a PSK identity. */ | |
1383 | if (i > PSK_MAX_IDENTITY_LEN) | |
1384 | { | |
1385 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1386 | SSL_R_DATA_LENGTH_TOO_LONG); | |
1387 | goto f_err; | |
1388 | } | |
1389 | if (param_len > n) | |
1390 | { | |
1391 | al=SSL_AD_DECODE_ERROR; | |
1392 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, | |
1393 | SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH); | |
1394 | goto f_err; | |
1395 | } | |
1396 | /* If received PSK identity hint contains NULL | |
1397 | * characters, the hint is truncated from the first | |
1398 | * NULL. p may not be ending with NULL, so create a | |
1399 | * NULL-terminated string. */ | |
1400 | memcpy(tmp_id_hint, p, i); | |
1401 | memset(tmp_id_hint+i, 0, PSK_MAX_IDENTITY_LEN+1-i); | |
1402 | if (s->ctx->psk_identity_hint != NULL) | |
1403 | OPENSSL_free(s->ctx->psk_identity_hint); | |
1404 | s->ctx->psk_identity_hint = BUF_strdup(tmp_id_hint); | |
1405 | if (s->ctx->psk_identity_hint == NULL) | |
1406 | { | |
1407 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); | |
1408 | goto f_err; | |
52b8dad8 | 1409 | } |
ddac1974 NL |
1410 | |
1411 | p+=i; | |
1412 | n-=param_len; | |
1413 | } | |
1414 | else | |
1415 | #endif /* !OPENSSL_NO_PSK */ | |
edc032b5 BL |
1416 | #ifndef OPENSSL_NO_SRP |
1417 | if (alg_k & SSL_kSRP) | |
1418 | { | |
1419 | n2s(p,i); | |
1420 | param_len=i+2; | |
1421 | if (param_len > n) | |
1422 | { | |
1423 | al=SSL_AD_DECODE_ERROR; | |
1424 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_N_LENGTH); | |
1425 | goto f_err; | |
1426 | } | |
1427 | if (!(s->srp_ctx.N=BN_bin2bn(p,i,NULL))) | |
1428 | { | |
1429 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1430 | goto err; | |
1431 | } | |
1432 | p+=i; | |
1433 | ||
1434 | n2s(p,i); | |
1435 | param_len+=i+2; | |
1436 | if (param_len > n) | |
1437 | { | |
1438 | al=SSL_AD_DECODE_ERROR; | |
1439 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_G_LENGTH); | |
1440 | goto f_err; | |
1441 | } | |
1442 | if (!(s->srp_ctx.g=BN_bin2bn(p,i,NULL))) | |
1443 | { | |
1444 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1445 | goto err; | |
1446 | } | |
1447 | p+=i; | |
1448 | ||
1449 | i = (unsigned int)(p[0]); | |
1450 | p++; | |
1451 | param_len+=i+1; | |
1452 | if (param_len > n) | |
1453 | { | |
1454 | al=SSL_AD_DECODE_ERROR; | |
1455 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_S_LENGTH); | |
1456 | goto f_err; | |
1457 | } | |
1458 | if (!(s->srp_ctx.s=BN_bin2bn(p,i,NULL))) | |
1459 | { | |
1460 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1461 | goto err; | |
1462 | } | |
1463 | p+=i; | |
1464 | ||
1465 | n2s(p,i); | |
1466 | param_len+=i+2; | |
1467 | if (param_len > n) | |
1468 | { | |
1469 | al=SSL_AD_DECODE_ERROR; | |
1470 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SRP_B_LENGTH); | |
1471 | goto f_err; | |
1472 | } | |
1473 | if (!(s->srp_ctx.B=BN_bin2bn(p,i,NULL))) | |
1474 | { | |
1475 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1476 | goto err; | |
1477 | } | |
1478 | p+=i; | |
1479 | n-=param_len; | |
1480 | ||
1481 | /* We must check if there is a certificate */ | |
1482 | #ifndef OPENSSL_NO_RSA | |
1483 | if (alg_a & SSL_aRSA) | |
1484 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); | |
1485 | #else | |
1486 | if (0) | |
1487 | ; | |
1488 | #endif | |
1489 | #ifndef OPENSSL_NO_DSA | |
1490 | else if (alg_a & SSL_aDSS) | |
1491 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); | |
1492 | #endif | |
1493 | } | |
1494 | else | |
1495 | #endif /* !OPENSSL_NO_SRP */ | |
bc36ee62 | 1496 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1497 | if (alg_k & SSL_kRSA) |
d02b48c6 RE |
1498 | { |
1499 | if ((rsa=RSA_new()) == NULL) | |
1500 | { | |
1501 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1502 | goto err; | |
1503 | } | |
1504 | n2s(p,i); | |
1505 | param_len=i+2; | |
1506 | if (param_len > n) | |
1507 | { | |
58964a49 | 1508 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1509 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1510 | goto f_err; | |
1511 | } | |
1512 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
1513 | { | |
1514 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1515 | goto err; | |
1516 | } | |
1517 | p+=i; | |
1518 | ||
1519 | n2s(p,i); | |
1520 | param_len+=i+2; | |
1521 | if (param_len > n) | |
1522 | { | |
58964a49 | 1523 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1524 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1525 | goto f_err; | |
1526 | } | |
1527 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
1528 | { | |
1529 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1530 | goto err; | |
1531 | } | |
1532 | p+=i; | |
1533 | n-=param_len; | |
1534 | ||
d02b48c6 | 1535 | /* this should be because we are using an export cipher */ |
52b8dad8 | 1536 | if (alg_a & SSL_aRSA) |
b56bce4f | 1537 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1538 | else |
1539 | { | |
5277d7cb | 1540 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1541 | goto err; |
1542 | } | |
b56bce4f | 1543 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1544 | rsa=NULL; |
d02b48c6 | 1545 | } |
bc36ee62 | 1546 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1547 | if (0) |
1548 | ; | |
d02b48c6 | 1549 | #endif |
bc36ee62 | 1550 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 1551 | else if (alg_k & SSL_kEDH) |
d02b48c6 RE |
1552 | { |
1553 | if ((dh=DH_new()) == NULL) | |
1554 | { | |
1555 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1556 | goto err; | |
1557 | } | |
1558 | n2s(p,i); | |
1559 | param_len=i+2; | |
1560 | if (param_len > n) | |
1561 | { | |
58964a49 | 1562 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1563 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1564 | goto f_err; | |
1565 | } | |
1566 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
1567 | { | |
1568 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1569 | goto err; | |
1570 | } | |
1571 | p+=i; | |
1572 | ||
1573 | n2s(p,i); | |
1574 | param_len+=i+2; | |
1575 | if (param_len > n) | |
1576 | { | |
58964a49 | 1577 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1578 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1579 | goto f_err; | |
1580 | } | |
1581 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
1582 | { | |
1583 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1584 | goto err; | |
1585 | } | |
1586 | p+=i; | |
1587 | ||
1588 | n2s(p,i); | |
1589 | param_len+=i+2; | |
1590 | if (param_len > n) | |
1591 | { | |
58964a49 | 1592 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1593 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1594 | goto f_err; | |
1595 | } | |
1596 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
1597 | { | |
1598 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1599 | goto err; | |
1600 | } | |
1601 | p+=i; | |
1602 | n-=param_len; | |
1603 | ||
bc36ee62 | 1604 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 1605 | if (alg_a & SSL_aRSA) |
b56bce4f | 1606 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1607 | #else |
1608 | if (0) | |
1609 | ; | |
d02b48c6 | 1610 | #endif |
bc36ee62 | 1611 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 1612 | else if (alg_a & SSL_aDSS) |
b56bce4f | 1613 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1614 | #endif |
1615 | /* else anonymous DH, so no certificate or pkey. */ | |
1616 | ||
b56bce4f | 1617 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1618 | dh=NULL; |
d02b48c6 | 1619 | } |
52b8dad8 | 1620 | else if ((alg_k & SSL_kDHr) || (alg_k & SSL_kDHd)) |
d02b48c6 | 1621 | { |
58964a49 | 1622 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1623 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1624 | goto f_err; | |
1625 | } | |
bc36ee62 | 1626 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1627 | |
1628 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 1629 | else if (alg_k & SSL_kEECDH) |
ea262260 | 1630 | { |
9dd84053 NL |
1631 | EC_GROUP *ngroup; |
1632 | const EC_GROUP *group; | |
1633 | ||
ea262260 BM |
1634 | if ((ecdh=EC_KEY_new()) == NULL) |
1635 | { | |
1636 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1637 | goto err; | |
1638 | } | |
1639 | ||
1640 | /* Extract elliptic curve parameters and the | |
1641 | * server's ephemeral ECDH public key. | |
1642 | * Keep accumulating lengths of various components in | |
1643 | * param_len and make sure it never exceeds n. | |
1644 | */ | |
1645 | ||
1646 | /* XXX: For now we only support named (not generic) curves | |
d56349a2 | 1647 | * and the ECParameters in this case is just three bytes. |
ea262260 | 1648 | */ |
d56349a2 | 1649 | param_len=3; |
ea262260 BM |
1650 | if ((param_len > n) || |
1651 | (*p != NAMED_CURVE_TYPE) || | |
33273721 | 1652 | ((curve_nid = tls1_ec_curve_id2nid(*(p + 2))) == 0)) |
ea262260 BM |
1653 | { |
1654 | al=SSL_AD_INTERNAL_ERROR; | |
1655 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1656 | goto f_err; | |
1657 | } | |
1658 | ||
9dd84053 NL |
1659 | ngroup = EC_GROUP_new_by_curve_name(curve_nid); |
1660 | if (ngroup == NULL) | |
1661 | { | |
1662 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1663 | goto err; | |
1664 | } | |
1665 | if (EC_KEY_set_group(ecdh, ngroup) == 0) | |
ea262260 BM |
1666 | { |
1667 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1668 | goto err; | |
1669 | } | |
9dd84053 NL |
1670 | EC_GROUP_free(ngroup); |
1671 | ||
1672 | group = EC_KEY_get0_group(ecdh); | |
ea262260 BM |
1673 | |
1674 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
9dd84053 | 1675 | (EC_GROUP_get_degree(group) > 163)) |
ea262260 BM |
1676 | { |
1677 | al=SSL_AD_EXPORT_RESTRICTION; | |
1678 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1679 | goto f_err; | |
1680 | } | |
1681 | ||
d56349a2 | 1682 | p+=3; |
ea262260 BM |
1683 | |
1684 | /* Next, get the encoded ECPoint */ | |
9dd84053 | 1685 | if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) || |
ea262260 BM |
1686 | ((bn_ctx = BN_CTX_new()) == NULL)) |
1687 | { | |
1688 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1689 | goto err; | |
1690 | } | |
1691 | ||
1692 | encoded_pt_len = *p; /* length of encoded point */ | |
1693 | p+=1; | |
1694 | param_len += (1 + encoded_pt_len); | |
1695 | if ((param_len > n) || | |
9dd84053 | 1696 | (EC_POINT_oct2point(group, srvr_ecpoint, |
ea262260 BM |
1697 | p, encoded_pt_len, bn_ctx) == 0)) |
1698 | { | |
1699 | al=SSL_AD_DECODE_ERROR; | |
1700 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); | |
1701 | goto f_err; | |
1702 | } | |
1703 | ||
1704 | n-=param_len; | |
1705 | p+=encoded_pt_len; | |
1706 | ||
1707 | /* The ECC/TLS specification does not mention | |
1708 | * the use of DSA to sign ECParameters in the server | |
1709 | * key exchange message. We do support RSA and ECDSA. | |
1710 | */ | |
1711 | if (0) ; | |
1712 | #ifndef OPENSSL_NO_RSA | |
52b8dad8 | 1713 | else if (alg_a & SSL_aRSA) |
ea262260 BM |
1714 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
1715 | #endif | |
1716 | #ifndef OPENSSL_NO_ECDSA | |
52b8dad8 | 1717 | else if (alg_a & SSL_aECDSA) |
ea262260 BM |
1718 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); |
1719 | #endif | |
1720 | /* else anonymous ECDH, so no certificate or pkey. */ | |
9dd84053 | 1721 | EC_KEY_set_public_key(ecdh, srvr_ecpoint); |
ea262260 BM |
1722 | s->session->sess_cert->peer_ecdh_tmp=ecdh; |
1723 | ecdh=NULL; | |
1724 | BN_CTX_free(bn_ctx); | |
57594258 | 1725 | bn_ctx = NULL; |
9dd84053 | 1726 | EC_POINT_free(srvr_ecpoint); |
ea262260 BM |
1727 | srvr_ecpoint = NULL; |
1728 | } | |
52b8dad8 | 1729 | else if (alg_k) |
ea262260 BM |
1730 | { |
1731 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1732 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1733 | goto f_err; | |
1734 | } | |
1735 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 | 1736 | |
d02b48c6 RE |
1737 | |
1738 | /* p points to the next byte, there are 'n' bytes left */ | |
1739 | ||
d02b48c6 RE |
1740 | /* if it was signed, check the signature */ |
1741 | if (pkey != NULL) | |
1742 | { | |
238b6361 | 1743 | if (TLS1_get_version(s) >= TLS1_2_VERSION) |
a2f9200f DSH |
1744 | { |
1745 | int sigalg = tls12_get_sigid(pkey); | |
1746 | /* Should never happen */ | |
1747 | if (sigalg == -1) | |
1748 | { | |
1749 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); | |
1750 | goto err; | |
1751 | } | |
1752 | /* Check key type is consistent with signature */ | |
1753 | if (sigalg != (int)p[1]) | |
1754 | { | |
1755 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_TYPE); | |
1756 | al=SSL_AD_DECODE_ERROR; | |
1757 | goto f_err; | |
1758 | } | |
1759 | md = tls12_get_hash(p[0]); | |
1760 | if (md == NULL) | |
1761 | { | |
1762 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNKNOWN_DIGEST); | |
1763 | al=SSL_AD_DECODE_ERROR; | |
1764 | goto f_err; | |
1765 | } | |
1766 | #ifdef SSL_DEBUG | |
1767 | fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md)); | |
1768 | #endif | |
1769 | p += 2; | |
1770 | n -= 2; | |
1771 | } | |
1772 | else | |
1773 | md = EVP_sha1(); | |
1774 | ||
d02b48c6 RE |
1775 | n2s(p,i); |
1776 | n-=2; | |
1777 | j=EVP_PKEY_size(pkey); | |
1778 | ||
1779 | if ((i != n) || (n > j) || (n <= 0)) | |
1780 | { | |
1781 | /* wrong packet length */ | |
58964a49 | 1782 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1783 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1784 | goto f_err; |
d02b48c6 RE |
1785 | } |
1786 | ||
bc36ee62 | 1787 | #ifndef OPENSSL_NO_RSA |
238b6361 | 1788 | if (pkey->type == EVP_PKEY_RSA && TLS1_get_version(s) < TLS1_2_VERSION) |
d02b48c6 RE |
1789 | { |
1790 | int num; | |
1791 | ||
1792 | j=0; | |
1793 | q=md_buf; | |
1794 | for (num=2; num > 0; num--) | |
1795 | { | |
086e32a6 DSH |
1796 | EVP_MD_CTX_set_flags(&md_ctx, |
1797 | EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); | |
20d2186c DSH |
1798 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1799 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1800 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1801 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1802 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
20d2186c | 1803 | EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i); |
d02b48c6 RE |
1804 | q+=i; |
1805 | j+=i; | |
1806 | } | |
1c80019a DSH |
1807 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1808 | pkey->pkey.rsa); | |
1809 | if (i < 0) | |
d02b48c6 | 1810 | { |
58964a49 | 1811 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1812 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1813 | goto f_err; | |
1814 | } | |
1c80019a | 1815 | if (i == 0) |
d02b48c6 RE |
1816 | { |
1817 | /* bad signature */ | |
58964a49 | 1818 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1819 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1820 | goto f_err; | |
1821 | } | |
1822 | } | |
1823 | else | |
1824 | #endif | |
ea262260 | 1825 | { |
a2f9200f | 1826 | EVP_VerifyInit_ex(&md_ctx, md, NULL); |
ea262260 BM |
1827 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1828 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1829 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
bab53405 | 1830 | if (EVP_VerifyFinal(&md_ctx,p,(int)n,pkey) <= 0) |
ea262260 BM |
1831 | { |
1832 | /* bad signature */ | |
1833 | al=SSL_AD_DECRYPT_ERROR; | |
1834 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1835 | goto f_err; | |
1836 | } | |
1837 | } | |
d02b48c6 RE |
1838 | } |
1839 | else | |
1840 | { | |
52b8dad8 | 1841 | if (!(alg_a & SSL_aNULL) && !(alg_k & SSL_kPSK)) |
ddac1974 | 1842 | /* aNULL or kPSK do not need public keys */ |
d02b48c6 | 1843 | { |
5277d7cb | 1844 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1845 | goto err; |
1846 | } | |
ddac1974 | 1847 | /* still data left over */ |
d02b48c6 RE |
1848 | if (n != 0) |
1849 | { | |
58964a49 | 1850 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1851 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1852 | goto f_err; | |
1853 | } | |
1854 | } | |
a8236c8c | 1855 | EVP_PKEY_free(pkey); |
dbad1690 | 1856 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1857 | return(1); |
1858 | f_err: | |
1859 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1860 | err: | |
a8236c8c | 1861 | EVP_PKEY_free(pkey); |
bc36ee62 | 1862 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1863 | if (rsa != NULL) |
1864 | RSA_free(rsa); | |
1865 | #endif | |
bc36ee62 | 1866 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1867 | if (dh != NULL) |
1868 | DH_free(dh); | |
ea262260 BM |
1869 | #endif |
1870 | #ifndef OPENSSL_NO_ECDH | |
1871 | BN_CTX_free(bn_ctx); | |
1872 | EC_POINT_free(srvr_ecpoint); | |
1873 | if (ecdh != NULL) | |
1874 | EC_KEY_free(ecdh); | |
6b521df3 | 1875 | #endif |
dbad1690 | 1876 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1877 | return(-1); |
1878 | } | |
1879 | ||
36d16f8e | 1880 | int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1881 | { |
1882 | int ok,ret=0; | |
58964a49 | 1883 | unsigned long n,nc,l; |
8f829124 | 1884 | unsigned int llen, ctype_num,i; |
d02b48c6 | 1885 | X509_NAME *xn=NULL; |
875a644a RL |
1886 | const unsigned char *p,*q; |
1887 | unsigned char *d; | |
f73e07cf | 1888 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 | 1889 | |
36d16f8e | 1890 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1891 | SSL3_ST_CR_CERT_REQ_A, |
1892 | SSL3_ST_CR_CERT_REQ_B, | |
1893 | -1, | |
c0f5dd07 | 1894 | s->max_cert_list, |
d02b48c6 RE |
1895 | &ok); |
1896 | ||
1897 | if (!ok) return((int)n); | |
1898 | ||
1899 | s->s3->tmp.cert_req=0; | |
1900 | ||
1901 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1902 | { | |
1903 | s->s3->tmp.reuse_message=1; | |
855a54a9 DSH |
1904 | /* If we get here we don't need any cached handshake records |
1905 | * as we wont be doing client auth. | |
1906 | */ | |
1907 | if (s->s3->handshake_buffer) | |
1908 | { | |
1909 | if (!ssl3_digest_cached_records(s)) | |
1910 | goto err; | |
1911 | } | |
d02b48c6 RE |
1912 | return(1); |
1913 | } | |
1914 | ||
1915 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1916 | { | |
58964a49 | 1917 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1918 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1919 | goto err; | |
1920 | } | |
1921 | ||
58964a49 RE |
1922 | /* TLS does not like anon-DH with client cert */ |
1923 | if (s->version > SSL3_VERSION) | |
1924 | { | |
52b8dad8 | 1925 | if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) |
58964a49 RE |
1926 | { |
1927 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1928 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1929 | goto err; | |
1930 | } | |
1931 | } | |
1932 | ||
875a644a | 1933 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1934 | |
f73e07cf | 1935 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1936 | { |
1937 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1938 | goto err; | |
1939 | } | |
1940 | ||
1941 | /* get the certificate types */ | |
1942 | ctype_num= *(p++); | |
9f27b1ee DSH |
1943 | if (s->cert->ctypes) |
1944 | { | |
1945 | OPENSSL_free(s->cert->ctypes); | |
1946 | s->cert->ctypes = NULL; | |
1947 | } | |
d02b48c6 | 1948 | if (ctype_num > SSL3_CT_NUMBER) |
9f27b1ee DSH |
1949 | { |
1950 | /* If we exceed static buffer copy all to cert structure */ | |
1951 | s->cert->ctypes = OPENSSL_malloc(ctype_num); | |
1952 | memcpy(s->cert->ctypes, p, ctype_num); | |
1953 | s->cert->ctype_num = (size_t)ctype_num; | |
d02b48c6 | 1954 | ctype_num=SSL3_CT_NUMBER; |
9f27b1ee | 1955 | } |
d02b48c6 RE |
1956 | for (i=0; i<ctype_num; i++) |
1957 | s->s3->tmp.ctype[i]= p[i]; | |
9f27b1ee | 1958 | p+=p[-1]; |
238b6361 | 1959 | if (TLS1_get_version(s) >= TLS1_2_VERSION) |
a2f9200f | 1960 | { |
8f829124 DSH |
1961 | n2s(p, llen); |
1962 | /* Check we have enough room for signature algorithms and | |
1963 | * following length value. | |
1964 | */ | |
1965 | if ((unsigned long)(p - d + llen + 2) > n) | |
1966 | { | |
1967 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); | |
1968 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_DATA_LENGTH_TOO_LONG); | |
1969 | goto err; | |
1970 | } | |
1971 | if ((llen & 1) || !tls1_process_sigalgs(s, p, llen)) | |
1972 | { | |
1973 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); | |
1974 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_SIGNATURE_ALGORITHMS_ERROR); | |
1975 | goto err; | |
1976 | } | |
1977 | p += llen; | |
a2f9200f | 1978 | } |
d02b48c6 RE |
1979 | |
1980 | /* get the CA RDNs */ | |
1981 | n2s(p,llen); | |
dfeab068 RE |
1982 | #if 0 |
1983 | { | |
1984 | FILE *out; | |
1985 | out=fopen("/tmp/vsign.der","w"); | |
1986 | fwrite(p,1,llen,out); | |
1987 | fclose(out); | |
1988 | } | |
1989 | #endif | |
1990 | ||
8f829124 | 1991 | if ((unsigned long)(p - d + llen) != n) |
d02b48c6 | 1992 | { |
58964a49 | 1993 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1994 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1995 | goto err; | |
1996 | } | |
1997 | ||
1998 | for (nc=0; nc<llen; ) | |
1999 | { | |
2000 | n2s(p,l); | |
2001 | if ((l+nc+2) > llen) | |
2002 | { | |
58964a49 | 2003 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 2004 | goto cont; /* netscape bugs */ |
58964a49 | 2005 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2006 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
2007 | goto err; | |
2008 | } | |
2009 | ||
2010 | q=p; | |
2011 | ||
2012 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
2013 | { | |
657e60fa | 2014 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 2015 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
2016 | goto cont; |
2017 | else | |
2018 | { | |
58964a49 | 2019 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2020 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
2021 | goto err; | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | if (q != (p+l)) | |
2026 | { | |
58964a49 | 2027 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
2028 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
2029 | goto err; | |
2030 | } | |
f73e07cf | 2031 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
2032 | { |
2033 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
2034 | goto err; | |
2035 | } | |
2036 | ||
2037 | p+=l; | |
2038 | nc+=l+2; | |
2039 | } | |
2040 | ||
2041 | if (0) | |
2042 | { | |
2043 | cont: | |
2044 | ERR_clear_error(); | |
2045 | } | |
2046 | ||
657e60fa | 2047 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
2048 | s->s3->tmp.cert_req=1; |
2049 | s->s3->tmp.ctype_num=ctype_num; | |
2050 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 2051 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
2052 | s->s3->tmp.ca_names=ca_sk; |
2053 | ca_sk=NULL; | |
2054 | ||
2055 | ret=1; | |
2056 | err: | |
f73e07cf | 2057 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
2058 | return(ret); |
2059 | } | |
2060 | ||
ccd86b68 | 2061 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
2062 | { |
2063 | return(X509_NAME_cmp(*a,*b)); | |
2064 | } | |
6434abbf DSH |
2065 | #ifndef OPENSSL_NO_TLSEXT |
2066 | int ssl3_get_new_session_ticket(SSL *s) | |
2067 | { | |
2068 | int ok,al,ret=0, ticklen; | |
2069 | long n; | |
2070 | const unsigned char *p; | |
2071 | unsigned char *d; | |
2072 | ||
2073 | n=s->method->ssl_get_message(s, | |
2074 | SSL3_ST_CR_SESSION_TICKET_A, | |
2075 | SSL3_ST_CR_SESSION_TICKET_B, | |
2076 | -1, | |
2077 | 16384, | |
2078 | &ok); | |
2079 | ||
2080 | if (!ok) | |
2081 | return((int)n); | |
2082 | ||
2083 | if (s->s3->tmp.message_type == SSL3_MT_FINISHED) | |
2084 | { | |
2085 | s->s3->tmp.reuse_message=1; | |
2086 | return(1); | |
2087 | } | |
2088 | if (s->s3->tmp.message_type != SSL3_MT_NEWSESSION_TICKET) | |
2089 | { | |
2090 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
2091 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_BAD_MESSAGE_TYPE); | |
2092 | goto f_err; | |
2093 | } | |
2094 | if (n < 6) | |
2095 | { | |
2096 | /* need at least ticket_lifetime_hint + ticket length */ | |
f3d781bb | 2097 | al = SSL_AD_DECODE_ERROR; |
6434abbf DSH |
2098 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); |
2099 | goto f_err; | |
2100 | } | |
8025e251 | 2101 | |
6434abbf DSH |
2102 | p=d=(unsigned char *)s->init_msg; |
2103 | n2l(p, s->session->tlsext_tick_lifetime_hint); | |
2104 | n2s(p, ticklen); | |
2105 | /* ticket_lifetime_hint + ticket_length + ticket */ | |
2106 | if (ticklen + 6 != n) | |
2107 | { | |
f3d781bb | 2108 | al = SSL_AD_DECODE_ERROR; |
761772d7 | 2109 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,SSL_R_LENGTH_MISMATCH); |
6434abbf DSH |
2110 | goto f_err; |
2111 | } | |
2112 | if (s->session->tlsext_tick) | |
2113 | { | |
2114 | OPENSSL_free(s->session->tlsext_tick); | |
2115 | s->session->tlsext_ticklen = 0; | |
2116 | } | |
2117 | s->session->tlsext_tick = OPENSSL_malloc(ticklen); | |
2118 | if (!s->session->tlsext_tick) | |
2119 | { | |
761772d7 | 2120 | SSLerr(SSL_F_SSL3_GET_NEW_SESSION_TICKET,ERR_R_MALLOC_FAILURE); |
6434abbf DSH |
2121 | goto err; |
2122 | } | |
2123 | memcpy(s->session->tlsext_tick, p, ticklen); | |
2124 | s->session->tlsext_ticklen = ticklen; | |
4b4ba6a8 DSH |
2125 | /* There are two ways to detect a resumed ticket sesion. |
2126 | * One is to set an appropriate session ID and then the server | |
2127 | * must return a match in ServerHello. This allows the normal | |
2128 | * client session ID matching to work and we know much | |
2129 | * earlier that the ticket has been accepted. | |
2130 | * | |
2131 | * The other way is to set zero length session ID when the | |
2132 | * ticket is presented and rely on the handshake to determine | |
2133 | * session resumption. | |
2134 | * | |
2135 | * We choose the former approach because this fits in with | |
2136 | * assumptions elsewhere in OpenSSL. The session ID is set | |
2137 | * to the SHA256 (or SHA1 is SHA256 is disabled) hash of the | |
2138 | * ticket. | |
2139 | */ | |
2140 | EVP_Digest(p, ticklen, | |
2141 | s->session->session_id, &s->session->session_id_length, | |
2142 | #ifndef OPENSSL_NO_SHA256 | |
2143 | EVP_sha256(), NULL); | |
2144 | #else | |
2145 | EVP_sha1(), NULL); | |
2146 | #endif | |
6434abbf DSH |
2147 | ret=1; |
2148 | return(ret); | |
2149 | f_err: | |
2150 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
2151 | err: | |
2152 | return(-1); | |
2153 | } | |
67c8e7f4 DSH |
2154 | |
2155 | int ssl3_get_cert_status(SSL *s) | |
2156 | { | |
2157 | int ok, al; | |
aff686df | 2158 | unsigned long resplen,n; |
67c8e7f4 DSH |
2159 | const unsigned char *p; |
2160 | ||
2161 | n=s->method->ssl_get_message(s, | |
2162 | SSL3_ST_CR_CERT_STATUS_A, | |
2163 | SSL3_ST_CR_CERT_STATUS_B, | |
2164 | SSL3_MT_CERTIFICATE_STATUS, | |
2165 | 16384, | |
2166 | &ok); | |
2167 | ||
2168 | if (!ok) return((int)n); | |
2169 | if (n < 4) | |
2170 | { | |
2171 | /* need at least status type + length */ | |
2172 | al = SSL_AD_DECODE_ERROR; | |
2173 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); | |
2174 | goto f_err; | |
2175 | } | |
2176 | p = (unsigned char *)s->init_msg; | |
2177 | if (*p++ != TLSEXT_STATUSTYPE_ocsp) | |
2178 | { | |
2179 | al = SSL_AD_DECODE_ERROR; | |
2180 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_UNSUPPORTED_STATUS_TYPE); | |
2181 | goto f_err; | |
2182 | } | |
2183 | n2l3(p, resplen); | |
2184 | if (resplen + 4 != n) | |
2185 | { | |
2186 | al = SSL_AD_DECODE_ERROR; | |
2187 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_LENGTH_MISMATCH); | |
2188 | goto f_err; | |
2189 | } | |
2190 | if (s->tlsext_ocsp_resp) | |
2191 | OPENSSL_free(s->tlsext_ocsp_resp); | |
2192 | s->tlsext_ocsp_resp = BUF_memdup(p, resplen); | |
2193 | if (!s->tlsext_ocsp_resp) | |
2194 | { | |
2195 | al = SSL_AD_INTERNAL_ERROR; | |
2196 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE); | |
2197 | goto f_err; | |
2198 | } | |
2199 | s->tlsext_ocsp_resplen = resplen; | |
2200 | if (s->ctx->tlsext_status_cb) | |
2201 | { | |
2202 | int ret; | |
2203 | ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg); | |
2204 | if (ret == 0) | |
2205 | { | |
2206 | al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE; | |
2207 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,SSL_R_INVALID_STATUS_RESPONSE); | |
2208 | goto f_err; | |
2209 | } | |
2210 | if (ret < 0) | |
2211 | { | |
2212 | al = SSL_AD_INTERNAL_ERROR; | |
2213 | SSLerr(SSL_F_SSL3_GET_CERT_STATUS,ERR_R_MALLOC_FAILURE); | |
2214 | goto f_err; | |
2215 | } | |
2216 | } | |
2217 | return 1; | |
2218 | f_err: | |
2219 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
2220 | return(-1); | |
2221 | } | |
6434abbf | 2222 | #endif |
d02b48c6 | 2223 | |
36d16f8e | 2224 | int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
2225 | { |
2226 | int ok,ret=0; | |
2227 | long n; | |
2228 | ||
36d16f8e | 2229 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
2230 | SSL3_ST_CR_SRVR_DONE_A, |
2231 | SSL3_ST_CR_SRVR_DONE_B, | |
2232 | SSL3_MT_SERVER_DONE, | |
2233 | 30, /* should be very small, like 0 :-) */ | |
2234 | &ok); | |
2235 | ||
2236 | if (!ok) return((int)n); | |
2237 | if (n > 0) | |
2238 | { | |
2239 | /* should contain no data */ | |
58964a49 | 2240 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 2241 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 2242 | return -1; |
d02b48c6 RE |
2243 | } |
2244 | ret=1; | |
2245 | return(ret); | |
2246 | } | |
2247 | ||
176f31dd | 2248 | |
36d16f8e | 2249 | int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 2250 | { |
79df9d62 | 2251 | unsigned char *p,*d; |
d02b48c6 | 2252 | int n; |
52b8dad8 | 2253 | unsigned long alg_k; |
bc36ee62 | 2254 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 2255 | unsigned char *q; |
d02b48c6 | 2256 | EVP_PKEY *pkey=NULL; |
79df9d62 | 2257 | #endif |
bc36ee62 | 2258 | #ifndef OPENSSL_NO_KRB5 |
57376542 | 2259 | KSSL_ERR kssl_err; |
bc36ee62 | 2260 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
2261 | #ifndef OPENSSL_NO_ECDH |
2262 | EC_KEY *clnt_ecdh = NULL; | |
9dd84053 | 2263 | const EC_POINT *srvr_ecpoint = NULL; |
ea262260 BM |
2264 | EVP_PKEY *srvr_pub_pkey = NULL; |
2265 | unsigned char *encodedPoint = NULL; | |
2266 | int encoded_pt_len = 0; | |
2267 | BN_CTX * bn_ctx = NULL; | |
2268 | #endif | |
d02b48c6 RE |
2269 | |
2270 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
2271 | { | |
2272 | d=(unsigned char *)s->init_buf->data; | |
2273 | p= &(d[4]); | |
2274 | ||
52b8dad8 | 2275 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
d02b48c6 | 2276 | |
57376542 BM |
2277 | /* Fool emacs indentation */ |
2278 | if (0) {} | |
bc36ee62 | 2279 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 2280 | else if (alg_k & SSL_kRSA) |
d02b48c6 RE |
2281 | { |
2282 | RSA *rsa; | |
dfeab068 | 2283 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 2284 | |
b56bce4f BM |
2285 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
2286 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
2287 | else |
2288 | { | |
b56bce4f | 2289 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
2290 | if ((pkey == NULL) || |
2291 | (pkey->type != EVP_PKEY_RSA) || | |
2292 | (pkey->pkey.rsa == NULL)) | |
2293 | { | |
5277d7cb | 2294 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2295 | goto err; |
2296 | } | |
2297 | rsa=pkey->pkey.rsa; | |
50596582 | 2298 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2299 | } |
2300 | ||
413c4f45 MC |
2301 | tmp_buf[0]=s->client_version>>8; |
2302 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 2303 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 2304 | goto err; |
d02b48c6 | 2305 | |
54a656ef | 2306 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 2307 | |
58964a49 RE |
2308 | q=p; |
2309 | /* Fix buf for TLS and beyond */ | |
2310 | if (s->version > SSL3_VERSION) | |
2311 | p+=2; | |
54a656ef | 2312 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 2313 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
2314 | #ifdef PKCS1_CHECK |
2315 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
2316 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
2317 | #endif | |
d02b48c6 RE |
2318 | if (n <= 0) |
2319 | { | |
2320 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
2321 | goto err; | |
2322 | } | |
2323 | ||
58964a49 RE |
2324 | /* Fix buf for TLS and beyond */ |
2325 | if (s->version > SSL3_VERSION) | |
2326 | { | |
2327 | s2n(n,q); | |
2328 | n+=2; | |
2329 | } | |
2330 | ||
d02b48c6 | 2331 | s->session->master_key_length= |
58964a49 | 2332 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 2333 | s->session->master_key, |
54a656ef | 2334 | tmp_buf,sizeof tmp_buf); |
4579924b | 2335 | OPENSSL_cleanse(tmp_buf,sizeof tmp_buf); |
d02b48c6 | 2336 | } |
f9b3bff6 | 2337 | #endif |
bc36ee62 | 2338 | #ifndef OPENSSL_NO_KRB5 |
52b8dad8 | 2339 | else if (alg_k & SSL_kKRB5) |
57376542 BM |
2340 | { |
2341 | krb5_error_code krb5rc; | |
2342 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
2343 | /* krb5_data krb5_ap_req; */ | |
2344 | krb5_data *enc_ticket; | |
2345 | krb5_data authenticator, *authp = NULL; | |
2a1ef754 | 2346 | EVP_CIPHER_CTX ciph_ctx; |
ef236ec3 | 2347 | const EVP_CIPHER *enc = NULL; |
2a1ef754 RL |
2348 | unsigned char iv[EVP_MAX_IV_LENGTH]; |
2349 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
2350 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
2351 | + EVP_MAX_IV_LENGTH]; | |
2352 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 2353 | |
de941e28 DSH |
2354 | EVP_CIPHER_CTX_init(&ciph_ctx); |
2355 | ||
f9b3bff6 | 2356 | #ifdef KSSL_DEBUG |
57376542 | 2357 | printf("ssl3_send_client_key_exchange(%lx & %lx)\n", |
7e69565f | 2358 | alg_k, SSL_kKRB5); |
f9b3bff6 RL |
2359 | #endif /* KSSL_DEBUG */ |
2360 | ||
2a1ef754 RL |
2361 | authp = NULL; |
2362 | #ifdef KRB5SENDAUTH | |
2363 | if (KRB5SENDAUTH) authp = &authenticator; | |
2364 | #endif /* KRB5SENDAUTH */ | |
2365 | ||
57376542 | 2366 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, |
2a1ef754 RL |
2367 | &kssl_err); |
2368 | enc = kssl_map_enc(kssl_ctx->enctype); | |
57376542 BM |
2369 | if (enc == NULL) |
2370 | goto err; | |
f9b3bff6 | 2371 | #ifdef KSSL_DEBUG |
57376542 BM |
2372 | { |
2373 | printf("kssl_cget_tkt rtn %d\n", krb5rc); | |
2374 | if (krb5rc && kssl_err.text) | |
2a1ef754 | 2375 | printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
57376542 | 2376 | } |
f9b3bff6 RL |
2377 | #endif /* KSSL_DEBUG */ |
2378 | ||
57376542 BM |
2379 | if (krb5rc) |
2380 | { | |
2381 | ssl3_send_alert(s,SSL3_AL_FATAL, | |
2a1ef754 | 2382 | SSL_AD_HANDSHAKE_FAILURE); |
57376542 | 2383 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2a1ef754 | 2384 | kssl_err.reason); |
57376542 BM |
2385 | goto err; |
2386 | } | |
f9b3bff6 | 2387 | |
2a1ef754 RL |
2388 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
2389 | ** in place of RFC 2712 KerberosWrapper, as in: | |
2390 | ** | |
57376542 BM |
2391 | ** Send ticket (copy to *p, set n = length) |
2392 | ** n = krb5_ap_req.length; | |
2393 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
2394 | ** if (krb5_ap_req.data) | |
2395 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
2396 | ** | |
2a1ef754 RL |
2397 | ** Now using real RFC 2712 KerberosWrapper |
2398 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
2399 | ** Note: 2712 "opaque" types are here replaced | |
2400 | ** with a 2-byte length followed by the value. | |
2401 | ** Example: | |
2402 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
2403 | ** Where "xx xx" = length bytes. Shown here with | |
2404 | ** optional authenticator omitted. | |
2405 | */ | |
2406 | ||
2407 | /* KerberosWrapper.Ticket */ | |
2408 | s2n(enc_ticket->length,p); | |
2409 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
2410 | p+= enc_ticket->length; | |
2411 | n = enc_ticket->length + 2; | |
2412 | ||
2413 | /* KerberosWrapper.Authenticator */ | |
2414 | if (authp && authp->length) | |
2415 | { | |
2416 | s2n(authp->length,p); | |
2417 | memcpy(p, authp->data, authp->length); | |
2418 | p+= authp->length; | |
2419 | n+= authp->length + 2; | |
2420 | ||
2421 | free(authp->data); | |
2422 | authp->data = NULL; | |
2423 | authp->length = 0; | |
2424 | } | |
2425 | else | |
2426 | { | |
2427 | s2n(0,p);/* null authenticator length */ | |
2428 | n+=2; | |
2429 | } | |
2430 | ||
cbb92dfa RL |
2431 | tmp_buf[0]=s->client_version>>8; |
2432 | tmp_buf[1]=s->client_version&0xff; | |
2433 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) | |
2434 | goto err; | |
2a1ef754 RL |
2435 | |
2436 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 2437 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
2438 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
2439 | ** kssl_ctx->length); | |
581f1c84 | 2440 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
2441 | */ |
2442 | ||
54a656ef | 2443 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
2444 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
2445 | kssl_ctx->key,iv); | |
2a1ef754 | 2446 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 2447 | sizeof tmp_buf); |
581f1c84 | 2448 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 2449 | outl += padl; |
ef236ec3 | 2450 | if (outl > (int)sizeof epms) |
5574e0ed BM |
2451 | { |
2452 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
2453 | goto err; | |
2454 | } | |
2a1ef754 RL |
2455 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
2456 | ||
2457 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
2458 | s2n(outl,p); | |
2459 | memcpy(p, epms, outl); | |
2460 | p+=outl; | |
2461 | n+=outl + 2; | |
2462 | ||
57376542 | 2463 | s->session->master_key_length= |
52b8dad8 | 2464 | s->method->ssl3_enc->generate_master_secret(s, |
2a1ef754 | 2465 | s->session->master_key, |
54a656ef | 2466 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 2467 | |
4579924b RL |
2468 | OPENSSL_cleanse(tmp_buf, sizeof tmp_buf); |
2469 | OPENSSL_cleanse(epms, outl); | |
57376542 | 2470 | } |
d02b48c6 | 2471 | #endif |
bc36ee62 | 2472 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 2473 | else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
2474 | { |
2475 | DH *dh_srvr,*dh_clnt; | |
8e1dc4d7 | 2476 | SESS_CERT *scert = s->session->sess_cert; |
d02b48c6 | 2477 | |
8e1dc4d7 | 2478 | if (scert == NULL) |
e194fe8f BM |
2479 | { |
2480 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
2481 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
2482 | goto err; | |
2483 | } | |
2484 | ||
8e1dc4d7 DSH |
2485 | if (scert->peer_dh_tmp != NULL) |
2486 | dh_srvr=scert->peer_dh_tmp; | |
d02b48c6 RE |
2487 | else |
2488 | { | |
2489 | /* we get them from the cert */ | |
8e1dc4d7 DSH |
2490 | int idx = scert->peer_cert_type; |
2491 | EVP_PKEY *spkey = NULL; | |
2492 | dh_srvr = NULL; | |
2493 | if (idx >= 0) | |
2494 | spkey = X509_get_pubkey( | |
2495 | scert->peer_pkeys[idx].x509); | |
2496 | if (spkey) | |
2497 | { | |
2498 | dh_srvr = EVP_PKEY_get1_DH(spkey); | |
2499 | EVP_PKEY_free(spkey); | |
2500 | } | |
2501 | if (dh_srvr == NULL) | |
2502 | { | |
2503 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2504 | ERR_R_INTERNAL_ERROR); | |
2505 | goto err; | |
2506 | } | |
d02b48c6 | 2507 | } |
0d609395 | 2508 | if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) |
d02b48c6 | 2509 | { |
0d609395 DSH |
2510 | /* Use client certificate key */ |
2511 | EVP_PKEY *clkey = s->cert->key->privatekey; | |
08e4ea48 | 2512 | dh_clnt = NULL; |
0d609395 DSH |
2513 | if (clkey) |
2514 | dh_clnt = EVP_PKEY_get1_DH(clkey); | |
2515 | if (dh_clnt == NULL) | |
2516 | { | |
2517 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2518 | ERR_R_INTERNAL_ERROR); | |
2519 | goto err; | |
2520 | } | |
d02b48c6 | 2521 | } |
0d609395 | 2522 | else |
d02b48c6 | 2523 | { |
0d609395 DSH |
2524 | /* generate a new random key */ |
2525 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
2526 | { | |
2527 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
2528 | goto err; | |
2529 | } | |
2530 | if (!DH_generate_key(dh_clnt)) | |
2531 | { | |
2532 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
2533 | DH_free(dh_clnt); | |
2534 | goto err; | |
2535 | } | |
d02b48c6 RE |
2536 | } |
2537 | ||
2538 | /* use the 'p' output buffer for the DH key, but | |
2539 | * make sure to clear it out afterwards */ | |
58964a49 | 2540 | |
d02b48c6 | 2541 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
8e1dc4d7 DSH |
2542 | if (scert->peer_dh_tmp == NULL) |
2543 | DH_free(dh_srvr); | |
58964a49 | 2544 | |
d02b48c6 RE |
2545 | if (n <= 0) |
2546 | { | |
2547 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
ca933576 | 2548 | DH_free(dh_clnt); |
d02b48c6 RE |
2549 | goto err; |
2550 | } | |
2551 | ||
2552 | /* generate master key from the result */ | |
2553 | s->session->master_key_length= | |
58964a49 | 2554 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
2555 | s->session->master_key,p,n); |
2556 | /* clean up */ | |
2557 | memset(p,0,n); | |
2558 | ||
0d609395 DSH |
2559 | if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) |
2560 | n = 0; | |
2561 | else | |
2562 | { | |
2563 | /* send off the data */ | |
2564 | n=BN_num_bytes(dh_clnt->pub_key); | |
2565 | s2n(n,p); | |
2566 | BN_bn2bin(dh_clnt->pub_key,p); | |
2567 | n+=2; | |
2568 | } | |
d02b48c6 RE |
2569 | |
2570 | DH_free(dh_clnt); | |
2571 | ||
2572 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
2573 | } | |
d02b48c6 | 2574 | #endif |
ea262260 BM |
2575 | |
2576 | #ifndef OPENSSL_NO_ECDH | |
52b8dad8 | 2577 | else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe)) |
ea262260 | 2578 | { |
9dd84053 NL |
2579 | const EC_GROUP *srvr_group = NULL; |
2580 | EC_KEY *tkey; | |
ea262260 | 2581 | int ecdh_clnt_cert = 0; |
968766ca | 2582 | int field_size = 0; |
ea262260 BM |
2583 | |
2584 | /* Did we send out the client's | |
2585 | * ECDH share for use in premaster | |
2586 | * computation as part of client certificate? | |
2587 | * If so, set ecdh_clnt_cert to 1. | |
2588 | */ | |
52b8dad8 | 2589 | if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL)) |
ea262260 BM |
2590 | { |
2591 | /* XXX: For now, we do not support client | |
2592 | * authentication using ECDH certificates. | |
2593 | * To add such support, one needs to add | |
2594 | * code that checks for appropriate | |
2595 | * conditions and sets ecdh_clnt_cert to 1. | |
2596 | * For example, the cert have an ECC | |
2597 | * key on the same curve as the server's | |
2598 | * and the key should be authorized for | |
2599 | * key agreement. | |
2600 | * | |
2601 | * One also needs to add code in ssl3_connect | |
2602 | * to skip sending the certificate verify | |
2603 | * message. | |
2604 | * | |
2605 | * if ((s->cert->key->privatekey != NULL) && | |
2606 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 2607 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
2608 | * ecdh_clnt_cert = 1; |
2609 | */ | |
2610 | } | |
2611 | ||
2612 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
2613 | { | |
9dd84053 | 2614 | tkey = s->session->sess_cert->peer_ecdh_tmp; |
ea262260 BM |
2615 | } |
2616 | else | |
2617 | { | |
2618 | /* Get the Server Public Key from Cert */ | |
2619 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
2620 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
2621 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 2622 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
9dd84053 | 2623 | (srvr_pub_pkey->pkey.ec == NULL)) |
ea262260 BM |
2624 | { |
2625 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2626 | ERR_R_INTERNAL_ERROR); | |
2627 | goto err; | |
2628 | } | |
2629 | ||
9dd84053 | 2630 | tkey = srvr_pub_pkey->pkey.ec; |
ea262260 BM |
2631 | } |
2632 | ||
9dd84053 NL |
2633 | srvr_group = EC_KEY_get0_group(tkey); |
2634 | srvr_ecpoint = EC_KEY_get0_public_key(tkey); | |
2635 | ||
ea262260 BM |
2636 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) |
2637 | { | |
2638 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2639 | ERR_R_INTERNAL_ERROR); | |
2640 | goto err; | |
2641 | } | |
2642 | ||
2643 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
2644 | { | |
2645 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2646 | goto err; | |
2647 | } | |
2648 | ||
9dd84053 NL |
2649 | if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) |
2650 | { | |
2651 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2652 | goto err; | |
2653 | } | |
ea262260 BM |
2654 | if (ecdh_clnt_cert) |
2655 | { | |
57376542 | 2656 | /* Reuse key info from our certificate |
ea262260 BM |
2657 | * We only need our private key to perform |
2658 | * the ECDH computation. | |
2659 | */ | |
9dd84053 NL |
2660 | const BIGNUM *priv_key; |
2661 | tkey = s->cert->key->privatekey->pkey.ec; | |
2662 | priv_key = EC_KEY_get0_private_key(tkey); | |
2663 | if (priv_key == NULL) | |
2664 | { | |
2665 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2666 | goto err; | |
2667 | } | |
2668 | if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) | |
2669 | { | |
2670 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2671 | goto err; | |
2672 | } | |
ea262260 BM |
2673 | } |
2674 | else | |
2675 | { | |
2676 | /* Generate a new ECDH key pair */ | |
2677 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
2678 | { | |
2679 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
2680 | goto err; | |
2681 | } | |
2682 | } | |
2683 | ||
57376542 BM |
2684 | /* use the 'p' output buffer for the ECDH key, but |
2685 | * make sure to clear it out afterwards | |
ea262260 BM |
2686 | */ |
2687 | ||
9dd84053 | 2688 | field_size = EC_GROUP_get_degree(srvr_group); |
968766ca BM |
2689 | if (field_size <= 0) |
2690 | { | |
2691 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2692 | ERR_R_ECDH_LIB); | |
2693 | goto err; | |
2694 | } | |
d56349a2 | 2695 | n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL); |
ea262260 | 2696 | if (n <= 0) |
57376542 BM |
2697 | { |
2698 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
ea262260 | 2699 | ERR_R_ECDH_LIB); |
57376542 | 2700 | goto err; |
ea262260 BM |
2701 | } |
2702 | ||
57376542 BM |
2703 | /* generate master key from the result */ |
2704 | s->session->master_key_length = s->method->ssl3_enc \ | |
ea262260 BM |
2705 | -> generate_master_secret(s, |
2706 | s->session->master_key, | |
2707 | p, n); | |
2708 | ||
57376542 | 2709 | memset(p, 0, n); /* clean up */ |
ea262260 BM |
2710 | |
2711 | if (ecdh_clnt_cert) | |
2712 | { | |
2713 | /* Send empty client key exch message */ | |
2714 | n = 0; | |
2715 | } | |
2716 | else | |
2717 | { | |
2718 | /* First check the size of encoding and | |
2719 | * allocate memory accordingly. | |
2720 | */ | |
2721 | encoded_pt_len = | |
9dd84053 NL |
2722 | EC_POINT_point2oct(srvr_group, |
2723 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2724 | POINT_CONVERSION_UNCOMPRESSED, |
2725 | NULL, 0, NULL); | |
2726 | ||
2727 | encodedPoint = (unsigned char *) | |
2728 | OPENSSL_malloc(encoded_pt_len * | |
2729 | sizeof(unsigned char)); | |
2730 | bn_ctx = BN_CTX_new(); | |
2731 | if ((encodedPoint == NULL) || | |
2732 | (bn_ctx == NULL)) | |
2733 | { | |
2734 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2735 | goto err; | |
2736 | } | |
2737 | ||
2738 | /* Encode the public key */ | |
9dd84053 NL |
2739 | n = EC_POINT_point2oct(srvr_group, |
2740 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2741 | POINT_CONVERSION_UNCOMPRESSED, |
2742 | encodedPoint, encoded_pt_len, bn_ctx); | |
2743 | ||
2744 | *p = n; /* length of encoded point */ | |
57376542 | 2745 | /* Encoded point will be copied here */ |
ea262260 BM |
2746 | p += 1; |
2747 | /* copy the point */ | |
2748 | memcpy((unsigned char *)p, encodedPoint, n); | |
2749 | /* increment n to account for length field */ | |
2750 | n += 1; | |
2751 | } | |
2752 | ||
2753 | /* Free allocated memory */ | |
2754 | BN_CTX_free(bn_ctx); | |
2755 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2756 | if (clnt_ecdh != NULL) | |
ea262260 | 2757 | EC_KEY_free(clnt_ecdh); |
ea262260 BM |
2758 | EVP_PKEY_free(srvr_pub_pkey); |
2759 | } | |
2760 | #endif /* !OPENSSL_NO_ECDH */ | |
0e1dba93 DSH |
2761 | else if (alg_k & SSL_kGOST) |
2762 | { | |
2763 | /* GOST key exchange message creation */ | |
2764 | EVP_PKEY_CTX *pkey_ctx; | |
2765 | X509 *peer_cert; | |
2766 | size_t msglen; | |
2767 | unsigned int md_len; | |
2768 | int keytype; | |
f0288f05 | 2769 | unsigned char premaster_secret[32],shared_ukm[32], tmp[256]; |
0e1dba93 DSH |
2770 | EVP_MD_CTX *ukm_hash; |
2771 | EVP_PKEY *pub_key; | |
2772 | ||
2773 | /* Get server sertificate PKEY and create ctx from it */ | |
2774 | peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST01)].x509; | |
2775 | if (!peer_cert) | |
2776 | peer_cert=s->session->sess_cert->peer_pkeys[(keytype=SSL_PKEY_GOST94)].x509; | |
2777 | if (!peer_cert) { | |
2778 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER); | |
2779 | goto err; | |
2780 | } | |
2781 | ||
2782 | pkey_ctx=EVP_PKEY_CTX_new(pub_key=X509_get_pubkey(peer_cert),NULL); | |
2783 | /* If we have send a certificate, and certificate key | |
2784 | ||
2785 | * parameters match those of server certificate, use | |
2786 | * certificate key for key exchange | |
2787 | */ | |
2788 | ||
2789 | /* Otherwise, generate ephemeral key pair */ | |
2790 | ||
2791 | EVP_PKEY_encrypt_init(pkey_ctx); | |
2792 | /* Generate session key */ | |
2793 | RAND_bytes(premaster_secret,32); | |
2794 | /* If we have client certificate, use its secret as peer key */ | |
f0288f05 DSH |
2795 | if (s->s3->tmp.cert_req && s->cert->key->privatekey) { |
2796 | if (EVP_PKEY_derive_set_peer(pkey_ctx,s->cert->key->privatekey) <=0) { | |
0e1dba93 DSH |
2797 | /* If there was an error - just ignore it. Ephemeral key |
2798 | * would be used | |
2799 | */ | |
2800 | ERR_clear_error(); | |
f0288f05 | 2801 | } |
0e1dba93 DSH |
2802 | } |
2803 | /* Compute shared IV and store it in algorithm-specific | |
2804 | * context data */ | |
2805 | ukm_hash = EVP_MD_CTX_create(); | |
2806 | EVP_DigestInit(ukm_hash,EVP_get_digestbynid(NID_id_GostR3411_94)); | |
2807 | EVP_DigestUpdate(ukm_hash,s->s3->client_random,SSL3_RANDOM_SIZE); | |
2808 | EVP_DigestUpdate(ukm_hash,s->s3->server_random,SSL3_RANDOM_SIZE); | |
2809 | EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len); | |
2810 | EVP_MD_CTX_destroy(ukm_hash); | |
2811 | if (EVP_PKEY_CTX_ctrl(pkey_ctx,-1,EVP_PKEY_OP_ENCRYPT,EVP_PKEY_CTRL_SET_IV, | |
2812 | 8,shared_ukm)<0) { | |
2813 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2814 | SSL_R_LIBRARY_BUG); | |
2815 | goto err; | |
2816 | } | |
2817 | /* Make GOST keytransport blob message */ | |
2818 | /*Encapsulate it into sequence */ | |
2819 | *(p++)=V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED; | |
f0288f05 DSH |
2820 | msglen=255; |
2821 | if (EVP_PKEY_encrypt(pkey_ctx,tmp,&msglen,premaster_secret,32)<0) { | |
0e1dba93 DSH |
2822 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2823 | SSL_R_LIBRARY_BUG); | |
2824 | goto err; | |
f0288f05 DSH |
2825 | } |
2826 | if (msglen >= 0x80) | |
2827 | { | |
2828 | *(p++)=0x81; | |
2829 | *(p++)= msglen & 0xff; | |
2830 | n=msglen+3; | |
2831 | } | |
2832 | else | |
2833 | { | |
2834 | *(p++)= msglen & 0xff; | |
2835 | n=msglen+2; | |
2836 | } | |
2837 | memcpy(p, tmp, msglen); | |
2838 | /* Check if pubkey from client certificate was used */ | |
2839 | if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, -1, EVP_PKEY_CTRL_PEER_KEY, 2, NULL) > 0) | |
2840 | { | |
2841 | /* Set flag "skip certificate verify" */ | |
2842 | s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY; | |
2843 | } | |
0e1dba93 DSH |
2844 | EVP_PKEY_CTX_free(pkey_ctx); |
2845 | s->session->master_key_length= | |
2846 | s->method->ssl3_enc->generate_master_secret(s, | |
2847 | s->session->master_key,premaster_secret,32); | |
2848 | EVP_PKEY_free(pub_key); | |
2849 | ||
2850 | } | |
edc032b5 BL |
2851 | #ifndef OPENSSL_NO_SRP |
2852 | else if (alg_k & SSL_kSRP) | |
2853 | { | |
2854 | if (s->srp_ctx.A != NULL) | |
2855 | { | |
2856 | /* send off the data */ | |
2857 | n=BN_num_bytes(s->srp_ctx.A); | |
2858 | s2n(n,p); | |
2859 | BN_bn2bin(s->srp_ctx.A,p); | |
2860 | n+=2; | |
2861 | } | |
2862 | else | |
2863 | { | |
2864 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); | |
2865 | goto err; | |
2866 | } | |
2867 | if (s->session->srp_username != NULL) | |
2868 | OPENSSL_free(s->session->srp_username); | |
2869 | s->session->srp_username = BUF_strdup(s->srp_ctx.login); | |
2870 | if (s->session->srp_username == NULL) | |
2871 | { | |
2872 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2873 | ERR_R_MALLOC_FAILURE); | |
2874 | goto err; | |
2875 | } | |
2876 | ||
2877 | if ((s->session->master_key_length = SRP_generate_client_master_secret(s,s->session->master_key))<0) | |
2878 | { | |
23bc7961 | 2879 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
edc032b5 BL |
2880 | goto err; |
2881 | } | |
2882 | } | |
2883 | #endif | |
ddac1974 | 2884 | #ifndef OPENSSL_NO_PSK |
52b8dad8 | 2885 | else if (alg_k & SSL_kPSK) |
ddac1974 NL |
2886 | { |
2887 | char identity[PSK_MAX_IDENTITY_LEN]; | |
2888 | unsigned char *t = NULL; | |
2889 | unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4]; | |
2890 | unsigned int pre_ms_len = 0, psk_len = 0; | |
2891 | int psk_err = 1; | |
2892 | ||
2893 | n = 0; | |
2894 | if (s->psk_client_callback == NULL) | |
2895 | { | |
2896 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2897 | SSL_R_PSK_NO_CLIENT_CB); | |
2898 | goto err; | |
2899 | } | |
2900 | ||
2901 | psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint, | |
2902 | identity, PSK_MAX_IDENTITY_LEN, | |
2903 | psk_or_pre_ms, sizeof(psk_or_pre_ms)); | |
2904 | if (psk_len > PSK_MAX_PSK_LEN) | |
2905 | { | |
2906 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2907 | ERR_R_INTERNAL_ERROR); | |
2908 | goto psk_err; | |
2909 | } | |
2910 | else if (psk_len == 0) | |
2911 | { | |
2912 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2913 | SSL_R_PSK_IDENTITY_NOT_FOUND); | |
2914 | goto psk_err; | |
2915 | } | |
2916 | ||
2917 | /* create PSK pre_master_secret */ | |
2918 | pre_ms_len = 2+psk_len+2+psk_len; | |
2919 | t = psk_or_pre_ms; | |
2920 | memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len); | |
2921 | s2n(psk_len, t); | |
2922 | memset(t, 0, psk_len); | |
2923 | t+=psk_len; | |
2924 | s2n(psk_len, t); | |
2925 | ||
2926 | if (s->session->psk_identity_hint != NULL) | |
2927 | OPENSSL_free(s->session->psk_identity_hint); | |
2928 | s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint); | |
2929 | if (s->ctx->psk_identity_hint != NULL && | |
2930 | s->session->psk_identity_hint == NULL) | |
2931 | { | |
2932 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2933 | ERR_R_MALLOC_FAILURE); | |
2934 | goto psk_err; | |
2935 | } | |
2936 | ||
2937 | if (s->session->psk_identity != NULL) | |
2938 | OPENSSL_free(s->session->psk_identity); | |
2939 | s->session->psk_identity = BUF_strdup(identity); | |
2940 | if (s->session->psk_identity == NULL) | |
2941 | { | |
2942 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2943 | ERR_R_MALLOC_FAILURE); | |
2944 | goto psk_err; | |
2945 | } | |
2946 | ||
2947 | s->session->master_key_length = | |
2948 | s->method->ssl3_enc->generate_master_secret(s, | |
2949 | s->session->master_key, | |
2950 | psk_or_pre_ms, pre_ms_len); | |
2951 | n = strlen(identity); | |
2952 | s2n(n, p); | |
2953 | memcpy(p, identity, n); | |
2954 | n+=2; | |
2955 | psk_err = 0; | |
2956 | psk_err: | |
2957 | OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN); | |
52b8dad8 | 2958 | OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms)); |
ddac1974 NL |
2959 | if (psk_err != 0) |
2960 | { | |
2961 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); | |
2962 | goto err; | |
2963 | } | |
2964 | } | |
2965 | #endif | |
f9b3bff6 | 2966 | else |
d02b48c6 | 2967 | { |
ea262260 BM |
2968 | ssl3_send_alert(s, SSL3_AL_FATAL, |
2969 | SSL_AD_HANDSHAKE_FAILURE); | |
2970 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2971 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
2972 | goto err; |
2973 | } | |
2974 | ||
2975 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
2976 | l2n3(n,d); | |
2977 | ||
2978 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
2979 | /* number of bytes to write */ | |
2980 | s->init_num=n+4; | |
2981 | s->init_off=0; | |
2982 | } | |
2983 | ||
2984 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
2985 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2986 | err: | |
ea262260 BM |
2987 | #ifndef OPENSSL_NO_ECDH |
2988 | BN_CTX_free(bn_ctx); | |
2989 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2990 | if (clnt_ecdh != NULL) | |
ea262260 | 2991 | EC_KEY_free(clnt_ecdh); |
57376542 | 2992 | EVP_PKEY_free(srvr_pub_pkey); |
ea262260 | 2993 | #endif |
d02b48c6 RE |
2994 | return(-1); |
2995 | } | |
2996 | ||
36d16f8e | 2997 | int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
2998 | { |
2999 | unsigned char *p,*d; | |
3000 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
3001 | EVP_PKEY *pkey; | |
0e1dba93 | 3002 | EVP_PKEY_CTX *pctx=NULL; |
855a54a9 | 3003 | EVP_MD_CTX mctx; |
ca7fea96 | 3004 | unsigned u=0; |
d02b48c6 | 3005 | unsigned long n; |
58964a49 | 3006 | int j; |
d02b48c6 | 3007 | |
855a54a9 DSH |
3008 | EVP_MD_CTX_init(&mctx); |
3009 | ||
d02b48c6 RE |
3010 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) |
3011 | { | |
3012 | d=(unsigned char *)s->init_buf->data; | |
3013 | p= &(d[4]); | |
3014 | pkey=s->cert->key->privatekey; | |
0e1dba93 DSH |
3015 | /* Create context from key and test if sha1 is allowed as digest */ |
3016 | pctx = EVP_PKEY_CTX_new(pkey,NULL); | |
3017 | EVP_PKEY_sign_init(pctx); | |
3018 | if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1())>0) | |
3019 | { | |
238b6361 | 3020 | if (TLS1_get_version(s) < TLS1_2_VERSION) |
855a54a9 | 3021 | s->method->ssl3_enc->cert_verify_mac(s, |
0e1dba93 DSH |
3022 | NID_sha1, |
3023 | &(data[MD5_DIGEST_LENGTH])); | |
3024 | } | |
3025 | else | |
3026 | { | |
3027 | ERR_clear_error(); | |
3028 | } | |
855a54a9 DSH |
3029 | /* For TLS v1.2 send signature algorithm and signature |
3030 | * using agreed digest and cached handshake records. | |
3031 | */ | |
238b6361 | 3032 | if (TLS1_get_version(s) >= TLS1_2_VERSION) |
855a54a9 DSH |
3033 | { |
3034 | long hdatalen = 0; | |
3035 | void *hdata; | |
3036 | const EVP_MD *md = s->cert->key->digest; | |
3037 | hdatalen = BIO_get_mem_data(s->s3->handshake_buffer, | |
3038 | &hdata); | |
3039 | if (hdatalen <= 0 || !tls12_get_sigandhash(p, pkey, md)) | |
3040 | { | |
3041 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
3042 | ERR_R_INTERNAL_ERROR); | |
3043 | goto err; | |
3044 | } | |
3045 | p += 2; | |
3046 | #ifdef SSL_DEBUG | |
3047 | fprintf(stderr, "Using TLS 1.2 with client alg %s\n", | |
3048 | EVP_MD_name(md)); | |
3049 | #endif | |
3050 | if (!EVP_SignInit_ex(&mctx, md, NULL) | |
3051 | || !EVP_SignUpdate(&mctx, hdata, hdatalen) | |
3052 | || !EVP_SignFinal(&mctx, p + 2, &u, pkey)) | |
3053 | { | |
3054 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
3055 | ERR_R_EVP_LIB); | |
3056 | goto err; | |
3057 | } | |
3058 | s2n(u,p); | |
3059 | n = u + 4; | |
3060 | if (!ssl3_digest_cached_records(s)) | |
3061 | goto err; | |
3062 | } | |
3063 | else | |
bc36ee62 | 3064 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
3065 | if (pkey->type == EVP_PKEY_RSA) |
3066 | { | |
58964a49 | 3067 | s->method->ssl3_enc->cert_verify_mac(s, |
81025661 DSH |
3068 | NID_md5, |
3069 | &(data[0])); | |
1c80019a DSH |
3070 | if (RSA_sign(NID_md5_sha1, data, |
3071 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 3072 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
3073 | { |
3074 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
3075 | goto err; | |
3076 | } | |
ca7fea96 BL |
3077 | s2n(u,p); |
3078 | n=u+2; | |
d02b48c6 RE |
3079 | } |
3080 | else | |
3081 | #endif | |
bc36ee62 | 3082 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
3083 | if (pkey->type == EVP_PKEY_DSA) |
3084 | { | |
3085 | if (!DSA_sign(pkey->save_type, | |
3086 | &(data[MD5_DIGEST_LENGTH]), | |
3087 | SHA_DIGEST_LENGTH,&(p[2]), | |
3088 | (unsigned int *)&j,pkey->pkey.dsa)) | |
3089 | { | |
3090 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
3091 | goto err; | |
3092 | } | |
3093 | s2n(j,p); | |
3094 | n=j+2; | |
3095 | } | |
3096 | else | |
ea262260 BM |
3097 | #endif |
3098 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 3099 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
3100 | { |
3101 | if (!ECDSA_sign(pkey->save_type, | |
3102 | &(data[MD5_DIGEST_LENGTH]), | |
3103 | SHA_DIGEST_LENGTH,&(p[2]), | |
9dd84053 | 3104 | (unsigned int *)&j,pkey->pkey.ec)) |
ea262260 BM |
3105 | { |
3106 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
3107 | ERR_R_ECDSA_LIB); | |
3108 | goto err; | |
3109 | } | |
3110 | s2n(j,p); | |
3111 | n=j+2; | |
3112 | } | |
3113 | else | |
d02b48c6 | 3114 | #endif |
0e1dba93 DSH |
3115 | if (pkey->type == NID_id_GostR3410_94 || pkey->type == NID_id_GostR3410_2001) |
3116 | { | |
3117 | unsigned char signbuf[64]; | |
3118 | int i; | |
9400d9ac | 3119 | size_t sigsize=64; |
0e1dba93 DSH |
3120 | s->method->ssl3_enc->cert_verify_mac(s, |
3121 | NID_id_GostR3411_94, | |
3122 | data); | |
a25f33d2 | 3123 | if (EVP_PKEY_sign(pctx, signbuf, &sigsize, data, 32) <= 0) { |
0e1dba93 DSH |
3124 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, |
3125 | ERR_R_INTERNAL_ERROR); | |
3126 | goto err; | |
3127 | } | |
3128 | for (i=63,j=0; i>=0; j++, i--) { | |
3129 | p[2+j]=signbuf[i]; | |
3130 | } | |
3131 | s2n(j,p); | |
3132 | n=j+2; | |
3133 | } | |
3134 | else | |
3135 | { | |
5277d7cb | 3136 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 | 3137 | goto err; |
0e1dba93 | 3138 | } |
d02b48c6 RE |
3139 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; |
3140 | l2n3(n,d); | |
3141 | ||
ba9f80c5 | 3142 | s->state=SSL3_ST_CW_CERT_VRFY_B; |
d02b48c6 RE |
3143 | s->init_num=(int)n+4; |
3144 | s->init_off=0; | |
3145 | } | |
855a54a9 | 3146 | EVP_MD_CTX_cleanup(&mctx); |
0e1dba93 | 3147 | EVP_PKEY_CTX_free(pctx); |
d02b48c6 RE |
3148 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); |
3149 | err: | |
855a54a9 | 3150 | EVP_MD_CTX_cleanup(&mctx); |
0e1dba93 | 3151 | EVP_PKEY_CTX_free(pctx); |
d02b48c6 RE |
3152 | return(-1); |
3153 | } | |
3154 | ||
0d609395 DSH |
3155 | /* Check a certificate can be used for client authentication. Currently |
3156 | * just check cert exists and if static DH client certificates can be used. | |
3157 | */ | |
3158 | static int ssl3_check_client_certificate(SSL *s) | |
3159 | { | |
3160 | unsigned long alg_k; | |
3161 | if (!s->cert || !s->cert->key->x509 || !s->cert->key->privatekey) | |
3162 | return 0; | |
3163 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; | |
3164 | /* See if we can use client certificate for fixed DH */ | |
3165 | if (alg_k & (SSL_kDHr|SSL_kDHd)) | |
3166 | { | |
3167 | SESS_CERT *scert = s->session->sess_cert; | |
3168 | int i = scert->peer_cert_type; | |
3169 | EVP_PKEY *clkey = NULL, *spkey = NULL; | |
3170 | clkey = s->cert->key->privatekey; | |
3171 | /* If client key not DH assume it can be used */ | |
3172 | if (EVP_PKEY_id(clkey) != EVP_PKEY_DH) | |
3173 | return 1; | |
3174 | if (i >= 0) | |
3175 | spkey = X509_get_pubkey(scert->peer_pkeys[i].x509); | |
3176 | if (spkey) | |
3177 | { | |
3178 | /* Compare server and client parameters */ | |
3179 | i = EVP_PKEY_cmp_parameters(clkey, spkey); | |
3180 | EVP_PKEY_free(spkey); | |
3181 | if (i != 1) | |
3182 | return 0; | |
3183 | } | |
3184 | s->s3->flags |= TLS1_FLAGS_SKIP_CERT_VERIFY; | |
3185 | } | |
3186 | return 1; | |
3187 | } | |
3188 | ||
36d16f8e | 3189 | int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
3190 | { |
3191 | X509 *x509=NULL; | |
3192 | EVP_PKEY *pkey=NULL; | |
3193 | int i; | |
3194 | unsigned long l; | |
3195 | ||
3196 | if (s->state == SSL3_ST_CW_CERT_A) | |
3197 | { | |
18d71588 DSH |
3198 | /* Let cert callback update client certificates if required */ |
3199 | if (s->cert->cert_cb | |
3200 | && s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0) | |
3201 | { | |
3202 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR); | |
3203 | return 0; | |
3204 | } | |
0d609395 | 3205 | if (ssl3_check_client_certificate(s)) |
d02b48c6 | 3206 | s->state=SSL3_ST_CW_CERT_C; |
0d609395 DSH |
3207 | else |
3208 | s->state=SSL3_ST_CW_CERT_B; | |
d02b48c6 RE |
3209 | } |
3210 | ||
3211 | /* We need to get a client cert */ | |
3212 | if (s->state == SSL3_ST_CW_CERT_B) | |
3213 | { | |
3214 | /* If we get an error, we need to | |
3215 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
3216 | * We then get retied later */ | |
3217 | i=0; | |
368888bc | 3218 | i = ssl_do_client_cert_cb(s, &x509, &pkey); |
d02b48c6 RE |
3219 | if (i < 0) |
3220 | { | |
3221 | s->rwstate=SSL_X509_LOOKUP; | |
3222 | return(-1); | |
3223 | } | |
3224 | s->rwstate=SSL_NOTHING; | |
3225 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
3226 | { | |
3227 | s->state=SSL3_ST_CW_CERT_B; | |
3228 | if ( !SSL_use_certificate(s,x509) || | |
3229 | !SSL_use_PrivateKey(s,pkey)) | |
3230 | i=0; | |
3231 | } | |
3232 | else if (i == 1) | |
3233 | { | |
3234 | i=0; | |
3235 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
3236 | } | |
3237 | ||
3238 | if (x509 != NULL) X509_free(x509); | |
3239 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
0d609395 DSH |
3240 | if (i && !ssl3_check_client_certificate(s)) |
3241 | i = 0; | |
d02b48c6 RE |
3242 | if (i == 0) |
3243 | { | |
58964a49 RE |
3244 | if (s->version == SSL3_VERSION) |
3245 | { | |
3246 | s->s3->tmp.cert_req=0; | |
3247 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
3248 | return(1); | |
3249 | } | |
3250 | else | |
3251 | { | |
3252 | s->s3->tmp.cert_req=2; | |
3253 | } | |
d02b48c6 RE |
3254 | } |
3255 | ||
3256 | /* Ok, we have a cert */ | |
3257 | s->state=SSL3_ST_CW_CERT_C; | |
3258 | } | |
3259 | ||
3260 | if (s->state == SSL3_ST_CW_CERT_C) | |
3261 | { | |
3262 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 | 3263 | l=ssl3_output_cert_chain(s, |
c526ed41 | 3264 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key); |
d02b48c6 RE |
3265 | s->init_num=(int)l; |
3266 | s->init_off=0; | |
3267 | } | |
3268 | /* SSL3_ST_CW_CERT_D */ | |
3269 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
3270 | } | |
3271 | ||
3272 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
3273 | ||
36d16f8e | 3274 | int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
3275 | { |
3276 | int i,idx; | |
52b8dad8 | 3277 | long alg_k,alg_a; |
d02b48c6 | 3278 | EVP_PKEY *pkey=NULL; |
b56bce4f | 3279 | SESS_CERT *sc; |
bc36ee62 | 3280 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 3281 | RSA *rsa; |
79df9d62 | 3282 | #endif |
bc36ee62 | 3283 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 3284 | DH *dh; |
79df9d62 | 3285 | #endif |
d02b48c6 | 3286 | |
52b8dad8 BM |
3287 | alg_k=s->s3->tmp.new_cipher->algorithm_mkey; |
3288 | alg_a=s->s3->tmp.new_cipher->algorithm_auth; | |
d02b48c6 RE |
3289 | |
3290 | /* we don't have a certificate */ | |
8e1dc4d7 | 3291 | if ((alg_a & (SSL_aNULL|SSL_aKRB5)) || (alg_k & SSL_kPSK)) |
d02b48c6 RE |
3292 | return(1); |
3293 | ||
c1ca9d32 DSH |
3294 | sc=s->session->sess_cert; |
3295 | if (sc == NULL) | |
3296 | { | |
3297 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); | |
3298 | goto err; | |
3299 | } | |
3300 | ||
bc36ee62 | 3301 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 3302 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 3303 | #endif |
bc36ee62 | 3304 | #ifndef OPENSSL_NO_DH |
b56bce4f | 3305 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 3306 | #endif |
d02b48c6 RE |
3307 | |
3308 | /* This is the passed certificate */ | |
3309 | ||
b56bce4f | 3310 | idx=sc->peer_cert_type; |
ea262260 BM |
3311 | #ifndef OPENSSL_NO_ECDH |
3312 | if (idx == SSL_PKEY_ECC) | |
3313 | { | |
ed3ecd80 | 3314 | if (ssl_check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, |
a2f9200f | 3315 | s) == 0) |
ea262260 BM |
3316 | { /* check failed */ |
3317 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
52b8dad8 | 3318 | goto f_err; |
ea262260 BM |
3319 | } |
3320 | else | |
3321 | { | |
3322 | return 1; | |
3323 | } | |
3324 | } | |
3325 | #endif | |
b56bce4f BM |
3326 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
3327 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 3328 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
3329 | |
3330 | ||
3331 | /* Check that we have a certificate if we require one */ | |
52b8dad8 | 3332 | if ((alg_a & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
3333 | { |
3334 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
3335 | goto f_err; | |
3336 | } | |
bc36ee62 | 3337 | #ifndef OPENSSL_NO_DSA |
52b8dad8 | 3338 | else if ((alg_a & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
d02b48c6 RE |
3339 | { |
3340 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
3341 | goto f_err; | |
3342 | } | |
3343 | #endif | |
bc36ee62 | 3344 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 3345 | if ((alg_k & SSL_kRSA) && |
d02b48c6 RE |
3346 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) |
3347 | { | |
3348 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
3349 | goto f_err; | |
3350 | } | |
79df9d62 | 3351 | #endif |
bc36ee62 | 3352 | #ifndef OPENSSL_NO_DH |
8e1dc4d7 | 3353 | if ((alg_k & SSL_kEDH) && |
d02b48c6 RE |
3354 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
3355 | { | |
3356 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
3357 | goto f_err; | |
3358 | } | |
8e1dc4d7 DSH |
3359 | else if ((alg_k & SSL_kDHr) && (TLS1_get_version(s) < TLS1_2_VERSION) && |
3360 | !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) | |
d02b48c6 RE |
3361 | { |
3362 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
3363 | goto f_err; | |
3364 | } | |
bc36ee62 | 3365 | #ifndef OPENSSL_NO_DSA |
8e1dc4d7 DSH |
3366 | else if ((alg_k & SSL_kDHd) && (TLS1_get_version(s) < TLS1_2_VERSION) && |
3367 | !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) | |
d02b48c6 RE |
3368 | { |
3369 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
3370 | goto f_err; | |
3371 | } | |
3372 | #endif | |
3373 | #endif | |
3374 | ||
018e57c7 | 3375 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 3376 | { |
bc36ee62 | 3377 | #ifndef OPENSSL_NO_RSA |
52b8dad8 | 3378 | if (alg_k & SSL_kRSA) |
d02b48c6 | 3379 | { |
06ab81f9 | 3380 | if (rsa == NULL |
70ef9c5a | 3381 | || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
3382 | { |
3383 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
3384 | goto f_err; | |
3385 | } | |
3386 | } | |
3387 | else | |
3388 | #endif | |
bc36ee62 | 3389 | #ifndef OPENSSL_NO_DH |
52b8dad8 | 3390 | if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
3391 | { |
3392 | if (dh == NULL | |
70ef9c5a | 3393 | || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
3394 | { |
3395 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
3396 | goto f_err; | |
3397 | } | |
3398 | } | |
3399 | else | |
3400 | #endif | |
3401 | { | |
3402 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
3403 | goto f_err; | |
3404 | } | |
3405 | } | |
3406 | return(1); | |
3407 | f_err: | |
58964a49 | 3408 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
3409 | err: |
3410 | return(0); | |
3411 | } | |
6434abbf DSH |
3412 | |
3413 | /* Check to see if handshake is full or resumed. Usually this is just a | |
3414 | * case of checking to see if a cache hit has occurred. In the case of | |
3415 | * session tickets we have to check the next message to be sure. | |
3416 | */ | |
3417 | ||
3418 | #ifndef OPENSSL_NO_TLSEXT | |
bf48836c | 3419 | # ifndef OPENSSL_NO_NEXTPROTONEG |
ee2ffc27 BL |
3420 | int ssl3_send_next_proto(SSL *s) |
3421 | { | |
3422 | unsigned int len, padding_len; | |
3423 | unsigned char *d; | |
3424 | ||
3425 | if (s->state == SSL3_ST_CW_NEXT_PROTO_A) | |
3426 | { | |
3427 | len = s->next_proto_negotiated_len; | |
3428 | padding_len = 32 - ((len + 2) % 32); | |
3429 | d = (unsigned char *)s->init_buf->data; | |
3430 | d[4] = len; | |
3431 | memcpy(d + 5, s->next_proto_negotiated, len); | |
3432 | d[5 + len] = padding_len; | |
3433 | memset(d + 6 + len, 0, padding_len); | |
3434 | *(d++)=SSL3_MT_NEXT_PROTO; | |
3435 | l2n3(2 + len + padding_len, d); | |
3436 | s->state = SSL3_ST_CW_NEXT_PROTO_B; | |
3437 | s->init_num = 4 + 2 + len + padding_len; | |
3438 | s->init_off = 0; | |
3439 | } | |
3440 | ||
3441 | return ssl3_do_write(s, SSL3_RT_HANDSHAKE); | |
3442 | } | |
3443 | # endif | |
3444 | ||
8025e251 | 3445 | int ssl3_check_finished(SSL *s) |
6434abbf DSH |
3446 | { |
3447 | int ok; | |
3448 | long n; | |
12bf56c0 DSH |
3449 | /* If we have no ticket it cannot be a resumed session. */ |
3450 | if (!s->session->tlsext_tick) | |
6434abbf DSH |
3451 | return 1; |
3452 | /* this function is called when we really expect a Certificate | |
3453 | * message, so permit appropriate message length */ | |
3454 | n=s->method->ssl_get_message(s, | |
3455 | SSL3_ST_CR_CERT_A, | |
3456 | SSL3_ST_CR_CERT_B, | |
3457 | -1, | |
3458 | s->max_cert_list, | |
3459 | &ok); | |
3460 | if (!ok) return((int)n); | |
3461 | s->s3->tmp.reuse_message = 1; | |
3462 | if ((s->s3->tmp.message_type == SSL3_MT_FINISHED) | |
3463 | || (s->s3->tmp.message_type == SSL3_MT_NEWSESSION_TICKET)) | |
3464 | return 2; | |
3465 | ||
3466 | return 1; | |
3467 | } | |
3468 | #endif | |
368888bc DSH |
3469 | |
3470 | int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey) | |
3471 | { | |
3472 | int i = 0; | |
3473 | #ifndef OPENSSL_NO_ENGINE | |
3474 | if (s->ctx->client_cert_engine) | |
3475 | { | |
3476 | i = ENGINE_load_ssl_client_cert(s->ctx->client_cert_engine, s, | |
3477 | SSL_get_client_CA_list(s), | |
3fc59c84 | 3478 | px509, ppkey, NULL, NULL, NULL); |
368888bc DSH |
3479 | if (i != 0) |
3480 | return i; | |
3481 | } | |
3482 | #endif | |
3483 | if (s->ctx->client_cert_cb) | |
3484 | i = s->ctx->client_cert_cb(s,px509,ppkey); | |
3485 | return i; | |
3486 | } | |
a9e1c50b BL |
3487 | |
3488 | #ifndef OPENSSL_NO_TLSEXT | |
3489 | int tls1_get_server_supplemental_data(SSL *s) | |
3490 | { | |
3491 | int al; | |
3492 | int ok; | |
3493 | unsigned long supp_data_len, authz_data_len; | |
3494 | long n; | |
3495 | unsigned short supp_data_type, authz_data_type, proof_len; | |
3496 | const unsigned char *p; | |
3497 | unsigned char *new_proof; | |
3498 | ||
3499 | n=s->method->ssl_get_message(s, | |
3500 | SSL3_ST_CR_SUPPLEMENTAL_DATA_A, | |
3501 | SSL3_ST_CR_SUPPLEMENTAL_DATA_B, | |
3502 | SSL3_MT_SUPPLEMENTAL_DATA, | |
3503 | /* use default limit */ | |
3504 | TLSEXT_MAXLEN_supplemental_data, | |
3505 | &ok); | |
3506 | ||
3507 | if (!ok) return((int)n); | |
3508 | ||
3509 | p = (unsigned char *)s->init_msg; | |
3510 | ||
3511 | /* The message cannot be empty */ | |
3512 | if (n < 3) | |
3513 | { | |
3514 | al = SSL_AD_DECODE_ERROR; | |
3515 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH); | |
3516 | goto f_err; | |
3517 | } | |
3518 | /* Length of supplemental data */ | |
3519 | n2l3(p,supp_data_len); | |
3520 | n -= 3; | |
3521 | /* We must have at least one supplemental data entry | |
3522 | * with type (1 byte) and length (2 bytes). */ | |
3523 | if (supp_data_len != (unsigned long) n || n < 4) | |
3524 | { | |
3525 | al = SSL_AD_DECODE_ERROR; | |
3526 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH); | |
3527 | goto f_err; | |
3528 | } | |
3529 | /* Supplemental data type: must be authz_data */ | |
3530 | n2s(p,supp_data_type); | |
3531 | n -= 2; | |
3532 | if (supp_data_type != TLSEXT_SUPPLEMENTALDATATYPE_authz_data) | |
3533 | { | |
3534 | al = SSL_AD_UNEXPECTED_MESSAGE; | |
3535 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_SUPPLEMENTAL_DATA_TYPE); | |
3536 | goto f_err; | |
3537 | } | |
3538 | /* Authz data length */ | |
3539 | n2s(p, authz_data_len); | |
3540 | n -= 2; | |
3541 | if (authz_data_len != (unsigned long) n || n < 1) | |
3542 | { | |
3543 | al = SSL_AD_DECODE_ERROR; | |
3544 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH); | |
3545 | goto f_err; | |
3546 | } | |
3547 | /* Authz data type: must be audit_proof */ | |
3548 | authz_data_type = *(p++); | |
3549 | n -= 1; | |
3550 | if (authz_data_type != TLSEXT_AUTHZDATAFORMAT_audit_proof) | |
3551 | { | |
3552 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
3553 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_UNKNOWN_AUTHZ_DATA_TYPE); | |
3554 | goto f_err; | |
3555 | } | |
3556 | /* We have a proof: read its length */ | |
3557 | if (n < 2) | |
3558 | { | |
3559 | al = SSL_AD_DECODE_ERROR; | |
3560 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH); | |
3561 | goto f_err; | |
3562 | } | |
3563 | n2s(p, proof_len); | |
3564 | n -= 2; | |
3565 | if (proof_len != (unsigned long) n) | |
3566 | { | |
3567 | al = SSL_AD_DECODE_ERROR; | |
3568 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,SSL_R_LENGTH_MISMATCH); | |
3569 | goto f_err; | |
3570 | } | |
3571 | /* Store the proof */ | |
3572 | new_proof = OPENSSL_realloc(s->session->audit_proof, | |
3573 | proof_len); | |
3574 | if (new_proof == NULL) | |
3575 | { | |
3576 | SSLerr(SSL_F_TLS1_GET_SERVER_SUPPLEMENTAL_DATA,ERR_R_MALLOC_FAILURE); | |
3577 | return 0; | |
3578 | } | |
3579 | s->session->audit_proof_length = proof_len; | |
3580 | s->session->audit_proof = new_proof; | |
3581 | memcpy(s->session->audit_proof, p, proof_len); | |
3582 | ||
3583 | /* Got the proof, but can't verify it yet. */ | |
3584 | return 1; | |
3585 | f_err: | |
3586 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
3587 | return -1; | |
3588 | } | |
3589 | #endif |