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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 | /* ==================================================================== |
176f31dd | 59 | * Copyright (c) 1998-2003 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 | */ | |
d02b48c6 RE |
124 | |
125 | #include <stdio.h> | |
7b63c0fa LJ |
126 | #include "ssl_locl.h" |
127 | #include "kssl_lcl.h" | |
ec577822 BM |
128 | #include <openssl/buffer.h> |
129 | #include <openssl/rand.h> | |
130 | #include <openssl/objects.h> | |
131 | #include <openssl/evp.h> | |
dbad1690 | 132 | #include <openssl/md5.h> |
60a938c6 | 133 | #include <openssl/dh.h> |
d095b68d | 134 | #include <openssl/bn.h> |
f9b3bff6 | 135 | |
9b3086fe | 136 | static SSL_METHOD *ssl3_get_client_method(int ver); |
ccd86b68 | 137 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
ea262260 BM |
138 | |
139 | #ifndef OPENSSL_NO_ECDH | |
140 | static int curve_id2nid(int curve_id); | |
141 | int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs); | |
142 | #endif | |
143 | ||
6b691a5c | 144 | static SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 145 | { |
58964a49 | 146 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
147 | return(SSLv3_client_method()); |
148 | else | |
149 | return(NULL); | |
150 | } | |
151 | ||
6b691a5c | 152 | SSL_METHOD *SSLv3_client_method(void) |
d02b48c6 RE |
153 | { |
154 | static int init=1; | |
155 | static SSL_METHOD SSLv3_client_data; | |
156 | ||
157 | if (init) | |
158 | { | |
e78f1378 BM |
159 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD); |
160 | ||
b8565a9a BM |
161 | if (init) |
162 | { | |
163 | memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(), | |
164 | sizeof(SSL_METHOD)); | |
165 | SSLv3_client_data.ssl_connect=ssl3_connect; | |
166 | SSLv3_client_data.get_ssl_method=ssl3_get_client_method; | |
167 | init=0; | |
168 | } | |
e78f1378 BM |
169 | |
170 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD); | |
d02b48c6 RE |
171 | } |
172 | return(&SSLv3_client_data); | |
173 | } | |
174 | ||
6b691a5c | 175 | int ssl3_connect(SSL *s) |
d02b48c6 | 176 | { |
8d6ad9e3 | 177 | BUF_MEM *buf=NULL; |
d02b48c6 RE |
178 | unsigned long Time=time(NULL),l; |
179 | long num1; | |
45d87a1f | 180 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 181 | int ret= -1; |
d02b48c6 RE |
182 | int new_state,state,skip=0;; |
183 | ||
eb952088 | 184 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 185 | ERR_clear_error(); |
58964a49 | 186 | clear_sys_error(); |
d02b48c6 RE |
187 | |
188 | if (s->info_callback != NULL) | |
189 | cb=s->info_callback; | |
190 | else if (s->ctx->info_callback != NULL) | |
191 | cb=s->ctx->info_callback; | |
192 | ||
d02b48c6 | 193 | s->in_handshake++; |
979689aa | 194 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 RE |
195 | |
196 | for (;;) | |
197 | { | |
198 | state=s->state; | |
199 | ||
200 | switch(s->state) | |
201 | { | |
202 | case SSL_ST_RENEGOTIATE: | |
203 | s->new_session=1; | |
204 | s->state=SSL_ST_CONNECT; | |
413c4f45 | 205 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
206 | /* break */ |
207 | case SSL_ST_BEFORE: | |
208 | case SSL_ST_CONNECT: | |
209 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
210 | case SSL_ST_OK|SSL_ST_CONNECT: | |
211 | ||
413c4f45 | 212 | s->server=0; |
d02b48c6 RE |
213 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
214 | ||
58964a49 | 215 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 216 | { |
5277d7cb | 217 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
218 | ret = -1; |
219 | goto end; | |
220 | } | |
221 | ||
58964a49 | 222 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
223 | s->type=SSL_ST_CONNECT; |
224 | ||
225 | if (s->init_buf == NULL) | |
226 | { | |
227 | if ((buf=BUF_MEM_new()) == NULL) | |
228 | { | |
229 | ret= -1; | |
230 | goto end; | |
231 | } | |
232 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
233 | { | |
234 | ret= -1; | |
235 | goto end; | |
236 | } | |
237 | s->init_buf=buf; | |
8d6ad9e3 | 238 | buf=NULL; |
d02b48c6 RE |
239 | } |
240 | ||
241 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
242 | ||
243 | /* setup buffing BIO */ | |
58964a49 | 244 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
245 | |
246 | /* don't push the buffering BIO quite yet */ | |
247 | ||
248 | ssl3_init_finished_mac(s); | |
249 | ||
250 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 251 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
252 | s->init_num=0; |
253 | break; | |
254 | ||
255 | case SSL3_ST_CW_CLNT_HELLO_A: | |
256 | case SSL3_ST_CW_CLNT_HELLO_B: | |
257 | ||
258 | s->shutdown=0; | |
259 | ret=ssl3_client_hello(s); | |
260 | if (ret <= 0) goto end; | |
261 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
262 | s->init_num=0; | |
263 | ||
264 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
265 | if (s->bbio != s->wbio) |
266 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
267 | |
268 | break; | |
269 | ||
270 | case SSL3_ST_CR_SRVR_HELLO_A: | |
271 | case SSL3_ST_CR_SRVR_HELLO_B: | |
272 | ret=ssl3_get_server_hello(s); | |
273 | if (ret <= 0) goto end; | |
274 | if (s->hit) | |
275 | s->state=SSL3_ST_CR_FINISHED_A; | |
276 | else | |
277 | s->state=SSL3_ST_CR_CERT_A; | |
278 | s->init_num=0; | |
279 | break; | |
280 | ||
281 | case SSL3_ST_CR_CERT_A: | |
282 | case SSL3_ST_CR_CERT_B: | |
ea262260 | 283 | /* Check if it is anon DH/ECDH */ |
d02b48c6 RE |
284 | if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) |
285 | { | |
286 | ret=ssl3_get_server_certificate(s); | |
287 | if (ret <= 0) goto end; | |
288 | } | |
289 | else | |
290 | skip=1; | |
291 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
292 | s->init_num=0; | |
293 | break; | |
294 | ||
295 | case SSL3_ST_CR_KEY_EXCH_A: | |
296 | case SSL3_ST_CR_KEY_EXCH_B: | |
297 | ret=ssl3_get_key_exchange(s); | |
298 | if (ret <= 0) goto end; | |
299 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
300 | s->init_num=0; | |
301 | ||
302 | /* at this point we check that we have the | |
303 | * required stuff from the server */ | |
304 | if (!ssl3_check_cert_and_algorithm(s)) | |
305 | { | |
306 | ret= -1; | |
307 | goto end; | |
308 | } | |
309 | break; | |
310 | ||
311 | case SSL3_ST_CR_CERT_REQ_A: | |
312 | case SSL3_ST_CR_CERT_REQ_B: | |
313 | ret=ssl3_get_certificate_request(s); | |
314 | if (ret <= 0) goto end; | |
315 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
316 | s->init_num=0; | |
317 | break; | |
318 | ||
319 | case SSL3_ST_CR_SRVR_DONE_A: | |
320 | case SSL3_ST_CR_SRVR_DONE_B: | |
321 | ret=ssl3_get_server_done(s); | |
322 | if (ret <= 0) goto end; | |
323 | if (s->s3->tmp.cert_req) | |
324 | s->state=SSL3_ST_CW_CERT_A; | |
325 | else | |
326 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
327 | s->init_num=0; | |
328 | ||
329 | break; | |
330 | ||
331 | case SSL3_ST_CW_CERT_A: | |
332 | case SSL3_ST_CW_CERT_B: | |
333 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 334 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
335 | ret=ssl3_send_client_certificate(s); |
336 | if (ret <= 0) goto end; | |
337 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
338 | s->init_num=0; | |
339 | break; | |
340 | ||
341 | case SSL3_ST_CW_KEY_EXCH_A: | |
342 | case SSL3_ST_CW_KEY_EXCH_B: | |
343 | ret=ssl3_send_client_key_exchange(s); | |
344 | if (ret <= 0) goto end; | |
345 | l=s->s3->tmp.new_cipher->algorithms; | |
346 | /* EAY EAY EAY need to check for DH fix cert | |
347 | * sent back */ | |
58964a49 RE |
348 | /* For TLS, cert_req is set to 2, so a cert chain |
349 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
350 | /* XXX: For now, we do not support client |
351 | * authentication in ECDH cipher suites with | |
352 | * ECDH (rather than ECDSA) certificates. | |
353 | * We need to skip the certificate verify | |
354 | * message when client's ECDH public key is sent | |
355 | * inside the client certificate. | |
356 | */ | |
58964a49 | 357 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
358 | { |
359 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
360 | } | |
361 | else | |
362 | { | |
363 | s->state=SSL3_ST_CW_CHANGE_A; | |
364 | s->s3->change_cipher_spec=0; | |
365 | } | |
366 | ||
367 | s->init_num=0; | |
368 | break; | |
369 | ||
370 | case SSL3_ST_CW_CERT_VRFY_A: | |
371 | case SSL3_ST_CW_CERT_VRFY_B: | |
372 | ret=ssl3_send_client_verify(s); | |
373 | if (ret <= 0) goto end; | |
374 | s->state=SSL3_ST_CW_CHANGE_A; | |
375 | s->init_num=0; | |
376 | s->s3->change_cipher_spec=0; | |
377 | break; | |
378 | ||
379 | case SSL3_ST_CW_CHANGE_A: | |
380 | case SSL3_ST_CW_CHANGE_B: | |
381 | ret=ssl3_send_change_cipher_spec(s, | |
382 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
383 | if (ret <= 0) goto end; | |
384 | s->state=SSL3_ST_CW_FINISHED_A; | |
385 | s->init_num=0; | |
386 | ||
387 | s->session->cipher=s->s3->tmp.new_cipher; | |
413c4f45 MC |
388 | if (s->s3->tmp.new_compression == NULL) |
389 | s->session->compress_meth=0; | |
390 | else | |
391 | s->session->compress_meth= | |
392 | s->s3->tmp.new_compression->id; | |
58964a49 | 393 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
394 | { |
395 | ret= -1; | |
396 | goto end; | |
397 | } | |
398 | ||
58964a49 | 399 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
400 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
401 | { | |
402 | ret= -1; | |
403 | goto end; | |
404 | } | |
405 | ||
406 | break; | |
407 | ||
408 | case SSL3_ST_CW_FINISHED_A: | |
409 | case SSL3_ST_CW_FINISHED_B: | |
410 | ret=ssl3_send_finished(s, | |
411 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
412 | s->method->ssl3_enc->client_finished_label, |
413 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
414 | if (ret <= 0) goto end; |
415 | s->state=SSL3_ST_CW_FLUSH; | |
416 | ||
417 | /* clear flags */ | |
418 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
419 | if (s->hit) | |
420 | { | |
421 | s->s3->tmp.next_state=SSL_ST_OK; | |
422 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
423 | { | |
424 | s->state=SSL_ST_OK; | |
425 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
426 | s->s3->delay_buf_pop_ret=0; | |
427 | } | |
428 | } | |
429 | else | |
430 | { | |
431 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; | |
432 | } | |
433 | s->init_num=0; | |
434 | break; | |
435 | ||
436 | case SSL3_ST_CR_FINISHED_A: | |
437 | case SSL3_ST_CR_FINISHED_B: | |
438 | ||
439 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, | |
58964a49 | 440 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
441 | if (ret <= 0) goto end; |
442 | ||
443 | if (s->hit) | |
444 | s->state=SSL3_ST_CW_CHANGE_A; | |
445 | else | |
446 | s->state=SSL_ST_OK; | |
447 | s->init_num=0; | |
448 | break; | |
449 | ||
450 | case SSL3_ST_CW_FLUSH: | |
451 | /* number of bytes to be flushed */ | |
452 | num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); | |
453 | if (num1 > 0) | |
454 | { | |
455 | s->rwstate=SSL_WRITING; | |
456 | num1=BIO_flush(s->wbio); | |
457 | if (num1 <= 0) { ret= -1; goto end; } | |
458 | s->rwstate=SSL_NOTHING; | |
459 | } | |
460 | ||
461 | s->state=s->s3->tmp.next_state; | |
462 | break; | |
463 | ||
464 | case SSL_ST_OK: | |
465 | /* clean a few things up */ | |
466 | ssl3_cleanup_key_block(s); | |
467 | ||
413c4f45 | 468 | if (s->init_buf != NULL) |
d02b48c6 | 469 | { |
413c4f45 MC |
470 | BUF_MEM_free(s->init_buf); |
471 | s->init_buf=NULL; | |
d02b48c6 | 472 | } |
413c4f45 MC |
473 | |
474 | /* If we are not 'joining' the last two packets, | |
475 | * remove the buffering now */ | |
476 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
477 | ssl_free_wbio_buffer(s); | |
478 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
479 | |
480 | s->init_num=0; | |
481 | s->new_session=0; | |
482 | ||
483 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 484 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
485 | |
486 | ret=1; | |
487 | /* s->server=0; */ | |
488 | s->handshake_func=ssl3_connect; | |
413c4f45 | 489 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
490 | |
491 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
492 | ||
493 | goto end; | |
dfeab068 | 494 | /* break; */ |
d02b48c6 RE |
495 | |
496 | default: | |
497 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
498 | ret= -1; | |
499 | goto end; | |
500 | /* break; */ | |
501 | } | |
502 | ||
503 | /* did we do anything */ | |
504 | if (!s->s3->tmp.reuse_message && !skip) | |
505 | { | |
58964a49 RE |
506 | if (s->debug) |
507 | { | |
508 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
509 | goto end; | |
510 | } | |
d02b48c6 RE |
511 | |
512 | if ((cb != NULL) && (s->state != state)) | |
513 | { | |
514 | new_state=s->state; | |
515 | s->state=state; | |
516 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
517 | s->state=new_state; | |
518 | } | |
519 | } | |
520 | skip=0; | |
521 | } | |
522 | end: | |
4d635a70 | 523 | s->in_handshake--; |
8d6ad9e3 RL |
524 | if (buf != NULL) |
525 | BUF_MEM_free(buf); | |
d02b48c6 RE |
526 | if (cb != NULL) |
527 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
d02b48c6 RE |
528 | return(ret); |
529 | } | |
530 | ||
531 | ||
36d16f8e | 532 | int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
533 | { |
534 | unsigned char *buf; | |
535 | unsigned char *p,*d; | |
413c4f45 | 536 | int i,j; |
d02b48c6 | 537 | unsigned long Time,l; |
413c4f45 | 538 | SSL_COMP *comp; |
d02b48c6 RE |
539 | |
540 | buf=(unsigned char *)s->init_buf->data; | |
541 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
542 | { | |
543 | if ((s->session == NULL) || | |
dfeab068 RE |
544 | (s->session->ssl_version != s->version) || |
545 | (s->session->not_resumable)) | |
d02b48c6 RE |
546 | { |
547 | if (!ssl_get_new_session(s,0)) | |
548 | goto err; | |
549 | } | |
550 | /* else use the pre-loaded session */ | |
551 | ||
552 | p=s->s3->client_random; | |
553 | Time=time(NULL); /* Time */ | |
554 | l2n(Time,p); | |
59b6836a | 555 | RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4); |
d02b48c6 RE |
556 | |
557 | /* Do the message type and length last */ | |
558 | d=p= &(buf[4]); | |
559 | ||
58964a49 RE |
560 | *(p++)=s->version>>8; |
561 | *(p++)=s->version&0xff; | |
413c4f45 | 562 | s->client_version=s->version; |
d02b48c6 RE |
563 | |
564 | /* Random stuff */ | |
565 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
566 | p+=SSL3_RANDOM_SIZE; | |
567 | ||
568 | /* Session ID */ | |
569 | if (s->new_session) | |
570 | i=0; | |
571 | else | |
572 | i=s->session->session_id_length; | |
573 | *(p++)=i; | |
574 | if (i != 0) | |
575 | { | |
27545970 | 576 | if (i > (int)sizeof(s->session->session_id)) |
5574e0ed BM |
577 | { |
578 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
579 | goto err; | |
580 | } | |
d02b48c6 RE |
581 | memcpy(p,s->session->session_id,i); |
582 | p+=i; | |
583 | } | |
584 | ||
585 | /* Ciphers supported */ | |
586 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2])); | |
587 | if (i == 0) | |
588 | { | |
589 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
590 | goto err; | |
591 | } | |
592 | s2n(i,p); | |
593 | p+=i; | |
594 | ||
dfeab068 | 595 | /* COMPRESSION */ |
413c4f45 MC |
596 | if (s->ctx->comp_methods == NULL) |
597 | j=0; | |
598 | else | |
f73e07cf | 599 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
600 | *(p++)=1+j; |
601 | for (i=0; i<j; i++) | |
602 | { | |
f73e07cf | 603 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
604 | *(p++)=comp->id; |
605 | } | |
606 | *(p++)=0; /* Add the NULL method */ | |
d02b48c6 RE |
607 | |
608 | l=(p-d); | |
609 | d=buf; | |
610 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
611 | l2n3(l,d); | |
612 | ||
613 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
614 | /* number of bytes to write */ | |
615 | s->init_num=p-buf; | |
616 | s->init_off=0; | |
617 | } | |
618 | ||
619 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
620 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
621 | err: | |
622 | return(-1); | |
623 | } | |
624 | ||
36d16f8e | 625 | int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 626 | { |
f73e07cf | 627 | STACK_OF(SSL_CIPHER) *sk; |
d02b48c6 RE |
628 | SSL_CIPHER *c; |
629 | unsigned char *p,*d; | |
630 | int i,al,ok; | |
631 | unsigned int j; | |
632 | long n; | |
413c4f45 | 633 | SSL_COMP *comp; |
d02b48c6 | 634 | |
36d16f8e | 635 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
636 | SSL3_ST_CR_SRVR_HELLO_A, |
637 | SSL3_ST_CR_SRVR_HELLO_B, | |
36d16f8e | 638 | -1, |
d02b48c6 RE |
639 | 300, /* ?? */ |
640 | &ok); | |
641 | ||
642 | if (!ok) return((int)n); | |
36d16f8e BL |
643 | |
644 | if ( SSL_version(s) == DTLS1_VERSION) | |
645 | { | |
646 | if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) | |
647 | { | |
648 | if ( s->d1->send_cookie == 0) | |
649 | { | |
650 | s->s3->tmp.reuse_message = 1; | |
651 | return 1; | |
652 | } | |
653 | else /* already sent a cookie */ | |
654 | { | |
655 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 656 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
657 | goto f_err; |
658 | } | |
659 | } | |
660 | } | |
661 | ||
662 | if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) | |
663 | { | |
664 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 665 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
666 | goto f_err; |
667 | } | |
668 | ||
48948d53 | 669 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 670 | |
58964a49 | 671 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
672 | { |
673 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
674 | s->version=(s->version&0xff00)|p[1]; |
675 | al=SSL_AD_PROTOCOL_VERSION; | |
676 | goto f_err; | |
d02b48c6 RE |
677 | } |
678 | p+=2; | |
679 | ||
680 | /* load the server hello data */ | |
681 | /* load the server random */ | |
682 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
683 | p+=SSL3_RANDOM_SIZE; | |
684 | ||
685 | /* get the session-id */ | |
686 | j= *(p++); | |
687 | ||
a4f53a1c | 688 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 689 | { |
a4f53a1c BM |
690 | al=SSL_AD_ILLEGAL_PARAMETER; |
691 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
692 | goto f_err; | |
d02b48c6 | 693 | } |
54a656ef | 694 | |
b4cadc6e BL |
695 | if (j != 0 && j == s->session->session_id_length |
696 | && memcmp(p,s->session->session_id,j) == 0) | |
697 | { | |
698 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
699 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
700 | { | |
a4f53a1c | 701 | /* actually a client application bug */ |
b4cadc6e BL |
702 | al=SSL_AD_ILLEGAL_PARAMETER; |
703 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
704 | goto f_err; | |
705 | } | |
706 | s->hit=1; | |
707 | } | |
58964a49 | 708 | else /* a miss or crap from the other end */ |
d02b48c6 | 709 | { |
58964a49 RE |
710 | /* If we were trying for session-id reuse, make a new |
711 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 712 | s->hit=0; |
58964a49 RE |
713 | if (s->session->session_id_length > 0) |
714 | { | |
715 | if (!ssl_get_new_session(s,0)) | |
716 | { | |
717 | al=SSL_AD_INTERNAL_ERROR; | |
718 | goto f_err; | |
719 | } | |
720 | } | |
721 | s->session->session_id_length=j; | |
722 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
723 | } |
724 | p+=j; | |
725 | c=ssl_get_cipher_by_char(s,p); | |
726 | if (c == NULL) | |
727 | { | |
728 | /* unknown cipher */ | |
58964a49 | 729 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
730 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
731 | goto f_err; | |
732 | } | |
733 | p+=ssl_put_cipher_by_char(s,NULL,NULL); | |
734 | ||
735 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 736 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
737 | if (i < 0) |
738 | { | |
739 | /* we did not say we would use this cipher */ | |
58964a49 | 740 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
741 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
742 | goto f_err; | |
743 | } | |
744 | ||
6a8afe22 LJ |
745 | /* Depending on the session caching (internal/external), the cipher |
746 | and/or cipher_id values may not be set. Make sure that | |
747 | cipher_id is set and use it for comparison. */ | |
748 | if (s->session->cipher) | |
749 | s->session->cipher_id = s->session->cipher->id; | |
c5662053 | 750 | if (s->hit && (s->session->cipher_id != c->id)) |
d02b48c6 | 751 | { |
58964a49 | 752 | if (!(s->options & |
d02b48c6 RE |
753 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
754 | { | |
58964a49 | 755 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
756 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
757 | goto f_err; | |
758 | } | |
759 | } | |
760 | s->s3->tmp.new_cipher=c; | |
761 | ||
762 | /* lets get the compression algorithm */ | |
dfeab068 | 763 | /* COMPRESSION */ |
d02b48c6 | 764 | j= *(p++); |
413c4f45 MC |
765 | if (j == 0) |
766 | comp=NULL; | |
767 | else | |
768 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
769 | ||
770 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 771 | { |
58964a49 | 772 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
773 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
774 | goto f_err; | |
775 | } | |
413c4f45 MC |
776 | else |
777 | { | |
778 | s->s3->tmp.new_compression=comp; | |
779 | } | |
d02b48c6 RE |
780 | |
781 | if (p != (d+n)) | |
782 | { | |
783 | /* wrong packet length */ | |
58964a49 | 784 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
785 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
786 | goto err; | |
787 | } | |
788 | ||
789 | return(1); | |
790 | f_err: | |
791 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
792 | err: | |
793 | return(-1); | |
794 | } | |
795 | ||
36d16f8e | 796 | int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
797 | { |
798 | int al,i,ok,ret= -1; | |
799 | unsigned long n,nc,llen,l; | |
800 | X509 *x=NULL; | |
875a644a RL |
801 | const unsigned char *q,*p; |
802 | unsigned char *d; | |
f73e07cf | 803 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 804 | SESS_CERT *sc; |
d02b48c6 | 805 | EVP_PKEY *pkey=NULL; |
57376542 | 806 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 | 807 | |
36d16f8e | 808 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
809 | SSL3_ST_CR_CERT_A, |
810 | SSL3_ST_CR_CERT_B, | |
811 | -1, | |
c0f5dd07 | 812 | s->max_cert_list, |
d02b48c6 RE |
813 | &ok); |
814 | ||
815 | if (!ok) return((int)n); | |
816 | ||
817 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) | |
818 | { | |
819 | s->s3->tmp.reuse_message=1; | |
820 | return(1); | |
821 | } | |
822 | ||
823 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
824 | { | |
58964a49 | 825 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
826 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
827 | goto f_err; | |
828 | } | |
875a644a | 829 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 830 | |
f73e07cf | 831 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
832 | { |
833 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
834 | goto err; | |
835 | } | |
836 | ||
837 | n2l3(p,llen); | |
838 | if (llen+3 != n) | |
839 | { | |
58964a49 | 840 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
841 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
842 | goto f_err; | |
843 | } | |
844 | for (nc=0; nc<llen; ) | |
845 | { | |
846 | n2l3(p,l); | |
847 | if ((l+nc+3) > llen) | |
848 | { | |
58964a49 | 849 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
850 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
851 | goto f_err; | |
852 | } | |
853 | ||
854 | q=p; | |
855 | x=d2i_X509(NULL,&q,l); | |
856 | if (x == NULL) | |
857 | { | |
58964a49 | 858 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
859 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
860 | goto f_err; | |
861 | } | |
862 | if (q != (p+l)) | |
863 | { | |
58964a49 | 864 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
865 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
866 | goto f_err; | |
867 | } | |
f73e07cf | 868 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
869 | { |
870 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
871 | goto err; | |
872 | } | |
873 | x=NULL; | |
874 | nc+=l+3; | |
875 | p=q; | |
876 | } | |
877 | ||
878 | i=ssl_verify_cert_chain(s,sk); | |
82d5d46c RL |
879 | if ((s->verify_mode != SSL_VERIFY_NONE) && (!i) |
880 | #ifndef OPENSSL_NO_KRB5 | |
57376542 BM |
881 | && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK)) |
882 | != (SSL_aKRB5|SSL_kKRB5) | |
82d5d46c | 883 | #endif /* OPENSSL_NO_KRB5 */ |
57376542 | 884 | ) |
d02b48c6 RE |
885 | { |
886 | al=ssl_verify_alarm_type(s->verify_result); | |
887 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
888 | goto f_err; | |
889 | } | |
1fab73ac | 890 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 891 | |
b56bce4f BM |
892 | sc=ssl_sess_cert_new(); |
893 | if (sc == NULL) goto err; | |
d02b48c6 | 894 | |
b56bce4f BM |
895 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
896 | s->session->sess_cert=sc; | |
d02b48c6 | 897 | |
b56bce4f | 898 | sc->cert_chain=sk; |
98e04f9e BM |
899 | /* Inconsistency alert: cert_chain does include the peer's |
900 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 901 | x=sk_X509_value(sk,0); |
d02b48c6 | 902 | sk=NULL; |
2a1ef754 | 903 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
904 | |
905 | pkey=X509_get_pubkey(x); | |
906 | ||
57376542 BM |
907 | /* VRS: allow null cert if auth == KRB5 */ |
908 | need_cert = ((s->s3->tmp.new_cipher->algorithms | |
909 | & (SSL_MKEY_MASK|SSL_AUTH_MASK)) | |
910 | == (SSL_aKRB5|SSL_kKRB5))? 0: 1; | |
f9b3bff6 RL |
911 | |
912 | #ifdef KSSL_DEBUG | |
913 | printf("pkey,x = %p, %p\n", pkey,x); | |
914 | printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); | |
915 | printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name, | |
57376542 | 916 | s->s3->tmp.new_cipher->algorithms, need_cert); |
f9b3bff6 RL |
917 | #endif /* KSSL_DEBUG */ |
918 | ||
2a1ef754 | 919 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
920 | { |
921 | x=NULL; | |
922 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
923 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
924 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
925 | goto f_err; |
926 | } | |
927 | ||
928 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 929 | if (need_cert && i < 0) |
d02b48c6 RE |
930 | { |
931 | x=NULL; | |
932 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
933 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
934 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
935 | goto f_err; |
936 | } | |
937 | ||
57376542 BM |
938 | if (need_cert) |
939 | { | |
940 | sc->peer_cert_type=i; | |
941 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
942 | /* Why would the following ever happen? | |
943 | * We just created sc a couple of lines ago. */ | |
944 | if (sc->peer_pkeys[i].x509 != NULL) | |
945 | X509_free(sc->peer_pkeys[i].x509); | |
946 | sc->peer_pkeys[i].x509=x; | |
947 | sc->peer_key= &(sc->peer_pkeys[i]); | |
948 | ||
949 | if (s->session->peer != NULL) | |
950 | X509_free(s->session->peer); | |
951 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
952 | s->session->peer=x; | |
953 | } | |
954 | else | |
955 | { | |
956 | sc->peer_cert_type=i; | |
957 | sc->peer_key= NULL; | |
958 | ||
959 | if (s->session->peer != NULL) | |
960 | X509_free(s->session->peer); | |
961 | s->session->peer=NULL; | |
962 | } | |
0dd2254d | 963 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
964 | |
965 | x=NULL; | |
966 | ret=1; | |
967 | ||
968 | if (0) | |
969 | { | |
970 | f_err: | |
971 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
972 | } | |
973 | err: | |
a8236c8c DSH |
974 | EVP_PKEY_free(pkey); |
975 | X509_free(x); | |
f73e07cf | 976 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
977 | return(ret); |
978 | } | |
979 | ||
36d16f8e | 980 | int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 981 | { |
bc36ee62 | 982 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
983 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
984 | #endif | |
985 | EVP_MD_CTX md_ctx; | |
986 | unsigned char *param,*p; | |
987 | int al,i,j,param_len,ok; | |
988 | long n,alg; | |
989 | EVP_PKEY *pkey=NULL; | |
bc36ee62 | 990 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 991 | RSA *rsa=NULL; |
79df9d62 | 992 | #endif |
bc36ee62 | 993 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 994 | DH *dh=NULL; |
58964a49 | 995 | #endif |
ea262260 BM |
996 | #ifndef OPENSSL_NO_ECDH |
997 | EC_KEY *ecdh = NULL; | |
998 | BN_CTX *bn_ctx = NULL; | |
999 | EC_POINT *srvr_ecpoint = NULL; | |
1000 | int curve_nid = 0; | |
1001 | int encoded_pt_len = 0; | |
1002 | #endif | |
d02b48c6 | 1003 | |
37a7cd1a BM |
1004 | /* use same message size as in ssl3_get_certificate_request() |
1005 | * as ServerKeyExchange message may be skipped */ | |
36d16f8e | 1006 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1007 | SSL3_ST_CR_KEY_EXCH_A, |
1008 | SSL3_ST_CR_KEY_EXCH_B, | |
1009 | -1, | |
c0f5dd07 | 1010 | s->max_cert_list, |
d02b48c6 RE |
1011 | &ok); |
1012 | ||
1013 | if (!ok) return((int)n); | |
1014 | ||
1015 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
1016 | { | |
1017 | s->s3->tmp.reuse_message=1; | |
1018 | return(1); | |
1019 | } | |
1020 | ||
48948d53 | 1021 | param=p=(unsigned char *)s->init_msg; |
d02b48c6 | 1022 | |
9d5cceac | 1023 | if (s->session->sess_cert != NULL) |
d02b48c6 | 1024 | { |
bc36ee62 | 1025 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1026 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1027 | { |
b56bce4f BM |
1028 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1029 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1030 | } |
1031 | #endif | |
bc36ee62 | 1032 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1033 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1034 | { |
b56bce4f BM |
1035 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1036 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1037 | } |
ea262260 BM |
1038 | #endif |
1039 | #ifndef OPENSSL_NO_ECDH | |
1040 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1041 | { | |
1042 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1043 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1044 | } | |
d02b48c6 RE |
1045 | #endif |
1046 | } | |
1047 | else | |
1048 | { | |
b56bce4f | 1049 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1050 | } |
1051 | ||
1052 | param_len=0; | |
1053 | alg=s->s3->tmp.new_cipher->algorithms; | |
dbad1690 | 1054 | EVP_MD_CTX_init(&md_ctx); |
d02b48c6 | 1055 | |
bc36ee62 | 1056 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1057 | if (alg & SSL_kRSA) |
1058 | { | |
1059 | if ((rsa=RSA_new()) == NULL) | |
1060 | { | |
1061 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1062 | goto err; | |
1063 | } | |
1064 | n2s(p,i); | |
1065 | param_len=i+2; | |
1066 | if (param_len > n) | |
1067 | { | |
58964a49 | 1068 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1069 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1070 | goto f_err; | |
1071 | } | |
1072 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
1073 | { | |
1074 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1075 | goto err; | |
1076 | } | |
1077 | p+=i; | |
1078 | ||
1079 | n2s(p,i); | |
1080 | param_len+=i+2; | |
1081 | if (param_len > n) | |
1082 | { | |
58964a49 | 1083 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1084 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1085 | goto f_err; | |
1086 | } | |
1087 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
1088 | { | |
1089 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1090 | goto err; | |
1091 | } | |
1092 | p+=i; | |
1093 | n-=param_len; | |
1094 | ||
d02b48c6 RE |
1095 | /* this should be because we are using an export cipher */ |
1096 | if (alg & SSL_aRSA) | |
b56bce4f | 1097 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1098 | else |
1099 | { | |
5277d7cb | 1100 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1101 | goto err; |
1102 | } | |
b56bce4f | 1103 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1104 | rsa=NULL; |
d02b48c6 | 1105 | } |
bc36ee62 | 1106 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1107 | if (0) |
1108 | ; | |
d02b48c6 | 1109 | #endif |
bc36ee62 | 1110 | #ifndef OPENSSL_NO_DH |
3f2599d9 | 1111 | else if (alg & SSL_kEDH) |
d02b48c6 RE |
1112 | { |
1113 | if ((dh=DH_new()) == NULL) | |
1114 | { | |
1115 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1116 | goto err; | |
1117 | } | |
1118 | n2s(p,i); | |
1119 | param_len=i+2; | |
1120 | if (param_len > n) | |
1121 | { | |
58964a49 | 1122 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1123 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1124 | goto f_err; | |
1125 | } | |
1126 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
1127 | { | |
1128 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1129 | goto err; | |
1130 | } | |
1131 | p+=i; | |
1132 | ||
1133 | n2s(p,i); | |
1134 | param_len+=i+2; | |
1135 | if (param_len > n) | |
1136 | { | |
58964a49 | 1137 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1138 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1139 | goto f_err; | |
1140 | } | |
1141 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
1142 | { | |
1143 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1144 | goto err; | |
1145 | } | |
1146 | p+=i; | |
1147 | ||
1148 | n2s(p,i); | |
1149 | param_len+=i+2; | |
1150 | if (param_len > n) | |
1151 | { | |
58964a49 | 1152 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1153 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1154 | goto f_err; | |
1155 | } | |
1156 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
1157 | { | |
1158 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1159 | goto err; | |
1160 | } | |
1161 | p+=i; | |
1162 | n-=param_len; | |
1163 | ||
bc36ee62 | 1164 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1165 | if (alg & SSL_aRSA) |
b56bce4f | 1166 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1167 | #else |
1168 | if (0) | |
1169 | ; | |
d02b48c6 | 1170 | #endif |
bc36ee62 | 1171 | #ifndef OPENSSL_NO_DSA |
3f2599d9 | 1172 | else if (alg & SSL_aDSS) |
b56bce4f | 1173 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1174 | #endif |
1175 | /* else anonymous DH, so no certificate or pkey. */ | |
1176 | ||
b56bce4f | 1177 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1178 | dh=NULL; |
d02b48c6 RE |
1179 | } |
1180 | else if ((alg & SSL_kDHr) || (alg & SSL_kDHd)) | |
1181 | { | |
58964a49 | 1182 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1183 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1184 | goto f_err; | |
1185 | } | |
bc36ee62 | 1186 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1187 | |
1188 | #ifndef OPENSSL_NO_ECDH | |
1189 | else if (alg & SSL_kECDHE) | |
1190 | { | |
1191 | if ((ecdh=EC_KEY_new()) == NULL) | |
1192 | { | |
1193 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1194 | goto err; | |
1195 | } | |
1196 | ||
1197 | /* Extract elliptic curve parameters and the | |
1198 | * server's ephemeral ECDH public key. | |
1199 | * Keep accumulating lengths of various components in | |
1200 | * param_len and make sure it never exceeds n. | |
1201 | */ | |
1202 | ||
1203 | /* XXX: For now we only support named (not generic) curves | |
1204 | * and the ECParameters in this case is just two bytes. | |
1205 | */ | |
1206 | param_len=2; | |
1207 | if ((param_len > n) || | |
1208 | (*p != NAMED_CURVE_TYPE) || | |
1209 | ((curve_nid = curve_id2nid(*(p + 1))) == 0)) | |
1210 | { | |
1211 | al=SSL_AD_INTERNAL_ERROR; | |
1212 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1213 | goto f_err; | |
1214 | } | |
1215 | ||
1216 | if (!(ecdh->group=EC_GROUP_new_by_nid(curve_nid))) | |
1217 | { | |
1218 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1219 | goto err; | |
1220 | } | |
1221 | ||
1222 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
1223 | (EC_GROUP_get_degree(ecdh->group) > 163)) | |
1224 | { | |
1225 | al=SSL_AD_EXPORT_RESTRICTION; | |
1226 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1227 | goto f_err; | |
1228 | } | |
1229 | ||
1230 | p+=2; | |
1231 | ||
1232 | /* Next, get the encoded ECPoint */ | |
1233 | if (((srvr_ecpoint = EC_POINT_new(ecdh->group)) == NULL) || | |
1234 | ((bn_ctx = BN_CTX_new()) == NULL)) | |
1235 | { | |
1236 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1237 | goto err; | |
1238 | } | |
1239 | ||
1240 | encoded_pt_len = *p; /* length of encoded point */ | |
1241 | p+=1; | |
1242 | param_len += (1 + encoded_pt_len); | |
1243 | if ((param_len > n) || | |
1244 | (EC_POINT_oct2point(ecdh->group, srvr_ecpoint, | |
1245 | p, encoded_pt_len, bn_ctx) == 0)) | |
1246 | { | |
1247 | al=SSL_AD_DECODE_ERROR; | |
1248 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); | |
1249 | goto f_err; | |
1250 | } | |
1251 | ||
1252 | n-=param_len; | |
1253 | p+=encoded_pt_len; | |
1254 | ||
1255 | /* The ECC/TLS specification does not mention | |
1256 | * the use of DSA to sign ECParameters in the server | |
1257 | * key exchange message. We do support RSA and ECDSA. | |
1258 | */ | |
1259 | if (0) ; | |
1260 | #ifndef OPENSSL_NO_RSA | |
1261 | else if (alg & SSL_aRSA) | |
1262 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); | |
1263 | #endif | |
1264 | #ifndef OPENSSL_NO_ECDSA | |
1265 | else if (alg & SSL_aECDSA) | |
1266 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
1267 | #endif | |
1268 | /* else anonymous ECDH, so no certificate or pkey. */ | |
1269 | ecdh->pub_key = srvr_ecpoint; | |
1270 | s->session->sess_cert->peer_ecdh_tmp=ecdh; | |
1271 | ecdh=NULL; | |
1272 | BN_CTX_free(bn_ctx); | |
1273 | srvr_ecpoint = NULL; | |
1274 | } | |
1275 | else if (alg & SSL_kECDH) | |
1276 | { | |
1277 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1278 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1279 | goto f_err; | |
1280 | } | |
1281 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 RE |
1282 | if (alg & SSL_aFZA) |
1283 | { | |
1284 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1285 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); | |
1286 | goto f_err; | |
1287 | } | |
1288 | ||
d02b48c6 RE |
1289 | |
1290 | /* p points to the next byte, there are 'n' bytes left */ | |
1291 | ||
d02b48c6 RE |
1292 | /* if it was signed, check the signature */ |
1293 | if (pkey != NULL) | |
1294 | { | |
1295 | n2s(p,i); | |
1296 | n-=2; | |
1297 | j=EVP_PKEY_size(pkey); | |
1298 | ||
1299 | if ((i != n) || (n > j) || (n <= 0)) | |
1300 | { | |
1301 | /* wrong packet length */ | |
58964a49 | 1302 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1303 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1304 | goto f_err; |
d02b48c6 RE |
1305 | } |
1306 | ||
bc36ee62 | 1307 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1308 | if (pkey->type == EVP_PKEY_RSA) |
1309 | { | |
1310 | int num; | |
1311 | ||
1312 | j=0; | |
1313 | q=md_buf; | |
1314 | for (num=2; num > 0; num--) | |
1315 | { | |
20d2186c DSH |
1316 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1317 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1318 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1319 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1320 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
20d2186c | 1321 | EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i); |
d02b48c6 RE |
1322 | q+=i; |
1323 | j+=i; | |
1324 | } | |
1c80019a DSH |
1325 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1326 | pkey->pkey.rsa); | |
1327 | if (i < 0) | |
d02b48c6 | 1328 | { |
58964a49 | 1329 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1330 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1331 | goto f_err; | |
1332 | } | |
1c80019a | 1333 | if (i == 0) |
d02b48c6 RE |
1334 | { |
1335 | /* bad signature */ | |
58964a49 | 1336 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1337 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1338 | goto f_err; | |
1339 | } | |
1340 | } | |
1341 | else | |
1342 | #endif | |
bc36ee62 | 1343 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
1344 | if (pkey->type == EVP_PKEY_DSA) |
1345 | { | |
1346 | /* lets do DSS */ | |
20d2186c | 1347 | EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL); |
d02b48c6 RE |
1348 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1349 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1350 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1351 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1352 | { | |
1353 | /* bad signature */ | |
58964a49 | 1354 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1355 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1356 | goto f_err; | |
1357 | } | |
1358 | } | |
1359 | else | |
ea262260 BM |
1360 | #endif |
1361 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 1362 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
1363 | { |
1364 | /* let's do ECDSA */ | |
1365 | EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL); | |
1366 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1367 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1368 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1369 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1370 | { | |
1371 | /* bad signature */ | |
1372 | al=SSL_AD_DECRYPT_ERROR; | |
1373 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1374 | goto f_err; | |
1375 | } | |
1376 | } | |
1377 | else | |
d02b48c6 RE |
1378 | #endif |
1379 | { | |
5277d7cb | 1380 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1381 | goto err; |
1382 | } | |
1383 | } | |
1384 | else | |
1385 | { | |
1386 | /* still data left over */ | |
1387 | if (!(alg & SSL_aNULL)) | |
1388 | { | |
5277d7cb | 1389 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1390 | goto err; |
1391 | } | |
1392 | if (n != 0) | |
1393 | { | |
58964a49 | 1394 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1395 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1396 | goto f_err; | |
1397 | } | |
1398 | } | |
a8236c8c | 1399 | EVP_PKEY_free(pkey); |
dbad1690 | 1400 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1401 | return(1); |
1402 | f_err: | |
1403 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1404 | err: | |
a8236c8c | 1405 | EVP_PKEY_free(pkey); |
bc36ee62 | 1406 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1407 | if (rsa != NULL) |
1408 | RSA_free(rsa); | |
1409 | #endif | |
bc36ee62 | 1410 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1411 | if (dh != NULL) |
1412 | DH_free(dh); | |
ea262260 BM |
1413 | #endif |
1414 | #ifndef OPENSSL_NO_ECDH | |
1415 | BN_CTX_free(bn_ctx); | |
1416 | EC_POINT_free(srvr_ecpoint); | |
1417 | if (ecdh != NULL) | |
1418 | EC_KEY_free(ecdh); | |
6b521df3 | 1419 | #endif |
dbad1690 | 1420 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1421 | return(-1); |
1422 | } | |
1423 | ||
36d16f8e | 1424 | int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1425 | { |
1426 | int ok,ret=0; | |
58964a49 RE |
1427 | unsigned long n,nc,l; |
1428 | unsigned int llen,ctype_num,i; | |
d02b48c6 | 1429 | X509_NAME *xn=NULL; |
875a644a RL |
1430 | const unsigned char *p,*q; |
1431 | unsigned char *d; | |
f73e07cf | 1432 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 | 1433 | |
36d16f8e | 1434 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1435 | SSL3_ST_CR_CERT_REQ_A, |
1436 | SSL3_ST_CR_CERT_REQ_B, | |
1437 | -1, | |
c0f5dd07 | 1438 | s->max_cert_list, |
d02b48c6 RE |
1439 | &ok); |
1440 | ||
1441 | if (!ok) return((int)n); | |
1442 | ||
1443 | s->s3->tmp.cert_req=0; | |
1444 | ||
1445 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1446 | { | |
1447 | s->s3->tmp.reuse_message=1; | |
1448 | return(1); | |
1449 | } | |
1450 | ||
1451 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1452 | { | |
58964a49 | 1453 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1454 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1455 | goto err; | |
1456 | } | |
1457 | ||
58964a49 RE |
1458 | /* TLS does not like anon-DH with client cert */ |
1459 | if (s->version > SSL3_VERSION) | |
1460 | { | |
1461 | l=s->s3->tmp.new_cipher->algorithms; | |
1462 | if (l & SSL_aNULL) | |
1463 | { | |
1464 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1465 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1466 | goto err; | |
1467 | } | |
1468 | } | |
1469 | ||
875a644a | 1470 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1471 | |
f73e07cf | 1472 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1473 | { |
1474 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1475 | goto err; | |
1476 | } | |
1477 | ||
1478 | /* get the certificate types */ | |
1479 | ctype_num= *(p++); | |
1480 | if (ctype_num > SSL3_CT_NUMBER) | |
1481 | ctype_num=SSL3_CT_NUMBER; | |
1482 | for (i=0; i<ctype_num; i++) | |
1483 | s->s3->tmp.ctype[i]= p[i]; | |
1484 | p+=ctype_num; | |
1485 | ||
1486 | /* get the CA RDNs */ | |
1487 | n2s(p,llen); | |
dfeab068 RE |
1488 | #if 0 |
1489 | { | |
1490 | FILE *out; | |
1491 | out=fopen("/tmp/vsign.der","w"); | |
1492 | fwrite(p,1,llen,out); | |
1493 | fclose(out); | |
1494 | } | |
1495 | #endif | |
1496 | ||
d02b48c6 RE |
1497 | if ((llen+ctype_num+2+1) != n) |
1498 | { | |
58964a49 | 1499 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1500 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1501 | goto err; | |
1502 | } | |
1503 | ||
1504 | for (nc=0; nc<llen; ) | |
1505 | { | |
1506 | n2s(p,l); | |
1507 | if ((l+nc+2) > llen) | |
1508 | { | |
58964a49 | 1509 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 1510 | goto cont; /* netscape bugs */ |
58964a49 | 1511 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1512 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
1513 | goto err; | |
1514 | } | |
1515 | ||
1516 | q=p; | |
1517 | ||
1518 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
1519 | { | |
657e60fa | 1520 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 1521 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
1522 | goto cont; |
1523 | else | |
1524 | { | |
58964a49 | 1525 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1526 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
1527 | goto err; | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | if (q != (p+l)) | |
1532 | { | |
58964a49 | 1533 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1534 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
1535 | goto err; | |
1536 | } | |
f73e07cf | 1537 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
1538 | { |
1539 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1540 | goto err; | |
1541 | } | |
1542 | ||
1543 | p+=l; | |
1544 | nc+=l+2; | |
1545 | } | |
1546 | ||
1547 | if (0) | |
1548 | { | |
1549 | cont: | |
1550 | ERR_clear_error(); | |
1551 | } | |
1552 | ||
657e60fa | 1553 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
1554 | s->s3->tmp.cert_req=1; |
1555 | s->s3->tmp.ctype_num=ctype_num; | |
1556 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 1557 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
1558 | s->s3->tmp.ca_names=ca_sk; |
1559 | ca_sk=NULL; | |
1560 | ||
1561 | ret=1; | |
1562 | err: | |
f73e07cf | 1563 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
1564 | return(ret); |
1565 | } | |
1566 | ||
ccd86b68 | 1567 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
1568 | { |
1569 | return(X509_NAME_cmp(*a,*b)); | |
1570 | } | |
1571 | ||
36d16f8e | 1572 | int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
1573 | { |
1574 | int ok,ret=0; | |
1575 | long n; | |
1576 | ||
36d16f8e | 1577 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1578 | SSL3_ST_CR_SRVR_DONE_A, |
1579 | SSL3_ST_CR_SRVR_DONE_B, | |
1580 | SSL3_MT_SERVER_DONE, | |
1581 | 30, /* should be very small, like 0 :-) */ | |
1582 | &ok); | |
1583 | ||
1584 | if (!ok) return((int)n); | |
1585 | if (n > 0) | |
1586 | { | |
1587 | /* should contain no data */ | |
58964a49 | 1588 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 1589 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 1590 | return -1; |
d02b48c6 RE |
1591 | } |
1592 | ret=1; | |
1593 | return(ret); | |
1594 | } | |
1595 | ||
176f31dd BM |
1596 | |
1597 | static const int KDF1_SHA1_len = 20; | |
965a1cb9 | 1598 | static void *KDF1_SHA1(const void *in, size_t inlen, void *out, size_t *outlen) |
176f31dd BM |
1599 | { |
1600 | #ifndef OPENSSL_NO_SHA | |
965a1cb9 | 1601 | if (*outlen < SHA_DIGEST_LENGTH) |
176f31dd | 1602 | return NULL; |
965a1cb9 NL |
1603 | else |
1604 | *outlen = SHA_DIGEST_LENGTH; | |
176f31dd BM |
1605 | return SHA1(in, inlen, out); |
1606 | #else | |
1607 | return NULL; | |
1608 | #endif | |
1609 | } | |
1610 | ||
36d16f8e | 1611 | int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 1612 | { |
79df9d62 | 1613 | unsigned char *p,*d; |
d02b48c6 RE |
1614 | int n; |
1615 | unsigned long l; | |
bc36ee62 | 1616 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 1617 | unsigned char *q; |
d02b48c6 | 1618 | EVP_PKEY *pkey=NULL; |
79df9d62 | 1619 | #endif |
bc36ee62 | 1620 | #ifndef OPENSSL_NO_KRB5 |
57376542 | 1621 | KSSL_ERR kssl_err; |
bc36ee62 | 1622 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
1623 | #ifndef OPENSSL_NO_ECDH |
1624 | EC_KEY *clnt_ecdh = NULL; | |
1625 | EC_POINT *srvr_ecpoint = NULL; | |
1626 | EVP_PKEY *srvr_pub_pkey = NULL; | |
1627 | unsigned char *encodedPoint = NULL; | |
1628 | int encoded_pt_len = 0; | |
1629 | BN_CTX * bn_ctx = NULL; | |
1630 | #endif | |
d02b48c6 RE |
1631 | |
1632 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
1633 | { | |
1634 | d=(unsigned char *)s->init_buf->data; | |
1635 | p= &(d[4]); | |
1636 | ||
1637 | l=s->s3->tmp.new_cipher->algorithms; | |
1638 | ||
57376542 BM |
1639 | /* Fool emacs indentation */ |
1640 | if (0) {} | |
bc36ee62 | 1641 | #ifndef OPENSSL_NO_RSA |
f9b3bff6 | 1642 | else if (l & SSL_kRSA) |
d02b48c6 RE |
1643 | { |
1644 | RSA *rsa; | |
dfeab068 | 1645 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 1646 | |
b56bce4f BM |
1647 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
1648 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
1649 | else |
1650 | { | |
b56bce4f | 1651 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1652 | if ((pkey == NULL) || |
1653 | (pkey->type != EVP_PKEY_RSA) || | |
1654 | (pkey->pkey.rsa == NULL)) | |
1655 | { | |
5277d7cb | 1656 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1657 | goto err; |
1658 | } | |
1659 | rsa=pkey->pkey.rsa; | |
50596582 | 1660 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1661 | } |
1662 | ||
413c4f45 MC |
1663 | tmp_buf[0]=s->client_version>>8; |
1664 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 1665 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 1666 | goto err; |
d02b48c6 | 1667 | |
54a656ef | 1668 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 1669 | |
58964a49 RE |
1670 | q=p; |
1671 | /* Fix buf for TLS and beyond */ | |
1672 | if (s->version > SSL3_VERSION) | |
1673 | p+=2; | |
54a656ef | 1674 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 1675 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
1676 | #ifdef PKCS1_CHECK |
1677 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
1678 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
1679 | #endif | |
d02b48c6 RE |
1680 | if (n <= 0) |
1681 | { | |
1682 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
1683 | goto err; | |
1684 | } | |
1685 | ||
58964a49 RE |
1686 | /* Fix buf for TLS and beyond */ |
1687 | if (s->version > SSL3_VERSION) | |
1688 | { | |
1689 | s2n(n,q); | |
1690 | n+=2; | |
1691 | } | |
1692 | ||
d02b48c6 | 1693 | s->session->master_key_length= |
58964a49 | 1694 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 1695 | s->session->master_key, |
54a656ef | 1696 | tmp_buf,sizeof tmp_buf); |
4579924b | 1697 | OPENSSL_cleanse(tmp_buf,sizeof tmp_buf); |
d02b48c6 | 1698 | } |
f9b3bff6 | 1699 | #endif |
bc36ee62 | 1700 | #ifndef OPENSSL_NO_KRB5 |
f9b3bff6 | 1701 | else if (l & SSL_kKRB5) |
57376542 BM |
1702 | { |
1703 | krb5_error_code krb5rc; | |
1704 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
1705 | /* krb5_data krb5_ap_req; */ | |
1706 | krb5_data *enc_ticket; | |
1707 | krb5_data authenticator, *authp = NULL; | |
2a1ef754 RL |
1708 | EVP_CIPHER_CTX ciph_ctx; |
1709 | EVP_CIPHER *enc = NULL; | |
1710 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
1711 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
1712 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
1713 | + EVP_MAX_IV_LENGTH]; | |
1714 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 1715 | |
de941e28 DSH |
1716 | EVP_CIPHER_CTX_init(&ciph_ctx); |
1717 | ||
f9b3bff6 | 1718 | #ifdef KSSL_DEBUG |
57376542 BM |
1719 | printf("ssl3_send_client_key_exchange(%lx & %lx)\n", |
1720 | l, SSL_kKRB5); | |
f9b3bff6 RL |
1721 | #endif /* KSSL_DEBUG */ |
1722 | ||
2a1ef754 RL |
1723 | authp = NULL; |
1724 | #ifdef KRB5SENDAUTH | |
1725 | if (KRB5SENDAUTH) authp = &authenticator; | |
1726 | #endif /* KRB5SENDAUTH */ | |
1727 | ||
57376542 | 1728 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, |
2a1ef754 RL |
1729 | &kssl_err); |
1730 | enc = kssl_map_enc(kssl_ctx->enctype); | |
57376542 BM |
1731 | if (enc == NULL) |
1732 | goto err; | |
f9b3bff6 | 1733 | #ifdef KSSL_DEBUG |
57376542 BM |
1734 | { |
1735 | printf("kssl_cget_tkt rtn %d\n", krb5rc); | |
1736 | if (krb5rc && kssl_err.text) | |
2a1ef754 | 1737 | printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
57376542 | 1738 | } |
f9b3bff6 RL |
1739 | #endif /* KSSL_DEBUG */ |
1740 | ||
57376542 BM |
1741 | if (krb5rc) |
1742 | { | |
1743 | ssl3_send_alert(s,SSL3_AL_FATAL, | |
2a1ef754 | 1744 | SSL_AD_HANDSHAKE_FAILURE); |
57376542 | 1745 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2a1ef754 | 1746 | kssl_err.reason); |
57376542 BM |
1747 | goto err; |
1748 | } | |
f9b3bff6 | 1749 | |
2a1ef754 RL |
1750 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
1751 | ** in place of RFC 2712 KerberosWrapper, as in: | |
1752 | ** | |
57376542 BM |
1753 | ** Send ticket (copy to *p, set n = length) |
1754 | ** n = krb5_ap_req.length; | |
1755 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
1756 | ** if (krb5_ap_req.data) | |
1757 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
1758 | ** | |
2a1ef754 RL |
1759 | ** Now using real RFC 2712 KerberosWrapper |
1760 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
1761 | ** Note: 2712 "opaque" types are here replaced | |
1762 | ** with a 2-byte length followed by the value. | |
1763 | ** Example: | |
1764 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
1765 | ** Where "xx xx" = length bytes. Shown here with | |
1766 | ** optional authenticator omitted. | |
1767 | */ | |
1768 | ||
1769 | /* KerberosWrapper.Ticket */ | |
1770 | s2n(enc_ticket->length,p); | |
1771 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
1772 | p+= enc_ticket->length; | |
1773 | n = enc_ticket->length + 2; | |
1774 | ||
1775 | /* KerberosWrapper.Authenticator */ | |
1776 | if (authp && authp->length) | |
1777 | { | |
1778 | s2n(authp->length,p); | |
1779 | memcpy(p, authp->data, authp->length); | |
1780 | p+= authp->length; | |
1781 | n+= authp->length + 2; | |
1782 | ||
1783 | free(authp->data); | |
1784 | authp->data = NULL; | |
1785 | authp->length = 0; | |
1786 | } | |
1787 | else | |
1788 | { | |
1789 | s2n(0,p);/* null authenticator length */ | |
1790 | n+=2; | |
1791 | } | |
1792 | ||
54a656ef | 1793 | if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0) |
2a1ef754 RL |
1794 | goto err; |
1795 | ||
1796 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 1797 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
1798 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
1799 | ** kssl_ctx->length); | |
581f1c84 | 1800 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
1801 | */ |
1802 | ||
54a656ef | 1803 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
1804 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
1805 | kssl_ctx->key,iv); | |
2a1ef754 | 1806 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 1807 | sizeof tmp_buf); |
581f1c84 | 1808 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 1809 | outl += padl; |
5574e0ed BM |
1810 | if (outl > sizeof epms) |
1811 | { | |
1812 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
1813 | goto err; | |
1814 | } | |
2a1ef754 RL |
1815 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
1816 | ||
1817 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
1818 | s2n(outl,p); | |
1819 | memcpy(p, epms, outl); | |
1820 | p+=outl; | |
1821 | n+=outl + 2; | |
1822 | ||
57376542 BM |
1823 | s->session->master_key_length= |
1824 | s->method->ssl3_enc->generate_master_secret(s, | |
2a1ef754 | 1825 | s->session->master_key, |
54a656ef | 1826 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 1827 | |
4579924b RL |
1828 | OPENSSL_cleanse(tmp_buf, sizeof tmp_buf); |
1829 | OPENSSL_cleanse(epms, outl); | |
57376542 | 1830 | } |
d02b48c6 | 1831 | #endif |
bc36ee62 | 1832 | #ifndef OPENSSL_NO_DH |
f9b3bff6 | 1833 | else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
1834 | { |
1835 | DH *dh_srvr,*dh_clnt; | |
1836 | ||
b56bce4f BM |
1837 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
1838 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
1839 | else |
1840 | { | |
1841 | /* we get them from the cert */ | |
58964a49 | 1842 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1843 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
1844 | goto err; | |
1845 | } | |
1846 | ||
1847 | /* generate a new random key */ | |
1848 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
1849 | { | |
1850 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1851 | goto err; | |
1852 | } | |
1853 | if (!DH_generate_key(dh_clnt)) | |
1854 | { | |
1855 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1856 | goto err; | |
1857 | } | |
1858 | ||
1859 | /* use the 'p' output buffer for the DH key, but | |
1860 | * make sure to clear it out afterwards */ | |
58964a49 | 1861 | |
d02b48c6 | 1862 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 1863 | |
d02b48c6 RE |
1864 | if (n <= 0) |
1865 | { | |
1866 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1867 | goto err; | |
1868 | } | |
1869 | ||
1870 | /* generate master key from the result */ | |
1871 | s->session->master_key_length= | |
58964a49 | 1872 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1873 | s->session->master_key,p,n); |
1874 | /* clean up */ | |
1875 | memset(p,0,n); | |
1876 | ||
1877 | /* send off the data */ | |
1878 | n=BN_num_bytes(dh_clnt->pub_key); | |
1879 | s2n(n,p); | |
1880 | BN_bn2bin(dh_clnt->pub_key,p); | |
1881 | n+=2; | |
1882 | ||
1883 | DH_free(dh_clnt); | |
1884 | ||
1885 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
1886 | } | |
d02b48c6 | 1887 | #endif |
ea262260 BM |
1888 | |
1889 | #ifndef OPENSSL_NO_ECDH | |
1890 | else if ((l & SSL_kECDH) || (l & SSL_kECDHE)) | |
1891 | { | |
1892 | EC_GROUP *srvr_group = NULL; | |
1893 | int ecdh_clnt_cert = 0; | |
968766ca | 1894 | int field_size = 0; |
ea262260 BM |
1895 | |
1896 | /* Did we send out the client's | |
1897 | * ECDH share for use in premaster | |
1898 | * computation as part of client certificate? | |
1899 | * If so, set ecdh_clnt_cert to 1. | |
1900 | */ | |
1901 | if ((l & SSL_kECDH) && (s->cert != NULL)) | |
1902 | { | |
1903 | /* XXX: For now, we do not support client | |
1904 | * authentication using ECDH certificates. | |
1905 | * To add such support, one needs to add | |
1906 | * code that checks for appropriate | |
1907 | * conditions and sets ecdh_clnt_cert to 1. | |
1908 | * For example, the cert have an ECC | |
1909 | * key on the same curve as the server's | |
1910 | * and the key should be authorized for | |
1911 | * key agreement. | |
1912 | * | |
1913 | * One also needs to add code in ssl3_connect | |
1914 | * to skip sending the certificate verify | |
1915 | * message. | |
1916 | * | |
1917 | * if ((s->cert->key->privatekey != NULL) && | |
1918 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 1919 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
1920 | * ecdh_clnt_cert = 1; |
1921 | */ | |
1922 | } | |
1923 | ||
1924 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
1925 | { | |
1926 | srvr_group = s->session->sess_cert-> \ | |
1927 | peer_ecdh_tmp->group; | |
1928 | srvr_ecpoint = s->session->sess_cert-> \ | |
1929 | peer_ecdh_tmp->pub_key; | |
1930 | } | |
1931 | else | |
1932 | { | |
1933 | /* Get the Server Public Key from Cert */ | |
1934 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
1935 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
1936 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 1937 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
ea262260 BM |
1938 | (srvr_pub_pkey->pkey.eckey == NULL)) |
1939 | { | |
1940 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1941 | ERR_R_INTERNAL_ERROR); | |
1942 | goto err; | |
1943 | } | |
1944 | ||
1945 | srvr_group = srvr_pub_pkey->pkey.eckey->group; | |
1946 | srvr_ecpoint = | |
1947 | srvr_pub_pkey->pkey.eckey->pub_key; | |
1948 | } | |
1949 | ||
1950 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) | |
1951 | { | |
1952 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1953 | ERR_R_INTERNAL_ERROR); | |
1954 | goto err; | |
1955 | } | |
1956 | ||
1957 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
1958 | { | |
1959 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1960 | goto err; | |
1961 | } | |
1962 | ||
1963 | clnt_ecdh->group = srvr_group; | |
1964 | if (ecdh_clnt_cert) | |
1965 | { | |
57376542 | 1966 | /* Reuse key info from our certificate |
ea262260 BM |
1967 | * We only need our private key to perform |
1968 | * the ECDH computation. | |
1969 | */ | |
1970 | clnt_ecdh->priv_key = BN_dup(s->cert->key-> \ | |
1971 | privatekey->pkey.eckey->priv_key); | |
1972 | } | |
1973 | else | |
1974 | { | |
1975 | /* Generate a new ECDH key pair */ | |
1976 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
1977 | { | |
1978 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
1979 | goto err; | |
1980 | } | |
1981 | } | |
1982 | ||
57376542 BM |
1983 | /* use the 'p' output buffer for the ECDH key, but |
1984 | * make sure to clear it out afterwards | |
ea262260 BM |
1985 | */ |
1986 | ||
968766ca BM |
1987 | field_size = EC_GROUP_get_degree(clnt_ecdh->group); |
1988 | if (field_size <= 0) | |
1989 | { | |
1990 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1991 | ERR_R_ECDH_LIB); | |
1992 | goto err; | |
1993 | } | |
1994 | /* If field size is not more than 24 octets, then use SHA-1 hash of result; | |
1995 | * otherwise, use result (see section 4.8 of draft-ietf-tls-ecc-03.txt; | |
1996 | * this is new with this version of the Internet Draft). | |
1997 | */ | |
1998 | if (field_size <= 24 * 8) | |
1999 | n=ECDH_compute_key(p, KDF1_SHA1_len, srvr_ecpoint, clnt_ecdh, KDF1_SHA1); | |
2000 | else | |
2001 | n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL); | |
ea262260 | 2002 | if (n <= 0) |
57376542 BM |
2003 | { |
2004 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
ea262260 | 2005 | ERR_R_ECDH_LIB); |
57376542 | 2006 | goto err; |
ea262260 BM |
2007 | } |
2008 | ||
57376542 BM |
2009 | /* generate master key from the result */ |
2010 | s->session->master_key_length = s->method->ssl3_enc \ | |
ea262260 BM |
2011 | -> generate_master_secret(s, |
2012 | s->session->master_key, | |
2013 | p, n); | |
2014 | ||
57376542 | 2015 | memset(p, 0, n); /* clean up */ |
ea262260 BM |
2016 | |
2017 | if (ecdh_clnt_cert) | |
2018 | { | |
2019 | /* Send empty client key exch message */ | |
2020 | n = 0; | |
2021 | } | |
2022 | else | |
2023 | { | |
2024 | /* First check the size of encoding and | |
2025 | * allocate memory accordingly. | |
2026 | */ | |
2027 | encoded_pt_len = | |
2028 | EC_POINT_point2oct(clnt_ecdh->group, | |
2029 | clnt_ecdh->pub_key, | |
2030 | POINT_CONVERSION_UNCOMPRESSED, | |
2031 | NULL, 0, NULL); | |
2032 | ||
2033 | encodedPoint = (unsigned char *) | |
2034 | OPENSSL_malloc(encoded_pt_len * | |
2035 | sizeof(unsigned char)); | |
2036 | bn_ctx = BN_CTX_new(); | |
2037 | if ((encodedPoint == NULL) || | |
2038 | (bn_ctx == NULL)) | |
2039 | { | |
2040 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2041 | goto err; | |
2042 | } | |
2043 | ||
2044 | /* Encode the public key */ | |
2045 | n = EC_POINT_point2oct(clnt_ecdh->group, | |
2046 | clnt_ecdh->pub_key, | |
2047 | POINT_CONVERSION_UNCOMPRESSED, | |
2048 | encodedPoint, encoded_pt_len, bn_ctx); | |
2049 | ||
2050 | *p = n; /* length of encoded point */ | |
57376542 | 2051 | /* Encoded point will be copied here */ |
ea262260 BM |
2052 | p += 1; |
2053 | /* copy the point */ | |
2054 | memcpy((unsigned char *)p, encodedPoint, n); | |
2055 | /* increment n to account for length field */ | |
2056 | n += 1; | |
2057 | } | |
2058 | ||
2059 | /* Free allocated memory */ | |
2060 | BN_CTX_free(bn_ctx); | |
2061 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2062 | if (clnt_ecdh != NULL) | |
2063 | { | |
57376542 | 2064 | /* group is shared */ |
ea262260 BM |
2065 | clnt_ecdh->group = NULL; |
2066 | EC_KEY_free(clnt_ecdh); | |
2067 | } | |
2068 | EVP_PKEY_free(srvr_pub_pkey); | |
2069 | } | |
2070 | #endif /* !OPENSSL_NO_ECDH */ | |
f9b3bff6 | 2071 | else |
d02b48c6 | 2072 | { |
ea262260 BM |
2073 | ssl3_send_alert(s, SSL3_AL_FATAL, |
2074 | SSL_AD_HANDSHAKE_FAILURE); | |
2075 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2076 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
2077 | goto err; |
2078 | } | |
2079 | ||
2080 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
2081 | l2n3(n,d); | |
2082 | ||
2083 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
2084 | /* number of bytes to write */ | |
2085 | s->init_num=n+4; | |
2086 | s->init_off=0; | |
2087 | } | |
2088 | ||
2089 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
2090 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2091 | err: | |
ea262260 BM |
2092 | #ifndef OPENSSL_NO_ECDH |
2093 | BN_CTX_free(bn_ctx); | |
2094 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2095 | if (clnt_ecdh != NULL) | |
2096 | { | |
2097 | /* group is shared */ | |
2098 | clnt_ecdh->group = NULL; | |
2099 | EC_KEY_free(clnt_ecdh); | |
2100 | } | |
57376542 | 2101 | EVP_PKEY_free(srvr_pub_pkey); |
ea262260 | 2102 | #endif |
d02b48c6 RE |
2103 | return(-1); |
2104 | } | |
2105 | ||
36d16f8e | 2106 | int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
2107 | { |
2108 | unsigned char *p,*d; | |
2109 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
2110 | EVP_PKEY *pkey; | |
bc36ee62 | 2111 | #ifndef OPENSSL_NO_RSA |
ca7fea96 | 2112 | unsigned u=0; |
79df9d62 | 2113 | #endif |
d02b48c6 | 2114 | unsigned long n; |
bc36ee62 | 2115 | #ifndef OPENSSL_NO_DSA |
58964a49 RE |
2116 | int j; |
2117 | #endif | |
d02b48c6 RE |
2118 | |
2119 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) | |
2120 | { | |
2121 | d=(unsigned char *)s->init_buf->data; | |
2122 | p= &(d[4]); | |
2123 | pkey=s->cert->key->privatekey; | |
2124 | ||
58964a49 RE |
2125 | s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), |
2126 | &(data[MD5_DIGEST_LENGTH])); | |
d02b48c6 | 2127 | |
bc36ee62 | 2128 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2129 | if (pkey->type == EVP_PKEY_RSA) |
2130 | { | |
58964a49 RE |
2131 | s->method->ssl3_enc->cert_verify_mac(s, |
2132 | &(s->s3->finish_dgst1),&(data[0])); | |
1c80019a DSH |
2133 | if (RSA_sign(NID_md5_sha1, data, |
2134 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 2135 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
2136 | { |
2137 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
2138 | goto err; | |
2139 | } | |
ca7fea96 BL |
2140 | s2n(u,p); |
2141 | n=u+2; | |
d02b48c6 RE |
2142 | } |
2143 | else | |
2144 | #endif | |
bc36ee62 | 2145 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2146 | if (pkey->type == EVP_PKEY_DSA) |
2147 | { | |
2148 | if (!DSA_sign(pkey->save_type, | |
2149 | &(data[MD5_DIGEST_LENGTH]), | |
2150 | SHA_DIGEST_LENGTH,&(p[2]), | |
2151 | (unsigned int *)&j,pkey->pkey.dsa)) | |
2152 | { | |
2153 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
2154 | goto err; | |
2155 | } | |
2156 | s2n(j,p); | |
2157 | n=j+2; | |
2158 | } | |
2159 | else | |
ea262260 BM |
2160 | #endif |
2161 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 2162 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
2163 | { |
2164 | if (!ECDSA_sign(pkey->save_type, | |
2165 | &(data[MD5_DIGEST_LENGTH]), | |
2166 | SHA_DIGEST_LENGTH,&(p[2]), | |
2167 | (unsigned int *)&j,pkey->pkey.eckey)) | |
2168 | { | |
2169 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
2170 | ERR_R_ECDSA_LIB); | |
2171 | goto err; | |
2172 | } | |
2173 | s2n(j,p); | |
2174 | n=j+2; | |
2175 | } | |
2176 | else | |
d02b48c6 RE |
2177 | #endif |
2178 | { | |
5277d7cb | 2179 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2180 | goto err; |
2181 | } | |
2182 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; | |
2183 | l2n3(n,d); | |
2184 | ||
ba9f80c5 | 2185 | s->state=SSL3_ST_CW_CERT_VRFY_B; |
d02b48c6 RE |
2186 | s->init_num=(int)n+4; |
2187 | s->init_off=0; | |
2188 | } | |
2189 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2190 | err: | |
2191 | return(-1); | |
2192 | } | |
2193 | ||
36d16f8e | 2194 | int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
2195 | { |
2196 | X509 *x509=NULL; | |
2197 | EVP_PKEY *pkey=NULL; | |
2198 | int i; | |
2199 | unsigned long l; | |
2200 | ||
2201 | if (s->state == SSL3_ST_CW_CERT_A) | |
2202 | { | |
2203 | if ((s->cert == NULL) || | |
2204 | (s->cert->key->x509 == NULL) || | |
2205 | (s->cert->key->privatekey == NULL)) | |
2206 | s->state=SSL3_ST_CW_CERT_B; | |
2207 | else | |
2208 | s->state=SSL3_ST_CW_CERT_C; | |
2209 | } | |
2210 | ||
2211 | /* We need to get a client cert */ | |
2212 | if (s->state == SSL3_ST_CW_CERT_B) | |
2213 | { | |
2214 | /* If we get an error, we need to | |
2215 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
2216 | * We then get retied later */ | |
2217 | i=0; | |
2218 | if (s->ctx->client_cert_cb != NULL) | |
2219 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); | |
2220 | if (i < 0) | |
2221 | { | |
2222 | s->rwstate=SSL_X509_LOOKUP; | |
2223 | return(-1); | |
2224 | } | |
2225 | s->rwstate=SSL_NOTHING; | |
2226 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
2227 | { | |
2228 | s->state=SSL3_ST_CW_CERT_B; | |
2229 | if ( !SSL_use_certificate(s,x509) || | |
2230 | !SSL_use_PrivateKey(s,pkey)) | |
2231 | i=0; | |
2232 | } | |
2233 | else if (i == 1) | |
2234 | { | |
2235 | i=0; | |
2236 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
2237 | } | |
2238 | ||
2239 | if (x509 != NULL) X509_free(x509); | |
2240 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
2241 | if (i == 0) | |
2242 | { | |
58964a49 RE |
2243 | if (s->version == SSL3_VERSION) |
2244 | { | |
2245 | s->s3->tmp.cert_req=0; | |
2246 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
2247 | return(1); | |
2248 | } | |
2249 | else | |
2250 | { | |
2251 | s->s3->tmp.cert_req=2; | |
2252 | } | |
d02b48c6 RE |
2253 | } |
2254 | ||
2255 | /* Ok, we have a cert */ | |
2256 | s->state=SSL3_ST_CW_CERT_C; | |
2257 | } | |
2258 | ||
2259 | if (s->state == SSL3_ST_CW_CERT_C) | |
2260 | { | |
2261 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
2262 | l=ssl3_output_cert_chain(s, |
2263 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
d02b48c6 RE |
2264 | s->init_num=(int)l; |
2265 | s->init_off=0; | |
2266 | } | |
2267 | /* SSL3_ST_CW_CERT_D */ | |
2268 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2269 | } | |
2270 | ||
2271 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
2272 | ||
36d16f8e | 2273 | int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
2274 | { |
2275 | int i,idx; | |
2276 | long algs; | |
2277 | EVP_PKEY *pkey=NULL; | |
b56bce4f | 2278 | SESS_CERT *sc; |
bc36ee62 | 2279 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 2280 | RSA *rsa; |
79df9d62 | 2281 | #endif |
bc36ee62 | 2282 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2283 | DH *dh; |
79df9d62 | 2284 | #endif |
d02b48c6 | 2285 | |
b56bce4f | 2286 | sc=s->session->sess_cert; |
d02b48c6 | 2287 | |
b56bce4f | 2288 | if (sc == NULL) |
d02b48c6 | 2289 | { |
5277d7cb | 2290 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2291 | goto err; |
2292 | } | |
2293 | ||
2294 | algs=s->s3->tmp.new_cipher->algorithms; | |
2295 | ||
2296 | /* we don't have a certificate */ | |
f9b3bff6 | 2297 | if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) |
d02b48c6 RE |
2298 | return(1); |
2299 | ||
bc36ee62 | 2300 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 2301 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 2302 | #endif |
bc36ee62 | 2303 | #ifndef OPENSSL_NO_DH |
b56bce4f | 2304 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 2305 | #endif |
d02b48c6 RE |
2306 | |
2307 | /* This is the passed certificate */ | |
2308 | ||
b56bce4f | 2309 | idx=sc->peer_cert_type; |
ea262260 BM |
2310 | #ifndef OPENSSL_NO_ECDH |
2311 | if (idx == SSL_PKEY_ECC) | |
2312 | { | |
2313 | if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, | |
2314 | s->s3->tmp.new_cipher) == 0) | |
2315 | { /* check failed */ | |
2316 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
2317 | goto f_err; | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | return 1; | |
2322 | } | |
2323 | } | |
2324 | #endif | |
b56bce4f BM |
2325 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
2326 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 2327 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2328 | |
2329 | ||
2330 | /* Check that we have a certificate if we require one */ | |
2331 | if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) | |
2332 | { | |
2333 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
2334 | goto f_err; | |
2335 | } | |
bc36ee62 | 2336 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2337 | else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
2338 | { | |
2339 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
2340 | goto f_err; | |
2341 | } | |
2342 | #endif | |
bc36ee62 | 2343 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2344 | if ((algs & SSL_kRSA) && |
2345 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) | |
2346 | { | |
2347 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
2348 | goto f_err; | |
2349 | } | |
79df9d62 | 2350 | #endif |
bc36ee62 | 2351 | #ifndef OPENSSL_NO_DH |
79df9d62 | 2352 | if ((algs & SSL_kEDH) && |
d02b48c6 RE |
2353 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
2354 | { | |
2355 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
2356 | goto f_err; | |
2357 | } | |
2358 | else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) | |
2359 | { | |
2360 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
2361 | goto f_err; | |
2362 | } | |
bc36ee62 | 2363 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2364 | else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) |
2365 | { | |
2366 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
2367 | goto f_err; | |
2368 | } | |
2369 | #endif | |
2370 | #endif | |
2371 | ||
018e57c7 | 2372 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 2373 | { |
bc36ee62 | 2374 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2375 | if (algs & SSL_kRSA) |
2376 | { | |
06ab81f9 | 2377 | if (rsa == NULL |
70ef9c5a | 2378 | || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2379 | { |
2380 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
2381 | goto f_err; | |
2382 | } | |
2383 | } | |
2384 | else | |
2385 | #endif | |
bc36ee62 | 2386 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2387 | if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
2388 | { |
2389 | if (dh == NULL | |
70ef9c5a | 2390 | || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2391 | { |
2392 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
2393 | goto f_err; | |
2394 | } | |
2395 | } | |
2396 | else | |
2397 | #endif | |
2398 | { | |
2399 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
2400 | goto f_err; | |
2401 | } | |
2402 | } | |
2403 | return(1); | |
2404 | f_err: | |
58964a49 | 2405 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2406 | err: |
2407 | return(0); | |
2408 | } | |
2409 | ||
ea262260 BM |
2410 | |
2411 | #ifndef OPENSSL_NO_ECDH | |
2412 | /* This is the complement of nid2curve_id in s3_srvr.c. */ | |
2413 | static int curve_id2nid(int curve_id) | |
2414 | { | |
968766ca BM |
2415 | /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001) |
2416 | * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */ | |
ea262260 BM |
2417 | static int nid_list[26] = |
2418 | { | |
2419 | 0, | |
2420 | NID_sect163k1, /* sect163k1 (1) */ | |
2421 | NID_sect163r1, /* sect163r1 (2) */ | |
2422 | NID_sect163r2, /* sect163r2 (3) */ | |
2423 | NID_sect193r1, /* sect193r1 (4) */ | |
2424 | NID_sect193r2, /* sect193r2 (5) */ | |
2425 | NID_sect233k1, /* sect233k1 (6) */ | |
2426 | NID_sect233r1, /* sect233r1 (7) */ | |
2427 | NID_sect239k1, /* sect239k1 (8) */ | |
2428 | NID_sect283k1, /* sect283k1 (9) */ | |
2429 | NID_sect283r1, /* sect283r1 (10) */ | |
2430 | NID_sect409k1, /* sect409k1 (11) */ | |
2431 | NID_sect409r1, /* sect409r1 (12) */ | |
2432 | NID_sect571k1, /* sect571k1 (13) */ | |
2433 | NID_sect571r1, /* sect571r1 (14) */ | |
2434 | NID_secp160k1, /* secp160k1 (15) */ | |
2435 | NID_secp160r1, /* secp160r1 (16) */ | |
2436 | NID_secp160r2, /* secp160r2 (17) */ | |
2437 | NID_secp192k1, /* secp192k1 (18) */ | |
2438 | NID_X9_62_prime192v1, /* secp192r1 (19) */ | |
2439 | NID_secp224k1, /* secp224k1 (20) */ | |
2440 | NID_secp224r1, /* secp224r1 (21) */ | |
2441 | NID_secp256k1, /* secp256k1 (22) */ | |
2442 | NID_X9_62_prime256v1, /* secp256r1 (23) */ | |
2443 | NID_secp384r1, /* secp384r1 (24) */ | |
2444 | NID_secp521r1 /* secp521r1 (25) */ | |
2445 | }; | |
2446 | ||
2447 | if ((curve_id < 1) || (curve_id > 25)) return 0; | |
2448 | ||
2449 | return nid_list[curve_id]; | |
2450 | } | |
2451 | #endif |