]>
Commit | Line | Data |
---|---|---|
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 BM |
58 | /* ==================================================================== |
59 | * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. | |
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> |
c046fffa | 133 | #include "cryptlib.h" |
f9b3bff6 | 134 | |
9b3086fe | 135 | static SSL_METHOD *ssl3_get_client_method(int ver); |
d02b48c6 RE |
136 | static int ssl3_client_hello(SSL *s); |
137 | static int ssl3_get_server_hello(SSL *s); | |
138 | static int ssl3_get_certificate_request(SSL *s); | |
ccd86b68 | 139 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
d02b48c6 RE |
140 | static int ssl3_get_server_done(SSL *s); |
141 | static int ssl3_send_client_verify(SSL *s); | |
142 | static int ssl3_send_client_certificate(SSL *s); | |
143 | static int ssl3_send_client_key_exchange(SSL *s); | |
144 | static int ssl3_get_key_exchange(SSL *s); | |
145 | static int ssl3_get_server_certificate(SSL *s); | |
146 | static int ssl3_check_cert_and_algorithm(SSL *s); | |
ea262260 BM |
147 | |
148 | #ifndef OPENSSL_NO_ECDH | |
149 | static int curve_id2nid(int curve_id); | |
150 | int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs); | |
151 | #endif | |
152 | ||
6b691a5c | 153 | static SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 154 | { |
58964a49 | 155 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
156 | return(SSLv3_client_method()); |
157 | else | |
158 | return(NULL); | |
159 | } | |
160 | ||
6b691a5c | 161 | SSL_METHOD *SSLv3_client_method(void) |
d02b48c6 RE |
162 | { |
163 | static int init=1; | |
164 | static SSL_METHOD SSLv3_client_data; | |
165 | ||
166 | if (init) | |
167 | { | |
e78f1378 BM |
168 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_METHOD); |
169 | ||
b8565a9a BM |
170 | if (init) |
171 | { | |
172 | memcpy((char *)&SSLv3_client_data,(char *)sslv3_base_method(), | |
173 | sizeof(SSL_METHOD)); | |
174 | SSLv3_client_data.ssl_connect=ssl3_connect; | |
175 | SSLv3_client_data.get_ssl_method=ssl3_get_client_method; | |
176 | init=0; | |
177 | } | |
e78f1378 BM |
178 | |
179 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_METHOD); | |
d02b48c6 RE |
180 | } |
181 | return(&SSLv3_client_data); | |
182 | } | |
183 | ||
6b691a5c | 184 | int ssl3_connect(SSL *s) |
d02b48c6 RE |
185 | { |
186 | BUF_MEM *buf; | |
187 | unsigned long Time=time(NULL),l; | |
188 | long num1; | |
45d87a1f | 189 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 190 | int ret= -1; |
d02b48c6 RE |
191 | int new_state,state,skip=0;; |
192 | ||
eb952088 | 193 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 194 | ERR_clear_error(); |
58964a49 | 195 | clear_sys_error(); |
d02b48c6 RE |
196 | |
197 | if (s->info_callback != NULL) | |
198 | cb=s->info_callback; | |
199 | else if (s->ctx->info_callback != NULL) | |
200 | cb=s->ctx->info_callback; | |
201 | ||
d02b48c6 | 202 | s->in_handshake++; |
979689aa | 203 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 RE |
204 | |
205 | for (;;) | |
206 | { | |
207 | state=s->state; | |
208 | ||
209 | switch(s->state) | |
210 | { | |
211 | case SSL_ST_RENEGOTIATE: | |
212 | s->new_session=1; | |
213 | s->state=SSL_ST_CONNECT; | |
413c4f45 | 214 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
215 | /* break */ |
216 | case SSL_ST_BEFORE: | |
217 | case SSL_ST_CONNECT: | |
218 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
219 | case SSL_ST_OK|SSL_ST_CONNECT: | |
220 | ||
413c4f45 | 221 | s->server=0; |
d02b48c6 RE |
222 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
223 | ||
58964a49 | 224 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 225 | { |
5277d7cb | 226 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
227 | ret = -1; |
228 | goto end; | |
229 | } | |
230 | ||
58964a49 | 231 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
232 | s->type=SSL_ST_CONNECT; |
233 | ||
234 | if (s->init_buf == NULL) | |
235 | { | |
236 | if ((buf=BUF_MEM_new()) == NULL) | |
237 | { | |
238 | ret= -1; | |
239 | goto end; | |
240 | } | |
241 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
242 | { | |
243 | ret= -1; | |
244 | goto end; | |
245 | } | |
246 | s->init_buf=buf; | |
247 | } | |
248 | ||
249 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
250 | ||
251 | /* setup buffing BIO */ | |
58964a49 | 252 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
253 | |
254 | /* don't push the buffering BIO quite yet */ | |
255 | ||
256 | ssl3_init_finished_mac(s); | |
257 | ||
258 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 259 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
260 | s->init_num=0; |
261 | break; | |
262 | ||
263 | case SSL3_ST_CW_CLNT_HELLO_A: | |
264 | case SSL3_ST_CW_CLNT_HELLO_B: | |
265 | ||
266 | s->shutdown=0; | |
267 | ret=ssl3_client_hello(s); | |
268 | if (ret <= 0) goto end; | |
269 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
270 | s->init_num=0; | |
271 | ||
272 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
273 | if (s->bbio != s->wbio) |
274 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
275 | |
276 | break; | |
277 | ||
278 | case SSL3_ST_CR_SRVR_HELLO_A: | |
279 | case SSL3_ST_CR_SRVR_HELLO_B: | |
280 | ret=ssl3_get_server_hello(s); | |
281 | if (ret <= 0) goto end; | |
282 | if (s->hit) | |
283 | s->state=SSL3_ST_CR_FINISHED_A; | |
284 | else | |
285 | s->state=SSL3_ST_CR_CERT_A; | |
286 | s->init_num=0; | |
287 | break; | |
288 | ||
289 | case SSL3_ST_CR_CERT_A: | |
290 | case SSL3_ST_CR_CERT_B: | |
ea262260 | 291 | /* Check if it is anon DH/ECDH */ |
d02b48c6 RE |
292 | if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) |
293 | { | |
294 | ret=ssl3_get_server_certificate(s); | |
295 | if (ret <= 0) goto end; | |
296 | } | |
297 | else | |
298 | skip=1; | |
299 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
300 | s->init_num=0; | |
301 | break; | |
302 | ||
303 | case SSL3_ST_CR_KEY_EXCH_A: | |
304 | case SSL3_ST_CR_KEY_EXCH_B: | |
305 | ret=ssl3_get_key_exchange(s); | |
306 | if (ret <= 0) goto end; | |
307 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
308 | s->init_num=0; | |
309 | ||
310 | /* at this point we check that we have the | |
311 | * required stuff from the server */ | |
312 | if (!ssl3_check_cert_and_algorithm(s)) | |
313 | { | |
314 | ret= -1; | |
315 | goto end; | |
316 | } | |
317 | break; | |
318 | ||
319 | case SSL3_ST_CR_CERT_REQ_A: | |
320 | case SSL3_ST_CR_CERT_REQ_B: | |
321 | ret=ssl3_get_certificate_request(s); | |
322 | if (ret <= 0) goto end; | |
323 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
324 | s->init_num=0; | |
325 | break; | |
326 | ||
327 | case SSL3_ST_CR_SRVR_DONE_A: | |
328 | case SSL3_ST_CR_SRVR_DONE_B: | |
329 | ret=ssl3_get_server_done(s); | |
330 | if (ret <= 0) goto end; | |
331 | if (s->s3->tmp.cert_req) | |
332 | s->state=SSL3_ST_CW_CERT_A; | |
333 | else | |
334 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
335 | s->init_num=0; | |
336 | ||
337 | break; | |
338 | ||
339 | case SSL3_ST_CW_CERT_A: | |
340 | case SSL3_ST_CW_CERT_B: | |
341 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 342 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
343 | ret=ssl3_send_client_certificate(s); |
344 | if (ret <= 0) goto end; | |
345 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
346 | s->init_num=0; | |
347 | break; | |
348 | ||
349 | case SSL3_ST_CW_KEY_EXCH_A: | |
350 | case SSL3_ST_CW_KEY_EXCH_B: | |
351 | ret=ssl3_send_client_key_exchange(s); | |
352 | if (ret <= 0) goto end; | |
353 | l=s->s3->tmp.new_cipher->algorithms; | |
354 | /* EAY EAY EAY need to check for DH fix cert | |
355 | * sent back */ | |
58964a49 RE |
356 | /* For TLS, cert_req is set to 2, so a cert chain |
357 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
358 | /* XXX: For now, we do not support client |
359 | * authentication in ECDH cipher suites with | |
360 | * ECDH (rather than ECDSA) certificates. | |
361 | * We need to skip the certificate verify | |
362 | * message when client's ECDH public key is sent | |
363 | * inside the client certificate. | |
364 | */ | |
58964a49 | 365 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
366 | { |
367 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
368 | } | |
369 | else | |
370 | { | |
371 | s->state=SSL3_ST_CW_CHANGE_A; | |
372 | s->s3->change_cipher_spec=0; | |
373 | } | |
374 | ||
375 | s->init_num=0; | |
376 | break; | |
377 | ||
378 | case SSL3_ST_CW_CERT_VRFY_A: | |
379 | case SSL3_ST_CW_CERT_VRFY_B: | |
380 | ret=ssl3_send_client_verify(s); | |
381 | if (ret <= 0) goto end; | |
382 | s->state=SSL3_ST_CW_CHANGE_A; | |
383 | s->init_num=0; | |
384 | s->s3->change_cipher_spec=0; | |
385 | break; | |
386 | ||
387 | case SSL3_ST_CW_CHANGE_A: | |
388 | case SSL3_ST_CW_CHANGE_B: | |
389 | ret=ssl3_send_change_cipher_spec(s, | |
390 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
391 | if (ret <= 0) goto end; | |
392 | s->state=SSL3_ST_CW_FINISHED_A; | |
393 | s->init_num=0; | |
394 | ||
395 | s->session->cipher=s->s3->tmp.new_cipher; | |
413c4f45 MC |
396 | if (s->s3->tmp.new_compression == NULL) |
397 | s->session->compress_meth=0; | |
398 | else | |
399 | s->session->compress_meth= | |
400 | s->s3->tmp.new_compression->id; | |
58964a49 | 401 | if (!s->method->ssl3_enc->setup_key_block(s)) |
d02b48c6 RE |
402 | { |
403 | ret= -1; | |
404 | goto end; | |
405 | } | |
406 | ||
58964a49 | 407 | if (!s->method->ssl3_enc->change_cipher_state(s, |
d02b48c6 RE |
408 | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) |
409 | { | |
410 | ret= -1; | |
411 | goto end; | |
412 | } | |
413 | ||
414 | break; | |
415 | ||
416 | case SSL3_ST_CW_FINISHED_A: | |
417 | case SSL3_ST_CW_FINISHED_B: | |
418 | ret=ssl3_send_finished(s, | |
419 | SSL3_ST_CW_FINISHED_A,SSL3_ST_CW_FINISHED_B, | |
c44f7540 BM |
420 | s->method->ssl3_enc->client_finished_label, |
421 | s->method->ssl3_enc->client_finished_label_len); | |
d02b48c6 RE |
422 | if (ret <= 0) goto end; |
423 | s->state=SSL3_ST_CW_FLUSH; | |
424 | ||
425 | /* clear flags */ | |
426 | s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER; | |
427 | if (s->hit) | |
428 | { | |
429 | s->s3->tmp.next_state=SSL_ST_OK; | |
430 | if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) | |
431 | { | |
432 | s->state=SSL_ST_OK; | |
433 | s->s3->flags|=SSL3_FLAGS_POP_BUFFER; | |
434 | s->s3->delay_buf_pop_ret=0; | |
435 | } | |
436 | } | |
437 | else | |
438 | { | |
439 | s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A; | |
440 | } | |
441 | s->init_num=0; | |
442 | break; | |
443 | ||
444 | case SSL3_ST_CR_FINISHED_A: | |
445 | case SSL3_ST_CR_FINISHED_B: | |
446 | ||
447 | ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, | |
58964a49 | 448 | SSL3_ST_CR_FINISHED_B); |
d02b48c6 RE |
449 | if (ret <= 0) goto end; |
450 | ||
451 | if (s->hit) | |
452 | s->state=SSL3_ST_CW_CHANGE_A; | |
453 | else | |
454 | s->state=SSL_ST_OK; | |
455 | s->init_num=0; | |
456 | break; | |
457 | ||
458 | case SSL3_ST_CW_FLUSH: | |
459 | /* number of bytes to be flushed */ | |
460 | num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); | |
461 | if (num1 > 0) | |
462 | { | |
463 | s->rwstate=SSL_WRITING; | |
464 | num1=BIO_flush(s->wbio); | |
465 | if (num1 <= 0) { ret= -1; goto end; } | |
466 | s->rwstate=SSL_NOTHING; | |
467 | } | |
468 | ||
469 | s->state=s->s3->tmp.next_state; | |
470 | break; | |
471 | ||
472 | case SSL_ST_OK: | |
473 | /* clean a few things up */ | |
474 | ssl3_cleanup_key_block(s); | |
475 | ||
413c4f45 | 476 | if (s->init_buf != NULL) |
d02b48c6 | 477 | { |
413c4f45 MC |
478 | BUF_MEM_free(s->init_buf); |
479 | s->init_buf=NULL; | |
d02b48c6 | 480 | } |
413c4f45 MC |
481 | |
482 | /* If we are not 'joining' the last two packets, | |
483 | * remove the buffering now */ | |
484 | if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER)) | |
485 | ssl_free_wbio_buffer(s); | |
486 | /* else do it later in ssl3_write */ | |
d02b48c6 RE |
487 | |
488 | s->init_num=0; | |
489 | s->new_session=0; | |
490 | ||
491 | ssl_update_cache(s,SSL_SESS_CACHE_CLIENT); | |
413c4f45 | 492 | if (s->hit) s->ctx->stats.sess_hit++; |
d02b48c6 RE |
493 | |
494 | ret=1; | |
495 | /* s->server=0; */ | |
496 | s->handshake_func=ssl3_connect; | |
413c4f45 | 497 | s->ctx->stats.sess_connect_good++; |
d02b48c6 RE |
498 | |
499 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_DONE,1); | |
500 | ||
501 | goto end; | |
dfeab068 | 502 | /* break; */ |
d02b48c6 RE |
503 | |
504 | default: | |
505 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_UNKNOWN_STATE); | |
506 | ret= -1; | |
507 | goto end; | |
508 | /* break; */ | |
509 | } | |
510 | ||
511 | /* did we do anything */ | |
512 | if (!s->s3->tmp.reuse_message && !skip) | |
513 | { | |
58964a49 RE |
514 | if (s->debug) |
515 | { | |
516 | if ((ret=BIO_flush(s->wbio)) <= 0) | |
517 | goto end; | |
518 | } | |
d02b48c6 RE |
519 | |
520 | if ((cb != NULL) && (s->state != state)) | |
521 | { | |
522 | new_state=s->state; | |
523 | s->state=state; | |
524 | cb(s,SSL_CB_CONNECT_LOOP,1); | |
525 | s->state=new_state; | |
526 | } | |
527 | } | |
528 | skip=0; | |
529 | } | |
530 | end: | |
4d635a70 | 531 | s->in_handshake--; |
d02b48c6 RE |
532 | if (cb != NULL) |
533 | cb(s,SSL_CB_CONNECT_EXIT,ret); | |
d02b48c6 RE |
534 | return(ret); |
535 | } | |
536 | ||
537 | ||
6b691a5c | 538 | static int ssl3_client_hello(SSL *s) |
d02b48c6 RE |
539 | { |
540 | unsigned char *buf; | |
541 | unsigned char *p,*d; | |
413c4f45 | 542 | int i,j; |
d02b48c6 | 543 | unsigned long Time,l; |
413c4f45 | 544 | SSL_COMP *comp; |
d02b48c6 RE |
545 | |
546 | buf=(unsigned char *)s->init_buf->data; | |
547 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
548 | { | |
549 | if ((s->session == NULL) || | |
dfeab068 RE |
550 | (s->session->ssl_version != s->version) || |
551 | (s->session->not_resumable)) | |
d02b48c6 RE |
552 | { |
553 | if (!ssl_get_new_session(s,0)) | |
554 | goto err; | |
555 | } | |
556 | /* else use the pre-loaded session */ | |
557 | ||
558 | p=s->s3->client_random; | |
559 | Time=time(NULL); /* Time */ | |
560 | l2n(Time,p); | |
e7f97e2d | 561 | RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time)); |
d02b48c6 RE |
562 | |
563 | /* Do the message type and length last */ | |
564 | d=p= &(buf[4]); | |
565 | ||
58964a49 RE |
566 | *(p++)=s->version>>8; |
567 | *(p++)=s->version&0xff; | |
413c4f45 | 568 | s->client_version=s->version; |
d02b48c6 RE |
569 | |
570 | /* Random stuff */ | |
571 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
572 | p+=SSL3_RANDOM_SIZE; | |
573 | ||
574 | /* Session ID */ | |
575 | if (s->new_session) | |
576 | i=0; | |
577 | else | |
578 | i=s->session->session_id_length; | |
579 | *(p++)=i; | |
580 | if (i != 0) | |
581 | { | |
5574e0ed BM |
582 | if (i > sizeof s->session->session_id) |
583 | { | |
584 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
585 | goto err; | |
586 | } | |
d02b48c6 RE |
587 | memcpy(p,s->session->session_id,i); |
588 | p+=i; | |
589 | } | |
590 | ||
591 | /* Ciphers supported */ | |
592 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2])); | |
593 | if (i == 0) | |
594 | { | |
595 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
596 | goto err; | |
597 | } | |
598 | s2n(i,p); | |
599 | p+=i; | |
600 | ||
dfeab068 | 601 | /* COMPRESSION */ |
413c4f45 MC |
602 | if (s->ctx->comp_methods == NULL) |
603 | j=0; | |
604 | else | |
f73e07cf | 605 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
606 | *(p++)=1+j; |
607 | for (i=0; i<j; i++) | |
608 | { | |
f73e07cf | 609 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
610 | *(p++)=comp->id; |
611 | } | |
612 | *(p++)=0; /* Add the NULL method */ | |
d02b48c6 RE |
613 | |
614 | l=(p-d); | |
615 | d=buf; | |
616 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
617 | l2n3(l,d); | |
618 | ||
619 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
620 | /* number of bytes to write */ | |
621 | s->init_num=p-buf; | |
622 | s->init_off=0; | |
623 | } | |
624 | ||
625 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
626 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
627 | err: | |
628 | return(-1); | |
629 | } | |
630 | ||
6b691a5c | 631 | static int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 632 | { |
f73e07cf | 633 | STACK_OF(SSL_CIPHER) *sk; |
d02b48c6 RE |
634 | SSL_CIPHER *c; |
635 | unsigned char *p,*d; | |
636 | int i,al,ok; | |
637 | unsigned int j; | |
638 | long n; | |
413c4f45 | 639 | SSL_COMP *comp; |
d02b48c6 RE |
640 | |
641 | n=ssl3_get_message(s, | |
642 | SSL3_ST_CR_SRVR_HELLO_A, | |
643 | SSL3_ST_CR_SRVR_HELLO_B, | |
644 | SSL3_MT_SERVER_HELLO, | |
645 | 300, /* ?? */ | |
646 | &ok); | |
647 | ||
648 | if (!ok) return((int)n); | |
48948d53 | 649 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 650 | |
58964a49 | 651 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
652 | { |
653 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
654 | s->version=(s->version&0xff00)|p[1]; |
655 | al=SSL_AD_PROTOCOL_VERSION; | |
656 | goto f_err; | |
d02b48c6 RE |
657 | } |
658 | p+=2; | |
659 | ||
660 | /* load the server hello data */ | |
661 | /* load the server random */ | |
662 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
663 | p+=SSL3_RANDOM_SIZE; | |
664 | ||
665 | /* get the session-id */ | |
666 | j= *(p++); | |
667 | ||
a4f53a1c | 668 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 669 | { |
a4f53a1c BM |
670 | al=SSL_AD_ILLEGAL_PARAMETER; |
671 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
672 | goto f_err; | |
d02b48c6 | 673 | } |
54a656ef | 674 | |
b4cadc6e BL |
675 | if (j != 0 && j == s->session->session_id_length |
676 | && memcmp(p,s->session->session_id,j) == 0) | |
677 | { | |
678 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
679 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
680 | { | |
a4f53a1c | 681 | /* actually a client application bug */ |
b4cadc6e BL |
682 | al=SSL_AD_ILLEGAL_PARAMETER; |
683 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
684 | goto f_err; | |
685 | } | |
686 | s->hit=1; | |
687 | } | |
58964a49 | 688 | else /* a miss or crap from the other end */ |
d02b48c6 | 689 | { |
58964a49 RE |
690 | /* If we were trying for session-id reuse, make a new |
691 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 692 | s->hit=0; |
58964a49 RE |
693 | if (s->session->session_id_length > 0) |
694 | { | |
695 | if (!ssl_get_new_session(s,0)) | |
696 | { | |
697 | al=SSL_AD_INTERNAL_ERROR; | |
698 | goto f_err; | |
699 | } | |
700 | } | |
701 | s->session->session_id_length=j; | |
702 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
703 | } |
704 | p+=j; | |
705 | c=ssl_get_cipher_by_char(s,p); | |
706 | if (c == NULL) | |
707 | { | |
708 | /* unknown cipher */ | |
58964a49 | 709 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
710 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
711 | goto f_err; | |
712 | } | |
713 | p+=ssl_put_cipher_by_char(s,NULL,NULL); | |
714 | ||
715 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 716 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
717 | if (i < 0) |
718 | { | |
719 | /* we did not say we would use this cipher */ | |
58964a49 | 720 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
721 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
722 | goto f_err; | |
723 | } | |
724 | ||
725 | if (s->hit && (s->session->cipher != c)) | |
726 | { | |
58964a49 | 727 | if (!(s->options & |
d02b48c6 RE |
728 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
729 | { | |
58964a49 | 730 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
731 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
732 | goto f_err; | |
733 | } | |
734 | } | |
735 | s->s3->tmp.new_cipher=c; | |
736 | ||
737 | /* lets get the compression algorithm */ | |
dfeab068 | 738 | /* COMPRESSION */ |
d02b48c6 | 739 | j= *(p++); |
413c4f45 MC |
740 | if (j == 0) |
741 | comp=NULL; | |
742 | else | |
743 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
744 | ||
745 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 746 | { |
58964a49 | 747 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
748 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
749 | goto f_err; | |
750 | } | |
413c4f45 MC |
751 | else |
752 | { | |
753 | s->s3->tmp.new_compression=comp; | |
754 | } | |
d02b48c6 RE |
755 | |
756 | if (p != (d+n)) | |
757 | { | |
758 | /* wrong packet length */ | |
58964a49 | 759 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
760 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
761 | goto err; | |
762 | } | |
763 | ||
764 | return(1); | |
765 | f_err: | |
766 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
767 | err: | |
768 | return(-1); | |
769 | } | |
770 | ||
6b691a5c | 771 | static int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
772 | { |
773 | int al,i,ok,ret= -1; | |
774 | unsigned long n,nc,llen,l; | |
775 | X509 *x=NULL; | |
776 | unsigned char *p,*d,*q; | |
f73e07cf | 777 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 778 | SESS_CERT *sc; |
d02b48c6 | 779 | EVP_PKEY *pkey=NULL; |
f9b3bff6 | 780 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 RE |
781 | |
782 | n=ssl3_get_message(s, | |
783 | SSL3_ST_CR_CERT_A, | |
784 | SSL3_ST_CR_CERT_B, | |
785 | -1, | |
c0f5dd07 | 786 | s->max_cert_list, |
d02b48c6 RE |
787 | &ok); |
788 | ||
789 | if (!ok) return((int)n); | |
790 | ||
791 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) | |
792 | { | |
793 | s->s3->tmp.reuse_message=1; | |
794 | return(1); | |
795 | } | |
796 | ||
797 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
798 | { | |
58964a49 | 799 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
800 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
801 | goto f_err; | |
802 | } | |
48948d53 | 803 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 804 | |
f73e07cf | 805 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
806 | { |
807 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
808 | goto err; | |
809 | } | |
810 | ||
811 | n2l3(p,llen); | |
812 | if (llen+3 != n) | |
813 | { | |
58964a49 | 814 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
815 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
816 | goto f_err; | |
817 | } | |
818 | for (nc=0; nc<llen; ) | |
819 | { | |
820 | n2l3(p,l); | |
821 | if ((l+nc+3) > llen) | |
822 | { | |
58964a49 | 823 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
824 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
825 | goto f_err; | |
826 | } | |
827 | ||
828 | q=p; | |
829 | x=d2i_X509(NULL,&q,l); | |
830 | if (x == NULL) | |
831 | { | |
58964a49 | 832 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
833 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
834 | goto f_err; | |
835 | } | |
836 | if (q != (p+l)) | |
837 | { | |
58964a49 | 838 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
839 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
840 | goto f_err; | |
841 | } | |
f73e07cf | 842 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
843 | { |
844 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
845 | goto err; | |
846 | } | |
847 | x=NULL; | |
848 | nc+=l+3; | |
849 | p=q; | |
850 | } | |
851 | ||
852 | i=ssl_verify_cert_chain(s,sk); | |
82d5d46c RL |
853 | if ((s->verify_mode != SSL_VERIFY_NONE) && (!i) |
854 | #ifndef OPENSSL_NO_KRB5 | |
855 | && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK)) | |
856 | != (SSL_aKRB5|SSL_kKRB5) | |
857 | #endif /* OPENSSL_NO_KRB5 */ | |
858 | ) | |
d02b48c6 RE |
859 | { |
860 | al=ssl_verify_alarm_type(s->verify_result); | |
861 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
862 | goto f_err; | |
863 | } | |
1fab73ac | 864 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 865 | |
b56bce4f BM |
866 | sc=ssl_sess_cert_new(); |
867 | if (sc == NULL) goto err; | |
d02b48c6 | 868 | |
b56bce4f BM |
869 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
870 | s->session->sess_cert=sc; | |
d02b48c6 | 871 | |
b56bce4f | 872 | sc->cert_chain=sk; |
98e04f9e BM |
873 | /* Inconsistency alert: cert_chain does include the peer's |
874 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 875 | x=sk_X509_value(sk,0); |
d02b48c6 | 876 | sk=NULL; |
2a1ef754 | 877 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
878 | |
879 | pkey=X509_get_pubkey(x); | |
880 | ||
f9b3bff6 | 881 | /* VRS: allow null cert if auth == KRB5 */ |
2a1ef754 RL |
882 | need_cert = ((s->s3->tmp.new_cipher->algorithms |
883 | & (SSL_MKEY_MASK|SSL_AUTH_MASK)) | |
f9b3bff6 RL |
884 | == (SSL_aKRB5|SSL_kKRB5))? 0: 1; |
885 | ||
886 | #ifdef KSSL_DEBUG | |
887 | printf("pkey,x = %p, %p\n", pkey,x); | |
888 | printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); | |
889 | printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name, | |
890 | s->s3->tmp.new_cipher->algorithms, need_cert); | |
891 | #endif /* KSSL_DEBUG */ | |
892 | ||
2a1ef754 | 893 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
894 | { |
895 | x=NULL; | |
896 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
897 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
898 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
899 | goto f_err; |
900 | } | |
901 | ||
902 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 903 | if (need_cert && i < 0) |
d02b48c6 RE |
904 | { |
905 | x=NULL; | |
906 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
907 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
908 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
909 | goto f_err; |
910 | } | |
911 | ||
f9b3bff6 RL |
912 | if (need_cert) |
913 | { | |
914 | sc->peer_cert_type=i; | |
915 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
916 | /* Why would the following ever happen? | |
917 | * We just created sc a couple of lines ago. */ | |
918 | if (sc->peer_pkeys[i].x509 != NULL) | |
919 | X509_free(sc->peer_pkeys[i].x509); | |
920 | sc->peer_pkeys[i].x509=x; | |
921 | sc->peer_key= &(sc->peer_pkeys[i]); | |
922 | ||
923 | if (s->session->peer != NULL) | |
924 | X509_free(s->session->peer); | |
925 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
926 | s->session->peer=x; | |
927 | } | |
928 | else | |
929 | { | |
930 | sc->peer_cert_type=i; | |
931 | sc->peer_key= NULL; | |
932 | ||
933 | if (s->session->peer != NULL) | |
934 | X509_free(s->session->peer); | |
935 | s->session->peer=NULL; | |
936 | } | |
0dd2254d | 937 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
938 | |
939 | x=NULL; | |
940 | ret=1; | |
941 | ||
942 | if (0) | |
943 | { | |
944 | f_err: | |
945 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
946 | } | |
947 | err: | |
a8236c8c DSH |
948 | EVP_PKEY_free(pkey); |
949 | X509_free(x); | |
f73e07cf | 950 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
951 | return(ret); |
952 | } | |
953 | ||
6b691a5c | 954 | static int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 955 | { |
bc36ee62 | 956 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
957 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
958 | #endif | |
959 | EVP_MD_CTX md_ctx; | |
960 | unsigned char *param,*p; | |
961 | int al,i,j,param_len,ok; | |
962 | long n,alg; | |
963 | EVP_PKEY *pkey=NULL; | |
bc36ee62 | 964 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 965 | RSA *rsa=NULL; |
79df9d62 | 966 | #endif |
bc36ee62 | 967 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 968 | DH *dh=NULL; |
58964a49 | 969 | #endif |
ea262260 BM |
970 | #ifndef OPENSSL_NO_ECDH |
971 | EC_KEY *ecdh = NULL; | |
972 | BN_CTX *bn_ctx = NULL; | |
973 | EC_POINT *srvr_ecpoint = NULL; | |
974 | int curve_nid = 0; | |
975 | int encoded_pt_len = 0; | |
976 | #endif | |
d02b48c6 | 977 | |
37a7cd1a BM |
978 | /* use same message size as in ssl3_get_certificate_request() |
979 | * as ServerKeyExchange message may be skipped */ | |
d02b48c6 RE |
980 | n=ssl3_get_message(s, |
981 | SSL3_ST_CR_KEY_EXCH_A, | |
982 | SSL3_ST_CR_KEY_EXCH_B, | |
983 | -1, | |
c0f5dd07 | 984 | s->max_cert_list, |
d02b48c6 RE |
985 | &ok); |
986 | ||
987 | if (!ok) return((int)n); | |
988 | ||
989 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
990 | { | |
991 | s->s3->tmp.reuse_message=1; | |
992 | return(1); | |
993 | } | |
994 | ||
48948d53 | 995 | param=p=(unsigned char *)s->init_msg; |
d02b48c6 | 996 | |
9d5cceac | 997 | if (s->session->sess_cert != NULL) |
d02b48c6 | 998 | { |
bc36ee62 | 999 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1000 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1001 | { |
b56bce4f BM |
1002 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1003 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1004 | } |
1005 | #endif | |
bc36ee62 | 1006 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1007 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1008 | { |
b56bce4f BM |
1009 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1010 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1011 | } |
ea262260 BM |
1012 | #endif |
1013 | #ifndef OPENSSL_NO_ECDH | |
1014 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1015 | { | |
1016 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1017 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1018 | } | |
d02b48c6 RE |
1019 | #endif |
1020 | } | |
1021 | else | |
1022 | { | |
b56bce4f | 1023 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1024 | } |
1025 | ||
1026 | param_len=0; | |
1027 | alg=s->s3->tmp.new_cipher->algorithms; | |
dbad1690 | 1028 | EVP_MD_CTX_init(&md_ctx); |
d02b48c6 | 1029 | |
bc36ee62 | 1030 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1031 | if (alg & SSL_kRSA) |
1032 | { | |
1033 | if ((rsa=RSA_new()) == NULL) | |
1034 | { | |
1035 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1036 | goto err; | |
1037 | } | |
1038 | n2s(p,i); | |
1039 | param_len=i+2; | |
1040 | if (param_len > n) | |
1041 | { | |
58964a49 | 1042 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1043 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1044 | goto f_err; | |
1045 | } | |
1046 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
1047 | { | |
1048 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1049 | goto err; | |
1050 | } | |
1051 | p+=i; | |
1052 | ||
1053 | n2s(p,i); | |
1054 | param_len+=i+2; | |
1055 | if (param_len > n) | |
1056 | { | |
58964a49 | 1057 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1058 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1059 | goto f_err; | |
1060 | } | |
1061 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
1062 | { | |
1063 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1064 | goto err; | |
1065 | } | |
1066 | p+=i; | |
1067 | n-=param_len; | |
1068 | ||
d02b48c6 RE |
1069 | /* this should be because we are using an export cipher */ |
1070 | if (alg & SSL_aRSA) | |
b56bce4f | 1071 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1072 | else |
1073 | { | |
5277d7cb | 1074 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1075 | goto err; |
1076 | } | |
b56bce4f | 1077 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1078 | rsa=NULL; |
d02b48c6 | 1079 | } |
bc36ee62 | 1080 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1081 | if (0) |
1082 | ; | |
d02b48c6 | 1083 | #endif |
bc36ee62 | 1084 | #ifndef OPENSSL_NO_DH |
3f2599d9 | 1085 | else if (alg & SSL_kEDH) |
d02b48c6 RE |
1086 | { |
1087 | if ((dh=DH_new()) == NULL) | |
1088 | { | |
1089 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1090 | goto err; | |
1091 | } | |
1092 | n2s(p,i); | |
1093 | param_len=i+2; | |
1094 | if (param_len > n) | |
1095 | { | |
58964a49 | 1096 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1097 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1098 | goto f_err; | |
1099 | } | |
1100 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
1101 | { | |
1102 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1103 | goto err; | |
1104 | } | |
1105 | p+=i; | |
1106 | ||
1107 | n2s(p,i); | |
1108 | param_len+=i+2; | |
1109 | if (param_len > n) | |
1110 | { | |
58964a49 | 1111 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1112 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1113 | goto f_err; | |
1114 | } | |
1115 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
1116 | { | |
1117 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1118 | goto err; | |
1119 | } | |
1120 | p+=i; | |
1121 | ||
1122 | n2s(p,i); | |
1123 | param_len+=i+2; | |
1124 | if (param_len > n) | |
1125 | { | |
58964a49 | 1126 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1127 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1128 | goto f_err; | |
1129 | } | |
1130 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
1131 | { | |
1132 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1133 | goto err; | |
1134 | } | |
1135 | p+=i; | |
1136 | n-=param_len; | |
1137 | ||
bc36ee62 | 1138 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1139 | if (alg & SSL_aRSA) |
b56bce4f | 1140 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1141 | #else |
1142 | if (0) | |
1143 | ; | |
d02b48c6 | 1144 | #endif |
bc36ee62 | 1145 | #ifndef OPENSSL_NO_DSA |
3f2599d9 | 1146 | else if (alg & SSL_aDSS) |
b56bce4f | 1147 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1148 | #endif |
1149 | /* else anonymous DH, so no certificate or pkey. */ | |
1150 | ||
b56bce4f | 1151 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1152 | dh=NULL; |
d02b48c6 RE |
1153 | } |
1154 | else if ((alg & SSL_kDHr) || (alg & SSL_kDHd)) | |
1155 | { | |
58964a49 | 1156 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1157 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1158 | goto f_err; | |
1159 | } | |
bc36ee62 | 1160 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1161 | |
1162 | #ifndef OPENSSL_NO_ECDH | |
1163 | else if (alg & SSL_kECDHE) | |
1164 | { | |
1165 | if ((ecdh=EC_KEY_new()) == NULL) | |
1166 | { | |
1167 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1168 | goto err; | |
1169 | } | |
1170 | ||
1171 | /* Extract elliptic curve parameters and the | |
1172 | * server's ephemeral ECDH public key. | |
1173 | * Keep accumulating lengths of various components in | |
1174 | * param_len and make sure it never exceeds n. | |
1175 | */ | |
1176 | ||
1177 | /* XXX: For now we only support named (not generic) curves | |
1178 | * and the ECParameters in this case is just two bytes. | |
1179 | */ | |
1180 | param_len=2; | |
1181 | if ((param_len > n) || | |
1182 | (*p != NAMED_CURVE_TYPE) || | |
1183 | ((curve_nid = curve_id2nid(*(p + 1))) == 0)) | |
1184 | { | |
1185 | al=SSL_AD_INTERNAL_ERROR; | |
1186 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1187 | goto f_err; | |
1188 | } | |
1189 | ||
1190 | if (!(ecdh->group=EC_GROUP_new_by_nid(curve_nid))) | |
1191 | { | |
1192 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1193 | goto err; | |
1194 | } | |
1195 | ||
1196 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
1197 | (EC_GROUP_get_degree(ecdh->group) > 163)) | |
1198 | { | |
1199 | al=SSL_AD_EXPORT_RESTRICTION; | |
1200 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1201 | goto f_err; | |
1202 | } | |
1203 | ||
1204 | p+=2; | |
1205 | ||
1206 | /* Next, get the encoded ECPoint */ | |
1207 | if (((srvr_ecpoint = EC_POINT_new(ecdh->group)) == NULL) || | |
1208 | ((bn_ctx = BN_CTX_new()) == NULL)) | |
1209 | { | |
1210 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1211 | goto err; | |
1212 | } | |
1213 | ||
1214 | encoded_pt_len = *p; /* length of encoded point */ | |
1215 | p+=1; | |
1216 | param_len += (1 + encoded_pt_len); | |
1217 | if ((param_len > n) || | |
1218 | (EC_POINT_oct2point(ecdh->group, srvr_ecpoint, | |
1219 | p, encoded_pt_len, bn_ctx) == 0)) | |
1220 | { | |
1221 | al=SSL_AD_DECODE_ERROR; | |
1222 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); | |
1223 | goto f_err; | |
1224 | } | |
1225 | ||
1226 | n-=param_len; | |
1227 | p+=encoded_pt_len; | |
1228 | ||
1229 | /* The ECC/TLS specification does not mention | |
1230 | * the use of DSA to sign ECParameters in the server | |
1231 | * key exchange message. We do support RSA and ECDSA. | |
1232 | */ | |
1233 | if (0) ; | |
1234 | #ifndef OPENSSL_NO_RSA | |
1235 | else if (alg & SSL_aRSA) | |
1236 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); | |
1237 | #endif | |
1238 | #ifndef OPENSSL_NO_ECDSA | |
1239 | else if (alg & SSL_aECDSA) | |
1240 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
1241 | #endif | |
1242 | /* else anonymous ECDH, so no certificate or pkey. */ | |
1243 | ecdh->pub_key = srvr_ecpoint; | |
1244 | s->session->sess_cert->peer_ecdh_tmp=ecdh; | |
1245 | ecdh=NULL; | |
1246 | BN_CTX_free(bn_ctx); | |
1247 | srvr_ecpoint = NULL; | |
1248 | } | |
1249 | else if (alg & SSL_kECDH) | |
1250 | { | |
1251 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1252 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1253 | goto f_err; | |
1254 | } | |
1255 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 RE |
1256 | if (alg & SSL_aFZA) |
1257 | { | |
1258 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1259 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); | |
1260 | goto f_err; | |
1261 | } | |
1262 | ||
d02b48c6 RE |
1263 | |
1264 | /* p points to the next byte, there are 'n' bytes left */ | |
1265 | ||
d02b48c6 RE |
1266 | /* if it was signed, check the signature */ |
1267 | if (pkey != NULL) | |
1268 | { | |
1269 | n2s(p,i); | |
1270 | n-=2; | |
1271 | j=EVP_PKEY_size(pkey); | |
1272 | ||
1273 | if ((i != n) || (n > j) || (n <= 0)) | |
1274 | { | |
1275 | /* wrong packet length */ | |
58964a49 | 1276 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1277 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1278 | goto f_err; |
d02b48c6 RE |
1279 | } |
1280 | ||
bc36ee62 | 1281 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1282 | if (pkey->type == EVP_PKEY_RSA) |
1283 | { | |
1284 | int num; | |
1285 | ||
1286 | j=0; | |
1287 | q=md_buf; | |
1288 | for (num=2; num > 0; num--) | |
1289 | { | |
20d2186c DSH |
1290 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1291 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1292 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1293 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1294 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
20d2186c | 1295 | EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i); |
d02b48c6 RE |
1296 | q+=i; |
1297 | j+=i; | |
1298 | } | |
1c80019a DSH |
1299 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1300 | pkey->pkey.rsa); | |
1301 | if (i < 0) | |
d02b48c6 | 1302 | { |
58964a49 | 1303 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1304 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1305 | goto f_err; | |
1306 | } | |
1c80019a | 1307 | if (i == 0) |
d02b48c6 RE |
1308 | { |
1309 | /* bad signature */ | |
58964a49 | 1310 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1311 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1312 | goto f_err; | |
1313 | } | |
1314 | } | |
1315 | else | |
1316 | #endif | |
bc36ee62 | 1317 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
1318 | if (pkey->type == EVP_PKEY_DSA) |
1319 | { | |
1320 | /* lets do DSS */ | |
20d2186c | 1321 | EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL); |
d02b48c6 RE |
1322 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1323 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1324 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1325 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1326 | { | |
1327 | /* bad signature */ | |
58964a49 | 1328 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1329 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1330 | goto f_err; | |
1331 | } | |
1332 | } | |
1333 | else | |
ea262260 BM |
1334 | #endif |
1335 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 1336 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
1337 | { |
1338 | /* let's do ECDSA */ | |
1339 | EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL); | |
1340 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1341 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1342 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1343 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1344 | { | |
1345 | /* bad signature */ | |
1346 | al=SSL_AD_DECRYPT_ERROR; | |
1347 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1348 | goto f_err; | |
1349 | } | |
1350 | } | |
1351 | else | |
d02b48c6 RE |
1352 | #endif |
1353 | { | |
5277d7cb | 1354 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1355 | goto err; |
1356 | } | |
1357 | } | |
1358 | else | |
1359 | { | |
1360 | /* still data left over */ | |
1361 | if (!(alg & SSL_aNULL)) | |
1362 | { | |
5277d7cb | 1363 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1364 | goto err; |
1365 | } | |
1366 | if (n != 0) | |
1367 | { | |
58964a49 | 1368 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1369 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1370 | goto f_err; | |
1371 | } | |
1372 | } | |
a8236c8c | 1373 | EVP_PKEY_free(pkey); |
dbad1690 | 1374 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1375 | return(1); |
1376 | f_err: | |
1377 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1378 | err: | |
a8236c8c | 1379 | EVP_PKEY_free(pkey); |
bc36ee62 | 1380 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1381 | if (rsa != NULL) |
1382 | RSA_free(rsa); | |
1383 | #endif | |
bc36ee62 | 1384 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1385 | if (dh != NULL) |
1386 | DH_free(dh); | |
ea262260 BM |
1387 | #endif |
1388 | #ifndef OPENSSL_NO_ECDH | |
1389 | BN_CTX_free(bn_ctx); | |
1390 | EC_POINT_free(srvr_ecpoint); | |
1391 | if (ecdh != NULL) | |
1392 | EC_KEY_free(ecdh); | |
6b521df3 | 1393 | #endif |
dbad1690 | 1394 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1395 | return(-1); |
1396 | } | |
1397 | ||
6b691a5c | 1398 | static int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1399 | { |
1400 | int ok,ret=0; | |
58964a49 RE |
1401 | unsigned long n,nc,l; |
1402 | unsigned int llen,ctype_num,i; | |
d02b48c6 RE |
1403 | X509_NAME *xn=NULL; |
1404 | unsigned char *p,*d,*q; | |
f73e07cf | 1405 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 RE |
1406 | |
1407 | n=ssl3_get_message(s, | |
1408 | SSL3_ST_CR_CERT_REQ_A, | |
1409 | SSL3_ST_CR_CERT_REQ_B, | |
1410 | -1, | |
c0f5dd07 | 1411 | s->max_cert_list, |
d02b48c6 RE |
1412 | &ok); |
1413 | ||
1414 | if (!ok) return((int)n); | |
1415 | ||
1416 | s->s3->tmp.cert_req=0; | |
1417 | ||
1418 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1419 | { | |
1420 | s->s3->tmp.reuse_message=1; | |
1421 | return(1); | |
1422 | } | |
1423 | ||
1424 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1425 | { | |
58964a49 | 1426 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1427 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1428 | goto err; | |
1429 | } | |
1430 | ||
58964a49 RE |
1431 | /* TLS does not like anon-DH with client cert */ |
1432 | if (s->version > SSL3_VERSION) | |
1433 | { | |
1434 | l=s->s3->tmp.new_cipher->algorithms; | |
1435 | if (l & SSL_aNULL) | |
1436 | { | |
1437 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1438 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1439 | goto err; | |
1440 | } | |
1441 | } | |
1442 | ||
48948d53 | 1443 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 1444 | |
f73e07cf | 1445 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1446 | { |
1447 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1448 | goto err; | |
1449 | } | |
1450 | ||
1451 | /* get the certificate types */ | |
1452 | ctype_num= *(p++); | |
1453 | if (ctype_num > SSL3_CT_NUMBER) | |
1454 | ctype_num=SSL3_CT_NUMBER; | |
1455 | for (i=0; i<ctype_num; i++) | |
1456 | s->s3->tmp.ctype[i]= p[i]; | |
1457 | p+=ctype_num; | |
1458 | ||
1459 | /* get the CA RDNs */ | |
1460 | n2s(p,llen); | |
dfeab068 RE |
1461 | #if 0 |
1462 | { | |
1463 | FILE *out; | |
1464 | out=fopen("/tmp/vsign.der","w"); | |
1465 | fwrite(p,1,llen,out); | |
1466 | fclose(out); | |
1467 | } | |
1468 | #endif | |
1469 | ||
d02b48c6 RE |
1470 | if ((llen+ctype_num+2+1) != n) |
1471 | { | |
58964a49 | 1472 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1473 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1474 | goto err; | |
1475 | } | |
1476 | ||
1477 | for (nc=0; nc<llen; ) | |
1478 | { | |
1479 | n2s(p,l); | |
1480 | if ((l+nc+2) > llen) | |
1481 | { | |
58964a49 | 1482 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 1483 | goto cont; /* netscape bugs */ |
58964a49 | 1484 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1485 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
1486 | goto err; | |
1487 | } | |
1488 | ||
1489 | q=p; | |
1490 | ||
1491 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
1492 | { | |
657e60fa | 1493 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 1494 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
1495 | goto cont; |
1496 | else | |
1497 | { | |
58964a49 | 1498 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1499 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
1500 | goto err; | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | if (q != (p+l)) | |
1505 | { | |
58964a49 | 1506 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1507 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
1508 | goto err; | |
1509 | } | |
f73e07cf | 1510 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
1511 | { |
1512 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1513 | goto err; | |
1514 | } | |
1515 | ||
1516 | p+=l; | |
1517 | nc+=l+2; | |
1518 | } | |
1519 | ||
1520 | if (0) | |
1521 | { | |
1522 | cont: | |
1523 | ERR_clear_error(); | |
1524 | } | |
1525 | ||
657e60fa | 1526 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
1527 | s->s3->tmp.cert_req=1; |
1528 | s->s3->tmp.ctype_num=ctype_num; | |
1529 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 1530 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
1531 | s->s3->tmp.ca_names=ca_sk; |
1532 | ca_sk=NULL; | |
1533 | ||
1534 | ret=1; | |
1535 | err: | |
f73e07cf | 1536 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
1537 | return(ret); |
1538 | } | |
1539 | ||
ccd86b68 | 1540 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
1541 | { |
1542 | return(X509_NAME_cmp(*a,*b)); | |
1543 | } | |
1544 | ||
6b691a5c | 1545 | static int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
1546 | { |
1547 | int ok,ret=0; | |
1548 | long n; | |
1549 | ||
1550 | n=ssl3_get_message(s, | |
1551 | SSL3_ST_CR_SRVR_DONE_A, | |
1552 | SSL3_ST_CR_SRVR_DONE_B, | |
1553 | SSL3_MT_SERVER_DONE, | |
1554 | 30, /* should be very small, like 0 :-) */ | |
1555 | &ok); | |
1556 | ||
1557 | if (!ok) return((int)n); | |
1558 | if (n > 0) | |
1559 | { | |
1560 | /* should contain no data */ | |
58964a49 | 1561 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 1562 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 1563 | return -1; |
d02b48c6 RE |
1564 | } |
1565 | ret=1; | |
1566 | return(ret); | |
1567 | } | |
1568 | ||
6b691a5c | 1569 | static int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 1570 | { |
79df9d62 | 1571 | unsigned char *p,*d; |
d02b48c6 RE |
1572 | int n; |
1573 | unsigned long l; | |
bc36ee62 | 1574 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 1575 | unsigned char *q; |
d02b48c6 | 1576 | EVP_PKEY *pkey=NULL; |
79df9d62 | 1577 | #endif |
bc36ee62 | 1578 | #ifndef OPENSSL_NO_KRB5 |
f9b3bff6 | 1579 | KSSL_ERR kssl_err; |
bc36ee62 | 1580 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
1581 | #ifndef OPENSSL_NO_ECDH |
1582 | EC_KEY *clnt_ecdh = NULL; | |
1583 | EC_POINT *srvr_ecpoint = NULL; | |
1584 | EVP_PKEY *srvr_pub_pkey = NULL; | |
1585 | unsigned char *encodedPoint = NULL; | |
1586 | int encoded_pt_len = 0; | |
1587 | BN_CTX * bn_ctx = NULL; | |
1588 | #endif | |
d02b48c6 RE |
1589 | |
1590 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
1591 | { | |
1592 | d=(unsigned char *)s->init_buf->data; | |
1593 | p= &(d[4]); | |
1594 | ||
1595 | l=s->s3->tmp.new_cipher->algorithms; | |
1596 | ||
f9b3bff6 RL |
1597 | /* Fool emacs indentation */ |
1598 | if (0) {} | |
bc36ee62 | 1599 | #ifndef OPENSSL_NO_RSA |
f9b3bff6 | 1600 | else if (l & SSL_kRSA) |
d02b48c6 RE |
1601 | { |
1602 | RSA *rsa; | |
dfeab068 | 1603 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 1604 | |
b56bce4f BM |
1605 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
1606 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
1607 | else |
1608 | { | |
b56bce4f | 1609 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1610 | if ((pkey == NULL) || |
1611 | (pkey->type != EVP_PKEY_RSA) || | |
1612 | (pkey->pkey.rsa == NULL)) | |
1613 | { | |
5277d7cb | 1614 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1615 | goto err; |
1616 | } | |
1617 | rsa=pkey->pkey.rsa; | |
50596582 | 1618 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1619 | } |
1620 | ||
413c4f45 MC |
1621 | tmp_buf[0]=s->client_version>>8; |
1622 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 1623 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 1624 | goto err; |
d02b48c6 | 1625 | |
54a656ef | 1626 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 1627 | |
58964a49 RE |
1628 | q=p; |
1629 | /* Fix buf for TLS and beyond */ | |
1630 | if (s->version > SSL3_VERSION) | |
1631 | p+=2; | |
54a656ef | 1632 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 1633 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
1634 | #ifdef PKCS1_CHECK |
1635 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
1636 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
1637 | #endif | |
d02b48c6 RE |
1638 | if (n <= 0) |
1639 | { | |
1640 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
1641 | goto err; | |
1642 | } | |
1643 | ||
58964a49 RE |
1644 | /* Fix buf for TLS and beyond */ |
1645 | if (s->version > SSL3_VERSION) | |
1646 | { | |
1647 | s2n(n,q); | |
1648 | n+=2; | |
1649 | } | |
1650 | ||
d02b48c6 | 1651 | s->session->master_key_length= |
58964a49 | 1652 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 1653 | s->session->master_key, |
54a656ef BL |
1654 | tmp_buf,sizeof tmp_buf); |
1655 | memset(tmp_buf,0,sizeof tmp_buf); | |
d02b48c6 | 1656 | } |
f9b3bff6 | 1657 | #endif |
bc36ee62 | 1658 | #ifndef OPENSSL_NO_KRB5 |
f9b3bff6 RL |
1659 | else if (l & SSL_kKRB5) |
1660 | { | |
1661 | krb5_error_code krb5rc; | |
1662 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
2a1ef754 RL |
1663 | /* krb5_data krb5_ap_req; */ |
1664 | krb5_data *enc_ticket; | |
1665 | krb5_data authenticator, *authp = NULL; | |
1666 | EVP_CIPHER_CTX ciph_ctx; | |
1667 | EVP_CIPHER *enc = NULL; | |
1668 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
1669 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
1670 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
1671 | + EVP_MAX_IV_LENGTH]; | |
1672 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 1673 | |
de941e28 DSH |
1674 | EVP_CIPHER_CTX_init(&ciph_ctx); |
1675 | ||
f9b3bff6 RL |
1676 | #ifdef KSSL_DEBUG |
1677 | printf("ssl3_send_client_key_exchange(%lx & %lx)\n", | |
1678 | l, SSL_kKRB5); | |
1679 | #endif /* KSSL_DEBUG */ | |
1680 | ||
2a1ef754 RL |
1681 | authp = NULL; |
1682 | #ifdef KRB5SENDAUTH | |
1683 | if (KRB5SENDAUTH) authp = &authenticator; | |
1684 | #endif /* KRB5SENDAUTH */ | |
1685 | ||
1686 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, | |
1687 | &kssl_err); | |
1688 | enc = kssl_map_enc(kssl_ctx->enctype); | |
882e8912 RL |
1689 | if (enc == NULL) |
1690 | goto err; | |
f9b3bff6 RL |
1691 | #ifdef KSSL_DEBUG |
1692 | { | |
1693 | printf("kssl_cget_tkt rtn %d\n", krb5rc); | |
f9b3bff6 | 1694 | if (krb5rc && kssl_err.text) |
2a1ef754 | 1695 | printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
f9b3bff6 RL |
1696 | } |
1697 | #endif /* KSSL_DEBUG */ | |
1698 | ||
1699 | if (krb5rc) | |
1700 | { | |
2a1ef754 RL |
1701 | ssl3_send_alert(s,SSL3_AL_FATAL, |
1702 | SSL_AD_HANDSHAKE_FAILURE); | |
1703 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1704 | kssl_err.reason); | |
f9b3bff6 RL |
1705 | goto err; |
1706 | } | |
1707 | ||
2a1ef754 RL |
1708 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
1709 | ** in place of RFC 2712 KerberosWrapper, as in: | |
1710 | ** | |
1711 | ** Send ticket (copy to *p, set n = length) | |
1712 | ** n = krb5_ap_req.length; | |
1713 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
1714 | ** if (krb5_ap_req.data) | |
1715 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
f9b3bff6 | 1716 | ** |
2a1ef754 RL |
1717 | ** Now using real RFC 2712 KerberosWrapper |
1718 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
1719 | ** Note: 2712 "opaque" types are here replaced | |
1720 | ** with a 2-byte length followed by the value. | |
1721 | ** Example: | |
1722 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
1723 | ** Where "xx xx" = length bytes. Shown here with | |
1724 | ** optional authenticator omitted. | |
1725 | */ | |
1726 | ||
1727 | /* KerberosWrapper.Ticket */ | |
1728 | s2n(enc_ticket->length,p); | |
1729 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
1730 | p+= enc_ticket->length; | |
1731 | n = enc_ticket->length + 2; | |
1732 | ||
1733 | /* KerberosWrapper.Authenticator */ | |
1734 | if (authp && authp->length) | |
1735 | { | |
1736 | s2n(authp->length,p); | |
1737 | memcpy(p, authp->data, authp->length); | |
1738 | p+= authp->length; | |
1739 | n+= authp->length + 2; | |
1740 | ||
1741 | free(authp->data); | |
1742 | authp->data = NULL; | |
1743 | authp->length = 0; | |
1744 | } | |
1745 | else | |
1746 | { | |
1747 | s2n(0,p);/* null authenticator length */ | |
1748 | n+=2; | |
1749 | } | |
1750 | ||
54a656ef | 1751 | if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0) |
2a1ef754 RL |
1752 | goto err; |
1753 | ||
1754 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 1755 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
1756 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
1757 | ** kssl_ctx->length); | |
581f1c84 | 1758 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
1759 | */ |
1760 | ||
54a656ef | 1761 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
1762 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
1763 | kssl_ctx->key,iv); | |
2a1ef754 | 1764 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 1765 | sizeof tmp_buf); |
581f1c84 | 1766 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 1767 | outl += padl; |
5574e0ed BM |
1768 | if (outl > sizeof epms) |
1769 | { | |
1770 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
1771 | goto err; | |
1772 | } | |
2a1ef754 RL |
1773 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
1774 | ||
1775 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
1776 | s2n(outl,p); | |
1777 | memcpy(p, epms, outl); | |
1778 | p+=outl; | |
1779 | n+=outl + 2; | |
1780 | ||
f9b3bff6 RL |
1781 | s->session->master_key_length= |
1782 | s->method->ssl3_enc->generate_master_secret(s, | |
2a1ef754 | 1783 | s->session->master_key, |
54a656ef | 1784 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 1785 | |
54a656ef | 1786 | memset(tmp_buf, 0, sizeof tmp_buf); |
2a1ef754 | 1787 | memset(epms, 0, outl); |
f9b3bff6 | 1788 | } |
d02b48c6 | 1789 | #endif |
bc36ee62 | 1790 | #ifndef OPENSSL_NO_DH |
f9b3bff6 | 1791 | else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
1792 | { |
1793 | DH *dh_srvr,*dh_clnt; | |
1794 | ||
b56bce4f BM |
1795 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
1796 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
1797 | else |
1798 | { | |
1799 | /* we get them from the cert */ | |
58964a49 | 1800 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1801 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
1802 | goto err; | |
1803 | } | |
1804 | ||
1805 | /* generate a new random key */ | |
1806 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
1807 | { | |
1808 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1809 | goto err; | |
1810 | } | |
1811 | if (!DH_generate_key(dh_clnt)) | |
1812 | { | |
1813 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1814 | goto err; | |
1815 | } | |
1816 | ||
1817 | /* use the 'p' output buffer for the DH key, but | |
1818 | * make sure to clear it out afterwards */ | |
58964a49 | 1819 | |
d02b48c6 | 1820 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 1821 | |
d02b48c6 RE |
1822 | if (n <= 0) |
1823 | { | |
1824 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1825 | goto err; | |
1826 | } | |
1827 | ||
1828 | /* generate master key from the result */ | |
1829 | s->session->master_key_length= | |
58964a49 | 1830 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1831 | s->session->master_key,p,n); |
1832 | /* clean up */ | |
1833 | memset(p,0,n); | |
1834 | ||
1835 | /* send off the data */ | |
1836 | n=BN_num_bytes(dh_clnt->pub_key); | |
1837 | s2n(n,p); | |
1838 | BN_bn2bin(dh_clnt->pub_key,p); | |
1839 | n+=2; | |
1840 | ||
1841 | DH_free(dh_clnt); | |
1842 | ||
1843 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
1844 | } | |
d02b48c6 | 1845 | #endif |
ea262260 BM |
1846 | |
1847 | #ifndef OPENSSL_NO_ECDH | |
1848 | else if ((l & SSL_kECDH) || (l & SSL_kECDHE)) | |
1849 | { | |
1850 | EC_GROUP *srvr_group = NULL; | |
1851 | int ecdh_clnt_cert = 0; | |
1852 | ||
1853 | /* Did we send out the client's | |
1854 | * ECDH share for use in premaster | |
1855 | * computation as part of client certificate? | |
1856 | * If so, set ecdh_clnt_cert to 1. | |
1857 | */ | |
1858 | if ((l & SSL_kECDH) && (s->cert != NULL)) | |
1859 | { | |
1860 | /* XXX: For now, we do not support client | |
1861 | * authentication using ECDH certificates. | |
1862 | * To add such support, one needs to add | |
1863 | * code that checks for appropriate | |
1864 | * conditions and sets ecdh_clnt_cert to 1. | |
1865 | * For example, the cert have an ECC | |
1866 | * key on the same curve as the server's | |
1867 | * and the key should be authorized for | |
1868 | * key agreement. | |
1869 | * | |
1870 | * One also needs to add code in ssl3_connect | |
1871 | * to skip sending the certificate verify | |
1872 | * message. | |
1873 | * | |
1874 | * if ((s->cert->key->privatekey != NULL) && | |
1875 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 1876 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
1877 | * ecdh_clnt_cert = 1; |
1878 | */ | |
1879 | } | |
1880 | ||
1881 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
1882 | { | |
1883 | srvr_group = s->session->sess_cert-> \ | |
1884 | peer_ecdh_tmp->group; | |
1885 | srvr_ecpoint = s->session->sess_cert-> \ | |
1886 | peer_ecdh_tmp->pub_key; | |
1887 | } | |
1888 | else | |
1889 | { | |
1890 | /* Get the Server Public Key from Cert */ | |
1891 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
1892 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
1893 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 1894 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
ea262260 BM |
1895 | (srvr_pub_pkey->pkey.eckey == NULL)) |
1896 | { | |
1897 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1898 | ERR_R_INTERNAL_ERROR); | |
1899 | goto err; | |
1900 | } | |
1901 | ||
1902 | srvr_group = srvr_pub_pkey->pkey.eckey->group; | |
1903 | srvr_ecpoint = | |
1904 | srvr_pub_pkey->pkey.eckey->pub_key; | |
1905 | } | |
1906 | ||
1907 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) | |
1908 | { | |
1909 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1910 | ERR_R_INTERNAL_ERROR); | |
1911 | goto err; | |
1912 | } | |
1913 | ||
1914 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
1915 | { | |
1916 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1917 | goto err; | |
1918 | } | |
1919 | ||
1920 | clnt_ecdh->group = srvr_group; | |
1921 | if (ecdh_clnt_cert) | |
1922 | { | |
1923 | /* Reuse key info from our certificate | |
1924 | * We only need our private key to perform | |
1925 | * the ECDH computation. | |
1926 | */ | |
1927 | clnt_ecdh->priv_key = BN_dup(s->cert->key-> \ | |
1928 | privatekey->pkey.eckey->priv_key); | |
1929 | } | |
1930 | else | |
1931 | { | |
1932 | /* Generate a new ECDH key pair */ | |
1933 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
1934 | { | |
1935 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
1936 | goto err; | |
1937 | } | |
1938 | } | |
1939 | ||
1940 | /* use the 'p' output buffer for the ECDH key, but | |
1941 | * make sure to clear it out afterwards | |
1942 | */ | |
1943 | ||
1944 | n=ECDH_compute_key(p, srvr_ecpoint, clnt_ecdh); | |
1945 | if (n <= 0) | |
1946 | { | |
1947 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1948 | ERR_R_ECDH_LIB); | |
1949 | goto err; | |
1950 | } | |
1951 | ||
1952 | /* generate master key from the result */ | |
1953 | s->session->master_key_length = s->method->ssl3_enc \ | |
1954 | -> generate_master_secret(s, | |
1955 | s->session->master_key, | |
1956 | p, n); | |
1957 | ||
1958 | memset(p, 0, n); /* clean up */ | |
1959 | ||
1960 | if (ecdh_clnt_cert) | |
1961 | { | |
1962 | /* Send empty client key exch message */ | |
1963 | n = 0; | |
1964 | } | |
1965 | else | |
1966 | { | |
1967 | /* First check the size of encoding and | |
1968 | * allocate memory accordingly. | |
1969 | */ | |
1970 | encoded_pt_len = | |
1971 | EC_POINT_point2oct(clnt_ecdh->group, | |
1972 | clnt_ecdh->pub_key, | |
1973 | POINT_CONVERSION_UNCOMPRESSED, | |
1974 | NULL, 0, NULL); | |
1975 | ||
1976 | encodedPoint = (unsigned char *) | |
1977 | OPENSSL_malloc(encoded_pt_len * | |
1978 | sizeof(unsigned char)); | |
1979 | bn_ctx = BN_CTX_new(); | |
1980 | if ((encodedPoint == NULL) || | |
1981 | (bn_ctx == NULL)) | |
1982 | { | |
1983 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1984 | goto err; | |
1985 | } | |
1986 | ||
1987 | /* Encode the public key */ | |
1988 | n = EC_POINT_point2oct(clnt_ecdh->group, | |
1989 | clnt_ecdh->pub_key, | |
1990 | POINT_CONVERSION_UNCOMPRESSED, | |
1991 | encodedPoint, encoded_pt_len, bn_ctx); | |
1992 | ||
1993 | *p = n; /* length of encoded point */ | |
1994 | /* Encoded point will be copied here */ | |
1995 | p += 1; | |
1996 | /* copy the point */ | |
1997 | memcpy((unsigned char *)p, encodedPoint, n); | |
1998 | /* increment n to account for length field */ | |
1999 | n += 1; | |
2000 | } | |
2001 | ||
2002 | /* Free allocated memory */ | |
2003 | BN_CTX_free(bn_ctx); | |
2004 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2005 | if (clnt_ecdh != NULL) | |
2006 | { | |
2007 | /* group is shared */ | |
2008 | clnt_ecdh->group = NULL; | |
2009 | EC_KEY_free(clnt_ecdh); | |
2010 | } | |
2011 | EVP_PKEY_free(srvr_pub_pkey); | |
2012 | } | |
2013 | #endif /* !OPENSSL_NO_ECDH */ | |
f9b3bff6 | 2014 | else |
d02b48c6 | 2015 | { |
ea262260 BM |
2016 | ssl3_send_alert(s, SSL3_AL_FATAL, |
2017 | SSL_AD_HANDSHAKE_FAILURE); | |
2018 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2019 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
2020 | goto err; |
2021 | } | |
2022 | ||
2023 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
2024 | l2n3(n,d); | |
2025 | ||
2026 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
2027 | /* number of bytes to write */ | |
2028 | s->init_num=n+4; | |
2029 | s->init_off=0; | |
2030 | } | |
2031 | ||
2032 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
2033 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2034 | err: | |
ea262260 BM |
2035 | #ifndef OPENSSL_NO_ECDH |
2036 | BN_CTX_free(bn_ctx); | |
2037 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2038 | if (clnt_ecdh != NULL) | |
2039 | { | |
2040 | /* group is shared */ | |
2041 | clnt_ecdh->group = NULL; | |
2042 | EC_KEY_free(clnt_ecdh); | |
2043 | } | |
2044 | EVP_PKEY_free(srvr_pub_pkey); | |
2045 | #endif | |
d02b48c6 RE |
2046 | return(-1); |
2047 | } | |
2048 | ||
6b691a5c | 2049 | static int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
2050 | { |
2051 | unsigned char *p,*d; | |
2052 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
2053 | EVP_PKEY *pkey; | |
bc36ee62 | 2054 | #ifndef OPENSSL_NO_RSA |
ca7fea96 | 2055 | unsigned u=0; |
79df9d62 | 2056 | #endif |
d02b48c6 | 2057 | unsigned long n; |
bc36ee62 | 2058 | #ifndef OPENSSL_NO_DSA |
58964a49 RE |
2059 | int j; |
2060 | #endif | |
d02b48c6 RE |
2061 | |
2062 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) | |
2063 | { | |
2064 | d=(unsigned char *)s->init_buf->data; | |
2065 | p= &(d[4]); | |
2066 | pkey=s->cert->key->privatekey; | |
2067 | ||
58964a49 RE |
2068 | s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), |
2069 | &(data[MD5_DIGEST_LENGTH])); | |
d02b48c6 | 2070 | |
bc36ee62 | 2071 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2072 | if (pkey->type == EVP_PKEY_RSA) |
2073 | { | |
58964a49 RE |
2074 | s->method->ssl3_enc->cert_verify_mac(s, |
2075 | &(s->s3->finish_dgst1),&(data[0])); | |
1c80019a DSH |
2076 | if (RSA_sign(NID_md5_sha1, data, |
2077 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 2078 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
2079 | { |
2080 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
2081 | goto err; | |
2082 | } | |
ca7fea96 BL |
2083 | s2n(u,p); |
2084 | n=u+2; | |
d02b48c6 RE |
2085 | } |
2086 | else | |
2087 | #endif | |
bc36ee62 | 2088 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2089 | if (pkey->type == EVP_PKEY_DSA) |
2090 | { | |
2091 | if (!DSA_sign(pkey->save_type, | |
2092 | &(data[MD5_DIGEST_LENGTH]), | |
2093 | SHA_DIGEST_LENGTH,&(p[2]), | |
2094 | (unsigned int *)&j,pkey->pkey.dsa)) | |
2095 | { | |
2096 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
2097 | goto err; | |
2098 | } | |
2099 | s2n(j,p); | |
2100 | n=j+2; | |
2101 | } | |
2102 | else | |
ea262260 BM |
2103 | #endif |
2104 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 2105 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
2106 | { |
2107 | if (!ECDSA_sign(pkey->save_type, | |
2108 | &(data[MD5_DIGEST_LENGTH]), | |
2109 | SHA_DIGEST_LENGTH,&(p[2]), | |
2110 | (unsigned int *)&j,pkey->pkey.eckey)) | |
2111 | { | |
2112 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
2113 | ERR_R_ECDSA_LIB); | |
2114 | goto err; | |
2115 | } | |
2116 | s2n(j,p); | |
2117 | n=j+2; | |
2118 | } | |
2119 | else | |
d02b48c6 RE |
2120 | #endif |
2121 | { | |
5277d7cb | 2122 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2123 | goto err; |
2124 | } | |
2125 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; | |
2126 | l2n3(n,d); | |
2127 | ||
2128 | s->init_num=(int)n+4; | |
2129 | s->init_off=0; | |
2130 | } | |
2131 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2132 | err: | |
2133 | return(-1); | |
2134 | } | |
2135 | ||
6b691a5c | 2136 | static int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
2137 | { |
2138 | X509 *x509=NULL; | |
2139 | EVP_PKEY *pkey=NULL; | |
2140 | int i; | |
2141 | unsigned long l; | |
2142 | ||
2143 | if (s->state == SSL3_ST_CW_CERT_A) | |
2144 | { | |
2145 | if ((s->cert == NULL) || | |
2146 | (s->cert->key->x509 == NULL) || | |
2147 | (s->cert->key->privatekey == NULL)) | |
2148 | s->state=SSL3_ST_CW_CERT_B; | |
2149 | else | |
2150 | s->state=SSL3_ST_CW_CERT_C; | |
2151 | } | |
2152 | ||
2153 | /* We need to get a client cert */ | |
2154 | if (s->state == SSL3_ST_CW_CERT_B) | |
2155 | { | |
2156 | /* If we get an error, we need to | |
2157 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
2158 | * We then get retied later */ | |
2159 | i=0; | |
2160 | if (s->ctx->client_cert_cb != NULL) | |
2161 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); | |
2162 | if (i < 0) | |
2163 | { | |
2164 | s->rwstate=SSL_X509_LOOKUP; | |
2165 | return(-1); | |
2166 | } | |
2167 | s->rwstate=SSL_NOTHING; | |
2168 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
2169 | { | |
2170 | s->state=SSL3_ST_CW_CERT_B; | |
2171 | if ( !SSL_use_certificate(s,x509) || | |
2172 | !SSL_use_PrivateKey(s,pkey)) | |
2173 | i=0; | |
2174 | } | |
2175 | else if (i == 1) | |
2176 | { | |
2177 | i=0; | |
2178 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
2179 | } | |
2180 | ||
2181 | if (x509 != NULL) X509_free(x509); | |
2182 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
2183 | if (i == 0) | |
2184 | { | |
58964a49 RE |
2185 | if (s->version == SSL3_VERSION) |
2186 | { | |
2187 | s->s3->tmp.cert_req=0; | |
2188 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
2189 | return(1); | |
2190 | } | |
2191 | else | |
2192 | { | |
2193 | s->s3->tmp.cert_req=2; | |
2194 | } | |
d02b48c6 RE |
2195 | } |
2196 | ||
2197 | /* Ok, we have a cert */ | |
2198 | s->state=SSL3_ST_CW_CERT_C; | |
2199 | } | |
2200 | ||
2201 | if (s->state == SSL3_ST_CW_CERT_C) | |
2202 | { | |
2203 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
2204 | l=ssl3_output_cert_chain(s, |
2205 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
d02b48c6 RE |
2206 | s->init_num=(int)l; |
2207 | s->init_off=0; | |
2208 | } | |
2209 | /* SSL3_ST_CW_CERT_D */ | |
2210 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2211 | } | |
2212 | ||
2213 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
2214 | ||
6b691a5c | 2215 | static int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
2216 | { |
2217 | int i,idx; | |
2218 | long algs; | |
2219 | EVP_PKEY *pkey=NULL; | |
b56bce4f | 2220 | SESS_CERT *sc; |
bc36ee62 | 2221 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 2222 | RSA *rsa; |
79df9d62 | 2223 | #endif |
bc36ee62 | 2224 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2225 | DH *dh; |
79df9d62 | 2226 | #endif |
d02b48c6 | 2227 | |
b56bce4f | 2228 | sc=s->session->sess_cert; |
d02b48c6 | 2229 | |
b56bce4f | 2230 | if (sc == NULL) |
d02b48c6 | 2231 | { |
5277d7cb | 2232 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2233 | goto err; |
2234 | } | |
2235 | ||
2236 | algs=s->s3->tmp.new_cipher->algorithms; | |
2237 | ||
2238 | /* we don't have a certificate */ | |
f9b3bff6 | 2239 | if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) |
d02b48c6 RE |
2240 | return(1); |
2241 | ||
bc36ee62 | 2242 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 2243 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 2244 | #endif |
bc36ee62 | 2245 | #ifndef OPENSSL_NO_DH |
b56bce4f | 2246 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 2247 | #endif |
d02b48c6 RE |
2248 | |
2249 | /* This is the passed certificate */ | |
2250 | ||
b56bce4f | 2251 | idx=sc->peer_cert_type; |
ea262260 BM |
2252 | #ifndef OPENSSL_NO_ECDH |
2253 | if (idx == SSL_PKEY_ECC) | |
2254 | { | |
2255 | if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, | |
2256 | s->s3->tmp.new_cipher) == 0) | |
2257 | { /* check failed */ | |
2258 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
2259 | goto f_err; | |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | return 1; | |
2264 | } | |
2265 | } | |
2266 | #endif | |
b56bce4f BM |
2267 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
2268 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 2269 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2270 | |
2271 | ||
2272 | /* Check that we have a certificate if we require one */ | |
2273 | if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) | |
2274 | { | |
2275 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
2276 | goto f_err; | |
2277 | } | |
bc36ee62 | 2278 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2279 | else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
2280 | { | |
2281 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
2282 | goto f_err; | |
2283 | } | |
2284 | #endif | |
bc36ee62 | 2285 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2286 | if ((algs & SSL_kRSA) && |
2287 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) | |
2288 | { | |
2289 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
2290 | goto f_err; | |
2291 | } | |
79df9d62 | 2292 | #endif |
bc36ee62 | 2293 | #ifndef OPENSSL_NO_DH |
79df9d62 | 2294 | if ((algs & SSL_kEDH) && |
d02b48c6 RE |
2295 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
2296 | { | |
2297 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
2298 | goto f_err; | |
2299 | } | |
2300 | else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) | |
2301 | { | |
2302 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
2303 | goto f_err; | |
2304 | } | |
bc36ee62 | 2305 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2306 | else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) |
2307 | { | |
2308 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
2309 | goto f_err; | |
2310 | } | |
2311 | #endif | |
2312 | #endif | |
2313 | ||
018e57c7 | 2314 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 2315 | { |
bc36ee62 | 2316 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2317 | if (algs & SSL_kRSA) |
2318 | { | |
06ab81f9 | 2319 | if (rsa == NULL |
018e57c7 | 2320 | || RSA_size(rsa) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2321 | { |
2322 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
2323 | goto f_err; | |
2324 | } | |
2325 | } | |
2326 | else | |
2327 | #endif | |
bc36ee62 | 2328 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2329 | if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
2330 | { |
2331 | if (dh == NULL | |
018e57c7 | 2332 | || DH_size(dh) > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2333 | { |
2334 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
2335 | goto f_err; | |
2336 | } | |
2337 | } | |
2338 | else | |
2339 | #endif | |
2340 | { | |
2341 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
2342 | goto f_err; | |
2343 | } | |
2344 | } | |
2345 | return(1); | |
2346 | f_err: | |
58964a49 | 2347 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2348 | err: |
2349 | return(0); | |
2350 | } | |
2351 | ||
ea262260 BM |
2352 | |
2353 | #ifndef OPENSSL_NO_ECDH | |
2354 | /* This is the complement of nid2curve_id in s3_srvr.c. */ | |
2355 | static int curve_id2nid(int curve_id) | |
2356 | { | |
2357 | /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001) */ | |
2358 | static int nid_list[26] = | |
2359 | { | |
2360 | 0, | |
2361 | NID_sect163k1, /* sect163k1 (1) */ | |
2362 | NID_sect163r1, /* sect163r1 (2) */ | |
2363 | NID_sect163r2, /* sect163r2 (3) */ | |
2364 | NID_sect193r1, /* sect193r1 (4) */ | |
2365 | NID_sect193r2, /* sect193r2 (5) */ | |
2366 | NID_sect233k1, /* sect233k1 (6) */ | |
2367 | NID_sect233r1, /* sect233r1 (7) */ | |
2368 | NID_sect239k1, /* sect239k1 (8) */ | |
2369 | NID_sect283k1, /* sect283k1 (9) */ | |
2370 | NID_sect283r1, /* sect283r1 (10) */ | |
2371 | NID_sect409k1, /* sect409k1 (11) */ | |
2372 | NID_sect409r1, /* sect409r1 (12) */ | |
2373 | NID_sect571k1, /* sect571k1 (13) */ | |
2374 | NID_sect571r1, /* sect571r1 (14) */ | |
2375 | NID_secp160k1, /* secp160k1 (15) */ | |
2376 | NID_secp160r1, /* secp160r1 (16) */ | |
2377 | NID_secp160r2, /* secp160r2 (17) */ | |
2378 | NID_secp192k1, /* secp192k1 (18) */ | |
2379 | NID_X9_62_prime192v1, /* secp192r1 (19) */ | |
2380 | NID_secp224k1, /* secp224k1 (20) */ | |
2381 | NID_secp224r1, /* secp224r1 (21) */ | |
2382 | NID_secp256k1, /* secp256k1 (22) */ | |
2383 | NID_X9_62_prime256v1, /* secp256r1 (23) */ | |
2384 | NID_secp384r1, /* secp384r1 (24) */ | |
2385 | NID_secp521r1 /* secp521r1 (25) */ | |
2386 | }; | |
2387 | ||
2388 | if ((curve_id < 1) || (curve_id > 25)) return 0; | |
2389 | ||
2390 | return nid_list[curve_id]; | |
2391 | } | |
2392 | #endif |