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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 | /* ==================================================================== |
f1fd4544 | 59 | * Copyright (c) 1998-2006 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> |
3eeaab4b | 133 | #ifndef OPENSSL_NO_DH |
60a938c6 | 134 | #include <openssl/dh.h> |
3eeaab4b | 135 | #endif |
d095b68d | 136 | #include <openssl/bn.h> |
f9b3bff6 | 137 | |
4ebb342f | 138 | static const SSL_METHOD *ssl3_get_client_method(int ver); |
ccd86b68 | 139 | static int ca_dn_cmp(const X509_NAME * const *a,const X509_NAME * const *b); |
ea262260 BM |
140 | |
141 | #ifndef OPENSSL_NO_ECDH | |
142 | static int curve_id2nid(int curve_id); | |
143 | int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs); | |
144 | #endif | |
145 | ||
4ebb342f | 146 | static const SSL_METHOD *ssl3_get_client_method(int ver) |
d02b48c6 | 147 | { |
58964a49 | 148 | if (ver == SSL3_VERSION) |
d02b48c6 RE |
149 | return(SSLv3_client_method()); |
150 | else | |
151 | return(NULL); | |
152 | } | |
153 | ||
f3b656b2 DSH |
154 | IMPLEMENT_ssl3_meth_func(SSLv3_client_method, |
155 | ssl_undefined_function, | |
156 | ssl3_connect, | |
157 | ssl3_get_client_method) | |
d02b48c6 | 158 | |
6b691a5c | 159 | int ssl3_connect(SSL *s) |
d02b48c6 | 160 | { |
8d6ad9e3 | 161 | BUF_MEM *buf=NULL; |
7bbcb2f6 | 162 | unsigned long Time=(unsigned long)time(NULL),l; |
d02b48c6 | 163 | long num1; |
45d87a1f | 164 | void (*cb)(const SSL *ssl,int type,int val)=NULL; |
d02b48c6 | 165 | int ret= -1; |
d02b48c6 RE |
166 | int new_state,state,skip=0;; |
167 | ||
eb952088 | 168 | RAND_add(&Time,sizeof(Time),0); |
d02b48c6 | 169 | ERR_clear_error(); |
58964a49 | 170 | clear_sys_error(); |
d02b48c6 RE |
171 | |
172 | if (s->info_callback != NULL) | |
173 | cb=s->info_callback; | |
174 | else if (s->ctx->info_callback != NULL) | |
175 | cb=s->ctx->info_callback; | |
176 | ||
d02b48c6 | 177 | s->in_handshake++; |
979689aa | 178 | if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s); |
d02b48c6 RE |
179 | |
180 | for (;;) | |
181 | { | |
182 | state=s->state; | |
183 | ||
184 | switch(s->state) | |
185 | { | |
186 | case SSL_ST_RENEGOTIATE: | |
187 | s->new_session=1; | |
188 | s->state=SSL_ST_CONNECT; | |
413c4f45 | 189 | s->ctx->stats.sess_connect_renegotiate++; |
d02b48c6 RE |
190 | /* break */ |
191 | case SSL_ST_BEFORE: | |
192 | case SSL_ST_CONNECT: | |
193 | case SSL_ST_BEFORE|SSL_ST_CONNECT: | |
194 | case SSL_ST_OK|SSL_ST_CONNECT: | |
195 | ||
413c4f45 | 196 | s->server=0; |
d02b48c6 RE |
197 | if (cb != NULL) cb(s,SSL_CB_HANDSHAKE_START,1); |
198 | ||
58964a49 | 199 | if ((s->version & 0xff00 ) != 0x0300) |
bbb8de09 | 200 | { |
5277d7cb | 201 | SSLerr(SSL_F_SSL3_CONNECT, ERR_R_INTERNAL_ERROR); |
bbb8de09 BM |
202 | ret = -1; |
203 | goto end; | |
204 | } | |
205 | ||
58964a49 | 206 | /* s->version=SSL3_VERSION; */ |
d02b48c6 RE |
207 | s->type=SSL_ST_CONNECT; |
208 | ||
209 | if (s->init_buf == NULL) | |
210 | { | |
211 | if ((buf=BUF_MEM_new()) == NULL) | |
212 | { | |
213 | ret= -1; | |
214 | goto end; | |
215 | } | |
216 | if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH)) | |
217 | { | |
218 | ret= -1; | |
219 | goto end; | |
220 | } | |
221 | s->init_buf=buf; | |
8d6ad9e3 | 222 | buf=NULL; |
d02b48c6 RE |
223 | } |
224 | ||
225 | if (!ssl3_setup_buffers(s)) { ret= -1; goto end; } | |
226 | ||
227 | /* setup buffing BIO */ | |
58964a49 | 228 | if (!ssl_init_wbio_buffer(s,0)) { ret= -1; goto end; } |
d02b48c6 RE |
229 | |
230 | /* don't push the buffering BIO quite yet */ | |
231 | ||
232 | ssl3_init_finished_mac(s); | |
233 | ||
234 | s->state=SSL3_ST_CW_CLNT_HELLO_A; | |
413c4f45 | 235 | s->ctx->stats.sess_connect++; |
d02b48c6 RE |
236 | s->init_num=0; |
237 | break; | |
238 | ||
239 | case SSL3_ST_CW_CLNT_HELLO_A: | |
240 | case SSL3_ST_CW_CLNT_HELLO_B: | |
241 | ||
242 | s->shutdown=0; | |
243 | ret=ssl3_client_hello(s); | |
244 | if (ret <= 0) goto end; | |
245 | s->state=SSL3_ST_CR_SRVR_HELLO_A; | |
246 | s->init_num=0; | |
247 | ||
248 | /* turn on buffering for the next lot of output */ | |
58964a49 RE |
249 | if (s->bbio != s->wbio) |
250 | s->wbio=BIO_push(s->bbio,s->wbio); | |
d02b48c6 RE |
251 | |
252 | break; | |
253 | ||
254 | case SSL3_ST_CR_SRVR_HELLO_A: | |
255 | case SSL3_ST_CR_SRVR_HELLO_B: | |
256 | ret=ssl3_get_server_hello(s); | |
257 | if (ret <= 0) goto end; | |
ed3883d2 BM |
258 | #ifndef OPENSSL_NO_TLSEXT |
259 | { | |
f1fd4544 BM |
260 | int al; |
261 | if (ssl_check_tlsext(s,&al) <= 0) | |
262 | { | |
263 | ssl3_send_alert(s,SSL3_AL_FATAL,al); /* XXX does this *have* to be fatal? */ | |
ed3883d2 | 264 | SSLerr(SSL_F_SSL3_CONNECT,SSL_R_SERVERHELLO_TLS_EXT); |
f1fd4544 | 265 | ret = -1; |
ed3883d2 | 266 | goto end; |
f1fd4544 | 267 | } |
ed3883d2 BM |
268 | } |
269 | #endif | |
d02b48c6 RE |
270 | if (s->hit) |
271 | s->state=SSL3_ST_CR_FINISHED_A; | |
272 | else | |
273 | s->state=SSL3_ST_CR_CERT_A; | |
274 | s->init_num=0; | |
275 | break; | |
276 | ||
277 | case SSL3_ST_CR_CERT_A: | |
278 | case SSL3_ST_CR_CERT_B: | |
ea262260 | 279 | /* Check if it is anon DH/ECDH */ |
d02b48c6 RE |
280 | if (!(s->s3->tmp.new_cipher->algorithms & SSL_aNULL)) |
281 | { | |
282 | ret=ssl3_get_server_certificate(s); | |
283 | if (ret <= 0) goto end; | |
284 | } | |
285 | else | |
286 | skip=1; | |
287 | s->state=SSL3_ST_CR_KEY_EXCH_A; | |
288 | s->init_num=0; | |
289 | break; | |
290 | ||
291 | case SSL3_ST_CR_KEY_EXCH_A: | |
292 | case SSL3_ST_CR_KEY_EXCH_B: | |
293 | ret=ssl3_get_key_exchange(s); | |
294 | if (ret <= 0) goto end; | |
295 | s->state=SSL3_ST_CR_CERT_REQ_A; | |
296 | s->init_num=0; | |
297 | ||
298 | /* at this point we check that we have the | |
299 | * required stuff from the server */ | |
300 | if (!ssl3_check_cert_and_algorithm(s)) | |
301 | { | |
302 | ret= -1; | |
303 | goto end; | |
304 | } | |
305 | break; | |
306 | ||
307 | case SSL3_ST_CR_CERT_REQ_A: | |
308 | case SSL3_ST_CR_CERT_REQ_B: | |
309 | ret=ssl3_get_certificate_request(s); | |
310 | if (ret <= 0) goto end; | |
311 | s->state=SSL3_ST_CR_SRVR_DONE_A; | |
312 | s->init_num=0; | |
313 | break; | |
314 | ||
315 | case SSL3_ST_CR_SRVR_DONE_A: | |
316 | case SSL3_ST_CR_SRVR_DONE_B: | |
317 | ret=ssl3_get_server_done(s); | |
318 | if (ret <= 0) goto end; | |
319 | if (s->s3->tmp.cert_req) | |
320 | s->state=SSL3_ST_CW_CERT_A; | |
321 | else | |
322 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
323 | s->init_num=0; | |
324 | ||
325 | break; | |
326 | ||
327 | case SSL3_ST_CW_CERT_A: | |
328 | case SSL3_ST_CW_CERT_B: | |
329 | case SSL3_ST_CW_CERT_C: | |
95d29597 | 330 | case SSL3_ST_CW_CERT_D: |
d02b48c6 RE |
331 | ret=ssl3_send_client_certificate(s); |
332 | if (ret <= 0) goto end; | |
333 | s->state=SSL3_ST_CW_KEY_EXCH_A; | |
334 | s->init_num=0; | |
335 | break; | |
336 | ||
337 | case SSL3_ST_CW_KEY_EXCH_A: | |
338 | case SSL3_ST_CW_KEY_EXCH_B: | |
339 | ret=ssl3_send_client_key_exchange(s); | |
340 | if (ret <= 0) goto end; | |
341 | l=s->s3->tmp.new_cipher->algorithms; | |
342 | /* EAY EAY EAY need to check for DH fix cert | |
343 | * sent back */ | |
58964a49 RE |
344 | /* For TLS, cert_req is set to 2, so a cert chain |
345 | * of nothing is sent, but no verify packet is sent */ | |
ea262260 BM |
346 | /* XXX: For now, we do not support client |
347 | * authentication in ECDH cipher suites with | |
348 | * ECDH (rather than ECDSA) certificates. | |
349 | * We need to skip the certificate verify | |
350 | * message when client's ECDH public key is sent | |
351 | * inside the client certificate. | |
352 | */ | |
58964a49 | 353 | if (s->s3->tmp.cert_req == 1) |
d02b48c6 RE |
354 | { |
355 | s->state=SSL3_ST_CW_CERT_VRFY_A; | |
356 | } | |
357 | else | |
358 | { | |
359 | s->state=SSL3_ST_CW_CHANGE_A; | |
360 | s->s3->change_cipher_spec=0; | |
361 | } | |
362 | ||
363 | s->init_num=0; | |
364 | break; | |
365 | ||
366 | case SSL3_ST_CW_CERT_VRFY_A: | |
367 | case SSL3_ST_CW_CERT_VRFY_B: | |
368 | ret=ssl3_send_client_verify(s); | |
369 | if (ret <= 0) goto end; | |
370 | s->state=SSL3_ST_CW_CHANGE_A; | |
371 | s->init_num=0; | |
372 | s->s3->change_cipher_spec=0; | |
373 | break; | |
374 | ||
375 | case SSL3_ST_CW_CHANGE_A: | |
376 | case SSL3_ST_CW_CHANGE_B: | |
377 | ret=ssl3_send_change_cipher_spec(s, | |
378 | SSL3_ST_CW_CHANGE_A,SSL3_ST_CW_CHANGE_B); | |
379 | if (ret <= 0) goto end; | |
380 | s->state=SSL3_ST_CW_FINISHED_A; | |
381 | s->init_num=0; | |
382 | ||
383 | s->session->cipher=s->s3->tmp.new_cipher; | |
09b6c2ef DSH |
384 | #ifdef OPENSSL_NO_COMP |
385 | s->session->compress_meth=0; | |
386 | #else | |
413c4f45 MC |
387 | if (s->s3->tmp.new_compression == NULL) |
388 | s->session->compress_meth=0; | |
389 | else | |
390 | s->session->compress_meth= | |
391 | s->s3->tmp.new_compression->id; | |
09b6c2ef | 392 | #endif |
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; | |
09b6c2ef | 536 | int i; |
d02b48c6 | 537 | unsigned long Time,l; |
09b6c2ef DSH |
538 | #ifndef OPENSSL_NO_COMP |
539 | int j; | |
413c4f45 | 540 | SSL_COMP *comp; |
09b6c2ef | 541 | #endif |
d02b48c6 RE |
542 | |
543 | buf=(unsigned char *)s->init_buf->data; | |
544 | if (s->state == SSL3_ST_CW_CLNT_HELLO_A) | |
545 | { | |
546 | if ((s->session == NULL) || | |
dfeab068 RE |
547 | (s->session->ssl_version != s->version) || |
548 | (s->session->not_resumable)) | |
d02b48c6 RE |
549 | { |
550 | if (!ssl_get_new_session(s,0)) | |
551 | goto err; | |
552 | } | |
553 | /* else use the pre-loaded session */ | |
554 | ||
555 | p=s->s3->client_random; | |
7bbcb2f6 | 556 | Time=(unsigned long)time(NULL); /* Time */ |
d02b48c6 | 557 | l2n(Time,p); |
7c7667b8 NL |
558 | if (RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-4) <= 0) |
559 | goto err; | |
d02b48c6 RE |
560 | |
561 | /* Do the message type and length last */ | |
562 | d=p= &(buf[4]); | |
563 | ||
58964a49 RE |
564 | *(p++)=s->version>>8; |
565 | *(p++)=s->version&0xff; | |
413c4f45 | 566 | s->client_version=s->version; |
d02b48c6 RE |
567 | |
568 | /* Random stuff */ | |
569 | memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE); | |
570 | p+=SSL3_RANDOM_SIZE; | |
571 | ||
572 | /* Session ID */ | |
573 | if (s->new_session) | |
574 | i=0; | |
575 | else | |
576 | i=s->session->session_id_length; | |
577 | *(p++)=i; | |
578 | if (i != 0) | |
579 | { | |
27545970 | 580 | if (i > (int)sizeof(s->session->session_id)) |
5574e0ed BM |
581 | { |
582 | SSLerr(SSL_F_SSL3_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); | |
583 | goto err; | |
584 | } | |
d02b48c6 RE |
585 | memcpy(p,s->session->session_id,i); |
586 | p+=i; | |
587 | } | |
588 | ||
589 | /* Ciphers supported */ | |
c6c2e313 | 590 | i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0); |
d02b48c6 RE |
591 | if (i == 0) |
592 | { | |
593 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE); | |
594 | goto err; | |
595 | } | |
596 | s2n(i,p); | |
597 | p+=i; | |
598 | ||
dfeab068 | 599 | /* COMPRESSION */ |
09b6c2ef DSH |
600 | #ifdef OPENSSL_NO_COMP |
601 | *(p++)=1; | |
602 | #else | |
566dda07 DSH |
603 | |
604 | if ((s->options & SSL_OP_NO_COMPRESSION) | |
605 | || !s->ctx->comp_methods) | |
413c4f45 MC |
606 | j=0; |
607 | else | |
f73e07cf | 608 | j=sk_SSL_COMP_num(s->ctx->comp_methods); |
413c4f45 MC |
609 | *(p++)=1+j; |
610 | for (i=0; i<j; i++) | |
611 | { | |
f73e07cf | 612 | comp=sk_SSL_COMP_value(s->ctx->comp_methods,i); |
413c4f45 MC |
613 | *(p++)=comp->id; |
614 | } | |
09b6c2ef | 615 | #endif |
413c4f45 | 616 | *(p++)=0; /* Add the NULL method */ |
ed3883d2 | 617 | #ifndef OPENSSL_NO_TLSEXT |
f1fd4544 BM |
618 | if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL) |
619 | { | |
ed3883d2 BM |
620 | SSLerr(SSL_F_SSL3_CLIENT_HELLO,ERR_R_INTERNAL_ERROR); |
621 | goto err; | |
f1fd4544 | 622 | } |
ed3883d2 | 623 | #endif |
d02b48c6 RE |
624 | |
625 | l=(p-d); | |
626 | d=buf; | |
627 | *(d++)=SSL3_MT_CLIENT_HELLO; | |
628 | l2n3(l,d); | |
629 | ||
630 | s->state=SSL3_ST_CW_CLNT_HELLO_B; | |
631 | /* number of bytes to write */ | |
632 | s->init_num=p-buf; | |
633 | s->init_off=0; | |
634 | } | |
635 | ||
636 | /* SSL3_ST_CW_CLNT_HELLO_B */ | |
637 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
638 | err: | |
639 | return(-1); | |
640 | } | |
641 | ||
36d16f8e | 642 | int ssl3_get_server_hello(SSL *s) |
d02b48c6 | 643 | { |
f73e07cf | 644 | STACK_OF(SSL_CIPHER) *sk; |
d02b48c6 RE |
645 | SSL_CIPHER *c; |
646 | unsigned char *p,*d; | |
647 | int i,al,ok; | |
648 | unsigned int j; | |
649 | long n; | |
09b6c2ef | 650 | #ifndef OPENSSL_NO_COMP |
413c4f45 | 651 | SSL_COMP *comp; |
09b6c2ef | 652 | #endif |
d02b48c6 | 653 | |
36d16f8e | 654 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
655 | SSL3_ST_CR_SRVR_HELLO_A, |
656 | SSL3_ST_CR_SRVR_HELLO_B, | |
36d16f8e | 657 | -1, |
d02b48c6 RE |
658 | 300, /* ?? */ |
659 | &ok); | |
660 | ||
661 | if (!ok) return((int)n); | |
36d16f8e BL |
662 | |
663 | if ( SSL_version(s) == DTLS1_VERSION) | |
664 | { | |
665 | if ( s->s3->tmp.message_type == DTLS1_MT_HELLO_VERIFY_REQUEST) | |
666 | { | |
667 | if ( s->d1->send_cookie == 0) | |
668 | { | |
669 | s->s3->tmp.reuse_message = 1; | |
670 | return 1; | |
671 | } | |
672 | else /* already sent a cookie */ | |
673 | { | |
674 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 675 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
676 | goto f_err; |
677 | } | |
678 | } | |
679 | } | |
680 | ||
681 | if ( s->s3->tmp.message_type != SSL3_MT_SERVER_HELLO) | |
682 | { | |
683 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
aa4ce731 | 684 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_MESSAGE_TYPE); |
36d16f8e BL |
685 | goto f_err; |
686 | } | |
687 | ||
48948d53 | 688 | d=p=(unsigned char *)s->init_msg; |
d02b48c6 | 689 | |
58964a49 | 690 | if ((p[0] != (s->version>>8)) || (p[1] != (s->version&0xff))) |
d02b48c6 RE |
691 | { |
692 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_SSL_VERSION); | |
58964a49 RE |
693 | s->version=(s->version&0xff00)|p[1]; |
694 | al=SSL_AD_PROTOCOL_VERSION; | |
695 | goto f_err; | |
d02b48c6 RE |
696 | } |
697 | p+=2; | |
698 | ||
699 | /* load the server hello data */ | |
700 | /* load the server random */ | |
701 | memcpy(s->s3->server_random,p,SSL3_RANDOM_SIZE); | |
702 | p+=SSL3_RANDOM_SIZE; | |
703 | ||
704 | /* get the session-id */ | |
705 | j= *(p++); | |
706 | ||
a4f53a1c | 707 | if ((j > sizeof s->session->session_id) || (j > SSL3_SESSION_ID_SIZE)) |
d02b48c6 | 708 | { |
a4f53a1c BM |
709 | al=SSL_AD_ILLEGAL_PARAMETER; |
710 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_SSL3_SESSION_ID_TOO_LONG); | |
711 | goto f_err; | |
d02b48c6 | 712 | } |
54a656ef | 713 | |
b4cadc6e BL |
714 | if (j != 0 && j == s->session->session_id_length |
715 | && memcmp(p,s->session->session_id,j) == 0) | |
716 | { | |
717 | if(s->sid_ctx_length != s->session->sid_ctx_length | |
718 | || memcmp(s->session->sid_ctx,s->sid_ctx,s->sid_ctx_length)) | |
719 | { | |
a4f53a1c | 720 | /* actually a client application bug */ |
b4cadc6e BL |
721 | al=SSL_AD_ILLEGAL_PARAMETER; |
722 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
723 | goto f_err; | |
724 | } | |
725 | s->hit=1; | |
726 | } | |
58964a49 | 727 | else /* a miss or crap from the other end */ |
d02b48c6 | 728 | { |
58964a49 RE |
729 | /* If we were trying for session-id reuse, make a new |
730 | * SSL_SESSION so we don't stuff up other people */ | |
d02b48c6 | 731 | s->hit=0; |
58964a49 RE |
732 | if (s->session->session_id_length > 0) |
733 | { | |
734 | if (!ssl_get_new_session(s,0)) | |
735 | { | |
736 | al=SSL_AD_INTERNAL_ERROR; | |
737 | goto f_err; | |
738 | } | |
739 | } | |
740 | s->session->session_id_length=j; | |
741 | memcpy(s->session->session_id,p,j); /* j could be 0 */ | |
d02b48c6 RE |
742 | } |
743 | p+=j; | |
744 | c=ssl_get_cipher_by_char(s,p); | |
745 | if (c == NULL) | |
746 | { | |
747 | /* unknown cipher */ | |
58964a49 | 748 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
749 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNKNOWN_CIPHER_RETURNED); |
750 | goto f_err; | |
751 | } | |
752 | p+=ssl_put_cipher_by_char(s,NULL,NULL); | |
753 | ||
754 | sk=ssl_get_ciphers_by_id(s); | |
f73e07cf | 755 | i=sk_SSL_CIPHER_find(sk,c); |
d02b48c6 RE |
756 | if (i < 0) |
757 | { | |
758 | /* we did not say we would use this cipher */ | |
58964a49 | 759 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
760 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_WRONG_CIPHER_RETURNED); |
761 | goto f_err; | |
762 | } | |
763 | ||
6a8afe22 LJ |
764 | /* Depending on the session caching (internal/external), the cipher |
765 | and/or cipher_id values may not be set. Make sure that | |
766 | cipher_id is set and use it for comparison. */ | |
767 | if (s->session->cipher) | |
768 | s->session->cipher_id = s->session->cipher->id; | |
c5662053 | 769 | if (s->hit && (s->session->cipher_id != c->id)) |
d02b48c6 | 770 | { |
58964a49 | 771 | if (!(s->options & |
d02b48c6 RE |
772 | SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG)) |
773 | { | |
58964a49 | 774 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
775 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); |
776 | goto f_err; | |
777 | } | |
778 | } | |
779 | s->s3->tmp.new_cipher=c; | |
780 | ||
781 | /* lets get the compression algorithm */ | |
dfeab068 | 782 | /* COMPRESSION */ |
09b6c2ef DSH |
783 | #ifdef OPENSSL_NO_COMP |
784 | if (*(p++) != 0) | |
785 | { | |
786 | al=SSL_AD_ILLEGAL_PARAMETER; | |
787 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
788 | goto f_err; | |
789 | } | |
790 | #else | |
d02b48c6 | 791 | j= *(p++); |
566dda07 | 792 | if ((j == 0) || (s->options & SSL_OP_NO_COMPRESSION)) |
413c4f45 MC |
793 | comp=NULL; |
794 | else | |
795 | comp=ssl3_comp_find(s->ctx->comp_methods,j); | |
796 | ||
797 | if ((j != 0) && (comp == NULL)) | |
d02b48c6 | 798 | { |
58964a49 | 799 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
800 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); |
801 | goto f_err; | |
802 | } | |
413c4f45 MC |
803 | else |
804 | { | |
805 | s->s3->tmp.new_compression=comp; | |
806 | } | |
09b6c2ef | 807 | #endif |
ed3883d2 BM |
808 | #ifndef OPENSSL_NO_TLSEXT |
809 | /* TLS extensions*/ | |
810 | if (s->version > SSL3_VERSION) | |
f1fd4544 BM |
811 | { |
812 | if (!ssl_parse_serverhello_tlsext(s,&p,d,n, &al)) | |
813 | { | |
814 | /* 'al' set by ssl_parse_serverhello_tlsext */ | |
ed3883d2 BM |
815 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_PARSE_TLS_EXT); |
816 | goto f_err; | |
f1fd4544 | 817 | } |
ed3883d2 | 818 | } |
ed3883d2 | 819 | #endif |
d02b48c6 RE |
820 | |
821 | if (p != (d+n)) | |
822 | { | |
823 | /* wrong packet length */ | |
58964a49 | 824 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
825 | SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_BAD_PACKET_LENGTH); |
826 | goto err; | |
827 | } | |
828 | ||
829 | return(1); | |
830 | f_err: | |
831 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
832 | err: | |
833 | return(-1); | |
834 | } | |
835 | ||
36d16f8e | 836 | int ssl3_get_server_certificate(SSL *s) |
d02b48c6 RE |
837 | { |
838 | int al,i,ok,ret= -1; | |
839 | unsigned long n,nc,llen,l; | |
840 | X509 *x=NULL; | |
875a644a RL |
841 | const unsigned char *q,*p; |
842 | unsigned char *d; | |
f73e07cf | 843 | STACK_OF(X509) *sk=NULL; |
b56bce4f | 844 | SESS_CERT *sc; |
d02b48c6 | 845 | EVP_PKEY *pkey=NULL; |
57376542 | 846 | int need_cert = 1; /* VRS: 0=> will allow null cert if auth == KRB5 */ |
d02b48c6 | 847 | |
36d16f8e | 848 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
849 | SSL3_ST_CR_CERT_A, |
850 | SSL3_ST_CR_CERT_B, | |
851 | -1, | |
c0f5dd07 | 852 | s->max_cert_list, |
d02b48c6 RE |
853 | &ok); |
854 | ||
855 | if (!ok) return((int)n); | |
856 | ||
857 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_KEY_EXCHANGE) | |
858 | { | |
859 | s->s3->tmp.reuse_message=1; | |
860 | return(1); | |
861 | } | |
862 | ||
863 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE) | |
864 | { | |
58964a49 | 865 | al=SSL_AD_UNEXPECTED_MESSAGE; |
d02b48c6 RE |
866 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_BAD_MESSAGE_TYPE); |
867 | goto f_err; | |
868 | } | |
875a644a | 869 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 870 | |
f73e07cf | 871 | if ((sk=sk_X509_new_null()) == NULL) |
d02b48c6 RE |
872 | { |
873 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
874 | goto err; | |
875 | } | |
876 | ||
877 | n2l3(p,llen); | |
878 | if (llen+3 != n) | |
879 | { | |
58964a49 | 880 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
881 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_LENGTH_MISMATCH); |
882 | goto f_err; | |
883 | } | |
884 | for (nc=0; nc<llen; ) | |
885 | { | |
886 | n2l3(p,l); | |
887 | if ((l+nc+3) > llen) | |
888 | { | |
58964a49 | 889 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
890 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
891 | goto f_err; | |
892 | } | |
893 | ||
894 | q=p; | |
895 | x=d2i_X509(NULL,&q,l); | |
896 | if (x == NULL) | |
897 | { | |
58964a49 | 898 | al=SSL_AD_BAD_CERTIFICATE; |
d02b48c6 RE |
899 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_ASN1_LIB); |
900 | goto f_err; | |
901 | } | |
902 | if (q != (p+l)) | |
903 | { | |
58964a49 | 904 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
905 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERT_LENGTH_MISMATCH); |
906 | goto f_err; | |
907 | } | |
f73e07cf | 908 | if (!sk_X509_push(sk,x)) |
d02b48c6 RE |
909 | { |
910 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,ERR_R_MALLOC_FAILURE); | |
911 | goto err; | |
912 | } | |
913 | x=NULL; | |
914 | nc+=l+3; | |
915 | p=q; | |
916 | } | |
917 | ||
918 | i=ssl_verify_cert_chain(s,sk); | |
82d5d46c RL |
919 | if ((s->verify_mode != SSL_VERIFY_NONE) && (!i) |
920 | #ifndef OPENSSL_NO_KRB5 | |
57376542 BM |
921 | && (s->s3->tmp.new_cipher->algorithms & (SSL_MKEY_MASK|SSL_AUTH_MASK)) |
922 | != (SSL_aKRB5|SSL_kKRB5) | |
82d5d46c | 923 | #endif /* OPENSSL_NO_KRB5 */ |
57376542 | 924 | ) |
d02b48c6 RE |
925 | { |
926 | al=ssl_verify_alarm_type(s->verify_result); | |
927 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE,SSL_R_CERTIFICATE_VERIFY_FAILED); | |
928 | goto f_err; | |
929 | } | |
1fab73ac | 930 | ERR_clear_error(); /* but we keep s->verify_result */ |
d02b48c6 | 931 | |
b56bce4f BM |
932 | sc=ssl_sess_cert_new(); |
933 | if (sc == NULL) goto err; | |
d02b48c6 | 934 | |
b56bce4f BM |
935 | if (s->session->sess_cert) ssl_sess_cert_free(s->session->sess_cert); |
936 | s->session->sess_cert=sc; | |
d02b48c6 | 937 | |
b56bce4f | 938 | sc->cert_chain=sk; |
98e04f9e BM |
939 | /* Inconsistency alert: cert_chain does include the peer's |
940 | * certificate, which we don't include in s3_srvr.c */ | |
f73e07cf | 941 | x=sk_X509_value(sk,0); |
d02b48c6 | 942 | sk=NULL; |
2a1ef754 | 943 | /* VRS 19990621: possible memory leak; sk=null ==> !sk_pop_free() @end*/ |
d02b48c6 RE |
944 | |
945 | pkey=X509_get_pubkey(x); | |
946 | ||
57376542 BM |
947 | /* VRS: allow null cert if auth == KRB5 */ |
948 | need_cert = ((s->s3->tmp.new_cipher->algorithms | |
949 | & (SSL_MKEY_MASK|SSL_AUTH_MASK)) | |
950 | == (SSL_aKRB5|SSL_kKRB5))? 0: 1; | |
f9b3bff6 RL |
951 | |
952 | #ifdef KSSL_DEBUG | |
953 | printf("pkey,x = %p, %p\n", pkey,x); | |
954 | printf("ssl_cert_type(x,pkey) = %d\n", ssl_cert_type(x,pkey)); | |
955 | printf("cipher, alg, nc = %s, %lx, %d\n", s->s3->tmp.new_cipher->name, | |
57376542 | 956 | s->s3->tmp.new_cipher->algorithms, need_cert); |
f9b3bff6 RL |
957 | #endif /* KSSL_DEBUG */ |
958 | ||
2a1ef754 | 959 | if (need_cert && ((pkey == NULL) || EVP_PKEY_missing_parameters(pkey))) |
d02b48c6 RE |
960 | { |
961 | x=NULL; | |
962 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
963 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
964 | SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); | |
d02b48c6 RE |
965 | goto f_err; |
966 | } | |
967 | ||
968 | i=ssl_cert_type(x,pkey); | |
f9b3bff6 | 969 | if (need_cert && i < 0) |
d02b48c6 RE |
970 | { |
971 | x=NULL; | |
972 | al=SSL3_AL_FATAL; | |
2a1ef754 RL |
973 | SSLerr(SSL_F_SSL3_GET_SERVER_CERTIFICATE, |
974 | SSL_R_UNKNOWN_CERTIFICATE_TYPE); | |
d02b48c6 RE |
975 | goto f_err; |
976 | } | |
977 | ||
57376542 BM |
978 | if (need_cert) |
979 | { | |
980 | sc->peer_cert_type=i; | |
981 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
982 | /* Why would the following ever happen? | |
983 | * We just created sc a couple of lines ago. */ | |
984 | if (sc->peer_pkeys[i].x509 != NULL) | |
985 | X509_free(sc->peer_pkeys[i].x509); | |
986 | sc->peer_pkeys[i].x509=x; | |
987 | sc->peer_key= &(sc->peer_pkeys[i]); | |
988 | ||
989 | if (s->session->peer != NULL) | |
990 | X509_free(s->session->peer); | |
991 | CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509); | |
992 | s->session->peer=x; | |
993 | } | |
994 | else | |
995 | { | |
996 | sc->peer_cert_type=i; | |
997 | sc->peer_key= NULL; | |
998 | ||
999 | if (s->session->peer != NULL) | |
1000 | X509_free(s->session->peer); | |
1001 | s->session->peer=NULL; | |
1002 | } | |
0dd2254d | 1003 | s->session->verify_result = s->verify_result; |
d02b48c6 RE |
1004 | |
1005 | x=NULL; | |
1006 | ret=1; | |
1007 | ||
1008 | if (0) | |
1009 | { | |
1010 | f_err: | |
1011 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1012 | } | |
1013 | err: | |
a8236c8c DSH |
1014 | EVP_PKEY_free(pkey); |
1015 | X509_free(x); | |
f73e07cf | 1016 | sk_X509_pop_free(sk,X509_free); |
d02b48c6 RE |
1017 | return(ret); |
1018 | } | |
1019 | ||
36d16f8e | 1020 | int ssl3_get_key_exchange(SSL *s) |
d02b48c6 | 1021 | { |
bc36ee62 | 1022 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1023 | unsigned char *q,md_buf[EVP_MAX_MD_SIZE*2]; |
1024 | #endif | |
1025 | EVP_MD_CTX md_ctx; | |
1026 | unsigned char *param,*p; | |
1027 | int al,i,j,param_len,ok; | |
1028 | long n,alg; | |
1029 | EVP_PKEY *pkey=NULL; | |
bc36ee62 | 1030 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1031 | RSA *rsa=NULL; |
79df9d62 | 1032 | #endif |
bc36ee62 | 1033 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 1034 | DH *dh=NULL; |
58964a49 | 1035 | #endif |
ea262260 BM |
1036 | #ifndef OPENSSL_NO_ECDH |
1037 | EC_KEY *ecdh = NULL; | |
1038 | BN_CTX *bn_ctx = NULL; | |
1039 | EC_POINT *srvr_ecpoint = NULL; | |
1040 | int curve_nid = 0; | |
1041 | int encoded_pt_len = 0; | |
1042 | #endif | |
d02b48c6 | 1043 | |
37a7cd1a BM |
1044 | /* use same message size as in ssl3_get_certificate_request() |
1045 | * as ServerKeyExchange message may be skipped */ | |
36d16f8e | 1046 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1047 | SSL3_ST_CR_KEY_EXCH_A, |
1048 | SSL3_ST_CR_KEY_EXCH_B, | |
1049 | -1, | |
c0f5dd07 | 1050 | s->max_cert_list, |
d02b48c6 RE |
1051 | &ok); |
1052 | ||
1053 | if (!ok) return((int)n); | |
1054 | ||
1055 | if (s->s3->tmp.message_type != SSL3_MT_SERVER_KEY_EXCHANGE) | |
1056 | { | |
1057 | s->s3->tmp.reuse_message=1; | |
1058 | return(1); | |
1059 | } | |
1060 | ||
48948d53 | 1061 | param=p=(unsigned char *)s->init_msg; |
d02b48c6 | 1062 | |
9d5cceac | 1063 | if (s->session->sess_cert != NULL) |
d02b48c6 | 1064 | { |
bc36ee62 | 1065 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 1066 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
d02b48c6 | 1067 | { |
b56bce4f BM |
1068 | RSA_free(s->session->sess_cert->peer_rsa_tmp); |
1069 | s->session->sess_cert->peer_rsa_tmp=NULL; | |
d02b48c6 RE |
1070 | } |
1071 | #endif | |
bc36ee62 | 1072 | #ifndef OPENSSL_NO_DH |
b56bce4f | 1073 | if (s->session->sess_cert->peer_dh_tmp) |
d02b48c6 | 1074 | { |
b56bce4f BM |
1075 | DH_free(s->session->sess_cert->peer_dh_tmp); |
1076 | s->session->sess_cert->peer_dh_tmp=NULL; | |
d02b48c6 | 1077 | } |
ea262260 BM |
1078 | #endif |
1079 | #ifndef OPENSSL_NO_ECDH | |
1080 | if (s->session->sess_cert->peer_ecdh_tmp) | |
1081 | { | |
1082 | EC_KEY_free(s->session->sess_cert->peer_ecdh_tmp); | |
1083 | s->session->sess_cert->peer_ecdh_tmp=NULL; | |
1084 | } | |
d02b48c6 RE |
1085 | #endif |
1086 | } | |
1087 | else | |
1088 | { | |
b56bce4f | 1089 | s->session->sess_cert=ssl_sess_cert_new(); |
d02b48c6 RE |
1090 | } |
1091 | ||
1092 | param_len=0; | |
1093 | alg=s->s3->tmp.new_cipher->algorithms; | |
dbad1690 | 1094 | EVP_MD_CTX_init(&md_ctx); |
d02b48c6 | 1095 | |
bc36ee62 | 1096 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1097 | if (alg & SSL_kRSA) |
1098 | { | |
1099 | if ((rsa=RSA_new()) == NULL) | |
1100 | { | |
1101 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1102 | goto err; | |
1103 | } | |
1104 | n2s(p,i); | |
1105 | param_len=i+2; | |
1106 | if (param_len > n) | |
1107 | { | |
58964a49 | 1108 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1109 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_MODULUS_LENGTH); |
1110 | goto f_err; | |
1111 | } | |
1112 | if (!(rsa->n=BN_bin2bn(p,i,rsa->n))) | |
1113 | { | |
1114 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1115 | goto err; | |
1116 | } | |
1117 | p+=i; | |
1118 | ||
1119 | n2s(p,i); | |
1120 | param_len+=i+2; | |
1121 | if (param_len > n) | |
1122 | { | |
58964a49 | 1123 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1124 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_E_LENGTH); |
1125 | goto f_err; | |
1126 | } | |
1127 | if (!(rsa->e=BN_bin2bn(p,i,rsa->e))) | |
1128 | { | |
1129 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1130 | goto err; | |
1131 | } | |
1132 | p+=i; | |
1133 | n-=param_len; | |
1134 | ||
d02b48c6 RE |
1135 | /* this should be because we are using an export cipher */ |
1136 | if (alg & SSL_aRSA) | |
b56bce4f | 1137 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1138 | else |
1139 | { | |
5277d7cb | 1140 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1141 | goto err; |
1142 | } | |
b56bce4f | 1143 | s->session->sess_cert->peer_rsa_tmp=rsa; |
6b521df3 | 1144 | rsa=NULL; |
d02b48c6 | 1145 | } |
bc36ee62 | 1146 | #else /* OPENSSL_NO_RSA */ |
3f2599d9 BM |
1147 | if (0) |
1148 | ; | |
d02b48c6 | 1149 | #endif |
bc36ee62 | 1150 | #ifndef OPENSSL_NO_DH |
3f2599d9 | 1151 | else if (alg & SSL_kEDH) |
d02b48c6 RE |
1152 | { |
1153 | if ((dh=DH_new()) == NULL) | |
1154 | { | |
1155 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1156 | goto err; | |
1157 | } | |
1158 | n2s(p,i); | |
1159 | param_len=i+2; | |
1160 | if (param_len > n) | |
1161 | { | |
58964a49 | 1162 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1163 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_P_LENGTH); |
1164 | goto f_err; | |
1165 | } | |
1166 | if (!(dh->p=BN_bin2bn(p,i,NULL))) | |
1167 | { | |
1168 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1169 | goto err; | |
1170 | } | |
1171 | p+=i; | |
1172 | ||
1173 | n2s(p,i); | |
1174 | param_len+=i+2; | |
1175 | if (param_len > n) | |
1176 | { | |
58964a49 | 1177 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1178 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_G_LENGTH); |
1179 | goto f_err; | |
1180 | } | |
1181 | if (!(dh->g=BN_bin2bn(p,i,NULL))) | |
1182 | { | |
1183 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1184 | goto err; | |
1185 | } | |
1186 | p+=i; | |
1187 | ||
1188 | n2s(p,i); | |
1189 | param_len+=i+2; | |
1190 | if (param_len > n) | |
1191 | { | |
58964a49 | 1192 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1193 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_DH_PUB_KEY_LENGTH); |
1194 | goto f_err; | |
1195 | } | |
1196 | if (!(dh->pub_key=BN_bin2bn(p,i,NULL))) | |
1197 | { | |
1198 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_BN_LIB); | |
1199 | goto err; | |
1200 | } | |
1201 | p+=i; | |
1202 | n-=param_len; | |
1203 | ||
bc36ee62 | 1204 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 1205 | if (alg & SSL_aRSA) |
b56bce4f | 1206 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
3f2599d9 BM |
1207 | #else |
1208 | if (0) | |
1209 | ; | |
d02b48c6 | 1210 | #endif |
bc36ee62 | 1211 | #ifndef OPENSSL_NO_DSA |
3f2599d9 | 1212 | else if (alg & SSL_aDSS) |
b56bce4f | 1213 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_DSA_SIGN].x509); |
d02b48c6 RE |
1214 | #endif |
1215 | /* else anonymous DH, so no certificate or pkey. */ | |
1216 | ||
b56bce4f | 1217 | s->session->sess_cert->peer_dh_tmp=dh; |
413c4f45 | 1218 | dh=NULL; |
d02b48c6 RE |
1219 | } |
1220 | else if ((alg & SSL_kDHr) || (alg & SSL_kDHd)) | |
1221 | { | |
58964a49 | 1222 | al=SSL_AD_ILLEGAL_PARAMETER; |
d02b48c6 RE |
1223 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); |
1224 | goto f_err; | |
1225 | } | |
bc36ee62 | 1226 | #endif /* !OPENSSL_NO_DH */ |
ea262260 BM |
1227 | |
1228 | #ifndef OPENSSL_NO_ECDH | |
1229 | else if (alg & SSL_kECDHE) | |
1230 | { | |
9dd84053 NL |
1231 | EC_GROUP *ngroup; |
1232 | const EC_GROUP *group; | |
1233 | ||
ea262260 BM |
1234 | if ((ecdh=EC_KEY_new()) == NULL) |
1235 | { | |
1236 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1237 | goto err; | |
1238 | } | |
1239 | ||
1240 | /* Extract elliptic curve parameters and the | |
1241 | * server's ephemeral ECDH public key. | |
1242 | * Keep accumulating lengths of various components in | |
1243 | * param_len and make sure it never exceeds n. | |
1244 | */ | |
1245 | ||
1246 | /* XXX: For now we only support named (not generic) curves | |
d56349a2 | 1247 | * and the ECParameters in this case is just three bytes. |
ea262260 | 1248 | */ |
d56349a2 | 1249 | param_len=3; |
ea262260 BM |
1250 | if ((param_len > n) || |
1251 | (*p != NAMED_CURVE_TYPE) || | |
d56349a2 | 1252 | ((curve_nid = curve_id2nid(*(p + 2))) == 0)) |
ea262260 BM |
1253 | { |
1254 | al=SSL_AD_INTERNAL_ERROR; | |
1255 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); | |
1256 | goto f_err; | |
1257 | } | |
1258 | ||
9dd84053 NL |
1259 | ngroup = EC_GROUP_new_by_curve_name(curve_nid); |
1260 | if (ngroup == NULL) | |
1261 | { | |
1262 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1263 | goto err; | |
1264 | } | |
1265 | if (EC_KEY_set_group(ecdh, ngroup) == 0) | |
ea262260 BM |
1266 | { |
1267 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_EC_LIB); | |
1268 | goto err; | |
1269 | } | |
9dd84053 NL |
1270 | EC_GROUP_free(ngroup); |
1271 | ||
1272 | group = EC_KEY_get0_group(ecdh); | |
ea262260 BM |
1273 | |
1274 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && | |
9dd84053 | 1275 | (EC_GROUP_get_degree(group) > 163)) |
ea262260 BM |
1276 | { |
1277 | al=SSL_AD_EXPORT_RESTRICTION; | |
1278 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER); | |
1279 | goto f_err; | |
1280 | } | |
1281 | ||
d56349a2 | 1282 | p+=3; |
ea262260 BM |
1283 | |
1284 | /* Next, get the encoded ECPoint */ | |
9dd84053 | 1285 | if (((srvr_ecpoint = EC_POINT_new(group)) == NULL) || |
ea262260 BM |
1286 | ((bn_ctx = BN_CTX_new()) == NULL)) |
1287 | { | |
1288 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1289 | goto err; | |
1290 | } | |
1291 | ||
1292 | encoded_pt_len = *p; /* length of encoded point */ | |
1293 | p+=1; | |
1294 | param_len += (1 + encoded_pt_len); | |
1295 | if ((param_len > n) || | |
9dd84053 | 1296 | (EC_POINT_oct2point(group, srvr_ecpoint, |
ea262260 BM |
1297 | p, encoded_pt_len, bn_ctx) == 0)) |
1298 | { | |
1299 | al=SSL_AD_DECODE_ERROR; | |
1300 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_ECPOINT); | |
1301 | goto f_err; | |
1302 | } | |
1303 | ||
1304 | n-=param_len; | |
1305 | p+=encoded_pt_len; | |
1306 | ||
1307 | /* The ECC/TLS specification does not mention | |
1308 | * the use of DSA to sign ECParameters in the server | |
1309 | * key exchange message. We do support RSA and ECDSA. | |
1310 | */ | |
1311 | if (0) ; | |
1312 | #ifndef OPENSSL_NO_RSA | |
1313 | else if (alg & SSL_aRSA) | |
1314 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); | |
1315 | #endif | |
1316 | #ifndef OPENSSL_NO_ECDSA | |
1317 | else if (alg & SSL_aECDSA) | |
1318 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
1319 | #endif | |
1320 | /* else anonymous ECDH, so no certificate or pkey. */ | |
9dd84053 | 1321 | EC_KEY_set_public_key(ecdh, srvr_ecpoint); |
ea262260 BM |
1322 | s->session->sess_cert->peer_ecdh_tmp=ecdh; |
1323 | ecdh=NULL; | |
1324 | BN_CTX_free(bn_ctx); | |
9dd84053 | 1325 | EC_POINT_free(srvr_ecpoint); |
ea262260 BM |
1326 | srvr_ecpoint = NULL; |
1327 | } | |
1328 | else if (alg & SSL_kECDH) | |
1329 | { | |
1330 | al=SSL_AD_UNEXPECTED_MESSAGE; | |
1331 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE); | |
1332 | goto f_err; | |
1333 | } | |
1334 | #endif /* !OPENSSL_NO_ECDH */ | |
dfeab068 RE |
1335 | if (alg & SSL_aFZA) |
1336 | { | |
1337 | al=SSL_AD_HANDSHAKE_FAILURE; | |
1338 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER); | |
1339 | goto f_err; | |
1340 | } | |
1341 | ||
d02b48c6 RE |
1342 | |
1343 | /* p points to the next byte, there are 'n' bytes left */ | |
1344 | ||
d02b48c6 RE |
1345 | /* if it was signed, check the signature */ |
1346 | if (pkey != NULL) | |
1347 | { | |
1348 | n2s(p,i); | |
1349 | n-=2; | |
1350 | j=EVP_PKEY_size(pkey); | |
1351 | ||
1352 | if ((i != n) || (n > j) || (n <= 0)) | |
1353 | { | |
1354 | /* wrong packet length */ | |
58964a49 | 1355 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 | 1356 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_WRONG_SIGNATURE_LENGTH); |
dfeab068 | 1357 | goto f_err; |
d02b48c6 RE |
1358 | } |
1359 | ||
bc36ee62 | 1360 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
1361 | if (pkey->type == EVP_PKEY_RSA) |
1362 | { | |
1363 | int num; | |
1364 | ||
1365 | j=0; | |
1366 | q=md_buf; | |
1367 | for (num=2; num > 0; num--) | |
1368 | { | |
20d2186c DSH |
1369 | EVP_DigestInit_ex(&md_ctx,(num == 2) |
1370 | ?s->ctx->md5:s->ctx->sha1, NULL); | |
d02b48c6 RE |
1371 | EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1372 | EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1373 | EVP_DigestUpdate(&md_ctx,param,param_len); | |
20d2186c | 1374 | EVP_DigestFinal_ex(&md_ctx,q,(unsigned int *)&i); |
d02b48c6 RE |
1375 | q+=i; |
1376 | j+=i; | |
1377 | } | |
1c80019a DSH |
1378 | i=RSA_verify(NID_md5_sha1, md_buf, j, p, n, |
1379 | pkey->pkey.rsa); | |
1380 | if (i < 0) | |
d02b48c6 | 1381 | { |
58964a49 | 1382 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1383 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_RSA_DECRYPT); |
1384 | goto f_err; | |
1385 | } | |
1c80019a | 1386 | if (i == 0) |
d02b48c6 RE |
1387 | { |
1388 | /* bad signature */ | |
58964a49 | 1389 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1390 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1391 | goto f_err; | |
1392 | } | |
1393 | } | |
1394 | else | |
1395 | #endif | |
bc36ee62 | 1396 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
1397 | if (pkey->type == EVP_PKEY_DSA) |
1398 | { | |
1399 | /* lets do DSS */ | |
20d2186c | 1400 | EVP_VerifyInit_ex(&md_ctx,EVP_dss1(), NULL); |
d02b48c6 RE |
1401 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); |
1402 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1403 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1404 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1405 | { | |
1406 | /* bad signature */ | |
58964a49 | 1407 | al=SSL_AD_DECRYPT_ERROR; |
d02b48c6 RE |
1408 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); |
1409 | goto f_err; | |
1410 | } | |
1411 | } | |
1412 | else | |
ea262260 BM |
1413 | #endif |
1414 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 1415 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
1416 | { |
1417 | /* let's do ECDSA */ | |
1418 | EVP_VerifyInit_ex(&md_ctx,EVP_ecdsa(), NULL); | |
1419 | EVP_VerifyUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE); | |
1420 | EVP_VerifyUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE); | |
1421 | EVP_VerifyUpdate(&md_ctx,param,param_len); | |
1422 | if (!EVP_VerifyFinal(&md_ctx,p,(int)n,pkey)) | |
1423 | { | |
1424 | /* bad signature */ | |
1425 | al=SSL_AD_DECRYPT_ERROR; | |
1426 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_BAD_SIGNATURE); | |
1427 | goto f_err; | |
1428 | } | |
1429 | } | |
1430 | else | |
d02b48c6 RE |
1431 | #endif |
1432 | { | |
5277d7cb | 1433 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1434 | goto err; |
1435 | } | |
1436 | } | |
1437 | else | |
1438 | { | |
1439 | /* still data left over */ | |
1440 | if (!(alg & SSL_aNULL)) | |
1441 | { | |
5277d7cb | 1442 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1443 | goto err; |
1444 | } | |
1445 | if (n != 0) | |
1446 | { | |
58964a49 | 1447 | al=SSL_AD_DECODE_ERROR; |
d02b48c6 RE |
1448 | SSLerr(SSL_F_SSL3_GET_KEY_EXCHANGE,SSL_R_EXTRA_DATA_IN_MESSAGE); |
1449 | goto f_err; | |
1450 | } | |
1451 | } | |
a8236c8c | 1452 | EVP_PKEY_free(pkey); |
dbad1690 | 1453 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1454 | return(1); |
1455 | f_err: | |
1456 | ssl3_send_alert(s,SSL3_AL_FATAL,al); | |
1457 | err: | |
a8236c8c | 1458 | EVP_PKEY_free(pkey); |
bc36ee62 | 1459 | #ifndef OPENSSL_NO_RSA |
6b521df3 BM |
1460 | if (rsa != NULL) |
1461 | RSA_free(rsa); | |
1462 | #endif | |
bc36ee62 | 1463 | #ifndef OPENSSL_NO_DH |
6b521df3 BM |
1464 | if (dh != NULL) |
1465 | DH_free(dh); | |
ea262260 BM |
1466 | #endif |
1467 | #ifndef OPENSSL_NO_ECDH | |
1468 | BN_CTX_free(bn_ctx); | |
1469 | EC_POINT_free(srvr_ecpoint); | |
1470 | if (ecdh != NULL) | |
1471 | EC_KEY_free(ecdh); | |
6b521df3 | 1472 | #endif |
dbad1690 | 1473 | EVP_MD_CTX_cleanup(&md_ctx); |
d02b48c6 RE |
1474 | return(-1); |
1475 | } | |
1476 | ||
36d16f8e | 1477 | int ssl3_get_certificate_request(SSL *s) |
d02b48c6 RE |
1478 | { |
1479 | int ok,ret=0; | |
58964a49 RE |
1480 | unsigned long n,nc,l; |
1481 | unsigned int llen,ctype_num,i; | |
d02b48c6 | 1482 | X509_NAME *xn=NULL; |
875a644a RL |
1483 | const unsigned char *p,*q; |
1484 | unsigned char *d; | |
f73e07cf | 1485 | STACK_OF(X509_NAME) *ca_sk=NULL; |
d02b48c6 | 1486 | |
36d16f8e | 1487 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1488 | SSL3_ST_CR_CERT_REQ_A, |
1489 | SSL3_ST_CR_CERT_REQ_B, | |
1490 | -1, | |
c0f5dd07 | 1491 | s->max_cert_list, |
d02b48c6 RE |
1492 | &ok); |
1493 | ||
1494 | if (!ok) return((int)n); | |
1495 | ||
1496 | s->s3->tmp.cert_req=0; | |
1497 | ||
1498 | if (s->s3->tmp.message_type == SSL3_MT_SERVER_DONE) | |
1499 | { | |
1500 | s->s3->tmp.reuse_message=1; | |
1501 | return(1); | |
1502 | } | |
1503 | ||
1504 | if (s->s3->tmp.message_type != SSL3_MT_CERTIFICATE_REQUEST) | |
1505 | { | |
58964a49 | 1506 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); |
d02b48c6 RE |
1507 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_WRONG_MESSAGE_TYPE); |
1508 | goto err; | |
1509 | } | |
1510 | ||
58964a49 RE |
1511 | /* TLS does not like anon-DH with client cert */ |
1512 | if (s->version > SSL3_VERSION) | |
1513 | { | |
1514 | l=s->s3->tmp.new_cipher->algorithms; | |
1515 | if (l & SSL_aNULL) | |
1516 | { | |
1517 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE); | |
1518 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_TLS_CLIENT_CERT_REQ_WITH_ANON_CIPHER); | |
1519 | goto err; | |
1520 | } | |
1521 | } | |
1522 | ||
875a644a | 1523 | p=d=(unsigned char *)s->init_msg; |
d02b48c6 | 1524 | |
f73e07cf | 1525 | if ((ca_sk=sk_X509_NAME_new(ca_dn_cmp)) == NULL) |
d02b48c6 RE |
1526 | { |
1527 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1528 | goto err; | |
1529 | } | |
1530 | ||
1531 | /* get the certificate types */ | |
1532 | ctype_num= *(p++); | |
1533 | if (ctype_num > SSL3_CT_NUMBER) | |
1534 | ctype_num=SSL3_CT_NUMBER; | |
1535 | for (i=0; i<ctype_num; i++) | |
1536 | s->s3->tmp.ctype[i]= p[i]; | |
1537 | p+=ctype_num; | |
1538 | ||
1539 | /* get the CA RDNs */ | |
1540 | n2s(p,llen); | |
dfeab068 RE |
1541 | #if 0 |
1542 | { | |
1543 | FILE *out; | |
1544 | out=fopen("/tmp/vsign.der","w"); | |
1545 | fwrite(p,1,llen,out); | |
1546 | fclose(out); | |
1547 | } | |
1548 | #endif | |
1549 | ||
d02b48c6 RE |
1550 | if ((llen+ctype_num+2+1) != n) |
1551 | { | |
58964a49 | 1552 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1553 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_LENGTH_MISMATCH); |
1554 | goto err; | |
1555 | } | |
1556 | ||
1557 | for (nc=0; nc<llen; ) | |
1558 | { | |
1559 | n2s(p,l); | |
1560 | if ((l+nc+2) > llen) | |
1561 | { | |
58964a49 | 1562 | if ((s->options & SSL_OP_NETSCAPE_CA_DN_BUG)) |
d02b48c6 | 1563 | goto cont; /* netscape bugs */ |
58964a49 | 1564 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1565 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_TOO_LONG); |
1566 | goto err; | |
1567 | } | |
1568 | ||
1569 | q=p; | |
1570 | ||
1571 | if ((xn=d2i_X509_NAME(NULL,&q,l)) == NULL) | |
1572 | { | |
657e60fa | 1573 | /* If netscape tolerance is on, ignore errors */ |
58964a49 | 1574 | if (s->options & SSL_OP_NETSCAPE_CA_DN_BUG) |
d02b48c6 RE |
1575 | goto cont; |
1576 | else | |
1577 | { | |
58964a49 | 1578 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1579 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_ASN1_LIB); |
1580 | goto err; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | if (q != (p+l)) | |
1585 | { | |
58964a49 | 1586 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 RE |
1587 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,SSL_R_CA_DN_LENGTH_MISMATCH); |
1588 | goto err; | |
1589 | } | |
f73e07cf | 1590 | if (!sk_X509_NAME_push(ca_sk,xn)) |
d02b48c6 RE |
1591 | { |
1592 | SSLerr(SSL_F_SSL3_GET_CERTIFICATE_REQUEST,ERR_R_MALLOC_FAILURE); | |
1593 | goto err; | |
1594 | } | |
1595 | ||
1596 | p+=l; | |
1597 | nc+=l+2; | |
1598 | } | |
1599 | ||
1600 | if (0) | |
1601 | { | |
1602 | cont: | |
1603 | ERR_clear_error(); | |
1604 | } | |
1605 | ||
657e60fa | 1606 | /* we should setup a certificate to return.... */ |
d02b48c6 RE |
1607 | s->s3->tmp.cert_req=1; |
1608 | s->s3->tmp.ctype_num=ctype_num; | |
1609 | if (s->s3->tmp.ca_names != NULL) | |
f73e07cf | 1610 | sk_X509_NAME_pop_free(s->s3->tmp.ca_names,X509_NAME_free); |
d02b48c6 RE |
1611 | s->s3->tmp.ca_names=ca_sk; |
1612 | ca_sk=NULL; | |
1613 | ||
1614 | ret=1; | |
1615 | err: | |
f73e07cf | 1616 | if (ca_sk != NULL) sk_X509_NAME_pop_free(ca_sk,X509_NAME_free); |
d02b48c6 RE |
1617 | return(ret); |
1618 | } | |
1619 | ||
ccd86b68 | 1620 | static int ca_dn_cmp(const X509_NAME * const *a, const X509_NAME * const *b) |
d02b48c6 RE |
1621 | { |
1622 | return(X509_NAME_cmp(*a,*b)); | |
1623 | } | |
1624 | ||
36d16f8e | 1625 | int ssl3_get_server_done(SSL *s) |
d02b48c6 RE |
1626 | { |
1627 | int ok,ret=0; | |
1628 | long n; | |
1629 | ||
36d16f8e | 1630 | n=s->method->ssl_get_message(s, |
d02b48c6 RE |
1631 | SSL3_ST_CR_SRVR_DONE_A, |
1632 | SSL3_ST_CR_SRVR_DONE_B, | |
1633 | SSL3_MT_SERVER_DONE, | |
1634 | 30, /* should be very small, like 0 :-) */ | |
1635 | &ok); | |
1636 | ||
1637 | if (!ok) return((int)n); | |
1638 | if (n > 0) | |
1639 | { | |
1640 | /* should contain no data */ | |
58964a49 | 1641 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECODE_ERROR); |
d02b48c6 | 1642 | SSLerr(SSL_F_SSL3_GET_SERVER_DONE,SSL_R_LENGTH_MISMATCH); |
c59ba5b5 | 1643 | return -1; |
d02b48c6 RE |
1644 | } |
1645 | ret=1; | |
1646 | return(ret); | |
1647 | } | |
1648 | ||
176f31dd | 1649 | |
36d16f8e | 1650 | int ssl3_send_client_key_exchange(SSL *s) |
d02b48c6 | 1651 | { |
79df9d62 | 1652 | unsigned char *p,*d; |
d02b48c6 RE |
1653 | int n; |
1654 | unsigned long l; | |
bc36ee62 | 1655 | #ifndef OPENSSL_NO_RSA |
79df9d62 | 1656 | unsigned char *q; |
d02b48c6 | 1657 | EVP_PKEY *pkey=NULL; |
79df9d62 | 1658 | #endif |
bc36ee62 | 1659 | #ifndef OPENSSL_NO_KRB5 |
57376542 | 1660 | KSSL_ERR kssl_err; |
bc36ee62 | 1661 | #endif /* OPENSSL_NO_KRB5 */ |
ea262260 BM |
1662 | #ifndef OPENSSL_NO_ECDH |
1663 | EC_KEY *clnt_ecdh = NULL; | |
9dd84053 | 1664 | const EC_POINT *srvr_ecpoint = NULL; |
ea262260 BM |
1665 | EVP_PKEY *srvr_pub_pkey = NULL; |
1666 | unsigned char *encodedPoint = NULL; | |
1667 | int encoded_pt_len = 0; | |
1668 | BN_CTX * bn_ctx = NULL; | |
1669 | #endif | |
d02b48c6 RE |
1670 | |
1671 | if (s->state == SSL3_ST_CW_KEY_EXCH_A) | |
1672 | { | |
1673 | d=(unsigned char *)s->init_buf->data; | |
1674 | p= &(d[4]); | |
1675 | ||
1676 | l=s->s3->tmp.new_cipher->algorithms; | |
1677 | ||
57376542 BM |
1678 | /* Fool emacs indentation */ |
1679 | if (0) {} | |
bc36ee62 | 1680 | #ifndef OPENSSL_NO_RSA |
f9b3bff6 | 1681 | else if (l & SSL_kRSA) |
d02b48c6 RE |
1682 | { |
1683 | RSA *rsa; | |
dfeab068 | 1684 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; |
d02b48c6 | 1685 | |
b56bce4f BM |
1686 | if (s->session->sess_cert->peer_rsa_tmp != NULL) |
1687 | rsa=s->session->sess_cert->peer_rsa_tmp; | |
d02b48c6 RE |
1688 | else |
1689 | { | |
b56bce4f | 1690 | pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509); |
d02b48c6 RE |
1691 | if ((pkey == NULL) || |
1692 | (pkey->type != EVP_PKEY_RSA) || | |
1693 | (pkey->pkey.rsa == NULL)) | |
1694 | { | |
5277d7cb | 1695 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
1696 | goto err; |
1697 | } | |
1698 | rsa=pkey->pkey.rsa; | |
50596582 | 1699 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
1700 | } |
1701 | ||
413c4f45 MC |
1702 | tmp_buf[0]=s->client_version>>8; |
1703 | tmp_buf[1]=s->client_version&0xff; | |
54a656ef | 1704 | if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0) |
e7f97e2d | 1705 | goto err; |
d02b48c6 | 1706 | |
54a656ef | 1707 | s->session->master_key_length=sizeof tmp_buf; |
d02b48c6 | 1708 | |
58964a49 RE |
1709 | q=p; |
1710 | /* Fix buf for TLS and beyond */ | |
1711 | if (s->version > SSL3_VERSION) | |
1712 | p+=2; | |
54a656ef | 1713 | n=RSA_public_encrypt(sizeof tmp_buf, |
58964a49 | 1714 | tmp_buf,p,rsa,RSA_PKCS1_PADDING); |
dfeab068 RE |
1715 | #ifdef PKCS1_CHECK |
1716 | if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++; | |
1717 | if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70; | |
1718 | #endif | |
d02b48c6 RE |
1719 | if (n <= 0) |
1720 | { | |
1721 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT); | |
1722 | goto err; | |
1723 | } | |
1724 | ||
58964a49 RE |
1725 | /* Fix buf for TLS and beyond */ |
1726 | if (s->version > SSL3_VERSION) | |
1727 | { | |
1728 | s2n(n,q); | |
1729 | n+=2; | |
1730 | } | |
1731 | ||
d02b48c6 | 1732 | s->session->master_key_length= |
58964a49 | 1733 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 | 1734 | s->session->master_key, |
54a656ef | 1735 | tmp_buf,sizeof tmp_buf); |
4579924b | 1736 | OPENSSL_cleanse(tmp_buf,sizeof tmp_buf); |
d02b48c6 | 1737 | } |
f9b3bff6 | 1738 | #endif |
bc36ee62 | 1739 | #ifndef OPENSSL_NO_KRB5 |
f9b3bff6 | 1740 | else if (l & SSL_kKRB5) |
57376542 BM |
1741 | { |
1742 | krb5_error_code krb5rc; | |
1743 | KSSL_CTX *kssl_ctx = s->kssl_ctx; | |
1744 | /* krb5_data krb5_ap_req; */ | |
1745 | krb5_data *enc_ticket; | |
1746 | krb5_data authenticator, *authp = NULL; | |
2a1ef754 RL |
1747 | EVP_CIPHER_CTX ciph_ctx; |
1748 | EVP_CIPHER *enc = NULL; | |
1749 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
1750 | unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH]; | |
1751 | unsigned char epms[SSL_MAX_MASTER_KEY_LENGTH | |
1752 | + EVP_MAX_IV_LENGTH]; | |
1753 | int padl, outl = sizeof(epms); | |
f9b3bff6 | 1754 | |
de941e28 DSH |
1755 | EVP_CIPHER_CTX_init(&ciph_ctx); |
1756 | ||
f9b3bff6 | 1757 | #ifdef KSSL_DEBUG |
57376542 BM |
1758 | printf("ssl3_send_client_key_exchange(%lx & %lx)\n", |
1759 | l, SSL_kKRB5); | |
f9b3bff6 RL |
1760 | #endif /* KSSL_DEBUG */ |
1761 | ||
2a1ef754 RL |
1762 | authp = NULL; |
1763 | #ifdef KRB5SENDAUTH | |
1764 | if (KRB5SENDAUTH) authp = &authenticator; | |
1765 | #endif /* KRB5SENDAUTH */ | |
1766 | ||
57376542 | 1767 | krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp, |
2a1ef754 RL |
1768 | &kssl_err); |
1769 | enc = kssl_map_enc(kssl_ctx->enctype); | |
57376542 BM |
1770 | if (enc == NULL) |
1771 | goto err; | |
f9b3bff6 | 1772 | #ifdef KSSL_DEBUG |
57376542 BM |
1773 | { |
1774 | printf("kssl_cget_tkt rtn %d\n", krb5rc); | |
1775 | if (krb5rc && kssl_err.text) | |
2a1ef754 | 1776 | printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text); |
57376542 | 1777 | } |
f9b3bff6 RL |
1778 | #endif /* KSSL_DEBUG */ |
1779 | ||
57376542 BM |
1780 | if (krb5rc) |
1781 | { | |
1782 | ssl3_send_alert(s,SSL3_AL_FATAL, | |
2a1ef754 | 1783 | SSL_AD_HANDSHAKE_FAILURE); |
57376542 | 1784 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, |
2a1ef754 | 1785 | kssl_err.reason); |
57376542 BM |
1786 | goto err; |
1787 | } | |
f9b3bff6 | 1788 | |
2a1ef754 RL |
1789 | /* 20010406 VRS - Earlier versions used KRB5 AP_REQ |
1790 | ** in place of RFC 2712 KerberosWrapper, as in: | |
1791 | ** | |
57376542 BM |
1792 | ** Send ticket (copy to *p, set n = length) |
1793 | ** n = krb5_ap_req.length; | |
1794 | ** memcpy(p, krb5_ap_req.data, krb5_ap_req.length); | |
1795 | ** if (krb5_ap_req.data) | |
1796 | ** kssl_krb5_free_data_contents(NULL,&krb5_ap_req); | |
1797 | ** | |
2a1ef754 RL |
1798 | ** Now using real RFC 2712 KerberosWrapper |
1799 | ** (Thanks to Simon Wilkinson <sxw@sxw.org.uk>) | |
1800 | ** Note: 2712 "opaque" types are here replaced | |
1801 | ** with a 2-byte length followed by the value. | |
1802 | ** Example: | |
1803 | ** KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms | |
1804 | ** Where "xx xx" = length bytes. Shown here with | |
1805 | ** optional authenticator omitted. | |
1806 | */ | |
1807 | ||
1808 | /* KerberosWrapper.Ticket */ | |
1809 | s2n(enc_ticket->length,p); | |
1810 | memcpy(p, enc_ticket->data, enc_ticket->length); | |
1811 | p+= enc_ticket->length; | |
1812 | n = enc_ticket->length + 2; | |
1813 | ||
1814 | /* KerberosWrapper.Authenticator */ | |
1815 | if (authp && authp->length) | |
1816 | { | |
1817 | s2n(authp->length,p); | |
1818 | memcpy(p, authp->data, authp->length); | |
1819 | p+= authp->length; | |
1820 | n+= authp->length + 2; | |
1821 | ||
1822 | free(authp->data); | |
1823 | authp->data = NULL; | |
1824 | authp->length = 0; | |
1825 | } | |
1826 | else | |
1827 | { | |
1828 | s2n(0,p);/* null authenticator length */ | |
1829 | n+=2; | |
1830 | } | |
1831 | ||
54a656ef | 1832 | if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0) |
2a1ef754 RL |
1833 | goto err; |
1834 | ||
1835 | /* 20010420 VRS. Tried it this way; failed. | |
581f1c84 | 1836 | ** EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL); |
2a1ef754 RL |
1837 | ** EVP_CIPHER_CTX_set_key_length(&ciph_ctx, |
1838 | ** kssl_ctx->length); | |
581f1c84 | 1839 | ** EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv); |
2a1ef754 RL |
1840 | */ |
1841 | ||
54a656ef | 1842 | memset(iv, 0, sizeof iv); /* per RFC 1510 */ |
7beb4087 RL |
1843 | EVP_EncryptInit_ex(&ciph_ctx,enc, NULL, |
1844 | kssl_ctx->key,iv); | |
2a1ef754 | 1845 | EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf, |
54a656ef | 1846 | sizeof tmp_buf); |
581f1c84 | 1847 | EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl); |
2a1ef754 | 1848 | outl += padl; |
5574e0ed BM |
1849 | if (outl > sizeof epms) |
1850 | { | |
1851 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); | |
1852 | goto err; | |
1853 | } | |
2a1ef754 RL |
1854 | EVP_CIPHER_CTX_cleanup(&ciph_ctx); |
1855 | ||
1856 | /* KerberosWrapper.EncryptedPreMasterSecret */ | |
1857 | s2n(outl,p); | |
1858 | memcpy(p, epms, outl); | |
1859 | p+=outl; | |
1860 | n+=outl + 2; | |
1861 | ||
57376542 BM |
1862 | s->session->master_key_length= |
1863 | s->method->ssl3_enc->generate_master_secret(s, | |
2a1ef754 | 1864 | s->session->master_key, |
54a656ef | 1865 | tmp_buf, sizeof tmp_buf); |
2a1ef754 | 1866 | |
4579924b RL |
1867 | OPENSSL_cleanse(tmp_buf, sizeof tmp_buf); |
1868 | OPENSSL_cleanse(epms, outl); | |
57376542 | 1869 | } |
d02b48c6 | 1870 | #endif |
bc36ee62 | 1871 | #ifndef OPENSSL_NO_DH |
f9b3bff6 | 1872 | else if (l & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
d02b48c6 RE |
1873 | { |
1874 | DH *dh_srvr,*dh_clnt; | |
1875 | ||
b56bce4f BM |
1876 | if (s->session->sess_cert->peer_dh_tmp != NULL) |
1877 | dh_srvr=s->session->sess_cert->peer_dh_tmp; | |
d02b48c6 RE |
1878 | else |
1879 | { | |
1880 | /* we get them from the cert */ | |
58964a49 | 1881 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
1882 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS); |
1883 | goto err; | |
1884 | } | |
1885 | ||
1886 | /* generate a new random key */ | |
1887 | if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL) | |
1888 | { | |
1889 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1890 | goto err; | |
1891 | } | |
1892 | if (!DH_generate_key(dh_clnt)) | |
1893 | { | |
1894 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1895 | goto err; | |
1896 | } | |
1897 | ||
1898 | /* use the 'p' output buffer for the DH key, but | |
1899 | * make sure to clear it out afterwards */ | |
58964a49 | 1900 | |
d02b48c6 | 1901 | n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt); |
58964a49 | 1902 | |
d02b48c6 RE |
1903 | if (n <= 0) |
1904 | { | |
1905 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB); | |
1906 | goto err; | |
1907 | } | |
1908 | ||
1909 | /* generate master key from the result */ | |
1910 | s->session->master_key_length= | |
58964a49 | 1911 | s->method->ssl3_enc->generate_master_secret(s, |
d02b48c6 RE |
1912 | s->session->master_key,p,n); |
1913 | /* clean up */ | |
1914 | memset(p,0,n); | |
1915 | ||
1916 | /* send off the data */ | |
1917 | n=BN_num_bytes(dh_clnt->pub_key); | |
1918 | s2n(n,p); | |
1919 | BN_bn2bin(dh_clnt->pub_key,p); | |
1920 | n+=2; | |
1921 | ||
1922 | DH_free(dh_clnt); | |
1923 | ||
1924 | /* perhaps clean things up a bit EAY EAY EAY EAY*/ | |
1925 | } | |
d02b48c6 | 1926 | #endif |
ea262260 BM |
1927 | |
1928 | #ifndef OPENSSL_NO_ECDH | |
1929 | else if ((l & SSL_kECDH) || (l & SSL_kECDHE)) | |
1930 | { | |
9dd84053 NL |
1931 | const EC_GROUP *srvr_group = NULL; |
1932 | EC_KEY *tkey; | |
ea262260 | 1933 | int ecdh_clnt_cert = 0; |
968766ca | 1934 | int field_size = 0; |
ea262260 BM |
1935 | |
1936 | /* Did we send out the client's | |
1937 | * ECDH share for use in premaster | |
1938 | * computation as part of client certificate? | |
1939 | * If so, set ecdh_clnt_cert to 1. | |
1940 | */ | |
1941 | if ((l & SSL_kECDH) && (s->cert != NULL)) | |
1942 | { | |
1943 | /* XXX: For now, we do not support client | |
1944 | * authentication using ECDH certificates. | |
1945 | * To add such support, one needs to add | |
1946 | * code that checks for appropriate | |
1947 | * conditions and sets ecdh_clnt_cert to 1. | |
1948 | * For example, the cert have an ECC | |
1949 | * key on the same curve as the server's | |
1950 | * and the key should be authorized for | |
1951 | * key agreement. | |
1952 | * | |
1953 | * One also needs to add code in ssl3_connect | |
1954 | * to skip sending the certificate verify | |
1955 | * message. | |
1956 | * | |
1957 | * if ((s->cert->key->privatekey != NULL) && | |
1958 | * (s->cert->key->privatekey->type == | |
0c7141a3 | 1959 | * EVP_PKEY_EC) && ...) |
ea262260 BM |
1960 | * ecdh_clnt_cert = 1; |
1961 | */ | |
1962 | } | |
1963 | ||
1964 | if (s->session->sess_cert->peer_ecdh_tmp != NULL) | |
1965 | { | |
9dd84053 | 1966 | tkey = s->session->sess_cert->peer_ecdh_tmp; |
ea262260 BM |
1967 | } |
1968 | else | |
1969 | { | |
1970 | /* Get the Server Public Key from Cert */ | |
1971 | srvr_pub_pkey = X509_get_pubkey(s->session-> \ | |
1972 | sess_cert->peer_pkeys[SSL_PKEY_ECC].x509); | |
1973 | if ((srvr_pub_pkey == NULL) || | |
5488bb61 | 1974 | (srvr_pub_pkey->type != EVP_PKEY_EC) || |
9dd84053 | 1975 | (srvr_pub_pkey->pkey.ec == NULL)) |
ea262260 BM |
1976 | { |
1977 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1978 | ERR_R_INTERNAL_ERROR); | |
1979 | goto err; | |
1980 | } | |
1981 | ||
9dd84053 | 1982 | tkey = srvr_pub_pkey->pkey.ec; |
ea262260 BM |
1983 | } |
1984 | ||
9dd84053 NL |
1985 | srvr_group = EC_KEY_get0_group(tkey); |
1986 | srvr_ecpoint = EC_KEY_get0_public_key(tkey); | |
1987 | ||
ea262260 BM |
1988 | if ((srvr_group == NULL) || (srvr_ecpoint == NULL)) |
1989 | { | |
1990 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
1991 | ERR_R_INTERNAL_ERROR); | |
1992 | goto err; | |
1993 | } | |
1994 | ||
1995 | if ((clnt_ecdh=EC_KEY_new()) == NULL) | |
1996 | { | |
1997 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
1998 | goto err; | |
1999 | } | |
2000 | ||
9dd84053 NL |
2001 | if (!EC_KEY_set_group(clnt_ecdh, srvr_group)) |
2002 | { | |
2003 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2004 | goto err; | |
2005 | } | |
ea262260 BM |
2006 | if (ecdh_clnt_cert) |
2007 | { | |
57376542 | 2008 | /* Reuse key info from our certificate |
ea262260 BM |
2009 | * We only need our private key to perform |
2010 | * the ECDH computation. | |
2011 | */ | |
9dd84053 NL |
2012 | const BIGNUM *priv_key; |
2013 | tkey = s->cert->key->privatekey->pkey.ec; | |
2014 | priv_key = EC_KEY_get0_private_key(tkey); | |
2015 | if (priv_key == NULL) | |
2016 | { | |
2017 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2018 | goto err; | |
2019 | } | |
2020 | if (!EC_KEY_set_private_key(clnt_ecdh, priv_key)) | |
2021 | { | |
2022 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB); | |
2023 | goto err; | |
2024 | } | |
ea262260 BM |
2025 | } |
2026 | else | |
2027 | { | |
2028 | /* Generate a new ECDH key pair */ | |
2029 | if (!(EC_KEY_generate_key(clnt_ecdh))) | |
2030 | { | |
2031 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB); | |
2032 | goto err; | |
2033 | } | |
2034 | } | |
2035 | ||
57376542 BM |
2036 | /* use the 'p' output buffer for the ECDH key, but |
2037 | * make sure to clear it out afterwards | |
ea262260 BM |
2038 | */ |
2039 | ||
9dd84053 | 2040 | field_size = EC_GROUP_get_degree(srvr_group); |
968766ca BM |
2041 | if (field_size <= 0) |
2042 | { | |
2043 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2044 | ERR_R_ECDH_LIB); | |
2045 | goto err; | |
2046 | } | |
d56349a2 | 2047 | n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL); |
ea262260 | 2048 | if (n <= 0) |
57376542 BM |
2049 | { |
2050 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
ea262260 | 2051 | ERR_R_ECDH_LIB); |
57376542 | 2052 | goto err; |
ea262260 BM |
2053 | } |
2054 | ||
57376542 BM |
2055 | /* generate master key from the result */ |
2056 | s->session->master_key_length = s->method->ssl3_enc \ | |
ea262260 BM |
2057 | -> generate_master_secret(s, |
2058 | s->session->master_key, | |
2059 | p, n); | |
2060 | ||
57376542 | 2061 | memset(p, 0, n); /* clean up */ |
ea262260 BM |
2062 | |
2063 | if (ecdh_clnt_cert) | |
2064 | { | |
2065 | /* Send empty client key exch message */ | |
2066 | n = 0; | |
2067 | } | |
2068 | else | |
2069 | { | |
2070 | /* First check the size of encoding and | |
2071 | * allocate memory accordingly. | |
2072 | */ | |
2073 | encoded_pt_len = | |
9dd84053 NL |
2074 | EC_POINT_point2oct(srvr_group, |
2075 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2076 | POINT_CONVERSION_UNCOMPRESSED, |
2077 | NULL, 0, NULL); | |
2078 | ||
2079 | encodedPoint = (unsigned char *) | |
2080 | OPENSSL_malloc(encoded_pt_len * | |
2081 | sizeof(unsigned char)); | |
2082 | bn_ctx = BN_CTX_new(); | |
2083 | if ((encodedPoint == NULL) || | |
2084 | (bn_ctx == NULL)) | |
2085 | { | |
2086 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE); | |
2087 | goto err; | |
2088 | } | |
2089 | ||
2090 | /* Encode the public key */ | |
9dd84053 NL |
2091 | n = EC_POINT_point2oct(srvr_group, |
2092 | EC_KEY_get0_public_key(clnt_ecdh), | |
ea262260 BM |
2093 | POINT_CONVERSION_UNCOMPRESSED, |
2094 | encodedPoint, encoded_pt_len, bn_ctx); | |
2095 | ||
2096 | *p = n; /* length of encoded point */ | |
57376542 | 2097 | /* Encoded point will be copied here */ |
ea262260 BM |
2098 | p += 1; |
2099 | /* copy the point */ | |
2100 | memcpy((unsigned char *)p, encodedPoint, n); | |
2101 | /* increment n to account for length field */ | |
2102 | n += 1; | |
2103 | } | |
2104 | ||
2105 | /* Free allocated memory */ | |
2106 | BN_CTX_free(bn_ctx); | |
2107 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2108 | if (clnt_ecdh != NULL) | |
ea262260 | 2109 | EC_KEY_free(clnt_ecdh); |
ea262260 BM |
2110 | EVP_PKEY_free(srvr_pub_pkey); |
2111 | } | |
2112 | #endif /* !OPENSSL_NO_ECDH */ | |
f9b3bff6 | 2113 | else |
d02b48c6 | 2114 | { |
ea262260 BM |
2115 | ssl3_send_alert(s, SSL3_AL_FATAL, |
2116 | SSL_AD_HANDSHAKE_FAILURE); | |
2117 | SSLerr(SSL_F_SSL3_SEND_CLIENT_KEY_EXCHANGE, | |
2118 | ERR_R_INTERNAL_ERROR); | |
d02b48c6 RE |
2119 | goto err; |
2120 | } | |
2121 | ||
2122 | *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE; | |
2123 | l2n3(n,d); | |
2124 | ||
2125 | s->state=SSL3_ST_CW_KEY_EXCH_B; | |
2126 | /* number of bytes to write */ | |
2127 | s->init_num=n+4; | |
2128 | s->init_off=0; | |
2129 | } | |
2130 | ||
2131 | /* SSL3_ST_CW_KEY_EXCH_B */ | |
2132 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2133 | err: | |
ea262260 BM |
2134 | #ifndef OPENSSL_NO_ECDH |
2135 | BN_CTX_free(bn_ctx); | |
2136 | if (encodedPoint != NULL) OPENSSL_free(encodedPoint); | |
2137 | if (clnt_ecdh != NULL) | |
ea262260 | 2138 | EC_KEY_free(clnt_ecdh); |
57376542 | 2139 | EVP_PKEY_free(srvr_pub_pkey); |
ea262260 | 2140 | #endif |
d02b48c6 RE |
2141 | return(-1); |
2142 | } | |
2143 | ||
36d16f8e | 2144 | int ssl3_send_client_verify(SSL *s) |
d02b48c6 RE |
2145 | { |
2146 | unsigned char *p,*d; | |
2147 | unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH]; | |
2148 | EVP_PKEY *pkey; | |
bc36ee62 | 2149 | #ifndef OPENSSL_NO_RSA |
ca7fea96 | 2150 | unsigned u=0; |
79df9d62 | 2151 | #endif |
d02b48c6 | 2152 | unsigned long n; |
3eeaab4b | 2153 | #if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA) |
58964a49 RE |
2154 | int j; |
2155 | #endif | |
d02b48c6 RE |
2156 | |
2157 | if (s->state == SSL3_ST_CW_CERT_VRFY_A) | |
2158 | { | |
2159 | d=(unsigned char *)s->init_buf->data; | |
2160 | p= &(d[4]); | |
2161 | pkey=s->cert->key->privatekey; | |
2162 | ||
58964a49 RE |
2163 | s->method->ssl3_enc->cert_verify_mac(s,&(s->s3->finish_dgst2), |
2164 | &(data[MD5_DIGEST_LENGTH])); | |
d02b48c6 | 2165 | |
bc36ee62 | 2166 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2167 | if (pkey->type == EVP_PKEY_RSA) |
2168 | { | |
58964a49 RE |
2169 | s->method->ssl3_enc->cert_verify_mac(s, |
2170 | &(s->s3->finish_dgst1),&(data[0])); | |
1c80019a DSH |
2171 | if (RSA_sign(NID_md5_sha1, data, |
2172 | MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH, | |
ca7fea96 | 2173 | &(p[2]), &u, pkey->pkey.rsa) <= 0 ) |
d02b48c6 RE |
2174 | { |
2175 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB); | |
2176 | goto err; | |
2177 | } | |
ca7fea96 BL |
2178 | s2n(u,p); |
2179 | n=u+2; | |
d02b48c6 RE |
2180 | } |
2181 | else | |
2182 | #endif | |
bc36ee62 | 2183 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2184 | if (pkey->type == EVP_PKEY_DSA) |
2185 | { | |
2186 | if (!DSA_sign(pkey->save_type, | |
2187 | &(data[MD5_DIGEST_LENGTH]), | |
2188 | SHA_DIGEST_LENGTH,&(p[2]), | |
2189 | (unsigned int *)&j,pkey->pkey.dsa)) | |
2190 | { | |
2191 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB); | |
2192 | goto err; | |
2193 | } | |
2194 | s2n(j,p); | |
2195 | n=j+2; | |
2196 | } | |
2197 | else | |
ea262260 BM |
2198 | #endif |
2199 | #ifndef OPENSSL_NO_ECDSA | |
5488bb61 | 2200 | if (pkey->type == EVP_PKEY_EC) |
ea262260 BM |
2201 | { |
2202 | if (!ECDSA_sign(pkey->save_type, | |
2203 | &(data[MD5_DIGEST_LENGTH]), | |
2204 | SHA_DIGEST_LENGTH,&(p[2]), | |
9dd84053 | 2205 | (unsigned int *)&j,pkey->pkey.ec)) |
ea262260 BM |
2206 | { |
2207 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY, | |
2208 | ERR_R_ECDSA_LIB); | |
2209 | goto err; | |
2210 | } | |
2211 | s2n(j,p); | |
2212 | n=j+2; | |
2213 | } | |
2214 | else | |
d02b48c6 RE |
2215 | #endif |
2216 | { | |
5277d7cb | 2217 | SSLerr(SSL_F_SSL3_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2218 | goto err; |
2219 | } | |
2220 | *(d++)=SSL3_MT_CERTIFICATE_VERIFY; | |
2221 | l2n3(n,d); | |
2222 | ||
ba9f80c5 | 2223 | s->state=SSL3_ST_CW_CERT_VRFY_B; |
d02b48c6 RE |
2224 | s->init_num=(int)n+4; |
2225 | s->init_off=0; | |
2226 | } | |
2227 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2228 | err: | |
2229 | return(-1); | |
2230 | } | |
2231 | ||
36d16f8e | 2232 | int ssl3_send_client_certificate(SSL *s) |
d02b48c6 RE |
2233 | { |
2234 | X509 *x509=NULL; | |
2235 | EVP_PKEY *pkey=NULL; | |
2236 | int i; | |
2237 | unsigned long l; | |
2238 | ||
2239 | if (s->state == SSL3_ST_CW_CERT_A) | |
2240 | { | |
2241 | if ((s->cert == NULL) || | |
2242 | (s->cert->key->x509 == NULL) || | |
2243 | (s->cert->key->privatekey == NULL)) | |
2244 | s->state=SSL3_ST_CW_CERT_B; | |
2245 | else | |
2246 | s->state=SSL3_ST_CW_CERT_C; | |
2247 | } | |
2248 | ||
2249 | /* We need to get a client cert */ | |
2250 | if (s->state == SSL3_ST_CW_CERT_B) | |
2251 | { | |
2252 | /* If we get an error, we need to | |
2253 | * ssl->rwstate=SSL_X509_LOOKUP; return(-1); | |
2254 | * We then get retied later */ | |
2255 | i=0; | |
2256 | if (s->ctx->client_cert_cb != NULL) | |
2257 | i=s->ctx->client_cert_cb(s,&(x509),&(pkey)); | |
2258 | if (i < 0) | |
2259 | { | |
2260 | s->rwstate=SSL_X509_LOOKUP; | |
2261 | return(-1); | |
2262 | } | |
2263 | s->rwstate=SSL_NOTHING; | |
2264 | if ((i == 1) && (pkey != NULL) && (x509 != NULL)) | |
2265 | { | |
2266 | s->state=SSL3_ST_CW_CERT_B; | |
2267 | if ( !SSL_use_certificate(s,x509) || | |
2268 | !SSL_use_PrivateKey(s,pkey)) | |
2269 | i=0; | |
2270 | } | |
2271 | else if (i == 1) | |
2272 | { | |
2273 | i=0; | |
2274 | SSLerr(SSL_F_SSL3_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK); | |
2275 | } | |
2276 | ||
2277 | if (x509 != NULL) X509_free(x509); | |
2278 | if (pkey != NULL) EVP_PKEY_free(pkey); | |
2279 | if (i == 0) | |
2280 | { | |
58964a49 RE |
2281 | if (s->version == SSL3_VERSION) |
2282 | { | |
2283 | s->s3->tmp.cert_req=0; | |
2284 | ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE); | |
2285 | return(1); | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | s->s3->tmp.cert_req=2; | |
2290 | } | |
d02b48c6 RE |
2291 | } |
2292 | ||
2293 | /* Ok, we have a cert */ | |
2294 | s->state=SSL3_ST_CW_CERT_C; | |
2295 | } | |
2296 | ||
2297 | if (s->state == SSL3_ST_CW_CERT_C) | |
2298 | { | |
2299 | s->state=SSL3_ST_CW_CERT_D; | |
58964a49 RE |
2300 | l=ssl3_output_cert_chain(s, |
2301 | (s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509); | |
d02b48c6 RE |
2302 | s->init_num=(int)l; |
2303 | s->init_off=0; | |
2304 | } | |
2305 | /* SSL3_ST_CW_CERT_D */ | |
2306 | return(ssl3_do_write(s,SSL3_RT_HANDSHAKE)); | |
2307 | } | |
2308 | ||
2309 | #define has_bits(i,m) (((i)&(m)) == (m)) | |
2310 | ||
36d16f8e | 2311 | int ssl3_check_cert_and_algorithm(SSL *s) |
d02b48c6 RE |
2312 | { |
2313 | int i,idx; | |
2314 | long algs; | |
2315 | EVP_PKEY *pkey=NULL; | |
b56bce4f | 2316 | SESS_CERT *sc; |
bc36ee62 | 2317 | #ifndef OPENSSL_NO_RSA |
d02b48c6 | 2318 | RSA *rsa; |
79df9d62 | 2319 | #endif |
bc36ee62 | 2320 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2321 | DH *dh; |
79df9d62 | 2322 | #endif |
d02b48c6 | 2323 | |
b56bce4f | 2324 | sc=s->session->sess_cert; |
d02b48c6 | 2325 | |
b56bce4f | 2326 | if (sc == NULL) |
d02b48c6 | 2327 | { |
5277d7cb | 2328 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,ERR_R_INTERNAL_ERROR); |
d02b48c6 RE |
2329 | goto err; |
2330 | } | |
2331 | ||
2332 | algs=s->s3->tmp.new_cipher->algorithms; | |
2333 | ||
2334 | /* we don't have a certificate */ | |
f9b3bff6 | 2335 | if (algs & (SSL_aDH|SSL_aNULL|SSL_aKRB5)) |
d02b48c6 RE |
2336 | return(1); |
2337 | ||
bc36ee62 | 2338 | #ifndef OPENSSL_NO_RSA |
b56bce4f | 2339 | rsa=s->session->sess_cert->peer_rsa_tmp; |
79df9d62 | 2340 | #endif |
bc36ee62 | 2341 | #ifndef OPENSSL_NO_DH |
b56bce4f | 2342 | dh=s->session->sess_cert->peer_dh_tmp; |
79df9d62 | 2343 | #endif |
d02b48c6 RE |
2344 | |
2345 | /* This is the passed certificate */ | |
2346 | ||
b56bce4f | 2347 | idx=sc->peer_cert_type; |
ea262260 BM |
2348 | #ifndef OPENSSL_NO_ECDH |
2349 | if (idx == SSL_PKEY_ECC) | |
2350 | { | |
2351 | if (check_srvr_ecc_cert_and_alg(sc->peer_pkeys[idx].x509, | |
2352 | s->s3->tmp.new_cipher) == 0) | |
2353 | { /* check failed */ | |
2354 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_BAD_ECC_CERT); | |
2355 | goto f_err; | |
2356 | } | |
2357 | else | |
2358 | { | |
2359 | return 1; | |
2360 | } | |
2361 | } | |
2362 | #endif | |
b56bce4f BM |
2363 | pkey=X509_get_pubkey(sc->peer_pkeys[idx].x509); |
2364 | i=X509_certificate_type(sc->peer_pkeys[idx].x509,pkey); | |
a8236c8c | 2365 | EVP_PKEY_free(pkey); |
d02b48c6 RE |
2366 | |
2367 | ||
2368 | /* Check that we have a certificate if we require one */ | |
2369 | if ((algs & SSL_aRSA) && !has_bits(i,EVP_PK_RSA|EVP_PKT_SIGN)) | |
2370 | { | |
2371 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_SIGNING_CERT); | |
2372 | goto f_err; | |
2373 | } | |
bc36ee62 | 2374 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2375 | else if ((algs & SSL_aDSS) && !has_bits(i,EVP_PK_DSA|EVP_PKT_SIGN)) |
2376 | { | |
2377 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DSA_SIGNING_CERT); | |
2378 | goto f_err; | |
2379 | } | |
2380 | #endif | |
bc36ee62 | 2381 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2382 | if ((algs & SSL_kRSA) && |
2383 | !(has_bits(i,EVP_PK_RSA|EVP_PKT_ENC) || (rsa != NULL))) | |
2384 | { | |
2385 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_RSA_ENCRYPTING_CERT); | |
2386 | goto f_err; | |
2387 | } | |
79df9d62 | 2388 | #endif |
bc36ee62 | 2389 | #ifndef OPENSSL_NO_DH |
79df9d62 | 2390 | if ((algs & SSL_kEDH) && |
d02b48c6 RE |
2391 | !(has_bits(i,EVP_PK_DH|EVP_PKT_EXCH) || (dh != NULL))) |
2392 | { | |
2393 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_KEY); | |
2394 | goto f_err; | |
2395 | } | |
2396 | else if ((algs & SSL_kDHr) && !has_bits(i,EVP_PK_DH|EVP_PKS_RSA)) | |
2397 | { | |
2398 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_RSA_CERT); | |
2399 | goto f_err; | |
2400 | } | |
bc36ee62 | 2401 | #ifndef OPENSSL_NO_DSA |
d02b48c6 RE |
2402 | else if ((algs & SSL_kDHd) && !has_bits(i,EVP_PK_DH|EVP_PKS_DSA)) |
2403 | { | |
2404 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_DH_DSA_CERT); | |
2405 | goto f_err; | |
2406 | } | |
2407 | #endif | |
2408 | #endif | |
2409 | ||
018e57c7 | 2410 | if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) && !has_bits(i,EVP_PKT_EXP)) |
d02b48c6 | 2411 | { |
bc36ee62 | 2412 | #ifndef OPENSSL_NO_RSA |
d02b48c6 RE |
2413 | if (algs & SSL_kRSA) |
2414 | { | |
06ab81f9 | 2415 | if (rsa == NULL |
70ef9c5a | 2416 | || RSA_size(rsa)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2417 | { |
2418 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_RSA_KEY); | |
2419 | goto f_err; | |
2420 | } | |
2421 | } | |
2422 | else | |
2423 | #endif | |
bc36ee62 | 2424 | #ifndef OPENSSL_NO_DH |
d02b48c6 | 2425 | if (algs & (SSL_kEDH|SSL_kDHr|SSL_kDHd)) |
06ab81f9 BL |
2426 | { |
2427 | if (dh == NULL | |
70ef9c5a | 2428 | || DH_size(dh)*8 > SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher)) |
d02b48c6 RE |
2429 | { |
2430 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_MISSING_EXPORT_TMP_DH_KEY); | |
2431 | goto f_err; | |
2432 | } | |
2433 | } | |
2434 | else | |
2435 | #endif | |
2436 | { | |
2437 | SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE); | |
2438 | goto f_err; | |
2439 | } | |
2440 | } | |
2441 | return(1); | |
2442 | f_err: | |
58964a49 | 2443 | ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); |
d02b48c6 RE |
2444 | err: |
2445 | return(0); | |
2446 | } | |
2447 | ||
ea262260 BM |
2448 | |
2449 | #ifndef OPENSSL_NO_ECDH | |
2450 | /* This is the complement of nid2curve_id in s3_srvr.c. */ | |
2451 | static int curve_id2nid(int curve_id) | |
2452 | { | |
968766ca BM |
2453 | /* ECC curves from draft-ietf-tls-ecc-01.txt (Mar 15, 2001) |
2454 | * (no changes in draft-ietf-tls-ecc-03.txt [June 2003]) */ | |
ea262260 BM |
2455 | static int nid_list[26] = |
2456 | { | |
2457 | 0, | |
2458 | NID_sect163k1, /* sect163k1 (1) */ | |
2459 | NID_sect163r1, /* sect163r1 (2) */ | |
2460 | NID_sect163r2, /* sect163r2 (3) */ | |
2461 | NID_sect193r1, /* sect193r1 (4) */ | |
2462 | NID_sect193r2, /* sect193r2 (5) */ | |
2463 | NID_sect233k1, /* sect233k1 (6) */ | |
2464 | NID_sect233r1, /* sect233r1 (7) */ | |
2465 | NID_sect239k1, /* sect239k1 (8) */ | |
2466 | NID_sect283k1, /* sect283k1 (9) */ | |
2467 | NID_sect283r1, /* sect283r1 (10) */ | |
2468 | NID_sect409k1, /* sect409k1 (11) */ | |
2469 | NID_sect409r1, /* sect409r1 (12) */ | |
2470 | NID_sect571k1, /* sect571k1 (13) */ | |
2471 | NID_sect571r1, /* sect571r1 (14) */ | |
2472 | NID_secp160k1, /* secp160k1 (15) */ | |
2473 | NID_secp160r1, /* secp160r1 (16) */ | |
2474 | NID_secp160r2, /* secp160r2 (17) */ | |
2475 | NID_secp192k1, /* secp192k1 (18) */ | |
2476 | NID_X9_62_prime192v1, /* secp192r1 (19) */ | |
2477 | NID_secp224k1, /* secp224k1 (20) */ | |
2478 | NID_secp224r1, /* secp224r1 (21) */ | |
2479 | NID_secp256k1, /* secp256k1 (22) */ | |
2480 | NID_X9_62_prime256v1, /* secp256r1 (23) */ | |
2481 | NID_secp384r1, /* secp384r1 (24) */ | |
2482 | NID_secp521r1 /* secp521r1 (25) */ | |
2483 | }; | |
2484 | ||
2485 | if ((curve_id < 1) || (curve_id > 25)) return 0; | |
2486 | ||
2487 | return nid_list[curve_id]; | |
2488 | } | |
2489 | #endif |