xref: /openbsd-src/lib/libssl/ssl3.h (revision 5054e3e78af0749a9bb00ba9a024b3ee2d90290f)
1 /* ssl/ssl3.h */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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  */
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  */
111 /* ====================================================================
112  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113  * ECC cipher suite support in OpenSSL originally developed by
114  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115  */
116 
117 #ifndef HEADER_SSL3_H
118 #define HEADER_SSL3_H
119 
120 #ifndef OPENSSL_NO_COMP
121 #include <openssl/comp.h>
122 #endif
123 #include <openssl/buffer.h>
124 #include <openssl/evp.h>
125 #include <openssl/ssl.h>
126 #include <openssl/pq_compat.h>
127 
128 #ifdef  __cplusplus
129 extern "C" {
130 #endif
131 
132 #define SSL3_CK_RSA_NULL_MD5			0x03000001
133 #define SSL3_CK_RSA_NULL_SHA			0x03000002
134 #define SSL3_CK_RSA_RC4_40_MD5 			0x03000003
135 #define SSL3_CK_RSA_RC4_128_MD5			0x03000004
136 #define SSL3_CK_RSA_RC4_128_SHA			0x03000005
137 #define SSL3_CK_RSA_RC2_40_MD5			0x03000006
138 #define SSL3_CK_RSA_IDEA_128_SHA		0x03000007
139 #define SSL3_CK_RSA_DES_40_CBC_SHA		0x03000008
140 #define SSL3_CK_RSA_DES_64_CBC_SHA		0x03000009
141 #define SSL3_CK_RSA_DES_192_CBC3_SHA		0x0300000A
142 
143 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA		0x0300000B
144 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA		0x0300000C
145 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 	0x0300000D
146 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA		0x0300000E
147 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA		0x0300000F
148 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 	0x03000010
149 
150 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA		0x03000011
151 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA		0x03000012
152 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA	0x03000013
153 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA		0x03000014
154 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA		0x03000015
155 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA	0x03000016
156 
157 #define SSL3_CK_ADH_RC4_40_MD5			0x03000017
158 #define SSL3_CK_ADH_RC4_128_MD5			0x03000018
159 #define SSL3_CK_ADH_DES_40_CBC_SHA		0x03000019
160 #define SSL3_CK_ADH_DES_64_CBC_SHA		0x0300001A
161 #define SSL3_CK_ADH_DES_192_CBC_SHA		0x0300001B
162 
163 #define SSL3_CK_FZA_DMS_NULL_SHA		0x0300001C
164 #define SSL3_CK_FZA_DMS_FZA_SHA			0x0300001D
165 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
166 	 to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
167 	 of the ietf-tls list */
168 #define SSL3_CK_FZA_DMS_RC4_SHA			0x0300001E
169 #endif
170 
171 /*    VRS Additional Kerberos5 entries
172  */
173 #define SSL3_CK_KRB5_DES_64_CBC_SHA		0x0300001E
174 #define SSL3_CK_KRB5_DES_192_CBC3_SHA		0x0300001F
175 #define SSL3_CK_KRB5_RC4_128_SHA		0x03000020
176 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA	       	0x03000021
177 #define SSL3_CK_KRB5_DES_64_CBC_MD5       	0x03000022
178 #define SSL3_CK_KRB5_DES_192_CBC3_MD5       	0x03000023
179 #define SSL3_CK_KRB5_RC4_128_MD5	       	0x03000024
180 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 		0x03000025
181 
182 #define SSL3_CK_KRB5_DES_40_CBC_SHA 		0x03000026
183 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 		0x03000027
184 #define SSL3_CK_KRB5_RC4_40_SHA	 		0x03000028
185 #define SSL3_CK_KRB5_DES_40_CBC_MD5 		0x03000029
186 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 		0x0300002A
187 #define SSL3_CK_KRB5_RC4_40_MD5	 		0x0300002B
188 
189 #define SSL3_TXT_RSA_NULL_MD5			"NULL-MD5"
190 #define SSL3_TXT_RSA_NULL_SHA			"NULL-SHA"
191 #define SSL3_TXT_RSA_RC4_40_MD5 		"EXP-RC4-MD5"
192 #define SSL3_TXT_RSA_RC4_128_MD5		"RC4-MD5"
193 #define SSL3_TXT_RSA_RC4_128_SHA		"RC4-SHA"
194 #define SSL3_TXT_RSA_RC2_40_MD5			"EXP-RC2-CBC-MD5"
195 #define SSL3_TXT_RSA_IDEA_128_SHA		"IDEA-CBC-SHA"
196 #define SSL3_TXT_RSA_DES_40_CBC_SHA		"EXP-DES-CBC-SHA"
197 #define SSL3_TXT_RSA_DES_64_CBC_SHA		"DES-CBC-SHA"
198 #define SSL3_TXT_RSA_DES_192_CBC3_SHA		"DES-CBC3-SHA"
199 
200 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA		"EXP-DH-DSS-DES-CBC-SHA"
201 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA		"DH-DSS-DES-CBC-SHA"
202 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA 	"DH-DSS-DES-CBC3-SHA"
203 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA		"EXP-DH-RSA-DES-CBC-SHA"
204 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA		"DH-RSA-DES-CBC-SHA"
205 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA 	"DH-RSA-DES-CBC3-SHA"
206 
207 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA		"EXP-EDH-DSS-DES-CBC-SHA"
208 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA		"EDH-DSS-DES-CBC-SHA"
209 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA	"EDH-DSS-DES-CBC3-SHA"
210 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA		"EXP-EDH-RSA-DES-CBC-SHA"
211 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA		"EDH-RSA-DES-CBC-SHA"
212 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA	"EDH-RSA-DES-CBC3-SHA"
213 
214 #define SSL3_TXT_ADH_RC4_40_MD5			"EXP-ADH-RC4-MD5"
215 #define SSL3_TXT_ADH_RC4_128_MD5		"ADH-RC4-MD5"
216 #define SSL3_TXT_ADH_DES_40_CBC_SHA		"EXP-ADH-DES-CBC-SHA"
217 #define SSL3_TXT_ADH_DES_64_CBC_SHA		"ADH-DES-CBC-SHA"
218 #define SSL3_TXT_ADH_DES_192_CBC_SHA		"ADH-DES-CBC3-SHA"
219 
220 #define SSL3_TXT_FZA_DMS_NULL_SHA		"FZA-NULL-SHA"
221 #define SSL3_TXT_FZA_DMS_FZA_SHA		"FZA-FZA-CBC-SHA"
222 #define SSL3_TXT_FZA_DMS_RC4_SHA		"FZA-RC4-SHA"
223 
224 #define SSL3_TXT_KRB5_DES_64_CBC_SHA		"KRB5-DES-CBC-SHA"
225 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA		"KRB5-DES-CBC3-SHA"
226 #define SSL3_TXT_KRB5_RC4_128_SHA		"KRB5-RC4-SHA"
227 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA	       	"KRB5-IDEA-CBC-SHA"
228 #define SSL3_TXT_KRB5_DES_64_CBC_MD5       	"KRB5-DES-CBC-MD5"
229 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5       	"KRB5-DES-CBC3-MD5"
230 #define SSL3_TXT_KRB5_RC4_128_MD5		"KRB5-RC4-MD5"
231 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 		"KRB5-IDEA-CBC-MD5"
232 
233 #define SSL3_TXT_KRB5_DES_40_CBC_SHA 		"EXP-KRB5-DES-CBC-SHA"
234 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA 		"EXP-KRB5-RC2-CBC-SHA"
235 #define SSL3_TXT_KRB5_RC4_40_SHA	 	"EXP-KRB5-RC4-SHA"
236 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 		"EXP-KRB5-DES-CBC-MD5"
237 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 		"EXP-KRB5-RC2-CBC-MD5"
238 #define SSL3_TXT_KRB5_RC4_40_MD5	 	"EXP-KRB5-RC4-MD5"
239 
240 #define SSL3_SSL_SESSION_ID_LENGTH		32
241 #define SSL3_MAX_SSL_SESSION_ID_LENGTH		32
242 
243 #define SSL3_MASTER_SECRET_SIZE			48
244 #define SSL3_RANDOM_SIZE			32
245 #define SSL3_SESSION_ID_SIZE			32
246 #define SSL3_RT_HEADER_LENGTH			5
247 
248 /* Due to MS stuffing up, this can change.... */
249 #if defined(OPENSSL_SYS_WIN16) || \
250 	(defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32))
251 #define SSL3_RT_MAX_EXTRA			(14000)
252 #else
253 #define SSL3_RT_MAX_EXTRA			(16384)
254 #endif
255 
256 #define SSL3_RT_MAX_PLAIN_LENGTH		16384
257 #ifdef OPENSSL_NO_COMP
258 #define SSL3_RT_MAX_COMPRESSED_LENGTH	SSL3_RT_MAX_PLAIN_LENGTH
259 #else
260 #define SSL3_RT_MAX_COMPRESSED_LENGTH	(1024+SSL3_RT_MAX_PLAIN_LENGTH)
261 #endif
262 #define SSL3_RT_MAX_ENCRYPTED_LENGTH	(1024+SSL3_RT_MAX_COMPRESSED_LENGTH)
263 #define SSL3_RT_MAX_PACKET_SIZE		(SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
264 #define SSL3_RT_MAX_DATA_SIZE			(1024*1024)
265 
266 #define SSL3_MD_CLIENT_FINISHED_CONST	"\x43\x4C\x4E\x54"
267 #define SSL3_MD_SERVER_FINISHED_CONST	"\x53\x52\x56\x52"
268 
269 #define SSL3_VERSION			0x0300
270 #define SSL3_VERSION_MAJOR		0x03
271 #define SSL3_VERSION_MINOR		0x00
272 
273 #define SSL3_RT_CHANGE_CIPHER_SPEC	20
274 #define SSL3_RT_ALERT			21
275 #define SSL3_RT_HANDSHAKE		22
276 #define SSL3_RT_APPLICATION_DATA	23
277 
278 #define SSL3_AL_WARNING			1
279 #define SSL3_AL_FATAL			2
280 
281 #define SSL3_AD_CLOSE_NOTIFY		 0
282 #define SSL3_AD_UNEXPECTED_MESSAGE	10	/* fatal */
283 #define SSL3_AD_BAD_RECORD_MAC		20	/* fatal */
284 #define SSL3_AD_DECOMPRESSION_FAILURE	30	/* fatal */
285 #define SSL3_AD_HANDSHAKE_FAILURE	40	/* fatal */
286 #define SSL3_AD_NO_CERTIFICATE		41
287 #define SSL3_AD_BAD_CERTIFICATE		42
288 #define SSL3_AD_UNSUPPORTED_CERTIFICATE	43
289 #define SSL3_AD_CERTIFICATE_REVOKED	44
290 #define SSL3_AD_CERTIFICATE_EXPIRED	45
291 #define SSL3_AD_CERTIFICATE_UNKNOWN	46
292 #define SSL3_AD_ILLEGAL_PARAMETER	47	/* fatal */
293 
294 typedef struct ssl3_record_st
295 	{
296 /*r */	int type;               /* type of record */
297 /*rw*/	unsigned int length;    /* How many bytes available */
298 /*r */	unsigned int off;       /* read/write offset into 'buf' */
299 /*rw*/	unsigned char *data;    /* pointer to the record data */
300 /*rw*/	unsigned char *input;   /* where the decode bytes are */
301 /*r */	unsigned char *comp;    /* only used with decompression - malloc()ed */
302 /*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
303 /*r */  PQ_64BIT seq_num;       /* sequence number, needed by DTLS1 */
304 	} SSL3_RECORD;
305 
306 typedef struct ssl3_buffer_st
307 	{
308 	unsigned char *buf;     /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
309 	                         * see ssl3_setup_buffers() */
310 	size_t len;             /* buffer size */
311 	int offset;             /* where to 'copy from' */
312 	int left;               /* how many bytes left */
313 	} SSL3_BUFFER;
314 
315 #define SSL3_CT_RSA_SIGN			1
316 #define SSL3_CT_DSS_SIGN			2
317 #define SSL3_CT_RSA_FIXED_DH			3
318 #define SSL3_CT_DSS_FIXED_DH			4
319 #define SSL3_CT_RSA_EPHEMERAL_DH		5
320 #define SSL3_CT_DSS_EPHEMERAL_DH		6
321 #define SSL3_CT_FORTEZZA_DMS			20
322 /* SSL3_CT_NUMBER is used to size arrays and it must be large
323  * enough to contain all of the cert types defined either for
324  * SSLv3 and TLSv1.
325  */
326 #define SSL3_CT_NUMBER			7
327 
328 
329 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS		0x0001
330 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED		0x0002
331 #define SSL3_FLAGS_POP_BUFFER				0x0004
332 #define TLS1_FLAGS_TLS_PADDING_BUG			0x0008
333 #define SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION	0x0010
334 
335 typedef struct ssl3_state_st
336 	{
337 	long flags;
338 	int delay_buf_pop_ret;
339 
340 	unsigned char read_sequence[8];
341 	unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
342 	unsigned char write_sequence[8];
343 	unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
344 
345 	unsigned char server_random[SSL3_RANDOM_SIZE];
346 	unsigned char client_random[SSL3_RANDOM_SIZE];
347 
348 	/* flags for countermeasure against known-IV weakness */
349 	int need_empty_fragments;
350 	int empty_fragment_done;
351 
352 	SSL3_BUFFER rbuf;	/* read IO goes into here */
353 	SSL3_BUFFER wbuf;	/* write IO goes into here */
354 
355 	SSL3_RECORD rrec;	/* each decoded record goes in here */
356 	SSL3_RECORD wrec;	/* goes out from here */
357 
358 	/* storage for Alert/Handshake protocol data received but not
359 	 * yet processed by ssl3_read_bytes: */
360 	unsigned char alert_fragment[2];
361 	unsigned int alert_fragment_len;
362 	unsigned char handshake_fragment[4];
363 	unsigned int handshake_fragment_len;
364 
365 	/* partial write - check the numbers match */
366 	unsigned int wnum;	/* number of bytes sent so far */
367 	int wpend_tot;		/* number bytes written */
368 	int wpend_type;
369 	int wpend_ret;		/* number of bytes submitted */
370 	const unsigned char *wpend_buf;
371 
372 	/* used during startup, digest all incoming/outgoing packets */
373 	EVP_MD_CTX finish_dgst1;
374 	EVP_MD_CTX finish_dgst2;
375 
376 	/* this is set whenerver we see a change_cipher_spec message
377 	 * come in when we are not looking for one */
378 	int change_cipher_spec;
379 
380 	int warn_alert;
381 	int fatal_alert;
382 	/* we allow one fatal and one warning alert to be outstanding,
383 	 * send close alert via the warning alert */
384 	int alert_dispatch;
385 	unsigned char send_alert[2];
386 
387 	/* This flag is set when we should renegotiate ASAP, basically when
388 	 * there is no more data in the read or write buffers */
389 	int renegotiate;
390 	int total_renegotiations;
391 	int num_renegotiations;
392 
393 	int in_read_app_data;
394 
395 	struct	{
396 		/* actually only needs to be 16+20 */
397 		unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
398 
399 		/* actually only need to be 16+20 for SSLv3 and 12 for TLS */
400 		unsigned char finish_md[EVP_MAX_MD_SIZE*2];
401 		int finish_md_len;
402 		unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
403 		int peer_finish_md_len;
404 
405 		unsigned long message_size;
406 		int message_type;
407 
408 		/* used to hold the new cipher we are going to use */
409 		SSL_CIPHER *new_cipher;
410 #ifndef OPENSSL_NO_DH
411 		DH *dh;
412 #endif
413 
414 #ifndef OPENSSL_NO_ECDH
415 		EC_KEY *ecdh; /* holds short lived ECDH key */
416 #endif
417 
418 		/* used when SSL_ST_FLUSH_DATA is entered */
419 		int next_state;
420 
421 		int reuse_message;
422 
423 		/* used for certificate requests */
424 		int cert_req;
425 		int ctype_num;
426 		char ctype[SSL3_CT_NUMBER];
427 		STACK_OF(X509_NAME) *ca_names;
428 
429 		int use_rsa_tmp;
430 
431 		int key_block_length;
432 		unsigned char *key_block;
433 
434 		const EVP_CIPHER *new_sym_enc;
435 		const EVP_MD *new_hash;
436 #ifndef OPENSSL_NO_COMP
437 		const SSL_COMP *new_compression;
438 #else
439 		char *new_compression;
440 #endif
441 		int cert_request;
442 		} tmp;
443 
444 	} SSL3_STATE;
445 
446 
447 /* SSLv3 */
448 /*client */
449 /* extra state */
450 #define SSL3_ST_CW_FLUSH		(0x100|SSL_ST_CONNECT)
451 /* write to server */
452 #define SSL3_ST_CW_CLNT_HELLO_A		(0x110|SSL_ST_CONNECT)
453 #define SSL3_ST_CW_CLNT_HELLO_B		(0x111|SSL_ST_CONNECT)
454 /* read from server */
455 #define SSL3_ST_CR_SRVR_HELLO_A		(0x120|SSL_ST_CONNECT)
456 #define SSL3_ST_CR_SRVR_HELLO_B		(0x121|SSL_ST_CONNECT)
457 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
458 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
459 #define SSL3_ST_CR_CERT_A		(0x130|SSL_ST_CONNECT)
460 #define SSL3_ST_CR_CERT_B		(0x131|SSL_ST_CONNECT)
461 #define SSL3_ST_CR_KEY_EXCH_A		(0x140|SSL_ST_CONNECT)
462 #define SSL3_ST_CR_KEY_EXCH_B		(0x141|SSL_ST_CONNECT)
463 #define SSL3_ST_CR_CERT_REQ_A		(0x150|SSL_ST_CONNECT)
464 #define SSL3_ST_CR_CERT_REQ_B		(0x151|SSL_ST_CONNECT)
465 #define SSL3_ST_CR_SRVR_DONE_A		(0x160|SSL_ST_CONNECT)
466 #define SSL3_ST_CR_SRVR_DONE_B		(0x161|SSL_ST_CONNECT)
467 /* write to server */
468 #define SSL3_ST_CW_CERT_A		(0x170|SSL_ST_CONNECT)
469 #define SSL3_ST_CW_CERT_B		(0x171|SSL_ST_CONNECT)
470 #define SSL3_ST_CW_CERT_C		(0x172|SSL_ST_CONNECT)
471 #define SSL3_ST_CW_CERT_D		(0x173|SSL_ST_CONNECT)
472 #define SSL3_ST_CW_KEY_EXCH_A		(0x180|SSL_ST_CONNECT)
473 #define SSL3_ST_CW_KEY_EXCH_B		(0x181|SSL_ST_CONNECT)
474 #define SSL3_ST_CW_CERT_VRFY_A		(0x190|SSL_ST_CONNECT)
475 #define SSL3_ST_CW_CERT_VRFY_B		(0x191|SSL_ST_CONNECT)
476 #define SSL3_ST_CW_CHANGE_A		(0x1A0|SSL_ST_CONNECT)
477 #define SSL3_ST_CW_CHANGE_B		(0x1A1|SSL_ST_CONNECT)
478 #define SSL3_ST_CW_FINISHED_A		(0x1B0|SSL_ST_CONNECT)
479 #define SSL3_ST_CW_FINISHED_B		(0x1B1|SSL_ST_CONNECT)
480 /* read from server */
481 #define SSL3_ST_CR_CHANGE_A		(0x1C0|SSL_ST_CONNECT)
482 #define SSL3_ST_CR_CHANGE_B		(0x1C1|SSL_ST_CONNECT)
483 #define SSL3_ST_CR_FINISHED_A		(0x1D0|SSL_ST_CONNECT)
484 #define SSL3_ST_CR_FINISHED_B		(0x1D1|SSL_ST_CONNECT)
485 #define SSL3_ST_CR_SESSION_TICKET_A	(0x1E0|SSL_ST_CONNECT)
486 #define SSL3_ST_CR_SESSION_TICKET_B	(0x1E1|SSL_ST_CONNECT)
487 #define SSL3_ST_CR_CERT_STATUS_A	(0x1F0|SSL_ST_CONNECT)
488 #define SSL3_ST_CR_CERT_STATUS_B	(0x1F1|SSL_ST_CONNECT)
489 
490 /* server */
491 /* extra state */
492 #define SSL3_ST_SW_FLUSH		(0x100|SSL_ST_ACCEPT)
493 /* read from client */
494 /* Do not change the number values, they do matter */
495 #define SSL3_ST_SR_CLNT_HELLO_A		(0x110|SSL_ST_ACCEPT)
496 #define SSL3_ST_SR_CLNT_HELLO_B		(0x111|SSL_ST_ACCEPT)
497 #define SSL3_ST_SR_CLNT_HELLO_C		(0x112|SSL_ST_ACCEPT)
498 /* write to client */
499 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
500 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
501 #define SSL3_ST_SW_HELLO_REQ_A		(0x120|SSL_ST_ACCEPT)
502 #define SSL3_ST_SW_HELLO_REQ_B		(0x121|SSL_ST_ACCEPT)
503 #define SSL3_ST_SW_HELLO_REQ_C		(0x122|SSL_ST_ACCEPT)
504 #define SSL3_ST_SW_SRVR_HELLO_A		(0x130|SSL_ST_ACCEPT)
505 #define SSL3_ST_SW_SRVR_HELLO_B		(0x131|SSL_ST_ACCEPT)
506 #define SSL3_ST_SW_CERT_A		(0x140|SSL_ST_ACCEPT)
507 #define SSL3_ST_SW_CERT_B		(0x141|SSL_ST_ACCEPT)
508 #define SSL3_ST_SW_KEY_EXCH_A		(0x150|SSL_ST_ACCEPT)
509 #define SSL3_ST_SW_KEY_EXCH_B		(0x151|SSL_ST_ACCEPT)
510 #define SSL3_ST_SW_CERT_REQ_A		(0x160|SSL_ST_ACCEPT)
511 #define SSL3_ST_SW_CERT_REQ_B		(0x161|SSL_ST_ACCEPT)
512 #define SSL3_ST_SW_SRVR_DONE_A		(0x170|SSL_ST_ACCEPT)
513 #define SSL3_ST_SW_SRVR_DONE_B		(0x171|SSL_ST_ACCEPT)
514 /* read from client */
515 #define SSL3_ST_SR_CERT_A		(0x180|SSL_ST_ACCEPT)
516 #define SSL3_ST_SR_CERT_B		(0x181|SSL_ST_ACCEPT)
517 #define SSL3_ST_SR_KEY_EXCH_A		(0x190|SSL_ST_ACCEPT)
518 #define SSL3_ST_SR_KEY_EXCH_B		(0x191|SSL_ST_ACCEPT)
519 #define SSL3_ST_SR_CERT_VRFY_A		(0x1A0|SSL_ST_ACCEPT)
520 #define SSL3_ST_SR_CERT_VRFY_B		(0x1A1|SSL_ST_ACCEPT)
521 #define SSL3_ST_SR_CHANGE_A		(0x1B0|SSL_ST_ACCEPT)
522 #define SSL3_ST_SR_CHANGE_B		(0x1B1|SSL_ST_ACCEPT)
523 #define SSL3_ST_SR_FINISHED_A		(0x1C0|SSL_ST_ACCEPT)
524 #define SSL3_ST_SR_FINISHED_B		(0x1C1|SSL_ST_ACCEPT)
525 /* write to client */
526 #define SSL3_ST_SW_CHANGE_A		(0x1D0|SSL_ST_ACCEPT)
527 #define SSL3_ST_SW_CHANGE_B		(0x1D1|SSL_ST_ACCEPT)
528 #define SSL3_ST_SW_FINISHED_A		(0x1E0|SSL_ST_ACCEPT)
529 #define SSL3_ST_SW_FINISHED_B		(0x1E1|SSL_ST_ACCEPT)
530 #define SSL3_ST_SW_SESSION_TICKET_A	(0x1F0|SSL_ST_ACCEPT)
531 #define SSL3_ST_SW_SESSION_TICKET_B	(0x1F1|SSL_ST_ACCEPT)
532 #define SSL3_ST_SW_CERT_STATUS_A	(0x200|SSL_ST_ACCEPT)
533 #define SSL3_ST_SW_CERT_STATUS_B	(0x201|SSL_ST_ACCEPT)
534 
535 #define SSL3_MT_HELLO_REQUEST			0
536 #define SSL3_MT_CLIENT_HELLO			1
537 #define SSL3_MT_SERVER_HELLO			2
538 #define	SSL3_MT_NEWSESSION_TICKET		4
539 #define SSL3_MT_CERTIFICATE			11
540 #define SSL3_MT_SERVER_KEY_EXCHANGE		12
541 #define SSL3_MT_CERTIFICATE_REQUEST		13
542 #define SSL3_MT_SERVER_DONE			14
543 #define SSL3_MT_CERTIFICATE_VERIFY		15
544 #define SSL3_MT_CLIENT_KEY_EXCHANGE		16
545 #define SSL3_MT_FINISHED			20
546 #define SSL3_MT_CERTIFICATE_STATUS		22
547 #define DTLS1_MT_HELLO_VERIFY_REQUEST    3
548 
549 
550 #define SSL3_MT_CCS				1
551 
552 /* These are used when changing over to a new cipher */
553 #define SSL3_CC_READ		0x01
554 #define SSL3_CC_WRITE		0x02
555 #define SSL3_CC_CLIENT		0x10
556 #define SSL3_CC_SERVER		0x20
557 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE	(SSL3_CC_CLIENT|SSL3_CC_WRITE)
558 #define SSL3_CHANGE_CIPHER_SERVER_READ	(SSL3_CC_SERVER|SSL3_CC_READ)
559 #define SSL3_CHANGE_CIPHER_CLIENT_READ	(SSL3_CC_CLIENT|SSL3_CC_READ)
560 #define SSL3_CHANGE_CIPHER_SERVER_WRITE	(SSL3_CC_SERVER|SSL3_CC_WRITE)
561 
562 #ifdef  __cplusplus
563 }
564 #endif
565 #endif
566 
567