Workarounds to make broken programs happy (such as s_client and s_server).
[openssl.git] / ssl / ssl3.h
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 #ifndef HEADER_SSL3_H 
60 #define HEADER_SSL3_H 
61
62 #include <openssl/buffer.h>
63 #include <openssl/evp.h>
64 #include <openssl/ssl.h>
65
66 #ifdef  __cplusplus
67 extern "C" {
68 #endif
69
70 #define SSL3_CK_RSA_NULL_MD5                    0x03000001
71 #define SSL3_CK_RSA_NULL_SHA                    0x03000002
72 #define SSL3_CK_RSA_RC4_40_MD5                  0x03000003
73 #define SSL3_CK_RSA_RC4_128_MD5                 0x03000004
74 #define SSL3_CK_RSA_RC4_128_SHA                 0x03000005
75 #define SSL3_CK_RSA_RC2_40_MD5                  0x03000006
76 #define SSL3_CK_RSA_IDEA_128_SHA                0x03000007
77 #define SSL3_CK_RSA_DES_40_CBC_SHA              0x03000008
78 #define SSL3_CK_RSA_DES_64_CBC_SHA              0x03000009
79 #define SSL3_CK_RSA_DES_192_CBC3_SHA            0x0300000A
80
81 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA           0x0300000B
82 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA           0x0300000C
83 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA         0x0300000D
84 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA           0x0300000E
85 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA           0x0300000F
86 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA         0x03000010
87
88 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA          0x03000011
89 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA          0x03000012
90 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA        0x03000013
91 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA          0x03000014
92 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA          0x03000015
93 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA        0x03000016
94
95 #define SSL3_CK_ADH_RC4_40_MD5                  0x03000017
96 #define SSL3_CK_ADH_RC4_128_MD5                 0x03000018
97 #define SSL3_CK_ADH_DES_40_CBC_SHA              0x03000019
98 #define SSL3_CK_ADH_DES_64_CBC_SHA              0x0300001A
99 #define SSL3_CK_ADH_DES_192_CBC_SHA             0x0300001B
100
101 #define SSL3_CK_FZA_DMS_NULL_SHA                0x0300001C
102 #define SSL3_CK_FZA_DMS_FZA_SHA                 0x0300001D
103 #define SSL3_CK_FZA_DMS_RC4_SHA                 0x0300001E
104
105 #define SSL3_TXT_RSA_NULL_MD5                   "NULL-MD5"
106 #define SSL3_TXT_RSA_NULL_SHA                   "NULL-SHA"
107 #define SSL3_TXT_RSA_RC4_40_MD5                 "EXP-RC4-MD5"
108 #define SSL3_TXT_RSA_RC4_128_MD5                "RC4-MD5"
109 #define SSL3_TXT_RSA_RC4_128_SHA                "RC4-SHA"
110 #define SSL3_TXT_RSA_RC2_40_MD5                 "EXP-RC2-CBC-MD5"
111 #define SSL3_TXT_RSA_IDEA_128_SHA               "IDEA-CBC-SHA"
112 #define SSL3_TXT_RSA_DES_40_CBC_SHA             "EXP-DES-CBC-SHA"
113 #define SSL3_TXT_RSA_DES_64_CBC_SHA             "DES-CBC-SHA"
114 #define SSL3_TXT_RSA_DES_192_CBC3_SHA           "DES-CBC3-SHA"
115
116 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA          "EXP-DH-DSS-DES-CBC-SHA"
117 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA          "DH-DSS-DES-CBC-SHA"
118 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA        "DH-DSS-DES-CBC3-SHA"
119 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA          "EXP-DH-RSA-DES-CBC-SHA"
120 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA          "DH-RSA-DES-CBC-SHA"
121 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA        "DH-RSA-DES-CBC3-SHA"
122
123 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA         "EXP-EDH-DSS-DES-CBC-SHA"
124 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA         "EDH-DSS-DES-CBC-SHA"
125 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA       "EDH-DSS-DES-CBC3-SHA"
126 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA         "EXP-EDH-RSA-DES-CBC-SHA"
127 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA         "EDH-RSA-DES-CBC-SHA"
128 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA       "EDH-RSA-DES-CBC3-SHA"
129
130 #define SSL3_TXT_ADH_RC4_40_MD5                 "EXP-ADH-RC4-MD5"
131 #define SSL3_TXT_ADH_RC4_128_MD5                "ADH-RC4-MD5"
132 #define SSL3_TXT_ADH_DES_40_CBC_SHA             "EXP-ADH-DES-CBC-SHA"
133 #define SSL3_TXT_ADH_DES_64_CBC_SHA             "ADH-DES-CBC-SHA"
134 #define SSL3_TXT_ADH_DES_192_CBC_SHA            "ADH-DES-CBC3-SHA"
135
136 #define SSL3_TXT_FZA_DMS_NULL_SHA               "FZA-NULL-SHA"
137 #define SSL3_TXT_FZA_DMS_FZA_SHA                "FZA-FZA-CBC-SHA"
138 #define SSL3_TXT_FZA_DMS_RC4_SHA                "FZA-RC4-SHA"
139
140 #define SSL3_SSL_SESSION_ID_LENGTH              32
141 #define SSL3_MAX_SSL_SESSION_ID_LENGTH          32
142
143 #define SSL3_MASTER_SECRET_SIZE                 48
144 #define SSL3_RANDOM_SIZE                        32
145 #define SSL3_SESSION_ID_SIZE                    32
146 #define SSL3_RT_HEADER_LENGTH                   5
147
148 /* Due to MS stuffing up, this can change.... */
149 #if defined(WIN16) || (defined(MSDOS) && !defined(WIN32))
150 #define SSL3_RT_MAX_EXTRA                       (14000)
151 #else
152 #define SSL3_RT_MAX_EXTRA                       (16384)
153 #endif
154
155 #define SSL3_RT_MAX_PLAIN_LENGTH                16384
156 #define SSL3_RT_MAX_COMPRESSED_LENGTH   (1024+SSL3_RT_MAX_PLAIN_LENGTH)
157 #define SSL3_RT_MAX_ENCRYPTED_LENGTH    (1024+SSL3_RT_MAX_COMPRESSED_LENGTH)
158 #define SSL3_RT_MAX_PACKET_SIZE         (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
159 #define SSL3_RT_MAX_DATA_SIZE                   (1024*1024)
160
161 #define SSL3_MD_CLIENT_FINISHED_CONST   "\x43\x4C\x4E\x54"
162 #define SSL3_MD_SERVER_FINISHED_CONST   "\x53\x52\x56\x52"
163
164 #define SSL3_VERSION                    0x0300
165 #define SSL3_VERSION_MAJOR              0x03
166 #define SSL3_VERSION_MINOR              0x00
167
168 #define SSL3_RT_CHANGE_CIPHER_SPEC      20
169 #define SSL3_RT_ALERT                   21
170 #define SSL3_RT_HANDSHAKE               22
171 #define SSL3_RT_APPLICATION_DATA        23
172
173 #define SSL3_AL_WARNING                 1
174 #define SSL3_AL_FATAL                   2
175
176 #define SSL3_AD_CLOSE_NOTIFY             0
177 #define SSL3_AD_UNEXPECTED_MESSAGE      10      /* fatal */
178 #define SSL3_AD_BAD_RECORD_MAC          20      /* fatal */
179 #define SSL3_AD_DECOMPRESSION_FAILURE   30      /* fatal */
180 #define SSL3_AD_HANDSHAKE_FAILURE       40      /* fatal */
181 #define SSL3_AD_NO_CERTIFICATE          41
182 #define SSL3_AD_BAD_CERTIFICATE         42
183 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
184 #define SSL3_AD_CERTIFICATE_REVOKED     44
185 #define SSL3_AD_CERTIFICATE_EXPIRED     45
186 #define SSL3_AD_CERTIFICATE_UNKNOWN     46
187 #define SSL3_AD_ILLEGAL_PARAMETER       47      /* fatal */
188
189 typedef struct ssl3_record_st
190         {
191 /*r */  int type;               /* type of record */
192 /*rw*/  unsigned int length;    /* How many bytes available */
193 /*r */  unsigned int off;       /* read/write offset into 'buf' */
194 /*rw*/  unsigned char *data;    /* pointer to the record data */
195 /*rw*/  unsigned char *input;   /* where the decode bytes are */
196 /*r */  unsigned char *comp;    /* only used with decompression - malloc()ed */
197         } SSL3_RECORD;
198
199 typedef struct ssl3_buffer_st
200         {
201         unsigned char *buf;     /* SSL3_RT_MAX_PACKET_SIZE bytes (more if
202                                  * SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER is set) */
203         int offset;             /* where to 'copy from' */
204         int left;               /* how many bytes left */
205         } SSL3_BUFFER;
206
207 #define SSL3_CT_RSA_SIGN                        1
208 #define SSL3_CT_DSS_SIGN                        2
209 #define SSL3_CT_RSA_FIXED_DH                    3
210 #define SSL3_CT_DSS_FIXED_DH                    4
211 #define SSL3_CT_RSA_EPHEMERAL_DH                5
212 #define SSL3_CT_DSS_EPHEMERAL_DH                6
213 #define SSL3_CT_FORTEZZA_DMS                    20
214 #define SSL3_CT_NUMBER                          7
215
216 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS       0x0001
217 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED        0x0002
218 #define SSL3_FLAGS_POP_BUFFER                   0x0004
219 #define TLS1_FLAGS_TLS_PADDING_BUG              0x0008
220
221 typedef struct ssl3_state_st
222         {
223         long flags;
224         int delay_buf_pop_ret;
225
226         unsigned char read_sequence[8];
227         unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
228         unsigned char write_sequence[8];
229         unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
230
231         unsigned char server_random[SSL3_RANDOM_SIZE];
232         unsigned char client_random[SSL3_RANDOM_SIZE];
233
234         SSL3_BUFFER rbuf;       /* read IO goes into here */
235         SSL3_BUFFER wbuf;       /* write IO goes into here */
236
237         SSL3_RECORD rrec;       /* each decoded record goes in here */
238         SSL3_RECORD wrec;       /* goes out from here */
239
240         /* storage for Alert/Handshake protocol data received but not
241          * yet processed by ssl3_read_bytes: */
242         unsigned char alert_fragment[2];
243         int alert_fragment_len;
244         unsigned char handshake_fragment[4];
245         int handshake_fragment_len;
246
247         /* partial write - check the numbers match */
248         unsigned int wnum;      /* number of bytes sent so far */
249         int wpend_tot;          /* number bytes written */
250         int wpend_type;
251         int wpend_ret;          /* number of bytes submitted */
252         const unsigned char *wpend_buf;
253
254         /* used during startup, digest all incoming/outgoing packets */
255         EVP_MD_CTX finish_dgst1;
256         EVP_MD_CTX finish_dgst2;
257
258         /* this is set whenerver we see a change_cipher_spec message
259          * come in when we are not looking for one */
260         int change_cipher_spec;
261
262         int warn_alert;
263         int fatal_alert;
264         /* we allow one fatal and one warning alert to be outstanding,
265          * send close alert via the warning alert */
266         int alert_dispatch;
267         unsigned char send_alert[2];
268
269         /* This flag is set when we should renegotiate ASAP, basically when
270          * there is no more data in the read or write buffers */
271         int renegotiate;
272         int total_renegotiations;
273         int num_renegotiations;
274
275         int in_read_app_data;
276
277         struct  {
278                 /* actually only needs to be 16+20 */
279                 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
280
281                 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
282                 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
283                 int finish_md_len;
284                 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
285                 int peer_finish_md_len;
286                 
287                 unsigned long message_size;
288                 int message_type;
289
290                 /* used to hold the new cipher we are going to use */
291                 SSL_CIPHER *new_cipher;
292 #ifndef NO_DH
293                 DH *dh;
294 #endif
295                 /* used when SSL_ST_FLUSH_DATA is entered */
296                 int next_state;                 
297
298                 int reuse_message;
299
300                 /* used for certificate requests */
301                 int cert_req;
302                 int ctype_num;
303                 char ctype[SSL3_CT_NUMBER];
304                 STACK_OF(X509_NAME) *ca_names;
305
306                 int use_rsa_tmp;
307
308                 int key_block_length;
309                 unsigned char *key_block;
310
311                 const EVP_CIPHER *new_sym_enc;
312                 const EVP_MD *new_hash;
313 #ifdef HEADER_COMP_H
314                 const SSL_COMP *new_compression;
315 #else
316                 char *new_compression;
317 #endif
318                 int cert_request;
319                 } tmp;
320
321         } SSL3_STATE;
322
323 /* SSLv3 */
324 /*client */
325 /* extra state */
326 #define SSL3_ST_CW_FLUSH                (0x100|SSL_ST_CONNECT)
327 /* write to server */
328 #define SSL3_ST_CW_CLNT_HELLO_A         (0x110|SSL_ST_CONNECT)
329 #define SSL3_ST_CW_CLNT_HELLO_B         (0x111|SSL_ST_CONNECT)
330 /* read from server */
331 #define SSL3_ST_CR_SRVR_HELLO_A         (0x120|SSL_ST_CONNECT)
332 #define SSL3_ST_CR_SRVR_HELLO_B         (0x121|SSL_ST_CONNECT)
333 #define SSL3_ST_CR_CERT_A               (0x130|SSL_ST_CONNECT)
334 #define SSL3_ST_CR_CERT_B               (0x131|SSL_ST_CONNECT)
335 #define SSL3_ST_CR_KEY_EXCH_A           (0x140|SSL_ST_CONNECT)
336 #define SSL3_ST_CR_KEY_EXCH_B           (0x141|SSL_ST_CONNECT)
337 #define SSL3_ST_CR_CERT_REQ_A           (0x150|SSL_ST_CONNECT)
338 #define SSL3_ST_CR_CERT_REQ_B           (0x151|SSL_ST_CONNECT)
339 #define SSL3_ST_CR_SRVR_DONE_A          (0x160|SSL_ST_CONNECT)
340 #define SSL3_ST_CR_SRVR_DONE_B          (0x161|SSL_ST_CONNECT)
341 /* write to server */
342 #define SSL3_ST_CW_CERT_A               (0x170|SSL_ST_CONNECT)
343 #define SSL3_ST_CW_CERT_B               (0x171|SSL_ST_CONNECT)
344 #define SSL3_ST_CW_CERT_C               (0x172|SSL_ST_CONNECT)
345 #define SSL3_ST_CW_CERT_D               (0x173|SSL_ST_CONNECT)
346 #define SSL3_ST_CW_KEY_EXCH_A           (0x180|SSL_ST_CONNECT)
347 #define SSL3_ST_CW_KEY_EXCH_B           (0x181|SSL_ST_CONNECT)
348 #define SSL3_ST_CW_CERT_VRFY_A          (0x190|SSL_ST_CONNECT)
349 #define SSL3_ST_CW_CERT_VRFY_B          (0x191|SSL_ST_CONNECT)
350 #define SSL3_ST_CW_CHANGE_A             (0x1A0|SSL_ST_CONNECT)
351 #define SSL3_ST_CW_CHANGE_B             (0x1A1|SSL_ST_CONNECT)
352 #define SSL3_ST_CW_FINISHED_A           (0x1B0|SSL_ST_CONNECT)
353 #define SSL3_ST_CW_FINISHED_B           (0x1B1|SSL_ST_CONNECT)
354 /* read from server */
355 #define SSL3_ST_CR_CHANGE_A             (0x1C0|SSL_ST_CONNECT)
356 #define SSL3_ST_CR_CHANGE_B             (0x1C1|SSL_ST_CONNECT)
357 #define SSL3_ST_CR_FINISHED_A           (0x1D0|SSL_ST_CONNECT)
358 #define SSL3_ST_CR_FINISHED_B           (0x1D1|SSL_ST_CONNECT)
359
360 /* server */
361 /* extra state */
362 #define SSL3_ST_SW_FLUSH                (0x100|SSL_ST_ACCEPT)
363 /* read from client */
364 /* Do not change the number values, they do matter */
365 #define SSL3_ST_SR_CLNT_HELLO_A         (0x110|SSL_ST_ACCEPT)
366 #define SSL3_ST_SR_CLNT_HELLO_B         (0x111|SSL_ST_ACCEPT)
367 #define SSL3_ST_SR_CLNT_HELLO_C         (0x112|SSL_ST_ACCEPT)
368 /* write to client */
369 #define SSL3_ST_SW_HELLO_REQ_A          (0x120|SSL_ST_ACCEPT)
370 #define SSL3_ST_SW_HELLO_REQ_B          (0x121|SSL_ST_ACCEPT)
371 #define SSL3_ST_SW_HELLO_REQ_C          (0x122|SSL_ST_ACCEPT)
372 #define SSL3_ST_SW_SRVR_HELLO_A         (0x130|SSL_ST_ACCEPT)
373 #define SSL3_ST_SW_SRVR_HELLO_B         (0x131|SSL_ST_ACCEPT)
374 #define SSL3_ST_SW_CERT_A               (0x140|SSL_ST_ACCEPT)
375 #define SSL3_ST_SW_CERT_B               (0x141|SSL_ST_ACCEPT)
376 #define SSL3_ST_SW_KEY_EXCH_A           (0x150|SSL_ST_ACCEPT)
377 #define SSL3_ST_SW_KEY_EXCH_B           (0x151|SSL_ST_ACCEPT)
378 #define SSL3_ST_SW_CERT_REQ_A           (0x160|SSL_ST_ACCEPT)
379 #define SSL3_ST_SW_CERT_REQ_B           (0x161|SSL_ST_ACCEPT)
380 #define SSL3_ST_SW_SRVR_DONE_A          (0x170|SSL_ST_ACCEPT)
381 #define SSL3_ST_SW_SRVR_DONE_B          (0x171|SSL_ST_ACCEPT)
382 /* read from client */
383 #define SSL3_ST_SR_CERT_A               (0x180|SSL_ST_ACCEPT)
384 #define SSL3_ST_SR_CERT_B               (0x181|SSL_ST_ACCEPT)
385 #define SSL3_ST_SR_KEY_EXCH_A           (0x190|SSL_ST_ACCEPT)
386 #define SSL3_ST_SR_KEY_EXCH_B           (0x191|SSL_ST_ACCEPT)
387 #define SSL3_ST_SR_CERT_VRFY_A          (0x1A0|SSL_ST_ACCEPT)
388 #define SSL3_ST_SR_CERT_VRFY_B          (0x1A1|SSL_ST_ACCEPT)
389 #define SSL3_ST_SR_CHANGE_A             (0x1B0|SSL_ST_ACCEPT)
390 #define SSL3_ST_SR_CHANGE_B             (0x1B1|SSL_ST_ACCEPT)
391 #define SSL3_ST_SR_FINISHED_A           (0x1C0|SSL_ST_ACCEPT)
392 #define SSL3_ST_SR_FINISHED_B           (0x1C1|SSL_ST_ACCEPT)
393 /* write to client */
394 #define SSL3_ST_SW_CHANGE_A             (0x1D0|SSL_ST_ACCEPT)
395 #define SSL3_ST_SW_CHANGE_B             (0x1D1|SSL_ST_ACCEPT)
396 #define SSL3_ST_SW_FINISHED_A           (0x1E0|SSL_ST_ACCEPT)
397 #define SSL3_ST_SW_FINISHED_B           (0x1E1|SSL_ST_ACCEPT)
398
399 #define SSL3_MT_HELLO_REQUEST                   0
400 #define SSL3_MT_CLIENT_HELLO                    1
401 #define SSL3_MT_SERVER_HELLO                    2
402 #define SSL3_MT_CERTIFICATE                     11
403 #define SSL3_MT_SERVER_KEY_EXCHANGE             12
404 #define SSL3_MT_CERTIFICATE_REQUEST             13
405 #define SSL3_MT_SERVER_DONE                     14
406 #define SSL3_MT_CERTIFICATE_VERIFY              15
407 #define SSL3_MT_CLIENT_KEY_EXCHANGE             16
408 #define SSL3_MT_FINISHED                        20
409
410 #define SSL3_MT_CCS                             1
411
412 /* These are used when changing over to a new cipher */
413 #define SSL3_CC_READ            0x01
414 #define SSL3_CC_WRITE           0x02
415 #define SSL3_CC_CLIENT          0x10
416 #define SSL3_CC_SERVER          0x20
417 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)  
418 #define SSL3_CHANGE_CIPHER_SERVER_READ  (SSL3_CC_SERVER|SSL3_CC_READ)
419 #define SSL3_CHANGE_CIPHER_CLIENT_READ  (SSL3_CC_CLIENT|SSL3_CC_READ)
420 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)
421
422 #ifdef  __cplusplus
423 }
424 #endif
425 #endif
426