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ssl3.h
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1 /* ssl/ssl3.h */
2 /* Copyright (C) 1995-1998 Eric Young ([email protected])
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young ([email protected]).
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 ([email protected]).
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 ([email protected])"
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 ([email protected])"
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  * [email protected].
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  * ([email protected]). This product includes software written by Tim
108  * Hudson ([email protected]).
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 
127 #ifdef __cplusplus
128 extern "C" {
129 #endif
130 
131 /* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */
132 #define SSL3_CK_SCSV 0x030000FF
133 
134 #define SSL3_CK_RSA_NULL_MD5 0x03000001
135 #define SSL3_CK_RSA_NULL_SHA 0x03000002
136 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003
137 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004
138 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005
139 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006
140 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
141 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
142 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
143 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
144 
145 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
146 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
147 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
148 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
149 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
150 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
151 
152 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
153 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
154 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
155 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
156 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
157 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
158 
159 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017
160 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018
161 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
162 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
163 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
164 
165 #if 0
166  #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
167  #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
168  #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
169  to remove according to David Hopwood <[email protected]>
170  of the ietf-tls list */
171  #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
172  #endif
173 #endif
174 
175 /* VRS Additional Kerberos5 entries
176  */
177 #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E
178 #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F
179 #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020
180 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021
181 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022
182 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023
183 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024
184 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025
185 
186 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026
187 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027
188 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028
189 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029
190 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A
191 #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B
192 
193 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
194 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
195 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
196 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
197 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
198 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
199 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
200 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
201 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
202 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
203 
204 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
205 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
206 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
207 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
208 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
209 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
210 
211 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
212 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
213 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
214 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
215 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
216 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
217 
218 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
219 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
220 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
221 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
222 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
223 
224 #if 0
225  #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
226  #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
227  #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
228 #endif
229 
230 #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
231 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
232 #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA"
233 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA"
234 #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5"
235 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5"
236 #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5"
237 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5"
238 
239 #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA"
240 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA"
241 #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA"
242 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5"
243 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5"
244 #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5"
245 
246 #define SSL3_SSL_SESSION_ID_LENGTH 32
247 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
248 
249 #define SSL3_MASTER_SECRET_SIZE 48
250 #define SSL3_RANDOM_SIZE 32
251 #define SSL3_SESSION_ID_SIZE 32
252 #define SSL3_RT_HEADER_LENGTH 5
253 
254 #ifndef SSL3_ALIGN_PAYLOAD
255  /* Some will argue that this increases memory footprint, but it's
256  * not actually true. Point is that malloc has to return at least
257  * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
258  * 3 bytes in either case. Suggested pre-gaping simply moves these
259  * wasted bytes from the end of allocated region to its front,
260  * but makes data payload aligned, which improves performance:-) */
261 # define SSL3_ALIGN_PAYLOAD 8
262 #else
263 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
264 # error "insane SSL3_ALIGN_PAYLOAD"
265 # undef SSL3_ALIGN_PAYLOAD
266 # endif
267 #endif
268 
269 /* This is the maximum MAC (digest) size used by the SSL library.
270  * Currently maximum of 20 is used by SHA1, but we reserve for
271  * future extension for 512-bit hashes.
272  */
273 
274 #define SSL3_RT_MAX_MD_SIZE 64
275 
276 /* Maximum block size used in all ciphersuites. Currently 16 for AES.
277  */
278 
279 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
280 
281 #define SSL3_RT_MAX_EXTRA (16384)
282 
283 /* Maximum plaintext length: defined by SSL/TLS standards */
284 #define SSL3_RT_MAX_PLAIN_LENGTH 16384
285 /* Maximum compression overhead: defined by SSL/TLS standards */
286 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
287 
288 /* The standards give a maximum encryption overhead of 1024 bytes.
289  * In practice the value is lower than this. The overhead is the maximum
290  * number of padding bytes (256) plus the mac size.
291  */
292 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
293 
294 /* OpenSSL currently only uses a padding length of at most one block so
295  * the send overhead is smaller.
296  */
297 
298 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
299  (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
300 
301 /* If compression isn't used don't include the compression overhead */
302 
303 #ifdef OPENSSL_NO_COMP
304 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
305 #else
306 #define SSL3_RT_MAX_COMPRESSED_LENGTH \
307  (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
308 #endif
309 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \
310  (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
311 #define SSL3_RT_MAX_PACKET_SIZE \
312  (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
313 
314 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
315 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
316 
317 #define SSL3_VERSION 0x0300
318 #define SSL3_VERSION_MAJOR 0x03
319 #define SSL3_VERSION_MINOR 0x00
320 
321 #define SSL3_RT_CHANGE_CIPHER_SPEC 20
322 #define SSL3_RT_ALERT 21
323 #define SSL3_RT_HANDSHAKE 22
324 #define SSL3_RT_APPLICATION_DATA 23
325 #define TLS1_RT_HEARTBEAT 24
326 
327 #define SSL3_AL_WARNING 1
328 #define SSL3_AL_FATAL 2
329 
330 #define SSL3_AD_CLOSE_NOTIFY 0
331 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */
332 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */
333 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */
334 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */
335 #define SSL3_AD_NO_CERTIFICATE 41
336 #define SSL3_AD_BAD_CERTIFICATE 42
337 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
338 #define SSL3_AD_CERTIFICATE_REVOKED 44
339 #define SSL3_AD_CERTIFICATE_EXPIRED 45
340 #define SSL3_AD_CERTIFICATE_UNKNOWN 46
341 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */
342 
343 #define TLS1_HB_REQUEST 1
344 #define TLS1_HB_RESPONSE 2
345 
346 #ifndef OPENSSL_NO_SSL_INTERN
347 
348 typedef struct ssl3_record_st
349  {
350 /*r */ int type; /* type of record */
351 /*rw*/ unsigned int length; /* How many bytes available */
352 /*r */ unsigned int off; /* read/write offset into 'buf' */
353 /*rw*/ unsigned char *data; /* pointer to the record data */
354 /*rw*/ unsigned char *input; /* where the decode bytes are */
355 /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
356 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
357 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
358  } SSL3_RECORD;
359 
360 typedef struct ssl3_buffer_st
361  {
362  unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
363  * see ssl3_setup_buffers() */
364  size_t len; /* buffer size */
365  int offset; /* where to 'copy from' */
366  int left; /* how many bytes left */
367  } SSL3_BUFFER;
368 
369 #endif
370 
371 #define SSL3_CT_RSA_SIGN 1
372 #define SSL3_CT_DSS_SIGN 2
373 #define SSL3_CT_RSA_FIXED_DH 3
374 #define SSL3_CT_DSS_FIXED_DH 4
375 #define SSL3_CT_RSA_EPHEMERAL_DH 5
376 #define SSL3_CT_DSS_EPHEMERAL_DH 6
377 #define SSL3_CT_FORTEZZA_DMS 20
378 /* SSL3_CT_NUMBER is used to size arrays and it must be large
379  * enough to contain all of the cert types defined either for
380  * SSLv3 and TLSv1.
381  */
382 #define SSL3_CT_NUMBER 9
383 
384 
385 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001
386 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002
387 #define SSL3_FLAGS_POP_BUFFER 0x0004
388 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008
389 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010
390 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020
391 
392 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we
393  * restart a handshake because of MS SGC and so prevents us
394  * from restarting the handshake in a loop. It's reset on a
395  * renegotiation, so effectively limits the client to one restart
396  * per negotiation. This limits the possibility of a DDoS
397  * attack where the client handshakes in a loop using SGC to
398  * restart. Servers which permit renegotiation can still be
399  * effected, but we can't prevent that.
400  */
401 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040
402 
403 #ifndef OPENSSL_NO_SSL_INTERN
404 
405 typedef struct ssl3_state_st
406  {
407  long flags;
408  int delay_buf_pop_ret;
409 
410  unsigned char read_sequence[8];
411  int read_mac_secret_size;
412  unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
413  unsigned char write_sequence[8];
414  int write_mac_secret_size;
415  unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
416 
417  unsigned char server_random[SSL3_RANDOM_SIZE];
418  unsigned char client_random[SSL3_RANDOM_SIZE];
419 
420  /* flags for countermeasure against known-IV weakness */
421  int need_empty_fragments;
422  int empty_fragment_done;
423 
424  /* The value of 'extra' when the buffers were initialized */
425  int init_extra;
426 
427  SSL3_BUFFER rbuf; /* read IO goes into here */
428  SSL3_BUFFER wbuf; /* write IO goes into here */
429 
430  SSL3_RECORD rrec; /* each decoded record goes in here */
431  SSL3_RECORD wrec; /* goes out from here */
432 
433  /* storage for Alert/Handshake protocol data received but not
434  * yet processed by ssl3_read_bytes: */
435  unsigned char alert_fragment[2];
436  unsigned int alert_fragment_len;
437  unsigned char handshake_fragment[4];
438  unsigned int handshake_fragment_len;
439 
440  /* partial write - check the numbers match */
441  unsigned int wnum; /* number of bytes sent so far */
442  int wpend_tot; /* number bytes written */
443  int wpend_type;
444  int wpend_ret; /* number of bytes submitted */
445  const unsigned char *wpend_buf;
446 
447  /* used during startup, digest all incoming/outgoing packets */
448  BIO *handshake_buffer;
449  /* When set of handshake digests is determined, buffer is hashed
450  * and freed and MD_CTX-es for all required digests are stored in
451  * this array */
452  EVP_MD_CTX **handshake_dgst;
453  /* this is set whenerver we see a change_cipher_spec message
454  * come in when we are not looking for one */
455  int change_cipher_spec;
456 
457  int warn_alert;
458  int fatal_alert;
459  /* we allow one fatal and one warning alert to be outstanding,
460  * send close alert via the warning alert */
461  int alert_dispatch;
462  unsigned char send_alert[2];
463 
464  /* This flag is set when we should renegotiate ASAP, basically when
465  * there is no more data in the read or write buffers */
466  int renegotiate;
467  int total_renegotiations;
468  int num_renegotiations;
469 
470  int in_read_app_data;
471 
472  /* Opaque PRF input as used for the current handshake.
473  * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined
474  * (otherwise, they are merely present to improve binary compatibility) */
475  void *client_opaque_prf_input;
476  size_t client_opaque_prf_input_len;
477  void *server_opaque_prf_input;
478  size_t server_opaque_prf_input_len;
479 
480  struct {
481  /* actually only needs to be 16+20 */
482  unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
483 
484  /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
485  unsigned char finish_md[EVP_MAX_MD_SIZE*2];
486  int finish_md_len;
487  unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
488  int peer_finish_md_len;
489 
490  unsigned long message_size;
491  int message_type;
492 
493  /* used to hold the new cipher we are going to use */
494  const SSL_CIPHER *new_cipher;
495 #ifndef OPENSSL_NO_DH
496  DH *dh;
497 #endif
498 
499 #ifndef OPENSSL_NO_ECDH
500  EC_KEY *ecdh; /* holds short lived ECDH key */
501 #endif
502 
503  /* used when SSL_ST_FLUSH_DATA is entered */
504  int next_state;
505 
506  int reuse_message;
507 
508  /* used for certificate requests */
509  int cert_req;
510  int ctype_num;
511  char ctype[SSL3_CT_NUMBER];
512  STACK_OF(X509_NAME) *ca_names;
513 
514  int use_rsa_tmp;
515 
516  int key_block_length;
517  unsigned char *key_block;
518 
519  const EVP_CIPHER *new_sym_enc;
520  const EVP_MD *new_hash;
521  int new_mac_pkey_type;
522  int new_mac_secret_size;
523 #ifndef OPENSSL_NO_COMP
524  const SSL_COMP *new_compression;
525 #else
526  char *new_compression;
527 #endif
528  int cert_request;
529  } tmp;
530 
531  /* Connection binding to prevent renegotiation attacks */
532  unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
533  unsigned char previous_client_finished_len;
534  unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
535  unsigned char previous_server_finished_len;
536  int send_connection_binding; /* TODOEKR */
537 
538 #ifndef OPENSSL_NO_NEXTPROTONEG
539  /* Set if we saw the Next Protocol Negotiation extension from our peer. */
540  int next_proto_neg_seen;
541 #endif
542  } SSL3_STATE;
543 
544 #endif
545 
546 /* SSLv3 */
547 /*client */
548 /* extra state */
549 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT)
550 #ifndef OPENSSL_NO_SCTP
551 #define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT)
552 #define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT)
553 #endif
554 /* write to server */
555 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT)
556 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT)
557 /* read from server */
558 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT)
559 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT)
560 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
561 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
562 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT)
563 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT)
564 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT)
565 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT)
566 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT)
567 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT)
568 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT)
569 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT)
570 /* write to server */
571 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT)
572 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT)
573 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT)
574 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT)
575 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT)
576 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT)
577 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT)
578 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT)
579 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT)
580 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT)
581 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT)
582 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT)
583 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT)
584 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT)
585 /* read from server */
586 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT)
587 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT)
588 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT)
589 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT)
590 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT)
591 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT)
592 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT)
593 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT)
594 
595 /* server */
596 /* extra state */
597 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT)
598 #ifndef OPENSSL_NO_SCTP
599 #define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT)
600 #define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT)
601 #endif
602 /* read from client */
603 /* Do not change the number values, they do matter */
604 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT)
605 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT)
606 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT)
607 /* write to client */
608 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
609 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
610 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT)
611 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT)
612 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT)
613 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT)
614 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT)
615 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT)
616 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT)
617 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT)
618 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT)
619 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT)
620 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT)
621 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT)
622 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT)
623 /* read from client */
624 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT)
625 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT)
626 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT)
627 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT)
628 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT)
629 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT)
630 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT)
631 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT)
632 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT)
633 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT)
634 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT)
635 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT)
636 /* write to client */
637 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT)
638 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT)
639 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT)
640 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT)
641 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT)
642 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT)
643 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT)
644 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT)
645 
646 #define SSL3_MT_HELLO_REQUEST 0
647 #define SSL3_MT_CLIENT_HELLO 1
648 #define SSL3_MT_SERVER_HELLO 2
649 #define SSL3_MT_NEWSESSION_TICKET 4
650 #define SSL3_MT_CERTIFICATE 11
651 #define SSL3_MT_SERVER_KEY_EXCHANGE 12
652 #define SSL3_MT_CERTIFICATE_REQUEST 13
653 #define SSL3_MT_SERVER_DONE 14
654 #define SSL3_MT_CERTIFICATE_VERIFY 15
655 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16
656 #define SSL3_MT_FINISHED 20
657 #define SSL3_MT_CERTIFICATE_STATUS 22
658 #define SSL3_MT_NEXT_PROTO 67
659 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3
660 
661 
662 #define SSL3_MT_CCS 1
663 
664 /* These are used when changing over to a new cipher */
665 #define SSL3_CC_READ 0x01
666 #define SSL3_CC_WRITE 0x02
667 #define SSL3_CC_CLIENT 0x10
668 #define SSL3_CC_SERVER 0x20
669 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
670 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ)
671 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ)
672 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)
673 
674 #ifdef __cplusplus
675 }
676 #endif
677 #endif
678 
Generated on Thu Jan 10 2013 09:53:42 for OpenSSL by   doxygen 1.8.2