2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
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.
117 #ifndef HEADER_SSL3_H
118 # define HEADER_SSL3_H
120 # ifndef OPENSSL_NO_COMP
121 # include <openssl/comp.h>
123 # include <openssl/buffer.h>
124 # include <openssl/evp.h>
125 # include <openssl/ssl.h>
132 * Signalling cipher suite value from RFC 5746
133 * (TLS_EMPTY_RENEGOTIATION_INFO_SCSV)
135 # define SSL3_CK_SCSV 0x030000FF
138 * Signalling cipher suite value from draft-ietf-tls-downgrade-scsv-00
139 * (TLS_FALLBACK_SCSV)
141 # define SSL3_CK_FALLBACK_SCSV 0x03005600
143 # define SSL3_CK_RSA_NULL_MD5 0x03000001
144 # define SSL3_CK_RSA_NULL_SHA 0x03000002
145 # define SSL3_CK_RSA_RC4_40_MD5 0x03000003
146 # define SSL3_CK_RSA_RC4_128_MD5 0x03000004
147 # define SSL3_CK_RSA_RC4_128_SHA 0x03000005
148 # define SSL3_CK_RSA_RC2_40_MD5 0x03000006
149 # define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
150 # define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
151 # define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
152 # define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
154 # define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
155 # define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
156 # define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
157 # define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
158 # define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
159 # define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
161 # define SSL3_CK_DHE_DSS_DES_40_CBC_SHA 0x03000011
162 # define SSL3_CK_EDH_DSS_DES_40_CBC_SHA SSL3_CK_DHE_DSS_DES_40_CBC_SHA
163 # define SSL3_CK_DHE_DSS_DES_64_CBC_SHA 0x03000012
164 # define SSL3_CK_EDH_DSS_DES_64_CBC_SHA SSL3_CK_DHE_DSS_DES_64_CBC_SHA
165 # define SSL3_CK_DHE_DSS_DES_192_CBC3_SHA 0x03000013
166 # define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA SSL3_CK_DHE_DSS_DES_192_CBC3_SHA
167 # define SSL3_CK_DHE_RSA_DES_40_CBC_SHA 0x03000014
168 # define SSL3_CK_EDH_RSA_DES_40_CBC_SHA SSL3_CK_DHE_RSA_DES_40_CBC_SHA
169 # define SSL3_CK_DHE_RSA_DES_64_CBC_SHA 0x03000015
170 # define SSL3_CK_EDH_RSA_DES_64_CBC_SHA SSL3_CK_DHE_RSA_DES_64_CBC_SHA
171 # define SSL3_CK_DHE_RSA_DES_192_CBC3_SHA 0x03000016
172 # define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA SSL3_CK_DHE_RSA_DES_192_CBC3_SHA
174 # define SSL3_CK_ADH_RC4_40_MD5 0x03000017
175 # define SSL3_CK_ADH_RC4_128_MD5 0x03000018
176 # define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
177 # define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
178 # define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
181 # define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
182 # define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
183 # if 0 /* Because it clashes with KRB5, is never
184 * used any more, and is safe to remove
185 * according to David Hopwood
186 * <david.hopwood@zetnet.co.uk> of the
188 # define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
193 * VRS Additional Kerberos5 entries
195 # define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E
196 # define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F
197 # define SSL3_CK_KRB5_RC4_128_SHA 0x03000020
198 # define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021
199 # define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022
200 # define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023
201 # define SSL3_CK_KRB5_RC4_128_MD5 0x03000024
202 # define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025
204 # define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026
205 # define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027
206 # define SSL3_CK_KRB5_RC4_40_SHA 0x03000028
207 # define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029
208 # define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A
209 # define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B
211 # define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
212 # define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
213 # define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
214 # define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
215 # define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
216 # define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
217 # define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
218 # define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
219 # define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
220 # define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
222 # define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
223 # define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
224 # define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
225 # define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
226 # define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
227 # define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
229 # define SSL3_TXT_DHE_DSS_DES_40_CBC_SHA "EXP-DHE-DSS-DES-CBC-SHA"
230 # define SSL3_TXT_DHE_DSS_DES_64_CBC_SHA "DHE-DSS-DES-CBC-SHA"
231 # define SSL3_TXT_DHE_DSS_DES_192_CBC3_SHA "DHE-DSS-DES-CBC3-SHA"
232 # define SSL3_TXT_DHE_RSA_DES_40_CBC_SHA "EXP-DHE-RSA-DES-CBC-SHA"
233 # define SSL3_TXT_DHE_RSA_DES_64_CBC_SHA "DHE-RSA-DES-CBC-SHA"
234 # define SSL3_TXT_DHE_RSA_DES_192_CBC3_SHA "DHE-RSA-DES-CBC3-SHA"
237 * This next block of six "EDH" labels is for backward compatibility with
238 * older versions of OpenSSL. New code should use the six "DHE" labels above
241 # define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
242 # define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
243 # define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
244 # define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
245 # define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
246 # define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
248 # define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
249 # define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
250 # define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
251 # define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
252 # define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
255 # define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
256 # define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
257 # define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
260 # define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
261 # define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
262 # define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA"
263 # define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA"
264 # define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5"
265 # define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5"
266 # define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5"
267 # define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5"
269 # define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA"
270 # define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA"
271 # define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA"
272 # define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5"
273 # define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5"
274 # define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5"
276 # define SSL3_SSL_SESSION_ID_LENGTH 32
277 # define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
279 # define SSL3_MASTER_SECRET_SIZE 48
280 # define SSL3_RANDOM_SIZE 32
281 # define SSL3_SESSION_ID_SIZE 32
282 # define SSL3_RT_HEADER_LENGTH 5
284 # define SSL3_HM_HEADER_LENGTH 4
286 # ifndef SSL3_ALIGN_PAYLOAD
288 * Some will argue that this increases memory footprint, but it's not
289 * actually true. Point is that malloc has to return at least 64-bit aligned
290 * pointers, meaning that allocating 5 bytes wastes 3 bytes in either case.
291 * Suggested pre-gaping simply moves these wasted bytes from the end of
292 * allocated region to its front, but makes data payload aligned, which
293 * improves performance:-)
295 # define SSL3_ALIGN_PAYLOAD 8
297 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
298 # error "insane SSL3_ALIGN_PAYLOAD"
299 # undef SSL3_ALIGN_PAYLOAD
304 * This is the maximum MAC (digest) size used by the SSL library. Currently
305 * maximum of 20 is used by SHA1, but we reserve for future extension for
309 # define SSL3_RT_MAX_MD_SIZE 64
312 * Maximum block size used in all ciphersuites. Currently 16 for AES.
315 # define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
317 # define SSL3_RT_MAX_EXTRA (16384)
319 /* Maximum plaintext length: defined by SSL/TLS standards */
320 # define SSL3_RT_MAX_PLAIN_LENGTH 16384
321 /* Maximum compression overhead: defined by SSL/TLS standards */
322 # define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
325 * The standards give a maximum encryption overhead of 1024 bytes. In
326 * practice the value is lower than this. The overhead is the maximum number
327 * of padding bytes (256) plus the mac size.
329 # define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
332 * OpenSSL currently only uses a padding length of at most one block so the
333 * send overhead is smaller.
336 # define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
337 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
339 /* If compression isn't used don't include the compression overhead */
341 # ifdef OPENSSL_NO_COMP
342 # define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
344 # define SSL3_RT_MAX_COMPRESSED_LENGTH \
345 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
347 # define SSL3_RT_MAX_ENCRYPTED_LENGTH \
348 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
349 # define SSL3_RT_MAX_PACKET_SIZE \
350 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
352 # define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
353 # define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
355 # define SSL3_VERSION 0x0300
356 # define SSL3_VERSION_MAJOR 0x03
357 # define SSL3_VERSION_MINOR 0x00
359 # define SSL3_RT_CHANGE_CIPHER_SPEC 20
360 # define SSL3_RT_ALERT 21
361 # define SSL3_RT_HANDSHAKE 22
362 # define SSL3_RT_APPLICATION_DATA 23
363 # define TLS1_RT_HEARTBEAT 24
365 /* Pseudo content types to indicate additional parameters */
366 # define TLS1_RT_CRYPTO 0x1000
367 # define TLS1_RT_CRYPTO_PREMASTER (TLS1_RT_CRYPTO | 0x1)
368 # define TLS1_RT_CRYPTO_CLIENT_RANDOM (TLS1_RT_CRYPTO | 0x2)
369 # define TLS1_RT_CRYPTO_SERVER_RANDOM (TLS1_RT_CRYPTO | 0x3)
370 # define TLS1_RT_CRYPTO_MASTER (TLS1_RT_CRYPTO | 0x4)
372 # define TLS1_RT_CRYPTO_READ 0x0000
373 # define TLS1_RT_CRYPTO_WRITE 0x0100
374 # define TLS1_RT_CRYPTO_MAC (TLS1_RT_CRYPTO | 0x5)
375 # define TLS1_RT_CRYPTO_KEY (TLS1_RT_CRYPTO | 0x6)
376 # define TLS1_RT_CRYPTO_IV (TLS1_RT_CRYPTO | 0x7)
377 # define TLS1_RT_CRYPTO_FIXED_IV (TLS1_RT_CRYPTO | 0x8)
379 /* Pseudo content type for SSL/TLS header info */
380 # define SSL3_RT_HEADER 0x100
382 # define SSL3_AL_WARNING 1
383 # define SSL3_AL_FATAL 2
385 # define SSL3_AD_CLOSE_NOTIFY 0
386 # define SSL3_AD_UNEXPECTED_MESSAGE 10/* fatal */
387 # define SSL3_AD_BAD_RECORD_MAC 20/* fatal */
388 # define SSL3_AD_DECOMPRESSION_FAILURE 30/* fatal */
389 # define SSL3_AD_HANDSHAKE_FAILURE 40/* fatal */
390 # define SSL3_AD_NO_CERTIFICATE 41
391 # define SSL3_AD_BAD_CERTIFICATE 42
392 # define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
393 # define SSL3_AD_CERTIFICATE_REVOKED 44
394 # define SSL3_AD_CERTIFICATE_EXPIRED 45
395 # define SSL3_AD_CERTIFICATE_UNKNOWN 46
396 # define SSL3_AD_ILLEGAL_PARAMETER 47/* fatal */
398 # define TLS1_HB_REQUEST 1
399 # define TLS1_HB_RESPONSE 2
401 # ifndef OPENSSL_NO_SSL_INTERN
403 typedef struct ssl3_record_st {
408 /* How many bytes available */
411 */ unsigned int length;
413 * How many bytes were available before padding was removed? This is used
414 * to implement the MAC check in constant time for CBC records.
418 */ unsigned int orig_len;
419 /* read/write offset into 'buf' */
423 /* pointer to the record data */
426 */ unsigned char *data;
427 /* where the decode bytes are */
430 */ unsigned char *input;
431 /* only used with decompression - malloc()ed */
434 */ unsigned char *comp;
435 /* epoch number, needed by DTLS1 */
438 */ unsigned long epoch;
439 /* sequence number, needed by DTLS1 */
442 */ unsigned char seq_num[8];
445 typedef struct ssl3_buffer_st {
446 /* at least SSL3_RT_MAX_PACKET_SIZE bytes, see ssl3_setup_buffers() */
450 /* where to 'copy from' */
452 /* how many bytes left */
458 # define SSL3_CT_RSA_SIGN 1
459 # define SSL3_CT_DSS_SIGN 2
460 # define SSL3_CT_RSA_FIXED_DH 3
461 # define SSL3_CT_DSS_FIXED_DH 4
462 # define SSL3_CT_RSA_EPHEMERAL_DH 5
463 # define SSL3_CT_DSS_EPHEMERAL_DH 6
464 # define SSL3_CT_FORTEZZA_DMS 20
466 * SSL3_CT_NUMBER is used to size arrays and it must be large enough to
467 * contain all of the cert types defined either for SSLv3 and TLSv1.
469 # define SSL3_CT_NUMBER 9
471 # define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001
472 # define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002
473 # define SSL3_FLAGS_POP_BUFFER 0x0004
474 # define TLS1_FLAGS_TLS_PADDING_BUG 0x0008
475 # define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010
476 # define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020
478 * Set when the handshake is ready to process peer's ChangeCipherSpec message.
479 * Cleared after the message has been processed.
481 # define SSL3_FLAGS_CCS_OK 0x0080
483 /* Set if we encrypt then mac instead of usual mac then encrypt */
484 # define TLS1_FLAGS_ENCRYPT_THEN_MAC 0x0100
486 # ifndef OPENSSL_NO_SSL_INTERN
488 typedef struct ssl3_state_st {
490 int delay_buf_pop_ret;
491 unsigned char read_sequence[8];
492 int read_mac_secret_size;
493 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
494 unsigned char write_sequence[8];
495 int write_mac_secret_size;
496 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
497 unsigned char server_random[SSL3_RANDOM_SIZE];
498 unsigned char client_random[SSL3_RANDOM_SIZE];
499 /* flags for countermeasure against known-IV weakness */
500 int need_empty_fragments;
501 int empty_fragment_done;
502 /* The value of 'extra' when the buffers were initialized */
504 SSL3_BUFFER rbuf; /* read IO goes into here */
505 SSL3_BUFFER wbuf; /* write IO goes into here */
506 SSL3_RECORD rrec; /* each decoded record goes in here */
507 SSL3_RECORD wrec; /* goes out from here */
509 * storage for Alert/Handshake protocol data received but not yet
510 * processed by ssl3_read_bytes:
512 unsigned char alert_fragment[2];
513 unsigned int alert_fragment_len;
514 unsigned char handshake_fragment[4];
515 unsigned int handshake_fragment_len;
516 /* partial write - check the numbers match */
517 unsigned int wnum; /* number of bytes sent so far */
518 int wpend_tot; /* number bytes written */
520 int wpend_ret; /* number of bytes submitted */
521 const unsigned char *wpend_buf;
522 /* used during startup, digest all incoming/outgoing packets */
523 BIO *handshake_buffer;
525 * When set of handshake digests is determined, buffer is hashed and
526 * freed and MD_CTX-es for all required digests are stored in this array
528 EVP_MD_CTX **handshake_dgst;
530 * Set whenever an expected ChangeCipherSpec message is processed.
531 * Unset when the peer's Finished message is received.
532 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
534 int change_cipher_spec;
538 * we allow one fatal and one warning alert to be outstanding, send close
539 * alert via the warning alert
542 unsigned char send_alert[2];
544 * This flag is set when we should renegotiate ASAP, basically when there
545 * is no more data in the read or write buffers
548 int total_renegotiations;
549 int num_renegotiations;
550 int in_read_app_data;
552 * Opaque PRF input as used for the current handshake. These fields are
553 * used only if TLSEXT_TYPE_opaque_prf_input is defined (otherwise, they
554 * are merely present to improve binary compatibility)
556 void *client_opaque_prf_input;
557 size_t client_opaque_prf_input_len;
558 void *server_opaque_prf_input;
559 size_t server_opaque_prf_input_len;
561 /* actually only needs to be 16+20 */
562 unsigned char cert_verify_md[EVP_MAX_MD_SIZE * 2];
563 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
564 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
566 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
567 int peer_finish_md_len;
568 unsigned long message_size;
570 /* used to hold the new cipher we are going to use */
571 const SSL_CIPHER *new_cipher;
572 # ifndef OPENSSL_NO_DH
575 # ifndef OPENSSL_NO_ECDH
576 EC_KEY *ecdh; /* holds short lived ECDH key */
578 /* used when SSL_ST_FLUSH_DATA is entered */
581 /* used for certificate requests */
584 char ctype[SSL3_CT_NUMBER];
585 STACK_OF(X509_NAME) *ca_names;
587 int key_block_length;
588 unsigned char *key_block;
589 const EVP_CIPHER *new_sym_enc;
590 const EVP_MD *new_hash;
591 int new_mac_pkey_type;
592 int new_mac_secret_size;
593 # ifndef OPENSSL_NO_COMP
594 const SSL_COMP *new_compression;
596 char *new_compression;
601 /* Connection binding to prevent renegotiation attacks */
602 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
603 unsigned char previous_client_finished_len;
604 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
605 unsigned char previous_server_finished_len;
606 int send_connection_binding; /* TODOEKR */
608 # ifndef OPENSSL_NO_NEXTPROTONEG
610 * Set if we saw the Next Protocol Negotiation extension from our peer.
612 int next_proto_neg_seen;
615 # ifndef OPENSSL_NO_TLSEXT
618 * ALPN information (we are in the process of transitioning from NPN to
623 * In a server these point to the selected ALPN protocol after the
624 * ClientHello has been processed. In a client these contain the protocol
625 * that the server selected once the ServerHello has been processed.
627 unsigned char *alpn_selected;
628 unsigned alpn_selected_len;
630 # ifndef OPENSSL_NO_EC
632 * This is set to true if we believe that this is a version of Safari
633 * running on OS X 10.6 or newer. We wish to know this because Safari on
634 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
636 char is_probably_safari;
637 # endif /* !OPENSSL_NO_EC */
639 # endif /* !OPENSSL_NO_TLSEXT */
649 # define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT)
650 # ifndef OPENSSL_NO_SCTP
651 # define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT)
652 # define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT)
654 /* write to server */
655 # define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT)
656 # define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT)
657 /* read from server */
658 # define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT)
659 # define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT)
660 # define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
661 # define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
662 # define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT)
663 # define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT)
664 # define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT)
665 # define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT)
666 # define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT)
667 # define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT)
668 # define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT)
669 # define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT)
670 /* write to server */
671 # define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT)
672 # define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT)
673 # define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT)
674 # define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT)
675 # define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT)
676 # define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT)
677 # define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT)
678 # define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT)
679 # define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT)
680 # define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT)
681 # ifndef OPENSSL_NO_NEXTPROTONEG
682 # define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT)
683 # define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT)
685 # define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT)
686 # define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT)
687 /* read from server */
688 # define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT)
689 # define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT)
690 # define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT)
691 # define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT)
692 # define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT)
693 # define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT)
694 # define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT)
695 # define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT)
699 # define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT)
700 # ifndef OPENSSL_NO_SCTP
701 # define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT)
702 # define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT)
704 /* read from client */
705 /* Do not change the number values, they do matter */
706 # define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT)
707 # define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT)
708 # define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT)
709 # define SSL3_ST_SR_CLNT_HELLO_D (0x115|SSL_ST_ACCEPT)
710 /* write to client */
711 # define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
712 # define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
713 # define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT)
714 # define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT)
715 # define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT)
716 # define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT)
717 # define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT)
718 # define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT)
719 # define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT)
720 # define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT)
721 # define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT)
722 # define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT)
723 # define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT)
724 # define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT)
725 # define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT)
726 /* read from client */
727 # define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT)
728 # define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT)
729 # define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT)
730 # define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT)
731 # define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT)
732 # define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT)
733 # define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT)
734 # define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT)
735 # ifndef OPENSSL_NO_NEXTPROTONEG
736 # define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT)
737 # define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT)
739 # define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT)
740 # define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT)
741 /* write to client */
742 # define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT)
743 # define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT)
744 # define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT)
745 # define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT)
746 # define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT)
747 # define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT)
748 # define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT)
749 # define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT)
751 # define SSL3_MT_HELLO_REQUEST 0
752 # define SSL3_MT_CLIENT_HELLO 1
753 # define SSL3_MT_SERVER_HELLO 2
754 # define SSL3_MT_NEWSESSION_TICKET 4
755 # define SSL3_MT_CERTIFICATE 11
756 # define SSL3_MT_SERVER_KEY_EXCHANGE 12
757 # define SSL3_MT_CERTIFICATE_REQUEST 13
758 # define SSL3_MT_SERVER_DONE 14
759 # define SSL3_MT_CERTIFICATE_VERIFY 15
760 # define SSL3_MT_CLIENT_KEY_EXCHANGE 16
761 # define SSL3_MT_FINISHED 20
762 # define SSL3_MT_CERTIFICATE_STATUS 22
763 # ifndef OPENSSL_NO_NEXTPROTONEG
764 # define SSL3_MT_NEXT_PROTO 67
766 # define DTLS1_MT_HELLO_VERIFY_REQUEST 3
768 # define SSL3_MT_CCS 1
770 /* These are used when changing over to a new cipher */
771 # define SSL3_CC_READ 0x01
772 # define SSL3_CC_WRITE 0x02
773 # define SSL3_CC_CLIENT 0x10
774 # define SSL3_CC_SERVER 0x20
775 # define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
776 # define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ)
777 # define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ)
778 # define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)