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>
131 /* Signalling cipher suite value from RFC 5746
132 * (TLS_EMPTY_RENEGOTIATION_INFO_SCSV) */
133 #define SSL3_CK_SCSV 0x030000FF
135 /* Signalling cipher suite value from draft-ietf-tls-downgrade-scsv-00
136 * (TLS_FALLBACK_SCSV) */
137 #define SSL3_CK_FALLBACK_SCSV 0x03005600
139 #define SSL3_CK_RSA_NULL_MD5 0x03000001
140 #define SSL3_CK_RSA_NULL_SHA 0x03000002
141 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003
142 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004
143 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005
144 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006
145 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
146 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
147 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
148 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
150 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
151 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
152 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
153 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
154 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
155 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
157 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
158 #define SSL3_CK_DHE_DSS_DES_40_CBC_SHA SSL3_CK_EDH_DSS_DES_40_CBC_SHA
159 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
160 #define SSL3_CK_DHE_DSS_DES_64_CBC_SHA SSL3_CK_EDH_DSS_DES_64_CBC_SHA
161 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
162 #define SSL3_CK_DHE_DSS_DES_192_CBC3_SHA SSL3_CK_EDH_DSS_DES_192_CBC3_SHA
163 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
164 #define SSL3_CK_DHE_RSA_DES_40_CBC_SHA SSL3_CK_EDH_RSA_DES_40_CBC_SHA
165 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
166 #define SSL3_CK_DHE_RSA_DES_64_CBC_SHA SSL3_CK_EDH_RSA_DES_64_CBC_SHA
167 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
168 #define SSL3_CK_DHE_RSA_DES_192_CBC3_SHA SSL3_CK_EDH_RSA_DES_192_CBC3_SHA
170 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017
171 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018
172 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
173 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
174 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
177 #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
178 #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
179 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
180 to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
181 of the ietf-tls list */
182 #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
186 /* VRS Additional Kerberos5 entries
188 #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E
189 #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F
190 #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020
191 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021
192 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022
193 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023
194 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024
195 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025
197 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026
198 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027
199 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028
200 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029
201 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A
202 #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B
204 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
205 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
206 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
207 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
208 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
209 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
210 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
211 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
212 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
213 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
215 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
216 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
217 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
218 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
219 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
220 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
222 #define SSL3_TXT_DHE_DSS_DES_40_CBC_SHA "EXP-DHE-DSS-DES-CBC-SHA"
223 #define SSL3_TXT_DHE_DSS_DES_64_CBC_SHA "DHE-DSS-DES-CBC-SHA"
224 #define SSL3_TXT_DHE_DSS_DES_192_CBC3_SHA "DHE-DSS-DES-CBC3-SHA"
225 #define SSL3_TXT_DHE_RSA_DES_40_CBC_SHA "EXP-DHE-RSA-DES-CBC-SHA"
226 #define SSL3_TXT_DHE_RSA_DES_64_CBC_SHA "DHE-RSA-DES-CBC-SHA"
227 #define SSL3_TXT_DHE_RSA_DES_192_CBC3_SHA "DHE-RSA-DES-CBC3-SHA"
229 /* This next block of six "EDH" labels is for backward compatibility
230 with older versions of OpenSSL. New code should use the six "DHE"
231 labels above instead:
233 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
234 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
235 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
236 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
237 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
238 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
240 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
241 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
242 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
243 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
244 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
247 #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
248 #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
249 #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
252 #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
253 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
254 #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA"
255 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA"
256 #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5"
257 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5"
258 #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5"
259 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5"
261 #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA"
262 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA"
263 #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA"
264 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5"
265 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5"
266 #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5"
268 #define SSL3_SSL_SESSION_ID_LENGTH 32
269 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
271 #define SSL3_MASTER_SECRET_SIZE 48
272 #define SSL3_RANDOM_SIZE 32
273 #define SSL3_SESSION_ID_SIZE 32
274 #define SSL3_RT_HEADER_LENGTH 5
276 #define SSL3_HM_HEADER_LENGTH 4
278 #ifndef SSL3_ALIGN_PAYLOAD
279 /* Some will argue that this increases memory footprint, but it's
280 * not actually true. Point is that malloc has to return at least
281 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
282 * 3 bytes in either case. Suggested pre-gaping simply moves these
283 * wasted bytes from the end of allocated region to its front,
284 * but makes data payload aligned, which improves performance:-) */
285 # define SSL3_ALIGN_PAYLOAD 8
287 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
288 # error "insane SSL3_ALIGN_PAYLOAD"
289 # undef SSL3_ALIGN_PAYLOAD
293 /* This is the maximum MAC (digest) size used by the SSL library.
294 * Currently maximum of 20 is used by SHA1, but we reserve for
295 * future extension for 512-bit hashes.
298 #define SSL3_RT_MAX_MD_SIZE 64
300 /* Maximum block size used in all ciphersuites. Currently 16 for AES.
303 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
305 #define SSL3_RT_MAX_EXTRA (16384)
307 /* Maximum plaintext length: defined by SSL/TLS standards */
308 #define SSL3_RT_MAX_PLAIN_LENGTH 16384
309 /* Maximum compression overhead: defined by SSL/TLS standards */
310 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
312 /* The standards give a maximum encryption overhead of 1024 bytes.
313 * In practice the value is lower than this. The overhead is the maximum
314 * number of padding bytes (256) plus the mac size.
316 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
318 /* OpenSSL currently only uses a padding length of at most one block so
319 * the send overhead is smaller.
322 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
323 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
325 /* If compression isn't used don't include the compression overhead */
327 #ifdef OPENSSL_NO_COMP
328 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
330 #define SSL3_RT_MAX_COMPRESSED_LENGTH \
331 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
333 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \
334 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
335 #define SSL3_RT_MAX_PACKET_SIZE \
336 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
338 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
339 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
341 #define SSL3_VERSION 0x0300
342 #define SSL3_VERSION_MAJOR 0x03
343 #define SSL3_VERSION_MINOR 0x00
345 #define SSL3_RT_CHANGE_CIPHER_SPEC 20
346 #define SSL3_RT_ALERT 21
347 #define SSL3_RT_HANDSHAKE 22
348 #define SSL3_RT_APPLICATION_DATA 23
349 #define TLS1_RT_HEARTBEAT 24
351 /* Pseudo content types to indicate additional parameters */
352 #define TLS1_RT_CRYPTO 0x1000
353 #define TLS1_RT_CRYPTO_PREMASTER (TLS1_RT_CRYPTO | 0x1)
354 #define TLS1_RT_CRYPTO_CLIENT_RANDOM (TLS1_RT_CRYPTO | 0x2)
355 #define TLS1_RT_CRYPTO_SERVER_RANDOM (TLS1_RT_CRYPTO | 0x3)
356 #define TLS1_RT_CRYPTO_MASTER (TLS1_RT_CRYPTO | 0x4)
358 #define TLS1_RT_CRYPTO_READ 0x0000
359 #define TLS1_RT_CRYPTO_WRITE 0x0100
360 #define TLS1_RT_CRYPTO_MAC (TLS1_RT_CRYPTO | 0x5)
361 #define TLS1_RT_CRYPTO_KEY (TLS1_RT_CRYPTO | 0x6)
362 #define TLS1_RT_CRYPTO_IV (TLS1_RT_CRYPTO | 0x7)
363 #define TLS1_RT_CRYPTO_FIXED_IV (TLS1_RT_CRYPTO | 0x8)
365 /* Pseudo content type for SSL/TLS header info */
366 #define SSL3_RT_HEADER 0x100
368 #define SSL3_AL_WARNING 1
369 #define SSL3_AL_FATAL 2
371 #define SSL3_AD_CLOSE_NOTIFY 0
372 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */
373 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */
374 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */
375 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */
376 #define SSL3_AD_NO_CERTIFICATE 41
377 #define SSL3_AD_BAD_CERTIFICATE 42
378 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
379 #define SSL3_AD_CERTIFICATE_REVOKED 44
380 #define SSL3_AD_CERTIFICATE_EXPIRED 45
381 #define SSL3_AD_CERTIFICATE_UNKNOWN 46
382 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */
384 #define TLS1_HB_REQUEST 1
385 #define TLS1_HB_RESPONSE 2
387 #ifndef OPENSSL_NO_SSL_INTERN
389 typedef struct ssl3_record_st
391 /*r */ int type; /* type of record */
392 /*rw*/ unsigned int length; /* How many bytes available */
393 /*r */ unsigned int off; /* read/write offset into 'buf' */
394 /*rw*/ unsigned char *data; /* pointer to the record data */
395 /*rw*/ unsigned char *input; /* where the decode bytes are */
396 /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
397 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
398 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
401 typedef struct ssl3_buffer_st
403 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
404 * see ssl3_setup_buffers() */
405 size_t len; /* buffer size */
406 int offset; /* where to 'copy from' */
407 int left; /* how many bytes left */
412 #define SSL3_CT_RSA_SIGN 1
413 #define SSL3_CT_DSS_SIGN 2
414 #define SSL3_CT_RSA_FIXED_DH 3
415 #define SSL3_CT_DSS_FIXED_DH 4
416 #define SSL3_CT_RSA_EPHEMERAL_DH 5
417 #define SSL3_CT_DSS_EPHEMERAL_DH 6
418 #define SSL3_CT_FORTEZZA_DMS 20
419 /* SSL3_CT_NUMBER is used to size arrays and it must be large
420 * enough to contain all of the cert types defined either for
423 #define SSL3_CT_NUMBER 9
426 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001
427 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002
428 #define SSL3_FLAGS_POP_BUFFER 0x0004
429 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008
430 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010
431 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020
433 * Set when the handshake is ready to process peer's ChangeCipherSpec message.
434 * Cleared after the message has been processed.
436 #define SSL3_FLAGS_CCS_OK 0x0080
438 /* SSL3_FLAGS_SGC_RESTART_DONE is no longer used */
439 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040
441 #ifndef OPENSSL_NO_SSL_INTERN
443 typedef struct ssl3_state_st
446 int delay_buf_pop_ret;
448 unsigned char read_sequence[8];
449 int read_mac_secret_size;
450 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
451 unsigned char write_sequence[8];
452 int write_mac_secret_size;
453 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
455 unsigned char server_random[SSL3_RANDOM_SIZE];
456 unsigned char client_random[SSL3_RANDOM_SIZE];
458 /* flags for countermeasure against known-IV weakness */
459 int need_empty_fragments;
460 int empty_fragment_done;
462 /* The value of 'extra' when the buffers were initialized */
465 SSL3_BUFFER rbuf; /* read IO goes into here */
466 SSL3_BUFFER wbuf; /* write IO goes into here */
468 SSL3_RECORD rrec; /* each decoded record goes in here */
469 SSL3_RECORD wrec; /* goes out from here */
471 /* storage for Alert/Handshake protocol data received but not
472 * yet processed by ssl3_read_bytes: */
473 unsigned char alert_fragment[2];
474 unsigned int alert_fragment_len;
475 unsigned char handshake_fragment[4];
476 unsigned int handshake_fragment_len;
478 /* partial write - check the numbers match */
479 unsigned int wnum; /* number of bytes sent so far */
480 int wpend_tot; /* number bytes written */
482 int wpend_ret; /* number of bytes submitted */
483 const unsigned char *wpend_buf;
485 /* used during startup, digest all incoming/outgoing packets */
486 BIO *handshake_buffer;
487 /* When set of handshake digests is determined, buffer is hashed
488 * and freed and MD_CTX-es for all required digests are stored in
490 EVP_MD_CTX **handshake_dgst;
492 * Set whenever an expected ChangeCipherSpec message is processed.
493 * Unset when the peer's Finished message is received.
494 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
496 int change_cipher_spec;
500 /* we allow one fatal and one warning alert to be outstanding,
501 * send close alert via the warning alert */
503 unsigned char send_alert[2];
505 /* This flag is set when we should renegotiate ASAP, basically when
506 * there is no more data in the read or write buffers */
508 int total_renegotiations;
509 int num_renegotiations;
511 int in_read_app_data;
513 /* Opaque PRF input as used for the current handshake.
514 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined
515 * (otherwise, they are merely present to improve binary compatibility) */
516 void *client_opaque_prf_input;
517 size_t client_opaque_prf_input_len;
518 void *server_opaque_prf_input;
519 size_t server_opaque_prf_input_len;
522 /* actually only needs to be 16+20 */
523 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
525 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
526 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
528 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
529 int peer_finish_md_len;
531 unsigned long message_size;
534 /* used to hold the new cipher we are going to use */
535 const SSL_CIPHER *new_cipher;
536 #ifndef OPENSSL_NO_DH
540 #ifndef OPENSSL_NO_ECDH
541 EC_KEY *ecdh; /* holds short lived ECDH key */
544 /* used when SSL_ST_FLUSH_DATA is entered */
549 /* used for certificate requests */
552 char ctype[SSL3_CT_NUMBER];
553 STACK_OF(X509_NAME) *ca_names;
557 int key_block_length;
558 unsigned char *key_block;
560 const EVP_CIPHER *new_sym_enc;
561 const EVP_MD *new_hash;
562 int new_mac_pkey_type;
563 int new_mac_secret_size;
564 #ifndef OPENSSL_NO_COMP
565 const SSL_COMP *new_compression;
567 char *new_compression;
572 /* Connection binding to prevent renegotiation attacks */
573 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
574 unsigned char previous_client_finished_len;
575 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
576 unsigned char previous_server_finished_len;
577 int send_connection_binding; /* TODOEKR */
579 #ifndef OPENSSL_NO_NEXTPROTONEG
580 /* Set if we saw the Next Protocol Negotiation extension from our peer. */
581 int next_proto_neg_seen;
584 #ifndef OPENSSL_NO_TLSEXT
585 #ifndef OPENSSL_NO_EC
586 /* This is set to true if we believe that this is a version of Safari
587 * running on OS X 10.6 or newer. We wish to know this because Safari
588 * on 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. */
589 char is_probably_safari;
590 #endif /* !OPENSSL_NO_EC */
593 * (we are in the process of transitioning from NPN to ALPN.) */
595 /* In a server these point to the selected ALPN protocol after the
596 * ClientHello has been processed. In a client these contain the
597 * protocol that the server selected once the ServerHello has been
599 unsigned char *alpn_selected;
600 unsigned alpn_selected_len;
601 #endif /* OPENSSL_NO_TLSEXT */
609 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT)
610 #ifndef OPENSSL_NO_SCTP
611 #define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT)
612 #define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT)
614 /* write to server */
615 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT)
616 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT)
617 /* read from server */
618 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT)
619 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT)
620 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
621 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
622 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT)
623 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT)
624 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT)
625 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT)
626 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT)
627 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT)
628 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT)
629 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT)
630 /* write to server */
631 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT)
632 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT)
633 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT)
634 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT)
635 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT)
636 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT)
637 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT)
638 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT)
639 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT)
640 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT)
641 #ifndef OPENSSL_NO_NEXTPROTONEG
642 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT)
643 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT)
645 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT)
646 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT)
647 /* read from server */
648 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT)
649 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT)
650 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT)
651 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT)
652 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT)
653 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT)
654 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT)
655 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT)
659 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT)
660 #ifndef OPENSSL_NO_SCTP
661 #define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT)
662 #define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT)
664 /* read from client */
665 /* Do not change the number values, they do matter */
666 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT)
667 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT)
668 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT)
669 #define SSL3_ST_SR_CLNT_HELLO_D (0x115|SSL_ST_ACCEPT)
670 /* write to client */
671 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
672 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
673 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT)
674 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT)
675 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT)
676 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT)
677 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT)
678 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT)
679 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT)
680 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT)
681 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT)
682 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT)
683 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT)
684 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT)
685 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT)
686 /* read from client */
687 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT)
688 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT)
689 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT)
690 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT)
691 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT)
692 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT)
693 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT)
694 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT)
695 #ifndef OPENSSL_NO_NEXTPROTONEG
696 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT)
697 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT)
699 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT)
700 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT)
701 /* write to client */
702 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT)
703 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT)
704 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT)
705 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT)
706 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT)
707 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT)
708 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT)
709 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT)
711 #define SSL3_MT_HELLO_REQUEST 0
712 #define SSL3_MT_CLIENT_HELLO 1
713 #define SSL3_MT_SERVER_HELLO 2
714 #define SSL3_MT_NEWSESSION_TICKET 4
715 #define SSL3_MT_CERTIFICATE 11
716 #define SSL3_MT_SERVER_KEY_EXCHANGE 12
717 #define SSL3_MT_CERTIFICATE_REQUEST 13
718 #define SSL3_MT_SERVER_DONE 14
719 #define SSL3_MT_CERTIFICATE_VERIFY 15
720 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16
721 #define SSL3_MT_FINISHED 20
722 #define SSL3_MT_CERTIFICATE_STATUS 22
723 #ifndef OPENSSL_NO_NEXTPROTONEG
724 #define SSL3_MT_NEXT_PROTO 67
726 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3
729 #define SSL3_MT_CCS 1
731 /* These are used when changing over to a new cipher */
732 #define SSL3_CC_READ 0x01
733 #define SSL3_CC_WRITE 0x02
734 #define SSL3_CC_CLIENT 0x10
735 #define SSL3_CC_SERVER 0x20
736 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
737 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ)
738 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ)
739 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)