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_EDH_DSS_DES_64_CBC_SHA 0x03000012
159 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
160 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
161 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
162 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
164 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017
165 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018
166 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
167 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
168 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
171 #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
172 #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
173 #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
174 to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
175 of the ietf-tls list */
176 #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
180 /* VRS Additional Kerberos5 entries
182 #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E
183 #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F
184 #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020
185 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021
186 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022
187 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023
188 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024
189 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025
191 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026
192 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027
193 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028
194 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029
195 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A
196 #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B
198 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
199 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
200 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
201 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
202 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
203 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
204 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
205 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
206 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
207 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
209 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
210 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
211 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
212 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
213 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
214 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
216 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
217 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
218 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
219 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
220 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
221 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
223 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
224 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
225 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
226 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
227 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
230 #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
231 #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
232 #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
235 #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
236 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
237 #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA"
238 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA"
239 #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5"
240 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5"
241 #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5"
242 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5"
244 #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA"
245 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA"
246 #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA"
247 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5"
248 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5"
249 #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5"
251 #define SSL3_SSL_SESSION_ID_LENGTH 32
252 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
254 #define SSL3_MASTER_SECRET_SIZE 48
255 #define SSL3_RANDOM_SIZE 32
256 #define SSL3_SESSION_ID_SIZE 32
257 #define SSL3_RT_HEADER_LENGTH 5
259 #define SSL3_HM_HEADER_LENGTH 4
261 #ifndef SSL3_ALIGN_PAYLOAD
262 /* Some will argue that this increases memory footprint, but it's
263 * not actually true. Point is that malloc has to return at least
264 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
265 * 3 bytes in either case. Suggested pre-gaping simply moves these
266 * wasted bytes from the end of allocated region to its front,
267 * but makes data payload aligned, which improves performance:-) */
268 # define SSL3_ALIGN_PAYLOAD 8
270 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
271 # error "insane SSL3_ALIGN_PAYLOAD"
272 # undef SSL3_ALIGN_PAYLOAD
276 /* This is the maximum MAC (digest) size used by the SSL library.
277 * Currently maximum of 20 is used by SHA1, but we reserve for
278 * future extension for 512-bit hashes.
281 #define SSL3_RT_MAX_MD_SIZE 64
283 /* Maximum block size used in all ciphersuites. Currently 16 for AES.
286 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
288 #define SSL3_RT_MAX_EXTRA (16384)
290 /* Maximum plaintext length: defined by SSL/TLS standards */
291 #define SSL3_RT_MAX_PLAIN_LENGTH 16384
292 /* Maximum compression overhead: defined by SSL/TLS standards */
293 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
295 /* The standards give a maximum encryption overhead of 1024 bytes.
296 * In practice the value is lower than this. The overhead is the maximum
297 * number of padding bytes (256) plus the mac size.
299 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
301 /* OpenSSL currently only uses a padding length of at most one block so
302 * the send overhead is smaller.
305 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
306 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
308 /* If compression isn't used don't include the compression overhead */
310 #ifdef OPENSSL_NO_COMP
311 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
313 #define SSL3_RT_MAX_COMPRESSED_LENGTH \
314 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
316 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \
317 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
318 #define SSL3_RT_MAX_PACKET_SIZE \
319 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
321 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
322 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
324 #define SSL3_VERSION 0x0300
325 #define SSL3_VERSION_MAJOR 0x03
326 #define SSL3_VERSION_MINOR 0x00
328 #define SSL3_RT_CHANGE_CIPHER_SPEC 20
329 #define SSL3_RT_ALERT 21
330 #define SSL3_RT_HANDSHAKE 22
331 #define SSL3_RT_APPLICATION_DATA 23
332 #define TLS1_RT_HEARTBEAT 24
334 /* Pseudo content types to indicate additional parameters */
335 #define TLS1_RT_CRYPTO 0x1000
336 #define TLS1_RT_CRYPTO_PREMASTER (TLS1_RT_CRYPTO | 0x1)
337 #define TLS1_RT_CRYPTO_CLIENT_RANDOM (TLS1_RT_CRYPTO | 0x2)
338 #define TLS1_RT_CRYPTO_SERVER_RANDOM (TLS1_RT_CRYPTO | 0x3)
339 #define TLS1_RT_CRYPTO_MASTER (TLS1_RT_CRYPTO | 0x4)
341 #define TLS1_RT_CRYPTO_READ 0x0000
342 #define TLS1_RT_CRYPTO_WRITE 0x0100
343 #define TLS1_RT_CRYPTO_MAC (TLS1_RT_CRYPTO | 0x5)
344 #define TLS1_RT_CRYPTO_KEY (TLS1_RT_CRYPTO | 0x6)
345 #define TLS1_RT_CRYPTO_IV (TLS1_RT_CRYPTO | 0x7)
346 #define TLS1_RT_CRYPTO_FIXED_IV (TLS1_RT_CRYPTO | 0x8)
348 /* Pseudo content type for SSL/TLS header info */
349 #define SSL3_RT_HEADER 0x100
351 #define SSL3_AL_WARNING 1
352 #define SSL3_AL_FATAL 2
354 #define SSL3_AD_CLOSE_NOTIFY 0
355 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */
356 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */
357 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */
358 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */
359 #define SSL3_AD_NO_CERTIFICATE 41
360 #define SSL3_AD_BAD_CERTIFICATE 42
361 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
362 #define SSL3_AD_CERTIFICATE_REVOKED 44
363 #define SSL3_AD_CERTIFICATE_EXPIRED 45
364 #define SSL3_AD_CERTIFICATE_UNKNOWN 46
365 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */
367 #define TLS1_HB_REQUEST 1
368 #define TLS1_HB_RESPONSE 2
370 #ifndef OPENSSL_NO_SSL_INTERN
372 typedef struct ssl3_record_st
374 /*r */ int type; /* type of record */
375 /*rw*/ unsigned int length; /* How many bytes available */
376 /*r */ unsigned int off; /* read/write offset into 'buf' */
377 /*rw*/ unsigned char *data; /* pointer to the record data */
378 /*rw*/ unsigned char *input; /* where the decode bytes are */
379 /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
380 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
381 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
384 typedef struct ssl3_buffer_st
386 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
387 * see ssl3_setup_buffers() */
388 size_t len; /* buffer size */
389 int offset; /* where to 'copy from' */
390 int left; /* how many bytes left */
395 #define SSL3_CT_RSA_SIGN 1
396 #define SSL3_CT_DSS_SIGN 2
397 #define SSL3_CT_RSA_FIXED_DH 3
398 #define SSL3_CT_DSS_FIXED_DH 4
399 #define SSL3_CT_RSA_EPHEMERAL_DH 5
400 #define SSL3_CT_DSS_EPHEMERAL_DH 6
401 #define SSL3_CT_FORTEZZA_DMS 20
402 /* SSL3_CT_NUMBER is used to size arrays and it must be large
403 * enough to contain all of the cert types defined either for
406 #define SSL3_CT_NUMBER 9
409 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001
410 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002
411 #define SSL3_FLAGS_POP_BUFFER 0x0004
412 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008
413 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010
414 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020
415 #define SSL3_FLAGS_CCS_OK 0x0080
417 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we
418 * restart a handshake because of MS SGC and so prevents us
419 * from restarting the handshake in a loop. It's reset on a
420 * renegotiation, so effectively limits the client to one restart
421 * per negotiation. This limits the possibility of a DDoS
422 * attack where the client handshakes in a loop using SGC to
423 * restart. Servers which permit renegotiation can still be
424 * effected, but we can't prevent that.
426 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040
428 #ifndef OPENSSL_NO_SSL_INTERN
430 typedef struct ssl3_state_st
433 int delay_buf_pop_ret;
435 unsigned char read_sequence[8];
436 int read_mac_secret_size;
437 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
438 unsigned char write_sequence[8];
439 int write_mac_secret_size;
440 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
442 unsigned char server_random[SSL3_RANDOM_SIZE];
443 unsigned char client_random[SSL3_RANDOM_SIZE];
445 /* flags for countermeasure against known-IV weakness */
446 int need_empty_fragments;
447 int empty_fragment_done;
449 /* The value of 'extra' when the buffers were initialized */
452 SSL3_BUFFER rbuf; /* read IO goes into here */
453 SSL3_BUFFER wbuf; /* write IO goes into here */
455 SSL3_RECORD rrec; /* each decoded record goes in here */
456 SSL3_RECORD wrec; /* goes out from here */
458 /* storage for Alert/Handshake protocol data received but not
459 * yet processed by ssl3_read_bytes: */
460 unsigned char alert_fragment[2];
461 unsigned int alert_fragment_len;
462 unsigned char handshake_fragment[4];
463 unsigned int handshake_fragment_len;
465 /* partial write - check the numbers match */
466 unsigned int wnum; /* number of bytes sent so far */
467 int wpend_tot; /* number bytes written */
469 int wpend_ret; /* number of bytes submitted */
470 const unsigned char *wpend_buf;
472 /* used during startup, digest all incoming/outgoing packets */
473 BIO *handshake_buffer;
474 /* When set of handshake digests is determined, buffer is hashed
475 * and freed and MD_CTX-es for all required digests are stored in
477 EVP_MD_CTX **handshake_dgst;
478 /* this is set whenerver we see a change_cipher_spec message
479 * come in when we are not looking for one */
480 int change_cipher_spec;
484 /* we allow one fatal and one warning alert to be outstanding,
485 * send close alert via the warning alert */
487 unsigned char send_alert[2];
489 /* This flag is set when we should renegotiate ASAP, basically when
490 * there is no more data in the read or write buffers */
492 int total_renegotiations;
493 int num_renegotiations;
495 int in_read_app_data;
497 /* Opaque PRF input as used for the current handshake.
498 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined
499 * (otherwise, they are merely present to improve binary compatibility) */
500 void *client_opaque_prf_input;
501 size_t client_opaque_prf_input_len;
502 void *server_opaque_prf_input;
503 size_t server_opaque_prf_input_len;
506 /* actually only needs to be 16+20 */
507 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
509 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
510 unsigned char finish_md[EVP_MAX_MD_SIZE*2];
512 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
513 int peer_finish_md_len;
515 unsigned long message_size;
518 /* used to hold the new cipher we are going to use */
519 const SSL_CIPHER *new_cipher;
520 #ifndef OPENSSL_NO_DH
524 #ifndef OPENSSL_NO_ECDH
525 EC_KEY *ecdh; /* holds short lived ECDH key */
528 /* used when SSL_ST_FLUSH_DATA is entered */
533 /* used for certificate requests */
536 char ctype[SSL3_CT_NUMBER];
537 STACK_OF(X509_NAME) *ca_names;
541 int key_block_length;
542 unsigned char *key_block;
544 const EVP_CIPHER *new_sym_enc;
545 const EVP_MD *new_hash;
546 int new_mac_pkey_type;
547 int new_mac_secret_size;
548 #ifndef OPENSSL_NO_COMP
549 const SSL_COMP *new_compression;
551 char *new_compression;
556 /* Connection binding to prevent renegotiation attacks */
557 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
558 unsigned char previous_client_finished_len;
559 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
560 unsigned char previous_server_finished_len;
561 int send_connection_binding; /* TODOEKR */
563 #ifndef OPENSSL_NO_NEXTPROTONEG
564 /* Set if we saw the Next Protocol Negotiation extension from our peer. */
565 int next_proto_neg_seen;
568 #ifndef OPENSSL_NO_TLSEXT
569 #ifndef OPENSSL_NO_EC
570 /* This is set to true if we believe that this is a version of Safari
571 * running on OS X 10.6 or newer. We wish to know this because Safari
572 * on 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. */
573 char is_probably_safari;
574 #endif /* !OPENSSL_NO_EC */
577 * (we are in the process of transitioning from NPN to ALPN.) */
579 /* In a server these point to the selected ALPN protocol after the
580 * ClientHello has been processed. In a client these contain the
581 * protocol that the server selected once the ServerHello has been
583 unsigned char *alpn_selected;
584 unsigned alpn_selected_len;
585 #endif /* OPENSSL_NO_TLSEXT */
593 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT)
594 #ifndef OPENSSL_NO_SCTP
595 #define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT)
596 #define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT)
598 /* write to server */
599 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT)
600 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT)
601 /* read from server */
602 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT)
603 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT)
604 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
605 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
606 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT)
607 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT)
608 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT)
609 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT)
610 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT)
611 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT)
612 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT)
613 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT)
614 /* write to server */
615 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT)
616 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT)
617 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT)
618 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT)
619 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT)
620 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT)
621 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT)
622 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT)
623 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT)
624 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT)
625 #ifndef OPENSSL_NO_NEXTPROTONEG
626 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT)
627 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT)
629 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT)
630 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT)
631 /* read from server */
632 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT)
633 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT)
634 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT)
635 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT)
636 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT)
637 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT)
638 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT)
639 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT)
643 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT)
644 #ifndef OPENSSL_NO_SCTP
645 #define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT)
646 #define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT)
648 /* read from client */
649 /* Do not change the number values, they do matter */
650 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT)
651 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT)
652 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT)
653 #define SSL3_ST_SR_CLNT_HELLO_D (0x115|SSL_ST_ACCEPT)
654 /* write to client */
655 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
656 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
657 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT)
658 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT)
659 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT)
660 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT)
661 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT)
662 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT)
663 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT)
664 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT)
665 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT)
666 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT)
667 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT)
668 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT)
669 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT)
670 /* read from client */
671 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT)
672 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT)
673 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT)
674 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT)
675 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT)
676 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT)
677 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT)
678 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT)
679 #ifndef OPENSSL_NO_NEXTPROTONEG
680 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT)
681 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT)
683 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT)
684 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT)
685 /* write to client */
686 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT)
687 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT)
688 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT)
689 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT)
690 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT)
691 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT)
692 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT)
693 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT)
695 #define SSL3_MT_HELLO_REQUEST 0
696 #define SSL3_MT_CLIENT_HELLO 1
697 #define SSL3_MT_SERVER_HELLO 2
698 #define SSL3_MT_NEWSESSION_TICKET 4
699 #define SSL3_MT_CERTIFICATE 11
700 #define SSL3_MT_SERVER_KEY_EXCHANGE 12
701 #define SSL3_MT_CERTIFICATE_REQUEST 13
702 #define SSL3_MT_SERVER_DONE 14
703 #define SSL3_MT_CERTIFICATE_VERIFY 15
704 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16
705 #define SSL3_MT_FINISHED 20
706 #define SSL3_MT_CERTIFICATE_STATUS 22
707 #ifndef OPENSSL_NO_NEXTPROTONEG
708 #define SSL3_MT_NEXT_PROTO 67
710 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3
713 #define SSL3_MT_CCS 1
715 /* These are used when changing over to a new cipher */
716 #define SSL3_CC_READ 0x01
717 #define SSL3_CC_WRITE 0x02
718 #define SSL3_CC_CLIENT 0x10
719 #define SSL3_CC_SERVER 0x20
720 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
721 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ)
722 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ)
723 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)