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) 1998-2007 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.
116 /* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
143 #ifndef HEADER_SSL_LOCL_H
144 # define HEADER_SSL_LOCL_H
152 # include <openssl/buffer.h>
153 # ifndef OPENSSL_NO_COMP
154 # include <openssl/comp.h>
156 # include <openssl/bio.h>
157 # include <openssl/stack.h>
158 # ifndef OPENSSL_NO_RSA
159 # include <openssl/rsa.h>
161 # ifndef OPENSSL_NO_DSA
162 # include <openssl/dsa.h>
164 # include <openssl/err.h>
165 # include <openssl/ssl.h>
166 # include <openssl/async.h>
167 # include <openssl/symhacks.h>
169 #include "record/record.h"
170 #include "statem/statem.h"
171 #include "packet_locl.h"
172 #include "internal/dane.h"
174 # ifdef OPENSSL_BUILD_SHLIBSSL
175 # undef OPENSSL_EXTERN
176 # define OPENSSL_EXTERN OPENSSL_EXPORT
181 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
182 l|=(((unsigned long)(*((c)++)))<< 8), \
183 l|=(((unsigned long)(*((c)++)))<<16), \
184 l|=(((unsigned long)(*((c)++)))<<24))
186 /* NOTE - c is not incremented as per c2l */
187 # define c2ln(c,l1,l2,n) { \
191 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
192 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
193 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
194 case 5: l2|=((unsigned long)(*(--(c)))); \
195 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
196 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
197 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
198 case 1: l1|=((unsigned long)(*(--(c)))); \
202 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
203 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
204 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
205 *((c)++)=(unsigned char)(((l)>>24)&0xff))
207 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
208 l|=((unsigned long)(*((c)++)))<<16, \
209 l|=((unsigned long)(*((c)++)))<< 8, \
210 l|=((unsigned long)(*((c)++))))
212 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
213 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
214 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
215 *((c)++)=(unsigned char)(((l) )&0xff))
217 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
218 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
219 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
220 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
221 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
222 *((c)++)=(unsigned char)(((l) )&0xff))
224 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
225 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
226 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
227 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
228 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
229 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
230 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
231 *((c)++)=(unsigned char)(((l) )&0xff))
233 # define n2l6(c,l) (l =((BN_ULLONG)(*((c)++)))<<40, \
234 l|=((BN_ULLONG)(*((c)++)))<<32, \
235 l|=((BN_ULLONG)(*((c)++)))<<24, \
236 l|=((BN_ULLONG)(*((c)++)))<<16, \
237 l|=((BN_ULLONG)(*((c)++)))<< 8, \
238 l|=((BN_ULLONG)(*((c)++))))
240 /* NOTE - c is not incremented as per l2c */
241 # define l2cn(l1,l2,c,n) { \
244 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
245 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
246 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
247 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
248 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
249 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
250 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
251 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
255 # define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
256 (((unsigned int)(c[1])) )),c+=2)
257 # define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
258 c[1]=(unsigned char)(((s) )&0xff)),c+=2)
260 # define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
261 (((unsigned long)(c[1]))<< 8)| \
262 (((unsigned long)(c[2])) )),c+=3)
264 # define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
265 c[1]=(unsigned char)(((l)>> 8)&0xff), \
266 c[2]=(unsigned char)(((l) )&0xff)),c+=3)
268 #define DTLS_VERSION_GT(v1, v2) ((v1) < (v2))
269 #define DTLS_VERSION_GE(v1, v2) ((v1) <= (v2))
270 #define DTLS_VERSION_LT(v1, v2) ((v1) > (v2))
271 #define DTLS_VERSION_LE(v1, v2) ((v1) >= (v2))
275 # define SSL_DECRYPT 0
276 # define SSL_ENCRYPT 1
278 # define TWO_BYTE_BIT 0x80
279 # define SEC_ESC_BIT 0x40
280 # define TWO_BYTE_MASK 0x7fff
281 # define THREE_BYTE_MASK 0x3fff
283 # define INC32(a) ((a)=((a)+1)&0xffffffffL)
284 # define DEC32(a) ((a)=((a)-1)&0xffffffffL)
285 # define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
288 * Define the Bitmasks for SSL_CIPHER.algorithms.
289 * This bits are used packed as dense as possible. If new methods/ciphers
290 * etc will be added, the bits a likely to change, so this information
291 * is for internal library use only, even though SSL_CIPHER.algorithms
292 * can be publicly accessed.
293 * Use the according functions for cipher management instead.
295 * The bit mask handling in the selection and sorting scheme in
296 * ssl_create_cipher_list() has only limited capabilities, reflecting
297 * that the different entities within are mutually exclusive:
298 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
301 /* Bits for algorithm_mkey (key exchange algorithm) */
302 /* RSA key exchange */
303 # define SSL_kRSA 0x00000001U
304 /* tmp DH key no DH cert */
305 # define SSL_kDHE 0x00000002U
307 # define SSL_kEDH SSL_kDHE
308 /* ECDH cert, RSA CA cert */
309 # define SSL_kECDHr 0x00000004U
310 /* ECDH cert, ECDSA CA cert */
311 # define SSL_kECDHe 0x00000008U
313 # define SSL_kECDHE 0x00000010U
315 # define SSL_kEECDH SSL_kECDHE
317 # define SSL_kPSK 0x00000020U
318 /* GOST key exchange */
319 # define SSL_kGOST 0x00000040U
321 # define SSL_kSRP 0x00000080U
323 # define SSL_kRSAPSK 0x00000100U
324 # define SSL_kECDHEPSK 0x00000200U
325 # define SSL_kDHEPSK 0x00000400U
329 #define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
331 /* Bits for algorithm_auth (server authentication) */
333 # define SSL_aRSA 0x00000001U
335 # define SSL_aDSS 0x00000002U
336 /* no auth (i.e. use ADH or AECDH) */
337 # define SSL_aNULL 0x00000004U
338 /* Fixed ECDH auth (kECDHe or kECDHr) */
339 # define SSL_aECDH 0x00000008U
341 # define SSL_aECDSA 0x00000010U
343 # define SSL_aPSK 0x00000020U
344 /* GOST R 34.10-2001 signature auth */
345 # define SSL_aGOST01 0x00000040U
347 # define SSL_aSRP 0x00000080U
348 /* GOST R 34.10-2012 signature auth */
349 # define SSL_aGOST12 0x00000100U
351 /* Bits for algorithm_enc (symmetric encryption) */
352 # define SSL_DES 0x00000001U
353 # define SSL_3DES 0x00000002U
354 # define SSL_RC4 0x00000004U
355 # define SSL_RC2 0x00000008U
356 # define SSL_IDEA 0x00000010U
357 # define SSL_eNULL 0x00000020U
358 # define SSL_AES128 0x00000040U
359 # define SSL_AES256 0x00000080U
360 # define SSL_CAMELLIA128 0x00000100U
361 # define SSL_CAMELLIA256 0x00000200U
362 # define SSL_eGOST2814789CNT 0x00000400U
363 # define SSL_SEED 0x00000800U
364 # define SSL_AES128GCM 0x00001000U
365 # define SSL_AES256GCM 0x00002000U
366 # define SSL_AES128CCM 0x00004000U
367 # define SSL_AES256CCM 0x00008000U
368 # define SSL_AES128CCM8 0x00010000U
369 # define SSL_AES256CCM8 0x00020000U
370 # define SSL_eGOST2814789CNT12 0x00040000U
371 # define SSL_CHACHA20POLY1305 0x00080000U
373 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM|SSL_AES128CCM|SSL_AES256CCM|SSL_AES128CCM8|SSL_AES256CCM8)
374 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
376 /* Bits for algorithm_mac (symmetric authentication) */
378 # define SSL_MD5 0x00000001U
379 # define SSL_SHA1 0x00000002U
380 # define SSL_GOST94 0x00000004U
381 # define SSL_GOST89MAC 0x00000008U
382 # define SSL_SHA256 0x00000010U
383 # define SSL_SHA384 0x00000020U
384 /* Not a real MAC, just an indication it is part of cipher */
385 # define SSL_AEAD 0x00000040U
386 # define SSL_GOST12_256 0x00000080U
387 # define SSL_GOST89MAC12 0x00000100U
388 # define SSL_GOST12_512 0x00000200U
390 /* Bits for algorithm_ssl (protocol version) */
391 # define SSL_SSLV3 0x00000002U
392 # define SSL_TLSV1 0x00000004U
393 # define SSL_TLSV1_2 0x00000008U
396 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
397 * sure to update this constant too
400 # define SSL_MD_MD5_IDX 0
401 # define SSL_MD_SHA1_IDX 1
402 # define SSL_MD_GOST94_IDX 2
403 # define SSL_MD_GOST89MAC_IDX 3
404 # define SSL_MD_SHA256_IDX 4
405 # define SSL_MD_SHA384_IDX 5
406 # define SSL_MD_GOST12_256_IDX 6
407 # define SSL_MD_GOST89MAC12_IDX 7
408 # define SSL_MD_GOST12_512_IDX 8
409 # define SSL_MD_MD5_SHA1_IDX 9
410 # define SSL_MD_SHA224_IDX 10
411 # define SSL_MD_SHA512_IDX 11
412 # define SSL_MAX_DIGEST 12
414 /* Bits for algorithm2 (handshake digests and other extra flags) */
416 /* Bits 0-7 are handshake MAC */
417 # define SSL_HANDSHAKE_MAC_MASK 0xFF
418 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
419 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
420 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
421 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
422 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
423 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
424 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
426 /* Bits 8-15 bits are PRF */
427 # define TLS1_PRF_DGST_SHIFT 8
428 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
429 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
430 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
431 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
432 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
433 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
434 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
437 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
438 * goes into algorithm2)
440 # define TLS1_STREAM_MAC 0x10000
442 # define SSL_DEFAULT_MASK 0X00000020U
444 # define SSL_STRONG_NONE 0x00000001U
445 # define SSL_LOW 0x00000002U
446 # define SSL_MEDIUM 0x00000004U
447 # define SSL_HIGH 0x00000008U
448 # define SSL_FIPS 0x00000010U
449 # define SSL_NOT_DEFAULT 0x00000020U
451 /* we have used 0000003f - 26 bits left to go */
453 /* Check if an SSL structure is using DTLS */
454 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
455 /* See if we need explicit IV */
456 # define SSL_USE_EXPLICIT_IV(s) \
457 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
459 * See if we use signature algorithms extension and signature algorithm
462 # define SSL_USE_SIGALGS(s) \
463 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
465 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
466 * apply to others in future.
468 # define SSL_USE_TLS1_2_CIPHERS(s) \
469 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
471 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
472 * flags because it may not be set to correct version yet.
474 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
475 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
476 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
478 # ifdef TLSEXT_TYPE_encrypt_then_mac
479 # define SSL_USE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC)
481 # define SSL_USE_ETM(s) (0)
484 /* Mostly for SSLv3 */
485 # define SSL_PKEY_RSA_ENC 0
486 # define SSL_PKEY_RSA_SIGN 1
487 # define SSL_PKEY_DSA_SIGN 2
488 # define SSL_PKEY_ECC 3
489 # define SSL_PKEY_GOST01 4
490 # define SSL_PKEY_GOST12_256 5
491 # define SSL_PKEY_GOST12_512 6
492 # define SSL_PKEY_NUM 7
494 * Pseudo-constant. GOST cipher suites can use different certs for 1
495 * SSL_CIPHER. So let's see which one we have in fact.
497 # define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1
500 * SSL_kRSA <- RSA_ENC
501 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
502 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
503 * SSL_aRSA <- RSA_ENC | RSA_SIGN
504 * SSL_aDSS <- DSA_SIGN
508 #define CERT_INVALID 0
509 #define CERT_PUBLIC_KEY 1
510 #define CERT_PRIVATE_KEY 2
514 /* CipherSuite length. SSLv3 and all TLS versions. */
515 #define TLS_CIPHER_LEN 2
516 /* used to hold info on the particular ciphers used */
517 struct ssl_cipher_st {
519 const char *name; /* text name */
520 uint32_t id; /* id, 4 bytes, first is version */
522 * changed in 1.0.0: these four used to be portions of a single value
525 uint32_t algorithm_mkey; /* key exchange algorithm */
526 uint32_t algorithm_auth; /* server authentication */
527 uint32_t algorithm_enc; /* symmetric encryption */
528 uint32_t algorithm_mac; /* symmetric authentication */
529 uint32_t algorithm_ssl; /* (major) protocol version */
530 uint32_t algo_strength; /* strength and export flags */
531 uint32_t algorithm2; /* Extra flags */
532 int32_t strength_bits; /* Number of bits really used */
533 uint32_t alg_bits; /* Number of bits for algorithm */
536 /* Used to hold SSL/TLS functions */
537 struct ssl_method_st {
541 int (*ssl_new) (SSL *s);
542 void (*ssl_clear) (SSL *s);
543 void (*ssl_free) (SSL *s);
544 int (*ssl_accept) (SSL *s);
545 int (*ssl_connect) (SSL *s);
546 int (*ssl_read) (SSL *s, void *buf, int len);
547 int (*ssl_peek) (SSL *s, void *buf, int len);
548 int (*ssl_write) (SSL *s, const void *buf, int len);
549 int (*ssl_shutdown) (SSL *s);
550 int (*ssl_renegotiate) (SSL *s);
551 int (*ssl_renegotiate_check) (SSL *s);
552 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
553 unsigned char *buf, int len, int peek);
554 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, int len);
555 int (*ssl_dispatch_alert) (SSL *s);
556 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
557 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
558 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
559 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
560 int (*ssl_pending) (const SSL *s);
561 int (*num_ciphers) (void);
562 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
563 const struct ssl_method_st *(*get_ssl_method) (int version);
564 long (*get_timeout) (void);
565 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
566 int (*ssl_version) (void);
567 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
568 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
572 * Lets make this into an ASN.1 type structure as follows
573 * SSL_SESSION_ID ::= SEQUENCE {
574 * version INTEGER, -- structure version number
575 * SSLversion INTEGER, -- SSL version number
576 * Cipher OCTET STRING, -- the 3 byte cipher ID
577 * Session_ID OCTET STRING, -- the Session ID
578 * Master_key OCTET STRING, -- the master key
579 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
580 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
581 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
582 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
583 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
584 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
585 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
586 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
587 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
588 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
589 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
590 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
591 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
592 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
594 * Look in ssl/ssl_asn1.c for more details
595 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
597 struct ssl_session_st {
598 int ssl_version; /* what ssl version session info is being
600 int master_key_length;
601 unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
602 /* session_id - valid? */
603 unsigned int session_id_length;
604 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
606 * this is used to determine whether the session is being reused in the
607 * appropriate context. It is up to the application to set this, via
610 unsigned int sid_ctx_length;
611 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
612 # ifndef OPENSSL_NO_PSK
613 char *psk_identity_hint;
617 * Used to indicate that session resumption is not allowed. Applications
618 * can also set this bit for a new session via not_resumable_session_cb
619 * to disable session caching and tickets.
622 /* This is the cert and type for the other end. */
625 /* Certificate chain of peer */
626 STACK_OF(X509) *peer_chain;
628 * when app_verify_callback accepts a session where the peer's
629 * certificate is not ok, we must remember the error for session reuse:
631 long verify_result; /* only for servers */
635 unsigned int compress_meth; /* Need to lookup the method */
636 const SSL_CIPHER *cipher;
637 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used
638 * to load the 'cipher' structure */
639 STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
640 CRYPTO_EX_DATA ex_data; /* application specific data */
642 * These are used to make removal of session-ids more efficient and to
643 * implement a maximum cache size.
645 struct ssl_session_st *prev, *next;
646 char *tlsext_hostname;
647 # ifndef OPENSSL_NO_EC
648 size_t tlsext_ecpointformatlist_length;
649 unsigned char *tlsext_ecpointformatlist; /* peer's list */
650 size_t tlsext_ellipticcurvelist_length;
651 unsigned char *tlsext_ellipticcurvelist; /* peer's list */
652 # endif /* OPENSSL_NO_EC */
654 unsigned char *tlsext_tick; /* Session ticket */
655 size_t tlsext_ticklen; /* Session ticket length */
656 unsigned long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
657 # ifndef OPENSSL_NO_SRP
663 /* Extended master secret support */
664 # define SSL_SESS_FLAG_EXTMS 0x1
667 # ifndef OPENSSL_NO_SRP
669 typedef struct srp_ctx_st {
670 /* param for all the callbacks */
672 /* set client Hello login callback */
673 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
674 /* set SRP N/g param callback for verification */
675 int (*SRP_verify_param_callback) (SSL *, void *);
676 /* set SRP client passwd callback */
677 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
679 BIGNUM *N, *g, *s, *B, *A;
683 unsigned long srp_Mask;
688 typedef struct ssl_comp_st SSL_COMP;
696 DECLARE_STACK_OF(SSL_COMP)
697 DECLARE_LHASH_OF(SSL_SESSION);
701 const SSL_METHOD *method;
702 STACK_OF(SSL_CIPHER) *cipher_list;
703 /* same as above but sorted for lookup */
704 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
705 struct x509_store_st /* X509_STORE */ *cert_store;
706 LHASH_OF(SSL_SESSION) *sessions;
708 * Most session-ids that will be cached, default is
709 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
711 unsigned long session_cache_size;
712 struct ssl_session_st *session_cache_head;
713 struct ssl_session_st *session_cache_tail;
715 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
716 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
717 * means only SSL_accept which cache SSL_SESSIONS.
719 uint32_t session_cache_mode;
721 * If timeout is not 0, it is the default timeout value set when
722 * SSL_new() is called. This has been put in to make life easier to set
725 long session_timeout;
727 * If this callback is not null, it will be called each time a session id
728 * is added to the cache. If this function returns 1, it means that the
729 * callback will do a SSL_SESSION_free() when it has finished using it.
730 * Otherwise, on 0, it means the callback has finished with it. If
731 * remove_session_cb is not null, it will be called when a session-id is
732 * removed from the cache. After the call, OpenSSL will
733 * SSL_SESSION_free() it.
735 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
736 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
737 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
738 unsigned char *data, int len, int *copy);
740 int sess_connect; /* SSL new conn - started */
741 int sess_connect_renegotiate; /* SSL reneg - requested */
742 int sess_connect_good; /* SSL new conne/reneg - finished */
743 int sess_accept; /* SSL new accept - started */
744 int sess_accept_renegotiate; /* SSL reneg - requested */
745 int sess_accept_good; /* SSL accept/reneg - finished */
746 int sess_miss; /* session lookup misses */
747 int sess_timeout; /* reuse attempt on timeouted session */
748 int sess_cache_full; /* session removed due to full cache */
749 int sess_hit; /* session reuse actually done */
750 int sess_cb_hit; /* session-id that was not in the cache was
751 * passed back via the callback. This
752 * indicates that the application is
753 * supplying session-id's from other
754 * processes - spooky :-) */
759 /* if defined, these override the X509_verify_cert() calls */
760 int (*app_verify_callback) (X509_STORE_CTX *, void *);
761 void *app_verify_arg;
763 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
764 * ('app_verify_callback' was called with just one argument)
767 /* Default password callback. */
768 pem_password_cb *default_passwd_callback;
770 /* Default password callback user data. */
771 void *default_passwd_callback_userdata;
773 /* get client cert callback */
774 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
776 /* cookie generate callback */
777 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
778 unsigned int *cookie_len);
780 /* verify cookie callback */
781 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
782 unsigned int cookie_len);
784 CRYPTO_EX_DATA ex_data;
786 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
787 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
789 STACK_OF(X509) *extra_certs;
790 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
792 /* Default values used when no per-SSL value is defined follow */
794 /* used if SSL's info_callback is NULL */
795 void (*info_callback) (const SSL *ssl, int type, int val);
797 /* what we put in client cert requests */
798 STACK_OF(X509_NAME) *client_CA;
801 * Default values to use in SSL structures follow (these are copied by
807 int min_proto_version;
808 int max_proto_version;
811 struct cert_st /* CERT */ *cert;
814 /* callback that allows applications to peek at protocol messages */
815 void (*msg_callback) (int write_p, int version, int content_type,
816 const void *buf, size_t len, SSL *ssl, void *arg);
817 void *msg_callback_arg;
819 uint32_t verify_mode;
820 unsigned int sid_ctx_length;
821 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
822 /* called 'verify_callback' in the SSL */
823 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
825 /* Default generate session ID callback. */
826 GEN_SESSION_CB generate_session_id;
828 X509_VERIFY_PARAM *param;
833 * Maximum amount of data to send in one fragment. actual record size can
834 * be more than this due to padding and MAC overheads.
836 unsigned int max_send_fragment;
838 # ifndef OPENSSL_NO_ENGINE
840 * Engine to pass requests for client certs to
842 ENGINE *client_cert_engine;
845 /* TLS extensions servername callback */
846 int (*tlsext_servername_callback) (SSL *, int *, void *);
847 void *tlsext_servername_arg;
848 /* RFC 4507 session ticket keys */
849 unsigned char tlsext_tick_key_name[16];
850 unsigned char tlsext_tick_hmac_key[16];
851 unsigned char tlsext_tick_aes_key[16];
852 /* Callback to support customisation of ticket key setting */
853 int (*tlsext_ticket_key_cb) (SSL *ssl,
854 unsigned char *name, unsigned char *iv,
855 EVP_CIPHER_CTX *ectx,
856 HMAC_CTX *hctx, int enc);
858 /* certificate status request info */
859 /* Callback for status request */
860 int (*tlsext_status_cb) (SSL *ssl, void *arg);
861 void *tlsext_status_arg;
863 # ifndef OPENSSL_NO_PSK
864 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
866 unsigned int max_identity_len,
868 unsigned int max_psk_len);
869 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
871 unsigned int max_psk_len);
874 # ifndef OPENSSL_NO_SRP
875 SRP_CTX srp_ctx; /* ctx for SRP authentication */
878 # ifndef OPENSSL_NO_NEXTPROTONEG
879 /* Next protocol negotiation information */
880 /* (for experimental NPN extension). */
883 * For a server, this contains a callback function by which the set of
884 * advertised protocols can be provided.
886 int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
887 unsigned int *len, void *arg);
888 void *next_protos_advertised_cb_arg;
890 * For a client, this contains a callback function that selects the next
891 * protocol from the list provided by the server.
893 int (*next_proto_select_cb) (SSL *s, unsigned char **out,
894 unsigned char *outlen,
895 const unsigned char *in,
896 unsigned int inlen, void *arg);
897 void *next_proto_select_cb_arg;
901 * ALPN information (we are in the process of transitioning from NPN to
906 * For a server, this contains a callback function that allows the
907 * server to select the protocol for the connection.
908 * out: on successful return, this must point to the raw protocol
909 * name (without the length prefix).
910 * outlen: on successful return, this contains the length of |*out|.
911 * in: points to the client's list of supported protocols in
913 * inlen: the length of |in|.
915 int (*alpn_select_cb) (SSL *s,
916 const unsigned char **out,
917 unsigned char *outlen,
918 const unsigned char *in,
919 unsigned int inlen, void *arg);
920 void *alpn_select_cb_arg;
923 * For a client, this contains the list of supported protocols in wire
926 unsigned char *alpn_client_proto_list;
927 unsigned alpn_client_proto_list_len;
929 /* Shared DANE context */
930 struct dane_ctx_st dane;
932 /* SRTP profiles we are willing to do from RFC 5764 */
933 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
935 * Callback for disabling session caching and ticket support on a session
936 * basis, depending on the chosen cipher.
938 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
939 # ifndef OPENSSL_NO_EC
940 /* EC extension values inherited by SSL structure */
941 size_t tlsext_ecpointformatlist_length;
942 unsigned char *tlsext_ecpointformatlist;
943 size_t tlsext_ellipticcurvelist_length;
944 unsigned char *tlsext_ellipticcurvelist;
945 # endif /* OPENSSL_NO_EC */
951 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
957 const SSL_METHOD *method;
959 * There are 2 BIO's even though they are normally both the same. This
960 * is so data can be read and written to different handlers
962 /* used by SSL_read */
964 /* used by SSL_write */
966 /* used during session-id reuse to concatenate messages */
969 * This holds a variable that indicates what we were doing when a 0 or -1
970 * is returned. This is needed for non-blocking IO so we know what
971 * request needs re-doing when in SSL_accept or SSL_connect
975 int (*handshake_func) (SSL *);
977 * Imagine that here's a boolean member "init" that is switched as soon
978 * as SSL_set_{accept/connect}_state is called for the first time, so
979 * that "state" and "handshake_func" are properly initialized. But as
980 * handshake_func is == 0 until then, we use this test instead of an
983 /* are we the server side? */
986 * Generate a new session or reuse an old one.
987 * NB: For servers, the 'new' session may actually be a previously
988 * cached session or even the previous session unless
989 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
992 /* don't send shutdown packets */
994 /* we have shut things down, 0x01 sent, 0x02 for received */
999 BUF_MEM *init_buf; /* buffer used during init */
1000 void *init_msg; /* pointer to handshake message body, set by
1001 * ssl3_get_message() */
1002 int init_num; /* amount read/written */
1003 int init_off; /* amount read/written */
1005 struct ssl3_state_st *s3; /* SSLv3 variables */
1006 struct dtls1_state_st *d1; /* DTLSv1 variables */
1008 /* callback that allows applications to peek at protocol messages */
1009 void (*msg_callback) (int write_p, int version, int content_type,
1010 const void *buf, size_t len, SSL *ssl, void *arg);
1011 void *msg_callback_arg;
1012 int hit; /* reusing a previous session */
1013 X509_VERIFY_PARAM *param;
1015 /* Per connection DANE state */
1016 struct dane_st dane;
1019 STACK_OF(SSL_CIPHER) *cipher_list;
1020 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1022 * These are the ones being used, the ones in SSL_SESSION are the ones to
1023 * be 'copied' into these ones
1026 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1027 EVP_MD_CTX *read_hash; /* used for mac generation */
1028 COMP_CTX *compress; /* compression */
1029 COMP_CTX *expand; /* uncompress */
1030 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1031 EVP_MD_CTX *write_hash; /* used for mac generation */
1034 /* This is used to hold the server certificate used */
1035 struct cert_st /* CERT */ *cert;
1037 * the session_id_context is used to ensure sessions are only reused in
1038 * the appropriate context
1040 unsigned int sid_ctx_length;
1041 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1042 /* This can also be in the session once a session is established */
1043 SSL_SESSION *session;
1044 /* Default generate session ID callback. */
1045 GEN_SESSION_CB generate_session_id;
1048 * 0 don't care about verify failure.
1049 * 1 fail if verify fails
1051 uint32_t verify_mode;
1052 /* fail if callback returns 0 */
1053 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1054 /* optional informational callback */
1055 void (*info_callback) (const SSL *ssl, int type, int val);
1056 /* error bytes to be written */
1060 # ifndef OPENSSL_NO_PSK
1061 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
1063 unsigned int max_identity_len,
1065 unsigned int max_psk_len);
1066 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
1068 unsigned int max_psk_len);
1072 * set this flag to 1 and a sleep(1) is put into all SSL_read() and
1073 * SSL_write() calls, good for nbio debuging :-)
1076 /* extra application data */
1078 CRYPTO_EX_DATA ex_data;
1079 /* for server side, keep the list of CA_dn we can use */
1080 STACK_OF(X509_NAME) *client_CA;
1082 /* protocol behaviour */
1086 int min_proto_version;
1087 int max_proto_version;
1090 /* what was passed, used for SSLv3/TLS rollback check */
1092 unsigned int max_send_fragment;
1094 /* TLS extension debug callback */
1095 void (*tlsext_debug_cb) (SSL *s, int client_server, int type,
1096 unsigned char *data, int len, void *arg);
1097 void *tlsext_debug_arg;
1098 char *tlsext_hostname;
1100 * no further mod of servername
1101 * 0 : call the servername extension callback.
1102 * 1 : prepare 2, allow last ack just after in server callback.
1103 * 2 : don't call servername callback, no ack in server hello
1105 int servername_done;
1106 /* certificate status request info */
1107 /* Status type or -1 if no status type */
1108 int tlsext_status_type;
1109 /* Expect OCSP CertificateStatus message */
1110 int tlsext_status_expected;
1111 /* OCSP status request only */
1112 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
1113 X509_EXTENSIONS *tlsext_ocsp_exts;
1114 /* OCSP response received or to be sent */
1115 unsigned char *tlsext_ocsp_resp;
1116 int tlsext_ocsp_resplen;
1117 /* RFC4507 session ticket expected to be received or sent */
1118 int tlsext_ticket_expected;
1119 # ifndef OPENSSL_NO_EC
1120 size_t tlsext_ecpointformatlist_length;
1122 unsigned char *tlsext_ecpointformatlist;
1123 size_t tlsext_ellipticcurvelist_length;
1125 unsigned char *tlsext_ellipticcurvelist;
1126 # endif /* OPENSSL_NO_EC */
1127 /* TLS Session Ticket extension override */
1128 TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
1129 /* TLS Session Ticket extension callback */
1130 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
1131 void *tls_session_ticket_ext_cb_arg;
1132 /* TLS pre-shared secret session resumption */
1133 tls_session_secret_cb_fn tls_session_secret_cb;
1134 void *tls_session_secret_cb_arg;
1135 SSL_CTX *initial_ctx; /* initial ctx, used to store sessions */
1136 # ifndef OPENSSL_NO_NEXTPROTONEG
1138 * Next protocol negotiation. For the client, this is the protocol that
1139 * we sent in NextProtocol and is set when handling ServerHello
1140 * extensions. For a server, this is the client's selected_protocol from
1141 * NextProtocol and is set when handling the NextProtocol message, before
1142 * the Finished message.
1144 unsigned char *next_proto_negotiated;
1145 unsigned char next_proto_negotiated_len;
1147 # define session_ctx initial_ctx
1149 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1150 /* What's been chosen */
1151 SRTP_PROTECTION_PROFILE *srtp_profile;
1153 * Is use of the Heartbeat extension negotiated?
1156 * 2: enabled, but not allowed to send Requests
1158 unsigned int tlsext_heartbeat;
1159 /* Indicates if a HeartbeatRequest is in flight */
1160 unsigned int tlsext_hb_pending;
1161 /* HeartbeatRequest sequence number */
1162 unsigned int tlsext_hb_seq;
1164 * For a client, this contains the list of supported protocols in wire
1167 unsigned char *alpn_client_proto_list;
1168 unsigned alpn_client_proto_list_len;
1171 * 1 if we are renegotiating.
1172 * 2 if we are a server and are inside a handshake
1173 * (i.e. not just sending a HelloRequest)
1176 # ifndef OPENSSL_NO_SRP
1177 /* ctx for SRP authentication */
1181 * Callback for disabling session caching and ticket support on a session
1182 * basis, depending on the chosen cipher.
1184 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1186 RECORD_LAYER rlayer;
1188 /* Default password callback. */
1189 pem_password_cb *default_passwd_callback;
1191 /* Default password callback user data. */
1192 void *default_passwd_callback_userdata;
1194 /* Async Job info */
1199 typedef struct ssl3_state_st {
1201 int read_mac_secret_size;
1202 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1203 int write_mac_secret_size;
1204 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1205 unsigned char server_random[SSL3_RANDOM_SIZE];
1206 unsigned char client_random[SSL3_RANDOM_SIZE];
1207 /* flags for countermeasure against known-IV weakness */
1208 int need_empty_fragments;
1209 int empty_fragment_done;
1210 /* used during startup, digest all incoming/outgoing packets */
1211 BIO *handshake_buffer;
1213 * When handshake digest is determined, buffer is hashed and
1214 * freed and MD_CTX for the required digest is stored here.
1216 EVP_MD_CTX *handshake_dgst;
1218 * Set whenever an expected ChangeCipherSpec message is processed.
1219 * Unset when the peer's Finished message is received.
1220 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1222 int change_cipher_spec;
1226 * we allow one fatal and one warning alert to be outstanding, send close
1227 * alert via the warning alert
1230 unsigned char send_alert[2];
1232 * This flag is set when we should renegotiate ASAP, basically when there
1233 * is no more data in the read or write buffers
1236 int total_renegotiations;
1237 int num_renegotiations;
1238 int in_read_app_data;
1240 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1241 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1243 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1244 int peer_finish_md_len;
1245 unsigned long message_size;
1247 /* used to hold the new cipher we are going to use */
1248 const SSL_CIPHER *new_cipher;
1249 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1250 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1252 /* used for certificate requests */
1255 char ctype[SSL3_CT_NUMBER];
1256 STACK_OF(X509_NAME) *ca_names;
1257 int key_block_length;
1258 unsigned char *key_block;
1259 const EVP_CIPHER *new_sym_enc;
1260 const EVP_MD *new_hash;
1261 int new_mac_pkey_type;
1262 int new_mac_secret_size;
1263 # ifndef OPENSSL_NO_COMP
1264 const SSL_COMP *new_compression;
1266 char *new_compression;
1269 /* Raw values of the cipher list from a client */
1270 unsigned char *ciphers_raw;
1271 size_t ciphers_rawlen;
1272 /* Temporary storage for premaster secret */
1275 #ifndef OPENSSL_NO_PSK
1276 /* Temporary storage for PSK key */
1281 * signature algorithms peer reports: e.g. supported signature
1282 * algorithms extension for server or as part of a certificate
1283 * request for client.
1285 unsigned char *peer_sigalgs;
1286 /* Size of above array */
1287 size_t peer_sigalgslen;
1288 /* Digest peer uses for signing */
1289 const EVP_MD *peer_md;
1290 /* Array of digests used for signing */
1291 const EVP_MD *md[SSL_PKEY_NUM];
1293 * Set if corresponding CERT_PKEY can be used with current
1294 * SSL session: e.g. appropriate curve, signature algorithms etc.
1295 * If zero it can't be used at all.
1297 uint32_t valid_flags[SSL_PKEY_NUM];
1299 * For servers the following masks are for the key and auth algorithms
1300 * that are supported by the certs below. For clients they are masks of
1301 * *disabled* algorithms based on the current session.
1309 /* Connection binding to prevent renegotiation attacks */
1310 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1311 unsigned char previous_client_finished_len;
1312 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1313 unsigned char previous_server_finished_len;
1314 int send_connection_binding; /* TODOEKR */
1316 # ifndef OPENSSL_NO_NEXTPROTONEG
1318 * Set if we saw the Next Protocol Negotiation extension from our peer.
1320 int next_proto_neg_seen;
1324 * ALPN information (we are in the process of transitioning from NPN to
1329 * In a server these point to the selected ALPN protocol after the
1330 * ClientHello has been processed. In a client these contain the protocol
1331 * that the server selected once the ServerHello has been processed.
1333 unsigned char *alpn_selected;
1334 unsigned alpn_selected_len;
1336 # ifndef OPENSSL_NO_EC
1338 * This is set to true if we believe that this is a version of Safari
1339 * running on OS X 10.6 or newer. We wish to know this because Safari on
1340 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1342 char is_probably_safari;
1343 # endif /* !OPENSSL_NO_EC */
1345 /* For clients: peer temporary key */
1346 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1353 /* DTLS structures */
1355 # ifndef OPENSSL_NO_SCTP
1356 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1359 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1360 # define DTLS1_MAX_MTU_OVERHEAD 48
1363 * Flag used in message reuse to indicate the buffer contains the record
1364 * header as well as the the handshake message header.
1366 # define DTLS1_SKIP_RECORD_HEADER 2
1368 struct dtls1_retransmit_state {
1369 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1370 EVP_MD_CTX *write_hash; /* used for mac generation */
1371 COMP_CTX *compress; /* compression */
1372 SSL_SESSION *session;
1373 unsigned short epoch;
1376 struct hm_header_st {
1378 unsigned long msg_len;
1380 unsigned long frag_off;
1381 unsigned long frag_len;
1382 unsigned int is_ccs;
1383 struct dtls1_retransmit_state saved_retransmit_state;
1386 struct dtls1_timeout_st {
1387 /* Number of read timeouts so far */
1388 unsigned int read_timeouts;
1389 /* Number of write timeouts so far */
1390 unsigned int write_timeouts;
1391 /* Number of alerts received so far */
1392 unsigned int num_alerts;
1395 typedef struct hm_fragment_st {
1396 struct hm_header_st msg_header;
1397 unsigned char *fragment;
1398 unsigned char *reassembly;
1401 typedef struct dtls1_state_st {
1402 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1403 unsigned int cookie_len;
1404 unsigned int cookie_verified;
1406 /* handshake message numbers */
1407 unsigned short handshake_write_seq;
1408 unsigned short next_handshake_write_seq;
1409 unsigned short handshake_read_seq;
1411 /* Buffered handshake messages */
1412 pqueue buffered_messages;
1413 /* Buffered (sent) handshake records */
1414 pqueue sent_messages;
1416 unsigned int link_mtu; /* max on-the-wire DTLS packet size */
1417 unsigned int mtu; /* max DTLS packet size */
1418 struct hm_header_st w_msg_hdr;
1419 struct hm_header_st r_msg_hdr;
1420 struct dtls1_timeout_st timeout;
1422 * Indicates when the last handshake msg or heartbeat sent will timeout
1424 struct timeval next_timeout;
1425 /* Timeout duration */
1426 unsigned short timeout_duration;
1428 unsigned int retransmitting;
1429 # ifndef OPENSSL_NO_SCTP
1430 int shutdown_received;
1436 # ifndef OPENSSL_NO_EC
1438 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1440 # define EXPLICIT_PRIME_CURVE_TYPE 1
1441 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1442 # define NAMED_CURVE_TYPE 3
1443 # endif /* OPENSSL_NO_EC */
1445 typedef struct cert_pkey_st {
1447 EVP_PKEY *privatekey;
1448 /* Chain for this certificate */
1449 STACK_OF(X509) *chain;
1452 * serverinfo data for this certificate. The data is in TLS Extension
1453 * wire format, specifically it's a series of records like:
1454 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1456 * uint8_t data[length];
1458 unsigned char *serverinfo;
1459 size_t serverinfo_length;
1461 /* Retrieve Suite B flags */
1462 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1463 /* Uses to check strict mode: suite B modes are always strict */
1464 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1465 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1468 unsigned short ext_type;
1470 * Per-connection flags relating to this extension type: not used if
1471 * part of an SSL_CTX structure.
1474 custom_ext_add_cb add_cb;
1475 custom_ext_free_cb free_cb;
1477 custom_ext_parse_cb parse_cb;
1479 } custom_ext_method;
1481 /* ext_flags values */
1484 * Indicates an extension has been received. Used to check for unsolicited or
1485 * duplicate extensions.
1487 # define SSL_EXT_FLAG_RECEIVED 0x1
1489 * Indicates an extension has been sent: used to enable sending of
1490 * corresponding ServerHello extension.
1492 # define SSL_EXT_FLAG_SENT 0x2
1495 custom_ext_method *meths;
1497 } custom_ext_methods;
1499 typedef struct cert_st {
1500 /* Current active set */
1502 * ALWAYS points to an element of the pkeys array
1503 * Probably it would make more sense to store
1504 * an index, not a pointer.
1507 # ifndef OPENSSL_NO_DH
1509 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1512 /* Flags related to certificates */
1513 uint32_t cert_flags;
1514 CERT_PKEY pkeys[SSL_PKEY_NUM];
1516 * Certificate types (received or sent) in certificate request message.
1517 * On receive this is only set if number of certificate types exceeds
1520 unsigned char *ctypes;
1523 * suppported signature algorithms. When set on a client this is sent in
1524 * the client hello as the supported signature algorithms extension. For
1525 * servers it represents the signature algorithms we are willing to use.
1527 unsigned char *conf_sigalgs;
1528 /* Size of above array */
1529 size_t conf_sigalgslen;
1531 * Client authentication signature algorithms, if not set then uses
1532 * conf_sigalgs. On servers these will be the signature algorithms sent
1533 * to the client in a cerificate request for TLS 1.2. On a client this
1534 * represents the signature algortithms we are willing to use for client
1537 unsigned char *client_sigalgs;
1538 /* Size of above array */
1539 size_t client_sigalgslen;
1541 * Signature algorithms shared by client and server: cached because these
1542 * are used most often.
1544 TLS_SIGALGS *shared_sigalgs;
1545 size_t shared_sigalgslen;
1547 * Certificate setup callback: if set is called whenever a certificate
1548 * may be required (client or server). the callback can then examine any
1549 * appropriate parameters and setup any certificates required. This
1550 * allows advanced applications to select certificates on the fly: for
1551 * example based on supported signature algorithms or curves.
1553 int (*cert_cb) (SSL *ssl, void *arg);
1556 * Optional X509_STORE for chain building or certificate validation If
1557 * NULL the parent SSL_CTX store is used instead.
1559 X509_STORE *chain_store;
1560 X509_STORE *verify_store;
1561 /* Custom extension methods for server and client */
1562 custom_ext_methods cli_ext;
1563 custom_ext_methods srv_ext;
1564 /* Security callback */
1565 int (*sec_cb) (SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
1566 void *other, void *ex);
1567 /* Security level */
1570 #ifndef OPENSSL_NO_PSK
1571 /* If not NULL psk identity hint to use for servers */
1572 char *psk_identity_hint;
1574 int references; /* >1 only if SSL_copy_session_id is used */
1577 /* Structure containing decoded values of signature algorithms extension */
1578 struct tls_sigalgs_st {
1579 /* NID of hash algorithm */
1581 /* NID of signature algorithm */
1583 /* Combined hash and signature NID */
1584 int signandhash_nid;
1585 /* Raw values used in extension */
1586 unsigned char rsign;
1587 unsigned char rhash;
1598 * #define ABORT_DEBUG
1601 * #define PKT_DEBUG 1
1607 * #define DES_OFB_DEBUG
1616 * #define IDEA_DEBUG
1619 # define FP_ICC (int (*)(const void *,const void *))
1622 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1623 * of a mess of functions, but hell, think of it as an opaque structure :-)
1625 typedef struct ssl3_enc_method {
1626 int (*enc) (SSL *, int);
1627 int (*mac) (SSL *, unsigned char *, int);
1628 int (*setup_key_block) (SSL *);
1629 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1631 int (*change_cipher_state) (SSL *, int);
1632 int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
1633 int finish_mac_length;
1634 const char *client_finished_label;
1635 int client_finished_label_len;
1636 const char *server_finished_label;
1637 int server_finished_label_len;
1638 int (*alert_value) (int);
1639 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1640 const char *, size_t,
1641 const unsigned char *, size_t,
1643 /* Various flags indicating protocol version requirements */
1645 /* Handshake header length */
1647 /* Set the handshake header */
1648 int (*set_handshake_header) (SSL *s, int type, unsigned long len);
1649 /* Write out handshake message */
1650 int (*do_write) (SSL *s);
1653 # define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
1654 # define ssl_handshake_start(s) \
1655 (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
1656 # define ssl_set_handshake_header(s, htype, len) \
1657 s->method->ssl3_enc->set_handshake_header(s, htype, len)
1658 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1660 /* Values for enc_flags */
1662 /* Uses explicit IV for CBC mode */
1663 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1664 /* Uses signature algorithms extension */
1665 # define SSL_ENC_FLAG_SIGALGS 0x2
1666 /* Uses SHA256 default PRF */
1667 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1669 # define SSL_ENC_FLAG_DTLS 0x8
1671 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1672 * apply to others in future.
1674 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1676 # ifndef OPENSSL_NO_COMP
1677 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1678 typedef struct ssl3_comp_st {
1679 int comp_id; /* The identifier byte for this compression
1681 char *name; /* Text name used for the compression type */
1682 COMP_METHOD *method; /* The method :-) */
1686 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
1687 OPENSSL_EXTERN const SSL_CIPHER ssl3_ciphers[];
1689 SSL_METHOD *ssl_bad_method(int ver);
1691 extern const SSL3_ENC_METHOD TLSv1_enc_data;
1692 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
1693 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
1694 extern const SSL3_ENC_METHOD SSLv3_enc_data;
1695 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
1696 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
1699 * Flags for SSL methods
1701 #define SSL_METHOD_NO_FIPS (1U<<0)
1702 #define SSL_METHOD_NO_SUITEB (1U<<1)
1704 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
1705 s_connect, s_get_meth, enc_data) \
1706 const SSL_METHOD *func_name(void) \
1708 static const SSL_METHOD func_name##_data= { \
1722 ssl3_renegotiate_check, \
1725 ssl3_dispatch_alert, \
1728 ssl3_get_cipher_by_char, \
1729 ssl3_put_cipher_by_char, \
1734 tls1_default_timeout, \
1736 ssl_undefined_void_function, \
1737 ssl3_callback_ctrl, \
1738 ssl3_ctx_callback_ctrl, \
1740 return &func_name##_data; \
1743 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
1744 const SSL_METHOD *func_name(void) \
1746 static const SSL_METHOD func_name##_data= { \
1748 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
1760 ssl3_renegotiate_check, \
1763 ssl3_dispatch_alert, \
1766 ssl3_get_cipher_by_char, \
1767 ssl3_put_cipher_by_char, \
1772 ssl3_default_timeout, \
1774 ssl_undefined_void_function, \
1775 ssl3_callback_ctrl, \
1776 ssl3_ctx_callback_ctrl, \
1778 return &func_name##_data; \
1781 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
1782 s_connect, s_get_meth, enc_data) \
1783 const SSL_METHOD *func_name(void) \
1785 static const SSL_METHOD func_name##_data= { \
1799 ssl3_renegotiate_check, \
1801 dtls1_write_app_data_bytes, \
1802 dtls1_dispatch_alert, \
1805 ssl3_get_cipher_by_char, \
1806 ssl3_put_cipher_by_char, \
1811 dtls1_default_timeout, \
1813 ssl_undefined_void_function, \
1814 ssl3_callback_ctrl, \
1815 ssl3_ctx_callback_ctrl, \
1817 return &func_name##_data; \
1820 struct openssl_ssl_test_functions {
1821 int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
1822 int (*p_ssl3_setup_buffers) (SSL *s);
1823 int (*p_tls1_process_heartbeat) (SSL *s,
1824 unsigned char *p, unsigned int length);
1825 int (*p_dtls1_process_heartbeat) (SSL *s,
1826 unsigned char *p, unsigned int length);
1829 # ifndef OPENSSL_UNIT_TEST
1831 void ssl_clear_cipher_ctx(SSL *s);
1832 int ssl_clear_bad_session(SSL *s);
1833 __owur CERT *ssl_cert_new(void);
1834 __owur CERT *ssl_cert_dup(CERT *cert);
1835 void ssl_cert_clear_certs(CERT *c);
1836 void ssl_cert_free(CERT *c);
1837 __owur int ssl_get_new_session(SSL *s, int session);
1838 __owur int ssl_get_prev_session(SSL *s, const PACKET *ext,
1839 const PACKET *session_id);
1840 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
1841 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
1842 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
1843 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1844 const SSL_CIPHER *const *bp);
1845 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
1846 STACK_OF(SSL_CIPHER) **pref,
1847 STACK_OF(SSL_CIPHER) **sorted,
1848 const char *rule_str, CERT *c);
1849 void ssl_update_cache(SSL *s, int mode);
1850 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
1851 const EVP_MD **md, int *mac_pkey_type,
1852 int *mac_secret_size, SSL_COMP **comp, int use_etm);
1853 __owur int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
1854 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr);
1855 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
1856 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
1857 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
1858 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
1859 __owur int ssl_cert_select_current(CERT *c, X509 *x);
1860 __owur int ssl_cert_set_current(CERT *c, long arg);
1861 __owur X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
1862 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg),
1865 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
1866 __owur int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
1867 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
1868 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
1870 __owur int ssl_security(SSL *s, int op, int bits, int nid, void *other);
1871 __owur int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other);
1873 int ssl_undefined_function(SSL *s);
1874 __owur int ssl_undefined_void_function(void);
1875 __owur int ssl_undefined_const_function(const SSL *s);
1876 __owur CERT_PKEY *ssl_get_server_send_pkey(SSL *s);
1877 __owur int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
1878 size_t *serverinfo_length);
1879 __owur EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
1880 __owur int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
1881 void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher);
1882 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
1883 __owur int ssl_verify_alarm_type(long type);
1884 void ssl_load_ciphers(void);
1885 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
1886 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
1888 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm, int nid);
1889 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey);
1890 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
1892 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
1893 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1894 void ssl3_init_finished_mac(SSL *s);
1895 __owur int ssl3_setup_key_block(SSL *s);
1896 __owur int ssl3_change_cipher_state(SSL *s, int which);
1897 void ssl3_cleanup_key_block(SSL *s);
1898 __owur int ssl3_do_write(SSL *s, int type);
1899 int ssl3_send_alert(SSL *s, int level, int desc);
1900 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
1901 unsigned char *p, int len);
1902 __owur int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
1903 __owur int ssl3_num_ciphers(void);
1904 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
1905 int ssl3_renegotiate(SSL *ssl);
1906 int ssl3_renegotiate_check(SSL *ssl);
1907 __owur int ssl3_dispatch_alert(SSL *s);
1908 __owur int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
1910 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
1911 void ssl3_free_digest_list(SSL *s);
1912 __owur unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
1913 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
1914 STACK_OF(SSL_CIPHER) *clnt,
1915 STACK_OF(SSL_CIPHER) *srvr);
1916 __owur int ssl3_digest_cached_records(SSL *s, int keep);
1917 __owur int ssl3_new(SSL *s);
1918 void ssl3_free(SSL *s);
1919 __owur int ssl3_read(SSL *s, void *buf, int len);
1920 __owur int ssl3_peek(SSL *s, void *buf, int len);
1921 __owur int ssl3_write(SSL *s, const void *buf, int len);
1922 __owur int ssl3_shutdown(SSL *s);
1923 void ssl3_clear(SSL *s);
1924 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
1925 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
1926 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1927 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
1929 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
1930 __owur long ssl3_default_timeout(void);
1932 __owur int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
1933 __owur int ssl3_handshake_write(SSL *s);
1935 __owur int ssl_allow_compression(SSL *s);
1937 __owur int ssl_set_client_hello_version(SSL *s);
1938 __owur int ssl_check_version_downgrade(SSL *s);
1939 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
1940 __owur int ssl_choose_server_version(SSL *s);
1941 __owur int ssl_choose_client_version(SSL *s, int version);
1943 __owur long tls1_default_timeout(void);
1944 __owur int dtls1_do_write(SSL *s, int type);
1945 void dtls1_set_message_header(SSL *s,
1946 unsigned char *p, unsigned char mt,
1948 unsigned long frag_off,
1949 unsigned long frag_len);
1951 __owur int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1953 __owur int dtls1_read_failed(SSL *s, int code);
1954 __owur int dtls1_buffer_message(SSL *s, int ccs);
1955 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq,
1956 unsigned long frag_off, int *found);
1957 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1958 int dtls1_retransmit_buffered_messages(SSL *s);
1959 void dtls1_clear_record_buffer(SSL *s);
1960 void dtls1_get_message_header(unsigned char *data,
1961 struct hm_header_st *msg_hdr);
1962 __owur long dtls1_default_timeout(void);
1963 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
1964 __owur int dtls1_check_timeout_num(SSL *s);
1965 __owur int dtls1_handle_timeout(SSL *s);
1966 __owur const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1967 void dtls1_start_timer(SSL *s);
1968 void dtls1_stop_timer(SSL *s);
1969 __owur int dtls1_is_timer_expired(SSL *s);
1970 void dtls1_double_timeout(SSL *s);
1971 __owur unsigned int dtls_raw_hello_verify_request(unsigned char *buf,
1972 unsigned char *cookie,
1973 unsigned char cookie_len);
1974 __owur int dtls1_send_newsession_ticket(SSL *s);
1975 __owur unsigned int dtls1_min_mtu(SSL *s);
1976 void dtls1_hm_fragment_free(hm_fragment *frag);
1977 __owur int dtls1_query_mtu(SSL *s);
1979 __owur int tls1_new(SSL *s);
1980 void tls1_free(SSL *s);
1981 void tls1_clear(SSL *s);
1982 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1983 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1985 __owur int dtls1_new(SSL *s);
1986 void dtls1_free(SSL *s);
1987 void dtls1_clear(SSL *s);
1988 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1989 __owur int dtls1_shutdown(SSL *s);
1991 __owur int dtls1_dispatch_alert(SSL *s);
1993 __owur int ssl_init_wbio_buffer(SSL *s, int push);
1994 void ssl_free_wbio_buffer(SSL *s);
1996 __owur int tls1_change_cipher_state(SSL *s, int which);
1997 __owur int tls1_setup_key_block(SSL *s);
1998 __owur int tls1_final_finish_mac(SSL *s,
1999 const char *str, int slen, unsigned char *p);
2000 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
2001 unsigned char *p, int len);
2002 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2003 const char *label, size_t llen,
2004 const unsigned char *p, size_t plen,
2006 __owur int tls1_alert_code(int code);
2007 __owur int ssl3_alert_code(int code);
2008 __owur int ssl_ok(SSL *s);
2010 # ifndef OPENSSL_NO_EC
2011 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2014 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2016 # ifndef OPENSSL_NO_EC
2017 __owur int tls1_ec_curve_id2nid(int curve_id);
2018 __owur int tls1_ec_nid2curve_id(int nid);
2019 __owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
2020 __owur int tls1_shared_curve(SSL *s, int nmatch);
2021 __owur int tls1_set_curves(unsigned char **pext, size_t *pextlen,
2022 int *curves, size_t ncurves);
2023 __owur int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
2025 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2026 # endif /* OPENSSL_NO_EC */
2028 __owur int tls1_shared_list(SSL *s,
2029 const unsigned char *l1, size_t l1len,
2030 const unsigned char *l2, size_t l2len, int nmatch);
2031 __owur unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
2032 unsigned char *limit, int *al);
2033 __owur unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
2034 unsigned char *limit, int *al);
2035 __owur int ssl_parse_clienthello_tlsext(SSL *s, PACKET *pkt);
2036 void ssl_set_default_md(SSL *s);
2037 __owur int tls1_set_server_sigalgs(SSL *s);
2038 __owur int ssl_check_clienthello_tlsext_late(SSL *s);
2039 __owur int ssl_parse_serverhello_tlsext(SSL *s, PACKET *pkt);
2040 __owur int ssl_prepare_clienthello_tlsext(SSL *s);
2041 __owur int ssl_prepare_serverhello_tlsext(SSL *s);
2043 # ifndef OPENSSL_NO_HEARTBEATS
2044 __owur int tls1_heartbeat(SSL *s);
2045 __owur int dtls1_heartbeat(SSL *s);
2046 __owur int tls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
2047 __owur int dtls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
2050 __owur int tls_check_serverhello_tlsext_early(SSL *s, const PACKET *ext,
2051 const PACKET *session_id,
2054 __owur int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
2056 __owur int tls12_get_sigid(const EVP_PKEY *pk);
2057 __owur const EVP_MD *tls12_get_hash(unsigned char hash_alg);
2058 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2060 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2061 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
2062 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2064 void tls1_set_cert_validity(SSL *s);
2066 # ifndef OPENSSL_NO_DH
2067 __owur DH *ssl_get_auto_dh(SSL *s);
2070 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2071 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, int vfy);
2073 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2074 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2075 __owur int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2077 __owur int ssl_parse_serverhello_renegotiate_ext(SSL *s, PACKET *pkt,
2079 __owur int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2081 __owur int ssl_parse_clienthello_renegotiate_ext(SSL *s, PACKET *pkt, int *al);
2082 __owur long ssl_get_algorithm2(SSL *s);
2083 __owur size_t tls12_copy_sigalgs(SSL *s, unsigned char *out,
2084 const unsigned char *psig, size_t psiglen);
2085 __owur int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize);
2086 __owur int tls1_process_sigalgs(SSL *s);
2087 __owur size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
2088 __owur int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s,
2089 const unsigned char *sig, EVP_PKEY *pkey);
2090 void ssl_set_client_disabled(SSL *s);
2091 __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op);
2093 __owur int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2095 __owur int ssl_parse_clienthello_use_srtp_ext(SSL *s, PACKET *pkt, int *al);
2096 __owur int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2098 __owur int ssl_parse_serverhello_use_srtp_ext(SSL *s, PACKET *pkt, int *al);
2100 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen);
2101 __owur const EVP_MD *ssl_md(int idx);
2102 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2103 __owur const EVP_MD *ssl_prf_md(SSL *s);
2106 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2107 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2108 unsigned char *md_out,
2109 size_t *md_out_size,
2110 const unsigned char header[13],
2111 const unsigned char *data,
2112 size_t data_plus_mac_size,
2113 size_t data_plus_mac_plus_padding_size,
2114 const unsigned char *mac_secret,
2115 unsigned mac_secret_length, char is_sslv3);
2117 void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
2118 EVP_MD_CTX *mac_ctx, const unsigned char *data,
2119 size_t data_len, size_t orig_len);
2121 __owur int srp_generate_server_master_secret(SSL *s);
2122 __owur int srp_generate_client_master_secret(SSL *s);
2123 __owur int srp_verify_server_param(SSL *s, int *al);
2127 void custom_ext_init(custom_ext_methods *meths);
2129 __owur int custom_ext_parse(SSL *s, int server,
2130 unsigned int ext_type,
2131 const unsigned char *ext_data, size_t ext_size, int *al);
2132 __owur int custom_ext_add(SSL *s, int server,
2133 unsigned char **pret, unsigned char *limit, int *al);
2135 __owur int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src);
2136 void custom_exts_free(custom_ext_methods *exts);
2140 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2141 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2142 # define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
2143 # define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat