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;
694 DEFINE_LHASH_OF(SSL_SESSION);
698 const SSL_METHOD *method;
699 STACK_OF(SSL_CIPHER) *cipher_list;
700 /* same as above but sorted for lookup */
701 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
702 struct x509_store_st /* X509_STORE */ *cert_store;
703 LHASH_OF(SSL_SESSION) *sessions;
705 * Most session-ids that will be cached, default is
706 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
708 unsigned long session_cache_size;
709 struct ssl_session_st *session_cache_head;
710 struct ssl_session_st *session_cache_tail;
712 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
713 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
714 * means only SSL_accept which cache SSL_SESSIONS.
716 uint32_t session_cache_mode;
718 * If timeout is not 0, it is the default timeout value set when
719 * SSL_new() is called. This has been put in to make life easier to set
722 long session_timeout;
724 * If this callback is not null, it will be called each time a session id
725 * is added to the cache. If this function returns 1, it means that the
726 * callback will do a SSL_SESSION_free() when it has finished using it.
727 * Otherwise, on 0, it means the callback has finished with it. If
728 * remove_session_cb is not null, it will be called when a session-id is
729 * removed from the cache. After the call, OpenSSL will
730 * SSL_SESSION_free() it.
732 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
733 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
734 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
735 unsigned char *data, int len, int *copy);
737 int sess_connect; /* SSL new conn - started */
738 int sess_connect_renegotiate; /* SSL reneg - requested */
739 int sess_connect_good; /* SSL new conne/reneg - finished */
740 int sess_accept; /* SSL new accept - started */
741 int sess_accept_renegotiate; /* SSL reneg - requested */
742 int sess_accept_good; /* SSL accept/reneg - finished */
743 int sess_miss; /* session lookup misses */
744 int sess_timeout; /* reuse attempt on timeouted session */
745 int sess_cache_full; /* session removed due to full cache */
746 int sess_hit; /* session reuse actually done */
747 int sess_cb_hit; /* session-id that was not in the cache was
748 * passed back via the callback. This
749 * indicates that the application is
750 * supplying session-id's from other
751 * processes - spooky :-) */
756 /* if defined, these override the X509_verify_cert() calls */
757 int (*app_verify_callback) (X509_STORE_CTX *, void *);
758 void *app_verify_arg;
760 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
761 * ('app_verify_callback' was called with just one argument)
764 /* Default password callback. */
765 pem_password_cb *default_passwd_callback;
767 /* Default password callback user data. */
768 void *default_passwd_callback_userdata;
770 /* get client cert callback */
771 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
773 /* cookie generate callback */
774 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
775 unsigned int *cookie_len);
777 /* verify cookie callback */
778 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
779 unsigned int cookie_len);
781 CRYPTO_EX_DATA ex_data;
783 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
784 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
786 STACK_OF(X509) *extra_certs;
787 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
789 /* Default values used when no per-SSL value is defined follow */
791 /* used if SSL's info_callback is NULL */
792 void (*info_callback) (const SSL *ssl, int type, int val);
794 /* what we put in client cert requests */
795 STACK_OF(X509_NAME) *client_CA;
798 * Default values to use in SSL structures follow (these are copied by
804 int min_proto_version;
805 int max_proto_version;
808 struct cert_st /* CERT */ *cert;
811 /* callback that allows applications to peek at protocol messages */
812 void (*msg_callback) (int write_p, int version, int content_type,
813 const void *buf, size_t len, SSL *ssl, void *arg);
814 void *msg_callback_arg;
816 uint32_t verify_mode;
817 unsigned int sid_ctx_length;
818 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
819 /* called 'verify_callback' in the SSL */
820 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
822 /* Default generate session ID callback. */
823 GEN_SESSION_CB generate_session_id;
825 X509_VERIFY_PARAM *param;
830 * Maximum amount of data to send in one fragment. actual record size can
831 * be more than this due to padding and MAC overheads.
833 unsigned int max_send_fragment;
835 # ifndef OPENSSL_NO_ENGINE
837 * Engine to pass requests for client certs to
839 ENGINE *client_cert_engine;
842 /* TLS extensions servername callback */
843 int (*tlsext_servername_callback) (SSL *, int *, void *);
844 void *tlsext_servername_arg;
845 /* RFC 4507 session ticket keys */
846 unsigned char tlsext_tick_key_name[16];
847 unsigned char tlsext_tick_hmac_key[16];
848 unsigned char tlsext_tick_aes_key[16];
849 /* Callback to support customisation of ticket key setting */
850 int (*tlsext_ticket_key_cb) (SSL *ssl,
851 unsigned char *name, unsigned char *iv,
852 EVP_CIPHER_CTX *ectx,
853 HMAC_CTX *hctx, int enc);
855 /* certificate status request info */
856 /* Callback for status request */
857 int (*tlsext_status_cb) (SSL *ssl, void *arg);
858 void *tlsext_status_arg;
860 # ifndef OPENSSL_NO_PSK
861 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
863 unsigned int max_identity_len,
865 unsigned int max_psk_len);
866 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
868 unsigned int max_psk_len);
871 # ifndef OPENSSL_NO_SRP
872 SRP_CTX srp_ctx; /* ctx for SRP authentication */
875 # ifndef OPENSSL_NO_NEXTPROTONEG
876 /* Next protocol negotiation information */
877 /* (for experimental NPN extension). */
880 * For a server, this contains a callback function by which the set of
881 * advertised protocols can be provided.
883 int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
884 unsigned int *len, void *arg);
885 void *next_protos_advertised_cb_arg;
887 * For a client, this contains a callback function that selects the next
888 * protocol from the list provided by the server.
890 int (*next_proto_select_cb) (SSL *s, unsigned char **out,
891 unsigned char *outlen,
892 const unsigned char *in,
893 unsigned int inlen, void *arg);
894 void *next_proto_select_cb_arg;
898 * ALPN information (we are in the process of transitioning from NPN to
903 * For a server, this contains a callback function that allows the
904 * server to select the protocol for the connection.
905 * out: on successful return, this must point to the raw protocol
906 * name (without the length prefix).
907 * outlen: on successful return, this contains the length of |*out|.
908 * in: points to the client's list of supported protocols in
910 * inlen: the length of |in|.
912 int (*alpn_select_cb) (SSL *s,
913 const unsigned char **out,
914 unsigned char *outlen,
915 const unsigned char *in,
916 unsigned int inlen, void *arg);
917 void *alpn_select_cb_arg;
920 * For a client, this contains the list of supported protocols in wire
923 unsigned char *alpn_client_proto_list;
924 unsigned alpn_client_proto_list_len;
926 /* Shared DANE context */
927 struct dane_ctx_st dane;
929 /* SRTP profiles we are willing to do from RFC 5764 */
930 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
932 * Callback for disabling session caching and ticket support on a session
933 * basis, depending on the chosen cipher.
935 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
936 # ifndef OPENSSL_NO_EC
937 /* EC extension values inherited by SSL structure */
938 size_t tlsext_ecpointformatlist_length;
939 unsigned char *tlsext_ecpointformatlist;
940 size_t tlsext_ellipticcurvelist_length;
941 unsigned char *tlsext_ellipticcurvelist;
942 # endif /* OPENSSL_NO_EC */
948 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
954 const SSL_METHOD *method;
956 * There are 2 BIO's even though they are normally both the same. This
957 * is so data can be read and written to different handlers
959 /* used by SSL_read */
961 /* used by SSL_write */
963 /* used during session-id reuse to concatenate messages */
966 * This holds a variable that indicates what we were doing when a 0 or -1
967 * is returned. This is needed for non-blocking IO so we know what
968 * request needs re-doing when in SSL_accept or SSL_connect
972 int (*handshake_func) (SSL *);
974 * Imagine that here's a boolean member "init" that is switched as soon
975 * as SSL_set_{accept/connect}_state is called for the first time, so
976 * that "state" and "handshake_func" are properly initialized. But as
977 * handshake_func is == 0 until then, we use this test instead of an
980 /* are we the server side? */
983 * Generate a new session or reuse an old one.
984 * NB: For servers, the 'new' session may actually be a previously
985 * cached session or even the previous session unless
986 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
989 /* don't send shutdown packets */
991 /* we have shut things down, 0x01 sent, 0x02 for received */
996 BUF_MEM *init_buf; /* buffer used during init */
997 void *init_msg; /* pointer to handshake message body, set by
998 * ssl3_get_message() */
999 int init_num; /* amount read/written */
1000 int init_off; /* amount read/written */
1002 struct ssl3_state_st *s3; /* SSLv3 variables */
1003 struct dtls1_state_st *d1; /* DTLSv1 variables */
1005 /* callback that allows applications to peek at protocol messages */
1006 void (*msg_callback) (int write_p, int version, int content_type,
1007 const void *buf, size_t len, SSL *ssl, void *arg);
1008 void *msg_callback_arg;
1009 int hit; /* reusing a previous session */
1010 X509_VERIFY_PARAM *param;
1012 /* Per connection DANE state */
1013 struct dane_st dane;
1016 STACK_OF(SSL_CIPHER) *cipher_list;
1017 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1019 * These are the ones being used, the ones in SSL_SESSION are the ones to
1020 * be 'copied' into these ones
1023 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1024 EVP_MD_CTX *read_hash; /* used for mac generation */
1025 COMP_CTX *compress; /* compression */
1026 COMP_CTX *expand; /* uncompress */
1027 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1028 EVP_MD_CTX *write_hash; /* used for mac generation */
1031 /* This is used to hold the server certificate used */
1032 struct cert_st /* CERT */ *cert;
1034 * the session_id_context is used to ensure sessions are only reused in
1035 * the appropriate context
1037 unsigned int sid_ctx_length;
1038 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1039 /* This can also be in the session once a session is established */
1040 SSL_SESSION *session;
1041 /* Default generate session ID callback. */
1042 GEN_SESSION_CB generate_session_id;
1045 * 0 don't care about verify failure.
1046 * 1 fail if verify fails
1048 uint32_t verify_mode;
1049 /* fail if callback returns 0 */
1050 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1051 /* optional informational callback */
1052 void (*info_callback) (const SSL *ssl, int type, int val);
1053 /* error bytes to be written */
1057 # ifndef OPENSSL_NO_PSK
1058 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
1060 unsigned int max_identity_len,
1062 unsigned int max_psk_len);
1063 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
1065 unsigned int max_psk_len);
1068 /* extra application data */
1070 CRYPTO_EX_DATA ex_data;
1071 /* for server side, keep the list of CA_dn we can use */
1072 STACK_OF(X509_NAME) *client_CA;
1074 /* protocol behaviour */
1078 int min_proto_version;
1079 int max_proto_version;
1082 /* what was passed, used for SSLv3/TLS rollback check */
1084 unsigned int max_send_fragment;
1086 /* TLS extension debug callback */
1087 void (*tlsext_debug_cb) (SSL *s, int client_server, int type,
1088 unsigned char *data, int len, void *arg);
1089 void *tlsext_debug_arg;
1090 char *tlsext_hostname;
1092 * no further mod of servername
1093 * 0 : call the servername extension callback.
1094 * 1 : prepare 2, allow last ack just after in server callback.
1095 * 2 : don't call servername callback, no ack in server hello
1097 int servername_done;
1098 /* certificate status request info */
1099 /* Status type or -1 if no status type */
1100 int tlsext_status_type;
1101 /* Expect OCSP CertificateStatus message */
1102 int tlsext_status_expected;
1103 /* OCSP status request only */
1104 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
1105 X509_EXTENSIONS *tlsext_ocsp_exts;
1106 /* OCSP response received or to be sent */
1107 unsigned char *tlsext_ocsp_resp;
1108 int tlsext_ocsp_resplen;
1109 /* RFC4507 session ticket expected to be received or sent */
1110 int tlsext_ticket_expected;
1111 # ifndef OPENSSL_NO_EC
1112 size_t tlsext_ecpointformatlist_length;
1114 unsigned char *tlsext_ecpointformatlist;
1115 size_t tlsext_ellipticcurvelist_length;
1117 unsigned char *tlsext_ellipticcurvelist;
1118 # endif /* OPENSSL_NO_EC */
1119 /* TLS Session Ticket extension override */
1120 TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
1121 /* TLS Session Ticket extension callback */
1122 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
1123 void *tls_session_ticket_ext_cb_arg;
1124 /* TLS pre-shared secret session resumption */
1125 tls_session_secret_cb_fn tls_session_secret_cb;
1126 void *tls_session_secret_cb_arg;
1127 SSL_CTX *initial_ctx; /* initial ctx, used to store sessions */
1128 # ifndef OPENSSL_NO_NEXTPROTONEG
1130 * Next protocol negotiation. For the client, this is the protocol that
1131 * we sent in NextProtocol and is set when handling ServerHello
1132 * extensions. For a server, this is the client's selected_protocol from
1133 * NextProtocol and is set when handling the NextProtocol message, before
1134 * the Finished message.
1136 unsigned char *next_proto_negotiated;
1137 unsigned char next_proto_negotiated_len;
1139 # define session_ctx initial_ctx
1141 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1142 /* What's been chosen */
1143 SRTP_PROTECTION_PROFILE *srtp_profile;
1145 * Is use of the Heartbeat extension negotiated?
1148 * 2: enabled, but not allowed to send Requests
1150 unsigned int tlsext_heartbeat;
1151 /* Indicates if a HeartbeatRequest is in flight */
1152 unsigned int tlsext_hb_pending;
1153 /* HeartbeatRequest sequence number */
1154 unsigned int tlsext_hb_seq;
1156 * For a client, this contains the list of supported protocols in wire
1159 unsigned char *alpn_client_proto_list;
1160 unsigned alpn_client_proto_list_len;
1163 * 1 if we are renegotiating.
1164 * 2 if we are a server and are inside a handshake
1165 * (i.e. not just sending a HelloRequest)
1168 # ifndef OPENSSL_NO_SRP
1169 /* ctx for SRP authentication */
1173 * Callback for disabling session caching and ticket support on a session
1174 * basis, depending on the chosen cipher.
1176 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1178 RECORD_LAYER rlayer;
1180 /* Default password callback. */
1181 pem_password_cb *default_passwd_callback;
1183 /* Default password callback user data. */
1184 void *default_passwd_callback_userdata;
1186 /* Async Job info */
1191 typedef struct ssl3_state_st {
1193 int read_mac_secret_size;
1194 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1195 int write_mac_secret_size;
1196 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1197 unsigned char server_random[SSL3_RANDOM_SIZE];
1198 unsigned char client_random[SSL3_RANDOM_SIZE];
1199 /* flags for countermeasure against known-IV weakness */
1200 int need_empty_fragments;
1201 int empty_fragment_done;
1202 /* used during startup, digest all incoming/outgoing packets */
1203 BIO *handshake_buffer;
1205 * When handshake digest is determined, buffer is hashed and
1206 * freed and MD_CTX for the required digest is stored here.
1208 EVP_MD_CTX *handshake_dgst;
1210 * Set whenever an expected ChangeCipherSpec message is processed.
1211 * Unset when the peer's Finished message is received.
1212 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1214 int change_cipher_spec;
1218 * we allow one fatal and one warning alert to be outstanding, send close
1219 * alert via the warning alert
1222 unsigned char send_alert[2];
1224 * This flag is set when we should renegotiate ASAP, basically when there
1225 * is no more data in the read or write buffers
1228 int total_renegotiations;
1229 int num_renegotiations;
1230 int in_read_app_data;
1232 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1233 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1235 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1236 int peer_finish_md_len;
1237 unsigned long message_size;
1239 /* used to hold the new cipher we are going to use */
1240 const SSL_CIPHER *new_cipher;
1241 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1242 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1244 /* used for certificate requests */
1247 char ctype[SSL3_CT_NUMBER];
1248 STACK_OF(X509_NAME) *ca_names;
1249 int key_block_length;
1250 unsigned char *key_block;
1251 const EVP_CIPHER *new_sym_enc;
1252 const EVP_MD *new_hash;
1253 int new_mac_pkey_type;
1254 int new_mac_secret_size;
1255 # ifndef OPENSSL_NO_COMP
1256 const SSL_COMP *new_compression;
1258 char *new_compression;
1261 /* Raw values of the cipher list from a client */
1262 unsigned char *ciphers_raw;
1263 size_t ciphers_rawlen;
1264 /* Temporary storage for premaster secret */
1267 #ifndef OPENSSL_NO_PSK
1268 /* Temporary storage for PSK key */
1273 * signature algorithms peer reports: e.g. supported signature
1274 * algorithms extension for server or as part of a certificate
1275 * request for client.
1277 unsigned char *peer_sigalgs;
1278 /* Size of above array */
1279 size_t peer_sigalgslen;
1280 /* Digest peer uses for signing */
1281 const EVP_MD *peer_md;
1282 /* Array of digests used for signing */
1283 const EVP_MD *md[SSL_PKEY_NUM];
1285 * Set if corresponding CERT_PKEY can be used with current
1286 * SSL session: e.g. appropriate curve, signature algorithms etc.
1287 * If zero it can't be used at all.
1289 uint32_t valid_flags[SSL_PKEY_NUM];
1291 * For servers the following masks are for the key and auth algorithms
1292 * that are supported by the certs below. For clients they are masks of
1293 * *disabled* algorithms based on the current session.
1301 /* Connection binding to prevent renegotiation attacks */
1302 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1303 unsigned char previous_client_finished_len;
1304 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1305 unsigned char previous_server_finished_len;
1306 int send_connection_binding; /* TODOEKR */
1308 # ifndef OPENSSL_NO_NEXTPROTONEG
1310 * Set if we saw the Next Protocol Negotiation extension from our peer.
1312 int next_proto_neg_seen;
1316 * ALPN information (we are in the process of transitioning from NPN to
1321 * In a server these point to the selected ALPN protocol after the
1322 * ClientHello has been processed. In a client these contain the protocol
1323 * that the server selected once the ServerHello has been processed.
1325 unsigned char *alpn_selected;
1326 unsigned alpn_selected_len;
1328 # ifndef OPENSSL_NO_EC
1330 * This is set to true if we believe that this is a version of Safari
1331 * running on OS X 10.6 or newer. We wish to know this because Safari on
1332 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1334 char is_probably_safari;
1335 # endif /* !OPENSSL_NO_EC */
1337 /* For clients: peer temporary key */
1338 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1345 /* DTLS structures */
1347 # ifndef OPENSSL_NO_SCTP
1348 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1351 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1352 # define DTLS1_MAX_MTU_OVERHEAD 48
1355 * Flag used in message reuse to indicate the buffer contains the record
1356 * header as well as the the handshake message header.
1358 # define DTLS1_SKIP_RECORD_HEADER 2
1360 struct dtls1_retransmit_state {
1361 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1362 EVP_MD_CTX *write_hash; /* used for mac generation */
1363 COMP_CTX *compress; /* compression */
1364 SSL_SESSION *session;
1365 unsigned short epoch;
1368 struct hm_header_st {
1370 unsigned long msg_len;
1372 unsigned long frag_off;
1373 unsigned long frag_len;
1374 unsigned int is_ccs;
1375 struct dtls1_retransmit_state saved_retransmit_state;
1378 struct dtls1_timeout_st {
1379 /* Number of read timeouts so far */
1380 unsigned int read_timeouts;
1381 /* Number of write timeouts so far */
1382 unsigned int write_timeouts;
1383 /* Number of alerts received so far */
1384 unsigned int num_alerts;
1387 typedef struct hm_fragment_st {
1388 struct hm_header_st msg_header;
1389 unsigned char *fragment;
1390 unsigned char *reassembly;
1393 typedef struct dtls1_state_st {
1394 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1395 unsigned int cookie_len;
1396 unsigned int cookie_verified;
1398 /* handshake message numbers */
1399 unsigned short handshake_write_seq;
1400 unsigned short next_handshake_write_seq;
1401 unsigned short handshake_read_seq;
1403 /* Buffered handshake messages */
1404 pqueue buffered_messages;
1405 /* Buffered (sent) handshake records */
1406 pqueue sent_messages;
1408 unsigned int link_mtu; /* max on-the-wire DTLS packet size */
1409 unsigned int mtu; /* max DTLS packet size */
1410 struct hm_header_st w_msg_hdr;
1411 struct hm_header_st r_msg_hdr;
1412 struct dtls1_timeout_st timeout;
1414 * Indicates when the last handshake msg or heartbeat sent will timeout
1416 struct timeval next_timeout;
1417 /* Timeout duration */
1418 unsigned short timeout_duration;
1420 unsigned int retransmitting;
1421 # ifndef OPENSSL_NO_SCTP
1422 int shutdown_received;
1428 # ifndef OPENSSL_NO_EC
1430 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1432 # define EXPLICIT_PRIME_CURVE_TYPE 1
1433 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1434 # define NAMED_CURVE_TYPE 3
1435 # endif /* OPENSSL_NO_EC */
1437 typedef struct cert_pkey_st {
1439 EVP_PKEY *privatekey;
1440 /* Chain for this certificate */
1441 STACK_OF(X509) *chain;
1444 * serverinfo data for this certificate. The data is in TLS Extension
1445 * wire format, specifically it's a series of records like:
1446 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1448 * uint8_t data[length];
1450 unsigned char *serverinfo;
1451 size_t serverinfo_length;
1453 /* Retrieve Suite B flags */
1454 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1455 /* Uses to check strict mode: suite B modes are always strict */
1456 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1457 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1460 unsigned short ext_type;
1462 * Per-connection flags relating to this extension type: not used if
1463 * part of an SSL_CTX structure.
1466 custom_ext_add_cb add_cb;
1467 custom_ext_free_cb free_cb;
1469 custom_ext_parse_cb parse_cb;
1471 } custom_ext_method;
1473 /* ext_flags values */
1476 * Indicates an extension has been received. Used to check for unsolicited or
1477 * duplicate extensions.
1479 # define SSL_EXT_FLAG_RECEIVED 0x1
1481 * Indicates an extension has been sent: used to enable sending of
1482 * corresponding ServerHello extension.
1484 # define SSL_EXT_FLAG_SENT 0x2
1487 custom_ext_method *meths;
1489 } custom_ext_methods;
1491 typedef struct cert_st {
1492 /* Current active set */
1494 * ALWAYS points to an element of the pkeys array
1495 * Probably it would make more sense to store
1496 * an index, not a pointer.
1499 # ifndef OPENSSL_NO_DH
1501 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1504 /* Flags related to certificates */
1505 uint32_t cert_flags;
1506 CERT_PKEY pkeys[SSL_PKEY_NUM];
1508 * Certificate types (received or sent) in certificate request message.
1509 * On receive this is only set if number of certificate types exceeds
1512 unsigned char *ctypes;
1515 * suppported signature algorithms. When set on a client this is sent in
1516 * the client hello as the supported signature algorithms extension. For
1517 * servers it represents the signature algorithms we are willing to use.
1519 unsigned char *conf_sigalgs;
1520 /* Size of above array */
1521 size_t conf_sigalgslen;
1523 * Client authentication signature algorithms, if not set then uses
1524 * conf_sigalgs. On servers these will be the signature algorithms sent
1525 * to the client in a cerificate request for TLS 1.2. On a client this
1526 * represents the signature algortithms we are willing to use for client
1529 unsigned char *client_sigalgs;
1530 /* Size of above array */
1531 size_t client_sigalgslen;
1533 * Signature algorithms shared by client and server: cached because these
1534 * are used most often.
1536 TLS_SIGALGS *shared_sigalgs;
1537 size_t shared_sigalgslen;
1539 * Certificate setup callback: if set is called whenever a certificate
1540 * may be required (client or server). the callback can then examine any
1541 * appropriate parameters and setup any certificates required. This
1542 * allows advanced applications to select certificates on the fly: for
1543 * example based on supported signature algorithms or curves.
1545 int (*cert_cb) (SSL *ssl, void *arg);
1548 * Optional X509_STORE for chain building or certificate validation If
1549 * NULL the parent SSL_CTX store is used instead.
1551 X509_STORE *chain_store;
1552 X509_STORE *verify_store;
1553 /* Custom extension methods for server and client */
1554 custom_ext_methods cli_ext;
1555 custom_ext_methods srv_ext;
1556 /* Security callback */
1557 int (*sec_cb) (SSL *s, SSL_CTX *ctx, int op, int bits, int nid,
1558 void *other, void *ex);
1559 /* Security level */
1562 #ifndef OPENSSL_NO_PSK
1563 /* If not NULL psk identity hint to use for servers */
1564 char *psk_identity_hint;
1566 int references; /* >1 only if SSL_copy_session_id is used */
1569 /* Structure containing decoded values of signature algorithms extension */
1570 struct tls_sigalgs_st {
1571 /* NID of hash algorithm */
1573 /* NID of signature algorithm */
1575 /* Combined hash and signature NID */
1576 int signandhash_nid;
1577 /* Raw values used in extension */
1578 unsigned char rsign;
1579 unsigned char rhash;
1590 * #define ABORT_DEBUG
1593 * #define PKT_DEBUG 1
1599 * #define DES_OFB_DEBUG
1608 * #define IDEA_DEBUG
1611 # define FP_ICC (int (*)(const void *,const void *))
1614 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1615 * of a mess of functions, but hell, think of it as an opaque structure :-)
1617 typedef struct ssl3_enc_method {
1618 int (*enc) (SSL *, int);
1619 int (*mac) (SSL *, unsigned char *, int);
1620 int (*setup_key_block) (SSL *);
1621 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1623 int (*change_cipher_state) (SSL *, int);
1624 int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
1625 int finish_mac_length;
1626 const char *client_finished_label;
1627 int client_finished_label_len;
1628 const char *server_finished_label;
1629 int server_finished_label_len;
1630 int (*alert_value) (int);
1631 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1632 const char *, size_t,
1633 const unsigned char *, size_t,
1635 /* Various flags indicating protocol version requirements */
1637 /* Handshake header length */
1639 /* Set the handshake header */
1640 int (*set_handshake_header) (SSL *s, int type, unsigned long len);
1641 /* Write out handshake message */
1642 int (*do_write) (SSL *s);
1645 # define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
1646 # define ssl_handshake_start(s) \
1647 (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
1648 # define ssl_set_handshake_header(s, htype, len) \
1649 s->method->ssl3_enc->set_handshake_header(s, htype, len)
1650 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1652 /* Values for enc_flags */
1654 /* Uses explicit IV for CBC mode */
1655 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1656 /* Uses signature algorithms extension */
1657 # define SSL_ENC_FLAG_SIGALGS 0x2
1658 /* Uses SHA256 default PRF */
1659 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1661 # define SSL_ENC_FLAG_DTLS 0x8
1663 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1664 * apply to others in future.
1666 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1668 # ifndef OPENSSL_NO_COMP
1669 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1670 typedef struct ssl3_comp_st {
1671 int comp_id; /* The identifier byte for this compression
1673 char *name; /* Text name used for the compression type */
1674 COMP_METHOD *method; /* The method :-) */
1678 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
1679 OPENSSL_EXTERN const SSL_CIPHER ssl3_ciphers[];
1681 SSL_METHOD *ssl_bad_method(int ver);
1683 extern const SSL3_ENC_METHOD TLSv1_enc_data;
1684 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
1685 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
1686 extern const SSL3_ENC_METHOD SSLv3_enc_data;
1687 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
1688 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
1691 * Flags for SSL methods
1693 #define SSL_METHOD_NO_FIPS (1U<<0)
1694 #define SSL_METHOD_NO_SUITEB (1U<<1)
1696 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
1697 s_connect, s_get_meth, enc_data) \
1698 const SSL_METHOD *func_name(void) \
1700 static const SSL_METHOD func_name##_data= { \
1714 ssl3_renegotiate_check, \
1717 ssl3_dispatch_alert, \
1720 ssl3_get_cipher_by_char, \
1721 ssl3_put_cipher_by_char, \
1726 tls1_default_timeout, \
1728 ssl_undefined_void_function, \
1729 ssl3_callback_ctrl, \
1730 ssl3_ctx_callback_ctrl, \
1732 return &func_name##_data; \
1735 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
1736 const SSL_METHOD *func_name(void) \
1738 static const SSL_METHOD func_name##_data= { \
1740 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
1752 ssl3_renegotiate_check, \
1755 ssl3_dispatch_alert, \
1758 ssl3_get_cipher_by_char, \
1759 ssl3_put_cipher_by_char, \
1764 ssl3_default_timeout, \
1766 ssl_undefined_void_function, \
1767 ssl3_callback_ctrl, \
1768 ssl3_ctx_callback_ctrl, \
1770 return &func_name##_data; \
1773 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
1774 s_connect, s_get_meth, enc_data) \
1775 const SSL_METHOD *func_name(void) \
1777 static const SSL_METHOD func_name##_data= { \
1791 ssl3_renegotiate_check, \
1793 dtls1_write_app_data_bytes, \
1794 dtls1_dispatch_alert, \
1797 ssl3_get_cipher_by_char, \
1798 ssl3_put_cipher_by_char, \
1803 dtls1_default_timeout, \
1805 ssl_undefined_void_function, \
1806 ssl3_callback_ctrl, \
1807 ssl3_ctx_callback_ctrl, \
1809 return &func_name##_data; \
1812 struct openssl_ssl_test_functions {
1813 int (*p_ssl_init_wbio_buffer) (SSL *s, int push);
1814 int (*p_ssl3_setup_buffers) (SSL *s);
1815 int (*p_tls1_process_heartbeat) (SSL *s,
1816 unsigned char *p, unsigned int length);
1817 int (*p_dtls1_process_heartbeat) (SSL *s,
1818 unsigned char *p, unsigned int length);
1821 # ifndef OPENSSL_UNIT_TEST
1823 void ssl_clear_cipher_ctx(SSL *s);
1824 int ssl_clear_bad_session(SSL *s);
1825 __owur CERT *ssl_cert_new(void);
1826 __owur CERT *ssl_cert_dup(CERT *cert);
1827 void ssl_cert_clear_certs(CERT *c);
1828 void ssl_cert_free(CERT *c);
1829 __owur int ssl_get_new_session(SSL *s, int session);
1830 __owur int ssl_get_prev_session(SSL *s, const PACKET *ext,
1831 const PACKET *session_id);
1832 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
1833 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
1834 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
1835 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1836 const SSL_CIPHER *const *bp);
1837 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
1838 STACK_OF(SSL_CIPHER) **pref,
1839 STACK_OF(SSL_CIPHER) **sorted,
1840 const char *rule_str, CERT *c);
1841 void ssl_update_cache(SSL *s, int mode);
1842 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
1843 const EVP_MD **md, int *mac_pkey_type,
1844 int *mac_secret_size, SSL_COMP **comp, int use_etm);
1845 __owur int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
1846 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr);
1847 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
1848 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
1849 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
1850 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
1851 __owur int ssl_cert_select_current(CERT *c, X509 *x);
1852 __owur int ssl_cert_set_current(CERT *c, long arg);
1853 __owur X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
1854 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg),
1857 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
1858 __owur int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
1859 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
1860 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
1862 __owur int ssl_security(SSL *s, int op, int bits, int nid, void *other);
1863 __owur int ssl_ctx_security(SSL_CTX *ctx, int op, int bits, int nid, void *other);
1865 int ssl_undefined_function(SSL *s);
1866 __owur int ssl_undefined_void_function(void);
1867 __owur int ssl_undefined_const_function(const SSL *s);
1868 __owur CERT_PKEY *ssl_get_server_send_pkey(SSL *s);
1869 __owur int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
1870 size_t *serverinfo_length);
1871 __owur EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
1872 __owur int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
1873 void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher);
1874 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
1875 __owur int ssl_verify_alarm_type(long type);
1876 void ssl_load_ciphers(void);
1877 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
1878 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
1880 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm, int nid);
1881 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey);
1882 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
1884 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
1885 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1886 void ssl3_init_finished_mac(SSL *s);
1887 __owur int ssl3_setup_key_block(SSL *s);
1888 __owur int ssl3_change_cipher_state(SSL *s, int which);
1889 void ssl3_cleanup_key_block(SSL *s);
1890 __owur int ssl3_do_write(SSL *s, int type);
1891 int ssl3_send_alert(SSL *s, int level, int desc);
1892 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
1893 unsigned char *p, int len);
1894 __owur int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
1895 __owur int ssl3_num_ciphers(void);
1896 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
1897 int ssl3_renegotiate(SSL *ssl);
1898 int ssl3_renegotiate_check(SSL *ssl);
1899 __owur int ssl3_dispatch_alert(SSL *s);
1900 __owur int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
1902 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
1903 void ssl3_free_digest_list(SSL *s);
1904 __owur unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
1905 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
1906 STACK_OF(SSL_CIPHER) *clnt,
1907 STACK_OF(SSL_CIPHER) *srvr);
1908 __owur int ssl3_digest_cached_records(SSL *s, int keep);
1909 __owur int ssl3_new(SSL *s);
1910 void ssl3_free(SSL *s);
1911 __owur int ssl3_read(SSL *s, void *buf, int len);
1912 __owur int ssl3_peek(SSL *s, void *buf, int len);
1913 __owur int ssl3_write(SSL *s, const void *buf, int len);
1914 __owur int ssl3_shutdown(SSL *s);
1915 void ssl3_clear(SSL *s);
1916 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
1917 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
1918 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1919 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
1921 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
1922 __owur long ssl3_default_timeout(void);
1924 __owur int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
1925 __owur int ssl3_handshake_write(SSL *s);
1927 __owur int ssl_allow_compression(SSL *s);
1929 __owur int ssl_set_client_hello_version(SSL *s);
1930 __owur int ssl_check_version_downgrade(SSL *s);
1931 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
1932 __owur int ssl_choose_server_version(SSL *s);
1933 __owur int ssl_choose_client_version(SSL *s, int version);
1935 __owur long tls1_default_timeout(void);
1936 __owur int dtls1_do_write(SSL *s, int type);
1937 void dtls1_set_message_header(SSL *s,
1938 unsigned char *p, unsigned char mt,
1940 unsigned long frag_off,
1941 unsigned long frag_len);
1943 __owur int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1945 __owur int dtls1_read_failed(SSL *s, int code);
1946 __owur int dtls1_buffer_message(SSL *s, int ccs);
1947 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq,
1948 unsigned long frag_off, int *found);
1949 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1950 int dtls1_retransmit_buffered_messages(SSL *s);
1951 void dtls1_clear_record_buffer(SSL *s);
1952 void dtls1_get_message_header(unsigned char *data,
1953 struct hm_header_st *msg_hdr);
1954 __owur long dtls1_default_timeout(void);
1955 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
1956 __owur int dtls1_check_timeout_num(SSL *s);
1957 __owur int dtls1_handle_timeout(SSL *s);
1958 __owur const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1959 void dtls1_start_timer(SSL *s);
1960 void dtls1_stop_timer(SSL *s);
1961 __owur int dtls1_is_timer_expired(SSL *s);
1962 void dtls1_double_timeout(SSL *s);
1963 __owur unsigned int dtls_raw_hello_verify_request(unsigned char *buf,
1964 unsigned char *cookie,
1965 unsigned char cookie_len);
1966 __owur int dtls1_send_newsession_ticket(SSL *s);
1967 __owur unsigned int dtls1_min_mtu(SSL *s);
1968 void dtls1_hm_fragment_free(hm_fragment *frag);
1969 __owur int dtls1_query_mtu(SSL *s);
1971 __owur int tls1_new(SSL *s);
1972 void tls1_free(SSL *s);
1973 void tls1_clear(SSL *s);
1974 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1975 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1977 __owur int dtls1_new(SSL *s);
1978 void dtls1_free(SSL *s);
1979 void dtls1_clear(SSL *s);
1980 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1981 __owur int dtls1_shutdown(SSL *s);
1983 __owur int dtls1_dispatch_alert(SSL *s);
1985 __owur int ssl_init_wbio_buffer(SSL *s, int push);
1986 void ssl_free_wbio_buffer(SSL *s);
1988 __owur int tls1_change_cipher_state(SSL *s, int which);
1989 __owur int tls1_setup_key_block(SSL *s);
1990 __owur int tls1_final_finish_mac(SSL *s,
1991 const char *str, int slen, unsigned char *p);
1992 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
1993 unsigned char *p, int len);
1994 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1995 const char *label, size_t llen,
1996 const unsigned char *p, size_t plen,
1998 __owur int tls1_alert_code(int code);
1999 __owur int ssl3_alert_code(int code);
2000 __owur int ssl_ok(SSL *s);
2002 # ifndef OPENSSL_NO_EC
2003 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2006 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2008 # ifndef OPENSSL_NO_EC
2009 __owur int tls1_ec_curve_id2nid(int curve_id);
2010 __owur int tls1_ec_nid2curve_id(int nid);
2011 __owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
2012 __owur int tls1_shared_curve(SSL *s, int nmatch);
2013 __owur int tls1_set_curves(unsigned char **pext, size_t *pextlen,
2014 int *curves, size_t ncurves);
2015 __owur int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
2017 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2018 # endif /* OPENSSL_NO_EC */
2020 __owur int tls1_shared_list(SSL *s,
2021 const unsigned char *l1, size_t l1len,
2022 const unsigned char *l2, size_t l2len, int nmatch);
2023 __owur unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
2024 unsigned char *limit, int *al);
2025 __owur unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
2026 unsigned char *limit, int *al);
2027 __owur int ssl_parse_clienthello_tlsext(SSL *s, PACKET *pkt);
2028 void ssl_set_default_md(SSL *s);
2029 __owur int tls1_set_server_sigalgs(SSL *s);
2030 __owur int ssl_check_clienthello_tlsext_late(SSL *s);
2031 __owur int ssl_parse_serverhello_tlsext(SSL *s, PACKET *pkt);
2032 __owur int ssl_prepare_clienthello_tlsext(SSL *s);
2033 __owur int ssl_prepare_serverhello_tlsext(SSL *s);
2035 # ifndef OPENSSL_NO_HEARTBEATS
2036 __owur int tls1_heartbeat(SSL *s);
2037 __owur int dtls1_heartbeat(SSL *s);
2038 __owur int tls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
2039 __owur int dtls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
2042 __owur int tls_check_serverhello_tlsext_early(SSL *s, const PACKET *ext,
2043 const PACKET *session_id,
2046 __owur int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
2048 __owur int tls12_get_sigid(const EVP_PKEY *pk);
2049 __owur const EVP_MD *tls12_get_hash(unsigned char hash_alg);
2050 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2052 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2053 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
2054 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2056 void tls1_set_cert_validity(SSL *s);
2058 # ifndef OPENSSL_NO_DH
2059 __owur DH *ssl_get_auto_dh(SSL *s);
2062 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2063 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, int vfy);
2065 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2066 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2067 __owur int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2069 __owur int ssl_parse_serverhello_renegotiate_ext(SSL *s, PACKET *pkt,
2071 __owur int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2073 __owur int ssl_parse_clienthello_renegotiate_ext(SSL *s, PACKET *pkt, int *al);
2074 __owur long ssl_get_algorithm2(SSL *s);
2075 __owur size_t tls12_copy_sigalgs(SSL *s, unsigned char *out,
2076 const unsigned char *psig, size_t psiglen);
2077 __owur int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize);
2078 __owur int tls1_process_sigalgs(SSL *s);
2079 __owur size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
2080 __owur int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s,
2081 const unsigned char *sig, EVP_PKEY *pkey);
2082 void ssl_set_client_disabled(SSL *s);
2083 __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op);
2085 __owur int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2087 __owur int ssl_parse_clienthello_use_srtp_ext(SSL *s, PACKET *pkt, int *al);
2088 __owur int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2090 __owur int ssl_parse_serverhello_use_srtp_ext(SSL *s, PACKET *pkt, int *al);
2092 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen);
2093 __owur const EVP_MD *ssl_md(int idx);
2094 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2095 __owur const EVP_MD *ssl_prf_md(SSL *s);
2098 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2099 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2100 unsigned char *md_out,
2101 size_t *md_out_size,
2102 const unsigned char header[13],
2103 const unsigned char *data,
2104 size_t data_plus_mac_size,
2105 size_t data_plus_mac_plus_padding_size,
2106 const unsigned char *mac_secret,
2107 unsigned mac_secret_length, char is_sslv3);
2109 void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
2110 EVP_MD_CTX *mac_ctx, const unsigned char *data,
2111 size_t data_len, size_t orig_len);
2113 __owur int srp_generate_server_master_secret(SSL *s);
2114 __owur int srp_generate_client_master_secret(SSL *s);
2115 __owur int srp_verify_server_param(SSL *s, int *al);
2119 void custom_ext_init(custom_ext_methods *meths);
2121 __owur int custom_ext_parse(SSL *s, int server,
2122 unsigned int ext_type,
2123 const unsigned char *ext_data, size_t ext_size, int *al);
2124 __owur int custom_ext_add(SSL *s, int server,
2125 unsigned char **pret, unsigned char *limit, int *al);
2127 __owur int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src);
2128 void custom_exts_free(custom_ext_methods *exts);
2132 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2133 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2134 # define tls1_process_heartbeat SSL_test_functions()->p_tls1_process_heartbeat
2135 # define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat