2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
42 #ifndef HEADER_SSL_LOCL_H
43 # define HEADER_SSL_LOCL_H
50 # if defined(__unix) || defined(__unix__)
51 # include <sys/time.h> /* struct timeval for DTLS */
54 # include <openssl/buffer.h>
55 # include <openssl/comp.h>
56 # include <openssl/bio.h>
57 # include <openssl/stack.h>
58 # include <openssl/rsa.h>
59 # include <openssl/dsa.h>
60 # include <openssl/err.h>
61 # include <openssl/ssl.h>
62 # include <openssl/async.h>
63 # include <openssl/symhacks.h>
64 # include <openssl/ct.h>
65 # include "record/record.h"
66 # include "statem/statem.h"
67 # include "packet_locl.h"
68 # include "internal/dane.h"
69 # include "internal/refcount.h"
71 # ifdef OPENSSL_BUILD_SHLIBSSL
72 # undef OPENSSL_EXTERN
73 # define OPENSSL_EXTERN OPENSSL_EXPORT
76 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
77 l|=(((unsigned long)(*((c)++)))<< 8), \
78 l|=(((unsigned long)(*((c)++)))<<16), \
79 l|=(((unsigned long)(*((c)++)))<<24))
81 /* NOTE - c is not incremented as per c2l */
82 # define c2ln(c,l1,l2,n) { \
86 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
87 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
88 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
89 case 5: l2|=((unsigned long)(*(--(c)))); \
90 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
91 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
92 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
93 case 1: l1|=((unsigned long)(*(--(c)))); \
97 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
98 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>24)&0xff))
102 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
103 l|=((unsigned long)(*((c)++)))<<16, \
104 l|=((unsigned long)(*((c)++)))<< 8, \
105 l|=((unsigned long)(*((c)++))))
107 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
108 l|=((uint64_t)(*((c)++)))<<48, \
109 l|=((uint64_t)(*((c)++)))<<40, \
110 l|=((uint64_t)(*((c)++)))<<32, \
111 l|=((uint64_t)(*((c)++)))<<24, \
112 l|=((uint64_t)(*((c)++)))<<16, \
113 l|=((uint64_t)(*((c)++)))<< 8, \
114 l|=((uint64_t)(*((c)++))))
117 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
118 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
119 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
120 *((c)++)=(unsigned char)(((l) )&0xff))
122 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
123 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
124 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
125 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
126 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
127 *((c)++)=(unsigned char)(((l) )&0xff))
129 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
130 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
131 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
132 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
133 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
134 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
135 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
136 *((c)++)=(unsigned char)(((l) )&0xff))
138 /* NOTE - c is not incremented as per l2c */
139 # define l2cn(l1,l2,c,n) { \
142 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
143 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
144 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
145 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
146 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
147 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
148 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
149 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
153 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
154 (((unsigned int)((c)[1])) )),(c)+=2)
155 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
156 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
158 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
159 (((unsigned long)((c)[1]))<< 8)| \
160 (((unsigned long)((c)[2])) )),(c)+=3)
162 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
163 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
164 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
167 * DTLS version numbers are strange because they're inverted. Except for
168 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
170 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
171 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
172 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
173 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
174 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
178 * Define the Bitmasks for SSL_CIPHER.algorithms.
179 * This bits are used packed as dense as possible. If new methods/ciphers
180 * etc will be added, the bits a likely to change, so this information
181 * is for internal library use only, even though SSL_CIPHER.algorithms
182 * can be publicly accessed.
183 * Use the according functions for cipher management instead.
185 * The bit mask handling in the selection and sorting scheme in
186 * ssl_create_cipher_list() has only limited capabilities, reflecting
187 * that the different entities within are mutually exclusive:
188 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
191 /* Bits for algorithm_mkey (key exchange algorithm) */
192 /* RSA key exchange */
193 # define SSL_kRSA 0x00000001U
194 /* tmp DH key no DH cert */
195 # define SSL_kDHE 0x00000002U
197 # define SSL_kEDH SSL_kDHE
199 # define SSL_kECDHE 0x00000004U
201 # define SSL_kEECDH SSL_kECDHE
203 # define SSL_kPSK 0x00000008U
204 /* GOST key exchange */
205 # define SSL_kGOST 0x00000010U
207 # define SSL_kSRP 0x00000020U
209 # define SSL_kRSAPSK 0x00000040U
210 # define SSL_kECDHEPSK 0x00000080U
211 # define SSL_kDHEPSK 0x00000100U
215 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
217 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
218 # define SSL_kANY 0x00000000U
220 /* Bits for algorithm_auth (server authentication) */
222 # define SSL_aRSA 0x00000001U
224 # define SSL_aDSS 0x00000002U
225 /* no auth (i.e. use ADH or AECDH) */
226 # define SSL_aNULL 0x00000004U
228 # define SSL_aECDSA 0x00000008U
230 # define SSL_aPSK 0x00000010U
231 /* GOST R 34.10-2001 signature auth */
232 # define SSL_aGOST01 0x00000020U
234 # define SSL_aSRP 0x00000040U
235 /* GOST R 34.10-2012 signature auth */
236 # define SSL_aGOST12 0x00000080U
237 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
238 # define SSL_aANY 0x00000000U
240 /* Bits for algorithm_enc (symmetric encryption) */
241 # define SSL_DES 0x00000001U
242 # define SSL_3DES 0x00000002U
243 # define SSL_RC4 0x00000004U
244 # define SSL_RC2 0x00000008U
245 # define SSL_IDEA 0x00000010U
246 # define SSL_eNULL 0x00000020U
247 # define SSL_AES128 0x00000040U
248 # define SSL_AES256 0x00000080U
249 # define SSL_CAMELLIA128 0x00000100U
250 # define SSL_CAMELLIA256 0x00000200U
251 # define SSL_eGOST2814789CNT 0x00000400U
252 # define SSL_SEED 0x00000800U
253 # define SSL_AES128GCM 0x00001000U
254 # define SSL_AES256GCM 0x00002000U
255 # define SSL_AES128CCM 0x00004000U
256 # define SSL_AES256CCM 0x00008000U
257 # define SSL_AES128CCM8 0x00010000U
258 # define SSL_AES256CCM8 0x00020000U
259 # define SSL_eGOST2814789CNT12 0x00040000U
260 # define SSL_CHACHA20POLY1305 0x00080000U
262 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
263 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
264 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
265 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
266 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
268 /* Bits for algorithm_mac (symmetric authentication) */
270 # define SSL_MD5 0x00000001U
271 # define SSL_SHA1 0x00000002U
272 # define SSL_GOST94 0x00000004U
273 # define SSL_GOST89MAC 0x00000008U
274 # define SSL_SHA256 0x00000010U
275 # define SSL_SHA384 0x00000020U
276 /* Not a real MAC, just an indication it is part of cipher */
277 # define SSL_AEAD 0x00000040U
278 # define SSL_GOST12_256 0x00000080U
279 # define SSL_GOST89MAC12 0x00000100U
280 # define SSL_GOST12_512 0x00000200U
283 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
284 * sure to update this constant too
287 # define SSL_MD_MD5_IDX 0
288 # define SSL_MD_SHA1_IDX 1
289 # define SSL_MD_GOST94_IDX 2
290 # define SSL_MD_GOST89MAC_IDX 3
291 # define SSL_MD_SHA256_IDX 4
292 # define SSL_MD_SHA384_IDX 5
293 # define SSL_MD_GOST12_256_IDX 6
294 # define SSL_MD_GOST89MAC12_IDX 7
295 # define SSL_MD_GOST12_512_IDX 8
296 # define SSL_MD_MD5_SHA1_IDX 9
297 # define SSL_MD_SHA224_IDX 10
298 # define SSL_MD_SHA512_IDX 11
299 # define SSL_MAX_DIGEST 12
301 /* Bits for algorithm2 (handshake digests and other extra flags) */
303 /* Bits 0-7 are handshake MAC */
304 # define SSL_HANDSHAKE_MAC_MASK 0xFF
305 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
306 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
307 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
308 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
309 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
310 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
311 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
313 /* Bits 8-15 bits are PRF */
314 # define TLS1_PRF_DGST_SHIFT 8
315 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
316 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
317 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
318 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
319 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
320 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
321 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
324 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
325 * goes into algorithm2)
327 # define TLS1_STREAM_MAC 0x10000
329 # define SSL_STRONG_MASK 0x0000001FU
330 # define SSL_DEFAULT_MASK 0X00000020U
332 # define SSL_STRONG_NONE 0x00000001U
333 # define SSL_LOW 0x00000002U
334 # define SSL_MEDIUM 0x00000004U
335 # define SSL_HIGH 0x00000008U
336 # define SSL_FIPS 0x00000010U
337 # define SSL_NOT_DEFAULT 0x00000020U
339 /* we have used 0000003f - 26 bits left to go */
341 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
342 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
344 /* Check if an SSL structure is using DTLS */
345 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
347 /* Check if we are using TLSv1.3 */
348 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
349 && (s)->method->version >= TLS1_3_VERSION \
350 && (s)->method->version != TLS_ANY_VERSION)
352 # define SSL_TREAT_AS_TLS13(s) \
353 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
354 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY)
356 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0)
358 /* See if we need explicit IV */
359 # define SSL_USE_EXPLICIT_IV(s) \
360 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
362 * See if we use signature algorithms extension and signature algorithm
365 # define SSL_USE_SIGALGS(s) \
366 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
368 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
369 * apply to others in future.
371 # define SSL_USE_TLS1_2_CIPHERS(s) \
372 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
374 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
375 * flags because it may not be set to correct version yet.
377 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
378 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
379 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
381 * Determine if a client should send signature algorithms extension:
382 * as with TLS1.2 cipher we can't rely on method flags.
384 # define SSL_CLIENT_USE_SIGALGS(s) \
385 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
387 # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
388 # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
390 /* Mostly for SSLv3 */
391 # define SSL_PKEY_RSA 0
392 # define SSL_PKEY_DSA_SIGN 1
393 # define SSL_PKEY_ECC 2
394 # define SSL_PKEY_GOST01 3
395 # define SSL_PKEY_GOST12_256 4
396 # define SSL_PKEY_GOST12_512 5
397 # define SSL_PKEY_NUM 6
399 * Pseudo-constant. GOST cipher suites can use different certs for 1
400 * SSL_CIPHER. So let's see which one we have in fact.
402 # define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1
405 * TODO(TLS1.3) for now use SSL_PKEY_RSA keys for PSS
408 #define SSL_PKEY_RSA_PSS_SIGN SSL_PKEY_RSA
411 * SSL_kRSA <- RSA_ENC
412 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
413 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
414 * SSL_aRSA <- RSA_ENC | RSA_SIGN
415 * SSL_aDSS <- DSA_SIGN
419 #define CERT_INVALID 0
420 #define CERT_PUBLIC_KEY 1
421 #define CERT_PRIVATE_KEY 2
424 /* CipherSuite length. SSLv3 and all TLS versions. */
425 # define TLS_CIPHER_LEN 2
426 /* used to hold info on the particular ciphers used */
427 struct ssl_cipher_st {
429 const char *name; /* text name */
430 uint32_t id; /* id, 4 bytes, first is version */
432 * changed in 1.0.0: these four used to be portions of a single value
435 uint32_t algorithm_mkey; /* key exchange algorithm */
436 uint32_t algorithm_auth; /* server authentication */
437 uint32_t algorithm_enc; /* symmetric encryption */
438 uint32_t algorithm_mac; /* symmetric authentication */
439 int min_tls; /* minimum SSL/TLS protocol version */
440 int max_tls; /* maximum SSL/TLS protocol version */
441 int min_dtls; /* minimum DTLS protocol version */
442 int max_dtls; /* maximum DTLS protocol version */
443 uint32_t algo_strength; /* strength and export flags */
444 uint32_t algorithm2; /* Extra flags */
445 int32_t strength_bits; /* Number of bits really used */
446 uint32_t alg_bits; /* Number of bits for algorithm */
449 /* Used to hold SSL/TLS functions */
450 struct ssl_method_st {
454 int (*ssl_new) (SSL *s);
455 void (*ssl_clear) (SSL *s);
456 void (*ssl_free) (SSL *s);
457 int (*ssl_accept) (SSL *s);
458 int (*ssl_connect) (SSL *s);
459 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
460 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
461 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
462 int (*ssl_shutdown) (SSL *s);
463 int (*ssl_renegotiate) (SSL *s);
464 int (*ssl_renegotiate_check) (SSL *s, int);
465 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
466 unsigned char *buf, size_t len, int peek,
468 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
470 int (*ssl_dispatch_alert) (SSL *s);
471 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
472 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
473 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
474 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
476 size_t (*ssl_pending) (const SSL *s);
477 int (*num_ciphers) (void);
478 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
479 long (*get_timeout) (void);
480 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
481 int (*ssl_version) (void);
482 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
483 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
487 * Lets make this into an ASN.1 type structure as follows
488 * SSL_SESSION_ID ::= SEQUENCE {
489 * version INTEGER, -- structure version number
490 * SSLversion INTEGER, -- SSL version number
491 * Cipher OCTET STRING, -- the 3 byte cipher ID
492 * Session_ID OCTET STRING, -- the Session ID
493 * Master_key OCTET STRING, -- the master key
494 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
495 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
496 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
497 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
498 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
499 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
500 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
501 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
502 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
503 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
504 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
505 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
506 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
507 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
509 * Look in ssl/ssl_asn1.c for more details
510 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
512 struct ssl_session_st {
513 int ssl_version; /* what ssl version session info is being kept
515 size_t master_key_length;
518 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
521 unsigned char master_key[TLS13_MAX_RESUMPTION_MASTER_LENGTH];
522 /* session_id - valid? */
523 size_t session_id_length;
524 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
526 * this is used to determine whether the session is being reused in the
527 * appropriate context. It is up to the application to set this, via
530 size_t sid_ctx_length;
531 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
532 # ifndef OPENSSL_NO_PSK
533 char *psk_identity_hint;
537 * Used to indicate that session resumption is not allowed. Applications
538 * can also set this bit for a new session via not_resumable_session_cb
539 * to disable session caching and tickets.
542 /* This is the cert and type for the other end. */
545 /* Certificate chain peer sent. */
546 STACK_OF(X509) *peer_chain;
548 * when app_verify_callback accepts a session where the peer's
549 * certificate is not ok, we must remember the error for session reuse:
551 long verify_result; /* only for servers */
552 CRYPTO_REF_COUNT references;
555 unsigned int compress_meth; /* Need to lookup the method */
556 const SSL_CIPHER *cipher;
557 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
558 * load the 'cipher' structure */
559 STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
560 CRYPTO_EX_DATA ex_data; /* application specific data */
562 * These are used to make removal of session-ids more efficient and to
563 * implement a maximum cache size.
565 struct ssl_session_st *prev, *next;
569 # ifndef OPENSSL_NO_EC
570 size_t ecpointformats_len;
571 unsigned char *ecpointformats; /* peer's list */
572 size_t supportedgroups_len;
573 unsigned char *supportedgroups; /* peer's list */
574 # endif /* OPENSSL_NO_EC */
576 unsigned char *tick; /* Session ticket */
577 size_t ticklen; /* Session ticket length */
578 /* Session lifetime hint in seconds */
579 unsigned long tick_lifetime_hint;
580 uint32_t tick_age_add;
582 /* Max number of bytes that can be sent as early data */
583 uint32_t max_early_data;
584 /* The ALPN protocol selected for this session */
585 unsigned char *alpn_selected;
586 size_t alpn_selected_len;
588 # ifndef OPENSSL_NO_SRP
595 /* Extended master secret support */
596 # define SSL_SESS_FLAG_EXTMS 0x1
598 # ifndef OPENSSL_NO_SRP
600 typedef struct srp_ctx_st {
601 /* param for all the callbacks */
603 /* set client Hello login callback */
604 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
605 /* set SRP N/g param callback for verification */
606 int (*SRP_verify_param_callback) (SSL *, void *);
607 /* set SRP client passwd callback */
608 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
610 BIGNUM *N, *g, *s, *B, *A;
614 unsigned long srp_Mask;
620 SSL_EARLY_DATA_NONE = 0,
621 SSL_EARLY_DATA_CONNECT_RETRY,
622 SSL_EARLY_DATA_CONNECTING,
623 SSL_EARLY_DATA_WRITE_RETRY,
624 SSL_EARLY_DATA_WRITING,
625 SSL_EARLY_DATA_UNAUTH_WRITING,
626 SSL_EARLY_DATA_FINISHED_WRITING,
627 SSL_EARLY_DATA_ACCEPT_RETRY,
628 SSL_EARLY_DATA_ACCEPTING,
629 SSL_EARLY_DATA_READ_RETRY,
630 SSL_EARLY_DATA_READING,
631 SSL_EARLY_DATA_FINISHED_READING
632 } SSL_EARLY_DATA_STATE;
635 * We check that the amount of unreadable early data doesn't exceed
636 * max_early_data. max_early_data is given in plaintext bytes. However if it is
637 * unreadable then we only know the number of ciphertext bytes. We also don't
638 * know how much the overhead should be because it depends on the ciphersuite.
639 * We make a small allowance. We assume 5 records of actual data plus the end
640 * of early data alert record. Each record has a tag and a content type byte.
641 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
642 * content of the alert record either which is 2 bytes.
644 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
647 * The allowance we have between the client's calculated ticket age and our own.
648 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
649 * client's age calculation is different by more than this than our own then we
650 * do not allow that ticket for early_data.
652 # define TICKET_AGE_ALLOWANCE (10 * 1000)
654 #define MAX_COMPRESSIONS_SIZE 255
662 typedef struct raw_extension_st {
663 /* Raw packet data for the extension */
665 /* Set to 1 if the extension is present or 0 otherwise */
667 /* Set to 1 if we have already parsed the extension or 0 otherwise */
669 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
675 unsigned int legacy_version;
676 unsigned char random[SSL3_RANDOM_SIZE];
677 size_t session_id_len;
678 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
679 size_t dtls_cookie_len;
680 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
682 size_t compressions_len;
683 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
685 size_t pre_proc_exts_len;
686 RAW_EXTENSION *pre_proc_exts;
689 DEFINE_LHASH_OF(SSL_SESSION);
690 /* Needed in ssl_cert.c */
691 DEFINE_LHASH_OF(X509_NAME);
693 # define TLSEXT_KEYNAME_LENGTH 16
696 const SSL_METHOD *method;
697 STACK_OF(SSL_CIPHER) *cipher_list;
698 /* same as above but sorted for lookup */
699 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
700 struct x509_store_st /* X509_STORE */ *cert_store;
701 LHASH_OF(SSL_SESSION) *sessions;
703 * Most session-ids that will be cached, default is
704 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
706 size_t session_cache_size;
707 struct ssl_session_st *session_cache_head;
708 struct ssl_session_st *session_cache_tail;
710 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
711 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
712 * means only SSL_accept which cache SSL_SESSIONS.
714 uint32_t session_cache_mode;
716 * If timeout is not 0, it is the default timeout value set when
717 * SSL_new() is called. This has been put in to make life easier to set
720 long session_timeout;
722 * If this callback is not null, it will be called each time a session id
723 * is added to the cache. If this function returns 1, it means that the
724 * callback will do a SSL_SESSION_free() when it has finished using it.
725 * Otherwise, on 0, it means the callback has finished with it. If
726 * remove_session_cb is not null, it will be called when a session-id is
727 * removed from the cache. After the call, OpenSSL will
728 * SSL_SESSION_free() it.
730 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
731 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
732 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
733 const unsigned char *data, int len,
736 int sess_connect; /* SSL new conn - started */
737 int sess_connect_renegotiate; /* SSL reneg - requested */
738 int sess_connect_good; /* SSL new conne/reneg - finished */
739 int sess_accept; /* SSL new accept - started */
740 int sess_accept_renegotiate; /* SSL reneg - requested */
741 int sess_accept_good; /* SSL accept/reneg - finished */
742 int sess_miss; /* session lookup misses */
743 int sess_timeout; /* reuse attempt on timeouted session */
744 int sess_cache_full; /* session removed due to full cache */
745 int sess_hit; /* session reuse actually done */
746 int sess_cb_hit; /* session-id that was not in the cache was
747 * passed back via the callback. This
748 * indicates that the application is supplying
749 * session-id's from other processes - spooky
753 CRYPTO_REF_COUNT references;
755 /* if defined, these override the X509_verify_cert() calls */
756 int (*app_verify_callback) (X509_STORE_CTX *, void *);
757 void *app_verify_arg;
759 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
760 * ('app_verify_callback' was called with just one argument)
763 /* Default password callback. */
764 pem_password_cb *default_passwd_callback;
766 /* Default password callback user data. */
767 void *default_passwd_callback_userdata;
769 /* get client cert callback */
770 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
772 /* cookie generate callback */
773 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
774 unsigned int *cookie_len);
776 /* verify cookie callback */
777 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
778 unsigned int cookie_len);
780 CRYPTO_EX_DATA ex_data;
782 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
783 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
785 STACK_OF(X509) *extra_certs;
786 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
788 /* Default values used when no per-SSL value is defined follow */
790 /* used if SSL's info_callback is NULL */
791 void (*info_callback) (const SSL *ssl, int type, int val);
794 * What we put in certificate_authorities extension for TLS 1.3
795 * (ClientHello and CertificateRequest) or just client cert requests for
798 STACK_OF(X509_NAME) *ca_names;
801 * Default values to use in SSL structures follow (these are copied by
807 int min_proto_version;
808 int max_proto_version;
809 size_t max_cert_list;
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 size_t 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;
832 # ifndef OPENSSL_NO_CT
833 CTLOG_STORE *ctlog_store; /* CT Log Store */
835 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
836 * If they are not, the connection should be aborted.
838 ssl_ct_validation_cb ct_validation_callback;
839 void *ct_validation_callback_arg;
843 * If we're using more than one pipeline how should we divide the data
844 * up between the pipes?
846 size_t split_send_fragment;
848 * Maximum amount of data to send in one fragment. actual record size can
849 * be more than this due to padding and MAC overheads.
851 size_t max_send_fragment;
853 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
854 size_t max_pipelines;
856 /* The default read buffer length to use (0 means not set) */
857 size_t default_read_buf_len;
859 # ifndef OPENSSL_NO_ENGINE
861 * Engine to pass requests for client certs to
863 ENGINE *client_cert_engine;
866 /* Early callback. Mostly for extensions, but not entirely. */
867 SSL_early_cb_fn early_cb;
870 /* TLS extensions. */
872 /* TLS extensions servername callback */
873 int (*servername_cb) (SSL *, int *, void *);
874 void *servername_arg;
875 /* RFC 4507 session ticket keys */
876 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
877 unsigned char tick_hmac_key[32];
878 unsigned char tick_aes_key[32];
879 /* Callback to support customisation of ticket key setting */
880 int (*ticket_key_cb) (SSL *ssl,
881 unsigned char *name, unsigned char *iv,
882 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
884 /* certificate status request info */
885 /* Callback for status request */
886 int (*status_cb) (SSL *ssl, void *arg);
888 /* ext status type used for CSR extension (OCSP Stapling) */
891 # ifndef OPENSSL_NO_EC
892 /* EC extension values inherited by SSL structure */
893 size_t ecpointformats_len;
894 unsigned char *ecpointformats;
895 size_t supportedgroups_len;
896 unsigned char *supportedgroups;
897 # endif /* OPENSSL_NO_EC */
900 * ALPN information (we are in the process of transitioning from NPN to
905 * For a server, this contains a callback function that allows the
906 * server to select the protocol for the connection.
907 * out: on successful return, this must point to the raw protocol
908 * name (without the length prefix).
909 * outlen: on successful return, this contains the length of |*out|.
910 * in: points to the client's list of supported protocols in
912 * inlen: the length of |in|.
914 int (*alpn_select_cb) (SSL *s,
915 const unsigned char **out,
916 unsigned char *outlen,
917 const unsigned char *in,
918 unsigned int inlen, void *arg);
919 void *alpn_select_cb_arg;
922 * For a client, this contains the list of supported protocols in wire
928 # ifndef OPENSSL_NO_NEXTPROTONEG
929 /* Next protocol negotiation information */
932 * For a server, this contains a callback function by which the set of
933 * advertised protocols can be provided.
935 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
936 void *npn_advertised_cb_arg;
938 * For a client, this contains a callback function that selects the next
939 * protocol from the list provided by the server.
941 SSL_CTX_npn_select_cb_func npn_select_cb;
942 void *npn_select_cb_arg;
946 # ifndef OPENSSL_NO_PSK
947 SSL_psk_client_cb_func psk_client_callback;
948 SSL_psk_server_cb_func psk_server_callback;
951 # ifndef OPENSSL_NO_SRP
952 SRP_CTX srp_ctx; /* ctx for SRP authentication */
955 /* Shared DANE context */
956 struct dane_ctx_st dane;
958 /* SRTP profiles we are willing to do from RFC 5764 */
959 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
961 * Callback for disabling session caching and ticket support on a session
962 * basis, depending on the chosen cipher.
964 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
969 * Callback for logging key material for use with debugging tools like
970 * Wireshark. The callback should log `line` followed by a newline.
972 SSL_CTX_keylog_cb_func keylog_callback;
974 /* The maximum number of bytes that can be sent as early data */
975 uint32_t max_early_data;
980 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
985 const SSL_METHOD *method;
987 * There are 2 BIO's even though they are normally both the same. This
988 * is so data can be read and written to different handlers
990 /* used by SSL_read */
992 /* used by SSL_write */
994 /* used during session-id reuse to concatenate messages */
997 * This holds a variable that indicates what we were doing when a 0 or -1
998 * is returned. This is needed for non-blocking IO so we know what
999 * request needs re-doing when in SSL_accept or SSL_connect
1002 int (*handshake_func) (SSL *);
1004 * Imagine that here's a boolean member "init" that is switched as soon
1005 * as SSL_set_{accept/connect}_state is called for the first time, so
1006 * that "state" and "handshake_func" are properly initialized. But as
1007 * handshake_func is == 0 until then, we use this test instead of an
1010 /* are we the server side? */
1013 * Generate a new session or reuse an old one.
1014 * NB: For servers, the 'new' session may actually be a previously
1015 * cached session or even the previous session unless
1016 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1019 /* don't send shutdown packets */
1021 /* we have shut things down, 0x01 sent, 0x02 for received */
1025 SSL_EARLY_DATA_STATE early_data_state;
1026 BUF_MEM *init_buf; /* buffer used during init */
1027 void *init_msg; /* pointer to handshake message body, set by
1028 * ssl3_get_message() */
1029 size_t init_num; /* amount read/written */
1030 size_t init_off; /* amount read/written */
1031 struct ssl3_state_st *s3; /* SSLv3 variables */
1032 struct dtls1_state_st *d1; /* DTLSv1 variables */
1033 /* callback that allows applications to peek at protocol messages */
1034 void (*msg_callback) (int write_p, int version, int content_type,
1035 const void *buf, size_t len, SSL *ssl, void *arg);
1036 void *msg_callback_arg;
1037 int hit; /* reusing a previous session */
1038 X509_VERIFY_PARAM *param;
1039 /* Per connection DANE state */
1042 STACK_OF(SSL_CIPHER) *cipher_list;
1043 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1045 * These are the ones being used, the ones in SSL_SESSION are the ones to
1046 * be 'copied' into these ones
1050 * The TLS1.3 secrets. The resumption master secret is stored in the
1053 unsigned char early_secret[EVP_MAX_MD_SIZE];
1054 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1055 unsigned char master_secret[EVP_MAX_MD_SIZE];
1056 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1057 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1058 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1059 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1060 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1061 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1062 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1063 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
1064 EVP_MD_CTX *read_hash; /* used for mac generation */
1065 COMP_CTX *compress; /* compression */
1066 COMP_CTX *expand; /* uncompress */
1067 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1068 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
1069 EVP_MD_CTX *write_hash; /* used for mac generation */
1070 /* Count of how many KeyUpdate messages we have received */
1071 unsigned int key_update_count;
1074 /* This is used to hold the server certificate used */
1075 struct cert_st /* CERT */ *cert;
1078 * The hash of all messages prior to the CertificateVerify, and the length
1081 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1082 size_t cert_verify_hash_len;
1084 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1085 int hello_retry_request;
1088 * the session_id_context is used to ensure sessions are only reused in
1089 * the appropriate context
1091 size_t sid_ctx_length;
1092 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1093 /* This can also be in the session once a session is established */
1094 SSL_SESSION *session;
1095 /* Default generate session ID callback. */
1096 GEN_SESSION_CB generate_session_id;
1099 * 0 don't care about verify failure.
1100 * 1 fail if verify fails
1102 uint32_t verify_mode;
1103 /* fail if callback returns 0 */
1104 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1105 /* optional informational callback */
1106 void (*info_callback) (const SSL *ssl, int type, int val);
1107 /* error bytes to be written */
1111 # ifndef OPENSSL_NO_PSK
1112 SSL_psk_client_cb_func psk_client_callback;
1113 SSL_psk_server_cb_func psk_server_callback;
1116 /* Verified chain of peer */
1117 STACK_OF(X509) *verified_chain;
1119 /* extra application data */
1120 CRYPTO_EX_DATA ex_data;
1121 /* for server side, keep the list of CA_dn we can use */
1122 STACK_OF(X509_NAME) *ca_names;
1123 CRYPTO_REF_COUNT references;
1124 /* protocol behaviour */
1128 int min_proto_version;
1129 int max_proto_version;
1130 size_t max_cert_list;
1133 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1134 * secret and SSLv3/TLS (<=1.2) rollback check
1138 * If we're using more than one pipeline how should we divide the data
1139 * up between the pipes?
1141 size_t split_send_fragment;
1143 * Maximum amount of data to send in one fragment. actual record size can
1144 * be more than this due to padding and MAC overheads.
1146 size_t max_send_fragment;
1147 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1148 size_t max_pipelines;
1151 /* TLS extension debug callback */
1152 void (*debug_cb)(SSL *s, int client_server, int type,
1153 const unsigned char *data, int len, void *arg);
1156 /* certificate status request info */
1157 /* Status type or -1 if no status type */
1159 /* Raw extension data, if seen */
1160 unsigned char *scts;
1161 /* Length of raw extension data, if seen */
1163 /* Expect OCSP CertificateStatus message */
1164 int status_expected;
1167 /* OCSP status request only */
1168 STACK_OF(OCSP_RESPID) *ids;
1169 X509_EXTENSIONS *exts;
1170 /* OCSP response received or to be sent */
1171 unsigned char *resp;
1175 /* RFC4507 session ticket expected to be received or sent */
1176 int ticket_expected;
1177 # ifndef OPENSSL_NO_EC
1178 size_t ecpointformats_len;
1180 unsigned char *ecpointformats;
1181 size_t supportedgroups_len;
1183 unsigned char *supportedgroups;
1184 # endif /* OPENSSL_NO_EC */
1185 /* TLS Session Ticket extension override */
1186 TLS_SESSION_TICKET_EXT *session_ticket;
1187 /* TLS Session Ticket extension callback */
1188 tls_session_ticket_ext_cb_fn session_ticket_cb;
1189 void *session_ticket_cb_arg;
1190 /* TLS pre-shared secret session resumption */
1191 tls_session_secret_cb_fn session_secret_cb;
1192 void *session_secret_cb_arg;
1194 * For a client, this contains the list of supported protocols in wire
1197 unsigned char *alpn;
1200 * Next protocol negotiation. For the client, this is the protocol that
1201 * we sent in NextProtocol and is set when handling ServerHello
1202 * extensions. For a server, this is the client's selected_protocol from
1203 * NextProtocol and is set when handling the NextProtocol message, before
1204 * the Finished message.
1209 /* The available PSK key exchange modes */
1212 /* Set to one if we have negotiated ETM */
1215 /* Are we expecting to receive early data? */
1217 /* Is the session suitable for early data? */
1220 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1221 unsigned char *tls13_cookie;
1222 size_t tls13_cookie_len;
1225 /* Parsed form of the ClientHello, kept around across early_cb calls. */
1226 CLIENTHELLO_MSG *clienthello;
1229 * no further mod of servername
1230 * 0 : call the servername extension callback.
1231 * 1 : prepare 2, allow last ack just after in server callback.
1232 * 2 : don't call servername callback, no ack in server hello
1234 int servername_done;
1235 # ifndef OPENSSL_NO_CT
1237 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1238 * If they are not, the connection should be aborted.
1240 ssl_ct_validation_cb ct_validation_callback;
1241 /* User-supplied argument that is passed to the ct_validation_callback */
1242 void *ct_validation_callback_arg;
1244 * Consolidated stack of SCTs from all sources.
1245 * Lazily populated by CT_get_peer_scts(SSL*)
1247 STACK_OF(SCT) *scts;
1248 /* Have we attempted to find/parse SCTs yet? */
1251 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1253 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1254 /* What's been chosen */
1255 SRTP_PROTECTION_PROFILE *srtp_profile;
1257 * 1 if we are renegotiating.
1258 * 2 if we are a server and are inside a handshake
1259 * (i.e. not just sending a HelloRequest)
1262 /* If sending a KeyUpdate is pending */
1264 # ifndef OPENSSL_NO_SRP
1265 /* ctx for SRP authentication */
1269 * Callback for disabling session caching and ticket support on a session
1270 * basis, depending on the chosen cipher.
1272 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1273 RECORD_LAYER rlayer;
1274 /* Default password callback. */
1275 pem_password_cb *default_passwd_callback;
1276 /* Default password callback user data. */
1277 void *default_passwd_callback_userdata;
1278 /* Async Job info */
1280 ASYNC_WAIT_CTX *waitctx;
1283 /* The maximum number of plaintext bytes that can be sent as early data */
1284 uint32_t max_early_data;
1286 * The number of bytes of early data received so far. If we accepted early
1287 * data then this is a count of the plaintext bytes. If we rejected it then
1288 * this is a count of the ciphertext bytes.
1290 uint32_t early_data_count;
1292 CRYPTO_RWLOCK *lock;
1296 * Structure containing table entry of values associated with the signature
1297 * algorithms (signature scheme) extension
1299 typedef struct sigalg_lookup_st {
1300 /* TLS 1.3 signature scheme name */
1302 /* Raw value used in extension */
1304 /* NID of hash algorithm */
1306 /* Index of hash algorithm */
1308 /* NID of signature algorithm */
1310 /* Index of signature algorithm */
1312 /* Combined hash and signature NID, if any */
1314 /* Required public key curve (ECDSA only) */
1318 typedef struct cert_pkey_st CERT_PKEY;
1320 typedef struct ssl3_state_st {
1322 size_t read_mac_secret_size;
1323 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1324 size_t write_mac_secret_size;
1325 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1326 unsigned char server_random[SSL3_RANDOM_SIZE];
1327 unsigned char client_random[SSL3_RANDOM_SIZE];
1328 /* flags for countermeasure against known-IV weakness */
1329 int need_empty_fragments;
1330 int empty_fragment_done;
1331 /* used during startup, digest all incoming/outgoing packets */
1332 BIO *handshake_buffer;
1334 * When handshake digest is determined, buffer is hashed and
1335 * freed and MD_CTX for the required digest is stored here.
1337 EVP_MD_CTX *handshake_dgst;
1339 * Set whenever an expected ChangeCipherSpec message is processed.
1340 * Unset when the peer's Finished message is received.
1341 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1343 int change_cipher_spec;
1347 * we allow one fatal and one warning alert to be outstanding, send close
1348 * alert via the warning alert
1351 unsigned char send_alert[2];
1353 * This flag is set when we should renegotiate ASAP, basically when there
1354 * is no more data in the read or write buffers
1357 int total_renegotiations;
1358 int num_renegotiations;
1359 int in_read_app_data;
1361 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1362 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1363 size_t finish_md_len;
1364 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1365 size_t peer_finish_md_len;
1366 size_t message_size;
1368 /* used to hold the new cipher we are going to use */
1369 const SSL_CIPHER *new_cipher;
1370 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1371 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1373 /* used for certificate requests */
1375 /* Certificate types in certificate request message. */
1378 /* Certificate authorities list peer sent */
1379 STACK_OF(X509_NAME) *peer_ca_names;
1380 size_t key_block_length;
1381 unsigned char *key_block;
1382 const EVP_CIPHER *new_sym_enc;
1383 const EVP_MD *new_hash;
1384 int new_mac_pkey_type;
1385 size_t new_mac_secret_size;
1386 # ifndef OPENSSL_NO_COMP
1387 const SSL_COMP *new_compression;
1389 char *new_compression;
1392 /* Raw values of the cipher list from a client */
1393 unsigned char *ciphers_raw;
1394 size_t ciphers_rawlen;
1395 /* Temporary storage for premaster secret */
1398 # ifndef OPENSSL_NO_PSK
1399 /* Temporary storage for PSK key */
1403 /* Signature algorithm we actually use */
1404 const SIGALG_LOOKUP *sigalg;
1405 /* Pointer to certificate we use */
1408 * signature algorithms peer reports: e.g. supported signature
1409 * algorithms extension for server or as part of a certificate
1410 * request for client.
1412 uint16_t *peer_sigalgs;
1413 /* Size of above array */
1414 size_t peer_sigalgslen;
1415 /* Sigalg peer actualy uses */
1416 const SIGALG_LOOKUP *peer_sigalg;
1418 * Set if corresponding CERT_PKEY can be used with current
1419 * SSL session: e.g. appropriate curve, signature algorithms etc.
1420 * If zero it can't be used at all.
1422 uint32_t valid_flags[SSL_PKEY_NUM];
1424 * For servers the following masks are for the key and auth algorithms
1425 * that are supported by the certs below. For clients they are masks of
1426 * *disabled* algorithms based on the current session.
1431 * The following are used by the client to see if a cipher is allowed or
1432 * not. It contains the minimum and maximum version the client's using
1433 * based on what it knows so far.
1439 /* Connection binding to prevent renegotiation attacks */
1440 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1441 size_t previous_client_finished_len;
1442 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1443 size_t previous_server_finished_len;
1444 int send_connection_binding; /* TODOEKR */
1446 # ifndef OPENSSL_NO_NEXTPROTONEG
1448 * Set if we saw the Next Protocol Negotiation extension from our peer.
1454 * ALPN information (we are in the process of transitioning from NPN to
1459 * In a server these point to the selected ALPN protocol after the
1460 * ClientHello has been processed. In a client these contain the protocol
1461 * that the server selected once the ServerHello has been processed.
1463 unsigned char *alpn_selected;
1464 size_t alpn_selected_len;
1465 /* used by the server to know what options were proposed */
1466 unsigned char *alpn_proposed;
1467 size_t alpn_proposed_len;
1468 /* used by the client to know if it actually sent alpn */
1471 # ifndef OPENSSL_NO_EC
1473 * This is set to true if we believe that this is a version of Safari
1474 * running on OS X 10.6 or newer. We wish to know this because Safari on
1475 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1477 char is_probably_safari;
1478 # endif /* !OPENSSL_NO_EC */
1480 /* For clients: peer temporary key */
1481 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1482 /* The group_id for the DH/ECDH key */
1483 unsigned int group_id;
1489 /* DTLS structures */
1491 # ifndef OPENSSL_NO_SCTP
1492 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1495 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1496 # define DTLS1_MAX_MTU_OVERHEAD 48
1499 * Flag used in message reuse to indicate the buffer contains the record
1500 * header as well as the the handshake message header.
1502 # define DTLS1_SKIP_RECORD_HEADER 2
1504 struct dtls1_retransmit_state {
1505 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1506 EVP_MD_CTX *write_hash; /* used for mac generation */
1507 COMP_CTX *compress; /* compression */
1508 SSL_SESSION *session;
1509 unsigned short epoch;
1512 struct hm_header_st {
1518 unsigned int is_ccs;
1519 struct dtls1_retransmit_state saved_retransmit_state;
1522 struct dtls1_timeout_st {
1523 /* Number of read timeouts so far */
1524 unsigned int read_timeouts;
1525 /* Number of write timeouts so far */
1526 unsigned int write_timeouts;
1527 /* Number of alerts received so far */
1528 unsigned int num_alerts;
1531 typedef struct hm_fragment_st {
1532 struct hm_header_st msg_header;
1533 unsigned char *fragment;
1534 unsigned char *reassembly;
1537 typedef struct pqueue_st pqueue;
1538 typedef struct pitem_st pitem;
1541 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1546 typedef struct pitem_st *piterator;
1548 pitem *pitem_new(unsigned char *prio64be, void *data);
1549 void pitem_free(pitem *item);
1550 pqueue *pqueue_new(void);
1551 void pqueue_free(pqueue *pq);
1552 pitem *pqueue_insert(pqueue *pq, pitem *item);
1553 pitem *pqueue_peek(pqueue *pq);
1554 pitem *pqueue_pop(pqueue *pq);
1555 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1556 pitem *pqueue_iterator(pqueue *pq);
1557 pitem *pqueue_next(piterator *iter);
1558 size_t pqueue_size(pqueue *pq);
1560 typedef struct dtls1_state_st {
1561 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1563 unsigned int cookie_verified;
1564 /* handshake message numbers */
1565 unsigned short handshake_write_seq;
1566 unsigned short next_handshake_write_seq;
1567 unsigned short handshake_read_seq;
1568 /* Buffered handshake messages */
1569 pqueue *buffered_messages;
1570 /* Buffered (sent) handshake records */
1571 pqueue *sent_messages;
1572 size_t link_mtu; /* max on-the-wire DTLS packet size */
1573 size_t mtu; /* max DTLS packet size */
1574 struct hm_header_st w_msg_hdr;
1575 struct hm_header_st r_msg_hdr;
1576 struct dtls1_timeout_st timeout;
1578 * Indicates when the last handshake msg sent will timeout
1580 struct timeval next_timeout;
1581 /* Timeout duration */
1582 unsigned short timeout_duration;
1583 unsigned int retransmitting;
1584 # ifndef OPENSSL_NO_SCTP
1585 int shutdown_received;
1589 # ifndef OPENSSL_NO_EC
1591 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1593 # define EXPLICIT_PRIME_CURVE_TYPE 1
1594 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1595 # define NAMED_CURVE_TYPE 3
1596 # endif /* OPENSSL_NO_EC */
1598 struct cert_pkey_st {
1600 EVP_PKEY *privatekey;
1601 /* Chain for this certificate */
1602 STACK_OF(X509) *chain;
1604 * serverinfo data for this certificate. The data is in TLS Extension
1605 * wire format, specifically it's a series of records like:
1606 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1608 * uint8_t data[length];
1610 unsigned char *serverinfo;
1611 size_t serverinfo_length;
1613 /* Retrieve Suite B flags */
1614 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1615 /* Uses to check strict mode: suite B modes are always strict */
1616 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1617 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1620 ENDPOINT_CLIENT = 0,
1627 unsigned short ext_type;
1629 /* The context which this extension applies to */
1630 unsigned int context;
1632 * Per-connection flags relating to this extension type: not used if
1633 * part of an SSL_CTX structure.
1636 SSL_custom_ext_add_cb_ex add_cb;
1637 SSL_custom_ext_free_cb_ex free_cb;
1639 SSL_custom_ext_parse_cb_ex parse_cb;
1641 } custom_ext_method;
1643 /* ext_flags values */
1646 * Indicates an extension has been received. Used to check for unsolicited or
1647 * duplicate extensions.
1649 # define SSL_EXT_FLAG_RECEIVED 0x1
1651 * Indicates an extension has been sent: used to enable sending of
1652 * corresponding ServerHello extension.
1654 # define SSL_EXT_FLAG_SENT 0x2
1657 custom_ext_method *meths;
1659 } custom_ext_methods;
1661 typedef struct cert_st {
1662 /* Current active set */
1664 * ALWAYS points to an element of the pkeys array
1665 * Probably it would make more sense to store
1666 * an index, not a pointer.
1669 # ifndef OPENSSL_NO_DH
1671 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1674 /* Flags related to certificates */
1675 uint32_t cert_flags;
1676 CERT_PKEY pkeys[SSL_PKEY_NUM];
1677 /* Custom certificate types sent in certificate request message. */
1681 * supported signature algorithms. When set on a client this is sent in
1682 * the client hello as the supported signature algorithms extension. For
1683 * servers it represents the signature algorithms we are willing to use.
1685 uint16_t *conf_sigalgs;
1686 /* Size of above array */
1687 size_t conf_sigalgslen;
1689 * Client authentication signature algorithms, if not set then uses
1690 * conf_sigalgs. On servers these will be the signature algorithms sent
1691 * to the client in a certificate request for TLS 1.2. On a client this
1692 * represents the signature algorithms we are willing to use for client
1695 uint16_t *client_sigalgs;
1696 /* Size of above array */
1697 size_t client_sigalgslen;
1699 * Signature algorithms shared by client and server: cached because these
1700 * are used most often.
1702 const SIGALG_LOOKUP **shared_sigalgs;
1703 size_t shared_sigalgslen;
1705 * Certificate setup callback: if set is called whenever a certificate
1706 * may be required (client or server). the callback can then examine any
1707 * appropriate parameters and setup any certificates required. This
1708 * allows advanced applications to select certificates on the fly: for
1709 * example based on supported signature algorithms or curves.
1711 int (*cert_cb) (SSL *ssl, void *arg);
1714 * Optional X509_STORE for chain building or certificate validation If
1715 * NULL the parent SSL_CTX store is used instead.
1717 X509_STORE *chain_store;
1718 X509_STORE *verify_store;
1719 /* Custom extensions */
1720 custom_ext_methods custext;
1721 /* Security callback */
1722 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1723 void *other, void *ex);
1724 /* Security level */
1727 # ifndef OPENSSL_NO_PSK
1728 /* If not NULL psk identity hint to use for servers */
1729 char *psk_identity_hint;
1731 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
1732 CRYPTO_RWLOCK *lock;
1735 # define FP_ICC (int (*)(const void *,const void *))
1738 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1739 * of a mess of functions, but hell, think of it as an opaque structure :-)
1741 typedef struct ssl3_enc_method {
1742 int (*enc) (SSL *, SSL3_RECORD *, size_t, int);
1743 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
1744 int (*setup_key_block) (SSL *);
1745 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1747 int (*change_cipher_state) (SSL *, int);
1748 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *);
1749 const char *client_finished_label;
1750 size_t client_finished_label_len;
1751 const char *server_finished_label;
1752 size_t server_finished_label_len;
1753 int (*alert_value) (int);
1754 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1755 const char *, size_t,
1756 const unsigned char *, size_t,
1758 /* Various flags indicating protocol version requirements */
1760 /* Set the handshake header */
1761 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type);
1762 /* Close construction of the handshake message */
1763 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype);
1764 /* Write out handshake message */
1765 int (*do_write) (SSL *s);
1768 # define ssl_set_handshake_header(s, pkt, htype) \
1769 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
1770 # define ssl_close_construct_packet(s, pkt, htype) \
1771 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
1772 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1774 /* Values for enc_flags */
1776 /* Uses explicit IV for CBC mode */
1777 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1778 /* Uses signature algorithms extension */
1779 # define SSL_ENC_FLAG_SIGALGS 0x2
1780 /* Uses SHA256 default PRF */
1781 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1783 # define SSL_ENC_FLAG_DTLS 0x8
1785 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1786 * apply to others in future.
1788 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1790 # ifndef OPENSSL_NO_COMP
1791 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1792 typedef struct ssl3_comp_st {
1793 int comp_id; /* The identifier byte for this compression
1795 char *name; /* Text name used for the compression type */
1796 COMP_METHOD *method; /* The method :-) */
1800 typedef enum downgrade_en {
1807 * Extension index values NOTE: Any updates to these defines should be mirrored
1808 * with equivalent updates to ext_defs in extensions.c
1810 typedef enum tlsext_index_en {
1811 TLSEXT_IDX_renegotiate,
1812 TLSEXT_IDX_server_name,
1814 TLSEXT_IDX_ec_point_formats,
1815 TLSEXT_IDX_supported_groups,
1816 TLSEXT_IDX_session_ticket,
1817 TLSEXT_IDX_signature_algorithms,
1818 TLSEXT_IDX_status_request,
1819 TLSEXT_IDX_next_proto_neg,
1820 TLSEXT_IDX_application_layer_protocol_negotiation,
1821 TLSEXT_IDX_use_srtp,
1822 TLSEXT_IDX_encrypt_then_mac,
1823 TLSEXT_IDX_signed_certificate_timestamp,
1824 TLSEXT_IDX_extended_master_secret,
1825 TLSEXT_IDX_supported_versions,
1826 TLSEXT_IDX_psk_kex_modes,
1827 TLSEXT_IDX_key_share,
1829 TLSEXT_IDX_cryptopro_bug,
1830 TLSEXT_IDX_early_data,
1831 TLSEXT_IDX_certificate_authorities,
1837 * Dummy status type for the status_type extension. Indicates no status type
1840 #define TLSEXT_STATUSTYPE_nothing -1
1842 /* Sigalgs values */
1843 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
1844 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
1845 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
1846 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
1847 #define TLSEXT_SIGALG_rsa_pss_sha256 0x0804
1848 #define TLSEXT_SIGALG_rsa_pss_sha384 0x0805
1849 #define TLSEXT_SIGALG_rsa_pss_sha512 0x0806
1850 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
1851 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
1852 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
1853 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
1854 #define TLSEXT_SIGALG_dsa_sha256 0x0402
1855 #define TLSEXT_SIGALG_dsa_sha384 0x0502
1856 #define TLSEXT_SIGALG_dsa_sha512 0x0602
1857 #define TLSEXT_SIGALG_dsa_sha1 0x0202
1858 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
1859 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
1860 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
1862 /* Known PSK key exchange modes */
1863 #define TLSEXT_KEX_MODE_KE 0x00
1864 #define TLSEXT_KEX_MODE_KE_DHE 0x01
1867 * Internal representations of key exchange modes
1869 #define TLSEXT_KEX_MODE_FLAG_NONE 0
1870 #define TLSEXT_KEX_MODE_FLAG_KE 1
1871 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
1873 /* An invalid index into the TLSv1.3 PSK identities */
1874 #define TLSEXT_PSK_BAD_IDENTITY -1
1876 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \
1877 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
1879 /* A dummy signature value not valid for TLSv1.2 signature algs */
1880 #define TLSEXT_signature_rsa_pss 0x0101
1882 /* TLSv1.3 downgrade protection sentinel values */
1883 extern const unsigned char tls11downgrade[8];
1884 extern const unsigned char tls12downgrade[8];
1886 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
1888 __owur const SSL_METHOD *ssl_bad_method(int ver);
1889 __owur const SSL_METHOD *sslv3_method(void);
1890 __owur const SSL_METHOD *sslv3_server_method(void);
1891 __owur const SSL_METHOD *sslv3_client_method(void);
1892 __owur const SSL_METHOD *tlsv1_method(void);
1893 __owur const SSL_METHOD *tlsv1_server_method(void);
1894 __owur const SSL_METHOD *tlsv1_client_method(void);
1895 __owur const SSL_METHOD *tlsv1_1_method(void);
1896 __owur const SSL_METHOD *tlsv1_1_server_method(void);
1897 __owur const SSL_METHOD *tlsv1_1_client_method(void);
1898 __owur const SSL_METHOD *tlsv1_2_method(void);
1899 __owur const SSL_METHOD *tlsv1_2_server_method(void);
1900 __owur const SSL_METHOD *tlsv1_2_client_method(void);
1901 __owur const SSL_METHOD *tlsv1_3_method(void);
1902 __owur const SSL_METHOD *tlsv1_3_server_method(void);
1903 __owur const SSL_METHOD *tlsv1_3_client_method(void);
1904 __owur const SSL_METHOD *dtlsv1_method(void);
1905 __owur const SSL_METHOD *dtlsv1_server_method(void);
1906 __owur const SSL_METHOD *dtlsv1_client_method(void);
1907 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
1908 __owur const SSL_METHOD *dtlsv1_2_method(void);
1909 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
1910 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
1912 extern const SSL3_ENC_METHOD TLSv1_enc_data;
1913 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
1914 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
1915 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
1916 extern const SSL3_ENC_METHOD SSLv3_enc_data;
1917 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
1918 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
1921 * Flags for SSL methods
1923 # define SSL_METHOD_NO_FIPS (1U<<0)
1924 # define SSL_METHOD_NO_SUITEB (1U<<1)
1926 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
1927 s_connect, enc_data) \
1928 const SSL_METHOD *func_name(void) \
1930 static const SSL_METHOD func_name##_data= { \
1944 ssl3_renegotiate_check, \
1947 ssl3_dispatch_alert, \
1950 ssl3_get_cipher_by_char, \
1951 ssl3_put_cipher_by_char, \
1955 tls1_default_timeout, \
1957 ssl_undefined_void_function, \
1958 ssl3_callback_ctrl, \
1959 ssl3_ctx_callback_ctrl, \
1961 return &func_name##_data; \
1964 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
1965 const SSL_METHOD *func_name(void) \
1967 static const SSL_METHOD func_name##_data= { \
1969 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
1981 ssl3_renegotiate_check, \
1984 ssl3_dispatch_alert, \
1987 ssl3_get_cipher_by_char, \
1988 ssl3_put_cipher_by_char, \
1992 ssl3_default_timeout, \
1994 ssl_undefined_void_function, \
1995 ssl3_callback_ctrl, \
1996 ssl3_ctx_callback_ctrl, \
1998 return &func_name##_data; \
2001 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2002 s_connect, enc_data) \
2003 const SSL_METHOD *func_name(void) \
2005 static const SSL_METHOD func_name##_data= { \
2019 ssl3_renegotiate_check, \
2021 dtls1_write_app_data_bytes, \
2022 dtls1_dispatch_alert, \
2025 ssl3_get_cipher_by_char, \
2026 ssl3_put_cipher_by_char, \
2030 dtls1_default_timeout, \
2032 ssl_undefined_void_function, \
2033 ssl3_callback_ctrl, \
2034 ssl3_ctx_callback_ctrl, \
2036 return &func_name##_data; \
2039 struct openssl_ssl_test_functions {
2040 int (*p_ssl_init_wbio_buffer) (SSL *s);
2041 int (*p_ssl3_setup_buffers) (SSL *s);
2044 const char *ssl_protocol_to_string(int version);
2046 /* Returns true if certificate and private key for 'idx' are present */
2047 static ossl_inline int ssl_has_cert(const SSL *s, int idx)
2049 if (idx < 0 || idx >= SSL_PKEY_NUM)
2051 return s->cert->pkeys[idx].x509 != NULL
2052 && s->cert->pkeys[idx].privatekey != NULL;
2055 # ifndef OPENSSL_UNIT_TEST
2057 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2058 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2059 void ssl_clear_cipher_ctx(SSL *s);
2060 int ssl_clear_bad_session(SSL *s);
2061 __owur CERT *ssl_cert_new(void);
2062 __owur CERT *ssl_cert_dup(CERT *cert);
2063 void ssl_cert_clear_certs(CERT *c);
2064 void ssl_cert_free(CERT *c);
2065 __owur int ssl_get_new_session(SSL *s, int session);
2066 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello, int *al);
2067 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
2068 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2069 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2070 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2071 const SSL_CIPHER *const *bp);
2072 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
2073 STACK_OF(SSL_CIPHER) **pref,
2074 STACK_OF(SSL_CIPHER)
2076 const char *rule_str,
2078 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites,
2079 int sslv2format, int *al);
2080 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
2081 STACK_OF(SSL_CIPHER) **skp,
2082 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2084 void ssl_update_cache(SSL *s, int mode);
2085 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
2086 const EVP_MD **md, int *mac_pkey_type,
2087 size_t *mac_secret_size, SSL_COMP **comp,
2089 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2090 size_t *int_overhead, size_t *blocksize,
2091 size_t *ext_overhead);
2092 __owur int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
2093 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl,
2094 const unsigned char *ptr,
2096 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2097 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2098 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2099 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2100 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2101 __owur int ssl_cert_set_current(CERT *c, long arg);
2102 __owur X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
2103 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2105 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
2106 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
2107 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2110 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
2111 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2114 int ssl_undefined_function(SSL *s);
2115 __owur int ssl_undefined_void_function(void);
2116 __owur int ssl_undefined_const_function(const SSL *s);
2117 __owur int ssl_get_server_cert_serverinfo(SSL *s,
2118 const unsigned char **serverinfo,
2119 size_t *serverinfo_length);
2120 __owur int ssl_cert_type(const X509 *x, const EVP_PKEY *pkey);
2121 void ssl_set_masks(SSL *s);
2122 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
2123 __owur int ssl_verify_alarm_type(long type);
2124 void ssl_sort_cipher_list(void);
2125 void ssl_load_ciphers(void);
2126 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field,
2127 size_t len, DOWNGRADE dgrd);
2128 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
2130 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm);
2131 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2133 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2135 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2136 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2137 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2139 int ssl3_init_finished_mac(SSL *s);
2140 __owur int ssl3_setup_key_block(SSL *s);
2141 __owur int ssl3_change_cipher_state(SSL *s, int which);
2142 void ssl3_cleanup_key_block(SSL *s);
2143 __owur int ssl3_do_write(SSL *s, int type);
2144 int ssl3_send_alert(SSL *s, int level, int desc);
2145 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
2146 unsigned char *p, size_t len,
2147 size_t *secret_size);
2148 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt);
2149 __owur int ssl3_num_ciphers(void);
2150 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2151 int ssl3_renegotiate(SSL *ssl);
2152 int ssl3_renegotiate_check(SSL *ssl, int initok);
2153 __owur int ssl3_dispatch_alert(SSL *s);
2154 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen,
2156 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len);
2157 void ssl3_free_digest_list(SSL *s);
2158 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt,
2159 CERT_PKEY *cpk, int *al);
2160 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
2161 STACK_OF(SSL_CIPHER) *clnt,
2162 STACK_OF(SSL_CIPHER) *srvr);
2163 __owur int ssl3_digest_cached_records(SSL *s, int keep);
2164 __owur int ssl3_new(SSL *s);
2165 void ssl3_free(SSL *s);
2166 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2167 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2168 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2169 __owur int ssl3_shutdown(SSL *s);
2170 void ssl3_clear(SSL *s);
2171 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2172 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2173 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2174 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2176 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
2177 __owur long ssl3_default_timeout(void);
2179 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2180 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2181 __owur int tls_setup_handshake(SSL *s);
2182 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2183 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2184 __owur int ssl3_handshake_write(SSL *s);
2186 __owur int ssl_allow_compression(SSL *s);
2188 __owur int ssl_version_supported(const SSL *s, int version);
2190 __owur int ssl_set_client_hello_version(SSL *s);
2191 __owur int ssl_check_version_downgrade(SSL *s);
2192 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2193 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello,
2195 __owur int ssl_choose_client_version(SSL *s, int version, int checkdgrd,
2197 int ssl_get_client_min_max_version(const SSL *s, int *min_version,
2200 __owur long tls1_default_timeout(void);
2201 __owur int dtls1_do_write(SSL *s, int type);
2202 void dtls1_set_message_header(SSL *s,
2205 size_t frag_off, size_t frag_len);
2207 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2210 __owur int dtls1_read_failed(SSL *s, int code);
2211 __owur int dtls1_buffer_message(SSL *s, int ccs);
2212 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
2213 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2214 int dtls1_retransmit_buffered_messages(SSL *s);
2215 void dtls1_clear_received_buffer(SSL *s);
2216 void dtls1_clear_sent_buffer(SSL *s);
2217 void dtls1_get_message_header(unsigned char *data,
2218 struct hm_header_st *msg_hdr);
2219 __owur long dtls1_default_timeout(void);
2220 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
2221 __owur int dtls1_check_timeout_num(SSL *s);
2222 __owur int dtls1_handle_timeout(SSL *s);
2223 void dtls1_start_timer(SSL *s);
2224 void dtls1_stop_timer(SSL *s);
2225 __owur int dtls1_is_timer_expired(SSL *s);
2226 void dtls1_double_timeout(SSL *s);
2227 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2229 __owur int dtls1_send_newsession_ticket(SSL *s);
2230 __owur size_t dtls1_min_mtu(SSL *s);
2231 void dtls1_hm_fragment_free(hm_fragment *frag);
2232 __owur int dtls1_query_mtu(SSL *s);
2234 __owur int tls1_new(SSL *s);
2235 void tls1_free(SSL *s);
2236 void tls1_clear(SSL *s);
2237 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2238 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2240 __owur int dtls1_new(SSL *s);
2241 void dtls1_free(SSL *s);
2242 void dtls1_clear(SSL *s);
2243 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2244 __owur int dtls1_shutdown(SSL *s);
2246 __owur int dtls1_dispatch_alert(SSL *s);
2248 __owur int ssl_init_wbio_buffer(SSL *s);
2249 void ssl_free_wbio_buffer(SSL *s);
2251 __owur int tls1_change_cipher_state(SSL *s, int which);
2252 __owur int tls1_setup_key_block(SSL *s);
2253 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
2255 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
2256 unsigned char *p, size_t len,
2257 size_t *secret_size);
2258 __owur int tls13_setup_key_block(SSL *s);
2259 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen,
2261 __owur int tls13_change_cipher_state(SSL *s, int which);
2262 __owur int tls13_update_key(SSL *s, int send);
2263 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md,
2264 const unsigned char *secret,
2265 const unsigned char *label, size_t labellen,
2266 const unsigned char *hash,
2267 unsigned char *out, size_t outlen);
2268 __owur int tls13_derive_key(SSL *s, const EVP_MD *md,
2269 const unsigned char *secret, unsigned char *key,
2271 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md,
2272 const unsigned char *secret, unsigned char *iv,
2274 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md,
2275 const unsigned char *secret,
2276 unsigned char *fin, size_t finlen);
2277 int tls13_generate_secret(SSL *s, const EVP_MD *md,
2278 const unsigned char *prevsecret,
2279 const unsigned char *insecret,
2281 unsigned char *outsecret);
2282 __owur int tls13_generate_handshake_secret(SSL *s,
2283 const unsigned char *insecret,
2284 size_t insecretlen);
2285 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out,
2286 unsigned char *prev, size_t prevlen,
2287 size_t *secret_size);
2288 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2289 const char *label, size_t llen,
2290 const unsigned char *p, size_t plen,
2292 __owur int tls1_alert_code(int code);
2293 __owur int tls13_alert_code(int code);
2294 __owur int ssl3_alert_code(int code);
2296 # ifndef OPENSSL_NO_EC
2297 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2300 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2302 # ifndef OPENSSL_NO_EC
2303 /* Flags values from tls1_ec_curve_id2nid() */
2304 /* Mask for curve type */
2305 # define TLS_CURVE_TYPE 0x3
2306 # define TLS_CURVE_PRIME 0x0
2307 # define TLS_CURVE_CHAR2 0x1
2308 # define TLS_CURVE_CUSTOM 0x2
2310 #define bytestogroup(bytes) ((unsigned int)(bytes[0] << 8 | bytes[1]))
2312 __owur int tls1_ec_curve_id2nid(int curve_id, unsigned int *pflags);
2313 __owur int tls1_ec_nid2curve_id(int nid);
2314 __owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
2315 __owur int tls1_shared_group(SSL *s, int nmatch);
2316 __owur int tls1_set_groups(unsigned char **pext, size_t *pextlen,
2317 int *curves, size_t ncurves);
2318 __owur int tls1_set_groups_list(unsigned char **pext, size_t *pextlen,
2320 void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
2321 size_t *num_formats);
2322 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2323 __owur EVP_PKEY *ssl_generate_pkey_curve(int id);
2324 # endif /* OPENSSL_NO_EC */
2326 __owur int tls1_shared_list(SSL *s,
2327 const unsigned char *l1, size_t l1len,
2328 const unsigned char *l2, size_t l2len, int nmatch);
2329 __owur int tls_curve_allowed(SSL *s, const unsigned char *curve, int op);
2330 __owur int tls1_get_curvelist(SSL *s, int sess, const unsigned char **pcurves,
2331 size_t *num_curves);
2333 void ssl_set_default_md(SSL *s);
2334 __owur int tls1_set_server_sigalgs(SSL *s);
2336 /* Return codes for tls_get_ticket_from_client() and tls_decrypt_ticket() */
2337 typedef enum ticket_en {
2338 /* fatal error, malloc failure */
2339 TICKET_FATAL_ERR_MALLOC,
2340 /* fatal error, either from parsing or decrypting the ticket */
2341 TICKET_FATAL_ERR_OTHER,
2342 /* No ticket present */
2344 /* Empty ticket present */
2346 /* the ticket couldn't be decrypted */
2348 /* a ticket was successfully decrypted */
2350 /* same as above but the ticket needs to be reneewed */
2351 TICKET_SUCCESS_RENEW
2354 __owur TICKET_RETURN tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
2356 __owur TICKET_RETURN tls_decrypt_ticket(SSL *s, const unsigned char *etick,
2358 const unsigned char *sess_id,
2359 size_t sesslen, SSL_SESSION **psess);
2361 __owur int tls_use_ticket(SSL *s);
2363 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2365 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2366 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2368 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2370 void tls1_set_cert_validity(SSL *s);
2372 # ifndef OPENSSL_NO_CT
2373 __owur int ssl_validate_ct(SSL *s);
2376 # ifndef OPENSSL_NO_DH
2377 __owur DH *ssl_get_auto_dh(SSL *s);
2380 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2381 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex,
2384 int tls_choose_sigalg(SSL *s, int *al);
2386 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2387 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2388 __owur long ssl_get_algorithm2(SSL *s);
2389 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
2390 const uint16_t *psig, size_t psiglen);
2391 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt);
2392 __owur int tls1_process_sigalgs(SSL *s);
2393 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey);
2394 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs);
2395 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey);
2396 void ssl_set_client_disabled(SSL *s);
2397 __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op);
2399 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
2401 __owur const EVP_MD *ssl_md(int idx);
2402 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2403 __owur const EVP_MD *ssl_prf_md(SSL *s);
2406 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2407 * with |ssl|, if logging is enabled. It returns one on success and zero on
2408 * failure. The entry is identified by the first 8 bytes of
2409 * |encrypted_premaster|.
2411 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl,
2412 const uint8_t *encrypted_premaster,
2413 size_t encrypted_premaster_len,
2414 const uint8_t *premaster,
2415 size_t premaster_len);
2418 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2419 * logging is available. It returns one on success and zero on failure. It tags
2420 * the entry with |label|.
2422 __owur int ssl_log_secret(SSL *ssl, const char *label,
2423 const uint8_t *secret, size_t secret_len);
2425 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2426 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2427 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2428 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2429 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2430 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2433 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2434 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2435 unsigned char *md_out,
2436 size_t *md_out_size,
2437 const unsigned char header[13],
2438 const unsigned char *data,
2439 size_t data_plus_mac_size,
2440 size_t data_plus_mac_plus_padding_size,
2441 const unsigned char *mac_secret,
2442 size_t mac_secret_length, char is_sslv3);
2444 __owur int srp_generate_server_master_secret(SSL *s);
2445 __owur int srp_generate_client_master_secret(SSL *s);
2446 __owur int srp_verify_server_param(SSL *s, int *al);
2448 /* statem/extensions_cust.c */
2450 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2451 ENDPOINT role, unsigned int ext_type,
2454 void custom_ext_init(custom_ext_methods *meths);
2456 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type,
2457 const unsigned char *ext_data, size_t ext_size,
2458 X509 *x, size_t chainidx, int *al);
2459 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x,
2460 size_t chainidx, int maxversion, int *al);
2462 __owur int custom_exts_copy(custom_ext_methods *dst,
2463 const custom_ext_methods *src);
2464 void custom_exts_free(custom_ext_methods *exts);
2466 void ssl_comp_free_compression_methods_int(void);
2468 # else /* OPENSSL_UNIT_TEST */
2470 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2471 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers