2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
12 #ifndef OSSL_SSL_LOCAL_H
13 # define OSSL_SSL_LOCAL_H
15 # include "internal/e_os.h" /* struct timeval for DTLS */
19 # include "internal/common.h" /* for HAS_PREFIX */
21 # include <openssl/buffer.h>
22 # include <openssl/bio.h>
23 # include <openssl/comp.h>
24 # include <openssl/dsa.h>
25 # include <openssl/err.h>
26 # include <openssl/ssl.h>
27 # include <openssl/async.h>
28 # include <openssl/symhacks.h>
29 # include <openssl/ct.h>
30 # include "record/record.h"
31 # include "internal/recordmethod.h"
32 # include "statem/statem.h"
33 # include "internal/packet.h"
34 # include "internal/dane.h"
35 # include "internal/refcount.h"
36 # include "internal/tsan_assist.h"
37 # include "internal/bio.h"
38 # include "internal/ktls.h"
39 # include "internal/time.h"
41 # ifdef OPENSSL_BUILD_SHLIBSSL
42 # undef OPENSSL_EXTERN
43 # define OPENSSL_EXTERN OPENSSL_EXPORT
46 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
47 l|=(((unsigned long)(*((c)++)))<< 8), \
48 l|=(((unsigned long)(*((c)++)))<<16), \
49 l|=(((unsigned long)(*((c)++)))<<24))
51 /* NOTE - c is not incremented as per c2l */
52 # define c2ln(c,l1,l2,n) { \
56 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
57 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
58 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
59 case 5: l2|=((unsigned long)(*(--(c)))); \
60 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
61 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
62 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
63 case 1: l1|=((unsigned long)(*(--(c)))); \
67 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
68 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
69 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
70 *((c)++)=(unsigned char)(((l)>>24)&0xff))
72 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
73 l|=((unsigned long)(*((c)++)))<<16, \
74 l|=((unsigned long)(*((c)++)))<< 8, \
75 l|=((unsigned long)(*((c)++))))
77 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
78 l|=((uint64_t)(*((c)++)))<<48, \
79 l|=((uint64_t)(*((c)++)))<<40, \
80 l|=((uint64_t)(*((c)++)))<<32, \
81 l|=((uint64_t)(*((c)++)))<<24, \
82 l|=((uint64_t)(*((c)++)))<<16, \
83 l|=((uint64_t)(*((c)++)))<< 8, \
84 l|=((uint64_t)(*((c)++))))
87 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
88 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
89 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
90 *((c)++)=(unsigned char)(((l) )&0xff))
92 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
93 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
94 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
95 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
96 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
97 *((c)++)=(unsigned char)(((l) )&0xff))
99 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
102 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
103 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
104 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
105 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
106 *((c)++)=(unsigned char)(((l) )&0xff))
108 /* NOTE - c is not incremented as per l2c */
109 # define l2cn(l1,l2,c,n) { \
112 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
113 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
114 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
115 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
116 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
117 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
118 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
119 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
123 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
124 (((unsigned int)((c)[1])) )),(c)+=2)
125 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
126 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
128 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
129 (((unsigned long)((c)[1]))<< 8)| \
130 (((unsigned long)((c)[2])) )),(c)+=3)
132 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
133 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
134 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
136 # define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION
137 # define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION
140 * DTLS version numbers are strange because they're inverted. Except for
141 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
143 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
144 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
145 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
146 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
147 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
149 # define SSL_AD_NO_ALERT -1
152 * Define the Bitmasks for SSL_CIPHER.algorithms.
153 * This bits are used packed as dense as possible. If new methods/ciphers
154 * etc will be added, the bits a likely to change, so this information
155 * is for internal library use only, even though SSL_CIPHER.algorithms
156 * can be publicly accessed.
157 * Use the according functions for cipher management instead.
159 * The bit mask handling in the selection and sorting scheme in
160 * ssl_create_cipher_list() has only limited capabilities, reflecting
161 * that the different entities within are mutually exclusive:
162 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
165 /* Bits for algorithm_mkey (key exchange algorithm) */
166 /* RSA key exchange */
167 # define SSL_kRSA 0x00000001U
168 /* tmp DH key no DH cert */
169 # define SSL_kDHE 0x00000002U
171 # define SSL_kEDH SSL_kDHE
173 # define SSL_kECDHE 0x00000004U
175 # define SSL_kEECDH SSL_kECDHE
177 # define SSL_kPSK 0x00000008U
178 /* GOST key exchange */
179 # define SSL_kGOST 0x00000010U
181 # define SSL_kSRP 0x00000020U
183 # define SSL_kRSAPSK 0x00000040U
184 # define SSL_kECDHEPSK 0x00000080U
185 # define SSL_kDHEPSK 0x00000100U
186 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */
187 # define SSL_kGOST18 0x00000200U
191 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
193 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
194 # define SSL_kANY 0x00000000U
196 /* Bits for algorithm_auth (server authentication) */
198 # define SSL_aRSA 0x00000001U
200 # define SSL_aDSS 0x00000002U
201 /* no auth (i.e. use ADH or AECDH) */
202 # define SSL_aNULL 0x00000004U
204 # define SSL_aECDSA 0x00000008U
206 # define SSL_aPSK 0x00000010U
207 /* GOST R 34.10-2001 signature auth */
208 # define SSL_aGOST01 0x00000020U
210 # define SSL_aSRP 0x00000040U
211 /* GOST R 34.10-2012 signature auth */
212 # define SSL_aGOST12 0x00000080U
213 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
214 # define SSL_aANY 0x00000000U
215 /* All bits requiring a certificate */
217 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
219 /* Bits for algorithm_enc (symmetric encryption) */
220 # define SSL_DES 0x00000001U
221 # define SSL_3DES 0x00000002U
222 # define SSL_RC4 0x00000004U
223 # define SSL_RC2 0x00000008U
224 # define SSL_IDEA 0x00000010U
225 # define SSL_eNULL 0x00000020U
226 # define SSL_AES128 0x00000040U
227 # define SSL_AES256 0x00000080U
228 # define SSL_CAMELLIA128 0x00000100U
229 # define SSL_CAMELLIA256 0x00000200U
230 # define SSL_eGOST2814789CNT 0x00000400U
231 # define SSL_SEED 0x00000800U
232 # define SSL_AES128GCM 0x00001000U
233 # define SSL_AES256GCM 0x00002000U
234 # define SSL_AES128CCM 0x00004000U
235 # define SSL_AES256CCM 0x00008000U
236 # define SSL_AES128CCM8 0x00010000U
237 # define SSL_AES256CCM8 0x00020000U
238 # define SSL_eGOST2814789CNT12 0x00040000U
239 # define SSL_CHACHA20POLY1305 0x00080000U
240 # define SSL_ARIA128GCM 0x00100000U
241 # define SSL_ARIA256GCM 0x00200000U
242 # define SSL_MAGMA 0x00400000U
243 # define SSL_KUZNYECHIK 0x00800000U
245 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
246 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
247 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
248 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
249 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
250 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
251 # define SSL_ARIA (SSL_ARIAGCM)
252 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \
253 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \
254 | SSL_CAMELLIA256 | SSL_SEED)
256 /* Bits for algorithm_mac (symmetric authentication) */
258 # define SSL_MD5 0x00000001U
259 # define SSL_SHA1 0x00000002U
260 # define SSL_GOST94 0x00000004U
261 # define SSL_GOST89MAC 0x00000008U
262 # define SSL_SHA256 0x00000010U
263 # define SSL_SHA384 0x00000020U
264 /* Not a real MAC, just an indication it is part of cipher */
265 # define SSL_AEAD 0x00000040U
266 # define SSL_GOST12_256 0x00000080U
267 # define SSL_GOST89MAC12 0x00000100U
268 # define SSL_GOST12_512 0x00000200U
269 # define SSL_MAGMAOMAC 0x00000400U
270 # define SSL_KUZNYECHIKOMAC 0x00000800U
273 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
274 * sure to update this constant too
277 # define SSL_MD_MD5_IDX 0
278 # define SSL_MD_SHA1_IDX 1
279 # define SSL_MD_GOST94_IDX 2
280 # define SSL_MD_GOST89MAC_IDX 3
281 # define SSL_MD_SHA256_IDX 4
282 # define SSL_MD_SHA384_IDX 5
283 # define SSL_MD_GOST12_256_IDX 6
284 # define SSL_MD_GOST89MAC12_IDX 7
285 # define SSL_MD_GOST12_512_IDX 8
286 # define SSL_MD_MD5_SHA1_IDX 9
287 # define SSL_MD_SHA224_IDX 10
288 # define SSL_MD_SHA512_IDX 11
289 # define SSL_MD_MAGMAOMAC_IDX 12
290 # define SSL_MD_KUZNYECHIKOMAC_IDX 13
291 # define SSL_MAX_DIGEST 14
293 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
295 /* Bits for algorithm2 (handshake digests and other extra flags) */
297 /* Bits 0-7 are handshake MAC */
298 # define SSL_HANDSHAKE_MAC_MASK 0xFF
299 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
300 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
301 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
302 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
303 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
304 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
305 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
307 /* Bits 8-15 bits are PRF */
308 # define TLS1_PRF_DGST_SHIFT 8
309 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
310 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
311 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
312 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
313 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
314 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
315 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
318 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
319 * goes into algorithm2)
321 # define TLS1_STREAM_MAC 0x10000
323 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites
324 * (currently this also goes into algorithm2)
326 # define TLS1_TLSTREE 0x20000
328 # define SSL_STRONG_MASK 0x0000001FU
329 # define SSL_DEFAULT_MASK 0X00000020U
331 # define SSL_STRONG_NONE 0x00000001U
332 # define SSL_LOW 0x00000002U
333 # define SSL_MEDIUM 0x00000004U
334 # define SSL_HIGH 0x00000008U
335 # define SSL_FIPS 0x00000010U
336 # define SSL_NOT_DEFAULT 0x00000020U
338 /* we have used 0000003f - 26 bits left to go */
340 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
341 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
343 /* Check if an SSL structure is using DTLS */
344 # define SSL_CONNECTION_IS_DTLS(s) \
345 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
347 /* Check if we are using TLSv1.3 */
348 # define SSL_CONNECTION_IS_TLS13(s) (!SSL_CONNECTION_IS_DTLS(s) \
349 && SSL_CONNECTION_GET_SSL(s)->method->version >= TLS1_3_VERSION \
350 && SSL_CONNECTION_GET_SSL(s)->method->version != TLS_ANY_VERSION)
352 # define SSL_CONNECTION_TREAT_AS_TLS13(s) \
353 (SSL_CONNECTION_IS_TLS13(s) \
354 || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
355 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
356 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
357 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
358 || (s)->hello_retry_request == SSL_HRR_PENDING)
360 # define SSL_IS_FIRST_HANDSHAKE(s) ((s)->s3.tmp.finish_md_len == 0 \
361 || (s)->s3.tmp.peer_finish_md_len == 0)
363 /* See if we need explicit IV */
364 # define SSL_USE_EXPLICIT_IV(s) \
365 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
367 * See if we use signature algorithms extension and signature algorithm
370 # define SSL_USE_SIGALGS(s) \
371 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
373 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
374 * apply to others in future.
376 # define SSL_USE_TLS1_2_CIPHERS(s) \
377 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
379 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
380 * flags because it may not be set to correct version yet.
382 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
383 ((!SSL_CONNECTION_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
384 (SSL_CONNECTION_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
386 * Determine if a client should send signature algorithms extension:
387 * as with TLS1.2 cipher we can't rely on method flags.
389 # define SSL_CLIENT_USE_SIGALGS(s) \
390 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
392 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
393 (((value) >= TLSEXT_max_fragment_length_512) && \
394 ((value) <= TLSEXT_max_fragment_length_4096))
395 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
396 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
397 # define GET_MAX_FRAGMENT_LENGTH(session) \
398 (512U << (session->ext.max_fragment_len_mode - 1))
400 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
401 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
403 /* alert_dispatch values */
405 /* No alert pending */
406 # define SSL_ALERT_DISPATCH_NONE 0
408 # define SSL_ALERT_DISPATCH_PENDING 1
409 /* Pending alert write needs to be retried */
410 # define SSL_ALERT_DISPATCH_RETRY 2
412 /* Mostly for SSLv3 */
413 # define SSL_PKEY_RSA 0
414 # define SSL_PKEY_RSA_PSS_SIGN 1
415 # define SSL_PKEY_DSA_SIGN 2
416 # define SSL_PKEY_ECC 3
417 # define SSL_PKEY_GOST01 4
418 # define SSL_PKEY_GOST12_256 5
419 # define SSL_PKEY_GOST12_512 6
420 # define SSL_PKEY_ED25519 7
421 # define SSL_PKEY_ED448 8
422 # define SSL_PKEY_NUM 9
424 # define SSL_ENC_DES_IDX 0
425 # define SSL_ENC_3DES_IDX 1
426 # define SSL_ENC_RC4_IDX 2
427 # define SSL_ENC_RC2_IDX 3
428 # define SSL_ENC_IDEA_IDX 4
429 # define SSL_ENC_NULL_IDX 5
430 # define SSL_ENC_AES128_IDX 6
431 # define SSL_ENC_AES256_IDX 7
432 # define SSL_ENC_CAMELLIA128_IDX 8
433 # define SSL_ENC_CAMELLIA256_IDX 9
434 # define SSL_ENC_GOST89_IDX 10
435 # define SSL_ENC_SEED_IDX 11
436 # define SSL_ENC_AES128GCM_IDX 12
437 # define SSL_ENC_AES256GCM_IDX 13
438 # define SSL_ENC_AES128CCM_IDX 14
439 # define SSL_ENC_AES256CCM_IDX 15
440 # define SSL_ENC_AES128CCM8_IDX 16
441 # define SSL_ENC_AES256CCM8_IDX 17
442 # define SSL_ENC_GOST8912_IDX 18
443 # define SSL_ENC_CHACHA_IDX 19
444 # define SSL_ENC_ARIA128GCM_IDX 20
445 # define SSL_ENC_ARIA256GCM_IDX 21
446 # define SSL_ENC_MAGMA_IDX 22
447 # define SSL_ENC_KUZNYECHIK_IDX 23
448 # define SSL_ENC_NUM_IDX 24
451 * SSL_kRSA <- RSA_ENC
452 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
453 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
454 * SSL_aRSA <- RSA_ENC | RSA_SIGN
455 * SSL_aDSS <- DSA_SIGN
459 #define CERT_INVALID 0
460 #define CERT_PUBLIC_KEY 1
461 #define CERT_PRIVATE_KEY 2
464 /* Post-Handshake Authentication state */
467 SSL_PHA_EXT_SENT, /* client-side only: extension sent */
468 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
469 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
470 SSL_PHA_REQUESTED /* request received by client, or sent by server */
473 /* CipherSuite length. SSLv3 and all TLS versions. */
474 # define TLS_CIPHER_LEN 2
475 /* used to hold info on the particular ciphers used */
476 struct ssl_cipher_st {
478 const char *name; /* text name */
479 const char *stdname; /* RFC name */
480 uint32_t id; /* id, 4 bytes, first is version */
482 * changed in 1.0.0: these four used to be portions of a single value
485 uint32_t algorithm_mkey; /* key exchange algorithm */
486 uint32_t algorithm_auth; /* server authentication */
487 uint32_t algorithm_enc; /* symmetric encryption */
488 uint32_t algorithm_mac; /* symmetric authentication */
489 int min_tls; /* minimum SSL/TLS protocol version */
490 int max_tls; /* maximum SSL/TLS protocol version */
491 int min_dtls; /* minimum DTLS protocol version */
492 int max_dtls; /* maximum DTLS protocol version */
493 uint32_t algo_strength; /* strength and export flags */
494 uint32_t algorithm2; /* Extra flags */
495 int32_t strength_bits; /* Number of bits really used */
496 uint32_t alg_bits; /* Number of bits for algorithm */
499 /* Used to hold SSL/TLS functions */
500 struct ssl_method_st {
504 SSL *(*ssl_new) (SSL_CTX *ctx);
505 void (*ssl_free) (SSL *s);
506 int (*ssl_reset) (SSL *s);
507 int (*ssl_init) (SSL *s);
508 int (*ssl_clear) (SSL *s);
509 void (*ssl_deinit) (SSL *s);
510 int (*ssl_accept) (SSL *s);
511 int (*ssl_connect) (SSL *s);
512 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
513 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
514 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
515 int (*ssl_shutdown) (SSL *s);
516 int (*ssl_renegotiate) (SSL *s);
517 int (*ssl_renegotiate_check) (SSL *s, int);
518 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
519 unsigned char *buf, size_t len, int peek,
521 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
523 int (*ssl_dispatch_alert) (SSL *s);
524 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
525 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
526 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
527 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
529 size_t (*ssl_pending) (const SSL *s);
530 int (*num_ciphers) (void);
531 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
532 OSSL_TIME (*get_timeout) (void);
533 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
534 int (*ssl_version) (void);
535 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
536 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
540 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
541 * consistency, even in the event of OPENSSL_NO_PSK being defined.
543 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512
546 * Lets make this into an ASN.1 type structure as follows
547 * SSL_SESSION_ID ::= SEQUENCE {
548 * version INTEGER, -- structure version number
549 * SSLversion INTEGER, -- SSL version number
550 * Cipher OCTET STRING, -- the 3 byte cipher ID
551 * Session_ID OCTET STRING, -- the Session ID
552 * Master_key OCTET STRING, -- the master key
553 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
554 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
555 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
556 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
557 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
558 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
559 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
560 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
561 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
562 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
563 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
564 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
565 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
566 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
568 * Look in ssl/ssl_asn1.c for more details
569 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
571 struct ssl_session_st {
572 int ssl_version; /* what ssl version session info is being kept
574 size_t master_key_length;
576 /* TLSv1.3 early_secret used for external PSKs */
577 unsigned char early_secret[EVP_MAX_MD_SIZE];
579 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
582 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
583 /* session_id - valid? */
584 size_t session_id_length;
585 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
587 * this is used to determine whether the session is being reused in the
588 * appropriate context. It is up to the application to set this, via
591 size_t sid_ctx_length;
592 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
593 # ifndef OPENSSL_NO_PSK
594 char *psk_identity_hint;
598 * Used to indicate that session resumption is not allowed. Applications
599 * can also set this bit for a new session via not_resumable_session_cb
600 * to disable session caching and tickets.
603 /* This is the cert and type for the other end. */
605 /* Certificate chain peer sent. */
606 STACK_OF(X509) *peer_chain;
608 * when app_verify_callback accepts a session where the peer's
609 * certificate is not ok, we must remember the error for session reuse:
611 long verify_result; /* only for servers */
612 CRYPTO_REF_COUNT references;
615 OSSL_TIME calc_timeout;
616 unsigned int compress_meth; /* Need to lookup the method */
617 const SSL_CIPHER *cipher;
618 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
619 * load the 'cipher' structure */
620 unsigned int kex_group; /* TLS group from key exchange */
621 CRYPTO_EX_DATA ex_data; /* application specific data */
623 * These are used to make removal of session-ids more efficient and to
624 * implement a maximum cache size.
626 struct ssl_session_st *prev, *next;
631 unsigned char *tick; /* Session ticket */
632 size_t ticklen; /* Session ticket length */
633 /* Session lifetime hint in seconds */
634 unsigned long tick_lifetime_hint;
635 uint32_t tick_age_add;
636 /* Max number of bytes that can be sent as early data */
637 uint32_t max_early_data;
638 /* The ALPN protocol selected for this session */
639 unsigned char *alpn_selected;
640 size_t alpn_selected_len;
642 * Maximum Fragment Length as per RFC 4366.
643 * If this value does not contain RFC 4366 allowed values (1-4) then
644 * either the Maximum Fragment Length Negotiation failed or was not
647 uint8_t max_fragment_len_mode;
649 # ifndef OPENSSL_NO_SRP
652 unsigned char *ticket_appdata;
653 size_t ticket_appdata_len;
659 /* Extended master secret support */
660 # define SSL_SESS_FLAG_EXTMS 0x1
662 # ifndef OPENSSL_NO_SRP
664 typedef struct srp_ctx_st {
665 /* param for all the callbacks */
667 /* set client Hello login callback */
668 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
669 /* set SRP N/g param callback for verification */
670 int (*SRP_verify_param_callback) (SSL *, void *);
671 /* set SRP client passwd callback */
672 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
674 BIGNUM *N, *g, *s, *B, *A;
678 unsigned long srp_Mask;
684 SSL_EARLY_DATA_NONE = 0,
685 SSL_EARLY_DATA_CONNECT_RETRY,
686 SSL_EARLY_DATA_CONNECTING,
687 SSL_EARLY_DATA_WRITE_RETRY,
688 SSL_EARLY_DATA_WRITING,
689 SSL_EARLY_DATA_WRITE_FLUSH,
690 SSL_EARLY_DATA_UNAUTH_WRITING,
691 SSL_EARLY_DATA_FINISHED_WRITING,
692 SSL_EARLY_DATA_ACCEPT_RETRY,
693 SSL_EARLY_DATA_ACCEPTING,
694 SSL_EARLY_DATA_READ_RETRY,
695 SSL_EARLY_DATA_READING,
696 SSL_EARLY_DATA_FINISHED_READING
697 } SSL_EARLY_DATA_STATE;
700 * We check that the amount of unreadable early data doesn't exceed
701 * max_early_data. max_early_data is given in plaintext bytes. However if it is
702 * unreadable then we only know the number of ciphertext bytes. We also don't
703 * know how much the overhead should be because it depends on the ciphersuite.
704 * We make a small allowance. We assume 5 records of actual data plus the end
705 * of early data alert record. Each record has a tag and a content type byte.
706 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
707 * content of the alert record either which is 2 bytes.
709 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
712 * The allowance we have between the client's calculated ticket age and our own.
713 * We allow for 10 seconds. If a ticket is presented and the
714 * client's age calculation is different by more than this than our own then we
715 * do not allow that ticket for early_data.
717 # define TICKET_AGE_ALLOWANCE ossl_seconds2time(10)
719 #define MAX_COMPRESSIONS_SIZE 255
727 typedef struct raw_extension_st {
728 /* Raw packet data for the extension */
730 /* Set to 1 if the extension is present or 0 otherwise */
732 /* Set to 1 if we have already parsed the extension or 0 otherwise */
734 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
736 /* Track what order extensions are received in (0-based). */
737 size_t received_order;
742 unsigned int legacy_version;
743 unsigned char random[SSL3_RANDOM_SIZE];
744 size_t session_id_len;
745 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
746 size_t dtls_cookie_len;
747 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
749 size_t compressions_len;
750 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
752 size_t pre_proc_exts_len;
753 RAW_EXTENSION *pre_proc_exts;
757 * Extension index values NOTE: Any updates to these defines should be mirrored
758 * with equivalent updates to ext_defs in extensions.c
760 typedef enum tlsext_index_en {
761 TLSEXT_IDX_renegotiate,
762 TLSEXT_IDX_server_name,
763 TLSEXT_IDX_max_fragment_length,
765 TLSEXT_IDX_ec_point_formats,
766 TLSEXT_IDX_supported_groups,
767 TLSEXT_IDX_session_ticket,
768 TLSEXT_IDX_status_request,
769 TLSEXT_IDX_next_proto_neg,
770 TLSEXT_IDX_application_layer_protocol_negotiation,
772 TLSEXT_IDX_encrypt_then_mac,
773 TLSEXT_IDX_signed_certificate_timestamp,
774 TLSEXT_IDX_extended_master_secret,
775 TLSEXT_IDX_signature_algorithms_cert,
776 TLSEXT_IDX_post_handshake_auth,
777 TLSEXT_IDX_signature_algorithms,
778 TLSEXT_IDX_supported_versions,
779 TLSEXT_IDX_psk_kex_modes,
780 TLSEXT_IDX_key_share,
782 TLSEXT_IDX_cryptopro_bug,
783 TLSEXT_IDX_compress_certificate,
784 TLSEXT_IDX_early_data,
785 TLSEXT_IDX_certificate_authorities,
788 /* Dummy index - must always be the last entry */
789 TLSEXT_IDX_num_builtins
792 DEFINE_LHASH_OF_EX(SSL_SESSION);
793 /* Needed in ssl_cert.c */
794 DEFINE_LHASH_OF_EX(X509_NAME);
796 # define TLSEXT_KEYNAME_LENGTH 16
797 # define TLSEXT_TICK_KEY_LENGTH 32
799 typedef struct ssl_ctx_ext_secure_st {
800 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
801 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
802 } SSL_CTX_EXT_SECURE;
805 * Helper function for HMAC
806 * The structure should be considered opaque, it will change once the low
807 * level deprecated calls are removed. At that point it can be replaced
808 * by EVP_MAC_CTX and most of the functions converted to macros or inlined
811 typedef struct ssl_hmac_st {
813 # ifndef OPENSSL_NO_DEPRECATED_3_0
818 SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx);
819 void ssl_hmac_free(SSL_HMAC *ctx);
820 # ifndef OPENSSL_NO_DEPRECATED_3_0
821 HMAC_CTX *ssl_hmac_get0_HMAC_CTX(SSL_HMAC *ctx);
823 EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx);
824 int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
825 int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
826 int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len,
828 size_t ssl_hmac_size(const SSL_HMAC *ctx);
830 int ssl_get_EC_curve_nid(const EVP_PKEY *pkey);
831 __owur int tls13_set_encoded_pub_key(EVP_PKEY *pkey,
832 const unsigned char *enckey,
835 typedef struct tls_group_info_st {
836 char *tlsname; /* Curve Name as in TLS specs */
837 char *realname; /* Curve Name according to provider */
838 char *algorithm; /* Algorithm name to fetch */
839 unsigned int secbits; /* Bits of security (from SP800-57) */
840 uint16_t group_id; /* Group ID */
841 int mintls; /* Minimum TLS version, -1 unsupported */
842 int maxtls; /* Maximum TLS version (or 0 for undefined) */
843 int mindtls; /* Minimum DTLS version, -1 unsupported */
844 int maxdtls; /* Maximum DTLS version (or 0 for undefined) */
845 char is_kem; /* Mode for this Group: 0 is KEX, 1 is KEM */
849 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
850 # define TLS_GROUP_CURVE_PRIME 0x00000001U
851 # define TLS_GROUP_CURVE_CHAR2 0x00000002U
852 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U
853 # define TLS_GROUP_FFDHE 0x00000008U
854 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
856 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
859 OSSL_LIB_CTX *libctx;
861 const SSL_METHOD *method;
862 STACK_OF(SSL_CIPHER) *cipher_list;
863 /* same as above but sorted for lookup */
864 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
865 /* TLSv1.3 specific ciphersuites */
866 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
867 struct x509_store_st /* X509_STORE */ *cert_store;
868 LHASH_OF(SSL_SESSION) *sessions;
870 * Most session-ids that will be cached, default is
871 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
873 size_t session_cache_size;
874 struct ssl_session_st *session_cache_head;
875 struct ssl_session_st *session_cache_tail;
877 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
878 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
879 * means only SSL_accept will cache SSL_SESSIONS.
881 uint32_t session_cache_mode;
883 * If timeout is not 0, it is the default timeout value set when
884 * SSL_new() is called. This has been put in to make life easier to set
887 OSSL_TIME session_timeout;
889 * If this callback is not null, it will be called each time a session id
890 * is added to the cache. If this function returns 1, it means that the
891 * callback will do a SSL_SESSION_free() when it has finished using it.
892 * Otherwise, on 0, it means the callback has finished with it. If
893 * remove_session_cb is not null, it will be called when a session-id is
894 * removed from the cache. After the call, OpenSSL will
895 * SSL_SESSION_free() it.
897 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
898 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
899 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
900 const unsigned char *data, int len,
903 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
904 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
905 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
906 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
907 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
908 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
909 TSAN_QUALIFIER int sess_miss; /* session lookup misses */
910 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
911 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
912 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
913 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
914 * the cache was passed back via
915 * the callback. This indicates
916 * that the application is
917 * supplying session-id's from
918 * other processes - spooky
921 #ifdef TSAN_REQUIRES_LOCKING
922 CRYPTO_RWLOCK *tsan_lock;
925 CRYPTO_REF_COUNT references;
927 /* if defined, these override the X509_verify_cert() calls */
928 int (*app_verify_callback) (X509_STORE_CTX *, void *);
929 void *app_verify_arg;
931 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
932 * ('app_verify_callback' was called with just one argument)
935 /* Default password callback. */
936 pem_password_cb *default_passwd_callback;
938 /* Default password callback user data. */
939 void *default_passwd_callback_userdata;
941 /* get client cert callback */
942 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
944 /* cookie generate callback */
945 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
946 unsigned int *cookie_len);
948 /* verify cookie callback */
949 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
950 unsigned int cookie_len);
952 /* TLS1.3 app-controlled cookie generate callback */
953 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
956 /* TLS1.3 verify app-controlled cookie callback */
957 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
960 CRYPTO_EX_DATA ex_data;
962 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
963 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3-sha1' */
965 STACK_OF(X509) *extra_certs;
966 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
968 /* Default values used when no per-SSL value is defined follow */
970 /* used if SSL's info_callback is NULL */
971 void (*info_callback) (const SSL *ssl, int type, int val);
974 * What we put in certificate_authorities extension for TLS 1.3
975 * (ClientHello and CertificateRequest) or just client cert requests for
976 * earlier versions. If client_ca_names is populated then it is only used
977 * for client cert requests, and in preference to ca_names.
979 STACK_OF(X509_NAME) *ca_names;
980 STACK_OF(X509_NAME) *client_ca_names;
983 * Default values to use in SSL structures follow (these are copied by
989 int min_proto_version;
990 int max_proto_version;
991 size_t max_cert_list;
993 struct cert_st /* CERT */ *cert;
996 /* callback that allows applications to peek at protocol messages */
997 void (*msg_callback) (int write_p, int version, int content_type,
998 const void *buf, size_t len, SSL *ssl, void *arg);
999 void *msg_callback_arg;
1001 uint32_t verify_mode;
1002 size_t sid_ctx_length;
1003 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1004 /* called 'verify_callback' in the SSL */
1005 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
1007 /* Default generate session ID callback. */
1008 GEN_SESSION_CB generate_session_id;
1010 X509_VERIFY_PARAM *param;
1014 # ifndef OPENSSL_NO_CT
1015 CTLOG_STORE *ctlog_store; /* CT Log Store */
1017 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1018 * If they are not, the connection should be aborted.
1020 ssl_ct_validation_cb ct_validation_callback;
1021 void *ct_validation_callback_arg;
1025 * If we're using more than one pipeline how should we divide the data
1026 * up between the pipes?
1028 size_t split_send_fragment;
1030 * Maximum amount of data to send in one fragment. actual record size can
1031 * be more than this due to padding and MAC overheads.
1033 size_t max_send_fragment;
1035 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1036 size_t max_pipelines;
1038 /* The default read buffer length to use (0 means not set) */
1039 size_t default_read_buf_len;
1041 # ifndef OPENSSL_NO_ENGINE
1043 * Engine to pass requests for client certs to
1045 ENGINE *client_cert_engine;
1048 /* ClientHello callback. Mostly for extensions, but not entirely. */
1049 SSL_client_hello_cb_fn client_hello_cb;
1050 void *client_hello_cb_arg;
1052 /* TLS extensions. */
1054 /* TLS extensions servername callback */
1055 int (*servername_cb) (SSL *, int *, void *);
1056 void *servername_arg;
1057 /* RFC 4507 session ticket keys */
1058 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
1059 SSL_CTX_EXT_SECURE *secure;
1060 # ifndef OPENSSL_NO_DEPRECATED_3_0
1061 /* Callback to support customisation of ticket key setting */
1062 int (*ticket_key_cb) (SSL *ssl,
1063 unsigned char *name, unsigned char *iv,
1064 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
1066 int (*ticket_key_evp_cb) (SSL *ssl,
1067 unsigned char *name, unsigned char *iv,
1068 EVP_CIPHER_CTX *ectx, EVP_MAC_CTX *hctx,
1071 /* certificate status request info */
1072 /* Callback for status request */
1073 int (*status_cb) (SSL *ssl, void *arg);
1075 /* ext status type used for CSR extension (OCSP Stapling) */
1077 /* RFC 4366 Maximum Fragment Length Negotiation */
1078 uint8_t max_fragment_len_mode;
1080 /* EC extension values inherited by SSL structure */
1081 size_t ecpointformats_len;
1082 unsigned char *ecpointformats;
1084 size_t supportedgroups_len;
1085 uint16_t *supportedgroups;
1087 uint16_t *supported_groups_default;
1088 size_t supported_groups_default_len;
1090 * ALPN information (we are in the process of transitioning from NPN to
1095 * For a server, this contains a callback function that allows the
1096 * server to select the protocol for the connection.
1097 * out: on successful return, this must point to the raw protocol
1098 * name (without the length prefix).
1099 * outlen: on successful return, this contains the length of |*out|.
1100 * in: points to the client's list of supported protocols in
1102 * inlen: the length of |in|.
1104 int (*alpn_select_cb) (SSL *s,
1105 const unsigned char **out,
1106 unsigned char *outlen,
1107 const unsigned char *in,
1108 unsigned int inlen, void *arg);
1109 void *alpn_select_cb_arg;
1112 * For a client, this contains the list of supported protocols in wire
1115 unsigned char *alpn;
1118 # ifndef OPENSSL_NO_NEXTPROTONEG
1119 /* Next protocol negotiation information */
1122 * For a server, this contains a callback function by which the set of
1123 * advertised protocols can be provided.
1125 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
1126 void *npn_advertised_cb_arg;
1128 * For a client, this contains a callback function that selects the next
1129 * protocol from the list provided by the server.
1131 SSL_CTX_npn_select_cb_func npn_select_cb;
1132 void *npn_select_cb_arg;
1135 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
1138 # ifndef OPENSSL_NO_PSK
1139 SSL_psk_client_cb_func psk_client_callback;
1140 SSL_psk_server_cb_func psk_server_callback;
1142 SSL_psk_find_session_cb_func psk_find_session_cb;
1143 SSL_psk_use_session_cb_func psk_use_session_cb;
1145 # ifndef OPENSSL_NO_SRP
1146 SRP_CTX srp_ctx; /* ctx for SRP authentication */
1149 /* Shared DANE context */
1150 struct dane_ctx_st dane;
1152 # ifndef OPENSSL_NO_SRTP
1153 /* SRTP profiles we are willing to do from RFC 5764 */
1154 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1157 * Callback for disabling session caching and ticket support on a session
1158 * basis, depending on the chosen cipher.
1160 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1162 CRYPTO_RWLOCK *lock;
1165 * Callback for logging key material for use with debugging tools like
1166 * Wireshark. The callback should log `line` followed by a newline.
1168 SSL_CTX_keylog_cb_func keylog_callback;
1171 * The maximum number of bytes advertised in session tickets that can be
1172 * sent as early data.
1174 uint32_t max_early_data;
1177 * The maximum number of bytes of early data that a server will tolerate
1178 * (which should be at least as much as max_early_data).
1180 uint32_t recv_max_early_data;
1182 /* TLS1.3 padding callback */
1183 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1184 void *record_padding_arg;
1185 size_t block_padding;
1187 /* Session ticket appdata */
1188 SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
1189 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
1190 void *ticket_cb_data;
1192 /* The number of TLS1.3 tickets to automatically send */
1195 /* Callback to determine if early_data is acceptable or not */
1196 SSL_allow_early_data_cb_fn allow_early_data_cb;
1197 void *allow_early_data_cb_data;
1199 /* Do we advertise Post-handshake auth support? */
1202 /* Callback for SSL async handling */
1203 SSL_async_callback_fn async_cb;
1208 int ssl_mac_pkey_id[SSL_MD_NUM_IDX];
1209 const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX];
1210 const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX];
1211 size_t ssl_mac_secret_size[SSL_MD_NUM_IDX];
1213 /* Cache of all sigalgs we know and whether they are available or not */
1214 struct sigalg_lookup_st *sigalg_lookup_cache;
1216 TLS_GROUP_INFO *group_list;
1217 size_t group_list_len;
1218 size_t group_list_max_len;
1220 /* masks of disabled algorithms */
1221 uint32_t disabled_enc_mask;
1222 uint32_t disabled_mac_mask;
1223 uint32_t disabled_mkey_mask;
1224 uint32_t disabled_auth_mask;
1226 #ifndef OPENSSL_NO_COMP_ALG
1227 /* certificate compression preferences */
1228 int cert_comp_prefs[TLSEXT_comp_cert_limit];
1232 typedef struct cert_pkey_st CERT_PKEY;
1234 #define SSL_TYPE_SSL_CONNECTION 0
1235 #define SSL_TYPE_QUIC_CONNECTION 1
1236 #define SSL_TYPE_QUIC_STREAM 2
1241 const SSL_METHOD *defltmeth;
1242 const SSL_METHOD *method;
1243 CRYPTO_REF_COUNT references;
1244 CRYPTO_RWLOCK *lock;
1245 /* extra application data */
1246 CRYPTO_EX_DATA ex_data;
1249 struct ssl_connection_st {
1250 /* type identifier and common data */
1253 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1258 * There are 2 BIO's even though they are normally both the same. This
1259 * is so data can be read and written to different handlers
1261 /* used by SSL_read */
1263 /* used by SSL_write */
1265 /* used during session-id reuse to concatenate messages */
1268 * This holds a variable that indicates what we were doing when a 0 or -1
1269 * is returned. This is needed for non-blocking IO so we know what
1270 * request needs re-doing when in SSL_accept or SSL_connect
1273 int (*handshake_func) (SSL *);
1275 * Imagine that here's a boolean member "init" that is switched as soon
1276 * as SSL_set_{accept/connect}_state is called for the first time, so
1277 * that "state" and "handshake_func" are properly initialized. But as
1278 * handshake_func is == 0 until then, we use this test instead of an
1281 /* are we the server side? */
1284 * Generate a new session or reuse an old one.
1285 * NB: For servers, the 'new' session may actually be a previously
1286 * cached session or even the previous session unless
1287 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1290 /* don't send shutdown packets */
1292 /* we have shut things down, 0x01 sent, 0x02 for received */
1296 SSL_EARLY_DATA_STATE early_data_state;
1297 BUF_MEM *init_buf; /* buffer used during init */
1298 void *init_msg; /* pointer to handshake message body, set by
1299 * ssl3_get_message() */
1300 size_t init_num; /* amount read/written */
1301 size_t init_off; /* amount read/written */
1305 unsigned char server_random[SSL3_RANDOM_SIZE];
1306 unsigned char client_random[SSL3_RANDOM_SIZE];
1308 /* used during startup, digest all incoming/outgoing packets */
1309 BIO *handshake_buffer;
1311 * When handshake digest is determined, buffer is hashed and
1312 * freed and MD_CTX for the required digest is stored here.
1314 EVP_MD_CTX *handshake_dgst;
1316 * Set whenever an expected ChangeCipherSpec message is processed.
1317 * Unset when the peer's Finished message is received.
1318 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1320 int change_cipher_spec;
1324 * we allow one fatal and one warning alert to be outstanding, send close
1325 * alert via the warning alert
1328 unsigned char send_alert[2];
1330 * This flag is set when we should renegotiate ASAP, basically when there
1331 * is no more data in the read or write buffers
1334 int total_renegotiations;
1335 int num_renegotiations;
1336 int in_read_app_data;
1338 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1339 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1340 size_t finish_md_len;
1341 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1342 size_t peer_finish_md_len;
1343 size_t message_size;
1345 /* used to hold the new cipher we are going to use */
1346 const SSL_CIPHER *new_cipher;
1347 EVP_PKEY *pkey; /* holds short lived key exchange key */
1348 /* used for certificate requests */
1350 /* Certificate types in certificate request message. */
1353 /* Certificate authorities list peer sent */
1354 STACK_OF(X509_NAME) *peer_ca_names;
1355 size_t key_block_length;
1356 unsigned char *key_block;
1357 const EVP_CIPHER *new_sym_enc;
1358 const EVP_MD *new_hash;
1359 int new_mac_pkey_type;
1360 size_t new_mac_secret_size;
1361 # ifndef OPENSSL_NO_COMP
1362 const SSL_COMP *new_compression;
1364 char *new_compression;
1367 /* Raw values of the cipher list from a client */
1368 unsigned char *ciphers_raw;
1369 size_t ciphers_rawlen;
1370 /* Temporary storage for premaster secret */
1373 # ifndef OPENSSL_NO_PSK
1374 /* Temporary storage for PSK key */
1378 /* Signature algorithm we actually use */
1379 const struct sigalg_lookup_st *sigalg;
1380 /* Pointer to certificate we use */
1383 * signature algorithms peer reports: e.g. supported signature
1384 * algorithms extension for server or as part of a certificate
1385 * request for client.
1386 * Keep track of the algorithms for TLS and X.509 usage separately.
1388 uint16_t *peer_sigalgs;
1389 uint16_t *peer_cert_sigalgs;
1390 /* Size of above arrays */
1391 size_t peer_sigalgslen;
1392 size_t peer_cert_sigalgslen;
1393 /* Sigalg peer actually uses */
1394 const struct sigalg_lookup_st *peer_sigalg;
1396 * Set if corresponding CERT_PKEY can be used with current
1397 * SSL session: e.g. appropriate curve, signature algorithms etc.
1398 * If zero it can't be used at all.
1400 uint32_t valid_flags[SSL_PKEY_NUM];
1402 * For servers the following masks are for the key and auth algorithms
1403 * that are supported by the certs below. For clients they are masks of
1404 * *disabled* algorithms based on the current session.
1409 * The following are used by the client to see if a cipher is allowed or
1410 * not. It contains the minimum and maximum version the client's using
1411 * based on what it knows so far.
1417 /* Connection binding to prevent renegotiation attacks */
1418 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1419 size_t previous_client_finished_len;
1420 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1421 size_t previous_server_finished_len;
1422 int send_connection_binding;
1424 # ifndef OPENSSL_NO_NEXTPROTONEG
1426 * Set if we saw the Next Protocol Negotiation extension from our peer.
1432 * ALPN information (we are in the process of transitioning from NPN to
1437 * In a server these point to the selected ALPN protocol after the
1438 * ClientHello has been processed. In a client these contain the protocol
1439 * that the server selected once the ServerHello has been processed.
1441 unsigned char *alpn_selected;
1442 size_t alpn_selected_len;
1443 /* used by the server to know what options were proposed */
1444 unsigned char *alpn_proposed;
1445 size_t alpn_proposed_len;
1446 /* used by the client to know if it actually sent alpn */
1450 * This is set to true if we believe that this is a version of Safari
1451 * running on OS X 10.6 or newer. We wish to know this because Safari on
1452 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1454 char is_probably_safari;
1457 * Track whether we did a key exchange this handshake or not, so
1458 * SSL_get_negotiated_group() knows whether to fall back to the
1459 * value in the SSL_SESSION.
1462 /* For clients: peer temporary key */
1463 /* The group_id for the key exchange key */
1469 struct dtls1_state_st *d1; /* DTLSv1 variables */
1470 /* callback that allows applications to peek at protocol messages */
1471 void (*msg_callback) (int write_p, int version, int content_type,
1472 const void *buf, size_t len, SSL *ssl, void *arg);
1473 void *msg_callback_arg;
1474 int hit; /* reusing a previous session */
1475 X509_VERIFY_PARAM *param;
1476 /* Per connection DANE state */
1479 STACK_OF(SSL_CIPHER) *peer_ciphers;
1480 STACK_OF(SSL_CIPHER) *cipher_list;
1481 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1482 /* TLSv1.3 specific ciphersuites */
1483 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
1485 * These are the ones being used, the ones in SSL_SESSION are the ones to
1486 * be 'copied' into these ones
1490 * The TLS1.3 secrets.
1492 unsigned char early_secret[EVP_MAX_MD_SIZE];
1493 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1494 unsigned char master_secret[EVP_MAX_MD_SIZE];
1495 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
1496 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1497 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1498 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1499 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1500 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1501 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1502 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1503 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
1507 /* This is used to hold the server certificate used */
1508 struct cert_st /* CERT */ *cert;
1511 * The hash of all messages prior to the CertificateVerify, and the length
1514 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1515 size_t cert_verify_hash_len;
1517 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1518 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE}
1519 hello_retry_request;
1522 * the session_id_context is used to ensure sessions are only reused in
1523 * the appropriate context
1525 size_t sid_ctx_length;
1526 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1527 /* This can also be in the session once a session is established */
1528 SSL_SESSION *session;
1529 /* TLSv1.3 PSK session */
1530 SSL_SESSION *psksession;
1531 unsigned char *psksession_id;
1532 size_t psksession_id_len;
1533 /* Default generate session ID callback. */
1534 GEN_SESSION_CB generate_session_id;
1536 * The temporary TLSv1.3 session id. This isn't really a session id at all
1537 * but is a random value sent in the legacy session id field.
1539 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
1540 size_t tmp_session_id_len;
1543 * 0 don't care about verify failure.
1544 * 1 fail if verify fails
1546 uint32_t verify_mode;
1547 /* fail if callback returns 0 */
1548 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1549 /* optional informational callback */
1550 void (*info_callback) (const SSL *ssl, int type, int val);
1551 /* error bytes to be written */
1555 # ifndef OPENSSL_NO_PSK
1556 SSL_psk_client_cb_func psk_client_callback;
1557 SSL_psk_server_cb_func psk_server_callback;
1559 SSL_psk_find_session_cb_func psk_find_session_cb;
1560 SSL_psk_use_session_cb_func psk_use_session_cb;
1562 /* Verified chain of peer */
1563 STACK_OF(X509) *verified_chain;
1566 * What we put in certificate_authorities extension for TLS 1.3
1567 * (ClientHello and CertificateRequest) or just client cert requests for
1568 * earlier versions. If client_ca_names is populated then it is only used
1569 * for client cert requests, and in preference to ca_names.
1571 STACK_OF(X509_NAME) *ca_names;
1572 STACK_OF(X509_NAME) *client_ca_names;
1573 /* protocol behaviour */
1577 int min_proto_version;
1578 int max_proto_version;
1579 size_t max_cert_list;
1582 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1583 * secret and SSLv3/TLS (<=1.2) rollback check
1587 * If we're using more than one pipeline how should we divide the data
1588 * up between the pipes?
1590 size_t split_send_fragment;
1592 * Maximum amount of data to send in one fragment. actual record size can
1593 * be more than this due to padding and MAC overheads.
1595 size_t max_send_fragment;
1596 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1597 size_t max_pipelines;
1600 /* Built-in extension flags */
1601 uint8_t extflags[TLSEXT_IDX_num_builtins];
1602 /* TLS extension debug callback */
1603 void (*debug_cb)(SSL *s, int client_server, int type,
1604 const unsigned char *data, int len, void *arg);
1607 /* certificate status request info */
1608 /* Status type or -1 if no status type */
1610 /* Raw extension data, if seen */
1611 unsigned char *scts;
1612 /* Length of raw extension data, if seen */
1614 /* Expect OCSP CertificateStatus message */
1615 int status_expected;
1618 /* OCSP status request only */
1619 STACK_OF(OCSP_RESPID) *ids;
1620 X509_EXTENSIONS *exts;
1621 /* OCSP response received or to be sent */
1622 unsigned char *resp;
1626 /* RFC4507 session ticket expected to be received or sent */
1627 int ticket_expected;
1628 /* TLS 1.3 tickets requested by the application. */
1629 int extra_tickets_expected;
1630 size_t ecpointformats_len;
1632 unsigned char *ecpointformats;
1634 size_t peer_ecpointformats_len;
1636 unsigned char *peer_ecpointformats;
1637 size_t supportedgroups_len;
1639 uint16_t *supportedgroups;
1641 size_t peer_supportedgroups_len;
1643 uint16_t *peer_supportedgroups;
1645 /* TLS Session Ticket extension override */
1646 TLS_SESSION_TICKET_EXT *session_ticket;
1647 /* TLS Session Ticket extension callback */
1648 tls_session_ticket_ext_cb_fn session_ticket_cb;
1649 void *session_ticket_cb_arg;
1650 /* TLS pre-shared secret session resumption */
1651 tls_session_secret_cb_fn session_secret_cb;
1652 void *session_secret_cb_arg;
1654 * For a client, this contains the list of supported protocols in wire
1657 unsigned char *alpn;
1660 * Next protocol negotiation. For the client, this is the protocol that
1661 * we sent in NextProtocol and is set when handling ServerHello
1662 * extensions. For a server, this is the client's selected_protocol from
1663 * NextProtocol and is set when handling the NextProtocol message, before
1664 * the Finished message.
1669 /* The available PSK key exchange modes */
1672 /* Set to one if we have negotiated ETM */
1675 /* Are we expecting to receive early data? */
1677 /* Is the session suitable for early data? */
1680 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1681 unsigned char *tls13_cookie;
1682 size_t tls13_cookie_len;
1683 /* Have we received a cookie from the client? */
1687 * Maximum Fragment Length as per RFC 4366.
1688 * If this member contains one of the allowed values (1-4)
1689 * then we should include Maximum Fragment Length Negotiation
1690 * extension in Client Hello.
1691 * Please note that value of this member does not have direct
1692 * effect. The actual (binding) value is stored in SSL_SESSION,
1693 * as this extension is optional on server side.
1695 uint8_t max_fragment_len_mode;
1698 * On the client side the number of ticket identities we sent in the
1699 * ClientHello. On the server side the identity of the ticket we
1704 /* This is the list of algorithms the peer supports that we also support */
1705 int compress_certificate_from_peer[TLSEXT_comp_cert_limit];
1706 /* indicate that we sent the extension, so we'll accept it */
1707 int compress_certificate_sent;
1711 * Parsed form of the ClientHello, kept around across client_hello_cb
1714 CLIENTHELLO_MSG *clienthello;
1717 * no further mod of servername
1718 * 0 : call the servername extension callback.
1719 * 1 : prepare 2, allow last ack just after in server callback.
1720 * 2 : don't call servername callback, no ack in server hello
1722 int servername_done;
1723 # ifndef OPENSSL_NO_CT
1725 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1726 * If they are not, the connection should be aborted.
1728 ssl_ct_validation_cb ct_validation_callback;
1729 /* User-supplied argument that is passed to the ct_validation_callback */
1730 void *ct_validation_callback_arg;
1732 * Consolidated stack of SCTs from all sources.
1733 * Lazily populated by CT_get_peer_scts(SSL*)
1735 STACK_OF(SCT) *scts;
1736 /* Have we attempted to find/parse SCTs yet? */
1739 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1740 # ifndef OPENSSL_NO_SRTP
1742 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1743 /* What's been chosen */
1744 SRTP_PROTECTION_PROFILE *srtp_profile;
1747 * 1 if we are renegotiating.
1748 * 2 if we are a server and are inside a handshake
1749 * (i.e. not just sending a HelloRequest)
1752 /* If sending a KeyUpdate is pending */
1754 /* Post-handshake authentication state */
1755 SSL_PHA_STATE post_handshake_auth;
1757 uint8_t* pha_context;
1758 size_t pha_context_len;
1760 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
1762 # ifndef OPENSSL_NO_SRP
1763 /* ctx for SRP authentication */
1767 * Callback for disabling session caching and ticket support on a session
1768 * basis, depending on the chosen cipher.
1770 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1772 /* Record layer data */
1773 RECORD_LAYER rlayer;
1775 /* Default password callback. */
1776 pem_password_cb *default_passwd_callback;
1777 /* Default password callback user data. */
1778 void *default_passwd_callback_userdata;
1779 /* Async Job info */
1781 ASYNC_WAIT_CTX *waitctx;
1785 * The maximum number of bytes advertised in session tickets that can be
1786 * sent as early data.
1788 uint32_t max_early_data;
1790 * The maximum number of bytes of early data that a server will tolerate
1791 * (which should be at least as much as max_early_data).
1793 uint32_t recv_max_early_data;
1796 * The number of bytes of early data received so far. If we accepted early
1797 * data then this is a count of the plaintext bytes. If we rejected it then
1798 * this is a count of the ciphertext bytes.
1800 uint32_t early_data_count;
1802 /* The number of TLS1.3 tickets to automatically send */
1804 /* The number of TLS1.3 tickets actually sent so far */
1805 size_t sent_tickets;
1806 /* The next nonce value to use when we send a ticket on this connection */
1807 uint64_t next_ticket_nonce;
1809 /* Callback to determine if early_data is acceptable or not */
1810 SSL_allow_early_data_cb_fn allow_early_data_cb;
1811 void *allow_early_data_cb_data;
1813 /* Callback for SSL async handling */
1814 SSL_async_callback_fn async_cb;
1818 * Signature algorithms shared by client and server: cached because these
1819 * are used most often.
1821 const struct sigalg_lookup_st **shared_sigalgs;
1822 size_t shared_sigalgslen;
1824 #ifndef OPENSSL_NO_COMP_ALG
1825 /* certificate compression preferences */
1826 int cert_comp_prefs[TLSEXT_comp_cert_limit];
1830 # define SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, c) \
1831 ((ssl) == NULL ? NULL \
1832 : ((ssl)->type == SSL_TYPE_SSL_CONNECTION \
1833 ? (c SSL_CONNECTION *)(ssl) \
1835 # define SSL_CONNECTION_NO_CONST
1836 # define SSL_CONNECTION_FROM_SSL_ONLY(ssl) \
1837 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, SSL_CONNECTION_NO_CONST)
1838 # define SSL_CONNECTION_FROM_CONST_SSL_ONLY(ssl) \
1839 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, const)
1840 # define SSL_CONNECTION_GET_CTX(sc) ((sc)->ssl.ctx)
1841 # define SSL_CONNECTION_GET_SSL(sc) (&(sc)->ssl)
1842 # ifndef OPENSSL_NO_QUIC
1843 # include "quic/quic_local.h"
1844 # define SSL_CONNECTION_FROM_SSL_int(ssl, c) \
1845 ((ssl) == NULL ? NULL \
1846 : ((ssl)->type == SSL_TYPE_SSL_CONNECTION \
1847 ? (c SSL_CONNECTION *)(ssl) \
1848 : ((ssl)->type == SSL_TYPE_QUIC_CONNECTION \
1849 ? (c SSL_CONNECTION *)((c QUIC_CONNECTION *)(ssl))->tls \
1851 # define SSL_CONNECTION_FROM_SSL(ssl) \
1852 SSL_CONNECTION_FROM_SSL_int(ssl, SSL_CONNECTION_NO_CONST)
1853 # define SSL_CONNECTION_FROM_CONST_SSL(ssl) \
1854 SSL_CONNECTION_FROM_SSL_int(ssl, const)
1856 # define SSL_CONNECTION_FROM_SSL(ssl) \
1857 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, SSL_CONNECTION_NO_CONST)
1858 # define SSL_CONNECTION_FROM_CONST_SSL(ssl) \
1859 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, const)
1863 * Structure containing table entry of values associated with the signature
1864 * algorithms (signature scheme) extension
1866 typedef struct sigalg_lookup_st {
1867 /* TLS 1.3 signature scheme name */
1869 /* Raw value used in extension */
1871 /* NID of hash algorithm or NID_undef if no hash */
1873 /* Index of hash algorithm or -1 if no hash algorithm */
1875 /* NID of signature algorithm */
1877 /* Index of signature algorithm */
1879 /* Combined hash and signature NID, if any */
1881 /* Required public key curve (ECDSA only) */
1883 /* Whether this signature algorithm is actually available for use */
1888 * Structure containing table entry of certificate info corresponding to
1892 int nid; /* NID of public key algorithm */
1893 uint32_t amask; /* authmask corresponding to key type */
1896 /* DTLS structures */
1898 # ifndef OPENSSL_NO_SCTP
1899 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1902 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1903 # define DTLS1_MAX_MTU_OVERHEAD 48
1906 * Flag used in message reuse to indicate the buffer contains the record
1907 * header as well as the handshake message header.
1909 # define DTLS1_SKIP_RECORD_HEADER 2
1911 struct dtls1_retransmit_state {
1912 const OSSL_RECORD_METHOD *wrlmethod;
1913 OSSL_RECORD_LAYER *wrl;
1916 struct hm_header_st {
1922 unsigned int is_ccs;
1923 struct dtls1_retransmit_state saved_retransmit_state;
1926 typedef struct hm_fragment_st {
1927 struct hm_header_st msg_header;
1928 unsigned char *fragment;
1929 unsigned char *reassembly;
1932 typedef struct pqueue_st pqueue;
1933 typedef struct pitem_st pitem;
1936 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1941 typedef struct pitem_st *piterator;
1943 pitem *pitem_new(unsigned char *prio64be, void *data);
1944 void pitem_free(pitem *item);
1945 pqueue *pqueue_new(void);
1946 void pqueue_free(pqueue *pq);
1947 pitem *pqueue_insert(pqueue *pq, pitem *item);
1948 pitem *pqueue_peek(pqueue *pq);
1949 pitem *pqueue_pop(pqueue *pq);
1950 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1951 pitem *pqueue_iterator(pqueue *pq);
1952 pitem *pqueue_next(piterator *iter);
1953 size_t pqueue_size(pqueue *pq);
1955 typedef struct dtls1_state_st {
1956 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1958 unsigned int cookie_verified;
1959 /* handshake message numbers */
1960 unsigned short handshake_write_seq;
1961 unsigned short next_handshake_write_seq;
1962 unsigned short handshake_read_seq;
1963 /* Buffered handshake messages */
1964 pqueue *buffered_messages;
1965 /* Buffered (sent) handshake records */
1966 pqueue *sent_messages;
1967 size_t link_mtu; /* max on-the-wire DTLS packet size */
1968 size_t mtu; /* max DTLS packet size */
1969 struct hm_header_st w_msg_hdr;
1970 struct hm_header_st r_msg_hdr;
1971 /* Number of alerts received so far */
1972 unsigned int timeout_num_alerts;
1974 * Indicates when the last handshake msg sent will timeout
1976 OSSL_TIME next_timeout;
1977 /* Timeout duration */
1978 unsigned int timeout_duration_us;
1980 unsigned int retransmitting;
1981 # ifndef OPENSSL_NO_SCTP
1982 int shutdown_received;
1985 DTLS_timer_cb timer_cb;
1990 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1992 # define EXPLICIT_PRIME_CURVE_TYPE 1
1993 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1994 # define NAMED_CURVE_TYPE 3
1996 # ifndef OPENSSL_NO_COMP_ALG
1997 struct ossl_comp_cert_st {
1998 unsigned char *data;
2001 CRYPTO_REF_COUNT references;
2002 CRYPTO_RWLOCK *lock;
2005 typedef struct ossl_comp_cert_st OSSL_COMP_CERT;
2007 void OSSL_COMP_CERT_free(OSSL_COMP_CERT *c);
2008 int OSSL_COMP_CERT_up_ref(OSSL_COMP_CERT *c);
2011 struct cert_pkey_st {
2013 EVP_PKEY *privatekey;
2014 /* Chain for this certificate */
2015 STACK_OF(X509) *chain;
2017 * serverinfo data for this certificate. The data is in TLS Extension
2018 * wire format, specifically it's a series of records like:
2019 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
2021 * uint8_t data[length];
2023 unsigned char *serverinfo;
2024 size_t serverinfo_length;
2025 # ifndef OPENSSL_NO_COMP_ALG
2026 /* Compressed certificate data - index 0 is unused */
2027 OSSL_COMP_CERT *comp_cert[TLSEXT_comp_cert_limit];
2031 /* Retrieve Suite B flags */
2032 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
2033 /* Uses to check strict mode: suite B modes are always strict */
2034 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
2035 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
2038 ENDPOINT_CLIENT = 0,
2045 unsigned short ext_type;
2047 /* The context which this extension applies to */
2048 unsigned int context;
2050 * Per-connection flags relating to this extension type: not used if
2051 * part of an SSL_CTX structure.
2054 SSL_custom_ext_add_cb_ex add_cb;
2055 SSL_custom_ext_free_cb_ex free_cb;
2057 SSL_custom_ext_parse_cb_ex parse_cb;
2059 } custom_ext_method;
2061 /* ext_flags values */
2064 * Indicates an extension has been received. Used to check for unsolicited or
2065 * duplicate extensions.
2067 # define SSL_EXT_FLAG_RECEIVED 0x1
2069 * Indicates an extension has been sent: used to enable sending of
2070 * corresponding ServerHello extension.
2072 # define SSL_EXT_FLAG_SENT 0x2
2075 custom_ext_method *meths;
2077 } custom_ext_methods;
2079 typedef struct cert_st {
2080 /* Current active set */
2082 * ALWAYS points to an element of the pkeys array
2083 * Probably it would make more sense to store
2084 * an index, not a pointer.
2089 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
2091 /* Flags related to certificates */
2092 uint32_t cert_flags;
2093 CERT_PKEY pkeys[SSL_PKEY_NUM];
2094 /* Custom certificate types sent in certificate request message. */
2098 * supported signature algorithms. When set on a client this is sent in
2099 * the client hello as the supported signature algorithms extension. For
2100 * servers it represents the signature algorithms we are willing to use.
2102 uint16_t *conf_sigalgs;
2103 /* Size of above array */
2104 size_t conf_sigalgslen;
2106 * Client authentication signature algorithms, if not set then uses
2107 * conf_sigalgs. On servers these will be the signature algorithms sent
2108 * to the client in a certificate request for TLS 1.2. On a client this
2109 * represents the signature algorithms we are willing to use for client
2112 uint16_t *client_sigalgs;
2113 /* Size of above array */
2114 size_t client_sigalgslen;
2116 * Certificate setup callback: if set is called whenever a certificate
2117 * may be required (client or server). the callback can then examine any
2118 * appropriate parameters and setup any certificates required. This
2119 * allows advanced applications to select certificates on the fly: for
2120 * example based on supported signature algorithms or curves.
2122 int (*cert_cb) (SSL *ssl, void *arg);
2125 * Optional X509_STORE for chain building or certificate validation If
2126 * NULL the parent SSL_CTX store is used instead.
2128 X509_STORE *chain_store;
2129 X509_STORE *verify_store;
2130 /* Custom extensions */
2131 custom_ext_methods custext;
2132 /* Security callback */
2133 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
2134 void *other, void *ex);
2135 /* Security level */
2138 # ifndef OPENSSL_NO_PSK
2139 /* If not NULL psk identity hint to use for servers */
2140 char *psk_identity_hint;
2142 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
2143 CRYPTO_RWLOCK *lock;
2146 # define FP_ICC (int (*)(const void *,const void *))
2149 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
2150 * of a mess of functions, but hell, think of it as an opaque structure :-)
2152 typedef struct ssl3_enc_method {
2153 int (*setup_key_block) (SSL_CONNECTION *);
2154 int (*generate_master_secret) (SSL_CONNECTION *, unsigned char *,
2155 unsigned char *, size_t, size_t *);
2156 int (*change_cipher_state) (SSL_CONNECTION *, int);
2157 size_t (*final_finish_mac) (SSL_CONNECTION *, const char *, size_t,
2159 const char *client_finished_label;
2160 size_t client_finished_label_len;
2161 const char *server_finished_label;
2162 size_t server_finished_label_len;
2163 int (*alert_value) (int);
2164 int (*export_keying_material) (SSL_CONNECTION *, unsigned char *, size_t,
2165 const char *, size_t,
2166 const unsigned char *, size_t,
2168 /* Various flags indicating protocol version requirements */
2170 /* Set the handshake header */
2171 int (*set_handshake_header) (SSL_CONNECTION *s, WPACKET *pkt, int type);
2172 /* Close construction of the handshake message */
2173 int (*close_construct_packet) (SSL_CONNECTION *s, WPACKET *pkt, int htype);
2174 /* Write out handshake message */
2175 int (*do_write) (SSL_CONNECTION *s);
2178 # define ssl_set_handshake_header(s, pkt, htype) \
2179 SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
2180 # define ssl_close_construct_packet(s, pkt, htype) \
2181 SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
2182 # define ssl_do_write(s) SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->do_write(s)
2184 /* Values for enc_flags */
2186 /* Uses explicit IV for CBC mode */
2187 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
2188 /* Uses signature algorithms extension */
2189 # define SSL_ENC_FLAG_SIGALGS 0x2
2190 /* Uses SHA256 default PRF */
2191 # define SSL_ENC_FLAG_SHA256_PRF 0x4
2193 # define SSL_ENC_FLAG_DTLS 0x8
2195 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
2196 * apply to others in future.
2198 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2200 # ifndef OPENSSL_NO_COMP
2201 /* Used for holding the relevant compression methods loaded into SSL_CTX */
2202 typedef struct ssl3_comp_st {
2203 int comp_id; /* The identifier byte for this compression
2205 char *name; /* Text name used for the compression type */
2206 COMP_METHOD *method; /* The method :-) */
2210 typedef enum downgrade_en {
2217 * Dummy status type for the status_type extension. Indicates no status type
2220 #define TLSEXT_STATUSTYPE_nothing -1
2222 /* Sigalgs values */
2223 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2224 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2225 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2226 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2227 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2228 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2229 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2230 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2231 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2232 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2233 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2234 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2235 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2236 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2237 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2238 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2239 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2240 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2241 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2242 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2243 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2244 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840
2245 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841
2246 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2247 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2248 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2250 #define TLSEXT_SIGALG_ed25519 0x0807
2251 #define TLSEXT_SIGALG_ed448 0x0808
2252 #define TLSEXT_SIGALG_ecdsa_brainpoolP256r1_sha256 0x081a
2253 #define TLSEXT_SIGALG_ecdsa_brainpoolP384r1_sha384 0x081b
2254 #define TLSEXT_SIGALG_ecdsa_brainpoolP512r1_sha512 0x081c
2256 /* Known PSK key exchange modes */
2257 #define TLSEXT_KEX_MODE_KE 0x00
2258 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2261 * Internal representations of key exchange modes
2263 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2264 #define TLSEXT_KEX_MODE_FLAG_KE 1
2265 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2267 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
2268 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2270 /* A dummy signature value not valid for TLSv1.2 signature algs */
2271 #define TLSEXT_signature_rsa_pss 0x0101
2273 /* TLSv1.3 downgrade protection sentinel values */
2274 extern const unsigned char tls11downgrade[8];
2275 extern const unsigned char tls12downgrade[8];
2277 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
2279 __owur const SSL_METHOD *ssl_bad_method(int ver);
2280 __owur const SSL_METHOD *sslv3_method(void);
2281 __owur const SSL_METHOD *sslv3_server_method(void);
2282 __owur const SSL_METHOD *sslv3_client_method(void);
2283 __owur const SSL_METHOD *tlsv1_method(void);
2284 __owur const SSL_METHOD *tlsv1_server_method(void);
2285 __owur const SSL_METHOD *tlsv1_client_method(void);
2286 __owur const SSL_METHOD *tlsv1_1_method(void);
2287 __owur const SSL_METHOD *tlsv1_1_server_method(void);
2288 __owur const SSL_METHOD *tlsv1_1_client_method(void);
2289 __owur const SSL_METHOD *tlsv1_2_method(void);
2290 __owur const SSL_METHOD *tlsv1_2_server_method(void);
2291 __owur const SSL_METHOD *tlsv1_2_client_method(void);
2292 __owur const SSL_METHOD *tlsv1_3_method(void);
2293 __owur const SSL_METHOD *tlsv1_3_server_method(void);
2294 __owur const SSL_METHOD *tlsv1_3_client_method(void);
2295 __owur const SSL_METHOD *dtlsv1_method(void);
2296 __owur const SSL_METHOD *dtlsv1_server_method(void);
2297 __owur const SSL_METHOD *dtlsv1_client_method(void);
2298 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
2299 __owur const SSL_METHOD *dtlsv1_2_method(void);
2300 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
2301 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
2303 extern const SSL3_ENC_METHOD TLSv1_enc_data;
2304 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
2305 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
2306 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
2307 extern const SSL3_ENC_METHOD SSLv3_enc_data;
2308 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
2309 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
2312 * Flags for SSL methods
2314 # define SSL_METHOD_NO_FIPS (1U<<0)
2315 # define SSL_METHOD_NO_SUITEB (1U<<1)
2317 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2318 s_connect, enc_data) \
2319 const SSL_METHOD *func_name(void) \
2321 static const SSL_METHOD func_name##_data= { \
2325 ossl_ssl_connection_new, \
2326 ossl_ssl_connection_free, \
2327 ossl_ssl_connection_reset, \
2338 ssl3_renegotiate_check, \
2341 ssl3_dispatch_alert, \
2344 ssl3_get_cipher_by_char, \
2345 ssl3_put_cipher_by_char, \
2349 tls1_default_timeout, \
2351 ssl_undefined_void_function, \
2352 ssl3_callback_ctrl, \
2353 ssl3_ctx_callback_ctrl, \
2355 return &func_name##_data; \
2358 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2359 const SSL_METHOD *func_name(void) \
2361 static const SSL_METHOD func_name##_data= { \
2363 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2365 ossl_ssl_connection_new, \
2366 ossl_ssl_connection_free, \
2367 ossl_ssl_connection_reset, \
2378 ssl3_renegotiate_check, \
2381 ssl3_dispatch_alert, \
2384 ssl3_get_cipher_by_char, \
2385 ssl3_put_cipher_by_char, \
2389 ssl3_default_timeout, \
2391 ssl_undefined_void_function, \
2392 ssl3_callback_ctrl, \
2393 ssl3_ctx_callback_ctrl, \
2395 return &func_name##_data; \
2398 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2399 s_connect, enc_data) \
2400 const SSL_METHOD *func_name(void) \
2402 static const SSL_METHOD func_name##_data= { \
2406 ossl_ssl_connection_new, \
2407 ossl_ssl_connection_free, \
2408 ossl_ssl_connection_reset, \
2419 ssl3_renegotiate_check, \
2421 dtls1_write_app_data_bytes, \
2422 dtls1_dispatch_alert, \
2425 ssl3_get_cipher_by_char, \
2426 ssl3_put_cipher_by_char, \
2430 dtls1_default_timeout, \
2432 ssl_undefined_void_function, \
2433 ssl3_callback_ctrl, \
2434 ssl3_ctx_callback_ctrl, \
2436 return &func_name##_data; \
2439 struct openssl_ssl_test_functions {
2440 int (*p_ssl_init_wbio_buffer) (SSL_CONNECTION *s);
2443 const char *ssl_protocol_to_string(int version);
2445 /* Returns true if certificate and private key for 'idx' are present */
2446 static ossl_inline int ssl_has_cert(const SSL_CONNECTION *s, int idx)
2448 if (idx < 0 || idx >= SSL_PKEY_NUM)
2450 return s->cert->pkeys[idx].x509 != NULL
2451 && s->cert->pkeys[idx].privatekey != NULL;
2454 static ossl_inline void tls1_get_peer_groups(SSL_CONNECTION *s,
2455 const uint16_t **pgroups,
2458 *pgroups = s->ext.peer_supportedgroups;
2459 *pgroupslen = s->ext.peer_supportedgroups_len;
2462 # ifndef OPENSSL_UNIT_TEST
2464 __owur int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method,
2466 __owur SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method);
2467 __owur SSL *ossl_ssl_connection_new(SSL_CTX *ctx);
2468 void ossl_ssl_connection_free(SSL *ssl);
2469 __owur int ossl_ssl_connection_reset(SSL *ssl);
2471 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2472 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2473 int ssl_clear_bad_session(SSL_CONNECTION *s);
2474 __owur CERT *ssl_cert_new(void);
2475 __owur CERT *ssl_cert_dup(CERT *cert);
2476 void ssl_cert_clear_certs(CERT *c);
2477 void ssl_cert_free(CERT *c);
2478 __owur int ssl_generate_session_id(SSL_CONNECTION *s, SSL_SESSION *ss);
2479 __owur int ssl_get_new_session(SSL_CONNECTION *s, int session);
2480 __owur SSL_SESSION *lookup_sess_in_cache(SSL_CONNECTION *s,
2481 const unsigned char *sess_id,
2482 size_t sess_id_len);
2483 __owur int ssl_get_prev_session(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello);
2484 __owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket);
2485 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2486 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2487 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2488 const SSL_CIPHER *const *bp);
2489 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
2490 STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
2491 STACK_OF(SSL_CIPHER) **cipher_list,
2492 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
2493 const char *rule_str,
2495 __owur int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites,
2497 __owur int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
2498 STACK_OF(SSL_CIPHER) **skp,
2499 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2501 void ssl_update_cache(SSL_CONNECTION *s, int mode);
2502 __owur int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc,
2503 const EVP_CIPHER **enc);
2504 __owur int ssl_cipher_get_evp(SSL_CTX *ctxc, const SSL_SESSION *s,
2505 const EVP_CIPHER **enc, const EVP_MD **md,
2506 int *mac_pkey_type, size_t *mac_secret_size,
2507 SSL_COMP **comp, int use_etm);
2508 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2509 size_t *int_overhead, size_t *blocksize,
2510 size_t *ext_overhead);
2511 __owur int ssl_cert_is_disabled(SSL_CTX *ctx, size_t idx);
2512 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL_CONNECTION *ssl,
2513 const unsigned char *ptr,
2515 __owur int ssl_cert_set0_chain(SSL_CONNECTION *s, SSL_CTX *ctx,
2516 STACK_OF(X509) *chain);
2517 __owur int ssl_cert_set1_chain(SSL_CONNECTION *s, SSL_CTX *ctx,
2518 STACK_OF(X509) *chain);
2519 __owur int ssl_cert_add0_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x);
2520 __owur int ssl_cert_add1_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x);
2521 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2522 __owur int ssl_cert_set_current(CERT *c, long arg);
2523 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2525 __owur int ssl_verify_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk);
2526 __owur int ssl_build_cert_chain(SSL_CONNECTION *s, SSL_CTX *ctx, int flags);
2527 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2529 __owur int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain);
2531 __owur int ssl_security(const SSL_CONNECTION *s, int op, int bits, int nid,
2533 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2535 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp);
2537 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx);
2538 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2540 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
2542 int ssl_undefined_function(SSL *s);
2543 __owur int ssl_undefined_void_function(void);
2544 __owur int ssl_undefined_const_function(const SSL *s);
2545 __owur int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
2546 const unsigned char **serverinfo,
2547 size_t *serverinfo_length);
2548 void ssl_set_masks(SSL_CONNECTION *s);
2549 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *sc);
2550 __owur int ssl_x509err2alert(int type);
2551 void ssl_sort_cipher_list(void);
2552 int ssl_load_ciphers(SSL_CTX *ctx);
2553 __owur int ssl_setup_sig_algs(SSL_CTX *ctx);
2554 int ssl_load_groups(SSL_CTX *ctx);
2555 __owur int ssl_fill_hello_random(SSL_CONNECTION *s, int server,
2556 unsigned char *field, size_t len,
2558 __owur int ssl_generate_master_secret(SSL_CONNECTION *s, unsigned char *pms,
2559 size_t pmslen, int free_pms);
2560 __owur EVP_PKEY *ssl_generate_pkey(SSL_CONNECTION *s, EVP_PKEY *pm);
2561 __owur int ssl_gensecret(SSL_CONNECTION *s, unsigned char *pms, size_t pmslen);
2562 __owur int ssl_derive(SSL_CONNECTION *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2564 __owur int ssl_decapsulate(SSL_CONNECTION *s, EVP_PKEY *privkey,
2565 const unsigned char *ct, size_t ctlen,
2567 __owur int ssl_encapsulate(SSL_CONNECTION *s, EVP_PKEY *pubkey,
2568 unsigned char **ctp, size_t *ctlenp,
2570 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2571 __owur int ssl_set_tmp_ecdh_groups(uint16_t **pext, size_t *pextlen,
2573 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc);
2574 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc);
2576 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2577 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2578 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2579 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2581 int ssl3_init_finished_mac(SSL_CONNECTION *s);
2582 __owur int ssl3_setup_key_block(SSL_CONNECTION *s);
2583 __owur int ssl3_change_cipher_state(SSL_CONNECTION *s, int which);
2584 void ssl3_cleanup_key_block(SSL_CONNECTION *s);
2585 __owur int ssl3_do_write(SSL_CONNECTION *s, int type);
2586 int ssl3_send_alert(SSL_CONNECTION *s, int level, int desc);
2587 __owur int ssl3_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2588 unsigned char *p, size_t len,
2589 size_t *secret_size);
2590 __owur int ssl3_get_req_cert_type(SSL_CONNECTION *s, WPACKET *pkt);
2591 __owur int ssl3_num_ciphers(void);
2592 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2593 int ssl3_renegotiate(SSL *ssl);
2594 int ssl3_renegotiate_check(SSL *ssl, int initok);
2595 void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
2596 OSSL_PARAM params[]);
2597 __owur int ssl3_dispatch_alert(SSL *s);
2598 __owur size_t ssl3_final_finish_mac(SSL_CONNECTION *s, const char *sender,
2599 size_t slen, unsigned char *p);
2600 __owur int ssl3_finish_mac(SSL_CONNECTION *s, const unsigned char *buf,
2602 void ssl3_free_digest_list(SSL_CONNECTION *s);
2603 __owur unsigned long ssl3_output_cert_chain(SSL_CONNECTION *s, WPACKET *pkt,
2604 CERT_PKEY *cpk, int for_comp);
2605 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL_CONNECTION *s,
2606 STACK_OF(SSL_CIPHER) *clnt,
2607 STACK_OF(SSL_CIPHER) *srvr);
2608 __owur int ssl3_digest_cached_records(SSL_CONNECTION *s, int keep);
2609 __owur int ssl3_new(SSL *s);
2610 void ssl3_free(SSL *s);
2611 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2612 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2613 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2614 __owur int ssl3_shutdown(SSL *s);
2615 int ssl3_clear(SSL *s);
2616 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2617 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2618 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2619 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2621 __owur int ssl3_do_change_cipher_spec(SSL_CONNECTION *s);
2622 __owur OSSL_TIME ssl3_default_timeout(void);
2624 __owur int ssl3_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt,
2626 __owur int tls_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2627 __owur int tls_setup_handshake(SSL_CONNECTION *s);
2628 __owur int dtls1_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2629 __owur int dtls1_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2630 __owur int ssl3_handshake_write(SSL_CONNECTION *s);
2632 __owur int ssl_allow_compression(SSL_CONNECTION *s);
2634 __owur int ssl_version_supported(const SSL_CONNECTION *s, int version,
2635 const SSL_METHOD **meth);
2637 __owur int ssl_set_client_hello_version(SSL_CONNECTION *s);
2638 __owur int ssl_check_version_downgrade(SSL_CONNECTION *s);
2639 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2640 __owur int ssl_choose_server_version(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello,
2642 __owur int ssl_choose_client_version(SSL_CONNECTION *s, int version,
2643 RAW_EXTENSION *extensions);
2644 __owur int ssl_get_min_max_version(const SSL_CONNECTION *s, int *min_version,
2645 int *max_version, int *real_max);
2647 __owur OSSL_TIME tls1_default_timeout(void);
2648 __owur int dtls1_do_write(SSL_CONNECTION *s, int type);
2649 void dtls1_set_message_header(SSL_CONNECTION *s,
2652 size_t frag_off, size_t frag_len);
2654 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2657 __owur int dtls1_read_failed(SSL_CONNECTION *s, int code);
2658 __owur int dtls1_buffer_message(SSL_CONNECTION *s, int ccs);
2659 __owur int dtls1_retransmit_message(SSL_CONNECTION *s, unsigned short seq,
2661 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2662 int dtls1_retransmit_buffered_messages(SSL_CONNECTION *s);
2663 void dtls1_clear_received_buffer(SSL_CONNECTION *s);
2664 void dtls1_clear_sent_buffer(SSL_CONNECTION *s);
2665 void dtls1_get_message_header(unsigned char *data,
2666 struct hm_header_st *msg_hdr);
2667 __owur OSSL_TIME dtls1_default_timeout(void);
2668 __owur OSSL_TIME *dtls1_get_timeout(SSL_CONNECTION *s, OSSL_TIME *timeleft);
2669 __owur int dtls1_check_timeout_num(SSL_CONNECTION *s);
2670 __owur int dtls1_handle_timeout(SSL_CONNECTION *s);
2671 void dtls1_start_timer(SSL_CONNECTION *s);
2672 void dtls1_stop_timer(SSL_CONNECTION *s);
2673 __owur int dtls1_is_timer_expired(SSL_CONNECTION *s);
2674 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2676 __owur size_t dtls1_min_mtu(SSL_CONNECTION *s);
2677 void dtls1_hm_fragment_free(hm_fragment *frag);
2678 __owur int dtls1_query_mtu(SSL_CONNECTION *s);
2680 __owur int tls1_new(SSL *s);
2681 void tls1_free(SSL *s);
2682 int tls1_clear(SSL *s);
2684 __owur int dtls1_new(SSL *s);
2685 void dtls1_free(SSL *s);
2686 int dtls1_clear(SSL *s);
2687 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2688 __owur int dtls1_shutdown(SSL *s);
2690 __owur int dtls1_dispatch_alert(SSL *s);
2692 __owur int ssl_init_wbio_buffer(SSL_CONNECTION *s);
2693 int ssl_free_wbio_buffer(SSL_CONNECTION *s);
2695 __owur int tls1_change_cipher_state(SSL_CONNECTION *s, int which);
2696 __owur int tls1_setup_key_block(SSL_CONNECTION *s);
2697 __owur size_t tls1_final_finish_mac(SSL_CONNECTION *s, const char *str,
2698 size_t slen, unsigned char *p);
2699 __owur int tls1_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2700 unsigned char *p, size_t len,
2701 size_t *secret_size);
2702 __owur int tls13_setup_key_block(SSL_CONNECTION *s);
2703 __owur size_t tls13_final_finish_mac(SSL_CONNECTION *s, const char *str, size_t slen,
2705 __owur int tls13_change_cipher_state(SSL_CONNECTION *s, int which);
2706 __owur int tls13_update_key(SSL_CONNECTION *s, int send);
2707 __owur int tls13_hkdf_expand(SSL_CONNECTION *s,
2709 const unsigned char *secret,
2710 const unsigned char *label, size_t labellen,
2711 const unsigned char *data, size_t datalen,
2712 unsigned char *out, size_t outlen, int fatal);
2713 __owur int tls13_hkdf_expand_ex(OSSL_LIB_CTX *libctx, const char *propq,
2715 const unsigned char *secret,
2716 const unsigned char *label, size_t labellen,
2717 const unsigned char *data, size_t datalen,
2718 unsigned char *out, size_t outlen,
2720 __owur int tls13_derive_key(SSL_CONNECTION *s, const EVP_MD *md,
2721 const unsigned char *secret, unsigned char *key,
2723 __owur int tls13_derive_iv(SSL_CONNECTION *s, const EVP_MD *md,
2724 const unsigned char *secret, unsigned char *iv,
2726 __owur int tls13_derive_finishedkey(SSL_CONNECTION *s, const EVP_MD *md,
2727 const unsigned char *secret,
2728 unsigned char *fin, size_t finlen);
2729 int tls13_generate_secret(SSL_CONNECTION *s, const EVP_MD *md,
2730 const unsigned char *prevsecret,
2731 const unsigned char *insecret,
2733 unsigned char *outsecret);
2734 __owur int tls13_generate_handshake_secret(SSL_CONNECTION *s,
2735 const unsigned char *insecret,
2736 size_t insecretlen);
2737 __owur int tls13_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2738 unsigned char *prev, size_t prevlen,
2739 size_t *secret_size);
2740 __owur int tls1_export_keying_material(SSL_CONNECTION *s,
2741 unsigned char *out, size_t olen,
2742 const char *label, size_t llen,
2743 const unsigned char *p, size_t plen,
2745 __owur int tls13_export_keying_material(SSL_CONNECTION *s,
2746 unsigned char *out, size_t olen,
2747 const char *label, size_t llen,
2748 const unsigned char *context,
2749 size_t contextlen, int use_context);
2750 __owur int tls13_export_keying_material_early(SSL_CONNECTION *s,
2751 unsigned char *out, size_t olen,
2752 const char *label, size_t llen,
2753 const unsigned char *context,
2755 __owur int tls1_alert_code(int code);
2756 __owur int tls13_alert_code(int code);
2757 __owur int ssl3_alert_code(int code);
2759 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s);
2761 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2763 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t curve_id);
2764 __owur int tls1_group_id2nid(uint16_t group_id, int include_unknown);
2765 __owur uint16_t tls1_nid2group_id(int nid);
2766 __owur int tls1_check_group_id(SSL_CONNECTION *s, uint16_t group_id,
2767 int check_own_curves);
2768 __owur uint16_t tls1_shared_group(SSL_CONNECTION *s, int nmatch);
2769 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2770 int *curves, size_t ncurves);
2771 __owur int tls1_set_groups_list(SSL_CTX *ctx, uint16_t **pext, size_t *pextlen,
2773 __owur EVP_PKEY *ssl_generate_pkey_group(SSL_CONNECTION *s, uint16_t id);
2774 __owur int tls_valid_group(SSL_CONNECTION *s, uint16_t group_id, int minversion,
2775 int maxversion, int isec, int *okfortls13);
2776 __owur EVP_PKEY *ssl_generate_param_group(SSL_CONNECTION *s, uint16_t id);
2777 void tls1_get_formatlist(SSL_CONNECTION *s, const unsigned char **pformats,
2778 size_t *num_formats);
2779 __owur int tls1_check_ec_tmp_key(SSL_CONNECTION *s, unsigned long id);
2781 __owur int tls_group_allowed(SSL_CONNECTION *s, uint16_t curve, int op);
2782 void tls1_get_supported_groups(SSL_CONNECTION *s, const uint16_t **pgroups,
2783 size_t *pgroupslen);
2785 __owur int tls1_set_server_sigalgs(SSL_CONNECTION *s);
2787 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL_CONNECTION *s,
2788 CLIENTHELLO_MSG *hello,
2790 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL_CONNECTION *s,
2791 const unsigned char *etick,
2793 const unsigned char *sess_id,
2794 size_t sesslen, SSL_SESSION **psess);
2796 __owur int tls_use_ticket(SSL_CONNECTION *s);
2798 void ssl_set_sig_mask(uint32_t *pmask_a, SSL_CONNECTION *s, int op);
2800 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2801 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2803 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2805 int tls1_check_chain(SSL_CONNECTION *s, X509 *x, EVP_PKEY *pk,
2806 STACK_OF(X509) *chain, int idx);
2807 void tls1_set_cert_validity(SSL_CONNECTION *s);
2809 # ifndef OPENSSL_NO_CT
2810 __owur int ssl_validate_ct(SSL_CONNECTION *s);
2813 __owur EVP_PKEY *ssl_get_auto_dh(SSL_CONNECTION *s);
2815 __owur int ssl_security_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x, int vfy,
2817 __owur int ssl_security_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk,
2820 int tls_choose_sigalg(SSL_CONNECTION *s, int fatalerrs);
2822 __owur long ssl_get_algorithm2(SSL_CONNECTION *s);
2823 __owur int tls12_copy_sigalgs(SSL_CONNECTION *s, WPACKET *pkt,
2824 const uint16_t *psig, size_t psiglen);
2825 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2826 __owur int tls1_save_sigalgs(SSL_CONNECTION *s, PACKET *pkt, int cert);
2827 __owur int tls1_process_sigalgs(SSL_CONNECTION *s);
2828 __owur int tls1_set_peer_legacy_sigalg(SSL_CONNECTION *s, const EVP_PKEY *pkey);
2829 __owur int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu,
2830 const EVP_MD **pmd);
2831 __owur size_t tls12_get_psigalgs(SSL_CONNECTION *s, int sent,
2832 const uint16_t **psigs);
2833 __owur int tls_check_sigalg_curve(const SSL_CONNECTION *s, int curve);
2834 __owur int tls12_check_peer_sigalg(SSL_CONNECTION *s, uint16_t, EVP_PKEY *pkey);
2835 __owur int ssl_set_client_disabled(SSL_CONNECTION *s);
2836 __owur int ssl_cipher_disabled(const SSL_CONNECTION *s, const SSL_CIPHER *c,
2839 __owur int ssl_handshake_hash(SSL_CONNECTION *s,
2840 unsigned char *out, size_t outlen,
2842 __owur const EVP_MD *ssl_md(SSL_CTX *ctx, int idx);
2843 __owur const EVP_MD *ssl_handshake_md(SSL_CONNECTION *s);
2844 __owur const EVP_MD *ssl_prf_md(SSL_CONNECTION *s);
2847 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2848 * with |ssl|, if logging is enabled. It returns one on success and zero on
2849 * failure. The entry is identified by the first 8 bytes of
2850 * |encrypted_premaster|.
2852 __owur int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *s,
2853 const uint8_t *encrypted_premaster,
2854 size_t encrypted_premaster_len,
2855 const uint8_t *premaster,
2856 size_t premaster_len);
2859 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2860 * logging is available. It returns one on success and zero on failure. It tags
2861 * the entry with |label|.
2863 __owur int ssl_log_secret(SSL_CONNECTION *s, const char *label,
2864 const uint8_t *secret, size_t secret_len);
2866 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2867 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2868 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2869 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2870 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2871 #define CLIENT_APPLICATION_N_LABEL "CLIENT_TRAFFIC_SECRET_N"
2872 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2873 #define SERVER_APPLICATION_N_LABEL "SERVER_TRAFFIC_SECRET_N"
2874 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2875 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2877 __owur int srp_generate_server_master_secret(SSL_CONNECTION *s);
2878 __owur int srp_generate_client_master_secret(SSL_CONNECTION *s);
2879 __owur int srp_verify_server_param(SSL_CONNECTION *s);
2881 /* statem/statem_srvr.c */
2883 __owur int send_certificate_request(SSL_CONNECTION *s);
2885 /* statem/extensions_cust.c */
2887 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2888 ENDPOINT role, unsigned int ext_type,
2891 void custom_ext_init(custom_ext_methods *meths);
2893 int ossl_tls_add_custom_ext_intern(SSL_CTX *ctx, custom_ext_methods *exts,
2894 ENDPOINT role, unsigned int ext_type,
2895 unsigned int context,
2896 SSL_custom_ext_add_cb_ex add_cb,
2897 SSL_custom_ext_free_cb_ex free_cb,
2899 SSL_custom_ext_parse_cb_ex parse_cb,
2901 __owur int custom_ext_parse(SSL_CONNECTION *s, unsigned int context,
2902 unsigned int ext_type,
2903 const unsigned char *ext_data, size_t ext_size,
2904 X509 *x, size_t chainidx);
2905 __owur int custom_ext_add(SSL_CONNECTION *s, int context, WPACKET *pkt, X509 *x,
2906 size_t chainidx, int maxversion);
2908 __owur int custom_exts_copy(custom_ext_methods *dst,
2909 const custom_ext_methods *src);
2910 __owur int custom_exts_copy_flags(custom_ext_methods *dst,
2911 const custom_ext_methods *src);
2912 void custom_exts_free(custom_ext_methods *exts);
2914 void ssl_comp_free_compression_methods_int(void);
2917 void ssl_ctx_system_config(SSL_CTX *ctx);
2919 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
2921 const char *properties);
2922 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher);
2923 void ssl_evp_cipher_free(const EVP_CIPHER *cipher);
2924 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
2926 const char *properties);
2927 int ssl_evp_md_up_ref(const EVP_MD *md);
2928 void ssl_evp_md_free(const EVP_MD *md);
2930 int tls_provider_set_tls_params(SSL_CONNECTION *s, EVP_CIPHER_CTX *ctx,
2931 const EVP_CIPHER *ciph,
2934 void tls_engine_finish(ENGINE *e);
2935 const EVP_CIPHER *tls_get_cipher_from_engine(int nid);
2936 const EVP_MD *tls_get_digest_from_engine(int nid);
2937 int tls_engine_load_ssl_client_cert(SSL_CONNECTION *s, X509 **px509,
2939 int ssl_hmac_old_new(SSL_HMAC *ret);
2940 void ssl_hmac_old_free(SSL_HMAC *ctx);
2941 int ssl_hmac_old_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
2942 int ssl_hmac_old_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
2943 int ssl_hmac_old_final(SSL_HMAC *ctx, unsigned char *md, size_t *len);
2944 size_t ssl_hmac_old_size(const SSL_HMAC *ctx);
2946 int ssl_ctx_srp_ctx_free_intern(SSL_CTX *ctx);
2947 int ssl_ctx_srp_ctx_init_intern(SSL_CTX *ctx);
2948 int ssl_srp_ctx_free_intern(SSL_CONNECTION *s);
2949 int ssl_srp_ctx_init_intern(SSL_CONNECTION *s);
2951 int ssl_srp_calc_a_param_intern(SSL_CONNECTION *s);
2952 int ssl_srp_server_param_with_username_intern(SSL_CONNECTION *s, int *ad);
2954 void ssl_session_calculate_timeout(SSL_SESSION *ss);
2956 # else /* OPENSSL_UNIT_TEST */
2958 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2962 /* Some helper routines to support TSAN operations safely */
2963 static ossl_unused ossl_inline int ssl_tsan_lock(const SSL_CTX *ctx)
2965 #ifdef TSAN_REQUIRES_LOCKING
2966 if (!CRYPTO_THREAD_write_lock(ctx->tsan_lock))
2972 static ossl_unused ossl_inline void ssl_tsan_unlock(const SSL_CTX *ctx)
2974 #ifdef TSAN_REQUIRES_LOCKING
2975 CRYPTO_THREAD_unlock(ctx->tsan_lock);
2979 static ossl_unused ossl_inline void ssl_tsan_counter(const SSL_CTX *ctx,
2980 TSAN_QUALIFIER int *stat)
2982 if (ssl_tsan_lock(ctx)) {
2984 ssl_tsan_unlock(ctx);
2988 int ossl_comp_has_alg(int a);
2989 size_t ossl_calculate_comp_expansion(int alg, size_t length);
2991 void ossl_ssl_set_custom_record_layer(SSL_CONNECTION *s,
2992 const OSSL_RECORD_METHOD *meth,