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/comp.h>
23 # include <openssl/bio.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 "record/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))
151 * Define the Bitmasks for SSL_CIPHER.algorithms.
152 * This bits are used packed as dense as possible. If new methods/ciphers
153 * etc will be added, the bits a likely to change, so this information
154 * is for internal library use only, even though SSL_CIPHER.algorithms
155 * can be publicly accessed.
156 * Use the according functions for cipher management instead.
158 * The bit mask handling in the selection and sorting scheme in
159 * ssl_create_cipher_list() has only limited capabilities, reflecting
160 * that the different entities within are mutually exclusive:
161 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
164 /* Bits for algorithm_mkey (key exchange algorithm) */
165 /* RSA key exchange */
166 # define SSL_kRSA 0x00000001U
167 /* tmp DH key no DH cert */
168 # define SSL_kDHE 0x00000002U
170 # define SSL_kEDH SSL_kDHE
172 # define SSL_kECDHE 0x00000004U
174 # define SSL_kEECDH SSL_kECDHE
176 # define SSL_kPSK 0x00000008U
177 /* GOST key exchange */
178 # define SSL_kGOST 0x00000010U
180 # define SSL_kSRP 0x00000020U
182 # define SSL_kRSAPSK 0x00000040U
183 # define SSL_kECDHEPSK 0x00000080U
184 # define SSL_kDHEPSK 0x00000100U
185 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */
186 # define SSL_kGOST18 0x00000200U
190 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
192 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
193 # define SSL_kANY 0x00000000U
195 /* Bits for algorithm_auth (server authentication) */
197 # define SSL_aRSA 0x00000001U
199 # define SSL_aDSS 0x00000002U
200 /* no auth (i.e. use ADH or AECDH) */
201 # define SSL_aNULL 0x00000004U
203 # define SSL_aECDSA 0x00000008U
205 # define SSL_aPSK 0x00000010U
206 /* GOST R 34.10-2001 signature auth */
207 # define SSL_aGOST01 0x00000020U
209 # define SSL_aSRP 0x00000040U
210 /* GOST R 34.10-2012 signature auth */
211 # define SSL_aGOST12 0x00000080U
212 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
213 # define SSL_aANY 0x00000000U
214 /* All bits requiring a certificate */
216 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
218 /* Bits for algorithm_enc (symmetric encryption) */
219 # define SSL_DES 0x00000001U
220 # define SSL_3DES 0x00000002U
221 # define SSL_RC4 0x00000004U
222 # define SSL_RC2 0x00000008U
223 # define SSL_IDEA 0x00000010U
224 # define SSL_eNULL 0x00000020U
225 # define SSL_AES128 0x00000040U
226 # define SSL_AES256 0x00000080U
227 # define SSL_CAMELLIA128 0x00000100U
228 # define SSL_CAMELLIA256 0x00000200U
229 # define SSL_eGOST2814789CNT 0x00000400U
230 # define SSL_SEED 0x00000800U
231 # define SSL_AES128GCM 0x00001000U
232 # define SSL_AES256GCM 0x00002000U
233 # define SSL_AES128CCM 0x00004000U
234 # define SSL_AES256CCM 0x00008000U
235 # define SSL_AES128CCM8 0x00010000U
236 # define SSL_AES256CCM8 0x00020000U
237 # define SSL_eGOST2814789CNT12 0x00040000U
238 # define SSL_CHACHA20POLY1305 0x00080000U
239 # define SSL_ARIA128GCM 0x00100000U
240 # define SSL_ARIA256GCM 0x00200000U
241 # define SSL_MAGMA 0x00400000U
242 # define SSL_KUZNYECHIK 0x00800000U
244 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
245 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
246 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
247 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
248 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
249 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
250 # define SSL_ARIA (SSL_ARIAGCM)
251 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \
252 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \
253 | SSL_CAMELLIA256 | SSL_SEED)
255 /* Bits for algorithm_mac (symmetric authentication) */
257 # define SSL_MD5 0x00000001U
258 # define SSL_SHA1 0x00000002U
259 # define SSL_GOST94 0x00000004U
260 # define SSL_GOST89MAC 0x00000008U
261 # define SSL_SHA256 0x00000010U
262 # define SSL_SHA384 0x00000020U
263 /* Not a real MAC, just an indication it is part of cipher */
264 # define SSL_AEAD 0x00000040U
265 # define SSL_GOST12_256 0x00000080U
266 # define SSL_GOST89MAC12 0x00000100U
267 # define SSL_GOST12_512 0x00000200U
268 # define SSL_MAGMAOMAC 0x00000400U
269 # define SSL_KUZNYECHIKOMAC 0x00000800U
272 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
273 * sure to update this constant too
276 # define SSL_MD_MD5_IDX 0
277 # define SSL_MD_SHA1_IDX 1
278 # define SSL_MD_GOST94_IDX 2
279 # define SSL_MD_GOST89MAC_IDX 3
280 # define SSL_MD_SHA256_IDX 4
281 # define SSL_MD_SHA384_IDX 5
282 # define SSL_MD_GOST12_256_IDX 6
283 # define SSL_MD_GOST89MAC12_IDX 7
284 # define SSL_MD_GOST12_512_IDX 8
285 # define SSL_MD_MD5_SHA1_IDX 9
286 # define SSL_MD_SHA224_IDX 10
287 # define SSL_MD_SHA512_IDX 11
288 # define SSL_MD_MAGMAOMAC_IDX 12
289 # define SSL_MD_KUZNYECHIKOMAC_IDX 13
290 # define SSL_MAX_DIGEST 14
292 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
294 /* Bits for algorithm2 (handshake digests and other extra flags) */
296 /* Bits 0-7 are handshake MAC */
297 # define SSL_HANDSHAKE_MAC_MASK 0xFF
298 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
299 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
300 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
301 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
302 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
303 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
304 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
306 /* Bits 8-15 bits are PRF */
307 # define TLS1_PRF_DGST_SHIFT 8
308 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
309 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
310 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
311 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
312 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
313 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
314 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
317 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
318 * goes into algorithm2)
320 # define TLS1_STREAM_MAC 0x10000
322 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites
323 * (currently this also goes into algorithm2)
325 # define TLS1_TLSTREE 0x20000
327 # define SSL_STRONG_MASK 0x0000001FU
328 # define SSL_DEFAULT_MASK 0X00000020U
330 # define SSL_STRONG_NONE 0x00000001U
331 # define SSL_LOW 0x00000002U
332 # define SSL_MEDIUM 0x00000004U
333 # define SSL_HIGH 0x00000008U
334 # define SSL_FIPS 0x00000010U
335 # define SSL_NOT_DEFAULT 0x00000020U
337 /* we have used 0000003f - 26 bits left to go */
339 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
340 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
342 /* Check if an SSL structure is using DTLS */
343 # define SSL_CONNECTION_IS_DTLS(s) \
344 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
346 /* Check if we are using TLSv1.3 */
347 # define SSL_CONNECTION_IS_TLS13(s) (!SSL_CONNECTION_IS_DTLS(s) \
348 && SSL_CONNECTION_GET_SSL(s)->method->version >= TLS1_3_VERSION \
349 && SSL_CONNECTION_GET_SSL(s)->method->version != TLS_ANY_VERSION)
351 # define SSL_CONNECTION_TREAT_AS_TLS13(s) \
352 (SSL_CONNECTION_IS_TLS13(s) \
353 || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
354 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
355 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
356 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
357 || (s)->hello_retry_request == SSL_HRR_PENDING)
359 # define SSL_IS_FIRST_HANDSHAKE(s) ((s)->s3.tmp.finish_md_len == 0 \
360 || (s)->s3.tmp.peer_finish_md_len == 0)
362 /* See if we need explicit IV */
363 # define SSL_USE_EXPLICIT_IV(s) \
364 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
366 * See if we use signature algorithms extension and signature algorithm
369 # define SSL_USE_SIGALGS(s) \
370 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
372 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
373 * apply to others in future.
375 # define SSL_USE_TLS1_2_CIPHERS(s) \
376 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
378 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
379 * flags because it may not be set to correct version yet.
381 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
382 ((!SSL_CONNECTION_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
383 (SSL_CONNECTION_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
385 * Determine if a client should send signature algorithms extension:
386 * as with TLS1.2 cipher we can't rely on method flags.
388 # define SSL_CLIENT_USE_SIGALGS(s) \
389 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
391 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
392 (((value) >= TLSEXT_max_fragment_length_512) && \
393 ((value) <= TLSEXT_max_fragment_length_4096))
394 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
395 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
396 # define GET_MAX_FRAGMENT_LENGTH(session) \
397 (512U << (session->ext.max_fragment_len_mode - 1))
399 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
400 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
402 /* Mostly for SSLv3 */
403 # define SSL_PKEY_RSA 0
404 # define SSL_PKEY_RSA_PSS_SIGN 1
405 # define SSL_PKEY_DSA_SIGN 2
406 # define SSL_PKEY_ECC 3
407 # define SSL_PKEY_GOST01 4
408 # define SSL_PKEY_GOST12_256 5
409 # define SSL_PKEY_GOST12_512 6
410 # define SSL_PKEY_ED25519 7
411 # define SSL_PKEY_ED448 8
412 # define SSL_PKEY_NUM 9
414 # define SSL_ENC_DES_IDX 0
415 # define SSL_ENC_3DES_IDX 1
416 # define SSL_ENC_RC4_IDX 2
417 # define SSL_ENC_RC2_IDX 3
418 # define SSL_ENC_IDEA_IDX 4
419 # define SSL_ENC_NULL_IDX 5
420 # define SSL_ENC_AES128_IDX 6
421 # define SSL_ENC_AES256_IDX 7
422 # define SSL_ENC_CAMELLIA128_IDX 8
423 # define SSL_ENC_CAMELLIA256_IDX 9
424 # define SSL_ENC_GOST89_IDX 10
425 # define SSL_ENC_SEED_IDX 11
426 # define SSL_ENC_AES128GCM_IDX 12
427 # define SSL_ENC_AES256GCM_IDX 13
428 # define SSL_ENC_AES128CCM_IDX 14
429 # define SSL_ENC_AES256CCM_IDX 15
430 # define SSL_ENC_AES128CCM8_IDX 16
431 # define SSL_ENC_AES256CCM8_IDX 17
432 # define SSL_ENC_GOST8912_IDX 18
433 # define SSL_ENC_CHACHA_IDX 19
434 # define SSL_ENC_ARIA128GCM_IDX 20
435 # define SSL_ENC_ARIA256GCM_IDX 21
436 # define SSL_ENC_MAGMA_IDX 22
437 # define SSL_ENC_KUZNYECHIK_IDX 23
438 # define SSL_ENC_NUM_IDX 24
441 * SSL_kRSA <- RSA_ENC
442 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
443 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
444 * SSL_aRSA <- RSA_ENC | RSA_SIGN
445 * SSL_aDSS <- DSA_SIGN
449 #define CERT_INVALID 0
450 #define CERT_PUBLIC_KEY 1
451 #define CERT_PRIVATE_KEY 2
454 /* Post-Handshake Authentication state */
457 SSL_PHA_EXT_SENT, /* client-side only: extension sent */
458 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
459 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
460 SSL_PHA_REQUESTED /* request received by client, or sent by server */
463 /* CipherSuite length. SSLv3 and all TLS versions. */
464 # define TLS_CIPHER_LEN 2
465 /* used to hold info on the particular ciphers used */
466 struct ssl_cipher_st {
468 const char *name; /* text name */
469 const char *stdname; /* RFC name */
470 uint32_t id; /* id, 4 bytes, first is version */
472 * changed in 1.0.0: these four used to be portions of a single value
475 uint32_t algorithm_mkey; /* key exchange algorithm */
476 uint32_t algorithm_auth; /* server authentication */
477 uint32_t algorithm_enc; /* symmetric encryption */
478 uint32_t algorithm_mac; /* symmetric authentication */
479 int min_tls; /* minimum SSL/TLS protocol version */
480 int max_tls; /* maximum SSL/TLS protocol version */
481 int min_dtls; /* minimum DTLS protocol version */
482 int max_dtls; /* maximum DTLS protocol version */
483 uint32_t algo_strength; /* strength and export flags */
484 uint32_t algorithm2; /* Extra flags */
485 int32_t strength_bits; /* Number of bits really used */
486 uint32_t alg_bits; /* Number of bits for algorithm */
489 /* Used to hold SSL/TLS functions */
490 struct ssl_method_st {
494 SSL *(*ssl_new) (SSL_CTX *ctx);
495 void (*ssl_free) (SSL *s);
496 int (*ssl_reset) (SSL *s);
497 int (*ssl_init) (SSL *s);
498 int (*ssl_clear) (SSL *s);
499 void (*ssl_deinit) (SSL *s);
500 int (*ssl_accept) (SSL *s);
501 int (*ssl_connect) (SSL *s);
502 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
503 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
504 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
505 int (*ssl_shutdown) (SSL *s);
506 int (*ssl_renegotiate) (SSL *s);
507 int (*ssl_renegotiate_check) (SSL *s, int);
508 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
509 unsigned char *buf, size_t len, int peek,
511 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
513 int (*ssl_dispatch_alert) (SSL *s);
514 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
515 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
516 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
517 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
519 size_t (*ssl_pending) (const SSL *s);
520 int (*num_ciphers) (void);
521 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
522 long (*get_timeout) (void);
523 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
524 int (*ssl_version) (void);
525 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
526 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
530 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
531 * consistency, even in the event of OPENSSL_NO_PSK being defined.
533 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512
536 * Lets make this into an ASN.1 type structure as follows
537 * SSL_SESSION_ID ::= SEQUENCE {
538 * version INTEGER, -- structure version number
539 * SSLversion INTEGER, -- SSL version number
540 * Cipher OCTET STRING, -- the 3 byte cipher ID
541 * Session_ID OCTET STRING, -- the Session ID
542 * Master_key OCTET STRING, -- the master key
543 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
544 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
545 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
546 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
547 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
548 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
549 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
550 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
551 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
552 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
553 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
554 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
555 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
556 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
558 * Look in ssl/ssl_asn1.c for more details
559 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
561 struct ssl_session_st {
562 int ssl_version; /* what ssl version session info is being kept
564 size_t master_key_length;
566 /* TLSv1.3 early_secret used for external PSKs */
567 unsigned char early_secret[EVP_MAX_MD_SIZE];
569 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
572 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
573 /* session_id - valid? */
574 size_t session_id_length;
575 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
577 * this is used to determine whether the session is being reused in the
578 * appropriate context. It is up to the application to set this, via
581 size_t sid_ctx_length;
582 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
583 # ifndef OPENSSL_NO_PSK
584 char *psk_identity_hint;
588 * Used to indicate that session resumption is not allowed. Applications
589 * can also set this bit for a new session via not_resumable_session_cb
590 * to disable session caching and tickets.
593 /* This is the cert and type for the other end. */
595 /* Certificate chain peer sent. */
596 STACK_OF(X509) *peer_chain;
598 * when app_verify_callback accepts a session where the peer's
599 * certificate is not ok, we must remember the error for session reuse:
601 long verify_result; /* only for servers */
602 CRYPTO_REF_COUNT references;
605 OSSL_TIME calc_timeout;
606 unsigned int compress_meth; /* Need to lookup the method */
607 const SSL_CIPHER *cipher;
608 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
609 * load the 'cipher' structure */
610 unsigned int kex_group; /* TLS group from key exchange */
611 CRYPTO_EX_DATA ex_data; /* application specific data */
613 * These are used to make removal of session-ids more efficient and to
614 * implement a maximum cache size.
616 struct ssl_session_st *prev, *next;
621 unsigned char *tick; /* Session ticket */
622 size_t ticklen; /* Session ticket length */
623 /* Session lifetime hint in seconds */
624 unsigned long tick_lifetime_hint;
625 uint32_t tick_age_add;
626 /* Max number of bytes that can be sent as early data */
627 uint32_t max_early_data;
628 /* The ALPN protocol selected for this session */
629 unsigned char *alpn_selected;
630 size_t alpn_selected_len;
632 * Maximum Fragment Length as per RFC 4366.
633 * If this value does not contain RFC 4366 allowed values (1-4) then
634 * either the Maximum Fragment Length Negotiation failed or was not
637 uint8_t max_fragment_len_mode;
639 # ifndef OPENSSL_NO_SRP
642 unsigned char *ticket_appdata;
643 size_t ticket_appdata_len;
649 /* Extended master secret support */
650 # define SSL_SESS_FLAG_EXTMS 0x1
652 # ifndef OPENSSL_NO_SRP
654 typedef struct srp_ctx_st {
655 /* param for all the callbacks */
657 /* set client Hello login callback */
658 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
659 /* set SRP N/g param callback for verification */
660 int (*SRP_verify_param_callback) (SSL *, void *);
661 /* set SRP client passwd callback */
662 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
664 BIGNUM *N, *g, *s, *B, *A;
668 unsigned long srp_Mask;
674 SSL_EARLY_DATA_NONE = 0,
675 SSL_EARLY_DATA_CONNECT_RETRY,
676 SSL_EARLY_DATA_CONNECTING,
677 SSL_EARLY_DATA_WRITE_RETRY,
678 SSL_EARLY_DATA_WRITING,
679 SSL_EARLY_DATA_WRITE_FLUSH,
680 SSL_EARLY_DATA_UNAUTH_WRITING,
681 SSL_EARLY_DATA_FINISHED_WRITING,
682 SSL_EARLY_DATA_ACCEPT_RETRY,
683 SSL_EARLY_DATA_ACCEPTING,
684 SSL_EARLY_DATA_READ_RETRY,
685 SSL_EARLY_DATA_READING,
686 SSL_EARLY_DATA_FINISHED_READING
687 } SSL_EARLY_DATA_STATE;
690 * We check that the amount of unreadable early data doesn't exceed
691 * max_early_data. max_early_data is given in plaintext bytes. However if it is
692 * unreadable then we only know the number of ciphertext bytes. We also don't
693 * know how much the overhead should be because it depends on the ciphersuite.
694 * We make a small allowance. We assume 5 records of actual data plus the end
695 * of early data alert record. Each record has a tag and a content type byte.
696 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
697 * content of the alert record either which is 2 bytes.
699 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
702 * The allowance we have between the client's calculated ticket age and our own.
703 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
704 * client's age calculation is different by more than this than our own then we
705 * do not allow that ticket for early_data.
707 # define TICKET_AGE_ALLOWANCE (10 * 1000)
709 #define MAX_COMPRESSIONS_SIZE 255
717 typedef struct raw_extension_st {
718 /* Raw packet data for the extension */
720 /* Set to 1 if the extension is present or 0 otherwise */
722 /* Set to 1 if we have already parsed the extension or 0 otherwise */
724 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
726 /* Track what order extensions are received in (0-based). */
727 size_t received_order;
732 unsigned int legacy_version;
733 unsigned char random[SSL3_RANDOM_SIZE];
734 size_t session_id_len;
735 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
736 size_t dtls_cookie_len;
737 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
739 size_t compressions_len;
740 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
742 size_t pre_proc_exts_len;
743 RAW_EXTENSION *pre_proc_exts;
747 * Extension index values NOTE: Any updates to these defines should be mirrored
748 * with equivalent updates to ext_defs in extensions.c
750 typedef enum tlsext_index_en {
751 TLSEXT_IDX_renegotiate,
752 TLSEXT_IDX_server_name,
753 TLSEXT_IDX_max_fragment_length,
755 TLSEXT_IDX_ec_point_formats,
756 TLSEXT_IDX_supported_groups,
757 TLSEXT_IDX_session_ticket,
758 TLSEXT_IDX_status_request,
759 TLSEXT_IDX_next_proto_neg,
760 TLSEXT_IDX_application_layer_protocol_negotiation,
762 TLSEXT_IDX_encrypt_then_mac,
763 TLSEXT_IDX_signed_certificate_timestamp,
764 TLSEXT_IDX_extended_master_secret,
765 TLSEXT_IDX_signature_algorithms_cert,
766 TLSEXT_IDX_post_handshake_auth,
767 TLSEXT_IDX_signature_algorithms,
768 TLSEXT_IDX_supported_versions,
769 TLSEXT_IDX_psk_kex_modes,
770 TLSEXT_IDX_key_share,
772 TLSEXT_IDX_cryptopro_bug,
773 TLSEXT_IDX_early_data,
774 TLSEXT_IDX_certificate_authorities,
777 /* Dummy index - must always be the last entry */
778 TLSEXT_IDX_num_builtins
781 DEFINE_LHASH_OF_EX(SSL_SESSION);
782 /* Needed in ssl_cert.c */
783 DEFINE_LHASH_OF_EX(X509_NAME);
785 # define TLSEXT_KEYNAME_LENGTH 16
786 # define TLSEXT_TICK_KEY_LENGTH 32
788 typedef struct ssl_ctx_ext_secure_st {
789 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
790 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
791 } SSL_CTX_EXT_SECURE;
794 * Helper function for HMAC
795 * The structure should be considered opaque, it will change once the low
796 * level deprecated calls are removed. At that point it can be replaced
797 * by EVP_MAC_CTX and most of the functions converted to macros or inlined
800 typedef struct ssl_hmac_st {
802 # ifndef OPENSSL_NO_DEPRECATED_3_0
807 SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx);
808 void ssl_hmac_free(SSL_HMAC *ctx);
809 # ifndef OPENSSL_NO_DEPRECATED_3_0
810 HMAC_CTX *ssl_hmac_get0_HMAC_CTX(SSL_HMAC *ctx);
812 EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx);
813 int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
814 int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
815 int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len,
817 size_t ssl_hmac_size(const SSL_HMAC *ctx);
819 int ssl_get_EC_curve_nid(const EVP_PKEY *pkey);
820 __owur int tls13_set_encoded_pub_key(EVP_PKEY *pkey,
821 const unsigned char *enckey,
824 typedef struct tls_group_info_st {
825 char *tlsname; /* Curve Name as in TLS specs */
826 char *realname; /* Curve Name according to provider */
827 char *algorithm; /* Algorithm name to fetch */
828 unsigned int secbits; /* Bits of security (from SP800-57) */
829 uint16_t group_id; /* Group ID */
830 int mintls; /* Minimum TLS version, -1 unsupported */
831 int maxtls; /* Maximum TLS version (or 0 for undefined) */
832 int mindtls; /* Minimum DTLS version, -1 unsupported */
833 int maxdtls; /* Maximum DTLS version (or 0 for undefined) */
834 char is_kem; /* Mode for this Group: 0 is KEX, 1 is KEM */
838 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
839 # define TLS_GROUP_CURVE_PRIME 0x00000001U
840 # define TLS_GROUP_CURVE_CHAR2 0x00000002U
841 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U
842 # define TLS_GROUP_FFDHE 0x00000008U
843 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
845 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
848 OSSL_LIB_CTX *libctx;
850 const SSL_METHOD *method;
851 STACK_OF(SSL_CIPHER) *cipher_list;
852 /* same as above but sorted for lookup */
853 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
854 /* TLSv1.3 specific ciphersuites */
855 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
856 struct x509_store_st /* X509_STORE */ *cert_store;
857 LHASH_OF(SSL_SESSION) *sessions;
859 * Most session-ids that will be cached, default is
860 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
862 size_t session_cache_size;
863 struct ssl_session_st *session_cache_head;
864 struct ssl_session_st *session_cache_tail;
866 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
867 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
868 * means only SSL_accept will cache SSL_SESSIONS.
870 uint32_t session_cache_mode;
872 * If timeout is not 0, it is the default timeout value set when
873 * SSL_new() is called. This has been put in to make life easier to set
876 long session_timeout;
878 * If this callback is not null, it will be called each time a session id
879 * is added to the cache. If this function returns 1, it means that the
880 * callback will do a SSL_SESSION_free() when it has finished using it.
881 * Otherwise, on 0, it means the callback has finished with it. If
882 * remove_session_cb is not null, it will be called when a session-id is
883 * removed from the cache. After the call, OpenSSL will
884 * SSL_SESSION_free() it.
886 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
887 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
888 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
889 const unsigned char *data, int len,
892 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
893 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
894 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
895 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
896 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
897 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
898 TSAN_QUALIFIER int sess_miss; /* session lookup misses */
899 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
900 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
901 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
902 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
903 * the cache was passed back via
904 * the callback. This indicates
905 * that the application is
906 * supplying session-id's from
907 * other processes - spooky
910 #ifdef TSAN_REQUIRES_LOCKING
911 CRYPTO_RWLOCK *tsan_lock;
914 CRYPTO_REF_COUNT references;
916 /* if defined, these override the X509_verify_cert() calls */
917 int (*app_verify_callback) (X509_STORE_CTX *, void *);
918 void *app_verify_arg;
920 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
921 * ('app_verify_callback' was called with just one argument)
924 /* Default password callback. */
925 pem_password_cb *default_passwd_callback;
927 /* Default password callback user data. */
928 void *default_passwd_callback_userdata;
930 /* get client cert callback */
931 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
933 /* cookie generate callback */
934 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
935 unsigned int *cookie_len);
937 /* verify cookie callback */
938 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
939 unsigned int cookie_len);
941 /* TLS1.3 app-controlled cookie generate callback */
942 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
945 /* TLS1.3 verify app-controlled cookie callback */
946 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
949 CRYPTO_EX_DATA ex_data;
951 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
952 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3-sha1' */
954 STACK_OF(X509) *extra_certs;
955 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
957 /* Default values used when no per-SSL value is defined follow */
959 /* used if SSL's info_callback is NULL */
960 void (*info_callback) (const SSL *ssl, int type, int val);
963 * What we put in certificate_authorities extension for TLS 1.3
964 * (ClientHello and CertificateRequest) or just client cert requests for
965 * earlier versions. If client_ca_names is populated then it is only used
966 * for client cert requests, and in preference to ca_names.
968 STACK_OF(X509_NAME) *ca_names;
969 STACK_OF(X509_NAME) *client_ca_names;
972 * Default values to use in SSL structures follow (these are copied by
978 int min_proto_version;
979 int max_proto_version;
980 size_t max_cert_list;
982 struct cert_st /* CERT */ *cert;
985 /* callback that allows applications to peek at protocol messages */
986 void (*msg_callback) (int write_p, int version, int content_type,
987 const void *buf, size_t len, SSL *ssl, void *arg);
988 void *msg_callback_arg;
990 uint32_t verify_mode;
991 size_t sid_ctx_length;
992 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
993 /* called 'verify_callback' in the SSL */
994 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
996 /* Default generate session ID callback. */
997 GEN_SESSION_CB generate_session_id;
999 X509_VERIFY_PARAM *param;
1003 # ifndef OPENSSL_NO_CT
1004 CTLOG_STORE *ctlog_store; /* CT Log Store */
1006 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1007 * If they are not, the connection should be aborted.
1009 ssl_ct_validation_cb ct_validation_callback;
1010 void *ct_validation_callback_arg;
1014 * If we're using more than one pipeline how should we divide the data
1015 * up between the pipes?
1017 size_t split_send_fragment;
1019 * Maximum amount of data to send in one fragment. actual record size can
1020 * be more than this due to padding and MAC overheads.
1022 size_t max_send_fragment;
1024 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1025 size_t max_pipelines;
1027 /* The default read buffer length to use (0 means not set) */
1028 size_t default_read_buf_len;
1030 # ifndef OPENSSL_NO_ENGINE
1032 * Engine to pass requests for client certs to
1034 ENGINE *client_cert_engine;
1037 /* ClientHello callback. Mostly for extensions, but not entirely. */
1038 SSL_client_hello_cb_fn client_hello_cb;
1039 void *client_hello_cb_arg;
1041 /* TLS extensions. */
1043 /* TLS extensions servername callback */
1044 int (*servername_cb) (SSL *, int *, void *);
1045 void *servername_arg;
1046 /* RFC 4507 session ticket keys */
1047 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
1048 SSL_CTX_EXT_SECURE *secure;
1049 # ifndef OPENSSL_NO_DEPRECATED_3_0
1050 /* Callback to support customisation of ticket key setting */
1051 int (*ticket_key_cb) (SSL *ssl,
1052 unsigned char *name, unsigned char *iv,
1053 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
1055 int (*ticket_key_evp_cb) (SSL *ssl,
1056 unsigned char *name, unsigned char *iv,
1057 EVP_CIPHER_CTX *ectx, EVP_MAC_CTX *hctx,
1060 /* certificate status request info */
1061 /* Callback for status request */
1062 int (*status_cb) (SSL *ssl, void *arg);
1064 /* ext status type used for CSR extension (OCSP Stapling) */
1066 /* RFC 4366 Maximum Fragment Length Negotiation */
1067 uint8_t max_fragment_len_mode;
1069 /* EC extension values inherited by SSL structure */
1070 size_t ecpointformats_len;
1071 unsigned char *ecpointformats;
1073 size_t supportedgroups_len;
1074 uint16_t *supportedgroups;
1076 uint16_t *supported_groups_default;
1077 size_t supported_groups_default_len;
1079 * ALPN information (we are in the process of transitioning from NPN to
1084 * For a server, this contains a callback function that allows the
1085 * server to select the protocol for the connection.
1086 * out: on successful return, this must point to the raw protocol
1087 * name (without the length prefix).
1088 * outlen: on successful return, this contains the length of |*out|.
1089 * in: points to the client's list of supported protocols in
1091 * inlen: the length of |in|.
1093 int (*alpn_select_cb) (SSL *s,
1094 const unsigned char **out,
1095 unsigned char *outlen,
1096 const unsigned char *in,
1097 unsigned int inlen, void *arg);
1098 void *alpn_select_cb_arg;
1101 * For a client, this contains the list of supported protocols in wire
1104 unsigned char *alpn;
1107 # ifndef OPENSSL_NO_NEXTPROTONEG
1108 /* Next protocol negotiation information */
1111 * For a server, this contains a callback function by which the set of
1112 * advertised protocols can be provided.
1114 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
1115 void *npn_advertised_cb_arg;
1117 * For a client, this contains a callback function that selects the next
1118 * protocol from the list provided by the server.
1120 SSL_CTX_npn_select_cb_func npn_select_cb;
1121 void *npn_select_cb_arg;
1124 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
1127 # ifndef OPENSSL_NO_PSK
1128 SSL_psk_client_cb_func psk_client_callback;
1129 SSL_psk_server_cb_func psk_server_callback;
1131 SSL_psk_find_session_cb_func psk_find_session_cb;
1132 SSL_psk_use_session_cb_func psk_use_session_cb;
1134 # ifndef OPENSSL_NO_SRP
1135 SRP_CTX srp_ctx; /* ctx for SRP authentication */
1138 /* Shared DANE context */
1139 struct dane_ctx_st dane;
1141 # ifndef OPENSSL_NO_SRTP
1142 /* SRTP profiles we are willing to do from RFC 5764 */
1143 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1146 * Callback for disabling session caching and ticket support on a session
1147 * basis, depending on the chosen cipher.
1149 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1151 CRYPTO_RWLOCK *lock;
1154 * Callback for logging key material for use with debugging tools like
1155 * Wireshark. The callback should log `line` followed by a newline.
1157 SSL_CTX_keylog_cb_func keylog_callback;
1160 * The maximum number of bytes advertised in session tickets that can be
1161 * sent as early data.
1163 uint32_t max_early_data;
1166 * The maximum number of bytes of early data that a server will tolerate
1167 * (which should be at least as much as max_early_data).
1169 uint32_t recv_max_early_data;
1171 /* TLS1.3 padding callback */
1172 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1173 void *record_padding_arg;
1174 size_t block_padding;
1176 /* Session ticket appdata */
1177 SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
1178 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
1179 void *ticket_cb_data;
1181 /* The number of TLS1.3 tickets to automatically send */
1184 /* Callback to determine if early_data is acceptable or not */
1185 SSL_allow_early_data_cb_fn allow_early_data_cb;
1186 void *allow_early_data_cb_data;
1188 /* Do we advertise Post-handshake auth support? */
1191 /* Callback for SSL async handling */
1192 SSL_async_callback_fn async_cb;
1197 int ssl_mac_pkey_id[SSL_MD_NUM_IDX];
1198 const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX];
1199 const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX];
1200 size_t ssl_mac_secret_size[SSL_MD_NUM_IDX];
1202 /* Cache of all sigalgs we know and whether they are available or not */
1203 struct sigalg_lookup_st *sigalg_lookup_cache;
1205 TLS_GROUP_INFO *group_list;
1206 size_t group_list_len;
1207 size_t group_list_max_len;
1209 /* masks of disabled algorithms */
1210 uint32_t disabled_enc_mask;
1211 uint32_t disabled_mac_mask;
1212 uint32_t disabled_mkey_mask;
1213 uint32_t disabled_auth_mask;
1216 typedef struct cert_pkey_st CERT_PKEY;
1218 #define SSL_TYPE_SSL_CONNECTION 0
1219 #define SSL_TYPE_QUIC_CONNECTION 1
1220 #define SSL_TYPE_QUIC_STREAM 2
1225 const SSL_METHOD *method;
1226 CRYPTO_REF_COUNT references;
1227 CRYPTO_RWLOCK *lock;
1228 /* extra application data */
1229 CRYPTO_EX_DATA ex_data;
1232 struct ssl_connection_st {
1233 /* type identifier and common data */
1235 #ifndef OPENSSL_NO_QUIC
1236 /* pointer to parent SSL of QUIC_CONNECTION or self */
1237 struct ssl_st *user_ssl;
1240 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1245 * There are 2 BIO's even though they are normally both the same. This
1246 * is so data can be read and written to different handlers
1248 /* used by SSL_read */
1250 /* used by SSL_write */
1252 /* used during session-id reuse to concatenate messages */
1255 * This holds a variable that indicates what we were doing when a 0 or -1
1256 * is returned. This is needed for non-blocking IO so we know what
1257 * request needs re-doing when in SSL_accept or SSL_connect
1260 int (*handshake_func) (SSL *);
1262 * Imagine that here's a boolean member "init" that is switched as soon
1263 * as SSL_set_{accept/connect}_state is called for the first time, so
1264 * that "state" and "handshake_func" are properly initialized. But as
1265 * handshake_func is == 0 until then, we use this test instead of an
1268 /* are we the server side? */
1271 * Generate a new session or reuse an old one.
1272 * NB: For servers, the 'new' session may actually be a previously
1273 * cached session or even the previous session unless
1274 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1277 /* don't send shutdown packets */
1279 /* we have shut things down, 0x01 sent, 0x02 for received */
1283 SSL_EARLY_DATA_STATE early_data_state;
1284 BUF_MEM *init_buf; /* buffer used during init */
1285 void *init_msg; /* pointer to handshake message body, set by
1286 * ssl3_get_message() */
1287 size_t init_num; /* amount read/written */
1288 size_t init_off; /* amount read/written */
1292 size_t read_mac_secret_size;
1293 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1294 size_t write_mac_secret_size;
1295 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1296 unsigned char server_random[SSL3_RANDOM_SIZE];
1297 unsigned char client_random[SSL3_RANDOM_SIZE];
1298 /* flags for countermeasure against known-IV weakness */
1299 int need_empty_fragments;
1300 int empty_fragment_done;
1301 /* used during startup, digest all incoming/outgoing packets */
1302 BIO *handshake_buffer;
1304 * When handshake digest is determined, buffer is hashed and
1305 * freed and MD_CTX for the required digest is stored here.
1307 EVP_MD_CTX *handshake_dgst;
1309 * Set whenever an expected ChangeCipherSpec message is processed.
1310 * Unset when the peer's Finished message is received.
1311 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1313 int change_cipher_spec;
1317 * we allow one fatal and one warning alert to be outstanding, send close
1318 * alert via the warning alert
1321 unsigned char send_alert[2];
1323 * This flag is set when we should renegotiate ASAP, basically when there
1324 * is no more data in the read or write buffers
1327 int total_renegotiations;
1328 int num_renegotiations;
1329 int in_read_app_data;
1331 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1332 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1333 size_t finish_md_len;
1334 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1335 size_t peer_finish_md_len;
1336 size_t message_size;
1338 /* used to hold the new cipher we are going to use */
1339 const SSL_CIPHER *new_cipher;
1340 EVP_PKEY *pkey; /* holds short lived key exchange key */
1341 /* used for certificate requests */
1343 /* Certificate types in certificate request message. */
1346 /* Certificate authorities list peer sent */
1347 STACK_OF(X509_NAME) *peer_ca_names;
1348 size_t key_block_length;
1349 unsigned char *key_block;
1350 const EVP_CIPHER *new_sym_enc;
1351 const EVP_MD *new_hash;
1352 int new_mac_pkey_type;
1353 size_t new_mac_secret_size;
1354 # ifndef OPENSSL_NO_COMP
1355 const SSL_COMP *new_compression;
1357 char *new_compression;
1360 /* Raw values of the cipher list from a client */
1361 unsigned char *ciphers_raw;
1362 size_t ciphers_rawlen;
1363 /* Temporary storage for premaster secret */
1366 # ifndef OPENSSL_NO_PSK
1367 /* Temporary storage for PSK key */
1371 /* Signature algorithm we actually use */
1372 const struct sigalg_lookup_st *sigalg;
1373 /* Pointer to certificate we use */
1376 * signature algorithms peer reports: e.g. supported signature
1377 * algorithms extension for server or as part of a certificate
1378 * request for client.
1379 * Keep track of the algorithms for TLS and X.509 usage separately.
1381 uint16_t *peer_sigalgs;
1382 uint16_t *peer_cert_sigalgs;
1383 /* Size of above arrays */
1384 size_t peer_sigalgslen;
1385 size_t peer_cert_sigalgslen;
1386 /* Sigalg peer actually uses */
1387 const struct sigalg_lookup_st *peer_sigalg;
1389 * Set if corresponding CERT_PKEY can be used with current
1390 * SSL session: e.g. appropriate curve, signature algorithms etc.
1391 * If zero it can't be used at all.
1393 uint32_t valid_flags[SSL_PKEY_NUM];
1395 * For servers the following masks are for the key and auth algorithms
1396 * that are supported by the certs below. For clients they are masks of
1397 * *disabled* algorithms based on the current session.
1402 * The following are used by the client to see if a cipher is allowed or
1403 * not. It contains the minimum and maximum version the client's using
1404 * based on what it knows so far.
1410 /* Connection binding to prevent renegotiation attacks */
1411 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1412 size_t previous_client_finished_len;
1413 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1414 size_t previous_server_finished_len;
1415 int send_connection_binding;
1417 # ifndef OPENSSL_NO_NEXTPROTONEG
1419 * Set if we saw the Next Protocol Negotiation extension from our peer.
1425 * ALPN information (we are in the process of transitioning from NPN to
1430 * In a server these point to the selected ALPN protocol after the
1431 * ClientHello has been processed. In a client these contain the protocol
1432 * that the server selected once the ServerHello has been processed.
1434 unsigned char *alpn_selected;
1435 size_t alpn_selected_len;
1436 /* used by the server to know what options were proposed */
1437 unsigned char *alpn_proposed;
1438 size_t alpn_proposed_len;
1439 /* used by the client to know if it actually sent alpn */
1443 * This is set to true if we believe that this is a version of Safari
1444 * running on OS X 10.6 or newer. We wish to know this because Safari on
1445 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1447 char is_probably_safari;
1450 * Track whether we did a key exchange this handshake or not, so
1451 * SSL_get_negotiated_group() knows whether to fall back to the
1452 * value in the SSL_SESSION.
1455 /* For clients: peer temporary key */
1456 /* The group_id for the key exchange key */
1462 struct dtls1_state_st *d1; /* DTLSv1 variables */
1463 /* callback that allows applications to peek at protocol messages */
1464 void (*msg_callback) (int write_p, int version, int content_type,
1465 const void *buf, size_t len, SSL *ssl, void *arg);
1466 void *msg_callback_arg;
1467 int hit; /* reusing a previous session */
1468 X509_VERIFY_PARAM *param;
1469 /* Per connection DANE state */
1472 STACK_OF(SSL_CIPHER) *peer_ciphers;
1473 STACK_OF(SSL_CIPHER) *cipher_list;
1474 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1475 /* TLSv1.3 specific ciphersuites */
1476 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
1478 * These are the ones being used, the ones in SSL_SESSION are the ones to
1479 * be 'copied' into these ones
1483 * The TLS1.3 secrets.
1485 unsigned char early_secret[EVP_MAX_MD_SIZE];
1486 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1487 unsigned char master_secret[EVP_MAX_MD_SIZE];
1488 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
1489 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1490 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1491 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1492 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1493 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1494 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1495 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1496 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
1497 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1498 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
1499 EVP_MD_CTX *read_hash; /* used for mac generation */
1500 COMP_CTX *compress; /* compression */
1501 COMP_CTX *expand; /* uncompress */
1502 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1503 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
1504 EVP_MD_CTX *write_hash; /* used for mac generation */
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
1706 * Parsed form of the ClientHello, kept around across client_hello_cb
1709 CLIENTHELLO_MSG *clienthello;
1712 * no further mod of servername
1713 * 0 : call the servername extension callback.
1714 * 1 : prepare 2, allow last ack just after in server callback.
1715 * 2 : don't call servername callback, no ack in server hello
1717 int servername_done;
1718 # ifndef OPENSSL_NO_CT
1720 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1721 * If they are not, the connection should be aborted.
1723 ssl_ct_validation_cb ct_validation_callback;
1724 /* User-supplied argument that is passed to the ct_validation_callback */
1725 void *ct_validation_callback_arg;
1727 * Consolidated stack of SCTs from all sources.
1728 * Lazily populated by CT_get_peer_scts(SSL*)
1730 STACK_OF(SCT) *scts;
1731 /* Have we attempted to find/parse SCTs yet? */
1734 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1735 # ifndef OPENSSL_NO_SRTP
1737 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1738 /* What's been chosen */
1739 SRTP_PROTECTION_PROFILE *srtp_profile;
1742 * 1 if we are renegotiating.
1743 * 2 if we are a server and are inside a handshake
1744 * (i.e. not just sending a HelloRequest)
1747 /* If sending a KeyUpdate is pending */
1749 /* Post-handshake authentication state */
1750 SSL_PHA_STATE post_handshake_auth;
1752 uint8_t* pha_context;
1753 size_t pha_context_len;
1755 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
1757 # ifndef OPENSSL_NO_SRP
1758 /* ctx for SRP authentication */
1762 * Callback for disabling session caching and ticket support on a session
1763 * basis, depending on the chosen cipher.
1765 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1767 /* Old RECORD_LAYER structure - to be removed eventually */
1768 RECORD_LAYER rlayer;
1770 /* New read direciton OSSL_RECORD_LAYER - to replace rlayer above */
1771 const OSSL_RECORD_METHOD *rrlmethod;
1772 /* The read direction record layer */
1773 OSSL_RECORD_LAYER *rrl;
1776 /* Default password callback. */
1777 pem_password_cb *default_passwd_callback;
1778 /* Default password callback user data. */
1779 void *default_passwd_callback_userdata;
1780 /* Async Job info */
1782 ASYNC_WAIT_CTX *waitctx;
1786 * The maximum number of bytes advertised in session tickets that can be
1787 * sent as early data.
1789 uint32_t max_early_data;
1791 * The maximum number of bytes of early data that a server will tolerate
1792 * (which should be at least as much as max_early_data).
1794 uint32_t recv_max_early_data;
1797 * The number of bytes of early data received so far. If we accepted early
1798 * data then this is a count of the plaintext bytes. If we rejected it then
1799 * this is a count of the ciphertext bytes.
1801 uint32_t early_data_count;
1803 /* TLS1.3 padding callback */
1804 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1805 void *record_padding_arg;
1806 size_t block_padding;
1808 /* The number of TLS1.3 tickets to automatically send */
1810 /* The number of TLS1.3 tickets actually sent so far */
1811 size_t sent_tickets;
1812 /* The next nonce value to use when we send a ticket on this connection */
1813 uint64_t next_ticket_nonce;
1815 /* Callback to determine if early_data is acceptable or not */
1816 SSL_allow_early_data_cb_fn allow_early_data_cb;
1817 void *allow_early_data_cb_data;
1819 /* Callback for SSL async handling */
1820 SSL_async_callback_fn async_cb;
1824 * Signature algorithms shared by client and server: cached because these
1825 * are used most often.
1827 const struct sigalg_lookup_st **shared_sigalgs;
1828 size_t shared_sigalgslen;
1831 # define SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, c) \
1832 ((ssl) == NULL ? NULL \
1833 : ((ssl)->type == SSL_TYPE_SSL_CONNECTION \
1834 ? (c SSL_CONNECTION *)(ssl) \
1836 # define SSL_CONNECTION_NO_CONST
1837 # define SSL_CONNECTION_FROM_SSL_ONLY(ssl) \
1838 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, SSL_CONNECTION_NO_CONST)
1839 # define SSL_CONNECTION_FROM_CONST_SSL_ONLY(ssl) \
1840 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, const)
1841 # define SSL_CONNECTION_GET_CTX(sc) ((sc)->ssl.ctx)
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)
1855 # define SSL_CONNECTION_GET_SSL(sc) ((sc)->user_ssl)
1857 # define SSL_CONNECTION_FROM_SSL(ssl) \
1858 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, SSL_CONNECTION_NO_CONST)
1859 # define SSL_CONNECTION_FROM_CONST_SSL(ssl) \
1860 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, const)
1861 # define SSL_CONNECTION_GET_SSL(sc) (&(sc)->ssl)
1865 * Structure containing table entry of values associated with the signature
1866 * algorithms (signature scheme) extension
1868 typedef struct sigalg_lookup_st {
1869 /* TLS 1.3 signature scheme name */
1871 /* Raw value used in extension */
1873 /* NID of hash algorithm or NID_undef if no hash */
1875 /* Index of hash algorithm or -1 if no hash algorithm */
1877 /* NID of signature algorithm */
1879 /* Index of signature algorithm */
1881 /* Combined hash and signature NID, if any */
1883 /* Required public key curve (ECDSA only) */
1885 /* Whether this signature algorithm is actually available for use */
1890 * Structure containing table entry of certificate info corresponding to
1894 int nid; /* NID of public key algorithm */
1895 uint32_t amask; /* authmask corresponding to key type */
1898 /* DTLS structures */
1900 # ifndef OPENSSL_NO_SCTP
1901 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1904 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1905 # define DTLS1_MAX_MTU_OVERHEAD 48
1908 * Flag used in message reuse to indicate the buffer contains the record
1909 * header as well as the handshake message header.
1911 # define DTLS1_SKIP_RECORD_HEADER 2
1913 struct dtls1_retransmit_state {
1914 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1915 EVP_MD_CTX *write_hash; /* used for mac generation */
1916 COMP_CTX *compress; /* compression */
1917 SSL_SESSION *session;
1918 unsigned short epoch;
1921 struct hm_header_st {
1927 unsigned int is_ccs;
1928 struct dtls1_retransmit_state saved_retransmit_state;
1931 typedef struct hm_fragment_st {
1932 struct hm_header_st msg_header;
1933 unsigned char *fragment;
1934 unsigned char *reassembly;
1937 typedef struct pqueue_st pqueue;
1938 typedef struct pitem_st pitem;
1941 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1946 typedef struct pitem_st *piterator;
1948 pitem *pitem_new(unsigned char *prio64be, void *data);
1949 void pitem_free(pitem *item);
1950 pqueue *pqueue_new(void);
1951 void pqueue_free(pqueue *pq);
1952 pitem *pqueue_insert(pqueue *pq, pitem *item);
1953 pitem *pqueue_peek(pqueue *pq);
1954 pitem *pqueue_pop(pqueue *pq);
1955 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1956 pitem *pqueue_iterator(pqueue *pq);
1957 pitem *pqueue_next(piterator *iter);
1958 size_t pqueue_size(pqueue *pq);
1960 typedef struct dtls1_state_st {
1961 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1963 unsigned int cookie_verified;
1964 /* handshake message numbers */
1965 unsigned short handshake_write_seq;
1966 unsigned short next_handshake_write_seq;
1967 unsigned short handshake_read_seq;
1968 /* Buffered handshake messages */
1969 pqueue *buffered_messages;
1970 /* Buffered (sent) handshake records */
1971 pqueue *sent_messages;
1972 size_t link_mtu; /* max on-the-wire DTLS packet size */
1973 size_t mtu; /* max DTLS packet size */
1974 struct hm_header_st w_msg_hdr;
1975 struct hm_header_st r_msg_hdr;
1976 /* Number of alerts received so far */
1977 unsigned int timeout_num_alerts;
1979 * Indicates when the last handshake msg sent will timeout
1981 struct timeval next_timeout;
1982 /* Timeout duration */
1983 unsigned int timeout_duration_us;
1985 unsigned int retransmitting;
1986 # ifndef OPENSSL_NO_SCTP
1987 int shutdown_received;
1990 DTLS_timer_cb timer_cb;
1995 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1997 # define EXPLICIT_PRIME_CURVE_TYPE 1
1998 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1999 # define NAMED_CURVE_TYPE 3
2001 struct cert_pkey_st {
2003 EVP_PKEY *privatekey;
2004 /* Chain for this certificate */
2005 STACK_OF(X509) *chain;
2007 * serverinfo data for this certificate. The data is in TLS Extension
2008 * wire format, specifically it's a series of records like:
2009 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
2011 * uint8_t data[length];
2013 unsigned char *serverinfo;
2014 size_t serverinfo_length;
2016 /* Retrieve Suite B flags */
2017 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
2018 /* Uses to check strict mode: suite B modes are always strict */
2019 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
2020 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
2023 ENDPOINT_CLIENT = 0,
2030 unsigned short ext_type;
2032 /* The context which this extension applies to */
2033 unsigned int context;
2035 * Per-connection flags relating to this extension type: not used if
2036 * part of an SSL_CTX structure.
2039 SSL_custom_ext_add_cb_ex add_cb;
2040 SSL_custom_ext_free_cb_ex free_cb;
2042 SSL_custom_ext_parse_cb_ex parse_cb;
2044 } custom_ext_method;
2046 /* ext_flags values */
2049 * Indicates an extension has been received. Used to check for unsolicited or
2050 * duplicate extensions.
2052 # define SSL_EXT_FLAG_RECEIVED 0x1
2054 * Indicates an extension has been sent: used to enable sending of
2055 * corresponding ServerHello extension.
2057 # define SSL_EXT_FLAG_SENT 0x2
2060 custom_ext_method *meths;
2062 } custom_ext_methods;
2064 typedef struct cert_st {
2065 /* Current active set */
2067 * ALWAYS points to an element of the pkeys array
2068 * Probably it would make more sense to store
2069 * an index, not a pointer.
2074 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
2076 /* Flags related to certificates */
2077 uint32_t cert_flags;
2078 CERT_PKEY pkeys[SSL_PKEY_NUM];
2079 /* Custom certificate types sent in certificate request message. */
2083 * supported signature algorithms. When set on a client this is sent in
2084 * the client hello as the supported signature algorithms extension. For
2085 * servers it represents the signature algorithms we are willing to use.
2087 uint16_t *conf_sigalgs;
2088 /* Size of above array */
2089 size_t conf_sigalgslen;
2091 * Client authentication signature algorithms, if not set then uses
2092 * conf_sigalgs. On servers these will be the signature algorithms sent
2093 * to the client in a certificate request for TLS 1.2. On a client this
2094 * represents the signature algorithms we are willing to use for client
2097 uint16_t *client_sigalgs;
2098 /* Size of above array */
2099 size_t client_sigalgslen;
2101 * Certificate setup callback: if set is called whenever a certificate
2102 * may be required (client or server). the callback can then examine any
2103 * appropriate parameters and setup any certificates required. This
2104 * allows advanced applications to select certificates on the fly: for
2105 * example based on supported signature algorithms or curves.
2107 int (*cert_cb) (SSL *ssl, void *arg);
2110 * Optional X509_STORE for chain building or certificate validation If
2111 * NULL the parent SSL_CTX store is used instead.
2113 X509_STORE *chain_store;
2114 X509_STORE *verify_store;
2115 /* Custom extensions */
2116 custom_ext_methods custext;
2117 /* Security callback */
2118 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
2119 void *other, void *ex);
2120 /* Security level */
2123 # ifndef OPENSSL_NO_PSK
2124 /* If not NULL psk identity hint to use for servers */
2125 char *psk_identity_hint;
2127 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
2128 CRYPTO_RWLOCK *lock;
2131 # define FP_ICC (int (*)(const void *,const void *))
2134 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
2135 * of a mess of functions, but hell, think of it as an opaque structure :-)
2137 typedef struct ssl3_enc_method {
2138 int (*enc) (SSL_CONNECTION *, SSL3_RECORD *, size_t, int,
2139 SSL_MAC_BUF *, size_t);
2140 int (*mac) (SSL_CONNECTION *, SSL3_RECORD *, unsigned char *, int);
2141 int (*setup_key_block) (SSL_CONNECTION *);
2142 int (*generate_master_secret) (SSL_CONNECTION *, unsigned char *,
2143 unsigned char *, size_t, size_t *);
2144 int (*change_cipher_state) (SSL_CONNECTION *, int);
2145 size_t (*final_finish_mac) (SSL_CONNECTION *, const char *, size_t,
2147 const char *client_finished_label;
2148 size_t client_finished_label_len;
2149 const char *server_finished_label;
2150 size_t server_finished_label_len;
2151 int (*alert_value) (int);
2152 int (*export_keying_material) (SSL_CONNECTION *, unsigned char *, size_t,
2153 const char *, size_t,
2154 const unsigned char *, size_t,
2156 /* Various flags indicating protocol version requirements */
2158 /* Set the handshake header */
2159 int (*set_handshake_header) (SSL_CONNECTION *s, WPACKET *pkt, int type);
2160 /* Close construction of the handshake message */
2161 int (*close_construct_packet) (SSL_CONNECTION *s, WPACKET *pkt, int htype);
2162 /* Write out handshake message */
2163 int (*do_write) (SSL_CONNECTION *s);
2166 # define ssl_set_handshake_header(s, pkt, htype) \
2167 SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
2168 # define ssl_close_construct_packet(s, pkt, htype) \
2169 SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
2170 # define ssl_do_write(s) SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->do_write(s)
2172 /* Values for enc_flags */
2174 /* Uses explicit IV for CBC mode */
2175 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
2176 /* Uses signature algorithms extension */
2177 # define SSL_ENC_FLAG_SIGALGS 0x2
2178 /* Uses SHA256 default PRF */
2179 # define SSL_ENC_FLAG_SHA256_PRF 0x4
2181 # define SSL_ENC_FLAG_DTLS 0x8
2183 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
2184 * apply to others in future.
2186 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2188 # ifndef OPENSSL_NO_COMP
2189 /* Used for holding the relevant compression methods loaded into SSL_CTX */
2190 typedef struct ssl3_comp_st {
2191 int comp_id; /* The identifier byte for this compression
2193 char *name; /* Text name used for the compression type */
2194 COMP_METHOD *method; /* The method :-) */
2198 typedef enum downgrade_en {
2205 * Dummy status type for the status_type extension. Indicates no status type
2208 #define TLSEXT_STATUSTYPE_nothing -1
2210 /* Sigalgs values */
2211 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2212 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2213 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2214 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2215 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2216 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2217 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2218 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2219 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2220 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2221 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2222 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2223 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2224 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2225 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2226 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2227 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2228 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2229 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2230 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2231 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2232 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840
2233 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841
2234 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2235 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2236 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2238 #define TLSEXT_SIGALG_ed25519 0x0807
2239 #define TLSEXT_SIGALG_ed448 0x0808
2240 #define TLSEXT_SIGALG_ecdsa_brainpoolP256r1_sha256 0x081a
2241 #define TLSEXT_SIGALG_ecdsa_brainpoolP384r1_sha384 0x081b
2242 #define TLSEXT_SIGALG_ecdsa_brainpoolP512r1_sha512 0x081c
2244 /* Known PSK key exchange modes */
2245 #define TLSEXT_KEX_MODE_KE 0x00
2246 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2249 * Internal representations of key exchange modes
2251 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2252 #define TLSEXT_KEX_MODE_FLAG_KE 1
2253 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2255 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
2256 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2258 /* A dummy signature value not valid for TLSv1.2 signature algs */
2259 #define TLSEXT_signature_rsa_pss 0x0101
2261 /* TLSv1.3 downgrade protection sentinel values */
2262 extern const unsigned char tls11downgrade[8];
2263 extern const unsigned char tls12downgrade[8];
2265 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
2267 __owur const SSL_METHOD *ssl_bad_method(int ver);
2268 __owur const SSL_METHOD *sslv3_method(void);
2269 __owur const SSL_METHOD *sslv3_server_method(void);
2270 __owur const SSL_METHOD *sslv3_client_method(void);
2271 __owur const SSL_METHOD *tlsv1_method(void);
2272 __owur const SSL_METHOD *tlsv1_server_method(void);
2273 __owur const SSL_METHOD *tlsv1_client_method(void);
2274 __owur const SSL_METHOD *tlsv1_1_method(void);
2275 __owur const SSL_METHOD *tlsv1_1_server_method(void);
2276 __owur const SSL_METHOD *tlsv1_1_client_method(void);
2277 __owur const SSL_METHOD *tlsv1_2_method(void);
2278 __owur const SSL_METHOD *tlsv1_2_server_method(void);
2279 __owur const SSL_METHOD *tlsv1_2_client_method(void);
2280 __owur const SSL_METHOD *tlsv1_3_method(void);
2281 __owur const SSL_METHOD *tlsv1_3_server_method(void);
2282 __owur const SSL_METHOD *tlsv1_3_client_method(void);
2283 __owur const SSL_METHOD *dtlsv1_method(void);
2284 __owur const SSL_METHOD *dtlsv1_server_method(void);
2285 __owur const SSL_METHOD *dtlsv1_client_method(void);
2286 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
2287 __owur const SSL_METHOD *dtlsv1_2_method(void);
2288 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
2289 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
2291 extern const SSL3_ENC_METHOD TLSv1_enc_data;
2292 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
2293 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
2294 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
2295 extern const SSL3_ENC_METHOD SSLv3_enc_data;
2296 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
2297 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
2300 * Flags for SSL methods
2302 # define SSL_METHOD_NO_FIPS (1U<<0)
2303 # define SSL_METHOD_NO_SUITEB (1U<<1)
2305 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2306 s_connect, enc_data) \
2307 const SSL_METHOD *func_name(void) \
2309 static const SSL_METHOD func_name##_data= { \
2313 ossl_ssl_connection_new, \
2314 ossl_ssl_connection_free, \
2315 ossl_ssl_connection_reset, \
2326 ssl3_renegotiate_check, \
2329 ssl3_dispatch_alert, \
2332 ssl3_get_cipher_by_char, \
2333 ssl3_put_cipher_by_char, \
2337 tls1_default_timeout, \
2339 ssl_undefined_void_function, \
2340 ssl3_callback_ctrl, \
2341 ssl3_ctx_callback_ctrl, \
2343 return &func_name##_data; \
2346 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2347 const SSL_METHOD *func_name(void) \
2349 static const SSL_METHOD func_name##_data= { \
2351 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2353 ossl_ssl_connection_new, \
2354 ossl_ssl_connection_free, \
2355 ossl_ssl_connection_reset, \
2366 ssl3_renegotiate_check, \
2369 ssl3_dispatch_alert, \
2372 ssl3_get_cipher_by_char, \
2373 ssl3_put_cipher_by_char, \
2377 ssl3_default_timeout, \
2379 ssl_undefined_void_function, \
2380 ssl3_callback_ctrl, \
2381 ssl3_ctx_callback_ctrl, \
2383 return &func_name##_data; \
2386 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2387 s_connect, enc_data) \
2388 const SSL_METHOD *func_name(void) \
2390 static const SSL_METHOD func_name##_data= { \
2394 ossl_ssl_connection_new, \
2395 ossl_ssl_connection_free, \
2396 ossl_ssl_connection_reset, \
2407 ssl3_renegotiate_check, \
2409 dtls1_write_app_data_bytes, \
2410 dtls1_dispatch_alert, \
2413 ssl3_get_cipher_by_char, \
2414 ssl3_put_cipher_by_char, \
2418 dtls1_default_timeout, \
2420 ssl_undefined_void_function, \
2421 ssl3_callback_ctrl, \
2422 ssl3_ctx_callback_ctrl, \
2424 return &func_name##_data; \
2427 struct openssl_ssl_test_functions {
2428 int (*p_ssl_init_wbio_buffer) (SSL_CONNECTION *s);
2429 int (*p_ssl3_setup_buffers) (SSL_CONNECTION *s);
2432 const char *ssl_protocol_to_string(int version);
2434 /* Returns true if certificate and private key for 'idx' are present */
2435 static ossl_inline int ssl_has_cert(const SSL_CONNECTION *s, int idx)
2437 if (idx < 0 || idx >= SSL_PKEY_NUM)
2439 return s->cert->pkeys[idx].x509 != NULL
2440 && s->cert->pkeys[idx].privatekey != NULL;
2443 static ossl_inline void tls1_get_peer_groups(SSL_CONNECTION *s,
2444 const uint16_t **pgroups,
2447 *pgroups = s->ext.peer_supportedgroups;
2448 *pgroupslen = s->ext.peer_supportedgroups_len;
2451 # ifndef OPENSSL_UNIT_TEST
2453 __owur int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type);
2454 __owur SSL *ossl_ssl_connection_new(SSL_CTX *ctx);
2455 void ossl_ssl_connection_free(SSL *ssl);
2456 __owur int ossl_ssl_connection_reset(SSL *ssl);
2458 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2459 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2460 void ssl_clear_cipher_ctx(SSL_CONNECTION *s);
2461 int ssl_clear_bad_session(SSL_CONNECTION *s);
2462 __owur CERT *ssl_cert_new(void);
2463 __owur CERT *ssl_cert_dup(CERT *cert);
2464 void ssl_cert_clear_certs(CERT *c);
2465 void ssl_cert_free(CERT *c);
2466 __owur int ssl_generate_session_id(SSL_CONNECTION *s, SSL_SESSION *ss);
2467 __owur int ssl_get_new_session(SSL_CONNECTION *s, int session);
2468 __owur SSL_SESSION *lookup_sess_in_cache(SSL_CONNECTION *s,
2469 const unsigned char *sess_id,
2470 size_t sess_id_len);
2471 __owur int ssl_get_prev_session(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello);
2472 __owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket);
2473 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2474 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2475 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2476 const SSL_CIPHER *const *bp);
2477 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
2478 STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
2479 STACK_OF(SSL_CIPHER) **cipher_list,
2480 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
2481 const char *rule_str,
2483 __owur int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites,
2485 __owur int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
2486 STACK_OF(SSL_CIPHER) **skp,
2487 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2489 void ssl_update_cache(SSL_CONNECTION *s, int mode);
2490 __owur int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc,
2491 const EVP_CIPHER **enc);
2492 __owur int ssl_cipher_get_evp(SSL_CTX *ctxc, const SSL_SESSION *s,
2493 const EVP_CIPHER **enc, const EVP_MD **md,
2494 int *mac_pkey_type, size_t *mac_secret_size,
2495 SSL_COMP **comp, int use_etm);
2496 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2497 size_t *int_overhead, size_t *blocksize,
2498 size_t *ext_overhead);
2499 __owur int ssl_cert_is_disabled(SSL_CTX *ctx, size_t idx);
2500 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL_CONNECTION *ssl,
2501 const unsigned char *ptr,
2503 __owur int ssl_cert_set0_chain(SSL_CONNECTION *s, SSL_CTX *ctx,
2504 STACK_OF(X509) *chain);
2505 __owur int ssl_cert_set1_chain(SSL_CONNECTION *s, SSL_CTX *ctx,
2506 STACK_OF(X509) *chain);
2507 __owur int ssl_cert_add0_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x);
2508 __owur int ssl_cert_add1_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x);
2509 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2510 __owur int ssl_cert_set_current(CERT *c, long arg);
2511 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2513 __owur int ssl_verify_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk);
2514 __owur int ssl_build_cert_chain(SSL_CONNECTION *s, SSL_CTX *ctx, int flags);
2515 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2517 __owur int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain);
2519 __owur int ssl_security(const SSL_CONNECTION *s, int op, int bits, int nid,
2521 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2523 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp);
2525 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx);
2526 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2528 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
2530 int ssl_undefined_function(SSL *s);
2531 __owur int ssl_undefined_void_function(void);
2532 __owur int ssl_undefined_const_function(const SSL *s);
2533 __owur int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
2534 const unsigned char **serverinfo,
2535 size_t *serverinfo_length);
2536 void ssl_set_masks(SSL_CONNECTION *s);
2537 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *sc);
2538 __owur int ssl_x509err2alert(int type);
2539 void ssl_sort_cipher_list(void);
2540 int ssl_load_ciphers(SSL_CTX *ctx);
2541 __owur int ssl_setup_sig_algs(SSL_CTX *ctx);
2542 int ssl_load_groups(SSL_CTX *ctx);
2543 __owur int ssl_fill_hello_random(SSL_CONNECTION *s, int server,
2544 unsigned char *field, size_t len,
2546 __owur int ssl_generate_master_secret(SSL_CONNECTION *s, unsigned char *pms,
2547 size_t pmslen, int free_pms);
2548 __owur EVP_PKEY *ssl_generate_pkey(SSL_CONNECTION *s, EVP_PKEY *pm);
2549 __owur int ssl_gensecret(SSL_CONNECTION *s, unsigned char *pms, size_t pmslen);
2550 __owur int ssl_derive(SSL_CONNECTION *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2552 __owur int ssl_decapsulate(SSL_CONNECTION *s, EVP_PKEY *privkey,
2553 const unsigned char *ct, size_t ctlen,
2555 __owur int ssl_encapsulate(SSL_CONNECTION *s, EVP_PKEY *pubkey,
2556 unsigned char **ctp, size_t *ctlenp,
2558 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2559 __owur int ssl_set_tmp_ecdh_groups(uint16_t **pext, size_t *pextlen,
2561 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc);
2562 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc);
2564 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2565 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2566 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2567 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2569 int ssl3_init_finished_mac(SSL_CONNECTION *s);
2570 __owur int ssl3_setup_key_block(SSL_CONNECTION *s);
2571 __owur int ssl3_change_cipher_state(SSL_CONNECTION *s, int which);
2572 void ssl3_cleanup_key_block(SSL_CONNECTION *s);
2573 __owur int ssl3_do_write(SSL_CONNECTION *s, int type);
2574 int ssl3_send_alert(SSL_CONNECTION *s, int level, int desc);
2575 __owur int ssl3_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2576 unsigned char *p, size_t len,
2577 size_t *secret_size);
2578 __owur int ssl3_get_req_cert_type(SSL_CONNECTION *s, WPACKET *pkt);
2579 __owur int ssl3_num_ciphers(void);
2580 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2581 int ssl3_renegotiate(SSL *ssl);
2582 int ssl3_renegotiate_check(SSL *ssl, int initok);
2583 void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
2584 OSSL_PARAM params[]);
2585 __owur int ssl3_dispatch_alert(SSL *s);
2586 __owur size_t ssl3_final_finish_mac(SSL_CONNECTION *s, const char *sender,
2587 size_t slen, unsigned char *p);
2588 __owur int ssl3_finish_mac(SSL_CONNECTION *s, const unsigned char *buf,
2590 void ssl3_free_digest_list(SSL_CONNECTION *s);
2591 __owur unsigned long ssl3_output_cert_chain(SSL_CONNECTION *s, WPACKET *pkt,
2593 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL_CONNECTION *s,
2594 STACK_OF(SSL_CIPHER) *clnt,
2595 STACK_OF(SSL_CIPHER) *srvr);
2596 __owur int ssl3_digest_cached_records(SSL_CONNECTION *s, int keep);
2597 __owur int ssl3_new(SSL *s);
2598 void ssl3_free(SSL *s);
2599 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2600 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2601 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2602 __owur int ssl3_shutdown(SSL *s);
2603 int ssl3_clear(SSL *s);
2604 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2605 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2606 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2607 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2609 __owur int ssl3_do_change_cipher_spec(SSL_CONNECTION *s);
2610 __owur long ssl3_default_timeout(void);
2612 __owur int ssl3_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt,
2614 __owur int tls_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2615 __owur int tls_setup_handshake(SSL_CONNECTION *s);
2616 __owur int dtls1_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2617 __owur int dtls1_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2618 __owur int ssl3_handshake_write(SSL_CONNECTION *s);
2620 __owur int ssl_allow_compression(SSL_CONNECTION *s);
2622 __owur int ssl_version_supported(const SSL_CONNECTION *s, int version,
2623 const SSL_METHOD **meth);
2625 __owur int ssl_set_client_hello_version(SSL_CONNECTION *s);
2626 __owur int ssl_check_version_downgrade(SSL_CONNECTION *s);
2627 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2628 __owur int ssl_choose_server_version(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello,
2630 __owur int ssl_choose_client_version(SSL_CONNECTION *s, int version,
2631 RAW_EXTENSION *extensions);
2632 __owur int ssl_get_min_max_version(const SSL_CONNECTION *s, int *min_version,
2633 int *max_version, int *real_max);
2635 __owur long tls1_default_timeout(void);
2636 __owur int dtls1_do_write(SSL_CONNECTION *s, int type);
2637 void dtls1_set_message_header(SSL_CONNECTION *s,
2640 size_t frag_off, size_t frag_len);
2642 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2645 __owur int dtls1_read_failed(SSL_CONNECTION *s, int code);
2646 __owur int dtls1_buffer_message(SSL_CONNECTION *s, int ccs);
2647 __owur int dtls1_retransmit_message(SSL_CONNECTION *s, unsigned short seq,
2649 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2650 int dtls1_retransmit_buffered_messages(SSL_CONNECTION *s);
2651 void dtls1_clear_received_buffer(SSL_CONNECTION *s);
2652 void dtls1_clear_sent_buffer(SSL_CONNECTION *s);
2653 void dtls1_get_message_header(unsigned char *data,
2654 struct hm_header_st *msg_hdr);
2655 __owur long dtls1_default_timeout(void);
2656 __owur struct timeval *dtls1_get_timeout(SSL_CONNECTION *s,
2657 struct timeval *timeleft);
2658 __owur int dtls1_check_timeout_num(SSL_CONNECTION *s);
2659 __owur int dtls1_handle_timeout(SSL_CONNECTION *s);
2660 void dtls1_start_timer(SSL_CONNECTION *s);
2661 void dtls1_stop_timer(SSL_CONNECTION *s);
2662 __owur int dtls1_is_timer_expired(SSL_CONNECTION *s);
2663 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2665 __owur size_t dtls1_min_mtu(SSL_CONNECTION *s);
2666 void dtls1_hm_fragment_free(hm_fragment *frag);
2667 __owur int dtls1_query_mtu(SSL_CONNECTION *s);
2669 __owur int tls1_new(SSL *s);
2670 void tls1_free(SSL *s);
2671 int tls1_clear(SSL *s);
2673 __owur int dtls1_new(SSL *s);
2674 void dtls1_free(SSL *s);
2675 int dtls1_clear(SSL *s);
2676 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2677 __owur int dtls1_shutdown(SSL *s);
2679 __owur int dtls1_dispatch_alert(SSL *s);
2681 __owur int ssl_init_wbio_buffer(SSL_CONNECTION *s);
2682 int ssl_free_wbio_buffer(SSL_CONNECTION *s);
2684 __owur int tls1_change_cipher_state(SSL_CONNECTION *s, int which);
2685 __owur int tls1_setup_key_block(SSL_CONNECTION *s);
2686 __owur size_t tls1_final_finish_mac(SSL_CONNECTION *s, const char *str,
2687 size_t slen, unsigned char *p);
2688 __owur int tls1_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2689 unsigned char *p, size_t len,
2690 size_t *secret_size);
2691 __owur int tls13_setup_key_block(SSL_CONNECTION *s);
2692 __owur size_t tls13_final_finish_mac(SSL_CONNECTION *s, const char *str, size_t slen,
2694 __owur int tls13_change_cipher_state(SSL_CONNECTION *s, int which);
2695 __owur int tls13_update_key(SSL_CONNECTION *s, int send);
2696 __owur int tls13_hkdf_expand(SSL_CONNECTION *s, const EVP_MD *md,
2697 const unsigned char *secret,
2698 const unsigned char *label, size_t labellen,
2699 const unsigned char *data, size_t datalen,
2700 unsigned char *out, size_t outlen, int fatal);
2701 __owur int tls13_derive_key(SSL_CONNECTION *s, const EVP_MD *md,
2702 const unsigned char *secret, unsigned char *key,
2704 __owur int tls13_derive_iv(SSL_CONNECTION *s, const EVP_MD *md,
2705 const unsigned char *secret, unsigned char *iv,
2707 __owur int tls13_derive_finishedkey(SSL_CONNECTION *s, const EVP_MD *md,
2708 const unsigned char *secret,
2709 unsigned char *fin, size_t finlen);
2710 int tls13_generate_secret(SSL_CONNECTION *s, const EVP_MD *md,
2711 const unsigned char *prevsecret,
2712 const unsigned char *insecret,
2714 unsigned char *outsecret);
2715 __owur int tls13_generate_handshake_secret(SSL_CONNECTION *s,
2716 const unsigned char *insecret,
2717 size_t insecretlen);
2718 __owur int tls13_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2719 unsigned char *prev, size_t prevlen,
2720 size_t *secret_size);
2721 __owur int tls1_export_keying_material(SSL_CONNECTION *s,
2722 unsigned char *out, size_t olen,
2723 const char *label, size_t llen,
2724 const unsigned char *p, size_t plen,
2726 __owur int tls13_export_keying_material(SSL_CONNECTION *s,
2727 unsigned char *out, size_t olen,
2728 const char *label, size_t llen,
2729 const unsigned char *context,
2730 size_t contextlen, int use_context);
2731 __owur int tls13_export_keying_material_early(SSL_CONNECTION *s,
2732 unsigned char *out, size_t olen,
2733 const char *label, size_t llen,
2734 const unsigned char *context,
2736 __owur int tls1_alert_code(int code);
2737 __owur int tls13_alert_code(int code);
2738 __owur int ssl3_alert_code(int code);
2740 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s);
2742 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2744 __owur uint16_t ssl_group_id_internal_to_tls13(uint16_t curve_id);
2745 __owur uint16_t ssl_group_id_tls13_to_internal(uint16_t curve_id);
2746 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t curve_id);
2747 __owur int tls1_group_id2nid(uint16_t group_id, int include_unknown);
2748 __owur uint16_t tls1_nid2group_id(int nid);
2749 __owur int tls1_check_group_id(SSL_CONNECTION *s, uint16_t group_id,
2750 int check_own_curves);
2751 __owur uint16_t tls1_shared_group(SSL_CONNECTION *s, int nmatch);
2752 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2753 int *curves, size_t ncurves);
2754 __owur int tls1_set_groups_list(SSL_CTX *ctx, uint16_t **pext, size_t *pextlen,
2756 __owur EVP_PKEY *ssl_generate_pkey_group(SSL_CONNECTION *s, uint16_t id);
2757 __owur int tls_valid_group(SSL_CONNECTION *s, uint16_t group_id, int minversion,
2758 int maxversion, int isec, int *okfortls13);
2759 __owur EVP_PKEY *ssl_generate_param_group(SSL_CONNECTION *s, uint16_t id);
2760 void tls1_get_formatlist(SSL_CONNECTION *s, const unsigned char **pformats,
2761 size_t *num_formats);
2762 __owur int tls1_check_ec_tmp_key(SSL_CONNECTION *s, unsigned long id);
2764 __owur int tls_group_allowed(SSL_CONNECTION *s, uint16_t curve, int op);
2765 void tls1_get_supported_groups(SSL_CONNECTION *s, const uint16_t **pgroups,
2766 size_t *pgroupslen);
2768 __owur int tls1_set_server_sigalgs(SSL_CONNECTION *s);
2770 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL_CONNECTION *s,
2771 CLIENTHELLO_MSG *hello,
2773 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL_CONNECTION *s,
2774 const unsigned char *etick,
2776 const unsigned char *sess_id,
2777 size_t sesslen, SSL_SESSION **psess);
2779 __owur int tls_use_ticket(SSL_CONNECTION *s);
2781 void ssl_set_sig_mask(uint32_t *pmask_a, SSL_CONNECTION *s, int op);
2783 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2784 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2786 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2788 int tls1_check_chain(SSL_CONNECTION *s, X509 *x, EVP_PKEY *pk,
2789 STACK_OF(X509) *chain, int idx);
2790 void tls1_set_cert_validity(SSL_CONNECTION *s);
2792 # ifndef OPENSSL_NO_CT
2793 __owur int ssl_validate_ct(SSL_CONNECTION *s);
2796 __owur EVP_PKEY *ssl_get_auto_dh(SSL_CONNECTION *s);
2798 __owur int ssl_security_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x, int vfy,
2800 __owur int ssl_security_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk,
2803 int tls_choose_sigalg(SSL_CONNECTION *s, int fatalerrs);
2805 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2806 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2807 __owur long ssl_get_algorithm2(SSL_CONNECTION *s);
2808 __owur int tls12_copy_sigalgs(SSL_CONNECTION *s, WPACKET *pkt,
2809 const uint16_t *psig, size_t psiglen);
2810 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2811 __owur int tls1_save_sigalgs(SSL_CONNECTION *s, PACKET *pkt, int cert);
2812 __owur int tls1_process_sigalgs(SSL_CONNECTION *s);
2813 __owur int tls1_set_peer_legacy_sigalg(SSL_CONNECTION *s, const EVP_PKEY *pkey);
2814 __owur int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu,
2815 const EVP_MD **pmd);
2816 __owur size_t tls12_get_psigalgs(SSL_CONNECTION *s, int sent,
2817 const uint16_t **psigs);
2818 __owur int tls_check_sigalg_curve(const SSL_CONNECTION *s, int curve);
2819 __owur int tls12_check_peer_sigalg(SSL_CONNECTION *s, uint16_t, EVP_PKEY *pkey);
2820 __owur int ssl_set_client_disabled(SSL_CONNECTION *s);
2821 __owur int ssl_cipher_disabled(const SSL_CONNECTION *s, const SSL_CIPHER *c,
2824 __owur int ssl_handshake_hash(SSL_CONNECTION *s,
2825 unsigned char *out, size_t outlen,
2827 __owur const EVP_MD *ssl_md(SSL_CTX *ctx, int idx);
2828 __owur const EVP_MD *ssl_handshake_md(SSL_CONNECTION *s);
2829 __owur const EVP_MD *ssl_prf_md(SSL_CONNECTION *s);
2832 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2833 * with |ssl|, if logging is enabled. It returns one on success and zero on
2834 * failure. The entry is identified by the first 8 bytes of
2835 * |encrypted_premaster|.
2837 __owur int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *s,
2838 const uint8_t *encrypted_premaster,
2839 size_t encrypted_premaster_len,
2840 const uint8_t *premaster,
2841 size_t premaster_len);
2844 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2845 * logging is available. It returns one on success and zero on failure. It tags
2846 * the entry with |label|.
2848 __owur int ssl_log_secret(SSL_CONNECTION *s, const char *label,
2849 const uint8_t *secret, size_t secret_len);
2851 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2852 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2853 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2854 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2855 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2856 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2857 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2858 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2860 # ifndef OPENSSL_NO_KTLS
2862 int ktls_check_supported_cipher(const SSL_CONNECTION *s, const EVP_CIPHER *c,
2864 int ktls_configure_crypto(SSL_CONNECTION *s, const EVP_CIPHER *c,
2865 void *rl_sequence, ktls_crypto_info_t *crypto_info,
2866 int is_tx, unsigned char *iv, size_t ivlen,
2867 unsigned char *key, size_t keylen,
2868 unsigned char *mac_key, size_t mac_secret_size);
2871 __owur int srp_generate_server_master_secret(SSL_CONNECTION *s);
2872 __owur int srp_generate_client_master_secret(SSL_CONNECTION *s);
2873 __owur int srp_verify_server_param(SSL_CONNECTION *s);
2875 /* statem/statem_srvr.c */
2877 __owur int send_certificate_request(SSL_CONNECTION *s);
2879 /* statem/extensions_cust.c */
2881 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2882 ENDPOINT role, unsigned int ext_type,
2885 void custom_ext_init(custom_ext_methods *meths);
2887 __owur int custom_ext_parse(SSL_CONNECTION *s, unsigned int context,
2888 unsigned int ext_type,
2889 const unsigned char *ext_data, size_t ext_size,
2890 X509 *x, size_t chainidx);
2891 __owur int custom_ext_add(SSL_CONNECTION *s, int context, WPACKET *pkt, X509 *x,
2892 size_t chainidx, int maxversion);
2894 __owur int custom_exts_copy(custom_ext_methods *dst,
2895 const custom_ext_methods *src);
2896 __owur int custom_exts_copy_flags(custom_ext_methods *dst,
2897 const custom_ext_methods *src);
2898 void custom_exts_free(custom_ext_methods *exts);
2900 void ssl_comp_free_compression_methods_int(void);
2903 void ssl_ctx_system_config(SSL_CTX *ctx);
2905 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
2907 const char *properties);
2908 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher);
2909 void ssl_evp_cipher_free(const EVP_CIPHER *cipher);
2910 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
2912 const char *properties);
2913 int ssl_evp_md_up_ref(const EVP_MD *md);
2914 void ssl_evp_md_free(const EVP_MD *md);
2916 int tls_provider_set_tls_params(SSL_CONNECTION *s, EVP_CIPHER_CTX *ctx,
2917 const EVP_CIPHER *ciph,
2920 void tls_engine_finish(ENGINE *e);
2921 const EVP_CIPHER *tls_get_cipher_from_engine(int nid);
2922 const EVP_MD *tls_get_digest_from_engine(int nid);
2923 int tls_engine_load_ssl_client_cert(SSL_CONNECTION *s, X509 **px509,
2925 int ssl_hmac_old_new(SSL_HMAC *ret);
2926 void ssl_hmac_old_free(SSL_HMAC *ctx);
2927 int ssl_hmac_old_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
2928 int ssl_hmac_old_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
2929 int ssl_hmac_old_final(SSL_HMAC *ctx, unsigned char *md, size_t *len);
2930 size_t ssl_hmac_old_size(const SSL_HMAC *ctx);
2932 int ssl_ctx_srp_ctx_free_intern(SSL_CTX *ctx);
2933 int ssl_ctx_srp_ctx_init_intern(SSL_CTX *ctx);
2934 int ssl_srp_ctx_free_intern(SSL_CONNECTION *s);
2935 int ssl_srp_ctx_init_intern(SSL_CONNECTION *s);
2937 int ssl_srp_calc_a_param_intern(SSL_CONNECTION *s);
2938 int ssl_srp_server_param_with_username_intern(SSL_CONNECTION *s, int *ad);
2940 void ssl_session_calculate_timeout(SSL_SESSION *ss);
2942 # else /* OPENSSL_UNIT_TEST */
2944 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2945 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2949 /* Some helper routines to support TSAN operations safely */
2950 static ossl_unused ossl_inline int ssl_tsan_lock(const SSL_CTX *ctx)
2952 #ifdef TSAN_REQUIRES_LOCKING
2953 if (!CRYPTO_THREAD_write_lock(ctx->tsan_lock))
2959 static ossl_unused ossl_inline void ssl_tsan_unlock(const SSL_CTX *ctx)
2961 #ifdef TSAN_REQUIRES_LOCKING
2962 CRYPTO_THREAD_unlock(ctx->tsan_lock);
2966 static ossl_unused ossl_inline void ssl_tsan_counter(const SSL_CTX *ctx,
2967 TSAN_QUALIFIER int *stat)
2969 if (ssl_tsan_lock(ctx)) {
2971 ssl_tsan_unlock(ctx);