2 * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
12 #ifndef OSSL_SSL_LOCAL_H
13 # define OSSL_SSL_LOCAL_H
15 # include "internal/e_os.h" /* struct timeval for DTLS */
19 # include "internal/common.h" /* for HAS_PREFIX */
21 # include <openssl/buffer.h>
22 # include <openssl/bio.h>
23 # include <openssl/comp.h>
24 # include <openssl/dsa.h>
25 # include <openssl/err.h>
26 # include <openssl/ssl.h>
27 # include <openssl/async.h>
28 # include <openssl/symhacks.h>
29 # include <openssl/ct.h>
30 # include "internal/recordmethod.h"
31 # include "internal/statem.h"
32 # include "internal/packet.h"
33 # include "internal/dane.h"
34 # include "internal/refcount.h"
35 # include "internal/tsan_assist.h"
36 # include "internal/bio.h"
37 # include "internal/ktls.h"
38 # include "internal/time.h"
39 # include "internal/ssl.h"
40 # include "record/record.h"
42 # ifdef OPENSSL_BUILD_SHLIBSSL
43 # undef OPENSSL_EXTERN
44 # define OPENSSL_EXTERN OPENSSL_EXPORT
47 # define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION
48 # define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION
51 * DTLS version numbers are strange because they're inverted. Except for
52 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
54 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
55 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
56 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
57 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
58 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
60 # define SSL_AD_NO_ALERT -1
63 * Define the Bitmasks for SSL_CIPHER.algorithms.
64 * This bits are used packed as dense as possible. If new methods/ciphers
65 * etc will be added, the bits a likely to change, so this information
66 * is for internal library use only, even though SSL_CIPHER.algorithms
67 * can be publicly accessed.
68 * Use the according functions for cipher management instead.
70 * The bit mask handling in the selection and sorting scheme in
71 * ssl_create_cipher_list() has only limited capabilities, reflecting
72 * that the different entities within are mutually exclusive:
73 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
76 /* Bits for algorithm_mkey (key exchange algorithm) */
77 /* RSA key exchange */
78 # define SSL_kRSA 0x00000001U
79 /* tmp DH key no DH cert */
80 # define SSL_kDHE 0x00000002U
82 # define SSL_kEDH SSL_kDHE
84 # define SSL_kECDHE 0x00000004U
86 # define SSL_kEECDH SSL_kECDHE
88 # define SSL_kPSK 0x00000008U
89 /* GOST key exchange */
90 # define SSL_kGOST 0x00000010U
92 # define SSL_kSRP 0x00000020U
94 # define SSL_kRSAPSK 0x00000040U
95 # define SSL_kECDHEPSK 0x00000080U
96 # define SSL_kDHEPSK 0x00000100U
97 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */
98 # define SSL_kGOST18 0x00000200U
102 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
104 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
105 # define SSL_kANY 0x00000000U
107 /* Bits for algorithm_auth (server authentication) */
109 # define SSL_aRSA 0x00000001U
111 # define SSL_aDSS 0x00000002U
112 /* no auth (i.e. use ADH or AECDH) */
113 # define SSL_aNULL 0x00000004U
115 # define SSL_aECDSA 0x00000008U
117 # define SSL_aPSK 0x00000010U
118 /* GOST R 34.10-2001 signature auth */
119 # define SSL_aGOST01 0x00000020U
121 # define SSL_aSRP 0x00000040U
122 /* GOST R 34.10-2012 signature auth */
123 # define SSL_aGOST12 0x00000080U
124 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
125 # define SSL_aANY 0x00000000U
126 /* All bits requiring a certificate */
128 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
130 /* Bits for algorithm_enc (symmetric encryption) */
131 # define SSL_DES 0x00000001U
132 # define SSL_3DES 0x00000002U
133 # define SSL_RC4 0x00000004U
134 # define SSL_RC2 0x00000008U
135 # define SSL_IDEA 0x00000010U
136 # define SSL_eNULL 0x00000020U
137 # define SSL_AES128 0x00000040U
138 # define SSL_AES256 0x00000080U
139 # define SSL_CAMELLIA128 0x00000100U
140 # define SSL_CAMELLIA256 0x00000200U
141 # define SSL_eGOST2814789CNT 0x00000400U
142 # define SSL_SEED 0x00000800U
143 # define SSL_AES128GCM 0x00001000U
144 # define SSL_AES256GCM 0x00002000U
145 # define SSL_AES128CCM 0x00004000U
146 # define SSL_AES256CCM 0x00008000U
147 # define SSL_AES128CCM8 0x00010000U
148 # define SSL_AES256CCM8 0x00020000U
149 # define SSL_eGOST2814789CNT12 0x00040000U
150 # define SSL_CHACHA20POLY1305 0x00080000U
151 # define SSL_ARIA128GCM 0x00100000U
152 # define SSL_ARIA256GCM 0x00200000U
153 # define SSL_MAGMA 0x00400000U
154 # define SSL_KUZNYECHIK 0x00800000U
156 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
157 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
158 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
159 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
160 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
161 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
162 # define SSL_ARIA (SSL_ARIAGCM)
163 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \
164 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \
165 | SSL_CAMELLIA256 | SSL_SEED)
167 /* Bits for algorithm_mac (symmetric authentication) */
169 # define SSL_MD5 0x00000001U
170 # define SSL_SHA1 0x00000002U
171 # define SSL_GOST94 0x00000004U
172 # define SSL_GOST89MAC 0x00000008U
173 # define SSL_SHA256 0x00000010U
174 # define SSL_SHA384 0x00000020U
175 /* Not a real MAC, just an indication it is part of cipher */
176 # define SSL_AEAD 0x00000040U
177 # define SSL_GOST12_256 0x00000080U
178 # define SSL_GOST89MAC12 0x00000100U
179 # define SSL_GOST12_512 0x00000200U
180 # define SSL_MAGMAOMAC 0x00000400U
181 # define SSL_KUZNYECHIKOMAC 0x00000800U
184 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
185 * sure to update this constant too
188 # define SSL_MD_MD5_IDX 0
189 # define SSL_MD_SHA1_IDX 1
190 # define SSL_MD_GOST94_IDX 2
191 # define SSL_MD_GOST89MAC_IDX 3
192 # define SSL_MD_SHA256_IDX 4
193 # define SSL_MD_SHA384_IDX 5
194 # define SSL_MD_GOST12_256_IDX 6
195 # define SSL_MD_GOST89MAC12_IDX 7
196 # define SSL_MD_GOST12_512_IDX 8
197 # define SSL_MD_MD5_SHA1_IDX 9
198 # define SSL_MD_SHA224_IDX 10
199 # define SSL_MD_SHA512_IDX 11
200 # define SSL_MD_MAGMAOMAC_IDX 12
201 # define SSL_MD_KUZNYECHIKOMAC_IDX 13
202 # define SSL_MAX_DIGEST 14
204 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
206 /* Bits for algorithm2 (handshake digests and other extra flags) */
208 /* Bits 0-7 are handshake MAC */
209 # define SSL_HANDSHAKE_MAC_MASK 0xFF
210 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
211 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
212 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
213 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
214 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
215 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
216 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
218 /* Bits 8-15 bits are PRF */
219 # define TLS1_PRF_DGST_SHIFT 8
220 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
221 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
222 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
223 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
224 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
225 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
226 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
229 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
230 * goes into algorithm2)
232 # define TLS1_STREAM_MAC 0x10000
234 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites
235 * (currently this also goes into algorithm2)
237 # define TLS1_TLSTREE 0x20000
239 # define SSL_STRONG_MASK 0x0000001FU
240 # define SSL_DEFAULT_MASK 0X00000020U
242 # define SSL_STRONG_NONE 0x00000001U
243 # define SSL_LOW 0x00000002U
244 # define SSL_MEDIUM 0x00000004U
245 # define SSL_HIGH 0x00000008U
246 # define SSL_FIPS 0x00000010U
247 # define SSL_NOT_DEFAULT 0x00000020U
249 /* we have used 0000003f - 26 bits left to go */
251 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
252 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
254 /* Check if an SSL structure is using DTLS */
255 # define SSL_CONNECTION_IS_DTLS(s) \
256 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
258 /* Check if we are using TLSv1.3 */
259 # define SSL_CONNECTION_IS_TLS13(s) (!SSL_CONNECTION_IS_DTLS(s) \
260 && SSL_CONNECTION_GET_SSL(s)->method->version >= TLS1_3_VERSION \
261 && SSL_CONNECTION_GET_SSL(s)->method->version != TLS_ANY_VERSION)
263 # define SSL_CONNECTION_TREAT_AS_TLS13(s) \
264 (SSL_CONNECTION_IS_TLS13(s) \
265 || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
266 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
267 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
268 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
269 || (s)->hello_retry_request == SSL_HRR_PENDING)
271 # define SSL_IS_FIRST_HANDSHAKE(s) ((s)->s3.tmp.finish_md_len == 0 \
272 || (s)->s3.tmp.peer_finish_md_len == 0)
274 /* See if we need explicit IV */
275 # define SSL_USE_EXPLICIT_IV(s) \
276 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
278 * See if we use signature algorithms extension and signature algorithm
281 # define SSL_USE_SIGALGS(s) \
282 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
284 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
285 * apply to others in future.
287 # define SSL_USE_TLS1_2_CIPHERS(s) \
288 (SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
290 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
291 * flags because it may not be set to correct version yet.
293 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
294 ((!SSL_CONNECTION_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
295 (SSL_CONNECTION_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
297 * Determine if a client should send signature algorithms extension:
298 * as with TLS1.2 cipher we can't rely on method flags.
300 # define SSL_CLIENT_USE_SIGALGS(s) \
301 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
303 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
304 (((value) >= TLSEXT_max_fragment_length_512) && \
305 ((value) <= TLSEXT_max_fragment_length_4096))
306 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
307 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
308 # define GET_MAX_FRAGMENT_LENGTH(session) \
309 (512U << (session->ext.max_fragment_len_mode - 1))
311 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
312 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
314 /* alert_dispatch values */
316 /* No alert pending */
317 # define SSL_ALERT_DISPATCH_NONE 0
319 # define SSL_ALERT_DISPATCH_PENDING 1
320 /* Pending alert write needs to be retried */
321 # define SSL_ALERT_DISPATCH_RETRY 2
323 /* Mostly for SSLv3 */
324 # define SSL_PKEY_RSA 0
325 # define SSL_PKEY_RSA_PSS_SIGN 1
326 # define SSL_PKEY_DSA_SIGN 2
327 # define SSL_PKEY_ECC 3
328 # define SSL_PKEY_GOST01 4
329 # define SSL_PKEY_GOST12_256 5
330 # define SSL_PKEY_GOST12_512 6
331 # define SSL_PKEY_ED25519 7
332 # define SSL_PKEY_ED448 8
333 # define SSL_PKEY_NUM 9
335 # define SSL_ENC_DES_IDX 0
336 # define SSL_ENC_3DES_IDX 1
337 # define SSL_ENC_RC4_IDX 2
338 # define SSL_ENC_RC2_IDX 3
339 # define SSL_ENC_IDEA_IDX 4
340 # define SSL_ENC_NULL_IDX 5
341 # define SSL_ENC_AES128_IDX 6
342 # define SSL_ENC_AES256_IDX 7
343 # define SSL_ENC_CAMELLIA128_IDX 8
344 # define SSL_ENC_CAMELLIA256_IDX 9
345 # define SSL_ENC_GOST89_IDX 10
346 # define SSL_ENC_SEED_IDX 11
347 # define SSL_ENC_AES128GCM_IDX 12
348 # define SSL_ENC_AES256GCM_IDX 13
349 # define SSL_ENC_AES128CCM_IDX 14
350 # define SSL_ENC_AES256CCM_IDX 15
351 # define SSL_ENC_AES128CCM8_IDX 16
352 # define SSL_ENC_AES256CCM8_IDX 17
353 # define SSL_ENC_GOST8912_IDX 18
354 # define SSL_ENC_CHACHA_IDX 19
355 # define SSL_ENC_ARIA128GCM_IDX 20
356 # define SSL_ENC_ARIA256GCM_IDX 21
357 # define SSL_ENC_MAGMA_IDX 22
358 # define SSL_ENC_KUZNYECHIK_IDX 23
359 # define SSL_ENC_NUM_IDX 24
362 * SSL_kRSA <- RSA_ENC
363 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
364 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
365 * SSL_aRSA <- RSA_ENC | RSA_SIGN
366 * SSL_aDSS <- DSA_SIGN
370 #define CERT_INVALID 0
371 #define CERT_PUBLIC_KEY 1
372 #define CERT_PRIVATE_KEY 2
375 /* Certificate Type State */
376 # define OSSL_CERT_TYPE_CTOS_NONE 0
377 # define OSSL_CERT_TYPE_CTOS_GOOD 1
378 # define OSSL_CERT_TYPE_CTOS_ERROR 2
380 /* Post-Handshake Authentication state */
383 SSL_PHA_EXT_SENT, /* client-side only: extension sent */
384 SSL_PHA_EXT_RECEIVED, /* server-side only: extension received */
385 SSL_PHA_REQUEST_PENDING, /* server-side only: request pending */
386 SSL_PHA_REQUESTED /* request received by client, or sent by server */
389 /* CipherSuite length. SSLv3 and all TLS versions. */
390 # define TLS_CIPHER_LEN 2
391 /* used to hold info on the particular ciphers used */
392 struct ssl_cipher_st {
394 const char *name; /* text name */
395 const char *stdname; /* RFC name */
396 uint32_t id; /* id, 4 bytes, first is version */
398 * changed in 1.0.0: these four used to be portions of a single value
401 uint32_t algorithm_mkey; /* key exchange algorithm */
402 uint32_t algorithm_auth; /* server authentication */
403 uint32_t algorithm_enc; /* symmetric encryption */
404 uint32_t algorithm_mac; /* symmetric authentication */
405 int min_tls; /* minimum SSL/TLS protocol version */
406 int max_tls; /* maximum SSL/TLS protocol version */
407 int min_dtls; /* minimum DTLS protocol version */
408 int max_dtls; /* maximum DTLS protocol version */
409 uint32_t algo_strength; /* strength and export flags */
410 uint32_t algorithm2; /* Extra flags */
411 int32_t strength_bits; /* Number of bits really used */
412 uint32_t alg_bits; /* Number of bits for algorithm */
415 /* Used to hold SSL/TLS functions */
416 struct ssl_method_st {
420 SSL *(*ssl_new) (SSL_CTX *ctx);
421 void (*ssl_free) (SSL *s);
422 int (*ssl_reset) (SSL *s);
423 int (*ssl_init) (SSL *s);
424 int (*ssl_clear) (SSL *s);
425 void (*ssl_deinit) (SSL *s);
426 int (*ssl_accept) (SSL *s);
427 int (*ssl_connect) (SSL *s);
428 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
429 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
430 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
431 int (*ssl_shutdown) (SSL *s);
432 int (*ssl_renegotiate) (SSL *s);
433 int (*ssl_renegotiate_check) (SSL *s, int);
434 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
435 unsigned char *buf, size_t len, int peek,
437 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
439 int (*ssl_dispatch_alert) (SSL *s);
440 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
441 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
442 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
443 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
445 size_t (*ssl_pending) (const SSL *s);
446 int (*num_ciphers) (void);
447 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
448 OSSL_TIME (*get_timeout) (void);
449 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
450 int (*ssl_version) (void);
451 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
452 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
456 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
457 * consistency, even in the event of OPENSSL_NO_PSK being defined.
459 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512
462 * Lets make this into an ASN.1 type structure as follows
463 * SSL_SESSION_ID ::= SEQUENCE {
464 * version INTEGER, -- structure version number
465 * SSLversion INTEGER, -- SSL version number
466 * Cipher OCTET STRING, -- the 3 byte cipher ID
467 * Session_ID OCTET STRING, -- the Session ID
468 * Master_key OCTET STRING, -- the master key
469 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
470 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
471 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
472 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
473 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
474 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
475 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
476 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
477 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
478 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
479 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
480 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
481 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
482 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
484 * Look in ssl/ssl_asn1.c for more details
485 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
487 struct ssl_session_st {
488 int ssl_version; /* what ssl version session info is being kept
490 size_t master_key_length;
492 /* TLSv1.3 early_secret used for external PSKs */
493 unsigned char early_secret[EVP_MAX_MD_SIZE];
495 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
498 unsigned char master_key[TLS13_MAX_RESUMPTION_PSK_LENGTH];
499 /* session_id - valid? */
500 size_t session_id_length;
501 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
503 * this is used to determine whether the session is being reused in the
504 * appropriate context. It is up to the application to set this, via
507 size_t sid_ctx_length;
508 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
509 # ifndef OPENSSL_NO_PSK
510 char *psk_identity_hint;
514 * Used to indicate that session resumption is not allowed. Applications
515 * can also set this bit for a new session via not_resumable_session_cb
516 * to disable session caching and tickets.
519 /* Peer raw public key, if available */
521 /* This is the cert and type for the other end. */
523 /* Certificate chain peer sent. */
524 STACK_OF(X509) *peer_chain;
526 * when app_verify_callback accepts a session where the peer's
527 * certificate is not ok, we must remember the error for session reuse:
529 long verify_result; /* only for servers */
530 CRYPTO_REF_COUNT references;
533 OSSL_TIME calc_timeout;
534 unsigned int compress_meth; /* Need to lookup the method */
535 const SSL_CIPHER *cipher;
536 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
537 * load the 'cipher' structure */
538 unsigned int kex_group; /* TLS group from key exchange */
539 CRYPTO_EX_DATA ex_data; /* application specific data */
541 * These are used to make removal of session-ids more efficient and to
542 * implement a maximum cache size.
544 struct ssl_session_st *prev, *next;
549 unsigned char *tick; /* Session ticket */
550 size_t ticklen; /* Session ticket length */
551 /* Session lifetime hint in seconds */
552 unsigned long tick_lifetime_hint;
553 uint32_t tick_age_add;
554 /* Max number of bytes that can be sent as early data */
555 uint32_t max_early_data;
556 /* The ALPN protocol selected for this session */
557 unsigned char *alpn_selected;
558 size_t alpn_selected_len;
560 * Maximum Fragment Length as per RFC 4366.
561 * If this value does not contain RFC 4366 allowed values (1-4) then
562 * either the Maximum Fragment Length Negotiation failed or was not
565 uint8_t max_fragment_len_mode;
567 # ifndef OPENSSL_NO_SRP
570 unsigned char *ticket_appdata;
571 size_t ticket_appdata_len;
577 /* Extended master secret support */
578 # define SSL_SESS_FLAG_EXTMS 0x1
580 # ifndef OPENSSL_NO_SRP
582 typedef struct srp_ctx_st {
583 /* param for all the callbacks */
585 /* set client Hello login callback */
586 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
587 /* set SRP N/g param callback for verification */
588 int (*SRP_verify_param_callback) (SSL *, void *);
589 /* set SRP client passwd callback */
590 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
592 BIGNUM *N, *g, *s, *B, *A;
596 unsigned long srp_Mask;
602 SSL_EARLY_DATA_NONE = 0,
603 SSL_EARLY_DATA_CONNECT_RETRY,
604 SSL_EARLY_DATA_CONNECTING,
605 SSL_EARLY_DATA_WRITE_RETRY,
606 SSL_EARLY_DATA_WRITING,
607 SSL_EARLY_DATA_WRITE_FLUSH,
608 SSL_EARLY_DATA_UNAUTH_WRITING,
609 SSL_EARLY_DATA_FINISHED_WRITING,
610 SSL_EARLY_DATA_ACCEPT_RETRY,
611 SSL_EARLY_DATA_ACCEPTING,
612 SSL_EARLY_DATA_READ_RETRY,
613 SSL_EARLY_DATA_READING,
614 SSL_EARLY_DATA_FINISHED_READING
615 } SSL_EARLY_DATA_STATE;
618 * We check that the amount of unreadable early data doesn't exceed
619 * max_early_data. max_early_data is given in plaintext bytes. However if it is
620 * unreadable then we only know the number of ciphertext bytes. We also don't
621 * know how much the overhead should be because it depends on the ciphersuite.
622 * We make a small allowance. We assume 5 records of actual data plus the end
623 * of early data alert record. Each record has a tag and a content type byte.
624 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
625 * content of the alert record either which is 2 bytes.
627 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
630 * The allowance we have between the client's calculated ticket age and our own.
631 * We allow for 10 seconds. If a ticket is presented and the
632 * client's age calculation is different by more than this than our own then we
633 * do not allow that ticket for early_data.
635 # define TICKET_AGE_ALLOWANCE ossl_seconds2time(10)
637 #define MAX_COMPRESSIONS_SIZE 255
645 typedef struct raw_extension_st {
646 /* Raw packet data for the extension */
648 /* Set to 1 if the extension is present or 0 otherwise */
650 /* Set to 1 if we have already parsed the extension or 0 otherwise */
652 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
654 /* Track what order extensions are received in (0-based). */
655 size_t received_order;
660 unsigned int legacy_version;
661 unsigned char random[SSL3_RANDOM_SIZE];
662 size_t session_id_len;
663 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
664 size_t dtls_cookie_len;
665 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
667 size_t compressions_len;
668 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
670 size_t pre_proc_exts_len;
671 RAW_EXTENSION *pre_proc_exts;
675 * Extension index values NOTE: Any updates to these defines should be mirrored
676 * with equivalent updates to ext_defs in extensions.c
678 typedef enum tlsext_index_en {
679 TLSEXT_IDX_renegotiate,
680 TLSEXT_IDX_server_name,
681 TLSEXT_IDX_max_fragment_length,
683 TLSEXT_IDX_ec_point_formats,
684 TLSEXT_IDX_supported_groups,
685 TLSEXT_IDX_session_ticket,
686 TLSEXT_IDX_status_request,
687 TLSEXT_IDX_next_proto_neg,
688 TLSEXT_IDX_application_layer_protocol_negotiation,
690 TLSEXT_IDX_encrypt_then_mac,
691 TLSEXT_IDX_signed_certificate_timestamp,
692 TLSEXT_IDX_extended_master_secret,
693 TLSEXT_IDX_signature_algorithms_cert,
694 TLSEXT_IDX_post_handshake_auth,
695 TLSEXT_IDX_client_cert_type,
696 TLSEXT_IDX_server_cert_type,
697 TLSEXT_IDX_signature_algorithms,
698 TLSEXT_IDX_supported_versions,
699 TLSEXT_IDX_psk_kex_modes,
700 TLSEXT_IDX_key_share,
702 TLSEXT_IDX_cryptopro_bug,
703 TLSEXT_IDX_compress_certificate,
704 TLSEXT_IDX_early_data,
705 TLSEXT_IDX_certificate_authorities,
708 /* Dummy index - must always be the last entry */
709 TLSEXT_IDX_num_builtins
712 DEFINE_LHASH_OF_EX(SSL_SESSION);
713 /* Needed in ssl_cert.c */
714 DEFINE_LHASH_OF_EX(X509_NAME);
716 # define TLSEXT_KEYNAME_LENGTH 16
717 # define TLSEXT_TICK_KEY_LENGTH 32
719 typedef struct ssl_ctx_ext_secure_st {
720 unsigned char tick_hmac_key[TLSEXT_TICK_KEY_LENGTH];
721 unsigned char tick_aes_key[TLSEXT_TICK_KEY_LENGTH];
722 } SSL_CTX_EXT_SECURE;
725 * Helper function for HMAC
726 * The structure should be considered opaque, it will change once the low
727 * level deprecated calls are removed. At that point it can be replaced
728 * by EVP_MAC_CTX and most of the functions converted to macros or inlined
731 typedef struct ssl_hmac_st {
733 # ifndef OPENSSL_NO_DEPRECATED_3_0
738 SSL_HMAC *ssl_hmac_new(const SSL_CTX *ctx);
739 void ssl_hmac_free(SSL_HMAC *ctx);
740 # ifndef OPENSSL_NO_DEPRECATED_3_0
741 HMAC_CTX *ssl_hmac_get0_HMAC_CTX(SSL_HMAC *ctx);
743 EVP_MAC_CTX *ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC *ctx);
744 int ssl_hmac_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
745 int ssl_hmac_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
746 int ssl_hmac_final(SSL_HMAC *ctx, unsigned char *md, size_t *len,
748 size_t ssl_hmac_size(const SSL_HMAC *ctx);
750 int ssl_get_EC_curve_nid(const EVP_PKEY *pkey);
751 __owur int tls13_set_encoded_pub_key(EVP_PKEY *pkey,
752 const unsigned char *enckey,
755 typedef struct tls_group_info_st {
756 char *tlsname; /* Curve Name as in TLS specs */
757 char *realname; /* Curve Name according to provider */
758 char *algorithm; /* Algorithm name to fetch */
759 unsigned int secbits; /* Bits of security (from SP800-57) */
760 uint16_t group_id; /* Group ID */
761 int mintls; /* Minimum TLS version, -1 unsupported */
762 int maxtls; /* Maximum TLS version (or 0 for undefined) */
763 int mindtls; /* Minimum DTLS version, -1 unsupported */
764 int maxdtls; /* Maximum DTLS version (or 0 for undefined) */
765 char is_kem; /* Mode for this Group: 0 is KEX, 1 is KEM */
768 typedef struct tls_sigalg_info_st {
769 char *name; /* name as in IANA TLS specs */
770 uint16_t code_point; /* IANA-specified code point of sigalg-name */
771 char *sigalg_name; /* (combined) sigalg name */
772 char *sigalg_oid; /* (combined) sigalg OID */
773 char *sig_name; /* pure signature algorithm name */
774 char *sig_oid; /* pure signature algorithm OID */
775 char *hash_name; /* hash algorithm name */
776 char *hash_oid; /* hash algorithm OID */
777 char *keytype; /* keytype name */
778 char *keytype_oid; /* keytype OID */
779 unsigned int secbits; /* Bits of security (from SP800-57) */
780 int mintls; /* Minimum TLS version, -1 unsupported */
781 int maxtls; /* Maximum TLS version (or 0 for undefined) */
785 * Structure containing table entry of certificate info corresponding to
789 int nid; /* NID of public key algorithm */
790 uint32_t amask; /* authmask corresponding to key type */
794 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
795 # define TLS_GROUP_CURVE_PRIME 0x00000001U
796 # define TLS_GROUP_CURVE_CHAR2 0x00000002U
797 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U
798 # define TLS_GROUP_FFDHE 0x00000008U
799 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
801 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
804 OSSL_LIB_CTX *libctx;
806 const SSL_METHOD *method;
807 STACK_OF(SSL_CIPHER) *cipher_list;
808 /* same as above but sorted for lookup */
809 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
810 /* TLSv1.3 specific ciphersuites */
811 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
812 struct x509_store_st /* X509_STORE */ *cert_store;
813 LHASH_OF(SSL_SESSION) *sessions;
815 * Most session-ids that will be cached, default is
816 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
818 size_t session_cache_size;
819 struct ssl_session_st *session_cache_head;
820 struct ssl_session_st *session_cache_tail;
822 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
823 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
824 * means only SSL_accept will cache SSL_SESSIONS.
826 uint32_t session_cache_mode;
828 * If timeout is not 0, it is the default timeout value set when
829 * SSL_new() is called. This has been put in to make life easier to set
832 OSSL_TIME session_timeout;
834 * If this callback is not null, it will be called each time a session id
835 * is added to the cache. If this function returns 1, it means that the
836 * callback will do a SSL_SESSION_free() when it has finished using it.
837 * Otherwise, on 0, it means the callback has finished with it. If
838 * remove_session_cb is not null, it will be called when a session-id is
839 * removed from the cache. After the call, OpenSSL will
840 * SSL_SESSION_free() it.
842 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
843 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
844 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
845 const unsigned char *data, int len,
848 TSAN_QUALIFIER int sess_connect; /* SSL new conn - started */
849 TSAN_QUALIFIER int sess_connect_renegotiate; /* SSL reneg - requested */
850 TSAN_QUALIFIER int sess_connect_good; /* SSL new conne/reneg - finished */
851 TSAN_QUALIFIER int sess_accept; /* SSL new accept - started */
852 TSAN_QUALIFIER int sess_accept_renegotiate; /* SSL reneg - requested */
853 TSAN_QUALIFIER int sess_accept_good; /* SSL accept/reneg - finished */
854 TSAN_QUALIFIER int sess_miss; /* session lookup misses */
855 TSAN_QUALIFIER int sess_timeout; /* reuse attempt on timeouted session */
856 TSAN_QUALIFIER int sess_cache_full; /* session removed due to full cache */
857 TSAN_QUALIFIER int sess_hit; /* session reuse actually done */
858 TSAN_QUALIFIER int sess_cb_hit; /* session-id that was not in
859 * the cache was passed back via
860 * the callback. This indicates
861 * that the application is
862 * supplying session-id's from
863 * other processes - spooky
866 #ifdef TSAN_REQUIRES_LOCKING
867 CRYPTO_RWLOCK *tsan_lock;
870 CRYPTO_REF_COUNT references;
872 /* if defined, these override the X509_verify_cert() calls */
873 int (*app_verify_callback) (X509_STORE_CTX *, void *);
874 void *app_verify_arg;
876 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
877 * ('app_verify_callback' was called with just one argument)
880 /* Default password callback. */
881 pem_password_cb *default_passwd_callback;
883 /* Default password callback user data. */
884 void *default_passwd_callback_userdata;
886 /* get client cert callback */
887 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
889 /* cookie generate callback */
890 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
891 unsigned int *cookie_len);
893 /* verify cookie callback */
894 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
895 unsigned int cookie_len);
897 /* TLS1.3 app-controlled cookie generate callback */
898 int (*gen_stateless_cookie_cb) (SSL *ssl, unsigned char *cookie,
901 /* TLS1.3 verify app-controlled cookie callback */
902 int (*verify_stateless_cookie_cb) (SSL *ssl, const unsigned char *cookie,
905 CRYPTO_EX_DATA ex_data;
907 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
908 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3-sha1' */
910 STACK_OF(X509) *extra_certs;
911 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
913 /* Default values used when no per-SSL value is defined follow */
915 /* used if SSL's info_callback is NULL */
916 void (*info_callback) (const SSL *ssl, int type, int val);
919 * What we put in certificate_authorities extension for TLS 1.3
920 * (ClientHello and CertificateRequest) or just client cert requests for
921 * earlier versions. If client_ca_names is populated then it is only used
922 * for client cert requests, and in preference to ca_names.
924 STACK_OF(X509_NAME) *ca_names;
925 STACK_OF(X509_NAME) *client_ca_names;
928 * Default values to use in SSL structures follow (these are copied by
934 int min_proto_version;
935 int max_proto_version;
936 size_t max_cert_list;
938 struct cert_st /* CERT */ *cert;
939 SSL_CERT_LOOKUP *ssl_cert_info;
942 /* callback that allows applications to peek at protocol messages */
943 ossl_msg_cb msg_callback;
944 void *msg_callback_arg;
946 uint32_t verify_mode;
947 size_t sid_ctx_length;
948 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
949 /* called 'verify_callback' in the SSL */
950 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
952 /* Default generate session ID callback. */
953 GEN_SESSION_CB generate_session_id;
955 X509_VERIFY_PARAM *param;
959 # ifndef OPENSSL_NO_CT
960 CTLOG_STORE *ctlog_store; /* CT Log Store */
962 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
963 * If they are not, the connection should be aborted.
965 ssl_ct_validation_cb ct_validation_callback;
966 void *ct_validation_callback_arg;
970 * If we're using more than one pipeline how should we divide the data
971 * up between the pipes?
973 size_t split_send_fragment;
975 * Maximum amount of data to send in one fragment. actual record size can
976 * be more than this due to padding and MAC overheads.
978 size_t max_send_fragment;
980 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
981 size_t max_pipelines;
983 /* The default read buffer length to use (0 means not set) */
984 size_t default_read_buf_len;
986 # ifndef OPENSSL_NO_ENGINE
988 * Engine to pass requests for client certs to
990 ENGINE *client_cert_engine;
993 /* ClientHello callback. Mostly for extensions, but not entirely. */
994 SSL_client_hello_cb_fn client_hello_cb;
995 void *client_hello_cb_arg;
997 /* TLS extensions. */
999 /* TLS extensions servername callback */
1000 int (*servername_cb) (SSL *, int *, void *);
1001 void *servername_arg;
1002 /* RFC 4507 session ticket keys */
1003 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
1004 SSL_CTX_EXT_SECURE *secure;
1005 # ifndef OPENSSL_NO_DEPRECATED_3_0
1006 /* Callback to support customisation of ticket key setting */
1007 int (*ticket_key_cb) (SSL *ssl,
1008 unsigned char *name, unsigned char *iv,
1009 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
1011 int (*ticket_key_evp_cb) (SSL *ssl,
1012 unsigned char *name, unsigned char *iv,
1013 EVP_CIPHER_CTX *ectx, EVP_MAC_CTX *hctx,
1016 /* certificate status request info */
1017 /* Callback for status request */
1018 int (*status_cb) (SSL *ssl, void *arg);
1020 /* ext status type used for CSR extension (OCSP Stapling) */
1022 /* RFC 4366 Maximum Fragment Length Negotiation */
1023 uint8_t max_fragment_len_mode;
1025 /* EC extension values inherited by SSL structure */
1026 size_t ecpointformats_len;
1027 unsigned char *ecpointformats;
1029 size_t supportedgroups_len;
1030 uint16_t *supportedgroups;
1032 uint16_t *supported_groups_default;
1033 size_t supported_groups_default_len;
1035 * ALPN information (we are in the process of transitioning from NPN to
1040 * For a server, this contains a callback function that allows the
1041 * server to select the protocol for the connection.
1042 * out: on successful return, this must point to the raw protocol
1043 * name (without the length prefix).
1044 * outlen: on successful return, this contains the length of |*out|.
1045 * in: points to the client's list of supported protocols in
1047 * inlen: the length of |in|.
1049 int (*alpn_select_cb) (SSL *s,
1050 const unsigned char **out,
1051 unsigned char *outlen,
1052 const unsigned char *in,
1053 unsigned int inlen, void *arg);
1054 void *alpn_select_cb_arg;
1057 * For a client, this contains the list of supported protocols in wire
1060 unsigned char *alpn;
1063 # ifndef OPENSSL_NO_NEXTPROTONEG
1064 /* Next protocol negotiation information */
1067 * For a server, this contains a callback function by which the set of
1068 * advertised protocols can be provided.
1070 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
1071 void *npn_advertised_cb_arg;
1073 * For a client, this contains a callback function that selects the next
1074 * protocol from the list provided by the server.
1076 SSL_CTX_npn_select_cb_func npn_select_cb;
1077 void *npn_select_cb_arg;
1080 unsigned char cookie_hmac_key[SHA256_DIGEST_LENGTH];
1083 # ifndef OPENSSL_NO_PSK
1084 SSL_psk_client_cb_func psk_client_callback;
1085 SSL_psk_server_cb_func psk_server_callback;
1087 SSL_psk_find_session_cb_func psk_find_session_cb;
1088 SSL_psk_use_session_cb_func psk_use_session_cb;
1090 # ifndef OPENSSL_NO_SRP
1091 SRP_CTX srp_ctx; /* ctx for SRP authentication */
1094 /* Shared DANE context */
1095 struct dane_ctx_st dane;
1097 # ifndef OPENSSL_NO_SRTP
1098 /* SRTP profiles we are willing to do from RFC 5764 */
1099 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1102 * Callback for disabling session caching and ticket support on a session
1103 * basis, depending on the chosen cipher.
1105 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1107 CRYPTO_RWLOCK *lock;
1110 * Callback for logging key material for use with debugging tools like
1111 * Wireshark. The callback should log `line` followed by a newline.
1113 SSL_CTX_keylog_cb_func keylog_callback;
1116 * The maximum number of bytes advertised in session tickets that can be
1117 * sent as early data.
1119 uint32_t max_early_data;
1122 * The maximum number of bytes of early data that a server will tolerate
1123 * (which should be at least as much as max_early_data).
1125 uint32_t recv_max_early_data;
1127 /* TLS1.3 padding callback */
1128 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1129 void *record_padding_arg;
1130 size_t block_padding;
1132 /* Session ticket appdata */
1133 SSL_CTX_generate_session_ticket_fn generate_ticket_cb;
1134 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb;
1135 void *ticket_cb_data;
1137 /* The number of TLS1.3 tickets to automatically send */
1140 /* Callback to determine if early_data is acceptable or not */
1141 SSL_allow_early_data_cb_fn allow_early_data_cb;
1142 void *allow_early_data_cb_data;
1144 /* Do we advertise Post-handshake auth support? */
1147 /* Callback for SSL async handling */
1148 SSL_async_callback_fn async_cb;
1153 int ssl_mac_pkey_id[SSL_MD_NUM_IDX];
1154 const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX];
1155 const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX];
1156 size_t ssl_mac_secret_size[SSL_MD_NUM_IDX];
1158 size_t tls12_sigalgs_len;
1159 /* Cache of all sigalgs we know and whether they are available or not */
1160 struct sigalg_lookup_st *sigalg_lookup_cache;
1161 /* List of all sigalgs (code points) available, incl. from providers */
1162 uint16_t *tls12_sigalgs;
1164 TLS_GROUP_INFO *group_list;
1165 size_t group_list_len;
1166 size_t group_list_max_len;
1168 TLS_SIGALG_INFO *sigalg_list;
1169 size_t sigalg_list_len;
1170 size_t sigalg_list_max_len;
1172 /* masks of disabled algorithms */
1173 uint32_t disabled_enc_mask;
1174 uint32_t disabled_mac_mask;
1175 uint32_t disabled_mkey_mask;
1176 uint32_t disabled_auth_mask;
1178 #ifndef OPENSSL_NO_COMP_ALG
1179 /* certificate compression preferences */
1180 int cert_comp_prefs[TLSEXT_comp_cert_limit];
1183 /* Certificate Type stuff - for RPK vs X.509 */
1184 unsigned char *client_cert_type;
1185 size_t client_cert_type_len;
1186 unsigned char *server_cert_type;
1187 size_t server_cert_type_len;
1190 typedef struct cert_pkey_st CERT_PKEY;
1192 #define SSL_TYPE_SSL_CONNECTION 0
1193 #define SSL_TYPE_QUIC_CONNECTION 1
1194 #define SSL_TYPE_QUIC_XSO 2
1199 const SSL_METHOD *defltmeth;
1200 const SSL_METHOD *method;
1201 CRYPTO_REF_COUNT references;
1202 CRYPTO_RWLOCK *lock;
1203 /* extra application data */
1204 CRYPTO_EX_DATA ex_data;
1207 struct ssl_connection_st {
1208 /* type identifier and common data */
1211 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1216 * There are 2 BIO's even though they are normally both the same. This
1217 * is so data can be read and written to different handlers
1219 /* used by SSL_read */
1221 /* used by SSL_write */
1223 /* used during session-id reuse to concatenate messages */
1226 * This holds a variable that indicates what we were doing when a 0 or -1
1227 * is returned. This is needed for non-blocking IO so we know what
1228 * request needs re-doing when in SSL_accept or SSL_connect
1231 int (*handshake_func) (SSL *);
1233 * Imagine that here's a boolean member "init" that is switched as soon
1234 * as SSL_set_{accept/connect}_state is called for the first time, so
1235 * that "state" and "handshake_func" are properly initialized. But as
1236 * handshake_func is == 0 until then, we use this test instead of an
1239 /* are we the server side? */
1242 * Generate a new session or reuse an old one.
1243 * NB: For servers, the 'new' session may actually be a previously
1244 * cached session or even the previous session unless
1245 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1248 /* don't send shutdown packets */
1250 /* we have shut things down, 0x01 sent, 0x02 for received */
1252 /* Timestamps used to calculate the handshake RTT */
1253 OSSL_TIME ts_msg_write;
1254 OSSL_TIME ts_msg_read;
1257 SSL_EARLY_DATA_STATE early_data_state;
1258 BUF_MEM *init_buf; /* buffer used during init */
1259 void *init_msg; /* pointer to handshake message body, set by
1260 * ssl3_get_message() */
1261 size_t init_num; /* amount read/written */
1262 size_t init_off; /* amount read/written */
1264 size_t ssl_pkey_num;
1268 unsigned char server_random[SSL3_RANDOM_SIZE];
1269 unsigned char client_random[SSL3_RANDOM_SIZE];
1271 /* used during startup, digest all incoming/outgoing packets */
1272 BIO *handshake_buffer;
1274 * When handshake digest is determined, buffer is hashed and
1275 * freed and MD_CTX for the required digest is stored here.
1277 EVP_MD_CTX *handshake_dgst;
1279 * Set whenever an expected ChangeCipherSpec message is processed.
1280 * Unset when the peer's Finished message is received.
1281 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1283 int change_cipher_spec;
1287 * we allow one fatal and one warning alert to be outstanding, send close
1288 * alert via the warning alert
1291 unsigned char send_alert[2];
1293 * This flag is set when we should renegotiate ASAP, basically when there
1294 * is no more data in the read or write buffers
1297 int total_renegotiations;
1298 int num_renegotiations;
1299 int in_read_app_data;
1302 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1303 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1304 size_t finish_md_len;
1305 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1306 size_t peer_finish_md_len;
1307 size_t message_size;
1309 /* used to hold the new cipher we are going to use */
1310 const SSL_CIPHER *new_cipher;
1311 EVP_PKEY *pkey; /* holds short lived key exchange key */
1312 /* used for certificate requests */
1314 /* Certificate types in certificate request message. */
1317 /* Certificate authorities list peer sent */
1318 STACK_OF(X509_NAME) *peer_ca_names;
1319 size_t key_block_length;
1320 unsigned char *key_block;
1321 const EVP_CIPHER *new_sym_enc;
1322 const EVP_MD *new_hash;
1323 int new_mac_pkey_type;
1324 size_t new_mac_secret_size;
1325 # ifndef OPENSSL_NO_COMP
1326 const SSL_COMP *new_compression;
1328 char *new_compression;
1331 /* Raw values of the cipher list from a client */
1332 unsigned char *ciphers_raw;
1333 size_t ciphers_rawlen;
1334 /* Temporary storage for premaster secret */
1337 # ifndef OPENSSL_NO_PSK
1338 /* Temporary storage for PSK key */
1342 /* Signature algorithm we actually use */
1343 const struct sigalg_lookup_st *sigalg;
1344 /* Pointer to certificate we use */
1347 * signature algorithms peer reports: e.g. supported signature
1348 * algorithms extension for server or as part of a certificate
1349 * request for client.
1350 * Keep track of the algorithms for TLS and X.509 usage separately.
1352 uint16_t *peer_sigalgs;
1353 uint16_t *peer_cert_sigalgs;
1354 /* Size of above arrays */
1355 size_t peer_sigalgslen;
1356 size_t peer_cert_sigalgslen;
1357 /* Sigalg peer actually uses */
1358 const struct sigalg_lookup_st *peer_sigalg;
1360 * Set if corresponding CERT_PKEY can be used with current
1361 * SSL session: e.g. appropriate curve, signature algorithms etc.
1362 * If zero it can't be used at all.
1364 uint32_t *valid_flags;
1366 * For servers the following masks are for the key and auth algorithms
1367 * that are supported by the certs below. For clients they are masks of
1368 * *disabled* algorithms based on the current session.
1373 * The following are used by the client to see if a cipher is allowed or
1374 * not. It contains the minimum and maximum version the client's using
1375 * based on what it knows so far.
1381 /* Connection binding to prevent renegotiation attacks */
1382 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1383 size_t previous_client_finished_len;
1384 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1385 size_t previous_server_finished_len;
1386 int send_connection_binding;
1388 # ifndef OPENSSL_NO_NEXTPROTONEG
1390 * Set if we saw the Next Protocol Negotiation extension from our peer.
1396 * ALPN information (we are in the process of transitioning from NPN to
1401 * In a server these point to the selected ALPN protocol after the
1402 * ClientHello has been processed. In a client these contain the protocol
1403 * that the server selected once the ServerHello has been processed.
1405 unsigned char *alpn_selected;
1406 size_t alpn_selected_len;
1407 /* used by the server to know what options were proposed */
1408 unsigned char *alpn_proposed;
1409 size_t alpn_proposed_len;
1410 /* used by the client to know if it actually sent alpn */
1414 * This is set to true if we believe that this is a version of Safari
1415 * running on OS X 10.6 or newer. We wish to know this because Safari on
1416 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1418 char is_probably_safari;
1421 * Track whether we did a key exchange this handshake or not, so
1422 * SSL_get_negotiated_group() knows whether to fall back to the
1423 * value in the SSL_SESSION.
1426 /* For clients: peer temporary key */
1427 /* The group_id for the key exchange key */
1433 struct dtls1_state_st *d1; /* DTLSv1 variables */
1434 /* callback that allows applications to peek at protocol messages */
1435 void (*msg_callback) (int write_p, int version, int content_type,
1436 const void *buf, size_t len, SSL *ssl, void *arg);
1437 void *msg_callback_arg;
1438 int hit; /* reusing a previous session */
1439 X509_VERIFY_PARAM *param;
1440 /* Per connection DANE state */
1443 STACK_OF(SSL_CIPHER) *peer_ciphers;
1444 STACK_OF(SSL_CIPHER) *cipher_list;
1445 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1446 /* TLSv1.3 specific ciphersuites */
1447 STACK_OF(SSL_CIPHER) *tls13_ciphersuites;
1449 * These are the ones being used, the ones in SSL_SESSION are the ones to
1450 * be 'copied' into these ones
1454 * The TLS1.3 secrets.
1456 unsigned char early_secret[EVP_MAX_MD_SIZE];
1457 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1458 unsigned char master_secret[EVP_MAX_MD_SIZE];
1459 unsigned char resumption_master_secret[EVP_MAX_MD_SIZE];
1460 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1461 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1462 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1463 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1464 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1465 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1466 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1467 unsigned char early_exporter_master_secret[EVP_MAX_MD_SIZE];
1471 /* This is used to hold the server certificate used */
1472 struct cert_st /* CERT */ *cert;
1475 * The hash of all messages prior to the CertificateVerify, and the length
1478 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1479 size_t cert_verify_hash_len;
1481 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1482 enum {SSL_HRR_NONE = 0, SSL_HRR_PENDING, SSL_HRR_COMPLETE}
1483 hello_retry_request;
1486 * the session_id_context is used to ensure sessions are only reused in
1487 * the appropriate context
1489 size_t sid_ctx_length;
1490 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1491 /* This can also be in the session once a session is established */
1492 SSL_SESSION *session;
1493 /* TLSv1.3 PSK session */
1494 SSL_SESSION *psksession;
1495 unsigned char *psksession_id;
1496 size_t psksession_id_len;
1497 /* Default generate session ID callback. */
1498 GEN_SESSION_CB generate_session_id;
1500 * The temporary TLSv1.3 session id. This isn't really a session id at all
1501 * but is a random value sent in the legacy session id field.
1503 unsigned char tmp_session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
1504 size_t tmp_session_id_len;
1507 * 0 don't care about verify failure.
1508 * 1 fail if verify fails
1510 uint32_t verify_mode;
1511 /* fail if callback returns 0 */
1512 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1513 /* optional informational callback */
1514 void (*info_callback) (const SSL *ssl, int type, int val);
1515 /* error bytes to be written */
1519 # ifndef OPENSSL_NO_PSK
1520 SSL_psk_client_cb_func psk_client_callback;
1521 SSL_psk_server_cb_func psk_server_callback;
1523 SSL_psk_find_session_cb_func psk_find_session_cb;
1524 SSL_psk_use_session_cb_func psk_use_session_cb;
1526 /* Verified chain of peer */
1527 STACK_OF(X509) *verified_chain;
1530 * What we put in certificate_authorities extension for TLS 1.3
1531 * (ClientHello and CertificateRequest) or just client cert requests for
1532 * earlier versions. If client_ca_names is populated then it is only used
1533 * for client cert requests, and in preference to ca_names.
1535 STACK_OF(X509_NAME) *ca_names;
1536 STACK_OF(X509_NAME) *client_ca_names;
1537 /* protocol behaviour */
1541 int min_proto_version;
1542 int max_proto_version;
1543 size_t max_cert_list;
1546 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1547 * secret and SSLv3/TLS (<=1.2) rollback check
1551 * If we're using more than one pipeline how should we divide the data
1552 * up between the pipes?
1554 size_t split_send_fragment;
1556 * Maximum amount of data to send in one fragment. actual record size can
1557 * be more than this due to padding and MAC overheads.
1559 size_t max_send_fragment;
1560 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1561 size_t max_pipelines;
1564 /* Built-in extension flags */
1565 uint8_t extflags[TLSEXT_IDX_num_builtins];
1566 /* TLS extension debug callback */
1567 void (*debug_cb)(SSL *s, int client_server, int type,
1568 const unsigned char *data, int len, void *arg);
1571 /* certificate status request info */
1572 /* Status type or -1 if no status type */
1574 /* Raw extension data, if seen */
1575 unsigned char *scts;
1576 /* Length of raw extension data, if seen */
1578 /* Expect OCSP CertificateStatus message */
1579 int status_expected;
1582 /* OCSP status request only */
1583 STACK_OF(OCSP_RESPID) *ids;
1584 X509_EXTENSIONS *exts;
1585 /* OCSP response received or to be sent */
1586 unsigned char *resp;
1590 /* RFC4507 session ticket expected to be received or sent */
1591 int ticket_expected;
1592 /* TLS 1.3 tickets requested by the application. */
1593 int extra_tickets_expected;
1594 size_t ecpointformats_len;
1596 unsigned char *ecpointformats;
1598 size_t peer_ecpointformats_len;
1600 unsigned char *peer_ecpointformats;
1601 size_t supportedgroups_len;
1603 uint16_t *supportedgroups;
1605 size_t peer_supportedgroups_len;
1607 uint16_t *peer_supportedgroups;
1609 /* TLS Session Ticket extension override */
1610 TLS_SESSION_TICKET_EXT *session_ticket;
1611 /* TLS Session Ticket extension callback */
1612 tls_session_ticket_ext_cb_fn session_ticket_cb;
1613 void *session_ticket_cb_arg;
1614 /* TLS pre-shared secret session resumption */
1615 tls_session_secret_cb_fn session_secret_cb;
1616 void *session_secret_cb_arg;
1618 * For a client, this contains the list of supported protocols in wire
1621 unsigned char *alpn;
1624 * Next protocol negotiation. For the client, this is the protocol that
1625 * we sent in NextProtocol and is set when handling ServerHello
1626 * extensions. For a server, this is the client's selected_protocol from
1627 * NextProtocol and is set when handling the NextProtocol message, before
1628 * the Finished message.
1633 /* The available PSK key exchange modes */
1636 /* Set to one if we have negotiated ETM */
1639 /* Are we expecting to receive early data? */
1641 /* Is the session suitable for early data? */
1644 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1645 unsigned char *tls13_cookie;
1646 size_t tls13_cookie_len;
1647 /* Have we received a cookie from the client? */
1651 * Maximum Fragment Length as per RFC 4366.
1652 * If this member contains one of the allowed values (1-4)
1653 * then we should include Maximum Fragment Length Negotiation
1654 * extension in Client Hello.
1655 * Please note that value of this member does not have direct
1656 * effect. The actual (binding) value is stored in SSL_SESSION,
1657 * as this extension is optional on server side.
1659 uint8_t max_fragment_len_mode;
1662 * On the client side the number of ticket identities we sent in the
1663 * ClientHello. On the server side the identity of the ticket we
1668 /* This is the list of algorithms the peer supports that we also support */
1669 int compress_certificate_from_peer[TLSEXT_comp_cert_limit];
1670 /* indicate that we sent the extension, so we'll accept it */
1671 int compress_certificate_sent;
1673 uint8_t client_cert_type;
1674 uint8_t client_cert_type_ctos;
1675 uint8_t server_cert_type;
1676 uint8_t server_cert_type_ctos;
1680 * Parsed form of the ClientHello, kept around across client_hello_cb
1683 CLIENTHELLO_MSG *clienthello;
1686 * no further mod of servername
1687 * 0 : call the servername extension callback.
1688 * 1 : prepare 2, allow last ack just after in server callback.
1689 * 2 : don't call servername callback, no ack in server hello
1691 int servername_done;
1692 # ifndef OPENSSL_NO_CT
1694 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1695 * If they are not, the connection should be aborted.
1697 ssl_ct_validation_cb ct_validation_callback;
1698 /* User-supplied argument that is passed to the ct_validation_callback */
1699 void *ct_validation_callback_arg;
1701 * Consolidated stack of SCTs from all sources.
1702 * Lazily populated by CT_get_peer_scts(SSL*)
1704 STACK_OF(SCT) *scts;
1705 /* Have we attempted to find/parse SCTs yet? */
1708 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1709 # ifndef OPENSSL_NO_SRTP
1711 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1712 /* What's been chosen */
1713 SRTP_PROTECTION_PROFILE *srtp_profile;
1716 * 1 if we are renegotiating.
1717 * 2 if we are a server and are inside a handshake
1718 * (i.e. not just sending a HelloRequest)
1721 /* If sending a KeyUpdate is pending */
1723 /* Post-handshake authentication state */
1724 SSL_PHA_STATE post_handshake_auth;
1726 uint8_t* pha_context;
1727 size_t pha_context_len;
1729 EVP_MD_CTX *pha_dgst; /* this is just the digest through ClientFinished */
1731 # ifndef OPENSSL_NO_SRP
1732 /* ctx for SRP authentication */
1736 * Callback for disabling session caching and ticket support on a session
1737 * basis, depending on the chosen cipher.
1739 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1741 /* Record layer data */
1742 RECORD_LAYER rlayer;
1744 /* Default password callback. */
1745 pem_password_cb *default_passwd_callback;
1746 /* Default password callback user data. */
1747 void *default_passwd_callback_userdata;
1748 /* Async Job info */
1750 ASYNC_WAIT_CTX *waitctx;
1754 * The maximum number of bytes advertised in session tickets that can be
1755 * sent as early data.
1757 uint32_t max_early_data;
1759 * The maximum number of bytes of early data that a server will tolerate
1760 * (which should be at least as much as max_early_data).
1762 uint32_t recv_max_early_data;
1765 * The number of bytes of early data received so far. If we accepted early
1766 * data then this is a count of the plaintext bytes. If we rejected it then
1767 * this is a count of the ciphertext bytes.
1769 uint32_t early_data_count;
1771 /* The number of TLS1.3 tickets to automatically send */
1773 /* The number of TLS1.3 tickets actually sent so far */
1774 size_t sent_tickets;
1775 /* The next nonce value to use when we send a ticket on this connection */
1776 uint64_t next_ticket_nonce;
1778 /* Callback to determine if early_data is acceptable or not */
1779 SSL_allow_early_data_cb_fn allow_early_data_cb;
1780 void *allow_early_data_cb_data;
1782 /* Callback for SSL async handling */
1783 SSL_async_callback_fn async_cb;
1787 * Signature algorithms shared by client and server: cached because these
1788 * are used most often.
1790 const struct sigalg_lookup_st **shared_sigalgs;
1791 size_t shared_sigalgslen;
1793 #ifndef OPENSSL_NO_COMP_ALG
1794 /* certificate compression preferences */
1795 int cert_comp_prefs[TLSEXT_comp_cert_limit];
1798 /* Certificate Type stuff - for RPK vs X.509 */
1799 unsigned char *client_cert_type;
1800 size_t client_cert_type_len;
1801 unsigned char *server_cert_type;
1802 size_t server_cert_type_len;
1805 # define SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, c) \
1806 ((ssl) == NULL ? NULL \
1807 : ((ssl)->type == SSL_TYPE_SSL_CONNECTION \
1808 ? (c SSL_CONNECTION *)(ssl) \
1810 # define SSL_CONNECTION_NO_CONST
1811 # define SSL_CONNECTION_FROM_SSL_ONLY(ssl) \
1812 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, SSL_CONNECTION_NO_CONST)
1813 # define SSL_CONNECTION_FROM_CONST_SSL_ONLY(ssl) \
1814 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, const)
1815 # define SSL_CONNECTION_GET_CTX(sc) ((sc)->ssl.ctx)
1816 # define SSL_CONNECTION_GET_SSL(sc) (&(sc)->ssl)
1817 # ifndef OPENSSL_NO_QUIC
1818 # include "quic/quic_local.h"
1819 # define SSL_CONNECTION_FROM_SSL_int(ssl, c) \
1820 ((ssl) == NULL ? NULL \
1821 : ((ssl)->type == SSL_TYPE_SSL_CONNECTION \
1822 ? (c SSL_CONNECTION *)(ssl) \
1823 : ((ssl)->type == SSL_TYPE_QUIC_CONNECTION \
1824 ? (c SSL_CONNECTION *)((c QUIC_CONNECTION *)(ssl))->tls \
1826 # define SSL_CONNECTION_FROM_SSL(ssl) \
1827 SSL_CONNECTION_FROM_SSL_int(ssl, SSL_CONNECTION_NO_CONST)
1828 # define SSL_CONNECTION_FROM_CONST_SSL(ssl) \
1829 SSL_CONNECTION_FROM_SSL_int(ssl, const)
1831 # define SSL_CONNECTION_FROM_SSL(ssl) \
1832 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, SSL_CONNECTION_NO_CONST)
1833 # define SSL_CONNECTION_FROM_CONST_SSL(ssl) \
1834 SSL_CONNECTION_FROM_SSL_ONLY_int(ssl, const)
1838 * Structure containing table entry of values associated with the signature
1839 * algorithms (signature scheme) extension
1841 typedef struct sigalg_lookup_st {
1842 /* TLS 1.3 signature scheme name */
1844 /* Raw value used in extension */
1846 /* NID of hash algorithm or NID_undef if no hash */
1848 /* Index of hash algorithm or -1 if no hash algorithm */
1850 /* NID of signature algorithm */
1852 /* Index of signature algorithm */
1854 /* Combined hash and signature NID, if any */
1856 /* Required public key curve (ECDSA only) */
1858 /* Whether this signature algorithm is actually available for use */
1862 /* DTLS structures */
1864 # ifndef OPENSSL_NO_SCTP
1865 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1868 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1869 # define DTLS1_MAX_MTU_OVERHEAD 48
1872 * Flag used in message reuse to indicate the buffer contains the record
1873 * header as well as the handshake message header.
1875 # define DTLS1_SKIP_RECORD_HEADER 2
1877 struct dtls1_retransmit_state {
1878 const OSSL_RECORD_METHOD *wrlmethod;
1879 OSSL_RECORD_LAYER *wrl;
1882 struct hm_header_st {
1888 unsigned int is_ccs;
1889 struct dtls1_retransmit_state saved_retransmit_state;
1892 typedef struct hm_fragment_st {
1893 struct hm_header_st msg_header;
1894 unsigned char *fragment;
1895 unsigned char *reassembly;
1898 typedef struct pqueue_st pqueue;
1899 typedef struct pitem_st pitem;
1902 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1907 typedef struct pitem_st *piterator;
1909 pitem *pitem_new(unsigned char *prio64be, void *data);
1910 void pitem_free(pitem *item);
1911 pqueue *pqueue_new(void);
1912 void pqueue_free(pqueue *pq);
1913 pitem *pqueue_insert(pqueue *pq, pitem *item);
1914 pitem *pqueue_peek(pqueue *pq);
1915 pitem *pqueue_pop(pqueue *pq);
1916 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1917 pitem *pqueue_iterator(pqueue *pq);
1918 pitem *pqueue_next(piterator *iter);
1919 size_t pqueue_size(pqueue *pq);
1921 typedef struct dtls1_state_st {
1922 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1924 unsigned int cookie_verified;
1925 /* handshake message numbers */
1926 unsigned short handshake_write_seq;
1927 unsigned short next_handshake_write_seq;
1928 unsigned short handshake_read_seq;
1929 /* Buffered handshake messages */
1930 pqueue *buffered_messages;
1931 /* Buffered (sent) handshake records */
1932 pqueue *sent_messages;
1933 size_t link_mtu; /* max on-the-wire DTLS packet size */
1934 size_t mtu; /* max DTLS packet size */
1935 struct hm_header_st w_msg_hdr;
1936 struct hm_header_st r_msg_hdr;
1937 /* Number of alerts received so far */
1938 unsigned int timeout_num_alerts;
1940 * Indicates when the last handshake msg sent will timeout
1942 OSSL_TIME next_timeout;
1943 /* Timeout duration */
1944 unsigned int timeout_duration_us;
1946 unsigned int retransmitting;
1947 # ifndef OPENSSL_NO_SCTP
1948 int shutdown_received;
1951 DTLS_timer_cb timer_cb;
1956 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1958 # define EXPLICIT_PRIME_CURVE_TYPE 1
1959 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1960 # define NAMED_CURVE_TYPE 3
1962 # ifndef OPENSSL_NO_COMP_ALG
1963 struct ossl_comp_cert_st {
1964 unsigned char *data;
1967 CRYPTO_REF_COUNT references;
1968 CRYPTO_RWLOCK *lock;
1971 typedef struct ossl_comp_cert_st OSSL_COMP_CERT;
1973 void OSSL_COMP_CERT_free(OSSL_COMP_CERT *c);
1974 int OSSL_COMP_CERT_up_ref(OSSL_COMP_CERT *c);
1977 struct cert_pkey_st {
1979 EVP_PKEY *privatekey;
1980 /* Chain for this certificate */
1981 STACK_OF(X509) *chain;
1983 * serverinfo data for this certificate. The data is in TLS Extension
1984 * wire format, specifically it's a series of records like:
1985 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1987 * uint8_t data[length];
1989 unsigned char *serverinfo;
1990 size_t serverinfo_length;
1991 # ifndef OPENSSL_NO_COMP_ALG
1992 /* Compressed certificate data - index 0 is unused */
1993 OSSL_COMP_CERT *comp_cert[TLSEXT_comp_cert_limit];
1997 /* Retrieve Suite B flags */
1998 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1999 /* Uses to check strict mode: suite B modes are always strict */
2000 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
2001 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
2004 ENDPOINT_CLIENT = 0,
2011 unsigned short ext_type;
2013 /* The context which this extension applies to */
2014 unsigned int context;
2016 * Per-connection flags relating to this extension type: not used if
2017 * part of an SSL_CTX structure.
2020 SSL_custom_ext_add_cb_ex add_cb;
2021 SSL_custom_ext_free_cb_ex free_cb;
2023 SSL_custom_ext_parse_cb_ex parse_cb;
2025 } custom_ext_method;
2027 /* ext_flags values */
2030 * Indicates an extension has been received. Used to check for unsolicited or
2031 * duplicate extensions.
2033 # define SSL_EXT_FLAG_RECEIVED 0x1
2035 * Indicates an extension has been sent: used to enable sending of
2036 * corresponding ServerHello extension.
2038 # define SSL_EXT_FLAG_SENT 0x2
2041 custom_ext_method *meths;
2043 } custom_ext_methods;
2045 typedef struct cert_st {
2046 /* Current active set */
2048 * ALWAYS points to an element of the pkeys array
2049 * Probably it would make more sense to store
2050 * an index, not a pointer.
2055 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
2057 /* Flags related to certificates */
2058 uint32_t cert_flags;
2060 size_t ssl_pkey_num;
2061 /* Custom certificate types sent in certificate request message. */
2065 * supported signature algorithms. When set on a client this is sent in
2066 * the client hello as the supported signature algorithms extension. For
2067 * servers it represents the signature algorithms we are willing to use.
2069 uint16_t *conf_sigalgs;
2070 /* Size of above array */
2071 size_t conf_sigalgslen;
2073 * Client authentication signature algorithms, if not set then uses
2074 * conf_sigalgs. On servers these will be the signature algorithms sent
2075 * to the client in a certificate request for TLS 1.2. On a client this
2076 * represents the signature algorithms we are willing to use for client
2079 uint16_t *client_sigalgs;
2080 /* Size of above array */
2081 size_t client_sigalgslen;
2083 * Certificate setup callback: if set is called whenever a certificate
2084 * may be required (client or server). the callback can then examine any
2085 * appropriate parameters and setup any certificates required. This
2086 * allows advanced applications to select certificates on the fly: for
2087 * example based on supported signature algorithms or curves.
2089 int (*cert_cb) (SSL *ssl, void *arg);
2092 * Optional X509_STORE for chain building or certificate validation If
2093 * NULL the parent SSL_CTX store is used instead.
2095 X509_STORE *chain_store;
2096 X509_STORE *verify_store;
2097 /* Custom extensions */
2098 custom_ext_methods custext;
2099 /* Security callback */
2100 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
2101 void *other, void *ex);
2102 /* Security level */
2105 # ifndef OPENSSL_NO_PSK
2106 /* If not NULL psk identity hint to use for servers */
2107 char *psk_identity_hint;
2109 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
2110 CRYPTO_RWLOCK *lock;
2113 # define FP_ICC (int (*)(const void *,const void *))
2116 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
2117 * of a mess of functions, but hell, think of it as an opaque structure :-)
2119 typedef struct ssl3_enc_method {
2120 int (*setup_key_block) (SSL_CONNECTION *);
2121 int (*generate_master_secret) (SSL_CONNECTION *, unsigned char *,
2122 unsigned char *, size_t, size_t *);
2123 int (*change_cipher_state) (SSL_CONNECTION *, int);
2124 size_t (*final_finish_mac) (SSL_CONNECTION *, const char *, size_t,
2126 const char *client_finished_label;
2127 size_t client_finished_label_len;
2128 const char *server_finished_label;
2129 size_t server_finished_label_len;
2130 int (*alert_value) (int);
2131 int (*export_keying_material) (SSL_CONNECTION *, unsigned char *, size_t,
2132 const char *, size_t,
2133 const unsigned char *, size_t,
2135 /* Various flags indicating protocol version requirements */
2137 /* Set the handshake header */
2138 int (*set_handshake_header) (SSL_CONNECTION *s, WPACKET *pkt, int type);
2139 /* Close construction of the handshake message */
2140 int (*close_construct_packet) (SSL_CONNECTION *s, WPACKET *pkt, int htype);
2141 /* Write out handshake message */
2142 int (*do_write) (SSL_CONNECTION *s);
2145 # define ssl_set_handshake_header(s, pkt, htype) \
2146 SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
2147 # define ssl_close_construct_packet(s, pkt, htype) \
2148 SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
2149 # define ssl_do_write(s) SSL_CONNECTION_GET_SSL(s)->method->ssl3_enc->do_write(s)
2151 /* Values for enc_flags */
2153 /* Uses explicit IV for CBC mode */
2154 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
2155 /* Uses signature algorithms extension */
2156 # define SSL_ENC_FLAG_SIGALGS 0x2
2157 /* Uses SHA256 default PRF */
2158 # define SSL_ENC_FLAG_SHA256_PRF 0x4
2160 # define SSL_ENC_FLAG_DTLS 0x8
2162 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
2163 * apply to others in future.
2165 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2167 # ifndef OPENSSL_NO_COMP
2168 /* Used for holding the relevant compression methods loaded into SSL_CTX */
2169 typedef struct ssl3_comp_st {
2170 int comp_id; /* The identifier byte for this compression
2172 char *name; /* Text name used for the compression type */
2173 COMP_METHOD *method; /* The method :-) */
2177 typedef enum downgrade_en {
2184 * Dummy status type for the status_type extension. Indicates no status type
2187 #define TLSEXT_STATUSTYPE_nothing -1
2189 /* Sigalgs values */
2190 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2191 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2192 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2193 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2194 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2195 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2196 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2197 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2198 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2199 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2200 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2201 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2202 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2203 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2204 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2205 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2206 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2207 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2208 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2209 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2210 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2211 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840
2212 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841
2213 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2214 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2215 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2217 #define TLSEXT_SIGALG_ed25519 0x0807
2218 #define TLSEXT_SIGALG_ed448 0x0808
2219 #define TLSEXT_SIGALG_ecdsa_brainpoolP256r1_sha256 0x081a
2220 #define TLSEXT_SIGALG_ecdsa_brainpoolP384r1_sha384 0x081b
2221 #define TLSEXT_SIGALG_ecdsa_brainpoolP512r1_sha512 0x081c
2223 /* Known PSK key exchange modes */
2224 #define TLSEXT_KEX_MODE_KE 0x00
2225 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2228 * Internal representations of key exchange modes
2230 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2231 #define TLSEXT_KEX_MODE_FLAG_KE 1
2232 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2234 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
2235 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2237 /* A dummy signature value not valid for TLSv1.2 signature algs */
2238 #define TLSEXT_signature_rsa_pss 0x0101
2240 /* TLSv1.3 downgrade protection sentinel values */
2241 extern const unsigned char tls11downgrade[8];
2242 extern const unsigned char tls12downgrade[8];
2244 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
2246 __owur const SSL_METHOD *ssl_bad_method(int ver);
2247 __owur const SSL_METHOD *sslv3_method(void);
2248 __owur const SSL_METHOD *sslv3_server_method(void);
2249 __owur const SSL_METHOD *sslv3_client_method(void);
2250 __owur const SSL_METHOD *tlsv1_method(void);
2251 __owur const SSL_METHOD *tlsv1_server_method(void);
2252 __owur const SSL_METHOD *tlsv1_client_method(void);
2253 __owur const SSL_METHOD *tlsv1_1_method(void);
2254 __owur const SSL_METHOD *tlsv1_1_server_method(void);
2255 __owur const SSL_METHOD *tlsv1_1_client_method(void);
2256 __owur const SSL_METHOD *tlsv1_2_method(void);
2257 __owur const SSL_METHOD *tlsv1_2_server_method(void);
2258 __owur const SSL_METHOD *tlsv1_2_client_method(void);
2259 __owur const SSL_METHOD *tlsv1_3_method(void);
2260 __owur const SSL_METHOD *tlsv1_3_server_method(void);
2261 __owur const SSL_METHOD *tlsv1_3_client_method(void);
2262 __owur const SSL_METHOD *dtlsv1_method(void);
2263 __owur const SSL_METHOD *dtlsv1_server_method(void);
2264 __owur const SSL_METHOD *dtlsv1_client_method(void);
2265 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
2266 __owur const SSL_METHOD *dtlsv1_2_method(void);
2267 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
2268 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
2270 extern const SSL3_ENC_METHOD TLSv1_enc_data;
2271 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
2272 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
2273 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
2274 extern const SSL3_ENC_METHOD SSLv3_enc_data;
2275 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
2276 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
2279 * Flags for SSL methods
2281 # define SSL_METHOD_NO_FIPS (1U<<0)
2282 # define SSL_METHOD_NO_SUITEB (1U<<1)
2284 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2285 s_connect, enc_data) \
2286 const SSL_METHOD *func_name(void) \
2288 static const SSL_METHOD func_name##_data= { \
2292 ossl_ssl_connection_new, \
2293 ossl_ssl_connection_free, \
2294 ossl_ssl_connection_reset, \
2305 ssl3_renegotiate_check, \
2308 ssl3_dispatch_alert, \
2311 ssl3_get_cipher_by_char, \
2312 ssl3_put_cipher_by_char, \
2316 tls1_default_timeout, \
2318 ssl_undefined_void_function, \
2319 ssl3_callback_ctrl, \
2320 ssl3_ctx_callback_ctrl, \
2322 return &func_name##_data; \
2325 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2326 const SSL_METHOD *func_name(void) \
2328 static const SSL_METHOD func_name##_data= { \
2330 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2332 ossl_ssl_connection_new, \
2333 ossl_ssl_connection_free, \
2334 ossl_ssl_connection_reset, \
2345 ssl3_renegotiate_check, \
2348 ssl3_dispatch_alert, \
2351 ssl3_get_cipher_by_char, \
2352 ssl3_put_cipher_by_char, \
2356 ssl3_default_timeout, \
2358 ssl_undefined_void_function, \
2359 ssl3_callback_ctrl, \
2360 ssl3_ctx_callback_ctrl, \
2362 return &func_name##_data; \
2365 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2366 s_connect, enc_data) \
2367 const SSL_METHOD *func_name(void) \
2369 static const SSL_METHOD func_name##_data= { \
2373 ossl_ssl_connection_new, \
2374 ossl_ssl_connection_free, \
2375 ossl_ssl_connection_reset, \
2386 ssl3_renegotiate_check, \
2388 dtls1_write_app_data_bytes, \
2389 dtls1_dispatch_alert, \
2392 ssl3_get_cipher_by_char, \
2393 ssl3_put_cipher_by_char, \
2397 dtls1_default_timeout, \
2399 ssl_undefined_void_function, \
2400 ssl3_callback_ctrl, \
2401 ssl3_ctx_callback_ctrl, \
2403 return &func_name##_data; \
2406 struct openssl_ssl_test_functions {
2407 int (*p_ssl_init_wbio_buffer) (SSL_CONNECTION *s);
2410 const char *ssl_protocol_to_string(int version);
2412 static ossl_inline int tls12_rpk_and_privkey(const SSL_CONNECTION *sc, int idx)
2415 * This is to check for special cases when using RPK with just
2416 * a private key, and NO CERTIFICATE
2418 return ((sc->server && sc->ext.server_cert_type == TLSEXT_cert_type_rpk)
2419 || (!sc->server && sc->ext.client_cert_type == TLSEXT_cert_type_rpk))
2420 && sc->cert->pkeys[idx].privatekey != NULL
2421 && sc->cert->pkeys[idx].x509 == NULL;
2424 static ossl_inline int ssl_has_cert_type(const SSL_CONNECTION *sc, unsigned char ct)
2430 ptr = sc->server_cert_type;
2431 len = sc->server_cert_type_len;
2433 ptr = sc->client_cert_type;
2434 len = sc->client_cert_type_len;
2440 return memchr(ptr, ct, len) != NULL;
2443 /* Returns true if certificate and private key for 'idx' are present */
2444 static ossl_inline int ssl_has_cert(const SSL_CONNECTION *s, int idx)
2446 if (idx < 0 || idx >= (int)s->ssl_pkey_num)
2449 /* If RPK is enabled for this SSL... only require private key */
2450 if (ssl_has_cert_type(s, TLSEXT_cert_type_rpk))
2451 return s->cert->pkeys[idx].privatekey != NULL;
2453 return s->cert->pkeys[idx].x509 != NULL
2454 && s->cert->pkeys[idx].privatekey != NULL;
2457 static ossl_inline void tls1_get_peer_groups(SSL_CONNECTION *s,
2458 const uint16_t **pgroups,
2461 *pgroups = s->ext.peer_supportedgroups;
2462 *pgroupslen = s->ext.peer_supportedgroups_len;
2465 # ifndef OPENSSL_UNIT_TEST
2467 __owur int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method,
2469 __owur SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method);
2470 __owur SSL *ossl_ssl_connection_new(SSL_CTX *ctx);
2471 void ossl_ssl_connection_free(SSL *ssl);
2472 __owur int ossl_ssl_connection_reset(SSL *ssl);
2474 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2475 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2476 int ssl_clear_bad_session(SSL_CONNECTION *s);
2477 __owur CERT *ssl_cert_new(size_t ssl_pkey_num);
2478 __owur CERT *ssl_cert_dup(CERT *cert);
2479 void ssl_cert_clear_certs(CERT *c);
2480 void ssl_cert_free(CERT *c);
2481 __owur int ssl_generate_session_id(SSL_CONNECTION *s, SSL_SESSION *ss);
2482 __owur int ssl_get_new_session(SSL_CONNECTION *s, int session);
2483 __owur SSL_SESSION *lookup_sess_in_cache(SSL_CONNECTION *s,
2484 const unsigned char *sess_id,
2485 size_t sess_id_len);
2486 __owur int ssl_get_prev_session(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello);
2487 __owur SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket);
2488 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2489 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2490 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2491 const SSL_CIPHER *const *bp);
2492 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(SSL_CTX *ctx,
2493 STACK_OF(SSL_CIPHER) *tls13_ciphersuites,
2494 STACK_OF(SSL_CIPHER) **cipher_list,
2495 STACK_OF(SSL_CIPHER) **cipher_list_by_id,
2496 const char *rule_str,
2498 __owur int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites,
2500 __owur int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
2501 STACK_OF(SSL_CIPHER) **skp,
2502 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2504 void ssl_update_cache(SSL_CONNECTION *s, int mode);
2505 __owur int ssl_cipher_get_evp_cipher(SSL_CTX *ctx, const SSL_CIPHER *sslc,
2506 const EVP_CIPHER **enc);
2507 __owur int ssl_cipher_get_evp(SSL_CTX *ctxc, const SSL_SESSION *s,
2508 const EVP_CIPHER **enc, const EVP_MD **md,
2509 int *mac_pkey_type, size_t *mac_secret_size,
2510 SSL_COMP **comp, int use_etm);
2511 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2512 size_t *int_overhead, size_t *blocksize,
2513 size_t *ext_overhead);
2514 __owur int ssl_cert_is_disabled(SSL_CTX *ctx, size_t idx);
2515 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL_CONNECTION *ssl,
2516 const unsigned char *ptr,
2518 __owur int ssl_cert_set0_chain(SSL_CONNECTION *s, SSL_CTX *ctx,
2519 STACK_OF(X509) *chain);
2520 __owur int ssl_cert_set1_chain(SSL_CONNECTION *s, SSL_CTX *ctx,
2521 STACK_OF(X509) *chain);
2522 __owur int ssl_cert_add0_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x);
2523 __owur int ssl_cert_add1_chain_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x);
2524 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2525 __owur int ssl_cert_set_current(CERT *c, long arg);
2526 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2528 __owur int ssl_verify_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk);
2529 __owur int ssl_verify_rpk(SSL_CONNECTION *s, EVP_PKEY *rpk);
2530 __owur int ssl_build_cert_chain(SSL_CONNECTION *s, SSL_CTX *ctx, int flags);
2531 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2533 __owur int ssl_cert_get_cert_store(CERT *c, X509_STORE **pstore, int chain);
2535 __owur int ssl_security(const SSL_CONNECTION *s, int op, int bits, int nid,
2537 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2539 int ssl_get_security_level_bits(const SSL *s, const SSL_CTX *ctx, int *levelp);
2541 __owur int ssl_cert_lookup_by_nid(int nid, size_t *pidx, SSL_CTX *ctx);
2542 __owur SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2545 __owur SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx, SSL_CTX *ctx);
2547 int ssl_undefined_function(SSL *s);
2548 __owur int ssl_undefined_void_function(void);
2549 __owur int ssl_undefined_const_function(const SSL *s);
2550 __owur int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
2551 const unsigned char **serverinfo,
2552 size_t *serverinfo_length);
2553 void ssl_set_masks(SSL_CONNECTION *s);
2554 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *sc);
2555 __owur int ssl_x509err2alert(int type);
2556 void ssl_sort_cipher_list(void);
2557 int ssl_load_ciphers(SSL_CTX *ctx);
2558 __owur int ssl_setup_sigalgs(SSL_CTX *ctx);
2559 int ssl_load_groups(SSL_CTX *ctx);
2560 int ssl_load_sigalgs(SSL_CTX *ctx);
2561 __owur int ssl_fill_hello_random(SSL_CONNECTION *s, int server,
2562 unsigned char *field, size_t len,
2564 __owur int ssl_generate_master_secret(SSL_CONNECTION *s, unsigned char *pms,
2565 size_t pmslen, int free_pms);
2566 __owur EVP_PKEY *ssl_generate_pkey(SSL_CONNECTION *s, EVP_PKEY *pm);
2567 __owur int ssl_gensecret(SSL_CONNECTION *s, unsigned char *pms, size_t pmslen);
2568 __owur int ssl_derive(SSL_CONNECTION *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2570 __owur int ssl_decapsulate(SSL_CONNECTION *s, EVP_PKEY *privkey,
2571 const unsigned char *ct, size_t ctlen,
2573 __owur int ssl_encapsulate(SSL_CONNECTION *s, EVP_PKEY *pubkey,
2574 unsigned char **ctp, size_t *ctlenp,
2576 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2577 __owur int ssl_set_tmp_ecdh_groups(uint16_t **pext, size_t *pextlen,
2579 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc);
2580 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc);
2582 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2583 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2584 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2585 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2587 int ssl3_init_finished_mac(SSL_CONNECTION *s);
2588 __owur int ssl3_setup_key_block(SSL_CONNECTION *s);
2589 __owur int ssl3_change_cipher_state(SSL_CONNECTION *s, int which);
2590 void ssl3_cleanup_key_block(SSL_CONNECTION *s);
2591 __owur int ssl3_do_write(SSL_CONNECTION *s, int type);
2592 int ssl3_send_alert(SSL_CONNECTION *s, int level, int desc);
2593 __owur int ssl3_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2594 unsigned char *p, size_t len,
2595 size_t *secret_size);
2596 __owur int ssl3_get_req_cert_type(SSL_CONNECTION *s, WPACKET *pkt);
2597 __owur int ssl3_num_ciphers(void);
2598 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2599 int ssl3_renegotiate(SSL *ssl);
2600 int ssl3_renegotiate_check(SSL *ssl, int initok);
2601 void ssl3_digest_master_key_set_params(const SSL_SESSION *session,
2602 OSSL_PARAM params[]);
2603 __owur int ssl3_dispatch_alert(SSL *s);
2604 __owur size_t ssl3_final_finish_mac(SSL_CONNECTION *s, const char *sender,
2605 size_t slen, unsigned char *p);
2606 __owur int ssl3_finish_mac(SSL_CONNECTION *s, const unsigned char *buf,
2608 void ssl3_free_digest_list(SSL_CONNECTION *s);
2609 __owur unsigned long ssl3_output_cert_chain(SSL_CONNECTION *s, WPACKET *pkt,
2610 CERT_PKEY *cpk, int for_comp);
2611 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL_CONNECTION *s,
2612 STACK_OF(SSL_CIPHER) *clnt,
2613 STACK_OF(SSL_CIPHER) *srvr);
2614 __owur int ssl3_digest_cached_records(SSL_CONNECTION *s, int keep);
2615 __owur int ssl3_new(SSL *s);
2616 void ssl3_free(SSL *s);
2617 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2618 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2619 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2620 __owur int ssl3_shutdown(SSL *s);
2621 int ssl3_clear(SSL *s);
2622 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2623 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2624 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2625 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2627 __owur int ssl3_do_change_cipher_spec(SSL_CONNECTION *s);
2628 __owur OSSL_TIME ssl3_default_timeout(void);
2630 __owur int ssl3_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt,
2632 __owur int tls_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2633 __owur int tls_setup_handshake(SSL_CONNECTION *s);
2634 __owur int dtls1_set_handshake_header(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2635 __owur int dtls1_close_construct_packet(SSL_CONNECTION *s, WPACKET *pkt, int htype);
2636 __owur int ssl3_handshake_write(SSL_CONNECTION *s);
2638 __owur int ssl_allow_compression(SSL_CONNECTION *s);
2640 __owur int ssl_version_supported(const SSL_CONNECTION *s, int version,
2641 const SSL_METHOD **meth);
2643 __owur int ssl_set_client_hello_version(SSL_CONNECTION *s);
2644 __owur int ssl_check_version_downgrade(SSL_CONNECTION *s);
2645 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2646 __owur int ssl_choose_server_version(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello,
2648 __owur int ssl_choose_client_version(SSL_CONNECTION *s, int version,
2649 RAW_EXTENSION *extensions);
2650 __owur int ssl_get_min_max_version(const SSL_CONNECTION *s, int *min_version,
2651 int *max_version, int *real_max);
2653 __owur OSSL_TIME tls1_default_timeout(void);
2654 __owur int dtls1_do_write(SSL_CONNECTION *s, int type);
2655 void dtls1_set_message_header(SSL_CONNECTION *s,
2658 size_t frag_off, size_t frag_len);
2660 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2663 __owur int dtls1_read_failed(SSL_CONNECTION *s, int code);
2664 __owur int dtls1_buffer_message(SSL_CONNECTION *s, int ccs);
2665 __owur int dtls1_retransmit_message(SSL_CONNECTION *s, unsigned short seq,
2667 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2668 int dtls1_retransmit_buffered_messages(SSL_CONNECTION *s);
2669 void dtls1_clear_received_buffer(SSL_CONNECTION *s);
2670 void dtls1_clear_sent_buffer(SSL_CONNECTION *s);
2671 void dtls1_get_message_header(const unsigned char *data,
2672 struct hm_header_st *msg_hdr);
2673 __owur OSSL_TIME dtls1_default_timeout(void);
2674 __owur int dtls1_get_timeout(const SSL_CONNECTION *s, OSSL_TIME *timeleft);
2675 __owur int dtls1_check_timeout_num(SSL_CONNECTION *s);
2676 __owur int dtls1_handle_timeout(SSL_CONNECTION *s);
2677 void dtls1_start_timer(SSL_CONNECTION *s);
2678 void dtls1_stop_timer(SSL_CONNECTION *s);
2679 __owur int dtls1_is_timer_expired(SSL_CONNECTION *s);
2680 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2682 __owur size_t dtls1_min_mtu(SSL_CONNECTION *s);
2683 void dtls1_hm_fragment_free(hm_fragment *frag);
2684 __owur int dtls1_query_mtu(SSL_CONNECTION *s);
2686 __owur int tls1_new(SSL *s);
2687 void tls1_free(SSL *s);
2688 int tls1_clear(SSL *s);
2690 __owur int dtls1_new(SSL *s);
2691 void dtls1_free(SSL *s);
2692 int dtls1_clear(SSL *s);
2693 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2694 __owur int dtls1_shutdown(SSL *s);
2696 __owur int dtls1_dispatch_alert(SSL *s);
2698 __owur int ssl_init_wbio_buffer(SSL_CONNECTION *s);
2699 int ssl_free_wbio_buffer(SSL_CONNECTION *s);
2701 __owur int tls1_change_cipher_state(SSL_CONNECTION *s, int which);
2702 __owur int tls1_setup_key_block(SSL_CONNECTION *s);
2703 __owur size_t tls1_final_finish_mac(SSL_CONNECTION *s, const char *str,
2704 size_t slen, unsigned char *p);
2705 __owur int tls1_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2706 unsigned char *p, size_t len,
2707 size_t *secret_size);
2708 __owur int tls13_setup_key_block(SSL_CONNECTION *s);
2709 __owur size_t tls13_final_finish_mac(SSL_CONNECTION *s, const char *str, size_t slen,
2711 __owur int tls13_change_cipher_state(SSL_CONNECTION *s, int which);
2712 __owur int tls13_update_key(SSL_CONNECTION *s, int send);
2713 __owur int tls13_hkdf_expand(SSL_CONNECTION *s,
2715 const unsigned char *secret,
2716 const unsigned char *label, size_t labellen,
2717 const unsigned char *data, size_t datalen,
2718 unsigned char *out, size_t outlen, int fatal);
2719 __owur int tls13_hkdf_expand_ex(OSSL_LIB_CTX *libctx, const char *propq,
2721 const unsigned char *secret,
2722 const unsigned char *label, size_t labellen,
2723 const unsigned char *data, size_t datalen,
2724 unsigned char *out, size_t outlen,
2726 __owur int tls13_derive_key(SSL_CONNECTION *s, const EVP_MD *md,
2727 const unsigned char *secret, unsigned char *key,
2729 __owur int tls13_derive_iv(SSL_CONNECTION *s, const EVP_MD *md,
2730 const unsigned char *secret, unsigned char *iv,
2732 __owur int tls13_derive_finishedkey(SSL_CONNECTION *s, const EVP_MD *md,
2733 const unsigned char *secret,
2734 unsigned char *fin, size_t finlen);
2735 int tls13_generate_secret(SSL_CONNECTION *s, const EVP_MD *md,
2736 const unsigned char *prevsecret,
2737 const unsigned char *insecret,
2739 unsigned char *outsecret);
2740 __owur int tls13_generate_handshake_secret(SSL_CONNECTION *s,
2741 const unsigned char *insecret,
2742 size_t insecretlen);
2743 __owur int tls13_generate_master_secret(SSL_CONNECTION *s, unsigned char *out,
2744 unsigned char *prev, size_t prevlen,
2745 size_t *secret_size);
2746 __owur int tls1_export_keying_material(SSL_CONNECTION *s,
2747 unsigned char *out, size_t olen,
2748 const char *label, size_t llen,
2749 const unsigned char *p, size_t plen,
2751 __owur int tls13_export_keying_material(SSL_CONNECTION *s,
2752 unsigned char *out, size_t olen,
2753 const char *label, size_t llen,
2754 const unsigned char *context,
2755 size_t contextlen, int use_context);
2756 __owur int tls13_export_keying_material_early(SSL_CONNECTION *s,
2757 unsigned char *out, size_t olen,
2758 const char *label, size_t llen,
2759 const unsigned char *context,
2761 __owur int tls1_alert_code(int code);
2762 __owur int tls13_alert_code(int code);
2763 __owur int ssl3_alert_code(int code);
2765 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s);
2767 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2769 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(SSL_CTX *ctx, uint16_t curve_id);
2770 __owur int tls1_group_id2nid(uint16_t group_id, int include_unknown);
2771 __owur uint16_t tls1_nid2group_id(int nid);
2772 __owur int tls1_check_group_id(SSL_CONNECTION *s, uint16_t group_id,
2773 int check_own_curves);
2774 __owur uint16_t tls1_shared_group(SSL_CONNECTION *s, int nmatch);
2775 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2776 int *curves, size_t ncurves);
2777 __owur int tls1_set_groups_list(SSL_CTX *ctx, uint16_t **pext, size_t *pextlen,
2779 __owur EVP_PKEY *ssl_generate_pkey_group(SSL_CONNECTION *s, uint16_t id);
2780 __owur int tls_valid_group(SSL_CONNECTION *s, uint16_t group_id, int minversion,
2781 int maxversion, int isec, int *okfortls13);
2782 __owur EVP_PKEY *ssl_generate_param_group(SSL_CONNECTION *s, uint16_t id);
2783 void tls1_get_formatlist(SSL_CONNECTION *s, const unsigned char **pformats,
2784 size_t *num_formats);
2785 __owur int tls1_check_ec_tmp_key(SSL_CONNECTION *s, unsigned long id);
2787 __owur int tls_group_allowed(SSL_CONNECTION *s, uint16_t curve, int op);
2788 void tls1_get_supported_groups(SSL_CONNECTION *s, const uint16_t **pgroups,
2789 size_t *pgroupslen);
2791 __owur int tls1_set_server_sigalgs(SSL_CONNECTION *s);
2793 __owur SSL_TICKET_STATUS tls_get_ticket_from_client(SSL_CONNECTION *s,
2794 CLIENTHELLO_MSG *hello,
2796 __owur SSL_TICKET_STATUS tls_decrypt_ticket(SSL_CONNECTION *s,
2797 const unsigned char *etick,
2799 const unsigned char *sess_id,
2800 size_t sesslen, SSL_SESSION **psess);
2802 __owur int tls_use_ticket(SSL_CONNECTION *s);
2804 void ssl_set_sig_mask(uint32_t *pmask_a, SSL_CONNECTION *s, int op);
2806 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2807 __owur int tls1_set_raw_sigalgs(CERT *c, const uint16_t *psigs, size_t salglen,
2809 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2811 int tls1_check_chain(SSL_CONNECTION *s, X509 *x, EVP_PKEY *pk,
2812 STACK_OF(X509) *chain, int idx);
2813 void tls1_set_cert_validity(SSL_CONNECTION *s);
2815 # ifndef OPENSSL_NO_CT
2816 __owur int ssl_validate_ct(SSL_CONNECTION *s);
2819 __owur EVP_PKEY *ssl_get_auto_dh(SSL_CONNECTION *s);
2821 __owur int ssl_security_cert(SSL_CONNECTION *s, SSL_CTX *ctx, X509 *x, int vfy,
2823 __owur int ssl_security_cert_chain(SSL_CONNECTION *s, STACK_OF(X509) *sk,
2826 int tls_choose_sigalg(SSL_CONNECTION *s, int fatalerrs);
2828 __owur long ssl_get_algorithm2(SSL_CONNECTION *s);
2829 __owur int tls12_copy_sigalgs(SSL_CONNECTION *s, WPACKET *pkt,
2830 const uint16_t *psig, size_t psiglen);
2831 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2832 __owur int tls1_save_sigalgs(SSL_CONNECTION *s, PACKET *pkt, int cert);
2833 __owur int tls1_process_sigalgs(SSL_CONNECTION *s);
2834 __owur int tls1_set_peer_legacy_sigalg(SSL_CONNECTION *s, const EVP_PKEY *pkey);
2835 __owur int tls1_lookup_md(SSL_CTX *ctx, const SIGALG_LOOKUP *lu,
2836 const EVP_MD **pmd);
2837 __owur size_t tls12_get_psigalgs(SSL_CONNECTION *s, int sent,
2838 const uint16_t **psigs);
2839 __owur int tls_check_sigalg_curve(const SSL_CONNECTION *s, int curve);
2840 __owur int tls12_check_peer_sigalg(SSL_CONNECTION *s, uint16_t, EVP_PKEY *pkey);
2841 __owur int ssl_set_client_disabled(SSL_CONNECTION *s);
2842 __owur int ssl_cipher_disabled(const SSL_CONNECTION *s, const SSL_CIPHER *c,
2845 __owur int ssl_handshake_hash(SSL_CONNECTION *s,
2846 unsigned char *out, size_t outlen,
2848 __owur const EVP_MD *ssl_md(SSL_CTX *ctx, int idx);
2849 int ssl_get_md_idx(int md_nid);
2850 __owur const EVP_MD *ssl_handshake_md(SSL_CONNECTION *s);
2851 __owur const EVP_MD *ssl_prf_md(SSL_CONNECTION *s);
2854 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2855 * with |ssl|, if logging is enabled. It returns one on success and zero on
2856 * failure. The entry is identified by the first 8 bytes of
2857 * |encrypted_premaster|.
2859 __owur int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *s,
2860 const uint8_t *encrypted_premaster,
2861 size_t encrypted_premaster_len,
2862 const uint8_t *premaster,
2863 size_t premaster_len);
2866 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2867 * logging is available. It returns one on success and zero on failure. It tags
2868 * the entry with |label|.
2870 __owur int ssl_log_secret(SSL_CONNECTION *s, const char *label,
2871 const uint8_t *secret, size_t secret_len);
2873 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2874 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2875 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2876 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2877 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2878 #define CLIENT_APPLICATION_N_LABEL "CLIENT_TRAFFIC_SECRET_N"
2879 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2880 #define SERVER_APPLICATION_N_LABEL "SERVER_TRAFFIC_SECRET_N"
2881 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2882 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2884 __owur int srp_generate_server_master_secret(SSL_CONNECTION *s);
2885 __owur int srp_generate_client_master_secret(SSL_CONNECTION *s);
2886 __owur int srp_verify_server_param(SSL_CONNECTION *s);
2888 /* statem/statem_srvr.c */
2890 __owur int send_certificate_request(SSL_CONNECTION *s);
2892 /* statem/extensions_cust.c */
2894 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2895 ENDPOINT role, unsigned int ext_type,
2898 void custom_ext_init(custom_ext_methods *meths);
2900 int ossl_tls_add_custom_ext_intern(SSL_CTX *ctx, custom_ext_methods *exts,
2901 ENDPOINT role, unsigned int ext_type,
2902 unsigned int context,
2903 SSL_custom_ext_add_cb_ex add_cb,
2904 SSL_custom_ext_free_cb_ex free_cb,
2906 SSL_custom_ext_parse_cb_ex parse_cb,
2908 __owur int custom_ext_parse(SSL_CONNECTION *s, unsigned int context,
2909 unsigned int ext_type,
2910 const unsigned char *ext_data, size_t ext_size,
2911 X509 *x, size_t chainidx);
2912 __owur int custom_ext_add(SSL_CONNECTION *s, int context, WPACKET *pkt, X509 *x,
2913 size_t chainidx, int maxversion);
2915 __owur int custom_exts_copy(custom_ext_methods *dst,
2916 const custom_ext_methods *src);
2917 __owur int custom_exts_copy_flags(custom_ext_methods *dst,
2918 const custom_ext_methods *src);
2919 void custom_exts_free(custom_ext_methods *exts);
2921 void ssl_comp_free_compression_methods_int(void);
2924 void ssl_ctx_system_config(SSL_CTX *ctx);
2926 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
2928 const char *properties);
2929 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher);
2930 void ssl_evp_cipher_free(const EVP_CIPHER *cipher);
2931 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
2933 const char *properties);
2934 int ssl_evp_md_up_ref(const EVP_MD *md);
2935 void ssl_evp_md_free(const EVP_MD *md);
2937 int tls_provider_set_tls_params(SSL_CONNECTION *s, EVP_CIPHER_CTX *ctx,
2938 const EVP_CIPHER *ciph,
2941 void tls_engine_finish(ENGINE *e);
2942 const EVP_CIPHER *tls_get_cipher_from_engine(int nid);
2943 const EVP_MD *tls_get_digest_from_engine(int nid);
2944 int tls_engine_load_ssl_client_cert(SSL_CONNECTION *s, X509 **px509,
2946 int ssl_hmac_old_new(SSL_HMAC *ret);
2947 void ssl_hmac_old_free(SSL_HMAC *ctx);
2948 int ssl_hmac_old_init(SSL_HMAC *ctx, void *key, size_t len, char *md);
2949 int ssl_hmac_old_update(SSL_HMAC *ctx, const unsigned char *data, size_t len);
2950 int ssl_hmac_old_final(SSL_HMAC *ctx, unsigned char *md, size_t *len);
2951 size_t ssl_hmac_old_size(const SSL_HMAC *ctx);
2953 int ssl_ctx_srp_ctx_free_intern(SSL_CTX *ctx);
2954 int ssl_ctx_srp_ctx_init_intern(SSL_CTX *ctx);
2955 int ssl_srp_ctx_free_intern(SSL_CONNECTION *s);
2956 int ssl_srp_ctx_init_intern(SSL_CONNECTION *s);
2958 int ssl_srp_calc_a_param_intern(SSL_CONNECTION *s);
2959 int ssl_srp_server_param_with_username_intern(SSL_CONNECTION *s, int *ad);
2961 void ssl_session_calculate_timeout(SSL_SESSION *ss);
2963 # else /* OPENSSL_UNIT_TEST */
2965 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2969 /* Some helper routines to support TSAN operations safely */
2970 static ossl_unused ossl_inline int ssl_tsan_lock(const SSL_CTX *ctx)
2972 #ifdef TSAN_REQUIRES_LOCKING
2973 if (!CRYPTO_THREAD_write_lock(ctx->tsan_lock))
2979 static ossl_unused ossl_inline void ssl_tsan_unlock(const SSL_CTX *ctx)
2981 #ifdef TSAN_REQUIRES_LOCKING
2982 CRYPTO_THREAD_unlock(ctx->tsan_lock);
2986 static ossl_unused ossl_inline void ssl_tsan_counter(const SSL_CTX *ctx,
2987 TSAN_QUALIFIER int *stat)
2989 if (ssl_tsan_lock(ctx)) {
2991 ssl_tsan_unlock(ctx);
2995 int ossl_comp_has_alg(int a);
2996 size_t ossl_calculate_comp_expansion(int alg, size_t length);
2998 void ossl_ssl_set_custom_record_layer(SSL_CONNECTION *s,
2999 const OSSL_RECORD_METHOD *meth,