2 * Copyright 1995-2017 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 OpenSSL license (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 HEADER_SSL_LOCL_H
13 # define HEADER_SSL_LOCL_H
15 # include "e_os.h" /* struct timeval for DTLS */
21 # include <openssl/buffer.h>
22 # include <openssl/comp.h>
23 # include <openssl/bio.h>
24 # include <openssl/stack.h>
25 # include <openssl/rsa.h>
26 # include <openssl/dsa.h>
27 # include <openssl/err.h>
28 # include <openssl/ssl.h>
29 # include <openssl/async.h>
30 # include <openssl/symhacks.h>
31 # include <openssl/ct.h>
32 # include "record/record.h"
33 # include "statem/statem.h"
34 # include "packet_locl.h"
35 # include "internal/dane.h"
36 # include "internal/refcount.h"
38 # ifdef OPENSSL_BUILD_SHLIBSSL
39 # undef OPENSSL_EXTERN
40 # define OPENSSL_EXTERN OPENSSL_EXPORT
43 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
44 l|=(((unsigned long)(*((c)++)))<< 8), \
45 l|=(((unsigned long)(*((c)++)))<<16), \
46 l|=(((unsigned long)(*((c)++)))<<24))
48 /* NOTE - c is not incremented as per c2l */
49 # define c2ln(c,l1,l2,n) { \
53 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
54 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
55 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
56 case 5: l2|=((unsigned long)(*(--(c)))); \
57 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
58 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
59 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
60 case 1: l1|=((unsigned long)(*(--(c)))); \
64 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
65 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
66 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
67 *((c)++)=(unsigned char)(((l)>>24)&0xff))
69 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
70 l|=((unsigned long)(*((c)++)))<<16, \
71 l|=((unsigned long)(*((c)++)))<< 8, \
72 l|=((unsigned long)(*((c)++))))
74 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
75 l|=((uint64_t)(*((c)++)))<<48, \
76 l|=((uint64_t)(*((c)++)))<<40, \
77 l|=((uint64_t)(*((c)++)))<<32, \
78 l|=((uint64_t)(*((c)++)))<<24, \
79 l|=((uint64_t)(*((c)++)))<<16, \
80 l|=((uint64_t)(*((c)++)))<< 8, \
81 l|=((uint64_t)(*((c)++))))
84 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
85 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
86 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
87 *((c)++)=(unsigned char)(((l) )&0xff))
89 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
90 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
91 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
93 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
94 *((c)++)=(unsigned char)(((l) )&0xff))
96 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
97 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
98 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
102 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
103 *((c)++)=(unsigned char)(((l) )&0xff))
105 /* NOTE - c is not incremented as per l2c */
106 # define l2cn(l1,l2,c,n) { \
109 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
110 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
111 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
112 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
113 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
114 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
115 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
116 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
120 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
121 (((unsigned int)((c)[1])) )),(c)+=2)
122 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
123 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
125 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
126 (((unsigned long)((c)[1]))<< 8)| \
127 (((unsigned long)((c)[2])) )),(c)+=3)
129 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
130 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
131 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
134 * DTLS version numbers are strange because they're inverted. Except for
135 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
137 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
138 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
139 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
140 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
141 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
145 * Define the Bitmasks for SSL_CIPHER.algorithms.
146 * This bits are used packed as dense as possible. If new methods/ciphers
147 * etc will be added, the bits a likely to change, so this information
148 * is for internal library use only, even though SSL_CIPHER.algorithms
149 * can be publicly accessed.
150 * Use the according functions for cipher management instead.
152 * The bit mask handling in the selection and sorting scheme in
153 * ssl_create_cipher_list() has only limited capabilities, reflecting
154 * that the different entities within are mutually exclusive:
155 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
158 /* Bits for algorithm_mkey (key exchange algorithm) */
159 /* RSA key exchange */
160 # define SSL_kRSA 0x00000001U
161 /* tmp DH key no DH cert */
162 # define SSL_kDHE 0x00000002U
164 # define SSL_kEDH SSL_kDHE
166 # define SSL_kECDHE 0x00000004U
168 # define SSL_kEECDH SSL_kECDHE
170 # define SSL_kPSK 0x00000008U
171 /* GOST key exchange */
172 # define SSL_kGOST 0x00000010U
174 # define SSL_kSRP 0x00000020U
176 # define SSL_kRSAPSK 0x00000040U
177 # define SSL_kECDHEPSK 0x00000080U
178 # define SSL_kDHEPSK 0x00000100U
182 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
184 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
185 # define SSL_kANY 0x00000000U
187 /* Bits for algorithm_auth (server authentication) */
189 # define SSL_aRSA 0x00000001U
191 # define SSL_aDSS 0x00000002U
192 /* no auth (i.e. use ADH or AECDH) */
193 # define SSL_aNULL 0x00000004U
195 # define SSL_aECDSA 0x00000008U
197 # define SSL_aPSK 0x00000010U
198 /* GOST R 34.10-2001 signature auth */
199 # define SSL_aGOST01 0x00000020U
201 # define SSL_aSRP 0x00000040U
202 /* GOST R 34.10-2012 signature auth */
203 # define SSL_aGOST12 0x00000080U
204 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
205 # define SSL_aANY 0x00000000U
206 /* All bits requiring a certificate */
208 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
210 /* Bits for algorithm_enc (symmetric encryption) */
211 # define SSL_DES 0x00000001U
212 # define SSL_3DES 0x00000002U
213 # define SSL_RC4 0x00000004U
214 # define SSL_RC2 0x00000008U
215 # define SSL_IDEA 0x00000010U
216 # define SSL_eNULL 0x00000020U
217 # define SSL_AES128 0x00000040U
218 # define SSL_AES256 0x00000080U
219 # define SSL_CAMELLIA128 0x00000100U
220 # define SSL_CAMELLIA256 0x00000200U
221 # define SSL_eGOST2814789CNT 0x00000400U
222 # define SSL_SEED 0x00000800U
223 # define SSL_AES128GCM 0x00001000U
224 # define SSL_AES256GCM 0x00002000U
225 # define SSL_AES128CCM 0x00004000U
226 # define SSL_AES256CCM 0x00008000U
227 # define SSL_AES128CCM8 0x00010000U
228 # define SSL_AES256CCM8 0x00020000U
229 # define SSL_eGOST2814789CNT12 0x00040000U
230 # define SSL_CHACHA20POLY1305 0x00080000U
231 # define SSL_ARIA128GCM 0x00100000U
232 # define SSL_ARIA256GCM 0x00200000U
234 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
235 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
236 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
237 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
238 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
239 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
240 # define SSL_ARIA (SSL_ARIAGCM)
242 /* Bits for algorithm_mac (symmetric authentication) */
244 # define SSL_MD5 0x00000001U
245 # define SSL_SHA1 0x00000002U
246 # define SSL_GOST94 0x00000004U
247 # define SSL_GOST89MAC 0x00000008U
248 # define SSL_SHA256 0x00000010U
249 # define SSL_SHA384 0x00000020U
250 /* Not a real MAC, just an indication it is part of cipher */
251 # define SSL_AEAD 0x00000040U
252 # define SSL_GOST12_256 0x00000080U
253 # define SSL_GOST89MAC12 0x00000100U
254 # define SSL_GOST12_512 0x00000200U
257 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
258 * sure to update this constant too
261 # define SSL_MD_MD5_IDX 0
262 # define SSL_MD_SHA1_IDX 1
263 # define SSL_MD_GOST94_IDX 2
264 # define SSL_MD_GOST89MAC_IDX 3
265 # define SSL_MD_SHA256_IDX 4
266 # define SSL_MD_SHA384_IDX 5
267 # define SSL_MD_GOST12_256_IDX 6
268 # define SSL_MD_GOST89MAC12_IDX 7
269 # define SSL_MD_GOST12_512_IDX 8
270 # define SSL_MD_MD5_SHA1_IDX 9
271 # define SSL_MD_SHA224_IDX 10
272 # define SSL_MD_SHA512_IDX 11
273 # define SSL_MAX_DIGEST 12
275 /* Bits for algorithm2 (handshake digests and other extra flags) */
277 /* Bits 0-7 are handshake MAC */
278 # define SSL_HANDSHAKE_MAC_MASK 0xFF
279 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
280 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
281 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
282 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
283 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
284 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
285 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
287 /* Bits 8-15 bits are PRF */
288 # define TLS1_PRF_DGST_SHIFT 8
289 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
290 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
291 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
292 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
293 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
294 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
295 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
298 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
299 * goes into algorithm2)
301 # define TLS1_STREAM_MAC 0x10000
303 # define SSL_STRONG_MASK 0x0000001FU
304 # define SSL_DEFAULT_MASK 0X00000020U
306 # define SSL_STRONG_NONE 0x00000001U
307 # define SSL_LOW 0x00000002U
308 # define SSL_MEDIUM 0x00000004U
309 # define SSL_HIGH 0x00000008U
310 # define SSL_FIPS 0x00000010U
311 # define SSL_NOT_DEFAULT 0x00000020U
313 /* we have used 0000003f - 26 bits left to go */
315 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
316 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
318 /* Check if an SSL structure is using DTLS */
319 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
321 /* Check if we are using TLSv1.3 */
322 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
323 && (s)->method->version >= TLS1_3_VERSION \
324 && (s)->method->version != TLS_ANY_VERSION)
326 # define SSL_TREAT_AS_TLS13(s) \
327 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
328 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY)
330 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0)
332 /* See if we need explicit IV */
333 # define SSL_USE_EXPLICIT_IV(s) \
334 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
336 * See if we use signature algorithms extension and signature algorithm
339 # define SSL_USE_SIGALGS(s) \
340 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
342 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
343 * apply to others in future.
345 # define SSL_USE_TLS1_2_CIPHERS(s) \
346 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
348 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
349 * flags because it may not be set to correct version yet.
351 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
352 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
353 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
355 * Determine if a client should send signature algorithms extension:
356 * as with TLS1.2 cipher we can't rely on method flags.
358 # define SSL_CLIENT_USE_SIGALGS(s) \
359 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
361 # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
362 # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
364 /* Mostly for SSLv3 */
365 # define SSL_PKEY_RSA 0
366 # define SSL_PKEY_RSA_PSS_SIGN 1
367 # define SSL_PKEY_DSA_SIGN 2
368 # define SSL_PKEY_ECC 3
369 # define SSL_PKEY_GOST01 4
370 # define SSL_PKEY_GOST12_256 5
371 # define SSL_PKEY_GOST12_512 6
372 # define SSL_PKEY_ED25519 7
373 # define SSL_PKEY_NUM 8
375 * Pseudo-constant. GOST cipher suites can use different certs for 1
376 * SSL_CIPHER. So let's see which one we have in fact.
378 # define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1
381 * SSL_kRSA <- RSA_ENC
382 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
383 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
384 * SSL_aRSA <- RSA_ENC | RSA_SIGN
385 * SSL_aDSS <- DSA_SIGN
389 #define CERT_INVALID 0
390 #define CERT_PUBLIC_KEY 1
391 #define CERT_PRIVATE_KEY 2
394 /* CipherSuite length. SSLv3 and all TLS versions. */
395 # define TLS_CIPHER_LEN 2
396 /* used to hold info on the particular ciphers used */
397 struct ssl_cipher_st {
399 const char *name; /* text name */
400 const char *stdname; /* RFC name */
401 uint32_t id; /* id, 4 bytes, first is version */
403 * changed in 1.0.0: these four used to be portions of a single value
406 uint32_t algorithm_mkey; /* key exchange algorithm */
407 uint32_t algorithm_auth; /* server authentication */
408 uint32_t algorithm_enc; /* symmetric encryption */
409 uint32_t algorithm_mac; /* symmetric authentication */
410 int min_tls; /* minimum SSL/TLS protocol version */
411 int max_tls; /* maximum SSL/TLS protocol version */
412 int min_dtls; /* minimum DTLS protocol version */
413 int max_dtls; /* maximum DTLS protocol version */
414 uint32_t algo_strength; /* strength and export flags */
415 uint32_t algorithm2; /* Extra flags */
416 int32_t strength_bits; /* Number of bits really used */
417 uint32_t alg_bits; /* Number of bits for algorithm */
420 /* Used to hold SSL/TLS functions */
421 struct ssl_method_st {
425 int (*ssl_new) (SSL *s);
426 int (*ssl_clear) (SSL *s);
427 void (*ssl_free) (SSL *s);
428 int (*ssl_accept) (SSL *s);
429 int (*ssl_connect) (SSL *s);
430 int (*ssl_read) (SSL *s, void *buf, size_t len, size_t *readbytes);
431 int (*ssl_peek) (SSL *s, void *buf, size_t len, size_t *readbytes);
432 int (*ssl_write) (SSL *s, const void *buf, size_t len, size_t *written);
433 int (*ssl_shutdown) (SSL *s);
434 int (*ssl_renegotiate) (SSL *s);
435 int (*ssl_renegotiate_check) (SSL *s, int);
436 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
437 unsigned char *buf, size_t len, int peek,
439 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, size_t len,
441 int (*ssl_dispatch_alert) (SSL *s);
442 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
443 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
444 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
445 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, WPACKET *pkt,
447 size_t (*ssl_pending) (const SSL *s);
448 int (*num_ciphers) (void);
449 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
450 long (*get_timeout) (void);
451 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
452 int (*ssl_version) (void);
453 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
454 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
458 * Lets make this into an ASN.1 type structure as follows
459 * SSL_SESSION_ID ::= SEQUENCE {
460 * version INTEGER, -- structure version number
461 * SSLversion INTEGER, -- SSL version number
462 * Cipher OCTET STRING, -- the 3 byte cipher ID
463 * Session_ID OCTET STRING, -- the Session ID
464 * Master_key OCTET STRING, -- the master key
465 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
466 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
467 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
468 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
469 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
470 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
471 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
472 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
473 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
474 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
475 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
476 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
477 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
478 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
480 * Look in ssl/ssl_asn1.c for more details
481 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
483 struct ssl_session_st {
484 int ssl_version; /* what ssl version session info is being kept
486 size_t master_key_length;
488 /* TLSv1.3 early_secret used for external PSKs */
489 unsigned char early_secret[EVP_MAX_MD_SIZE];
491 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
494 unsigned char master_key[TLS13_MAX_RESUMPTION_MASTER_LENGTH];
495 /* session_id - valid? */
496 size_t session_id_length;
497 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
499 * this is used to determine whether the session is being reused in the
500 * appropriate context. It is up to the application to set this, via
503 size_t sid_ctx_length;
504 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
505 # ifndef OPENSSL_NO_PSK
506 char *psk_identity_hint;
510 * Used to indicate that session resumption is not allowed. Applications
511 * can also set this bit for a new session via not_resumable_session_cb
512 * to disable session caching and tickets.
515 /* This is the cert and type for the other end. */
518 /* Certificate chain peer sent. */
519 STACK_OF(X509) *peer_chain;
521 * when app_verify_callback accepts a session where the peer's
522 * certificate is not ok, we must remember the error for session reuse:
524 long verify_result; /* only for servers */
525 CRYPTO_REF_COUNT references;
528 unsigned int compress_meth; /* Need to lookup the method */
529 const SSL_CIPHER *cipher;
530 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used to
531 * load the 'cipher' structure */
532 STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
533 CRYPTO_EX_DATA ex_data; /* application specific data */
535 * These are used to make removal of session-ids more efficient and to
536 * implement a maximum cache size.
538 struct ssl_session_st *prev, *next;
542 # ifndef OPENSSL_NO_EC
543 size_t ecpointformats_len;
544 unsigned char *ecpointformats; /* peer's list */
545 size_t supportedgroups_len;
546 uint16_t *supportedgroups; /* peer's list */
547 # endif /* OPENSSL_NO_EC */
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 unsigned char *tick_nonce;
555 size_t tick_nonce_len;
557 /* Max number of bytes that can be sent as early data */
558 uint32_t max_early_data;
559 /* The ALPN protocol selected for this session */
560 unsigned char *alpn_selected;
561 size_t alpn_selected_len;
563 # ifndef OPENSSL_NO_SRP
570 /* Extended master secret support */
571 # define SSL_SESS_FLAG_EXTMS 0x1
573 # ifndef OPENSSL_NO_SRP
575 typedef struct srp_ctx_st {
576 /* param for all the callbacks */
578 /* set client Hello login callback */
579 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
580 /* set SRP N/g param callback for verification */
581 int (*SRP_verify_param_callback) (SSL *, void *);
582 /* set SRP client passwd callback */
583 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
585 BIGNUM *N, *g, *s, *B, *A;
589 unsigned long srp_Mask;
595 SSL_EARLY_DATA_NONE = 0,
596 SSL_EARLY_DATA_CONNECT_RETRY,
597 SSL_EARLY_DATA_CONNECTING,
598 SSL_EARLY_DATA_WRITE_RETRY,
599 SSL_EARLY_DATA_WRITING,
600 SSL_EARLY_DATA_UNAUTH_WRITING,
601 SSL_EARLY_DATA_FINISHED_WRITING,
602 SSL_EARLY_DATA_ACCEPT_RETRY,
603 SSL_EARLY_DATA_ACCEPTING,
604 SSL_EARLY_DATA_READ_RETRY,
605 SSL_EARLY_DATA_READING,
606 SSL_EARLY_DATA_FINISHED_READING
607 } SSL_EARLY_DATA_STATE;
610 * We check that the amount of unreadable early data doesn't exceed
611 * max_early_data. max_early_data is given in plaintext bytes. However if it is
612 * unreadable then we only know the number of ciphertext bytes. We also don't
613 * know how much the overhead should be because it depends on the ciphersuite.
614 * We make a small allowance. We assume 5 records of actual data plus the end
615 * of early data alert record. Each record has a tag and a content type byte.
616 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
617 * content of the alert record either which is 2 bytes.
619 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
622 * The allowance we have between the client's calculated ticket age and our own.
623 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
624 * client's age calculation is different by more than this than our own then we
625 * do not allow that ticket for early_data.
627 # define TICKET_AGE_ALLOWANCE (10 * 1000)
629 #define MAX_COMPRESSIONS_SIZE 255
637 typedef struct raw_extension_st {
638 /* Raw packet data for the extension */
640 /* Set to 1 if the extension is present or 0 otherwise */
642 /* Set to 1 if we have already parsed the extension or 0 otherwise */
644 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
646 /* Track what order extensions are received in (0-based). */
647 size_t received_order;
652 unsigned int legacy_version;
653 unsigned char random[SSL3_RANDOM_SIZE];
654 size_t session_id_len;
655 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
656 size_t dtls_cookie_len;
657 unsigned char dtls_cookie[DTLS1_COOKIE_LENGTH];
659 size_t compressions_len;
660 unsigned char compressions[MAX_COMPRESSIONS_SIZE];
662 size_t pre_proc_exts_len;
663 RAW_EXTENSION *pre_proc_exts;
667 * Extension index values NOTE: Any updates to these defines should be mirrored
668 * with equivalent updates to ext_defs in extensions.c
670 typedef enum tlsext_index_en {
671 TLSEXT_IDX_renegotiate,
672 TLSEXT_IDX_server_name,
674 TLSEXT_IDX_ec_point_formats,
675 TLSEXT_IDX_supported_groups,
676 TLSEXT_IDX_session_ticket,
677 TLSEXT_IDX_status_request,
678 TLSEXT_IDX_next_proto_neg,
679 TLSEXT_IDX_application_layer_protocol_negotiation,
681 TLSEXT_IDX_encrypt_then_mac,
682 TLSEXT_IDX_signed_certificate_timestamp,
683 TLSEXT_IDX_extended_master_secret,
684 TLSEXT_IDX_signature_algorithms,
685 TLSEXT_IDX_supported_versions,
686 TLSEXT_IDX_psk_kex_modes,
687 TLSEXT_IDX_key_share,
689 TLSEXT_IDX_cryptopro_bug,
690 TLSEXT_IDX_early_data,
691 TLSEXT_IDX_certificate_authorities,
694 /* Dummy index - must always be the last entry */
695 TLSEXT_IDX_num_builtins
698 DEFINE_LHASH_OF(SSL_SESSION);
699 /* Needed in ssl_cert.c */
700 DEFINE_LHASH_OF(X509_NAME);
702 # define TLSEXT_KEYNAME_LENGTH 16
705 const SSL_METHOD *method;
706 STACK_OF(SSL_CIPHER) *cipher_list;
707 /* same as above but sorted for lookup */
708 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
709 struct x509_store_st /* X509_STORE */ *cert_store;
710 LHASH_OF(SSL_SESSION) *sessions;
712 * Most session-ids that will be cached, default is
713 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
715 size_t session_cache_size;
716 struct ssl_session_st *session_cache_head;
717 struct ssl_session_st *session_cache_tail;
719 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
720 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
721 * means only SSL_accept which cache SSL_SESSIONS.
723 uint32_t session_cache_mode;
725 * If timeout is not 0, it is the default timeout value set when
726 * SSL_new() is called. This has been put in to make life easier to set
729 long session_timeout;
731 * If this callback is not null, it will be called each time a session id
732 * is added to the cache. If this function returns 1, it means that the
733 * callback will do a SSL_SESSION_free() when it has finished using it.
734 * Otherwise, on 0, it means the callback has finished with it. If
735 * remove_session_cb is not null, it will be called when a session-id is
736 * removed from the cache. After the call, OpenSSL will
737 * SSL_SESSION_free() it.
739 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
740 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
741 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
742 const unsigned char *data, int len,
745 int sess_connect; /* SSL new conn - started */
746 int sess_connect_renegotiate; /* SSL reneg - requested */
747 int sess_connect_good; /* SSL new conne/reneg - finished */
748 int sess_accept; /* SSL new accept - started */
749 int sess_accept_renegotiate; /* SSL reneg - requested */
750 int sess_accept_good; /* SSL accept/reneg - finished */
751 int sess_miss; /* session lookup misses */
752 int sess_timeout; /* reuse attempt on timeouted session */
753 int sess_cache_full; /* session removed due to full cache */
754 int sess_hit; /* session reuse actually done */
755 int sess_cb_hit; /* session-id that was not in the cache was
756 * passed back via the callback. This
757 * indicates that the application is supplying
758 * session-id's from other processes - spooky
762 CRYPTO_REF_COUNT references;
764 /* if defined, these override the X509_verify_cert() calls */
765 int (*app_verify_callback) (X509_STORE_CTX *, void *);
766 void *app_verify_arg;
768 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
769 * ('app_verify_callback' was called with just one argument)
772 /* Default password callback. */
773 pem_password_cb *default_passwd_callback;
775 /* Default password callback user data. */
776 void *default_passwd_callback_userdata;
778 /* get client cert callback */
779 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
781 /* cookie generate callback */
782 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
783 unsigned int *cookie_len);
785 /* verify cookie callback */
786 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
787 unsigned int cookie_len);
789 CRYPTO_EX_DATA ex_data;
791 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
792 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
794 STACK_OF(X509) *extra_certs;
795 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
797 /* Default values used when no per-SSL value is defined follow */
799 /* used if SSL's info_callback is NULL */
800 void (*info_callback) (const SSL *ssl, int type, int val);
803 * What we put in certificate_authorities extension for TLS 1.3
804 * (ClientHello and CertificateRequest) or just client cert requests for
807 STACK_OF(X509_NAME) *ca_names;
810 * Default values to use in SSL structures follow (these are copied by
816 int min_proto_version;
817 int max_proto_version;
818 size_t max_cert_list;
820 struct cert_st /* CERT */ *cert;
823 /* callback that allows applications to peek at protocol messages */
824 void (*msg_callback) (int write_p, int version, int content_type,
825 const void *buf, size_t len, SSL *ssl, void *arg);
826 void *msg_callback_arg;
828 uint32_t verify_mode;
829 size_t sid_ctx_length;
830 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
831 /* called 'verify_callback' in the SSL */
832 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
834 /* Default generate session ID callback. */
835 GEN_SESSION_CB generate_session_id;
837 X509_VERIFY_PARAM *param;
841 # ifndef OPENSSL_NO_CT
842 CTLOG_STORE *ctlog_store; /* CT Log Store */
844 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
845 * If they are not, the connection should be aborted.
847 ssl_ct_validation_cb ct_validation_callback;
848 void *ct_validation_callback_arg;
852 * If we're using more than one pipeline how should we divide the data
853 * up between the pipes?
855 size_t split_send_fragment;
857 * Maximum amount of data to send in one fragment. actual record size can
858 * be more than this due to padding and MAC overheads.
860 size_t max_send_fragment;
862 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
863 size_t max_pipelines;
865 /* The default read buffer length to use (0 means not set) */
866 size_t default_read_buf_len;
868 # ifndef OPENSSL_NO_ENGINE
870 * Engine to pass requests for client certs to
872 ENGINE *client_cert_engine;
875 /* ClientHello callback. Mostly for extensions, but not entirely. */
876 SSL_client_hello_cb_fn client_hello_cb;
877 void *client_hello_cb_arg;
879 /* TLS extensions. */
881 /* TLS extensions servername callback */
882 int (*servername_cb) (SSL *, int *, void *);
883 void *servername_arg;
884 /* RFC 4507 session ticket keys */
885 unsigned char tick_key_name[TLSEXT_KEYNAME_LENGTH];
886 unsigned char tick_hmac_key[32];
887 unsigned char tick_aes_key[32];
888 /* Callback to support customisation of ticket key setting */
889 int (*ticket_key_cb) (SSL *ssl,
890 unsigned char *name, unsigned char *iv,
891 EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc);
893 /* certificate status request info */
894 /* Callback for status request */
895 int (*status_cb) (SSL *ssl, void *arg);
897 /* ext status type used for CSR extension (OCSP Stapling) */
900 # ifndef OPENSSL_NO_EC
901 /* EC extension values inherited by SSL structure */
902 size_t ecpointformats_len;
903 unsigned char *ecpointformats;
904 size_t supportedgroups_len;
905 uint16_t *supportedgroups;
906 # endif /* OPENSSL_NO_EC */
909 * ALPN information (we are in the process of transitioning from NPN to
914 * For a server, this contains a callback function that allows the
915 * server to select the protocol for the connection.
916 * out: on successful return, this must point to the raw protocol
917 * name (without the length prefix).
918 * outlen: on successful return, this contains the length of |*out|.
919 * in: points to the client's list of supported protocols in
921 * inlen: the length of |in|.
923 int (*alpn_select_cb) (SSL *s,
924 const unsigned char **out,
925 unsigned char *outlen,
926 const unsigned char *in,
927 unsigned int inlen, void *arg);
928 void *alpn_select_cb_arg;
931 * For a client, this contains the list of supported protocols in wire
937 # ifndef OPENSSL_NO_NEXTPROTONEG
938 /* Next protocol negotiation information */
941 * For a server, this contains a callback function by which the set of
942 * advertised protocols can be provided.
944 SSL_CTX_npn_advertised_cb_func npn_advertised_cb;
945 void *npn_advertised_cb_arg;
947 * For a client, this contains a callback function that selects the next
948 * protocol from the list provided by the server.
950 SSL_CTX_npn_select_cb_func npn_select_cb;
951 void *npn_select_cb_arg;
955 # ifndef OPENSSL_NO_PSK
956 SSL_psk_client_cb_func psk_client_callback;
957 SSL_psk_server_cb_func psk_server_callback;
959 SSL_psk_find_session_cb_func psk_find_session_cb;
960 SSL_psk_use_session_cb_func psk_use_session_cb;
962 # ifndef OPENSSL_NO_SRP
963 SRP_CTX srp_ctx; /* ctx for SRP authentication */
966 /* Shared DANE context */
967 struct dane_ctx_st dane;
969 /* SRTP profiles we are willing to do from RFC 5764 */
970 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
972 * Callback for disabling session caching and ticket support on a session
973 * basis, depending on the chosen cipher.
975 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
980 * Callback for logging key material for use with debugging tools like
981 * Wireshark. The callback should log `line` followed by a newline.
983 SSL_CTX_keylog_cb_func keylog_callback;
985 /* The maximum number of bytes that can be sent as early data */
986 uint32_t max_early_data;
988 /* TLS1.3 padding callback */
989 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
990 void *record_padding_arg;
991 size_t block_padding;
996 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1001 const SSL_METHOD *method;
1003 * There are 2 BIO's even though they are normally both the same. This
1004 * is so data can be read and written to different handlers
1006 /* used by SSL_read */
1008 /* used by SSL_write */
1010 /* used during session-id reuse to concatenate messages */
1013 * This holds a variable that indicates what we were doing when a 0 or -1
1014 * is returned. This is needed for non-blocking IO so we know what
1015 * request needs re-doing when in SSL_accept or SSL_connect
1018 int (*handshake_func) (SSL *);
1020 * Imagine that here's a boolean member "init" that is switched as soon
1021 * as SSL_set_{accept/connect}_state is called for the first time, so
1022 * that "state" and "handshake_func" are properly initialized. But as
1023 * handshake_func is == 0 until then, we use this test instead of an
1026 /* are we the server side? */
1029 * Generate a new session or reuse an old one.
1030 * NB: For servers, the 'new' session may actually be a previously
1031 * cached session or even the previous session unless
1032 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1035 /* don't send shutdown packets */
1037 /* we have shut things down, 0x01 sent, 0x02 for received */
1041 SSL_EARLY_DATA_STATE early_data_state;
1042 BUF_MEM *init_buf; /* buffer used during init */
1043 void *init_msg; /* pointer to handshake message body, set by
1044 * ssl3_get_message() */
1045 size_t init_num; /* amount read/written */
1046 size_t init_off; /* amount read/written */
1047 struct ssl3_state_st *s3; /* SSLv3 variables */
1048 struct dtls1_state_st *d1; /* DTLSv1 variables */
1049 /* callback that allows applications to peek at protocol messages */
1050 void (*msg_callback) (int write_p, int version, int content_type,
1051 const void *buf, size_t len, SSL *ssl, void *arg);
1052 void *msg_callback_arg;
1053 int hit; /* reusing a previous session */
1054 X509_VERIFY_PARAM *param;
1055 /* Per connection DANE state */
1058 STACK_OF(SSL_CIPHER) *cipher_list;
1059 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
1061 * These are the ones being used, the ones in SSL_SESSION are the ones to
1062 * be 'copied' into these ones
1066 * The TLS1.3 secrets. The resumption master secret is stored in the
1069 unsigned char early_secret[EVP_MAX_MD_SIZE];
1070 unsigned char handshake_secret[EVP_MAX_MD_SIZE];
1071 unsigned char master_secret[EVP_MAX_MD_SIZE];
1072 unsigned char client_finished_secret[EVP_MAX_MD_SIZE];
1073 unsigned char server_finished_secret[EVP_MAX_MD_SIZE];
1074 unsigned char server_finished_hash[EVP_MAX_MD_SIZE];
1075 unsigned char handshake_traffic_hash[EVP_MAX_MD_SIZE];
1076 unsigned char client_app_traffic_secret[EVP_MAX_MD_SIZE];
1077 unsigned char server_app_traffic_secret[EVP_MAX_MD_SIZE];
1078 unsigned char exporter_master_secret[EVP_MAX_MD_SIZE];
1079 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
1080 unsigned char read_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static read IV */
1081 EVP_MD_CTX *read_hash; /* used for mac generation */
1082 COMP_CTX *compress; /* compression */
1083 COMP_CTX *expand; /* uncompress */
1084 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1085 unsigned char write_iv[EVP_MAX_IV_LENGTH]; /* TLSv1.3 static write IV */
1086 EVP_MD_CTX *write_hash; /* used for mac generation */
1087 /* Count of how many KeyUpdate messages we have received */
1088 unsigned int key_update_count;
1091 /* This is used to hold the server certificate used */
1092 struct cert_st /* CERT */ *cert;
1095 * The hash of all messages prior to the CertificateVerify, and the length
1098 unsigned char cert_verify_hash[EVP_MAX_MD_SIZE];
1099 size_t cert_verify_hash_len;
1101 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1102 int hello_retry_request;
1105 * the session_id_context is used to ensure sessions are only reused in
1106 * the appropriate context
1108 size_t sid_ctx_length;
1109 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
1110 /* This can also be in the session once a session is established */
1111 SSL_SESSION *session;
1112 /* TLSv1.3 PSK session */
1113 SSL_SESSION *psksession;
1114 unsigned char *psksession_id;
1115 size_t psksession_id_len;
1116 /* Default generate session ID callback. */
1117 GEN_SESSION_CB generate_session_id;
1120 * 0 don't care about verify failure.
1121 * 1 fail if verify fails
1123 uint32_t verify_mode;
1124 /* fail if callback returns 0 */
1125 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
1126 /* optional informational callback */
1127 void (*info_callback) (const SSL *ssl, int type, int val);
1128 /* error bytes to be written */
1132 # ifndef OPENSSL_NO_PSK
1133 SSL_psk_client_cb_func psk_client_callback;
1134 SSL_psk_server_cb_func psk_server_callback;
1136 SSL_psk_find_session_cb_func psk_find_session_cb;
1137 SSL_psk_use_session_cb_func psk_use_session_cb;
1139 /* Verified chain of peer */
1140 STACK_OF(X509) *verified_chain;
1142 /* extra application data */
1143 CRYPTO_EX_DATA ex_data;
1144 /* for server side, keep the list of CA_dn we can use */
1145 STACK_OF(X509_NAME) *ca_names;
1146 CRYPTO_REF_COUNT references;
1147 /* protocol behaviour */
1151 int min_proto_version;
1152 int max_proto_version;
1153 size_t max_cert_list;
1156 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1157 * secret and SSLv3/TLS (<=1.2) rollback check
1161 * If we're using more than one pipeline how should we divide the data
1162 * up between the pipes?
1164 size_t split_send_fragment;
1166 * Maximum amount of data to send in one fragment. actual record size can
1167 * be more than this due to padding and MAC overheads.
1169 size_t max_send_fragment;
1170 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1171 size_t max_pipelines;
1174 /* Built-in extension flags */
1175 uint8_t extflags[TLSEXT_IDX_num_builtins];
1176 /* TLS extension debug callback */
1177 void (*debug_cb)(SSL *s, int client_server, int type,
1178 const unsigned char *data, int len, void *arg);
1181 /* certificate status request info */
1182 /* Status type or -1 if no status type */
1184 /* Raw extension data, if seen */
1185 unsigned char *scts;
1186 /* Length of raw extension data, if seen */
1188 /* Expect OCSP CertificateStatus message */
1189 int status_expected;
1192 /* OCSP status request only */
1193 STACK_OF(OCSP_RESPID) *ids;
1194 X509_EXTENSIONS *exts;
1195 /* OCSP response received or to be sent */
1196 unsigned char *resp;
1200 /* RFC4507 session ticket expected to be received or sent */
1201 int ticket_expected;
1202 # ifndef OPENSSL_NO_EC
1203 size_t ecpointformats_len;
1205 unsigned char *ecpointformats;
1206 size_t supportedgroups_len;
1208 uint16_t *supportedgroups;
1209 # endif /* OPENSSL_NO_EC */
1210 /* TLS Session Ticket extension override */
1211 TLS_SESSION_TICKET_EXT *session_ticket;
1212 /* TLS Session Ticket extension callback */
1213 tls_session_ticket_ext_cb_fn session_ticket_cb;
1214 void *session_ticket_cb_arg;
1215 /* TLS pre-shared secret session resumption */
1216 tls_session_secret_cb_fn session_secret_cb;
1217 void *session_secret_cb_arg;
1219 * For a client, this contains the list of supported protocols in wire
1222 unsigned char *alpn;
1225 * Next protocol negotiation. For the client, this is the protocol that
1226 * we sent in NextProtocol and is set when handling ServerHello
1227 * extensions. For a server, this is the client's selected_protocol from
1228 * NextProtocol and is set when handling the NextProtocol message, before
1229 * the Finished message.
1234 /* The available PSK key exchange modes */
1237 /* Set to one if we have negotiated ETM */
1240 /* Are we expecting to receive early data? */
1242 /* Is the session suitable for early data? */
1245 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1246 unsigned char *tls13_cookie;
1247 size_t tls13_cookie_len;
1251 * Parsed form of the ClientHello, kept around across client_hello_cb
1254 CLIENTHELLO_MSG *clienthello;
1257 * no further mod of servername
1258 * 0 : call the servername extension callback.
1259 * 1 : prepare 2, allow last ack just after in server callback.
1260 * 2 : don't call servername callback, no ack in server hello
1262 int servername_done;
1263 # ifndef OPENSSL_NO_CT
1265 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1266 * If they are not, the connection should be aborted.
1268 ssl_ct_validation_cb ct_validation_callback;
1269 /* User-supplied argument that is passed to the ct_validation_callback */
1270 void *ct_validation_callback_arg;
1272 * Consolidated stack of SCTs from all sources.
1273 * Lazily populated by CT_get_peer_scts(SSL*)
1275 STACK_OF(SCT) *scts;
1276 /* Have we attempted to find/parse SCTs yet? */
1279 SSL_CTX *session_ctx; /* initial ctx, used to store sessions */
1281 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1282 /* What's been chosen */
1283 SRTP_PROTECTION_PROFILE *srtp_profile;
1285 * 1 if we are renegotiating.
1286 * 2 if we are a server and are inside a handshake
1287 * (i.e. not just sending a HelloRequest)
1290 /* If sending a KeyUpdate is pending */
1292 # ifndef OPENSSL_NO_SRP
1293 /* ctx for SRP authentication */
1297 * Callback for disabling session caching and ticket support on a session
1298 * basis, depending on the chosen cipher.
1300 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1301 RECORD_LAYER rlayer;
1302 /* Default password callback. */
1303 pem_password_cb *default_passwd_callback;
1304 /* Default password callback user data. */
1305 void *default_passwd_callback_userdata;
1306 /* Async Job info */
1308 ASYNC_WAIT_CTX *waitctx;
1311 /* The maximum number of plaintext bytes that can be sent as early data */
1312 uint32_t max_early_data;
1314 * The number of bytes of early data received so far. If we accepted early
1315 * data then this is a count of the plaintext bytes. If we rejected it then
1316 * this is a count of the ciphertext bytes.
1318 uint32_t early_data_count;
1320 /* TLS1.3 padding callback */
1321 size_t (*record_padding_cb)(SSL *s, int type, size_t len, void *arg);
1322 void *record_padding_arg;
1323 size_t block_padding;
1325 CRYPTO_RWLOCK *lock;
1330 * Structure containing table entry of values associated with the signature
1331 * algorithms (signature scheme) extension
1333 typedef struct sigalg_lookup_st {
1334 /* TLS 1.3 signature scheme name */
1336 /* Raw value used in extension */
1338 /* NID of hash algorithm or NID_undef if no hash */
1340 /* Index of hash algorithm or -1 if no hash algorithm */
1342 /* NID of signature algorithm */
1344 /* Index of signature algorithm */
1346 /* Combined hash and signature NID, if any */
1348 /* Required public key curve (ECDSA only) */
1352 typedef struct tls_group_info_st {
1353 int nid; /* Curve NID */
1354 int secbits; /* Bits of security (from SP800-57) */
1355 uint16_t flags; /* Flags: currently just group type */
1359 # define TLS_CURVE_TYPE 0x3 /* Mask for group type */
1360 # define TLS_CURVE_PRIME 0x0
1361 # define TLS_CURVE_CHAR2 0x1
1362 # define TLS_CURVE_CUSTOM 0x2
1364 typedef struct cert_pkey_st CERT_PKEY;
1367 * Structure containing table entry of certificate info corresponding to
1371 int nid; /* NID of pubic key algorithm */
1372 uint32_t amask; /* authmask corresponding to key type */
1375 typedef struct ssl3_state_st {
1377 size_t read_mac_secret_size;
1378 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1379 size_t write_mac_secret_size;
1380 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1381 unsigned char server_random[SSL3_RANDOM_SIZE];
1382 unsigned char client_random[SSL3_RANDOM_SIZE];
1383 /* flags for countermeasure against known-IV weakness */
1384 int need_empty_fragments;
1385 int empty_fragment_done;
1386 /* used during startup, digest all incoming/outgoing packets */
1387 BIO *handshake_buffer;
1389 * When handshake digest is determined, buffer is hashed and
1390 * freed and MD_CTX for the required digest is stored here.
1392 EVP_MD_CTX *handshake_dgst;
1394 * Set whenever an expected ChangeCipherSpec message is processed.
1395 * Unset when the peer's Finished message is received.
1396 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1398 int change_cipher_spec;
1402 * we allow one fatal and one warning alert to be outstanding, send close
1403 * alert via the warning alert
1406 unsigned char send_alert[2];
1408 * This flag is set when we should renegotiate ASAP, basically when there
1409 * is no more data in the read or write buffers
1412 int total_renegotiations;
1413 int num_renegotiations;
1414 int in_read_app_data;
1416 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1417 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1418 size_t finish_md_len;
1419 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1420 size_t peer_finish_md_len;
1421 size_t message_size;
1423 /* used to hold the new cipher we are going to use */
1424 const SSL_CIPHER *new_cipher;
1425 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1426 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1428 /* used for certificate requests */
1430 /* Certificate types in certificate request message. */
1433 /* Certificate authorities list peer sent */
1434 STACK_OF(X509_NAME) *peer_ca_names;
1435 size_t key_block_length;
1436 unsigned char *key_block;
1437 const EVP_CIPHER *new_sym_enc;
1438 const EVP_MD *new_hash;
1439 int new_mac_pkey_type;
1440 size_t new_mac_secret_size;
1441 # ifndef OPENSSL_NO_COMP
1442 const SSL_COMP *new_compression;
1444 char *new_compression;
1447 /* Raw values of the cipher list from a client */
1448 unsigned char *ciphers_raw;
1449 size_t ciphers_rawlen;
1450 /* Temporary storage for premaster secret */
1453 # ifndef OPENSSL_NO_PSK
1454 /* Temporary storage for PSK key */
1458 /* Signature algorithm we actually use */
1459 const SIGALG_LOOKUP *sigalg;
1460 /* Pointer to certificate we use */
1463 * signature algorithms peer reports: e.g. supported signature
1464 * algorithms extension for server or as part of a certificate
1465 * request for client.
1467 uint16_t *peer_sigalgs;
1468 /* Size of above array */
1469 size_t peer_sigalgslen;
1470 /* Sigalg peer actualy uses */
1471 const SIGALG_LOOKUP *peer_sigalg;
1473 * Set if corresponding CERT_PKEY can be used with current
1474 * SSL session: e.g. appropriate curve, signature algorithms etc.
1475 * If zero it can't be used at all.
1477 uint32_t valid_flags[SSL_PKEY_NUM];
1479 * For servers the following masks are for the key and auth algorithms
1480 * that are supported by the certs below. For clients they are masks of
1481 * *disabled* algorithms based on the current session.
1486 * The following are used by the client to see if a cipher is allowed or
1487 * not. It contains the minimum and maximum version the client's using
1488 * based on what it knows so far.
1494 /* Connection binding to prevent renegotiation attacks */
1495 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1496 size_t previous_client_finished_len;
1497 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1498 size_t previous_server_finished_len;
1499 int send_connection_binding; /* TODOEKR */
1501 # ifndef OPENSSL_NO_NEXTPROTONEG
1503 * Set if we saw the Next Protocol Negotiation extension from our peer.
1509 * ALPN information (we are in the process of transitioning from NPN to
1514 * In a server these point to the selected ALPN protocol after the
1515 * ClientHello has been processed. In a client these contain the protocol
1516 * that the server selected once the ServerHello has been processed.
1518 unsigned char *alpn_selected;
1519 size_t alpn_selected_len;
1520 /* used by the server to know what options were proposed */
1521 unsigned char *alpn_proposed;
1522 size_t alpn_proposed_len;
1523 /* used by the client to know if it actually sent alpn */
1526 # ifndef OPENSSL_NO_EC
1528 * This is set to true if we believe that this is a version of Safari
1529 * running on OS X 10.6 or newer. We wish to know this because Safari on
1530 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1532 char is_probably_safari;
1533 # endif /* !OPENSSL_NO_EC */
1535 /* For clients: peer temporary key */
1536 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1537 /* The group_id for the DH/ECDH key */
1544 /* DTLS structures */
1546 # ifndef OPENSSL_NO_SCTP
1547 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1550 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1551 # define DTLS1_MAX_MTU_OVERHEAD 48
1554 * Flag used in message reuse to indicate the buffer contains the record
1555 * header as well as the the handshake message header.
1557 # define DTLS1_SKIP_RECORD_HEADER 2
1559 struct dtls1_retransmit_state {
1560 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1561 EVP_MD_CTX *write_hash; /* used for mac generation */
1562 COMP_CTX *compress; /* compression */
1563 SSL_SESSION *session;
1564 unsigned short epoch;
1567 struct hm_header_st {
1573 unsigned int is_ccs;
1574 struct dtls1_retransmit_state saved_retransmit_state;
1577 struct dtls1_timeout_st {
1578 /* Number of read timeouts so far */
1579 unsigned int read_timeouts;
1580 /* Number of write timeouts so far */
1581 unsigned int write_timeouts;
1582 /* Number of alerts received so far */
1583 unsigned int num_alerts;
1586 typedef struct hm_fragment_st {
1587 struct hm_header_st msg_header;
1588 unsigned char *fragment;
1589 unsigned char *reassembly;
1592 typedef struct pqueue_st pqueue;
1593 typedef struct pitem_st pitem;
1596 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1601 typedef struct pitem_st *piterator;
1603 pitem *pitem_new(unsigned char *prio64be, void *data);
1604 void pitem_free(pitem *item);
1605 pqueue *pqueue_new(void);
1606 void pqueue_free(pqueue *pq);
1607 pitem *pqueue_insert(pqueue *pq, pitem *item);
1608 pitem *pqueue_peek(pqueue *pq);
1609 pitem *pqueue_pop(pqueue *pq);
1610 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1611 pitem *pqueue_iterator(pqueue *pq);
1612 pitem *pqueue_next(piterator *iter);
1613 size_t pqueue_size(pqueue *pq);
1615 typedef struct dtls1_state_st {
1616 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1618 unsigned int cookie_verified;
1619 /* handshake message numbers */
1620 unsigned short handshake_write_seq;
1621 unsigned short next_handshake_write_seq;
1622 unsigned short handshake_read_seq;
1623 /* Buffered handshake messages */
1624 pqueue *buffered_messages;
1625 /* Buffered (sent) handshake records */
1626 pqueue *sent_messages;
1627 size_t link_mtu; /* max on-the-wire DTLS packet size */
1628 size_t mtu; /* max DTLS packet size */
1629 struct hm_header_st w_msg_hdr;
1630 struct hm_header_st r_msg_hdr;
1631 struct dtls1_timeout_st timeout;
1633 * Indicates when the last handshake msg sent will timeout
1635 struct timeval next_timeout;
1636 /* Timeout duration */
1637 unsigned int timeout_duration_us;
1639 unsigned int retransmitting;
1640 # ifndef OPENSSL_NO_SCTP
1641 int shutdown_received;
1644 DTLS_timer_cb timer_cb;
1648 # ifndef OPENSSL_NO_EC
1650 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1652 # define EXPLICIT_PRIME_CURVE_TYPE 1
1653 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1654 # define NAMED_CURVE_TYPE 3
1655 # endif /* OPENSSL_NO_EC */
1657 struct cert_pkey_st {
1659 EVP_PKEY *privatekey;
1660 /* Chain for this certificate */
1661 STACK_OF(X509) *chain;
1663 * serverinfo data for this certificate. The data is in TLS Extension
1664 * wire format, specifically it's a series of records like:
1665 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1667 * uint8_t data[length];
1669 unsigned char *serverinfo;
1670 size_t serverinfo_length;
1672 /* Retrieve Suite B flags */
1673 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1674 /* Uses to check strict mode: suite B modes are always strict */
1675 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1676 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1679 ENDPOINT_CLIENT = 0,
1686 unsigned short ext_type;
1688 /* The context which this extension applies to */
1689 unsigned int context;
1691 * Per-connection flags relating to this extension type: not used if
1692 * part of an SSL_CTX structure.
1695 SSL_custom_ext_add_cb_ex add_cb;
1696 SSL_custom_ext_free_cb_ex free_cb;
1698 SSL_custom_ext_parse_cb_ex parse_cb;
1700 } custom_ext_method;
1702 /* ext_flags values */
1705 * Indicates an extension has been received. Used to check for unsolicited or
1706 * duplicate extensions.
1708 # define SSL_EXT_FLAG_RECEIVED 0x1
1710 * Indicates an extension has been sent: used to enable sending of
1711 * corresponding ServerHello extension.
1713 # define SSL_EXT_FLAG_SENT 0x2
1716 custom_ext_method *meths;
1718 } custom_ext_methods;
1720 typedef struct cert_st {
1721 /* Current active set */
1723 * ALWAYS points to an element of the pkeys array
1724 * Probably it would make more sense to store
1725 * an index, not a pointer.
1728 # ifndef OPENSSL_NO_DH
1730 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1733 /* Flags related to certificates */
1734 uint32_t cert_flags;
1735 CERT_PKEY pkeys[SSL_PKEY_NUM];
1736 /* Custom certificate types sent in certificate request message. */
1740 * supported signature algorithms. When set on a client this is sent in
1741 * the client hello as the supported signature algorithms extension. For
1742 * servers it represents the signature algorithms we are willing to use.
1744 uint16_t *conf_sigalgs;
1745 /* Size of above array */
1746 size_t conf_sigalgslen;
1748 * Client authentication signature algorithms, if not set then uses
1749 * conf_sigalgs. On servers these will be the signature algorithms sent
1750 * to the client in a certificate request for TLS 1.2. On a client this
1751 * represents the signature algorithms we are willing to use for client
1754 uint16_t *client_sigalgs;
1755 /* Size of above array */
1756 size_t client_sigalgslen;
1758 * Signature algorithms shared by client and server: cached because these
1759 * are used most often.
1761 const SIGALG_LOOKUP **shared_sigalgs;
1762 size_t shared_sigalgslen;
1764 * Certificate setup callback: if set is called whenever a certificate
1765 * may be required (client or server). the callback can then examine any
1766 * appropriate parameters and setup any certificates required. This
1767 * allows advanced applications to select certificates on the fly: for
1768 * example based on supported signature algorithms or curves.
1770 int (*cert_cb) (SSL *ssl, void *arg);
1773 * Optional X509_STORE for chain building or certificate validation If
1774 * NULL the parent SSL_CTX store is used instead.
1776 X509_STORE *chain_store;
1777 X509_STORE *verify_store;
1778 /* Custom extensions */
1779 custom_ext_methods custext;
1780 /* Security callback */
1781 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1782 void *other, void *ex);
1783 /* Security level */
1786 # ifndef OPENSSL_NO_PSK
1787 /* If not NULL psk identity hint to use for servers */
1788 char *psk_identity_hint;
1790 CRYPTO_REF_COUNT references; /* >1 only if SSL_copy_session_id is used */
1791 CRYPTO_RWLOCK *lock;
1794 # define FP_ICC (int (*)(const void *,const void *))
1797 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1798 * of a mess of functions, but hell, think of it as an opaque structure :-)
1800 typedef struct ssl3_enc_method {
1801 int (*enc) (SSL *, SSL3_RECORD *, size_t, int);
1802 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
1803 int (*setup_key_block) (SSL *);
1804 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1806 int (*change_cipher_state) (SSL *, int);
1807 size_t (*final_finish_mac) (SSL *, const char *, size_t, unsigned char *);
1808 const char *client_finished_label;
1809 size_t client_finished_label_len;
1810 const char *server_finished_label;
1811 size_t server_finished_label_len;
1812 int (*alert_value) (int);
1813 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1814 const char *, size_t,
1815 const unsigned char *, size_t,
1817 /* Various flags indicating protocol version requirements */
1819 /* Set the handshake header */
1820 int (*set_handshake_header) (SSL *s, WPACKET *pkt, int type);
1821 /* Close construction of the handshake message */
1822 int (*close_construct_packet) (SSL *s, WPACKET *pkt, int htype);
1823 /* Write out handshake message */
1824 int (*do_write) (SSL *s);
1827 # define ssl_set_handshake_header(s, pkt, htype) \
1828 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
1829 # define ssl_close_construct_packet(s, pkt, htype) \
1830 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
1831 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1833 /* Values for enc_flags */
1835 /* Uses explicit IV for CBC mode */
1836 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1837 /* Uses signature algorithms extension */
1838 # define SSL_ENC_FLAG_SIGALGS 0x2
1839 /* Uses SHA256 default PRF */
1840 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1842 # define SSL_ENC_FLAG_DTLS 0x8
1844 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1845 * apply to others in future.
1847 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1849 # ifndef OPENSSL_NO_COMP
1850 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1851 typedef struct ssl3_comp_st {
1852 int comp_id; /* The identifier byte for this compression
1854 char *name; /* Text name used for the compression type */
1855 COMP_METHOD *method; /* The method :-) */
1859 typedef enum downgrade_en {
1866 * Dummy status type for the status_type extension. Indicates no status type
1869 #define TLSEXT_STATUSTYPE_nothing -1
1871 /* Sigalgs values */
1872 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
1873 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
1874 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
1875 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
1876 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
1877 #define TLSEXT_SIGALG_rsa_pss_sha256 0x0804
1878 #define TLSEXT_SIGALG_rsa_pss_sha384 0x0805
1879 #define TLSEXT_SIGALG_rsa_pss_sha512 0x0806
1880 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
1881 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
1882 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
1883 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
1884 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
1885 #define TLSEXT_SIGALG_dsa_sha256 0x0402
1886 #define TLSEXT_SIGALG_dsa_sha384 0x0502
1887 #define TLSEXT_SIGALG_dsa_sha512 0x0602
1888 #define TLSEXT_SIGALG_dsa_sha224 0x0302
1889 #define TLSEXT_SIGALG_dsa_sha1 0x0202
1890 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
1891 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
1892 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
1894 #define TLSEXT_SIGALG_ed25519 0x0807
1896 /* Known PSK key exchange modes */
1897 #define TLSEXT_KEX_MODE_KE 0x00
1898 #define TLSEXT_KEX_MODE_KE_DHE 0x01
1901 * Internal representations of key exchange modes
1903 #define TLSEXT_KEX_MODE_FLAG_NONE 0
1904 #define TLSEXT_KEX_MODE_FLAG_KE 1
1905 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
1907 /* An invalid index into the TLSv1.3 PSK identities */
1908 #define TLSEXT_PSK_BAD_IDENTITY -1
1910 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \
1911 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
1913 /* A dummy signature value not valid for TLSv1.2 signature algs */
1914 #define TLSEXT_signature_rsa_pss 0x0101
1916 /* TLSv1.3 downgrade protection sentinel values */
1917 extern const unsigned char tls11downgrade[8];
1918 extern const unsigned char tls12downgrade[8];
1920 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
1922 __owur const SSL_METHOD *ssl_bad_method(int ver);
1923 __owur const SSL_METHOD *sslv3_method(void);
1924 __owur const SSL_METHOD *sslv3_server_method(void);
1925 __owur const SSL_METHOD *sslv3_client_method(void);
1926 __owur const SSL_METHOD *tlsv1_method(void);
1927 __owur const SSL_METHOD *tlsv1_server_method(void);
1928 __owur const SSL_METHOD *tlsv1_client_method(void);
1929 __owur const SSL_METHOD *tlsv1_1_method(void);
1930 __owur const SSL_METHOD *tlsv1_1_server_method(void);
1931 __owur const SSL_METHOD *tlsv1_1_client_method(void);
1932 __owur const SSL_METHOD *tlsv1_2_method(void);
1933 __owur const SSL_METHOD *tlsv1_2_server_method(void);
1934 __owur const SSL_METHOD *tlsv1_2_client_method(void);
1935 __owur const SSL_METHOD *tlsv1_3_method(void);
1936 __owur const SSL_METHOD *tlsv1_3_server_method(void);
1937 __owur const SSL_METHOD *tlsv1_3_client_method(void);
1938 __owur const SSL_METHOD *dtlsv1_method(void);
1939 __owur const SSL_METHOD *dtlsv1_server_method(void);
1940 __owur const SSL_METHOD *dtlsv1_client_method(void);
1941 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
1942 __owur const SSL_METHOD *dtlsv1_2_method(void);
1943 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
1944 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
1946 extern const SSL3_ENC_METHOD TLSv1_enc_data;
1947 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
1948 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
1949 extern const SSL3_ENC_METHOD TLSv1_3_enc_data;
1950 extern const SSL3_ENC_METHOD SSLv3_enc_data;
1951 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
1952 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
1955 * Flags for SSL methods
1957 # define SSL_METHOD_NO_FIPS (1U<<0)
1958 # define SSL_METHOD_NO_SUITEB (1U<<1)
1960 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
1961 s_connect, enc_data) \
1962 const SSL_METHOD *func_name(void) \
1964 static const SSL_METHOD func_name##_data= { \
1978 ssl3_renegotiate_check, \
1981 ssl3_dispatch_alert, \
1984 ssl3_get_cipher_by_char, \
1985 ssl3_put_cipher_by_char, \
1989 tls1_default_timeout, \
1991 ssl_undefined_void_function, \
1992 ssl3_callback_ctrl, \
1993 ssl3_ctx_callback_ctrl, \
1995 return &func_name##_data; \
1998 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
1999 const SSL_METHOD *func_name(void) \
2001 static const SSL_METHOD func_name##_data= { \
2003 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2015 ssl3_renegotiate_check, \
2018 ssl3_dispatch_alert, \
2021 ssl3_get_cipher_by_char, \
2022 ssl3_put_cipher_by_char, \
2026 ssl3_default_timeout, \
2028 ssl_undefined_void_function, \
2029 ssl3_callback_ctrl, \
2030 ssl3_ctx_callback_ctrl, \
2032 return &func_name##_data; \
2035 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2036 s_connect, enc_data) \
2037 const SSL_METHOD *func_name(void) \
2039 static const SSL_METHOD func_name##_data= { \
2053 ssl3_renegotiate_check, \
2055 dtls1_write_app_data_bytes, \
2056 dtls1_dispatch_alert, \
2059 ssl3_get_cipher_by_char, \
2060 ssl3_put_cipher_by_char, \
2064 dtls1_default_timeout, \
2066 ssl_undefined_void_function, \
2067 ssl3_callback_ctrl, \
2068 ssl3_ctx_callback_ctrl, \
2070 return &func_name##_data; \
2073 struct openssl_ssl_test_functions {
2074 int (*p_ssl_init_wbio_buffer) (SSL *s);
2075 int (*p_ssl3_setup_buffers) (SSL *s);
2078 const char *ssl_protocol_to_string(int version);
2080 /* Returns true if certificate and private key for 'idx' are present */
2081 static ossl_inline int ssl_has_cert(const SSL *s, int idx)
2083 if (idx < 0 || idx >= SSL_PKEY_NUM)
2085 return s->cert->pkeys[idx].x509 != NULL
2086 && s->cert->pkeys[idx].privatekey != NULL;
2089 # ifndef OPENSSL_UNIT_TEST
2091 __owur int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes);
2092 __owur int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written);
2093 void ssl_clear_cipher_ctx(SSL *s);
2094 int ssl_clear_bad_session(SSL *s);
2095 __owur CERT *ssl_cert_new(void);
2096 __owur CERT *ssl_cert_dup(CERT *cert);
2097 void ssl_cert_clear_certs(CERT *c);
2098 void ssl_cert_free(CERT *c);
2099 __owur int ssl_get_new_session(SSL *s, int session);
2100 __owur int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello, int *al);
2101 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
2102 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
2103 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
2104 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2105 const SSL_CIPHER *const *bp);
2106 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
2107 STACK_OF(SSL_CIPHER) **pref,
2108 STACK_OF(SSL_CIPHER)
2110 const char *rule_str,
2112 __owur int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites,
2113 int sslv2format, int *al);
2114 __owur int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
2115 STACK_OF(SSL_CIPHER) **skp,
2116 STACK_OF(SSL_CIPHER) **scsvs, int sslv2format,
2118 void ssl_update_cache(SSL *s, int mode);
2119 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
2120 const EVP_MD **md, int *mac_pkey_type,
2121 size_t *mac_secret_size, SSL_COMP **comp,
2123 __owur int ssl_cipher_get_overhead(const SSL_CIPHER *c, size_t *mac_overhead,
2124 size_t *int_overhead, size_t *blocksize,
2125 size_t *ext_overhead);
2126 __owur int ssl_cert_is_disabled(size_t idx);
2127 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl,
2128 const unsigned char *ptr,
2130 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2131 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
2132 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2133 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
2134 __owur int ssl_cert_select_current(CERT *c, X509 *x);
2135 __owur int ssl_cert_set_current(CERT *c, long arg);
2136 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg), void *arg);
2138 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
2139 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
2140 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain,
2143 __owur int ssl_randbytes(SSL *s, unsigned char *buf, size_t num);
2144 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
2145 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid,
2148 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_pkey(const EVP_PKEY *pk,
2150 __owur const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx);
2152 int ssl_undefined_function(SSL *s);
2153 __owur int ssl_undefined_void_function(void);
2154 __owur int ssl_undefined_const_function(const SSL *s);
2155 __owur int ssl_get_server_cert_serverinfo(SSL *s,
2156 const unsigned char **serverinfo,
2157 size_t *serverinfo_length);
2158 void ssl_set_masks(SSL *s);
2159 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
2160 __owur int ssl_verify_alarm_type(long type);
2161 void ssl_sort_cipher_list(void);
2162 int ssl_load_ciphers(void);
2163 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field,
2164 size_t len, DOWNGRADE dgrd);
2165 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
2167 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm);
2168 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey,
2170 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
2172 __owur const SSL_CIPHER *ssl3_get_cipher_by_id(uint32_t id);
2173 __owur const SSL_CIPHER *ssl3_get_cipher_by_std_name(const char *stdname);
2174 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
2175 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, WPACKET *pkt,
2177 int ssl3_init_finished_mac(SSL *s);
2178 __owur int ssl3_setup_key_block(SSL *s);
2179 __owur int ssl3_change_cipher_state(SSL *s, int which);
2180 void ssl3_cleanup_key_block(SSL *s);
2181 __owur int ssl3_do_write(SSL *s, int type);
2182 int ssl3_send_alert(SSL *s, int level, int desc);
2183 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
2184 unsigned char *p, size_t len,
2185 size_t *secret_size);
2186 __owur int ssl3_get_req_cert_type(SSL *s, WPACKET *pkt);
2187 __owur int ssl3_num_ciphers(void);
2188 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
2189 int ssl3_renegotiate(SSL *ssl);
2190 int ssl3_renegotiate_check(SSL *ssl, int initok);
2191 __owur int ssl3_dispatch_alert(SSL *s);
2192 __owur size_t ssl3_final_finish_mac(SSL *s, const char *sender, size_t slen,
2194 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, size_t len);
2195 void ssl3_free_digest_list(SSL *s);
2196 __owur unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt,
2197 CERT_PKEY *cpk, int *al);
2198 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
2199 STACK_OF(SSL_CIPHER) *clnt,
2200 STACK_OF(SSL_CIPHER) *srvr);
2201 __owur int ssl3_digest_cached_records(SSL *s, int keep);
2202 __owur int ssl3_new(SSL *s);
2203 void ssl3_free(SSL *s);
2204 __owur int ssl3_read(SSL *s, void *buf, size_t len, size_t *readbytes);
2205 __owur int ssl3_peek(SSL *s, void *buf, size_t len, size_t *readbytes);
2206 __owur int ssl3_write(SSL *s, const void *buf, size_t len, size_t *written);
2207 __owur int ssl3_shutdown(SSL *s);
2208 int ssl3_clear(SSL *s);
2209 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
2210 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
2211 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
2212 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
2214 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
2215 __owur long ssl3_default_timeout(void);
2217 __owur int ssl3_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2218 __owur int tls_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2219 __owur int tls_setup_handshake(SSL *s);
2220 __owur int dtls1_set_handshake_header(SSL *s, WPACKET *pkt, int htype);
2221 __owur int dtls1_close_construct_packet(SSL *s, WPACKET *pkt, int htype);
2222 __owur int ssl3_handshake_write(SSL *s);
2224 __owur int ssl_allow_compression(SSL *s);
2226 __owur int ssl_version_supported(const SSL *s, int version);
2228 __owur int ssl_set_client_hello_version(SSL *s);
2229 __owur int ssl_check_version_downgrade(SSL *s);
2230 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
2231 __owur int ssl_choose_server_version(SSL *s, CLIENTHELLO_MSG *hello,
2233 __owur int ssl_choose_client_version(SSL *s, int version, int checkdgrd,
2235 int ssl_get_min_max_version(const SSL *s, int *min_version, int *max_version);
2237 __owur long tls1_default_timeout(void);
2238 __owur int dtls1_do_write(SSL *s, int type);
2239 void dtls1_set_message_header(SSL *s,
2242 size_t frag_off, size_t frag_len);
2244 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf_, size_t len,
2247 __owur int dtls1_read_failed(SSL *s, int code);
2248 __owur int dtls1_buffer_message(SSL *s, int ccs);
2249 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
2250 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
2251 int dtls1_retransmit_buffered_messages(SSL *s);
2252 void dtls1_clear_received_buffer(SSL *s);
2253 void dtls1_clear_sent_buffer(SSL *s);
2254 void dtls1_get_message_header(unsigned char *data,
2255 struct hm_header_st *msg_hdr);
2256 __owur long dtls1_default_timeout(void);
2257 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
2258 __owur int dtls1_check_timeout_num(SSL *s);
2259 __owur int dtls1_handle_timeout(SSL *s);
2260 void dtls1_start_timer(SSL *s);
2261 void dtls1_stop_timer(SSL *s);
2262 __owur int dtls1_is_timer_expired(SSL *s);
2263 void dtls1_double_timeout(SSL *s);
2264 __owur int dtls_raw_hello_verify_request(WPACKET *pkt, unsigned char *cookie,
2266 __owur size_t dtls1_min_mtu(SSL *s);
2267 void dtls1_hm_fragment_free(hm_fragment *frag);
2268 __owur int dtls1_query_mtu(SSL *s);
2270 __owur int tls1_new(SSL *s);
2271 void tls1_free(SSL *s);
2272 int tls1_clear(SSL *s);
2274 __owur int dtls1_new(SSL *s);
2275 void dtls1_free(SSL *s);
2276 int dtls1_clear(SSL *s);
2277 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
2278 __owur int dtls1_shutdown(SSL *s);
2280 __owur int dtls1_dispatch_alert(SSL *s);
2282 __owur int ssl_init_wbio_buffer(SSL *s);
2283 int ssl_free_wbio_buffer(SSL *s);
2285 __owur int tls1_change_cipher_state(SSL *s, int which);
2286 __owur int tls1_setup_key_block(SSL *s);
2287 __owur size_t tls1_final_finish_mac(SSL *s, const char *str, size_t slen,
2289 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
2290 unsigned char *p, size_t len,
2291 size_t *secret_size);
2292 __owur int tls13_setup_key_block(SSL *s);
2293 __owur size_t tls13_final_finish_mac(SSL *s, const char *str, size_t slen,
2295 __owur int tls13_change_cipher_state(SSL *s, int which);
2296 __owur int tls13_update_key(SSL *s, int send);
2297 __owur int tls13_hkdf_expand(SSL *s, const EVP_MD *md,
2298 const unsigned char *secret,
2299 const unsigned char *label, size_t labellen,
2300 const unsigned char *data, size_t datalen,
2301 unsigned char *out, size_t outlen);
2302 __owur int tls13_derive_key(SSL *s, const EVP_MD *md,
2303 const unsigned char *secret, unsigned char *key,
2305 __owur int tls13_derive_iv(SSL *s, const EVP_MD *md,
2306 const unsigned char *secret, unsigned char *iv,
2308 __owur int tls13_derive_finishedkey(SSL *s, const EVP_MD *md,
2309 const unsigned char *secret,
2310 unsigned char *fin, size_t finlen);
2311 int tls13_generate_secret(SSL *s, const EVP_MD *md,
2312 const unsigned char *prevsecret,
2313 const unsigned char *insecret,
2315 unsigned char *outsecret);
2316 __owur int tls13_generate_handshake_secret(SSL *s,
2317 const unsigned char *insecret,
2318 size_t insecretlen);
2319 __owur int tls13_generate_master_secret(SSL *s, unsigned char *out,
2320 unsigned char *prev, size_t prevlen,
2321 size_t *secret_size);
2322 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2323 const char *label, size_t llen,
2324 const unsigned char *p, size_t plen,
2326 __owur int tls13_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2327 const char *label, size_t llen,
2328 const unsigned char *context,
2329 size_t contextlen, int use_context);
2330 __owur int tls1_alert_code(int code);
2331 __owur int tls13_alert_code(int code);
2332 __owur int ssl3_alert_code(int code);
2334 # ifndef OPENSSL_NO_EC
2335 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
2338 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
2340 # ifndef OPENSSL_NO_EC
2342 __owur const TLS_GROUP_INFO *tls1_group_id_lookup(uint16_t curve_id);
2343 __owur uint16_t tls1_ec_nid2curve_id(int nid);
2344 __owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
2345 __owur uint16_t tls1_shared_group(SSL *s, int nmatch);
2346 __owur int tls1_set_groups(uint16_t **pext, size_t *pextlen,
2347 int *curves, size_t ncurves);
2348 __owur int tls1_set_groups_list(uint16_t **pext, size_t *pextlen,
2350 void tls1_get_formatlist(SSL *s, const unsigned char **pformats,
2351 size_t *num_formats);
2352 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2353 __owur EVP_PKEY *ssl_generate_pkey_group(uint16_t id);
2354 # endif /* OPENSSL_NO_EC */
2356 __owur int tls_curve_allowed(SSL *s, uint16_t curve, int op);
2357 __owur int tls1_get_curvelist(SSL *s, int sess, const uint16_t **pcurves,
2358 size_t *num_curves);
2360 __owur int tls1_set_server_sigalgs(SSL *s);
2362 /* Return codes for tls_get_ticket_from_client() and tls_decrypt_ticket() */
2363 typedef enum ticket_en {
2364 /* fatal error, malloc failure */
2365 TICKET_FATAL_ERR_MALLOC,
2366 /* fatal error, either from parsing or decrypting the ticket */
2367 TICKET_FATAL_ERR_OTHER,
2368 /* No ticket present */
2370 /* Empty ticket present */
2372 /* the ticket couldn't be decrypted */
2374 /* a ticket was successfully decrypted */
2376 /* same as above but the ticket needs to be renewed */
2377 TICKET_SUCCESS_RENEW
2380 __owur TICKET_RETURN tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
2382 __owur TICKET_RETURN tls_decrypt_ticket(SSL *s, const unsigned char *etick,
2384 const unsigned char *sess_id,
2385 size_t sesslen, SSL_SESSION **psess);
2387 __owur int tls_use_ticket(SSL *s);
2389 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2391 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2392 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen,
2394 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2396 void tls1_set_cert_validity(SSL *s);
2398 # ifndef OPENSSL_NO_CT
2399 __owur int ssl_validate_ct(SSL *s);
2402 # ifndef OPENSSL_NO_DH
2403 __owur DH *ssl_get_auto_dh(SSL *s);
2406 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2407 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex,
2410 int tls_choose_sigalg(SSL *s, int *al);
2412 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2413 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2414 __owur long ssl_get_algorithm2(SSL *s);
2415 __owur int tls12_copy_sigalgs(SSL *s, WPACKET *pkt,
2416 const uint16_t *psig, size_t psiglen);
2417 __owur int tls1_save_u16(PACKET *pkt, uint16_t **pdest, size_t *pdestlen);
2418 __owur int tls1_save_sigalgs(SSL *s, PACKET *pkt);
2419 __owur int tls1_process_sigalgs(SSL *s);
2420 __owur int tls1_set_peer_legacy_sigalg(SSL *s, const EVP_PKEY *pkey);
2421 __owur int tls1_lookup_md(const SIGALG_LOOKUP *lu, const EVP_MD **pmd);
2422 __owur size_t tls12_get_psigalgs(SSL *s, int sent, const uint16_t **psigs);
2423 __owur int tls12_check_peer_sigalg(SSL *s, uint16_t, EVP_PKEY *pkey);
2424 void ssl_set_client_disabled(SSL *s);
2425 __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op, int echde);
2427 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
2429 __owur const EVP_MD *ssl_md(int idx);
2430 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2431 __owur const EVP_MD *ssl_prf_md(SSL *s);
2434 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2435 * with |ssl|, if logging is enabled. It returns one on success and zero on
2436 * failure. The entry is identified by the first 8 bytes of
2437 * |encrypted_premaster|.
2439 __owur int ssl_log_rsa_client_key_exchange(SSL *ssl,
2440 const uint8_t *encrypted_premaster,
2441 size_t encrypted_premaster_len,
2442 const uint8_t *premaster,
2443 size_t premaster_len);
2446 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2447 * logging is available. It returns one on success and zero on failure. It tags
2448 * the entry with |label|.
2450 __owur int ssl_log_secret(SSL *ssl, const char *label,
2451 const uint8_t *secret, size_t secret_len);
2453 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2454 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2455 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2456 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2457 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2458 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2461 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2462 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2463 unsigned char *md_out,
2464 size_t *md_out_size,
2465 const unsigned char header[13],
2466 const unsigned char *data,
2467 size_t data_plus_mac_size,
2468 size_t data_plus_mac_plus_padding_size,
2469 const unsigned char *mac_secret,
2470 size_t mac_secret_length, char is_sslv3);
2472 __owur int srp_generate_server_master_secret(SSL *s);
2473 __owur int srp_generate_client_master_secret(SSL *s);
2474 __owur int srp_verify_server_param(SSL *s, int *al);
2476 /* statem/extensions_cust.c */
2478 custom_ext_method *custom_ext_find(const custom_ext_methods *exts,
2479 ENDPOINT role, unsigned int ext_type,
2482 void custom_ext_init(custom_ext_methods *meths);
2484 __owur int custom_ext_parse(SSL *s, unsigned int context, unsigned int ext_type,
2485 const unsigned char *ext_data, size_t ext_size,
2486 X509 *x, size_t chainidx, int *al);
2487 __owur int custom_ext_add(SSL *s, int context, WPACKET *pkt, X509 *x,
2488 size_t chainidx, int maxversion, int *al);
2490 __owur int custom_exts_copy(custom_ext_methods *dst,
2491 const custom_ext_methods *src);
2492 __owur int custom_exts_copy_flags(custom_ext_methods *dst,
2493 const custom_ext_methods *src);
2494 void custom_exts_free(custom_ext_methods *exts);
2496 void ssl_comp_free_compression_methods_int(void);
2498 # else /* OPENSSL_UNIT_TEST */
2500 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2501 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers