2 * Copyright 1995-2020 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 "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/rsa.h>
25 # include <openssl/dsa.h>
26 # include <openssl/err.h>
27 # include <openssl/ssl.h>
28 # include <openssl/async.h>
29 # include <openssl/symhacks.h>
30 # include <openssl/ct.h>
31 # include "record/record.h"
32 # include "statem/statem.h"
33 # include "internal/packet.h"
34 # include "internal/dane.h"
35 # include "internal/refcount.h"
36 # include "internal/tsan_assist.h"
37 # include "internal/bio.h"
38 # include "internal/ktls.h"
40 # ifdef OPENSSL_BUILD_SHLIBSSL
41 # undef OPENSSL_EXTERN
42 # define OPENSSL_EXTERN OPENSSL_EXPORT
45 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
46 l|=(((unsigned long)(*((c)++)))<< 8), \
47 l|=(((unsigned long)(*((c)++)))<<16), \
48 l|=(((unsigned long)(*((c)++)))<<24))
50 /* NOTE - c is not incremented as per c2l */
51 # define c2ln(c,l1,l2,n) { \
55 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
56 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
57 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
58 case 5: l2|=((unsigned long)(*(--(c)))); \
59 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
60 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
61 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
62 case 1: l1|=((unsigned long)(*(--(c)))); \
66 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
67 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
68 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
69 *((c)++)=(unsigned char)(((l)>>24)&0xff))
71 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
72 l|=((unsigned long)(*((c)++)))<<16, \
73 l|=((unsigned long)(*((c)++)))<< 8, \
74 l|=((unsigned long)(*((c)++))))
76 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
77 l|=((uint64_t)(*((c)++)))<<48, \
78 l|=((uint64_t)(*((c)++)))<<40, \
79 l|=((uint64_t)(*((c)++)))<<32, \
80 l|=((uint64_t)(*((c)++)))<<24, \
81 l|=((uint64_t)(*((c)++)))<<16, \
82 l|=((uint64_t)(*((c)++)))<< 8, \
83 l|=((uint64_t)(*((c)++))))
86 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
87 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
88 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
89 *((c)++)=(unsigned char)(((l) )&0xff))
91 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
93 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
94 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
95 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
96 *((c)++)=(unsigned char)(((l) )&0xff))
98 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
102 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
103 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
104 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
105 *((c)++)=(unsigned char)(((l) )&0xff))
107 /* NOTE - c is not incremented as per l2c */
108 # define l2cn(l1,l2,c,n) { \
111 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
112 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
113 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
114 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
115 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
116 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
117 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
118 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
122 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
123 (((unsigned int)((c)[1])) )),(c)+=2)
124 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
125 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
127 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
128 (((unsigned long)((c)[1]))<< 8)| \
129 (((unsigned long)((c)[2])) )),(c)+=3)
131 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
132 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
133 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
135 # define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION
136 # define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION
139 * DTLS version numbers are strange because they're inverted. Except for
140 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
142 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
143 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
144 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
145 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
146 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
150 * Define the Bitmasks for SSL_CIPHER.algorithms.
151 * This bits are used packed as dense as possible. If new methods/ciphers
152 * etc will be added, the bits a likely to change, so this information
153 * is for internal library use only, even though SSL_CIPHER.algorithms
154 * can be publicly accessed.
155 * Use the according functions for cipher management instead.
157 * The bit mask handling in the selection and sorting scheme in
158 * ssl_create_cipher_list() has only limited capabilities, reflecting
159 * that the different entities within are mutually exclusive:
160 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
163 /* Bits for algorithm_mkey (key exchange algorithm) */
164 /* RSA key exchange */
165 # define SSL_kRSA 0x00000001U
166 /* tmp DH key no DH cert */
167 # define SSL_kDHE 0x00000002U
169 # define SSL_kEDH SSL_kDHE
171 # define SSL_kECDHE 0x00000004U
173 # define SSL_kEECDH SSL_kECDHE
175 # define SSL_kPSK 0x00000008U
176 /* GOST key exchange */
177 # define SSL_kGOST 0x00000010U
179 # define SSL_kSRP 0x00000020U
181 # define SSL_kRSAPSK 0x00000040U
182 # define SSL_kECDHEPSK 0x00000080U
183 # define SSL_kDHEPSK 0x00000100U
184 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */
185 # define SSL_kGOST18 0x00000200U
189 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
191 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
192 # define SSL_kANY 0x00000000U
194 /* Bits for algorithm_auth (server authentication) */
196 # define SSL_aRSA 0x00000001U
198 # define SSL_aDSS 0x00000002U
199 /* no auth (i.e. use ADH or AECDH) */
200 # define SSL_aNULL 0x00000004U
202 # define SSL_aECDSA 0x00000008U
204 # define SSL_aPSK 0x00000010U
205 /* GOST R 34.10-2001 signature auth */
206 # define SSL_aGOST01 0x00000020U
208 # define SSL_aSRP 0x00000040U
209 /* GOST R 34.10-2012 signature auth */
210 # define SSL_aGOST12 0x00000080U
211 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
212 # define SSL_aANY 0x00000000U
213 /* All bits requiring a certificate */
215 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
217 /* Bits for algorithm_enc (symmetric encryption) */
218 # define SSL_DES 0x00000001U
219 # define SSL_3DES 0x00000002U
220 # define SSL_RC4 0x00000004U
221 # define SSL_RC2 0x00000008U
222 # define SSL_IDEA 0x00000010U
223 # define SSL_eNULL 0x00000020U
224 # define SSL_AES128 0x00000040U
225 # define SSL_AES256 0x00000080U
226 # define SSL_CAMELLIA128 0x00000100U
227 # define SSL_CAMELLIA256 0x00000200U
228 # define SSL_eGOST2814789CNT 0x00000400U
229 # define SSL_SEED 0x00000800U
230 # define SSL_AES128GCM 0x00001000U
231 # define SSL_AES256GCM 0x00002000U
232 # define SSL_AES128CCM 0x00004000U
233 # define SSL_AES256CCM 0x00008000U
234 # define SSL_AES128CCM8 0x00010000U
235 # define SSL_AES256CCM8 0x00020000U
236 # define SSL_eGOST2814789CNT12 0x00040000U
237 # define SSL_CHACHA20POLY1305 0x00080000U
238 # define SSL_ARIA128GCM 0x00100000U
239 # define SSL_ARIA256GCM 0x00200000U
240 # define SSL_MAGMA 0x00400000U
241 # define SSL_KUZNYECHIK 0x00800000U
243 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
244 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
245 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
246 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
247 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
248 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
249 # define SSL_ARIA (SSL_ARIAGCM)
250 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \
251 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \
252 | SSL_CAMELLIA256 | SSL_SEED)
254 /* Bits for algorithm_mac (symmetric authentication) */
256 # define SSL_MD5 0x00000001U
257 # define SSL_SHA1 0x00000002U
258 # define SSL_GOST94 0x00000004U
259 # define SSL_GOST89MAC 0x00000008U
260 # define SSL_SHA256 0x00000010U
261 # define SSL_SHA384 0x00000020U
262 /* Not a real MAC, just an indication it is part of cipher */
263 # define SSL_AEAD 0x00000040U
264 # define SSL_GOST12_256 0x00000080U
265 # define SSL_GOST89MAC12 0x00000100U
266 # define SSL_GOST12_512 0x00000200U
267 # define SSL_MAGMAOMAC 0x00000400U
268 # define SSL_KUZNYECHIKOMAC 0x00000800U
271 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
272 * sure to update this constant too
275 # define SSL_MD_MD5_IDX 0
276 # define SSL_MD_SHA1_IDX 1
277 # define SSL_MD_GOST94_IDX 2
278 # define SSL_MD_GOST89MAC_IDX 3
279 # define SSL_MD_SHA256_IDX 4
280 # define SSL_MD_SHA384_IDX 5
281 # define SSL_MD_GOST12_256_IDX 6
282 # define SSL_MD_GOST89MAC12_IDX 7
283 # define SSL_MD_GOST12_512_IDX 8
284 # define SSL_MD_MD5_SHA1_IDX 9
285 # define SSL_MD_SHA224_IDX 10
286 # define SSL_MD_SHA512_IDX 11
287 # define SSL_MD_MAGMAOMAC_IDX 12
288 # define SSL_MD_KUZNYECHIKOMAC_IDX 13
289 # define SSL_MAX_DIGEST 14
291 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
293 /* Bits for algorithm2 (handshake digests and other extra flags) */
295 /* Bits 0-7 are handshake MAC */
296 # define SSL_HANDSHAKE_MAC_MASK 0xFF
297 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
298 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
299 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
300 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
301 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
302 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
303 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
305 /* Bits 8-15 bits are PRF */
306 # define TLS1_PRF_DGST_SHIFT 8
307 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
308 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
309 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
310 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
311 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
312 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
313 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
316 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
317 * goes into algorithm2)
319 # define TLS1_STREAM_MAC 0x10000
321 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites
322 * (currently this also goes into algorithm2)
324 # define TLS1_TLSTREE 0x20000
326 # define SSL_STRONG_MASK 0x0000001FU
327 # define SSL_DEFAULT_MASK 0X00000020U
329 # define SSL_STRONG_NONE 0x00000001U
330 # define SSL_LOW 0x00000002U
331 # define SSL_MEDIUM 0x00000004U
332 # define SSL_HIGH 0x00000008U
333 # define SSL_FIPS 0x00000010U
334 # define SSL_NOT_DEFAULT 0x00000020U
336 /* we have used 0000003f - 26 bits left to go */
338 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
339 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
341 /* Check if an SSL structure is using DTLS */
342 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
344 /* Check if we are using TLSv1.3 */
345 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
346 && (s)->method->version >= TLS1_3_VERSION \
347 && (s)->method->version != TLS_ANY_VERSION)
349 # define SSL_TREAT_AS_TLS13(s) \
350 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
351 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
352 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
353 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
354 || (s)->hello_retry_request == SSL_HRR_PENDING)
356 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3.tmp.finish_md_len == 0 \
357 || (s)->s3.tmp.peer_finish_md_len == 0)
359 /* See if we need explicit IV */
360 # define SSL_USE_EXPLICIT_IV(s) \
361 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
363 * See if we use signature algorithms extension and signature algorithm
366 # define SSL_USE_SIGALGS(s) \
367 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
369 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
370 * apply to others in future.
372 # define SSL_USE_TLS1_2_CIPHERS(s) \
373 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
375 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
376 * flags because it may not be set to correct version yet.
378 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
379 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
380 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
382 * Determine if a client should send signature algorithms extension:
383 * as with TLS1.2 cipher we can't rely on method flags.
385 # define SSL_CLIENT_USE_SIGALGS(s) \
386 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
388 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
389 (((value) >= TLSEXT_max_fragment_length_512) && \
390 ((value) <= TLSEXT_max_fragment_length_4096))
391 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
392 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
393 # define GET_MAX_FRAGMENT_LENGTH(session) \
394 (512U << (session->ext.max_fragment_len_mode - 1))
396 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
397 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
399 /* Mostly for SSLv3 */
400 # define SSL_PKEY_RSA 0
401 # define SSL_PKEY_RSA_PSS_SIGN 1
402 # define SSL_PKEY_DSA_SIGN 2
403 # define SSL_PKEY_ECC 3
404 # define SSL_PKEY_GOST01 4
405 # define SSL_PKEY_GOST12_256 5
406 # define SSL_PKEY_GOST12_512 6
407 # define SSL_PKEY_ED25519 7
408 # define SSL_PKEY_ED448 8
409 # define SSL_PKEY_NUM 9
411 # define SSL_ENC_DES_IDX 0
412 # define SSL_ENC_3DES_IDX 1
413 # define SSL_ENC_RC4_IDX 2
414 # define SSL_ENC_RC2_IDX 3
415 # define SSL_ENC_IDEA_IDX 4
416 # define SSL_ENC_NULL_IDX 5
417 # define SSL_ENC_AES128_IDX 6
418 # define SSL_ENC_AES256_IDX 7
419 # define SSL_ENC_CAMELLIA128_IDX 8
420 # define SSL_ENC_CAMELLIA256_IDX 9
421 # define SSL_ENC_GOST89_IDX 10
422 # define SSL_ENC_SEED_IDX 11
423 # define SSL_ENC_AES128GCM_IDX 12
424 # define SSL_ENC_AES256GCM_IDX 13
425 # define SSL_ENC_AES128CCM_IDX 14
426 # define SSL_ENC_AES256CCM_IDX 15
427 # define SSL_ENC_AES128CCM8_IDX 16
428 # define SSL_ENC_AES256CCM8_IDX 17
429 # define SSL_ENC_GOST8912_IDX 18
430 # define SSL_ENC_CHACHA_IDX 19
431 # define SSL_ENC_ARIA128GCM_IDX 20
432 # define SSL_ENC_ARIA256GCM_IDX 21
433 # define SSL_ENC_MAGMA_IDX 22
434 # define SSL_ENC_KUZNYECHIK_IDX 23
435 # define SSL_ENC_NUM_IDX 24
438 * SSL_kRSA <- RSA_ENC
439 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
440 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
441 * SSL_aRSA <- RSA_ENC | RSA_SIGN
442 * SSL_aDSS <- DSA_SIGN
446 #define CERT_INVALID 0
447 #define CERT_PUBLIC_KEY 1
448 #define CERT_PRIVATE_KEY 2
451 /* Post-Handshake Authentication state */
454 SSL_PHA_EXT_SENT
, /* client-side only: extension sent */
455 SSL_PHA_EXT_RECEIVED
, /* server-side only: extension received */
456 SSL_PHA_REQUEST_PENDING
, /* server-side only: request pending */
457 SSL_PHA_REQUESTED
/* request received by client, or sent by server */
460 /* CipherSuite length. SSLv3 and all TLS versions. */
461 # define TLS_CIPHER_LEN 2
462 /* used to hold info on the particular ciphers used */
463 struct ssl_cipher_st
{
465 const char *name
; /* text name */
466 const char *stdname
; /* RFC name */
467 uint32_t id
; /* id, 4 bytes, first is version */
469 * changed in 1.0.0: these four used to be portions of a single value
472 uint32_t algorithm_mkey
; /* key exchange algorithm */
473 uint32_t algorithm_auth
; /* server authentication */
474 uint32_t algorithm_enc
; /* symmetric encryption */
475 uint32_t algorithm_mac
; /* symmetric authentication */
476 int min_tls
; /* minimum SSL/TLS protocol version */
477 int max_tls
; /* maximum SSL/TLS protocol version */
478 int min_dtls
; /* minimum DTLS protocol version */
479 int max_dtls
; /* maximum DTLS protocol version */
480 uint32_t algo_strength
; /* strength and export flags */
481 uint32_t algorithm2
; /* Extra flags */
482 int32_t strength_bits
; /* Number of bits really used */
483 uint32_t alg_bits
; /* Number of bits for algorithm */
486 /* Used to hold SSL/TLS functions */
487 struct ssl_method_st
{
491 int (*ssl_new
) (SSL
*s
);
492 int (*ssl_clear
) (SSL
*s
);
493 void (*ssl_free
) (SSL
*s
);
494 int (*ssl_accept
) (SSL
*s
);
495 int (*ssl_connect
) (SSL
*s
);
496 int (*ssl_read
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
497 int (*ssl_peek
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
498 int (*ssl_write
) (SSL
*s
, const void *buf
, size_t len
, size_t *written
);
499 int (*ssl_shutdown
) (SSL
*s
);
500 int (*ssl_renegotiate
) (SSL
*s
);
501 int (*ssl_renegotiate_check
) (SSL
*s
, int);
502 int (*ssl_read_bytes
) (SSL
*s
, int type
, int *recvd_type
,
503 unsigned char *buf
, size_t len
, int peek
,
505 int (*ssl_write_bytes
) (SSL
*s
, int type
, const void *buf_
, size_t len
,
507 int (*ssl_dispatch_alert
) (SSL
*s
);
508 long (*ssl_ctrl
) (SSL
*s
, int cmd
, long larg
, void *parg
);
509 long (*ssl_ctx_ctrl
) (SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
);
510 const SSL_CIPHER
*(*get_cipher_by_char
) (const unsigned char *ptr
);
511 int (*put_cipher_by_char
) (const SSL_CIPHER
*cipher
, WPACKET
*pkt
,
513 size_t (*ssl_pending
) (const SSL
*s
);
514 int (*num_ciphers
) (void);
515 const SSL_CIPHER
*(*get_cipher
) (unsigned ncipher
);
516 long (*get_timeout
) (void);
517 const struct ssl3_enc_method
*ssl3_enc
; /* Extra SSLv3/TLS stuff */
518 int (*ssl_version
) (void);
519 long (*ssl_callback_ctrl
) (SSL
*s
, int cb_id
, void (*fp
) (void));
520 long (*ssl_ctx_callback_ctrl
) (SSL_CTX
*s
, int cb_id
, void (*fp
) (void));
524 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
525 * consistency, even in the event of OPENSSL_NO_PSK being defined.
527 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512
530 * Lets make this into an ASN.1 type structure as follows
531 * SSL_SESSION_ID ::= SEQUENCE {
532 * version INTEGER, -- structure version number
533 * SSLversion INTEGER, -- SSL version number
534 * Cipher OCTET STRING, -- the 3 byte cipher ID
535 * Session_ID OCTET STRING, -- the Session ID
536 * Master_key OCTET STRING, -- the master key
537 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
538 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
539 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
540 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
541 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
542 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
543 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
544 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
545 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
546 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
547 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
548 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
549 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
550 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
552 * Look in ssl/ssl_asn1.c for more details
553 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
555 struct ssl_session_st
{
556 int ssl_version
; /* what ssl version session info is being kept
558 size_t master_key_length
;
560 /* TLSv1.3 early_secret used for external PSKs */
561 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
563 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
566 unsigned char master_key
[TLS13_MAX_RESUMPTION_PSK_LENGTH
];
567 /* session_id - valid? */
568 size_t session_id_length
;
569 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
571 * this is used to determine whether the session is being reused in the
572 * appropriate context. It is up to the application to set this, via
575 size_t sid_ctx_length
;
576 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
577 # ifndef OPENSSL_NO_PSK
578 char *psk_identity_hint
;
582 * Used to indicate that session resumption is not allowed. Applications
583 * can also set this bit for a new session via not_resumable_session_cb
584 * to disable session caching and tickets.
587 /* This is the cert and type for the other end. */
590 /* Certificate chain peer sent. */
591 STACK_OF(X509
) *peer_chain
;
593 * when app_verify_callback accepts a session where the peer's
594 * certificate is not ok, we must remember the error for session reuse:
596 long verify_result
; /* only for servers */
597 CRYPTO_REF_COUNT references
;
600 unsigned int compress_meth
; /* Need to lookup the method */
601 const SSL_CIPHER
*cipher
;
602 unsigned long cipher_id
; /* when ASN.1 loaded, this needs to be used to
603 * load the 'cipher' structure */
604 CRYPTO_EX_DATA ex_data
; /* application specific data */
606 * These are used to make removal of session-ids more efficient and to
607 * implement a maximum cache size.
609 struct ssl_session_st
*prev
, *next
;
614 unsigned char *tick
; /* Session ticket */
615 size_t ticklen
; /* Session ticket length */
616 /* Session lifetime hint in seconds */
617 unsigned long tick_lifetime_hint
;
618 uint32_t tick_age_add
;
619 /* Max number of bytes that can be sent as early data */
620 uint32_t max_early_data
;
621 /* The ALPN protocol selected for this session */
622 unsigned char *alpn_selected
;
623 size_t alpn_selected_len
;
625 * Maximum Fragment Length as per RFC 4366.
626 * If this value does not contain RFC 4366 allowed values (1-4) then
627 * either the Maximum Fragment Length Negotiation failed or was not
630 uint8_t max_fragment_len_mode
;
632 # ifndef OPENSSL_NO_SRP
635 unsigned char *ticket_appdata
;
636 size_t ticket_appdata_len
;
641 /* Extended master secret support */
642 # define SSL_SESS_FLAG_EXTMS 0x1
644 # ifndef OPENSSL_NO_SRP
646 typedef struct srp_ctx_st
{
647 /* param for all the callbacks */
649 /* set client Hello login callback */
650 int (*TLS_ext_srp_username_callback
) (SSL
*, int *, void *);
651 /* set SRP N/g param callback for verification */
652 int (*SRP_verify_param_callback
) (SSL
*, void *);
653 /* set SRP client passwd callback */
654 char *(*SRP_give_srp_client_pwd_callback
) (SSL
*, void *);
656 BIGNUM
*N
, *g
, *s
, *B
, *A
;
660 unsigned long srp_Mask
;
666 SSL_EARLY_DATA_NONE
= 0,
667 SSL_EARLY_DATA_CONNECT_RETRY
,
668 SSL_EARLY_DATA_CONNECTING
,
669 SSL_EARLY_DATA_WRITE_RETRY
,
670 SSL_EARLY_DATA_WRITING
,
671 SSL_EARLY_DATA_WRITE_FLUSH
,
672 SSL_EARLY_DATA_UNAUTH_WRITING
,
673 SSL_EARLY_DATA_FINISHED_WRITING
,
674 SSL_EARLY_DATA_ACCEPT_RETRY
,
675 SSL_EARLY_DATA_ACCEPTING
,
676 SSL_EARLY_DATA_READ_RETRY
,
677 SSL_EARLY_DATA_READING
,
678 SSL_EARLY_DATA_FINISHED_READING
679 } SSL_EARLY_DATA_STATE
;
682 * We check that the amount of unreadable early data doesn't exceed
683 * max_early_data. max_early_data is given in plaintext bytes. However if it is
684 * unreadable then we only know the number of ciphertext bytes. We also don't
685 * know how much the overhead should be because it depends on the ciphersuite.
686 * We make a small allowance. We assume 5 records of actual data plus the end
687 * of early data alert record. Each record has a tag and a content type byte.
688 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
689 * content of the alert record either which is 2 bytes.
691 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
694 * The allowance we have between the client's calculated ticket age and our own.
695 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
696 * client's age calculation is different by more than this than our own then we
697 * do not allow that ticket for early_data.
699 # define TICKET_AGE_ALLOWANCE (10 * 1000)
701 #define MAX_COMPRESSIONS_SIZE 255
709 typedef struct raw_extension_st
{
710 /* Raw packet data for the extension */
712 /* Set to 1 if the extension is present or 0 otherwise */
714 /* Set to 1 if we have already parsed the extension or 0 otherwise */
716 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
718 /* Track what order extensions are received in (0-based). */
719 size_t received_order
;
724 unsigned int legacy_version
;
725 unsigned char random
[SSL3_RANDOM_SIZE
];
726 size_t session_id_len
;
727 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
728 size_t dtls_cookie_len
;
729 unsigned char dtls_cookie
[DTLS1_COOKIE_LENGTH
];
731 size_t compressions_len
;
732 unsigned char compressions
[MAX_COMPRESSIONS_SIZE
];
734 size_t pre_proc_exts_len
;
735 RAW_EXTENSION
*pre_proc_exts
;
739 * Extension index values NOTE: Any updates to these defines should be mirrored
740 * with equivalent updates to ext_defs in extensions.c
742 typedef enum tlsext_index_en
{
743 TLSEXT_IDX_renegotiate
,
744 TLSEXT_IDX_server_name
,
745 TLSEXT_IDX_max_fragment_length
,
747 TLSEXT_IDX_ec_point_formats
,
748 TLSEXT_IDX_supported_groups
,
749 TLSEXT_IDX_session_ticket
,
750 TLSEXT_IDX_status_request
,
751 TLSEXT_IDX_next_proto_neg
,
752 TLSEXT_IDX_application_layer_protocol_negotiation
,
754 TLSEXT_IDX_encrypt_then_mac
,
755 TLSEXT_IDX_signed_certificate_timestamp
,
756 TLSEXT_IDX_extended_master_secret
,
757 TLSEXT_IDX_signature_algorithms_cert
,
758 TLSEXT_IDX_post_handshake_auth
,
759 TLSEXT_IDX_signature_algorithms
,
760 TLSEXT_IDX_supported_versions
,
761 TLSEXT_IDX_psk_kex_modes
,
762 TLSEXT_IDX_key_share
,
764 TLSEXT_IDX_cryptopro_bug
,
765 TLSEXT_IDX_early_data
,
766 TLSEXT_IDX_certificate_authorities
,
769 /* Dummy index - must always be the last entry */
770 TLSEXT_IDX_num_builtins
773 DEFINE_LHASH_OF(SSL_SESSION
);
774 /* Needed in ssl_cert.c */
775 DEFINE_LHASH_OF(X509_NAME
);
777 # define TLSEXT_KEYNAME_LENGTH 16
778 # define TLSEXT_TICK_KEY_LENGTH 32
780 typedef struct ssl_ctx_ext_secure_st
{
781 unsigned char tick_hmac_key
[TLSEXT_TICK_KEY_LENGTH
];
782 unsigned char tick_aes_key
[TLSEXT_TICK_KEY_LENGTH
];
783 } SSL_CTX_EXT_SECURE
;
786 * Helper function for HMAC
787 * The structure should be considered opaque, it will change once the low
788 * level deprecated calls are removed. At that point it can be replaced
789 * by EVP_MAC_CTX and most of the functions converted to macros or inlined
792 typedef struct ssl_hmac_st
{
794 # ifndef OPENSSL_NO_DEPRECATED_3_0
799 SSL_HMAC
*ssl_hmac_new(const SSL_CTX
*ctx
);
800 void ssl_hmac_free(SSL_HMAC
*ctx
);
801 # ifndef OPENSSL_NO_DEPRECATED_3_0
802 HMAC_CTX
*ssl_hmac_get0_HMAC_CTX(SSL_HMAC
*ctx
);
804 EVP_MAC_CTX
*ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC
*ctx
);
805 int ssl_hmac_init(SSL_HMAC
*ctx
, void *key
, size_t len
, char *md
);
806 int ssl_hmac_update(SSL_HMAC
*ctx
, const unsigned char *data
, size_t len
);
807 int ssl_hmac_final(SSL_HMAC
*ctx
, unsigned char *md
, size_t *len
,
809 size_t ssl_hmac_size(const SSL_HMAC
*ctx
);
811 typedef struct tls_group_info_st
{
812 char *tlsname
; /* Curve Name as in TLS specs */
813 char *realname
; /* Curve Name according to provider */
814 char *algorithm
; /* Algorithm name to fetch */
815 unsigned int secbits
; /* Bits of security (from SP800-57) */
816 uint16_t group_id
; /* Group ID */
817 int mintls
; /* Minimum TLS version, -1 unsupported */
818 int maxtls
; /* Maximum TLS version (or 0 for undefined) */
819 int mindtls
; /* Minimum DTLS version, -1 unsupported */
820 int maxdtls
; /* Maximum DTLS version (or 0 for undefined) */
824 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
825 # define TLS_GROUP_CURVE_PRIME 0x00000001U
826 # define TLS_GROUP_CURVE_CHAR2 0x00000002U
827 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U
828 # define TLS_GROUP_FFDHE 0x00000008U
829 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
831 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
836 const SSL_METHOD
*method
;
837 STACK_OF(SSL_CIPHER
) *cipher_list
;
838 /* same as above but sorted for lookup */
839 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
840 /* TLSv1.3 specific ciphersuites */
841 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
;
842 struct x509_store_st
/* X509_STORE */ *cert_store
;
843 LHASH_OF(SSL_SESSION
) *sessions
;
845 * Most session-ids that will be cached, default is
846 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
848 size_t session_cache_size
;
849 struct ssl_session_st
*session_cache_head
;
850 struct ssl_session_st
*session_cache_tail
;
852 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
853 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
854 * means only SSL_accept will cache SSL_SESSIONS.
856 uint32_t session_cache_mode
;
858 * If timeout is not 0, it is the default timeout value set when
859 * SSL_new() is called. This has been put in to make life easier to set
862 long session_timeout
;
864 * If this callback is not null, it will be called each time a session id
865 * is added to the cache. If this function returns 1, it means that the
866 * callback will do a SSL_SESSION_free() when it has finished using it.
867 * Otherwise, on 0, it means the callback has finished with it. If
868 * remove_session_cb is not null, it will be called when a session-id is
869 * removed from the cache. After the call, OpenSSL will
870 * SSL_SESSION_free() it.
872 int (*new_session_cb
) (struct ssl_st
*ssl
, SSL_SESSION
*sess
);
873 void (*remove_session_cb
) (struct ssl_ctx_st
*ctx
, SSL_SESSION
*sess
);
874 SSL_SESSION
*(*get_session_cb
) (struct ssl_st
*ssl
,
875 const unsigned char *data
, int len
,
878 TSAN_QUALIFIER
int sess_connect
; /* SSL new conn - started */
879 TSAN_QUALIFIER
int sess_connect_renegotiate
; /* SSL reneg - requested */
880 TSAN_QUALIFIER
int sess_connect_good
; /* SSL new conne/reneg - finished */
881 TSAN_QUALIFIER
int sess_accept
; /* SSL new accept - started */
882 TSAN_QUALIFIER
int sess_accept_renegotiate
; /* SSL reneg - requested */
883 TSAN_QUALIFIER
int sess_accept_good
; /* SSL accept/reneg - finished */
884 TSAN_QUALIFIER
int sess_miss
; /* session lookup misses */
885 TSAN_QUALIFIER
int sess_timeout
; /* reuse attempt on timeouted session */
886 TSAN_QUALIFIER
int sess_cache_full
; /* session removed due to full cache */
887 TSAN_QUALIFIER
int sess_hit
; /* session reuse actually done */
888 TSAN_QUALIFIER
int sess_cb_hit
; /* session-id that was not in
889 * the cache was passed back via
890 * the callback. This indicates
891 * that the application is
892 * supplying session-id's from
893 * other processes - spooky
897 CRYPTO_REF_COUNT references
;
899 /* if defined, these override the X509_verify_cert() calls */
900 int (*app_verify_callback
) (X509_STORE_CTX
*, void *);
901 void *app_verify_arg
;
903 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
904 * ('app_verify_callback' was called with just one argument)
907 /* Default password callback. */
908 pem_password_cb
*default_passwd_callback
;
910 /* Default password callback user data. */
911 void *default_passwd_callback_userdata
;
913 /* get client cert callback */
914 int (*client_cert_cb
) (SSL
*ssl
, X509
**x509
, EVP_PKEY
**pkey
);
916 /* cookie generate callback */
917 int (*app_gen_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
918 unsigned int *cookie_len
);
920 /* verify cookie callback */
921 int (*app_verify_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
922 unsigned int cookie_len
);
924 /* TLS1.3 app-controlled cookie generate callback */
925 int (*gen_stateless_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
928 /* TLS1.3 verify app-controlled cookie callback */
929 int (*verify_stateless_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
932 CRYPTO_EX_DATA ex_data
;
934 const EVP_MD
*md5
; /* For SSLv3/TLSv1 'ssl3-md5' */
935 const EVP_MD
*sha1
; /* For SSLv3/TLSv1 'ssl3-sha1' */
937 STACK_OF(X509
) *extra_certs
;
938 STACK_OF(SSL_COMP
) *comp_methods
; /* stack of SSL_COMP, SSLv3/TLSv1 */
940 /* Default values used when no per-SSL value is defined follow */
942 /* used if SSL's info_callback is NULL */
943 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
946 * What we put in certificate_authorities extension for TLS 1.3
947 * (ClientHello and CertificateRequest) or just client cert requests for
948 * earlier versions. If client_ca_names is populated then it is only used
949 * for client cert requests, and in preference to ca_names.
951 STACK_OF(X509_NAME
) *ca_names
;
952 STACK_OF(X509_NAME
) *client_ca_names
;
955 * Default values to use in SSL structures follow (these are copied by
961 int min_proto_version
;
962 int max_proto_version
;
963 size_t max_cert_list
;
965 struct cert_st
/* CERT */ *cert
;
968 /* callback that allows applications to peek at protocol messages */
969 void (*msg_callback
) (int write_p
, int version
, int content_type
,
970 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
971 void *msg_callback_arg
;
973 uint32_t verify_mode
;
974 size_t sid_ctx_length
;
975 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
976 /* called 'verify_callback' in the SSL */
977 int (*default_verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
979 /* Default generate session ID callback. */
980 GEN_SESSION_CB generate_session_id
;
982 X509_VERIFY_PARAM
*param
;
986 # ifndef OPENSSL_NO_CT
987 CTLOG_STORE
*ctlog_store
; /* CT Log Store */
989 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
990 * If they are not, the connection should be aborted.
992 ssl_ct_validation_cb ct_validation_callback
;
993 void *ct_validation_callback_arg
;
997 * If we're using more than one pipeline how should we divide the data
998 * up between the pipes?
1000 size_t split_send_fragment
;
1002 * Maximum amount of data to send in one fragment. actual record size can
1003 * be more than this due to padding and MAC overheads.
1005 size_t max_send_fragment
;
1007 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1008 size_t max_pipelines
;
1010 /* The default read buffer length to use (0 means not set) */
1011 size_t default_read_buf_len
;
1013 # ifndef OPENSSL_NO_ENGINE
1015 * Engine to pass requests for client certs to
1017 ENGINE
*client_cert_engine
;
1020 /* ClientHello callback. Mostly for extensions, but not entirely. */
1021 SSL_client_hello_cb_fn client_hello_cb
;
1022 void *client_hello_cb_arg
;
1024 /* TLS extensions. */
1026 /* TLS extensions servername callback */
1027 int (*servername_cb
) (SSL
*, int *, void *);
1028 void *servername_arg
;
1029 /* RFC 4507 session ticket keys */
1030 unsigned char tick_key_name
[TLSEXT_KEYNAME_LENGTH
];
1031 SSL_CTX_EXT_SECURE
*secure
;
1032 # ifndef OPENSSL_NO_DEPRECATED_3_0
1033 /* Callback to support customisation of ticket key setting */
1034 int (*ticket_key_cb
) (SSL
*ssl
,
1035 unsigned char *name
, unsigned char *iv
,
1036 EVP_CIPHER_CTX
*ectx
, HMAC_CTX
*hctx
, int enc
);
1038 int (*ticket_key_evp_cb
) (SSL
*ssl
,
1039 unsigned char *name
, unsigned char *iv
,
1040 EVP_CIPHER_CTX
*ectx
, EVP_MAC_CTX
*hctx
,
1043 /* certificate status request info */
1044 /* Callback for status request */
1045 int (*status_cb
) (SSL
*ssl
, void *arg
);
1047 /* ext status type used for CSR extension (OCSP Stapling) */
1049 /* RFC 4366 Maximum Fragment Length Negotiation */
1050 uint8_t max_fragment_len_mode
;
1052 # ifndef OPENSSL_NO_EC
1053 /* EC extension values inherited by SSL structure */
1054 size_t ecpointformats_len
;
1055 unsigned char *ecpointformats
;
1056 # endif /* OPENSSL_NO_EC */
1058 size_t supportedgroups_len
;
1059 uint16_t *supportedgroups
;
1062 * ALPN information (we are in the process of transitioning from NPN to
1067 * For a server, this contains a callback function that allows the
1068 * server to select the protocol for the connection.
1069 * out: on successful return, this must point to the raw protocol
1070 * name (without the length prefix).
1071 * outlen: on successful return, this contains the length of |*out|.
1072 * in: points to the client's list of supported protocols in
1074 * inlen: the length of |in|.
1076 int (*alpn_select_cb
) (SSL
*s
,
1077 const unsigned char **out
,
1078 unsigned char *outlen
,
1079 const unsigned char *in
,
1080 unsigned int inlen
, void *arg
);
1081 void *alpn_select_cb_arg
;
1084 * For a client, this contains the list of supported protocols in wire
1087 unsigned char *alpn
;
1090 # ifndef OPENSSL_NO_NEXTPROTONEG
1091 /* Next protocol negotiation information */
1094 * For a server, this contains a callback function by which the set of
1095 * advertised protocols can be provided.
1097 SSL_CTX_npn_advertised_cb_func npn_advertised_cb
;
1098 void *npn_advertised_cb_arg
;
1100 * For a client, this contains a callback function that selects the next
1101 * protocol from the list provided by the server.
1103 SSL_CTX_npn_select_cb_func npn_select_cb
;
1104 void *npn_select_cb_arg
;
1107 unsigned char cookie_hmac_key
[SHA256_DIGEST_LENGTH
];
1110 # ifndef OPENSSL_NO_PSK
1111 SSL_psk_client_cb_func psk_client_callback
;
1112 SSL_psk_server_cb_func psk_server_callback
;
1114 SSL_psk_find_session_cb_func psk_find_session_cb
;
1115 SSL_psk_use_session_cb_func psk_use_session_cb
;
1117 # ifndef OPENSSL_NO_SRP
1118 SRP_CTX srp_ctx
; /* ctx for SRP authentication */
1121 /* Shared DANE context */
1122 struct dane_ctx_st dane
;
1124 # ifndef OPENSSL_NO_SRTP
1125 /* SRTP profiles we are willing to do from RFC 5764 */
1126 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1129 * Callback for disabling session caching and ticket support on a session
1130 * basis, depending on the chosen cipher.
1132 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1134 CRYPTO_RWLOCK
*lock
;
1137 * Callback for logging key material for use with debugging tools like
1138 * Wireshark. The callback should log `line` followed by a newline.
1140 SSL_CTX_keylog_cb_func keylog_callback
;
1143 * The maximum number of bytes advertised in session tickets that can be
1144 * sent as early data.
1146 uint32_t max_early_data
;
1149 * The maximum number of bytes of early data that a server will tolerate
1150 * (which should be at least as much as max_early_data).
1152 uint32_t recv_max_early_data
;
1154 /* TLS1.3 padding callback */
1155 size_t (*record_padding_cb
)(SSL
*s
, int type
, size_t len
, void *arg
);
1156 void *record_padding_arg
;
1157 size_t block_padding
;
1159 /* Session ticket appdata */
1160 SSL_CTX_generate_session_ticket_fn generate_ticket_cb
;
1161 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb
;
1162 void *ticket_cb_data
;
1164 /* The number of TLS1.3 tickets to automatically send */
1167 /* Callback to determine if early_data is acceptable or not */
1168 SSL_allow_early_data_cb_fn allow_early_data_cb
;
1169 void *allow_early_data_cb_data
;
1171 /* Do we advertise Post-handshake auth support? */
1174 /* Callback for SSL async handling */
1175 SSL_async_callback_fn async_cb
;
1180 const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
];
1181 const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
];
1182 size_t ssl_mac_secret_size
[SSL_MD_NUM_IDX
];
1184 /* Cache of all sigalgs we know and whether they are available or not */
1185 struct sigalg_lookup_st
*sigalg_lookup_cache
;
1187 TLS_GROUP_INFO
*group_list
;
1188 size_t group_list_len
;
1189 size_t group_list_max_len
;
1192 typedef struct cert_pkey_st CERT_PKEY
;
1196 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1201 const SSL_METHOD
*method
;
1203 * There are 2 BIO's even though they are normally both the same. This
1204 * is so data can be read and written to different handlers
1206 /* used by SSL_read */
1208 /* used by SSL_write */
1210 /* used during session-id reuse to concatenate messages */
1213 * This holds a variable that indicates what we were doing when a 0 or -1
1214 * is returned. This is needed for non-blocking IO so we know what
1215 * request needs re-doing when in SSL_accept or SSL_connect
1218 int (*handshake_func
) (SSL
*);
1220 * Imagine that here's a boolean member "init" that is switched as soon
1221 * as SSL_set_{accept/connect}_state is called for the first time, so
1222 * that "state" and "handshake_func" are properly initialized. But as
1223 * handshake_func is == 0 until then, we use this test instead of an
1226 /* are we the server side? */
1229 * Generate a new session or reuse an old one.
1230 * NB: For servers, the 'new' session may actually be a previously
1231 * cached session or even the previous session unless
1232 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1235 /* don't send shutdown packets */
1237 /* we have shut things down, 0x01 sent, 0x02 for received */
1241 SSL_EARLY_DATA_STATE early_data_state
;
1242 BUF_MEM
*init_buf
; /* buffer used during init */
1243 void *init_msg
; /* pointer to handshake message body, set by
1244 * ssl3_get_message() */
1245 size_t init_num
; /* amount read/written */
1246 size_t init_off
; /* amount read/written */
1250 size_t read_mac_secret_size
;
1251 unsigned char read_mac_secret
[EVP_MAX_MD_SIZE
];
1252 size_t write_mac_secret_size
;
1253 unsigned char write_mac_secret
[EVP_MAX_MD_SIZE
];
1254 unsigned char server_random
[SSL3_RANDOM_SIZE
];
1255 unsigned char client_random
[SSL3_RANDOM_SIZE
];
1256 /* flags for countermeasure against known-IV weakness */
1257 int need_empty_fragments
;
1258 int empty_fragment_done
;
1259 /* used during startup, digest all incoming/outgoing packets */
1260 BIO
*handshake_buffer
;
1262 * When handshake digest is determined, buffer is hashed and
1263 * freed and MD_CTX for the required digest is stored here.
1265 EVP_MD_CTX
*handshake_dgst
;
1267 * Set whenever an expected ChangeCipherSpec message is processed.
1268 * Unset when the peer's Finished message is received.
1269 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1271 int change_cipher_spec
;
1275 * we allow one fatal and one warning alert to be outstanding, send close
1276 * alert via the warning alert
1279 unsigned char send_alert
[2];
1281 * This flag is set when we should renegotiate ASAP, basically when there
1282 * is no more data in the read or write buffers
1285 int total_renegotiations
;
1286 int num_renegotiations
;
1287 int in_read_app_data
;
1289 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1290 unsigned char finish_md
[EVP_MAX_MD_SIZE
* 2];
1291 size_t finish_md_len
;
1292 unsigned char peer_finish_md
[EVP_MAX_MD_SIZE
* 2];
1293 size_t peer_finish_md_len
;
1294 size_t message_size
;
1296 /* used to hold the new cipher we are going to use */
1297 const SSL_CIPHER
*new_cipher
;
1298 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1299 EVP_PKEY
*pkey
; /* holds short lived DH/ECDH key */
1301 /* used for certificate requests */
1303 /* Certificate types in certificate request message. */
1306 /* Certificate authorities list peer sent */
1307 STACK_OF(X509_NAME
) *peer_ca_names
;
1308 size_t key_block_length
;
1309 unsigned char *key_block
;
1310 const EVP_CIPHER
*new_sym_enc
;
1311 const EVP_MD
*new_hash
;
1312 int new_mac_pkey_type
;
1313 size_t new_mac_secret_size
;
1314 # ifndef OPENSSL_NO_COMP
1315 const SSL_COMP
*new_compression
;
1317 char *new_compression
;
1320 /* Raw values of the cipher list from a client */
1321 unsigned char *ciphers_raw
;
1322 size_t ciphers_rawlen
;
1323 /* Temporary storage for premaster secret */
1326 # ifndef OPENSSL_NO_PSK
1327 /* Temporary storage for PSK key */
1331 /* Signature algorithm we actually use */
1332 const struct sigalg_lookup_st
*sigalg
;
1333 /* Pointer to certificate we use */
1336 * signature algorithms peer reports: e.g. supported signature
1337 * algorithms extension for server or as part of a certificate
1338 * request for client.
1339 * Keep track of the algorithms for TLS and X.509 usage separately.
1341 uint16_t *peer_sigalgs
;
1342 uint16_t *peer_cert_sigalgs
;
1343 /* Size of above arrays */
1344 size_t peer_sigalgslen
;
1345 size_t peer_cert_sigalgslen
;
1346 /* Sigalg peer actually uses */
1347 const struct sigalg_lookup_st
*peer_sigalg
;
1349 * Set if corresponding CERT_PKEY can be used with current
1350 * SSL session: e.g. appropriate curve, signature algorithms etc.
1351 * If zero it can't be used at all.
1353 uint32_t valid_flags
[SSL_PKEY_NUM
];
1355 * For servers the following masks are for the key and auth algorithms
1356 * that are supported by the certs below. For clients they are masks of
1357 * *disabled* algorithms based on the current session.
1362 * The following are used by the client to see if a cipher is allowed or
1363 * not. It contains the minimum and maximum version the client's using
1364 * based on what it knows so far.
1370 /* Connection binding to prevent renegotiation attacks */
1371 unsigned char previous_client_finished
[EVP_MAX_MD_SIZE
];
1372 size_t previous_client_finished_len
;
1373 unsigned char previous_server_finished
[EVP_MAX_MD_SIZE
];
1374 size_t previous_server_finished_len
;
1375 int send_connection_binding
; /* TODOEKR */
1377 # ifndef OPENSSL_NO_NEXTPROTONEG
1379 * Set if we saw the Next Protocol Negotiation extension from our peer.
1385 * ALPN information (we are in the process of transitioning from NPN to
1390 * In a server these point to the selected ALPN protocol after the
1391 * ClientHello has been processed. In a client these contain the protocol
1392 * that the server selected once the ServerHello has been processed.
1394 unsigned char *alpn_selected
;
1395 size_t alpn_selected_len
;
1396 /* used by the server to know what options were proposed */
1397 unsigned char *alpn_proposed
;
1398 size_t alpn_proposed_len
;
1399 /* used by the client to know if it actually sent alpn */
1402 # ifndef OPENSSL_NO_EC
1404 * This is set to true if we believe that this is a version of Safari
1405 * running on OS X 10.6 or newer. We wish to know this because Safari on
1406 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1408 char is_probably_safari
;
1409 # endif /* !OPENSSL_NO_EC */
1411 /* For clients: peer temporary key */
1412 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1413 /* The group_id for the DH/ECDH key */
1420 struct dtls1_state_st
*d1
; /* DTLSv1 variables */
1421 /* callback that allows applications to peek at protocol messages */
1422 void (*msg_callback
) (int write_p
, int version
, int content_type
,
1423 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
1424 void *msg_callback_arg
;
1425 int hit
; /* reusing a previous session */
1426 X509_VERIFY_PARAM
*param
;
1427 /* Per connection DANE state */
1430 STACK_OF(SSL_CIPHER
) *peer_ciphers
;
1431 STACK_OF(SSL_CIPHER
) *cipher_list
;
1432 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
1433 /* TLSv1.3 specific ciphersuites */
1434 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
;
1436 * These are the ones being used, the ones in SSL_SESSION are the ones to
1437 * be 'copied' into these ones
1441 * The TLS1.3 secrets.
1443 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
1444 unsigned char handshake_secret
[EVP_MAX_MD_SIZE
];
1445 unsigned char master_secret
[EVP_MAX_MD_SIZE
];
1446 unsigned char resumption_master_secret
[EVP_MAX_MD_SIZE
];
1447 unsigned char client_finished_secret
[EVP_MAX_MD_SIZE
];
1448 unsigned char server_finished_secret
[EVP_MAX_MD_SIZE
];
1449 unsigned char server_finished_hash
[EVP_MAX_MD_SIZE
];
1450 unsigned char handshake_traffic_hash
[EVP_MAX_MD_SIZE
];
1451 unsigned char client_app_traffic_secret
[EVP_MAX_MD_SIZE
];
1452 unsigned char server_app_traffic_secret
[EVP_MAX_MD_SIZE
];
1453 unsigned char exporter_master_secret
[EVP_MAX_MD_SIZE
];
1454 unsigned char early_exporter_master_secret
[EVP_MAX_MD_SIZE
];
1455 EVP_CIPHER_CTX
*enc_read_ctx
; /* cryptographic state */
1456 unsigned char read_iv
[EVP_MAX_IV_LENGTH
]; /* TLSv1.3 static read IV */
1457 EVP_MD_CTX
*read_hash
; /* used for mac generation */
1458 COMP_CTX
*compress
; /* compression */
1459 COMP_CTX
*expand
; /* uncompress */
1460 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1461 unsigned char write_iv
[EVP_MAX_IV_LENGTH
]; /* TLSv1.3 static write IV */
1462 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1465 /* This is used to hold the server certificate used */
1466 struct cert_st
/* CERT */ *cert
;
1469 * The hash of all messages prior to the CertificateVerify, and the length
1472 unsigned char cert_verify_hash
[EVP_MAX_MD_SIZE
];
1473 size_t cert_verify_hash_len
;
1475 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1476 enum {SSL_HRR_NONE
= 0, SSL_HRR_PENDING
, SSL_HRR_COMPLETE
}
1477 hello_retry_request
;
1480 * the session_id_context is used to ensure sessions are only reused in
1481 * the appropriate context
1483 size_t sid_ctx_length
;
1484 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
1485 /* This can also be in the session once a session is established */
1486 SSL_SESSION
*session
;
1487 /* TLSv1.3 PSK session */
1488 SSL_SESSION
*psksession
;
1489 unsigned char *psksession_id
;
1490 size_t psksession_id_len
;
1491 /* Default generate session ID callback. */
1492 GEN_SESSION_CB generate_session_id
;
1494 * The temporary TLSv1.3 session id. This isn't really a session id at all
1495 * but is a random value sent in the legacy session id field.
1497 unsigned char tmp_session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
1498 size_t tmp_session_id_len
;
1501 * 0 don't care about verify failure.
1502 * 1 fail if verify fails
1504 uint32_t verify_mode
;
1505 /* fail if callback returns 0 */
1506 int (*verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
1507 /* optional informational callback */
1508 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
1509 /* error bytes to be written */
1513 # ifndef OPENSSL_NO_PSK
1514 SSL_psk_client_cb_func psk_client_callback
;
1515 SSL_psk_server_cb_func psk_server_callback
;
1517 SSL_psk_find_session_cb_func psk_find_session_cb
;
1518 SSL_psk_use_session_cb_func psk_use_session_cb
;
1521 /* Verified chain of peer */
1522 STACK_OF(X509
) *verified_chain
;
1524 /* extra application data */
1525 CRYPTO_EX_DATA ex_data
;
1527 * What we put in certificate_authorities extension for TLS 1.3
1528 * (ClientHello and CertificateRequest) or just client cert requests for
1529 * earlier versions. If client_ca_names is populated then it is only used
1530 * for client cert requests, and in preference to ca_names.
1532 STACK_OF(X509_NAME
) *ca_names
;
1533 STACK_OF(X509_NAME
) *client_ca_names
;
1534 CRYPTO_REF_COUNT references
;
1535 /* protocol behaviour */
1539 int min_proto_version
;
1540 int max_proto_version
;
1541 size_t max_cert_list
;
1544 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1545 * secret and SSLv3/TLS (<=1.2) rollback check
1549 * If we're using more than one pipeline how should we divide the data
1550 * up between the pipes?
1552 size_t split_send_fragment
;
1554 * Maximum amount of data to send in one fragment. actual record size can
1555 * be more than this due to padding and MAC overheads.
1557 size_t max_send_fragment
;
1558 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1559 size_t max_pipelines
;
1562 /* Built-in extension flags */
1563 uint8_t extflags
[TLSEXT_IDX_num_builtins
];
1564 /* TLS extension debug callback */
1565 void (*debug_cb
)(SSL
*s
, int client_server
, int type
,
1566 const unsigned char *data
, int len
, void *arg
);
1569 /* certificate status request info */
1570 /* Status type or -1 if no status type */
1572 /* Raw extension data, if seen */
1573 unsigned char *scts
;
1574 /* Length of raw extension data, if seen */
1576 /* Expect OCSP CertificateStatus message */
1577 int status_expected
;
1580 /* OCSP status request only */
1581 STACK_OF(OCSP_RESPID
) *ids
;
1582 X509_EXTENSIONS
*exts
;
1583 /* OCSP response received or to be sent */
1584 unsigned char *resp
;
1588 /* RFC4507 session ticket expected to be received or sent */
1589 int ticket_expected
;
1590 /* TLS 1.3 tickets requested by the application. */
1591 int extra_tickets_expected
;
1592 # ifndef OPENSSL_NO_EC
1593 size_t ecpointformats_len
;
1595 unsigned char *ecpointformats
;
1597 size_t peer_ecpointformats_len
;
1599 unsigned char *peer_ecpointformats
;
1600 # endif /* OPENSSL_NO_EC */
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
1670 * Parsed form of the ClientHello, kept around across client_hello_cb
1673 CLIENTHELLO_MSG
*clienthello
;
1676 * no further mod of servername
1677 * 0 : call the servername extension callback.
1678 * 1 : prepare 2, allow last ack just after in server callback.
1679 * 2 : don't call servername callback, no ack in server hello
1681 int servername_done
;
1682 # ifndef OPENSSL_NO_CT
1684 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1685 * If they are not, the connection should be aborted.
1687 ssl_ct_validation_cb ct_validation_callback
;
1688 /* User-supplied argument that is passed to the ct_validation_callback */
1689 void *ct_validation_callback_arg
;
1691 * Consolidated stack of SCTs from all sources.
1692 * Lazily populated by CT_get_peer_scts(SSL*)
1694 STACK_OF(SCT
) *scts
;
1695 /* Have we attempted to find/parse SCTs yet? */
1698 SSL_CTX
*session_ctx
; /* initial ctx, used to store sessions */
1699 # ifndef OPENSSL_NO_SRTP
1701 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1702 /* What's been chosen */
1703 SRTP_PROTECTION_PROFILE
*srtp_profile
;
1706 * 1 if we are renegotiating.
1707 * 2 if we are a server and are inside a handshake
1708 * (i.e. not just sending a HelloRequest)
1711 /* If sending a KeyUpdate is pending */
1713 /* Post-handshake authentication state */
1714 SSL_PHA_STATE post_handshake_auth
;
1716 uint8_t* pha_context
;
1717 size_t pha_context_len
;
1719 EVP_MD_CTX
*pha_dgst
; /* this is just the digest through ClientFinished */
1721 # ifndef OPENSSL_NO_SRP
1722 /* ctx for SRP authentication */
1726 * Callback for disabling session caching and ticket support on a session
1727 * basis, depending on the chosen cipher.
1729 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1730 RECORD_LAYER rlayer
;
1731 /* Default password callback. */
1732 pem_password_cb
*default_passwd_callback
;
1733 /* Default password callback user data. */
1734 void *default_passwd_callback_userdata
;
1735 /* Async Job info */
1737 ASYNC_WAIT_CTX
*waitctx
;
1741 * The maximum number of bytes advertised in session tickets that can be
1742 * sent as early data.
1744 uint32_t max_early_data
;
1746 * The maximum number of bytes of early data that a server will tolerate
1747 * (which should be at least as much as max_early_data).
1749 uint32_t recv_max_early_data
;
1752 * The number of bytes of early data received so far. If we accepted early
1753 * data then this is a count of the plaintext bytes. If we rejected it then
1754 * this is a count of the ciphertext bytes.
1756 uint32_t early_data_count
;
1758 /* TLS1.3 padding callback */
1759 size_t (*record_padding_cb
)(SSL
*s
, int type
, size_t len
, void *arg
);
1760 void *record_padding_arg
;
1761 size_t block_padding
;
1763 CRYPTO_RWLOCK
*lock
;
1765 /* The number of TLS1.3 tickets to automatically send */
1767 /* The number of TLS1.3 tickets actually sent so far */
1768 size_t sent_tickets
;
1769 /* The next nonce value to use when we send a ticket on this connection */
1770 uint64_t next_ticket_nonce
;
1772 /* Callback to determine if early_data is acceptable or not */
1773 SSL_allow_early_data_cb_fn allow_early_data_cb
;
1774 void *allow_early_data_cb_data
;
1776 /* Callback for SSL async handling */
1777 SSL_async_callback_fn async_cb
;
1781 * Signature algorithms shared by client and server: cached because these
1782 * are used most often.
1784 const struct sigalg_lookup_st
**shared_sigalgs
;
1785 size_t shared_sigalgslen
;
1789 * Structure containing table entry of values associated with the signature
1790 * algorithms (signature scheme) extension
1792 typedef struct sigalg_lookup_st
{
1793 /* TLS 1.3 signature scheme name */
1795 /* Raw value used in extension */
1797 /* NID of hash algorithm or NID_undef if no hash */
1799 /* Index of hash algorithm or -1 if no hash algorithm */
1801 /* NID of signature algorithm */
1803 /* Index of signature algorithm */
1805 /* Combined hash and signature NID, if any */
1807 /* Required public key curve (ECDSA only) */
1809 /* Whether this signature algorithm is actually available for use */
1814 * Structure containing table entry of certificate info corresponding to
1818 int nid
; /* NID of public key algorithm */
1819 uint32_t amask
; /* authmask corresponding to key type */
1822 /* DTLS structures */
1824 # ifndef OPENSSL_NO_SCTP
1825 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1828 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1829 # define DTLS1_MAX_MTU_OVERHEAD 48
1832 * Flag used in message reuse to indicate the buffer contains the record
1833 * header as well as the handshake message header.
1835 # define DTLS1_SKIP_RECORD_HEADER 2
1837 struct dtls1_retransmit_state
{
1838 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1839 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1840 COMP_CTX
*compress
; /* compression */
1841 SSL_SESSION
*session
;
1842 unsigned short epoch
;
1845 struct hm_header_st
{
1851 unsigned int is_ccs
;
1852 struct dtls1_retransmit_state saved_retransmit_state
;
1855 struct dtls1_timeout_st
{
1856 /* Number of read timeouts so far */
1857 unsigned int read_timeouts
;
1858 /* Number of write timeouts so far */
1859 unsigned int write_timeouts
;
1860 /* Number of alerts received so far */
1861 unsigned int num_alerts
;
1864 typedef struct hm_fragment_st
{
1865 struct hm_header_st msg_header
;
1866 unsigned char *fragment
;
1867 unsigned char *reassembly
;
1870 typedef struct pqueue_st pqueue
;
1871 typedef struct pitem_st pitem
;
1874 unsigned char priority
[8]; /* 64-bit value in big-endian encoding */
1879 typedef struct pitem_st
*piterator
;
1881 pitem
*pitem_new(unsigned char *prio64be
, void *data
);
1882 void pitem_free(pitem
*item
);
1883 pqueue
*pqueue_new(void);
1884 void pqueue_free(pqueue
*pq
);
1885 pitem
*pqueue_insert(pqueue
*pq
, pitem
*item
);
1886 pitem
*pqueue_peek(pqueue
*pq
);
1887 pitem
*pqueue_pop(pqueue
*pq
);
1888 pitem
*pqueue_find(pqueue
*pq
, unsigned char *prio64be
);
1889 pitem
*pqueue_iterator(pqueue
*pq
);
1890 pitem
*pqueue_next(piterator
*iter
);
1891 size_t pqueue_size(pqueue
*pq
);
1893 typedef struct dtls1_state_st
{
1894 unsigned char cookie
[DTLS1_COOKIE_LENGTH
];
1896 unsigned int cookie_verified
;
1897 /* handshake message numbers */
1898 unsigned short handshake_write_seq
;
1899 unsigned short next_handshake_write_seq
;
1900 unsigned short handshake_read_seq
;
1901 /* Buffered handshake messages */
1902 pqueue
*buffered_messages
;
1903 /* Buffered (sent) handshake records */
1904 pqueue
*sent_messages
;
1905 size_t link_mtu
; /* max on-the-wire DTLS packet size */
1906 size_t mtu
; /* max DTLS packet size */
1907 struct hm_header_st w_msg_hdr
;
1908 struct hm_header_st r_msg_hdr
;
1909 struct dtls1_timeout_st timeout
;
1911 * Indicates when the last handshake msg sent will timeout
1913 struct timeval next_timeout
;
1914 /* Timeout duration */
1915 unsigned int timeout_duration_us
;
1917 unsigned int retransmitting
;
1918 # ifndef OPENSSL_NO_SCTP
1919 int shutdown_received
;
1922 DTLS_timer_cb timer_cb
;
1926 # ifndef OPENSSL_NO_EC
1928 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1930 # define EXPLICIT_PRIME_CURVE_TYPE 1
1931 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1932 # define NAMED_CURVE_TYPE 3
1933 # endif /* OPENSSL_NO_EC */
1935 struct cert_pkey_st
{
1937 EVP_PKEY
*privatekey
;
1938 /* Chain for this certificate */
1939 STACK_OF(X509
) *chain
;
1941 * serverinfo data for this certificate. The data is in TLS Extension
1942 * wire format, specifically it's a series of records like:
1943 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1945 * uint8_t data[length];
1947 unsigned char *serverinfo
;
1948 size_t serverinfo_length
;
1950 /* Retrieve Suite B flags */
1951 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1952 /* Uses to check strict mode: suite B modes are always strict */
1953 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1954 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1957 ENDPOINT_CLIENT
= 0,
1964 unsigned short ext_type
;
1966 /* The context which this extension applies to */
1967 unsigned int context
;
1969 * Per-connection flags relating to this extension type: not used if
1970 * part of an SSL_CTX structure.
1973 SSL_custom_ext_add_cb_ex add_cb
;
1974 SSL_custom_ext_free_cb_ex free_cb
;
1976 SSL_custom_ext_parse_cb_ex parse_cb
;
1978 } custom_ext_method
;
1980 /* ext_flags values */
1983 * Indicates an extension has been received. Used to check for unsolicited or
1984 * duplicate extensions.
1986 # define SSL_EXT_FLAG_RECEIVED 0x1
1988 * Indicates an extension has been sent: used to enable sending of
1989 * corresponding ServerHello extension.
1991 # define SSL_EXT_FLAG_SENT 0x2
1994 custom_ext_method
*meths
;
1996 } custom_ext_methods
;
1998 typedef struct cert_st
{
1999 /* Current active set */
2001 * ALWAYS points to an element of the pkeys array
2002 * Probably it would make more sense to store
2003 * an index, not a pointer.
2006 # ifndef OPENSSL_NO_DH
2008 DH
*(*dh_tmp_cb
) (SSL
*ssl
, int is_export
, int keysize
);
2011 /* Flags related to certificates */
2012 uint32_t cert_flags
;
2013 CERT_PKEY pkeys
[SSL_PKEY_NUM
];
2014 /* Custom certificate types sent in certificate request message. */
2018 * supported signature algorithms. When set on a client this is sent in
2019 * the client hello as the supported signature algorithms extension. For
2020 * servers it represents the signature algorithms we are willing to use.
2022 uint16_t *conf_sigalgs
;
2023 /* Size of above array */
2024 size_t conf_sigalgslen
;
2026 * Client authentication signature algorithms, if not set then uses
2027 * conf_sigalgs. On servers these will be the signature algorithms sent
2028 * to the client in a certificate request for TLS 1.2. On a client this
2029 * represents the signature algorithms we are willing to use for client
2032 uint16_t *client_sigalgs
;
2033 /* Size of above array */
2034 size_t client_sigalgslen
;
2036 * Certificate setup callback: if set is called whenever a certificate
2037 * may be required (client or server). the callback can then examine any
2038 * appropriate parameters and setup any certificates required. This
2039 * allows advanced applications to select certificates on the fly: for
2040 * example based on supported signature algorithms or curves.
2042 int (*cert_cb
) (SSL
*ssl
, void *arg
);
2045 * Optional X509_STORE for chain building or certificate validation If
2046 * NULL the parent SSL_CTX store is used instead.
2048 X509_STORE
*chain_store
;
2049 X509_STORE
*verify_store
;
2050 /* Custom extensions */
2051 custom_ext_methods custext
;
2052 /* Security callback */
2053 int (*sec_cb
) (const SSL
*s
, const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
2054 void *other
, void *ex
);
2055 /* Security level */
2058 # ifndef OPENSSL_NO_PSK
2059 /* If not NULL psk identity hint to use for servers */
2060 char *psk_identity_hint
;
2062 CRYPTO_REF_COUNT references
; /* >1 only if SSL_copy_session_id is used */
2063 CRYPTO_RWLOCK
*lock
;
2066 # define FP_ICC (int (*)(const void *,const void *))
2069 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
2070 * of a mess of functions, but hell, think of it as an opaque structure :-)
2072 typedef struct ssl3_enc_method
{
2073 int (*enc
) (SSL
*, SSL3_RECORD
*, size_t, int, SSL_MAC_BUF
*, size_t);
2074 int (*mac
) (SSL
*, SSL3_RECORD
*, unsigned char *, int);
2075 int (*setup_key_block
) (SSL
*);
2076 int (*generate_master_secret
) (SSL
*, unsigned char *, unsigned char *,
2078 int (*change_cipher_state
) (SSL
*, int);
2079 size_t (*final_finish_mac
) (SSL
*, const char *, size_t, unsigned char *);
2080 const char *client_finished_label
;
2081 size_t client_finished_label_len
;
2082 const char *server_finished_label
;
2083 size_t server_finished_label_len
;
2084 int (*alert_value
) (int);
2085 int (*export_keying_material
) (SSL
*, unsigned char *, size_t,
2086 const char *, size_t,
2087 const unsigned char *, size_t,
2089 /* Various flags indicating protocol version requirements */
2091 /* Set the handshake header */
2092 int (*set_handshake_header
) (SSL
*s
, WPACKET
*pkt
, int type
);
2093 /* Close construction of the handshake message */
2094 int (*close_construct_packet
) (SSL
*s
, WPACKET
*pkt
, int htype
);
2095 /* Write out handshake message */
2096 int (*do_write
) (SSL
*s
);
2099 # define ssl_set_handshake_header(s, pkt, htype) \
2100 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
2101 # define ssl_close_construct_packet(s, pkt, htype) \
2102 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
2103 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
2105 /* Values for enc_flags */
2107 /* Uses explicit IV for CBC mode */
2108 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
2109 /* Uses signature algorithms extension */
2110 # define SSL_ENC_FLAG_SIGALGS 0x2
2111 /* Uses SHA256 default PRF */
2112 # define SSL_ENC_FLAG_SHA256_PRF 0x4
2114 # define SSL_ENC_FLAG_DTLS 0x8
2116 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
2117 * apply to others in future.
2119 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2121 # ifndef OPENSSL_NO_COMP
2122 /* Used for holding the relevant compression methods loaded into SSL_CTX */
2123 typedef struct ssl3_comp_st
{
2124 int comp_id
; /* The identifier byte for this compression
2126 char *name
; /* Text name used for the compression type */
2127 COMP_METHOD
*method
; /* The method :-) */
2131 typedef enum downgrade_en
{
2138 * Dummy status type for the status_type extension. Indicates no status type
2141 #define TLSEXT_STATUSTYPE_nothing -1
2143 /* Sigalgs values */
2144 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2145 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2146 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2147 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2148 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2149 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2150 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2151 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2152 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2153 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2154 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2155 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2156 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2157 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2158 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2159 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2160 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2161 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2162 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2163 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2164 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2165 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840
2166 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841
2167 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2168 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2169 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2171 #define TLSEXT_SIGALG_ed25519 0x0807
2172 #define TLSEXT_SIGALG_ed448 0x0808
2174 /* Known PSK key exchange modes */
2175 #define TLSEXT_KEX_MODE_KE 0x00
2176 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2179 * Internal representations of key exchange modes
2181 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2182 #define TLSEXT_KEX_MODE_FLAG_KE 1
2183 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2185 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
2186 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2188 /* A dummy signature value not valid for TLSv1.2 signature algs */
2189 #define TLSEXT_signature_rsa_pss 0x0101
2191 /* TLSv1.3 downgrade protection sentinel values */
2192 extern const unsigned char tls11downgrade
[8];
2193 extern const unsigned char tls12downgrade
[8];
2195 extern SSL3_ENC_METHOD ssl3_undef_enc_method
;
2197 __owur
const SSL_METHOD
*ssl_bad_method(int ver
);
2198 __owur
const SSL_METHOD
*sslv3_method(void);
2199 __owur
const SSL_METHOD
*sslv3_server_method(void);
2200 __owur
const SSL_METHOD
*sslv3_client_method(void);
2201 __owur
const SSL_METHOD
*tlsv1_method(void);
2202 __owur
const SSL_METHOD
*tlsv1_server_method(void);
2203 __owur
const SSL_METHOD
*tlsv1_client_method(void);
2204 __owur
const SSL_METHOD
*tlsv1_1_method(void);
2205 __owur
const SSL_METHOD
*tlsv1_1_server_method(void);
2206 __owur
const SSL_METHOD
*tlsv1_1_client_method(void);
2207 __owur
const SSL_METHOD
*tlsv1_2_method(void);
2208 __owur
const SSL_METHOD
*tlsv1_2_server_method(void);
2209 __owur
const SSL_METHOD
*tlsv1_2_client_method(void);
2210 __owur
const SSL_METHOD
*tlsv1_3_method(void);
2211 __owur
const SSL_METHOD
*tlsv1_3_server_method(void);
2212 __owur
const SSL_METHOD
*tlsv1_3_client_method(void);
2213 __owur
const SSL_METHOD
*dtlsv1_method(void);
2214 __owur
const SSL_METHOD
*dtlsv1_server_method(void);
2215 __owur
const SSL_METHOD
*dtlsv1_client_method(void);
2216 __owur
const SSL_METHOD
*dtls_bad_ver_client_method(void);
2217 __owur
const SSL_METHOD
*dtlsv1_2_method(void);
2218 __owur
const SSL_METHOD
*dtlsv1_2_server_method(void);
2219 __owur
const SSL_METHOD
*dtlsv1_2_client_method(void);
2221 extern const SSL3_ENC_METHOD TLSv1_enc_data
;
2222 extern const SSL3_ENC_METHOD TLSv1_1_enc_data
;
2223 extern const SSL3_ENC_METHOD TLSv1_2_enc_data
;
2224 extern const SSL3_ENC_METHOD TLSv1_3_enc_data
;
2225 extern const SSL3_ENC_METHOD SSLv3_enc_data
;
2226 extern const SSL3_ENC_METHOD DTLSv1_enc_data
;
2227 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data
;
2230 * Flags for SSL methods
2232 # define SSL_METHOD_NO_FIPS (1U<<0)
2233 # define SSL_METHOD_NO_SUITEB (1U<<1)
2235 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2236 s_connect, enc_data) \
2237 const SSL_METHOD *func_name(void) \
2239 static const SSL_METHOD func_name##_data= { \
2253 ssl3_renegotiate_check, \
2256 ssl3_dispatch_alert, \
2259 ssl3_get_cipher_by_char, \
2260 ssl3_put_cipher_by_char, \
2264 tls1_default_timeout, \
2266 ssl_undefined_void_function, \
2267 ssl3_callback_ctrl, \
2268 ssl3_ctx_callback_ctrl, \
2270 return &func_name##_data; \
2273 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2274 const SSL_METHOD *func_name(void) \
2276 static const SSL_METHOD func_name##_data= { \
2278 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2290 ssl3_renegotiate_check, \
2293 ssl3_dispatch_alert, \
2296 ssl3_get_cipher_by_char, \
2297 ssl3_put_cipher_by_char, \
2301 ssl3_default_timeout, \
2303 ssl_undefined_void_function, \
2304 ssl3_callback_ctrl, \
2305 ssl3_ctx_callback_ctrl, \
2307 return &func_name##_data; \
2310 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2311 s_connect, enc_data) \
2312 const SSL_METHOD *func_name(void) \
2314 static const SSL_METHOD func_name##_data= { \
2328 ssl3_renegotiate_check, \
2330 dtls1_write_app_data_bytes, \
2331 dtls1_dispatch_alert, \
2334 ssl3_get_cipher_by_char, \
2335 ssl3_put_cipher_by_char, \
2339 dtls1_default_timeout, \
2341 ssl_undefined_void_function, \
2342 ssl3_callback_ctrl, \
2343 ssl3_ctx_callback_ctrl, \
2345 return &func_name##_data; \
2348 struct openssl_ssl_test_functions
{
2349 int (*p_ssl_init_wbio_buffer
) (SSL
*s
);
2350 int (*p_ssl3_setup_buffers
) (SSL
*s
);
2353 const char *ssl_protocol_to_string(int version
);
2355 /* Returns true if certificate and private key for 'idx' are present */
2356 static ossl_inline
int ssl_has_cert(const SSL
*s
, int idx
)
2358 if (idx
< 0 || idx
>= SSL_PKEY_NUM
)
2360 return s
->cert
->pkeys
[idx
].x509
!= NULL
2361 && s
->cert
->pkeys
[idx
].privatekey
!= NULL
;
2364 static ossl_inline
void tls1_get_peer_groups(SSL
*s
, const uint16_t **pgroups
,
2367 *pgroups
= s
->ext
.peer_supportedgroups
;
2368 *pgroupslen
= s
->ext
.peer_supportedgroups_len
;
2371 # ifndef OPENSSL_UNIT_TEST
2373 __owur
int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
);
2374 __owur
int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
);
2375 void ssl_clear_cipher_ctx(SSL
*s
);
2376 int ssl_clear_bad_session(SSL
*s
);
2377 __owur CERT
*ssl_cert_new(void);
2378 __owur CERT
*ssl_cert_dup(CERT
*cert
);
2379 void ssl_cert_clear_certs(CERT
*c
);
2380 void ssl_cert_free(CERT
*c
);
2381 __owur
int ssl_generate_session_id(SSL
*s
, SSL_SESSION
*ss
);
2382 __owur
int ssl_get_new_session(SSL
*s
, int session
);
2383 __owur SSL_SESSION
*lookup_sess_in_cache(SSL
*s
, const unsigned char *sess_id
,
2384 size_t sess_id_len
);
2385 __owur
int ssl_get_prev_session(SSL
*s
, CLIENTHELLO_MSG
*hello
);
2386 __owur SSL_SESSION
*ssl_session_dup(const SSL_SESSION
*src
, int ticket
);
2387 __owur
int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
);
2388 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
2389 __owur
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2390 const SSL_CIPHER
*const *bp
);
2391 __owur
STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
2392 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
2393 STACK_OF(SSL_CIPHER
) **cipher_list
,
2394 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
2395 const char *rule_str
,
2397 __owur
int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
);
2398 __owur
int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
2399 STACK_OF(SSL_CIPHER
) **skp
,
2400 STACK_OF(SSL_CIPHER
) **scsvs
, int sslv2format
,
2402 void ssl_update_cache(SSL
*s
, int mode
);
2403 __owur
int ssl_cipher_get_evp_cipher(SSL_CTX
*ctx
, const SSL_CIPHER
*sslc
,
2404 const EVP_CIPHER
**enc
);
2405 __owur
int ssl_cipher_get_evp(SSL_CTX
*ctxc
, const SSL_SESSION
*s
,
2406 const EVP_CIPHER
**enc
, const EVP_MD
**md
,
2407 int *mac_pkey_type
, size_t *mac_secret_size
,
2408 SSL_COMP
**comp
, int use_etm
);
2409 __owur
int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2410 size_t *int_overhead
, size_t *blocksize
,
2411 size_t *ext_overhead
);
2412 __owur
int ssl_cert_is_disabled(size_t idx
);
2413 __owur
const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
,
2414 const unsigned char *ptr
,
2416 __owur
int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
2417 __owur
int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
2418 __owur
int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
2419 __owur
int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
2420 __owur
int ssl_cert_select_current(CERT
*c
, X509
*x
);
2421 __owur
int ssl_cert_set_current(CERT
*c
, long arg
);
2422 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
);
2424 __owur
int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
);
2425 __owur
int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
);
2426 __owur
int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
,
2429 __owur
int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
);
2430 __owur
int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
2433 __owur
int ssl_cert_lookup_by_nid(int nid
, size_t *pidx
);
2434 __owur
const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_pkey(const EVP_PKEY
*pk
,
2436 __owur
const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_idx(size_t idx
);
2438 int ssl_undefined_function(SSL
*s
);
2439 __owur
int ssl_undefined_void_function(void);
2440 __owur
int ssl_undefined_const_function(const SSL
*s
);
2441 __owur
int ssl_get_server_cert_serverinfo(SSL
*s
,
2442 const unsigned char **serverinfo
,
2443 size_t *serverinfo_length
);
2444 void ssl_set_masks(SSL
*s
);
2445 __owur
STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
);
2446 __owur
int ssl_x509err2alert(int type
);
2447 void ssl_sort_cipher_list(void);
2448 int ssl_load_ciphers(SSL_CTX
*ctx
);
2449 __owur
int ssl_setup_sig_algs(SSL_CTX
*ctx
);
2450 int ssl_load_groups(SSL_CTX
*ctx
);
2451 __owur
int ssl_fill_hello_random(SSL
*s
, int server
, unsigned char *field
,
2452 size_t len
, DOWNGRADE dgrd
);
2453 __owur
int ssl_generate_master_secret(SSL
*s
, unsigned char *pms
, size_t pmslen
,
2455 __owur EVP_PKEY
*ssl_generate_pkey(SSL
*s
, EVP_PKEY
*pm
);
2456 __owur
int ssl_derive(SSL
*s
, EVP_PKEY
*privkey
, EVP_PKEY
*pubkey
,
2458 __owur EVP_PKEY
*ssl_dh_to_pkey(DH
*dh
);
2459 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
);
2460 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
);
2462 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_id(uint32_t id
);
2463 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_std_name(const char *stdname
);
2464 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_char(const unsigned char *p
);
2465 __owur
int ssl3_put_cipher_by_char(const SSL_CIPHER
*c
, WPACKET
*pkt
,
2467 int ssl3_init_finished_mac(SSL
*s
);
2468 __owur
int ssl3_setup_key_block(SSL
*s
);
2469 __owur
int ssl3_change_cipher_state(SSL
*s
, int which
);
2470 void ssl3_cleanup_key_block(SSL
*s
);
2471 __owur
int ssl3_do_write(SSL
*s
, int type
);
2472 int ssl3_send_alert(SSL
*s
, int level
, int desc
);
2473 __owur
int ssl3_generate_master_secret(SSL
*s
, unsigned char *out
,
2474 unsigned char *p
, size_t len
,
2475 size_t *secret_size
);
2476 __owur
int ssl3_get_req_cert_type(SSL
*s
, WPACKET
*pkt
);
2477 __owur
int ssl3_num_ciphers(void);
2478 __owur
const SSL_CIPHER
*ssl3_get_cipher(unsigned int u
);
2479 int ssl3_renegotiate(SSL
*ssl
);
2480 int ssl3_renegotiate_check(SSL
*ssl
, int initok
);
2481 void ssl3_digest_master_key_set_params(const SSL_SESSION
*session
,
2482 OSSL_PARAM params
[]);
2483 __owur
int ssl3_dispatch_alert(SSL
*s
);
2484 __owur
size_t ssl3_final_finish_mac(SSL
*s
, const char *sender
, size_t slen
,
2486 __owur
int ssl3_finish_mac(SSL
*s
, const unsigned char *buf
, size_t len
);
2487 void ssl3_free_digest_list(SSL
*s
);
2488 __owur
unsigned long ssl3_output_cert_chain(SSL
*s
, WPACKET
*pkt
,
2490 __owur
const SSL_CIPHER
*ssl3_choose_cipher(SSL
*ssl
,
2491 STACK_OF(SSL_CIPHER
) *clnt
,
2492 STACK_OF(SSL_CIPHER
) *srvr
);
2493 __owur
int ssl3_digest_cached_records(SSL
*s
, int keep
);
2494 __owur
int ssl3_new(SSL
*s
);
2495 void ssl3_free(SSL
*s
);
2496 __owur
int ssl3_read(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
2497 __owur
int ssl3_peek(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
2498 __owur
int ssl3_write(SSL
*s
, const void *buf
, size_t len
, size_t *written
);
2499 __owur
int ssl3_shutdown(SSL
*s
);
2500 int ssl3_clear(SSL
*s
);
2501 __owur
long ssl3_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
2502 __owur
long ssl3_ctx_ctrl(SSL_CTX
*s
, int cmd
, long larg
, void *parg
);
2503 __owur
long ssl3_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void));
2504 __owur
long ssl3_ctx_callback_ctrl(SSL_CTX
*s
, int cmd
, void (*fp
) (void));
2506 __owur
int ssl3_do_change_cipher_spec(SSL
*ssl
);
2507 __owur
long ssl3_default_timeout(void);
2509 __owur
int ssl3_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
2510 __owur
int tls_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
2511 __owur
int tls_setup_handshake(SSL
*s
);
2512 __owur
int dtls1_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
2513 __owur
int dtls1_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
2514 __owur
int ssl3_handshake_write(SSL
*s
);
2516 __owur
int ssl_allow_compression(SSL
*s
);
2518 __owur
int ssl_version_supported(const SSL
*s
, int version
,
2519 const SSL_METHOD
**meth
);
2521 __owur
int ssl_set_client_hello_version(SSL
*s
);
2522 __owur
int ssl_check_version_downgrade(SSL
*s
);
2523 __owur
int ssl_set_version_bound(int method_version
, int version
, int *bound
);
2524 __owur
int ssl_choose_server_version(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2526 __owur
int ssl_choose_client_version(SSL
*s
, int version
,
2527 RAW_EXTENSION
*extensions
);
2528 __owur
int ssl_get_min_max_version(const SSL
*s
, int *min_version
,
2529 int *max_version
, int *real_max
);
2531 __owur
long tls1_default_timeout(void);
2532 __owur
int dtls1_do_write(SSL
*s
, int type
);
2533 void dtls1_set_message_header(SSL
*s
,
2536 size_t frag_off
, size_t frag_len
);
2538 int dtls1_write_app_data_bytes(SSL
*s
, int type
, const void *buf_
, size_t len
,
2541 __owur
int dtls1_read_failed(SSL
*s
, int code
);
2542 __owur
int dtls1_buffer_message(SSL
*s
, int ccs
);
2543 __owur
int dtls1_retransmit_message(SSL
*s
, unsigned short seq
, int *found
);
2544 __owur
int dtls1_get_queue_priority(unsigned short seq
, int is_ccs
);
2545 int dtls1_retransmit_buffered_messages(SSL
*s
);
2546 void dtls1_clear_received_buffer(SSL
*s
);
2547 void dtls1_clear_sent_buffer(SSL
*s
);
2548 void dtls1_get_message_header(unsigned char *data
,
2549 struct hm_header_st
*msg_hdr
);
2550 __owur
long dtls1_default_timeout(void);
2551 __owur
struct timeval
*dtls1_get_timeout(SSL
*s
, struct timeval
*timeleft
);
2552 __owur
int dtls1_check_timeout_num(SSL
*s
);
2553 __owur
int dtls1_handle_timeout(SSL
*s
);
2554 void dtls1_start_timer(SSL
*s
);
2555 void dtls1_stop_timer(SSL
*s
);
2556 __owur
int dtls1_is_timer_expired(SSL
*s
);
2557 void dtls1_double_timeout(SSL
*s
);
2558 __owur
int dtls_raw_hello_verify_request(WPACKET
*pkt
, unsigned char *cookie
,
2560 __owur
size_t dtls1_min_mtu(SSL
*s
);
2561 void dtls1_hm_fragment_free(hm_fragment
*frag
);
2562 __owur
int dtls1_query_mtu(SSL
*s
);
2564 __owur
int tls1_new(SSL
*s
);
2565 void tls1_free(SSL
*s
);
2566 int tls1_clear(SSL
*s
);
2568 __owur
int dtls1_new(SSL
*s
);
2569 void dtls1_free(SSL
*s
);
2570 int dtls1_clear(SSL
*s
);
2571 long dtls1_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
2572 __owur
int dtls1_shutdown(SSL
*s
);
2574 __owur
int dtls1_dispatch_alert(SSL
*s
);
2576 __owur
int ssl_init_wbio_buffer(SSL
*s
);
2577 int ssl_free_wbio_buffer(SSL
*s
);
2579 __owur
int tls1_change_cipher_state(SSL
*s
, int which
);
2580 __owur
int tls1_setup_key_block(SSL
*s
);
2581 __owur
size_t tls1_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2583 __owur
int tls1_generate_master_secret(SSL
*s
, unsigned char *out
,
2584 unsigned char *p
, size_t len
,
2585 size_t *secret_size
);
2586 __owur
int tls13_setup_key_block(SSL
*s
);
2587 __owur
size_t tls13_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2589 __owur
int tls13_change_cipher_state(SSL
*s
, int which
);
2590 __owur
int tls13_update_key(SSL
*s
, int send
);
2591 __owur
int tls13_hkdf_expand(SSL
*s
, const EVP_MD
*md
,
2592 const unsigned char *secret
,
2593 const unsigned char *label
, size_t labellen
,
2594 const unsigned char *data
, size_t datalen
,
2595 unsigned char *out
, size_t outlen
, int fatal
);
2596 __owur
int tls13_derive_key(SSL
*s
, const EVP_MD
*md
,
2597 const unsigned char *secret
, unsigned char *key
,
2599 __owur
int tls13_derive_iv(SSL
*s
, const EVP_MD
*md
,
2600 const unsigned char *secret
, unsigned char *iv
,
2602 __owur
int tls13_derive_finishedkey(SSL
*s
, const EVP_MD
*md
,
2603 const unsigned char *secret
,
2604 unsigned char *fin
, size_t finlen
);
2605 int tls13_generate_secret(SSL
*s
, const EVP_MD
*md
,
2606 const unsigned char *prevsecret
,
2607 const unsigned char *insecret
,
2609 unsigned char *outsecret
);
2610 __owur
int tls13_generate_handshake_secret(SSL
*s
,
2611 const unsigned char *insecret
,
2612 size_t insecretlen
);
2613 __owur
int tls13_generate_master_secret(SSL
*s
, unsigned char *out
,
2614 unsigned char *prev
, size_t prevlen
,
2615 size_t *secret_size
);
2616 __owur
int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2617 const char *label
, size_t llen
,
2618 const unsigned char *p
, size_t plen
,
2620 __owur
int tls13_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2621 const char *label
, size_t llen
,
2622 const unsigned char *context
,
2623 size_t contextlen
, int use_context
);
2624 __owur
int tls13_export_keying_material_early(SSL
*s
, unsigned char *out
,
2625 size_t olen
, const char *label
,
2627 const unsigned char *context
,
2629 __owur
int tls1_alert_code(int code
);
2630 __owur
int tls13_alert_code(int code
);
2631 __owur
int ssl3_alert_code(int code
);
2633 # ifndef OPENSSL_NO_EC
2634 __owur
int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
);
2637 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
);
2639 __owur
const TLS_GROUP_INFO
*tls1_group_id_lookup(SSL_CTX
*ctx
, uint16_t curve_id
);
2640 __owur
int tls1_group_id2nid(uint16_t group_id
, int include_unknown
);
2641 __owur
int tls1_check_group_id(SSL
*s
, uint16_t group_id
, int check_own_curves
);
2642 __owur
uint16_t tls1_shared_group(SSL
*s
, int nmatch
);
2643 __owur
int tls1_set_groups(uint16_t **pext
, size_t *pextlen
,
2644 int *curves
, size_t ncurves
);
2645 __owur
int tls1_set_groups_list(SSL_CTX
*ctx
, uint16_t **pext
, size_t *pextlen
,
2647 __owur EVP_PKEY
*ssl_generate_pkey_group(SSL
*s
, uint16_t id
);
2648 __owur
int tls_valid_group(SSL
*s
, uint16_t group_id
, int minversion
,
2650 __owur EVP_PKEY
*ssl_generate_param_group(SSL
*s
, uint16_t id
);
2651 # ifndef OPENSSL_NO_EC
2652 void tls1_get_formatlist(SSL
*s
, const unsigned char **pformats
,
2653 size_t *num_formats
);
2654 __owur
int tls1_check_ec_tmp_key(SSL
*s
, unsigned long id
);
2655 # endif /* OPENSSL_NO_EC */
2657 __owur
int tls_group_allowed(SSL
*s
, uint16_t curve
, int op
);
2658 void tls1_get_supported_groups(SSL
*s
, const uint16_t **pgroups
,
2659 size_t *pgroupslen
);
2661 __owur
int tls1_set_server_sigalgs(SSL
*s
);
2663 __owur SSL_TICKET_STATUS
tls_get_ticket_from_client(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2665 __owur SSL_TICKET_STATUS
tls_decrypt_ticket(SSL
*s
, const unsigned char *etick
,
2667 const unsigned char *sess_id
,
2668 size_t sesslen
, SSL_SESSION
**psess
);
2670 __owur
int tls_use_ticket(SSL
*s
);
2672 void ssl_set_sig_mask(uint32_t *pmask_a
, SSL
*s
, int op
);
2674 __owur
int tls1_set_sigalgs_list(CERT
*c
, const char *str
, int client
);
2675 __owur
int tls1_set_raw_sigalgs(CERT
*c
, const uint16_t *psigs
, size_t salglen
,
2677 __owur
int tls1_set_sigalgs(CERT
*c
, const int *salg
, size_t salglen
,
2679 int tls1_check_chain(SSL
*s
, X509
*x
, EVP_PKEY
*pk
, STACK_OF(X509
) *chain
,
2681 void tls1_set_cert_validity(SSL
*s
);
2683 # ifndef OPENSSL_NO_CT
2684 __owur
int ssl_validate_ct(SSL
*s
);
2687 # ifndef OPENSSL_NO_DH
2688 __owur DH
*ssl_get_auto_dh(SSL
*s
);
2691 __owur
int ssl_security_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
, int vfy
, int is_ee
);
2692 __owur
int ssl_security_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
, X509
*ex
,
2695 int tls_choose_sigalg(SSL
*s
, int fatalerrs
);
2697 __owur EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
);
2698 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
);
2699 __owur
long ssl_get_algorithm2(SSL
*s
);
2700 __owur
int tls12_copy_sigalgs(SSL
*s
, WPACKET
*pkt
,
2701 const uint16_t *psig
, size_t psiglen
);
2702 __owur
int tls1_save_u16(PACKET
*pkt
, uint16_t **pdest
, size_t *pdestlen
);
2703 __owur
int tls1_save_sigalgs(SSL
*s
, PACKET
*pkt
, int cert
);
2704 __owur
int tls1_process_sigalgs(SSL
*s
);
2705 __owur
int tls1_set_peer_legacy_sigalg(SSL
*s
, const EVP_PKEY
*pkey
);
2706 __owur
int tls1_lookup_md(SSL_CTX
*ctx
, const SIGALG_LOOKUP
*lu
,
2707 const EVP_MD
**pmd
);
2708 __owur
size_t tls12_get_psigalgs(SSL
*s
, int sent
, const uint16_t **psigs
);
2709 # ifndef OPENSSL_NO_EC
2710 __owur
int tls_check_sigalg_curve(const SSL
*s
, int curve
);
2712 __owur
int tls12_check_peer_sigalg(SSL
*s
, uint16_t, EVP_PKEY
*pkey
);
2713 __owur
int ssl_set_client_disabled(SSL
*s
);
2714 __owur
int ssl_cipher_disabled(const SSL
*s
, const SSL_CIPHER
*c
, int op
, int echde
);
2716 __owur
int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
2718 __owur
const EVP_MD
*ssl_md(SSL_CTX
*ctx
, int idx
);
2719 __owur
const EVP_MD
*ssl_handshake_md(SSL
*s
);
2720 __owur
const EVP_MD
*ssl_prf_md(SSL
*s
);
2723 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2724 * with |ssl|, if logging is enabled. It returns one on success and zero on
2725 * failure. The entry is identified by the first 8 bytes of
2726 * |encrypted_premaster|.
2728 __owur
int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
2729 const uint8_t *encrypted_premaster
,
2730 size_t encrypted_premaster_len
,
2731 const uint8_t *premaster
,
2732 size_t premaster_len
);
2735 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2736 * logging is available. It returns one on success and zero on failure. It tags
2737 * the entry with |label|.
2739 __owur
int ssl_log_secret(SSL
*ssl
, const char *label
,
2740 const uint8_t *secret
, size_t secret_len
);
2742 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2743 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2744 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2745 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2746 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2747 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2748 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2749 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2751 # ifndef OPENSSL_NO_KTLS
2753 int ktls_check_supported_cipher(const SSL
*s
, const EVP_CIPHER
*c
,
2754 const EVP_CIPHER_CTX
*dd
);
2755 int ktls_configure_crypto(const SSL
*s
, const EVP_CIPHER
*c
, EVP_CIPHER_CTX
*dd
,
2756 void *rl_sequence
, ktls_crypto_info_t
*crypto_info
,
2757 unsigned char **rec_seq
, unsigned char *iv
,
2758 unsigned char *key
, unsigned char *mac_key
,
2759 size_t mac_secret_size
);
2763 __owur
char ssl3_cbc_record_digest_supported(const EVP_MD_CTX
*ctx
);
2764 __owur
int ssl3_cbc_digest_record(const EVP_MD
*md
,
2765 unsigned char *md_out
,
2766 size_t *md_out_size
,
2767 const unsigned char header
[13],
2768 const unsigned char *data
,
2770 size_t data_plus_mac_plus_padding_size
,
2771 const unsigned char *mac_secret
,
2772 size_t mac_secret_length
, char is_sslv3
);
2774 __owur
int srp_generate_server_master_secret(SSL
*s
);
2775 __owur
int srp_generate_client_master_secret(SSL
*s
);
2776 __owur
int srp_verify_server_param(SSL
*s
);
2778 /* statem/statem_srvr.c */
2780 __owur
int send_certificate_request(SSL
*s
);
2782 /* statem/extensions_cust.c */
2784 custom_ext_method
*custom_ext_find(const custom_ext_methods
*exts
,
2785 ENDPOINT role
, unsigned int ext_type
,
2788 void custom_ext_init(custom_ext_methods
*meths
);
2790 __owur
int custom_ext_parse(SSL
*s
, unsigned int context
, unsigned int ext_type
,
2791 const unsigned char *ext_data
, size_t ext_size
,
2792 X509
*x
, size_t chainidx
);
2793 __owur
int custom_ext_add(SSL
*s
, int context
, WPACKET
*pkt
, X509
*x
,
2794 size_t chainidx
, int maxversion
);
2796 __owur
int custom_exts_copy(custom_ext_methods
*dst
,
2797 const custom_ext_methods
*src
);
2798 __owur
int custom_exts_copy_flags(custom_ext_methods
*dst
,
2799 const custom_ext_methods
*src
);
2800 void custom_exts_free(custom_ext_methods
*exts
);
2802 void ssl_comp_free_compression_methods_int(void);
2805 void ssl_ctx_system_config(SSL_CTX
*ctx
);
2807 const EVP_CIPHER
*ssl_evp_cipher_fetch(OPENSSL_CTX
*libctx
,
2809 const char *properties
);
2810 int ssl_evp_cipher_up_ref(const EVP_CIPHER
*cipher
);
2811 void ssl_evp_cipher_free(const EVP_CIPHER
*cipher
);
2812 const EVP_MD
*ssl_evp_md_fetch(OPENSSL_CTX
*libctx
,
2814 const char *properties
);
2815 int ssl_evp_md_up_ref(const EVP_MD
*md
);
2816 void ssl_evp_md_free(const EVP_MD
*md
);
2818 int tls_provider_set_tls_params(SSL
*s
, EVP_CIPHER_CTX
*ctx
,
2819 const EVP_CIPHER
*ciph
,
2822 # else /* OPENSSL_UNIT_TEST */
2824 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2825 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers