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/dsa.h>
25 # include <openssl/err.h>
26 # include <openssl/ssl.h>
27 # include <openssl/async.h>
28 # include <openssl/symhacks.h>
29 # include <openssl/ct.h>
30 # include "record/record.h"
31 # include "statem/statem.h"
32 # include "internal/packet.h"
33 # include "internal/dane.h"
34 # include "internal/refcount.h"
35 # include "internal/tsan_assist.h"
36 # include "internal/bio.h"
37 # include "internal/ktls.h"
39 # ifdef OPENSSL_BUILD_SHLIBSSL
40 # undef OPENSSL_EXTERN
41 # define OPENSSL_EXTERN OPENSSL_EXPORT
44 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
45 l|=(((unsigned long)(*((c)++)))<< 8), \
46 l|=(((unsigned long)(*((c)++)))<<16), \
47 l|=(((unsigned long)(*((c)++)))<<24))
49 /* NOTE - c is not incremented as per c2l */
50 # define c2ln(c,l1,l2,n) { \
54 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
55 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
56 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
57 case 5: l2|=((unsigned long)(*(--(c)))); \
58 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
59 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
60 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
61 case 1: l1|=((unsigned long)(*(--(c)))); \
65 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
66 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
67 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
68 *((c)++)=(unsigned char)(((l)>>24)&0xff))
70 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
71 l|=((unsigned long)(*((c)++)))<<16, \
72 l|=((unsigned long)(*((c)++)))<< 8, \
73 l|=((unsigned long)(*((c)++))))
75 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
76 l|=((uint64_t)(*((c)++)))<<48, \
77 l|=((uint64_t)(*((c)++)))<<40, \
78 l|=((uint64_t)(*((c)++)))<<32, \
79 l|=((uint64_t)(*((c)++)))<<24, \
80 l|=((uint64_t)(*((c)++)))<<16, \
81 l|=((uint64_t)(*((c)++)))<< 8, \
82 l|=((uint64_t)(*((c)++))))
85 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
86 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
87 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
88 *((c)++)=(unsigned char)(((l) )&0xff))
90 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
91 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
93 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
94 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
95 *((c)++)=(unsigned char)(((l) )&0xff))
97 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
98 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
102 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
103 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
104 *((c)++)=(unsigned char)(((l) )&0xff))
106 /* NOTE - c is not incremented as per l2c */
107 # define l2cn(l1,l2,c,n) { \
110 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
111 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
112 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
113 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
114 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
115 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
116 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
117 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
121 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
122 (((unsigned int)((c)[1])) )),(c)+=2)
123 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
124 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
126 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
127 (((unsigned long)((c)[1]))<< 8)| \
128 (((unsigned long)((c)[2])) )),(c)+=3)
130 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
131 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
132 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
134 # define TLS_MAX_VERSION_INTERNAL TLS1_3_VERSION
135 # define DTLS_MAX_VERSION_INTERNAL DTLS1_2_VERSION
138 * DTLS version numbers are strange because they're inverted. Except for
139 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
141 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
142 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
143 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
144 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
145 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
149 * Define the Bitmasks for SSL_CIPHER.algorithms.
150 * This bits are used packed as dense as possible. If new methods/ciphers
151 * etc will be added, the bits a likely to change, so this information
152 * is for internal library use only, even though SSL_CIPHER.algorithms
153 * can be publicly accessed.
154 * Use the according functions for cipher management instead.
156 * The bit mask handling in the selection and sorting scheme in
157 * ssl_create_cipher_list() has only limited capabilities, reflecting
158 * that the different entities within are mutually exclusive:
159 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
162 /* Bits for algorithm_mkey (key exchange algorithm) */
163 /* RSA key exchange */
164 # define SSL_kRSA 0x00000001U
165 /* tmp DH key no DH cert */
166 # define SSL_kDHE 0x00000002U
168 # define SSL_kEDH SSL_kDHE
170 # define SSL_kECDHE 0x00000004U
172 # define SSL_kEECDH SSL_kECDHE
174 # define SSL_kPSK 0x00000008U
175 /* GOST key exchange */
176 # define SSL_kGOST 0x00000010U
178 # define SSL_kSRP 0x00000020U
180 # define SSL_kRSAPSK 0x00000040U
181 # define SSL_kECDHEPSK 0x00000080U
182 # define SSL_kDHEPSK 0x00000100U
183 /* GOST KDF key exchange, draft-smyshlyaev-tls12-gost-suites */
184 # define SSL_kGOST18 0x00000200U
188 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
190 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
191 # define SSL_kANY 0x00000000U
193 /* Bits for algorithm_auth (server authentication) */
195 # define SSL_aRSA 0x00000001U
197 # define SSL_aDSS 0x00000002U
198 /* no auth (i.e. use ADH or AECDH) */
199 # define SSL_aNULL 0x00000004U
201 # define SSL_aECDSA 0x00000008U
203 # define SSL_aPSK 0x00000010U
204 /* GOST R 34.10-2001 signature auth */
205 # define SSL_aGOST01 0x00000020U
207 # define SSL_aSRP 0x00000040U
208 /* GOST R 34.10-2012 signature auth */
209 # define SSL_aGOST12 0x00000080U
210 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
211 # define SSL_aANY 0x00000000U
212 /* All bits requiring a certificate */
214 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
216 /* Bits for algorithm_enc (symmetric encryption) */
217 # define SSL_DES 0x00000001U
218 # define SSL_3DES 0x00000002U
219 # define SSL_RC4 0x00000004U
220 # define SSL_RC2 0x00000008U
221 # define SSL_IDEA 0x00000010U
222 # define SSL_eNULL 0x00000020U
223 # define SSL_AES128 0x00000040U
224 # define SSL_AES256 0x00000080U
225 # define SSL_CAMELLIA128 0x00000100U
226 # define SSL_CAMELLIA256 0x00000200U
227 # define SSL_eGOST2814789CNT 0x00000400U
228 # define SSL_SEED 0x00000800U
229 # define SSL_AES128GCM 0x00001000U
230 # define SSL_AES256GCM 0x00002000U
231 # define SSL_AES128CCM 0x00004000U
232 # define SSL_AES256CCM 0x00008000U
233 # define SSL_AES128CCM8 0x00010000U
234 # define SSL_AES256CCM8 0x00020000U
235 # define SSL_eGOST2814789CNT12 0x00040000U
236 # define SSL_CHACHA20POLY1305 0x00080000U
237 # define SSL_ARIA128GCM 0x00100000U
238 # define SSL_ARIA256GCM 0x00200000U
239 # define SSL_MAGMA 0x00400000U
240 # define SSL_KUZNYECHIK 0x00800000U
242 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
243 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
244 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
245 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
246 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
247 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
248 # define SSL_ARIA (SSL_ARIAGCM)
249 # define SSL_CBC (SSL_DES | SSL_3DES | SSL_RC2 | SSL_IDEA \
250 | SSL_AES128 | SSL_AES256 | SSL_CAMELLIA128 \
251 | SSL_CAMELLIA256 | SSL_SEED)
253 /* Bits for algorithm_mac (symmetric authentication) */
255 # define SSL_MD5 0x00000001U
256 # define SSL_SHA1 0x00000002U
257 # define SSL_GOST94 0x00000004U
258 # define SSL_GOST89MAC 0x00000008U
259 # define SSL_SHA256 0x00000010U
260 # define SSL_SHA384 0x00000020U
261 /* Not a real MAC, just an indication it is part of cipher */
262 # define SSL_AEAD 0x00000040U
263 # define SSL_GOST12_256 0x00000080U
264 # define SSL_GOST89MAC12 0x00000100U
265 # define SSL_GOST12_512 0x00000200U
266 # define SSL_MAGMAOMAC 0x00000400U
267 # define SSL_KUZNYECHIKOMAC 0x00000800U
270 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
271 * sure to update this constant too
274 # define SSL_MD_MD5_IDX 0
275 # define SSL_MD_SHA1_IDX 1
276 # define SSL_MD_GOST94_IDX 2
277 # define SSL_MD_GOST89MAC_IDX 3
278 # define SSL_MD_SHA256_IDX 4
279 # define SSL_MD_SHA384_IDX 5
280 # define SSL_MD_GOST12_256_IDX 6
281 # define SSL_MD_GOST89MAC12_IDX 7
282 # define SSL_MD_GOST12_512_IDX 8
283 # define SSL_MD_MD5_SHA1_IDX 9
284 # define SSL_MD_SHA224_IDX 10
285 # define SSL_MD_SHA512_IDX 11
286 # define SSL_MD_MAGMAOMAC_IDX 12
287 # define SSL_MD_KUZNYECHIKOMAC_IDX 13
288 # define SSL_MAX_DIGEST 14
290 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST
292 /* Bits for algorithm2 (handshake digests and other extra flags) */
294 /* Bits 0-7 are handshake MAC */
295 # define SSL_HANDSHAKE_MAC_MASK 0xFF
296 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
297 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
298 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
299 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
300 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
301 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
302 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
304 /* Bits 8-15 bits are PRF */
305 # define TLS1_PRF_DGST_SHIFT 8
306 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
307 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
308 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
309 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
310 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
311 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
312 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
315 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
316 * goes into algorithm2)
318 # define TLS1_STREAM_MAC 0x10000
320 * TLSTREE cipher/mac key derivation from draft-smyshlyaev-tls12-gost-suites
321 * (currently this also goes into algorithm2)
323 # define TLS1_TLSTREE 0x20000
325 # define SSL_STRONG_MASK 0x0000001FU
326 # define SSL_DEFAULT_MASK 0X00000020U
328 # define SSL_STRONG_NONE 0x00000001U
329 # define SSL_LOW 0x00000002U
330 # define SSL_MEDIUM 0x00000004U
331 # define SSL_HIGH 0x00000008U
332 # define SSL_FIPS 0x00000010U
333 # define SSL_NOT_DEFAULT 0x00000020U
335 /* we have used 0000003f - 26 bits left to go */
337 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
338 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
340 /* Check if an SSL structure is using DTLS */
341 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
343 /* Check if we are using TLSv1.3 */
344 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
345 && (s)->method->version >= TLS1_3_VERSION \
346 && (s)->method->version != TLS_ANY_VERSION)
348 # define SSL_TREAT_AS_TLS13(s) \
349 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
350 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
351 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
352 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
353 || (s)->hello_retry_request == SSL_HRR_PENDING)
355 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3.tmp.finish_md_len == 0 \
356 || (s)->s3.tmp.peer_finish_md_len == 0)
358 /* See if we need explicit IV */
359 # define SSL_USE_EXPLICIT_IV(s) \
360 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
362 * See if we use signature algorithms extension and signature algorithm
365 # define SSL_USE_SIGALGS(s) \
366 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
368 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
369 * apply to others in future.
371 # define SSL_USE_TLS1_2_CIPHERS(s) \
372 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
374 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
375 * flags because it may not be set to correct version yet.
377 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
378 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
379 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
381 * Determine if a client should send signature algorithms extension:
382 * as with TLS1.2 cipher we can't rely on method flags.
384 # define SSL_CLIENT_USE_SIGALGS(s) \
385 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
387 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
388 (((value) >= TLSEXT_max_fragment_length_512) && \
389 ((value) <= TLSEXT_max_fragment_length_4096))
390 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
391 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
392 # define GET_MAX_FRAGMENT_LENGTH(session) \
393 (512U << (session->ext.max_fragment_len_mode - 1))
395 # define SSL_READ_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
396 # define SSL_WRITE_ETM(s) (s->s3.flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
398 /* Mostly for SSLv3 */
399 # define SSL_PKEY_RSA 0
400 # define SSL_PKEY_RSA_PSS_SIGN 1
401 # define SSL_PKEY_DSA_SIGN 2
402 # define SSL_PKEY_ECC 3
403 # define SSL_PKEY_GOST01 4
404 # define SSL_PKEY_GOST12_256 5
405 # define SSL_PKEY_GOST12_512 6
406 # define SSL_PKEY_ED25519 7
407 # define SSL_PKEY_ED448 8
408 # define SSL_PKEY_NUM 9
410 # define SSL_ENC_DES_IDX 0
411 # define SSL_ENC_3DES_IDX 1
412 # define SSL_ENC_RC4_IDX 2
413 # define SSL_ENC_RC2_IDX 3
414 # define SSL_ENC_IDEA_IDX 4
415 # define SSL_ENC_NULL_IDX 5
416 # define SSL_ENC_AES128_IDX 6
417 # define SSL_ENC_AES256_IDX 7
418 # define SSL_ENC_CAMELLIA128_IDX 8
419 # define SSL_ENC_CAMELLIA256_IDX 9
420 # define SSL_ENC_GOST89_IDX 10
421 # define SSL_ENC_SEED_IDX 11
422 # define SSL_ENC_AES128GCM_IDX 12
423 # define SSL_ENC_AES256GCM_IDX 13
424 # define SSL_ENC_AES128CCM_IDX 14
425 # define SSL_ENC_AES256CCM_IDX 15
426 # define SSL_ENC_AES128CCM8_IDX 16
427 # define SSL_ENC_AES256CCM8_IDX 17
428 # define SSL_ENC_GOST8912_IDX 18
429 # define SSL_ENC_CHACHA_IDX 19
430 # define SSL_ENC_ARIA128GCM_IDX 20
431 # define SSL_ENC_ARIA256GCM_IDX 21
432 # define SSL_ENC_MAGMA_IDX 22
433 # define SSL_ENC_KUZNYECHIK_IDX 23
434 # define SSL_ENC_NUM_IDX 24
437 * SSL_kRSA <- RSA_ENC
438 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
439 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
440 * SSL_aRSA <- RSA_ENC | RSA_SIGN
441 * SSL_aDSS <- DSA_SIGN
445 #define CERT_INVALID 0
446 #define CERT_PUBLIC_KEY 1
447 #define CERT_PRIVATE_KEY 2
450 /* Post-Handshake Authentication state */
453 SSL_PHA_EXT_SENT
, /* client-side only: extension sent */
454 SSL_PHA_EXT_RECEIVED
, /* server-side only: extension received */
455 SSL_PHA_REQUEST_PENDING
, /* server-side only: request pending */
456 SSL_PHA_REQUESTED
/* request received by client, or sent by server */
459 /* CipherSuite length. SSLv3 and all TLS versions. */
460 # define TLS_CIPHER_LEN 2
461 /* used to hold info on the particular ciphers used */
462 struct ssl_cipher_st
{
464 const char *name
; /* text name */
465 const char *stdname
; /* RFC name */
466 uint32_t id
; /* id, 4 bytes, first is version */
468 * changed in 1.0.0: these four used to be portions of a single value
471 uint32_t algorithm_mkey
; /* key exchange algorithm */
472 uint32_t algorithm_auth
; /* server authentication */
473 uint32_t algorithm_enc
; /* symmetric encryption */
474 uint32_t algorithm_mac
; /* symmetric authentication */
475 int min_tls
; /* minimum SSL/TLS protocol version */
476 int max_tls
; /* maximum SSL/TLS protocol version */
477 int min_dtls
; /* minimum DTLS protocol version */
478 int max_dtls
; /* maximum DTLS protocol version */
479 uint32_t algo_strength
; /* strength and export flags */
480 uint32_t algorithm2
; /* Extra flags */
481 int32_t strength_bits
; /* Number of bits really used */
482 uint32_t alg_bits
; /* Number of bits for algorithm */
485 /* Used to hold SSL/TLS functions */
486 struct ssl_method_st
{
490 int (*ssl_new
) (SSL
*s
);
491 int (*ssl_clear
) (SSL
*s
);
492 void (*ssl_free
) (SSL
*s
);
493 int (*ssl_accept
) (SSL
*s
);
494 int (*ssl_connect
) (SSL
*s
);
495 int (*ssl_read
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
496 int (*ssl_peek
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
497 int (*ssl_write
) (SSL
*s
, const void *buf
, size_t len
, size_t *written
);
498 int (*ssl_shutdown
) (SSL
*s
);
499 int (*ssl_renegotiate
) (SSL
*s
);
500 int (*ssl_renegotiate_check
) (SSL
*s
, int);
501 int (*ssl_read_bytes
) (SSL
*s
, int type
, int *recvd_type
,
502 unsigned char *buf
, size_t len
, int peek
,
504 int (*ssl_write_bytes
) (SSL
*s
, int type
, const void *buf_
, size_t len
,
506 int (*ssl_dispatch_alert
) (SSL
*s
);
507 long (*ssl_ctrl
) (SSL
*s
, int cmd
, long larg
, void *parg
);
508 long (*ssl_ctx_ctrl
) (SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
);
509 const SSL_CIPHER
*(*get_cipher_by_char
) (const unsigned char *ptr
);
510 int (*put_cipher_by_char
) (const SSL_CIPHER
*cipher
, WPACKET
*pkt
,
512 size_t (*ssl_pending
) (const SSL
*s
);
513 int (*num_ciphers
) (void);
514 const SSL_CIPHER
*(*get_cipher
) (unsigned ncipher
);
515 long (*get_timeout
) (void);
516 const struct ssl3_enc_method
*ssl3_enc
; /* Extra SSLv3/TLS stuff */
517 int (*ssl_version
) (void);
518 long (*ssl_callback_ctrl
) (SSL
*s
, int cb_id
, void (*fp
) (void));
519 long (*ssl_ctx_callback_ctrl
) (SSL_CTX
*s
, int cb_id
, void (*fp
) (void));
523 * Matches the length of PSK_MAX_PSK_LEN. We keep it the same value for
524 * consistency, even in the event of OPENSSL_NO_PSK being defined.
526 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 512
529 * Lets make this into an ASN.1 type structure as follows
530 * SSL_SESSION_ID ::= SEQUENCE {
531 * version INTEGER, -- structure version number
532 * SSLversion INTEGER, -- SSL version number
533 * Cipher OCTET STRING, -- the 3 byte cipher ID
534 * Session_ID OCTET STRING, -- the Session ID
535 * Master_key OCTET STRING, -- the master key
536 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
537 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
538 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
539 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
540 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
541 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
542 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
543 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
544 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
545 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
546 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
547 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
548 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
549 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
551 * Look in ssl/ssl_asn1.c for more details
552 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
554 struct ssl_session_st
{
555 int ssl_version
; /* what ssl version session info is being kept
557 size_t master_key_length
;
559 /* TLSv1.3 early_secret used for external PSKs */
560 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
562 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
565 unsigned char master_key
[TLS13_MAX_RESUMPTION_PSK_LENGTH
];
566 /* session_id - valid? */
567 size_t session_id_length
;
568 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
570 * this is used to determine whether the session is being reused in the
571 * appropriate context. It is up to the application to set this, via
574 size_t sid_ctx_length
;
575 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
576 # ifndef OPENSSL_NO_PSK
577 char *psk_identity_hint
;
581 * Used to indicate that session resumption is not allowed. Applications
582 * can also set this bit for a new session via not_resumable_session_cb
583 * to disable session caching and tickets.
586 /* This is the cert and type for the other end. */
589 /* Certificate chain peer sent. */
590 STACK_OF(X509
) *peer_chain
;
592 * when app_verify_callback accepts a session where the peer's
593 * certificate is not ok, we must remember the error for session reuse:
595 long verify_result
; /* only for servers */
596 CRYPTO_REF_COUNT references
;
599 unsigned int compress_meth
; /* Need to lookup the method */
600 const SSL_CIPHER
*cipher
;
601 unsigned long cipher_id
; /* when ASN.1 loaded, this needs to be used to
602 * load the 'cipher' structure */
603 CRYPTO_EX_DATA ex_data
; /* application specific data */
605 * These are used to make removal of session-ids more efficient and to
606 * implement a maximum cache size.
608 struct ssl_session_st
*prev
, *next
;
613 unsigned char *tick
; /* Session ticket */
614 size_t ticklen
; /* Session ticket length */
615 /* Session lifetime hint in seconds */
616 unsigned long tick_lifetime_hint
;
617 uint32_t tick_age_add
;
618 /* Max number of bytes that can be sent as early data */
619 uint32_t max_early_data
;
620 /* The ALPN protocol selected for this session */
621 unsigned char *alpn_selected
;
622 size_t alpn_selected_len
;
624 * Maximum Fragment Length as per RFC 4366.
625 * If this value does not contain RFC 4366 allowed values (1-4) then
626 * either the Maximum Fragment Length Negotiation failed or was not
629 uint8_t max_fragment_len_mode
;
631 # ifndef OPENSSL_NO_SRP
634 unsigned char *ticket_appdata
;
635 size_t ticket_appdata_len
;
640 /* Extended master secret support */
641 # define SSL_SESS_FLAG_EXTMS 0x1
643 # ifndef OPENSSL_NO_SRP
645 typedef struct srp_ctx_st
{
646 /* param for all the callbacks */
648 /* set client Hello login callback */
649 int (*TLS_ext_srp_username_callback
) (SSL
*, int *, void *);
650 /* set SRP N/g param callback for verification */
651 int (*SRP_verify_param_callback
) (SSL
*, void *);
652 /* set SRP client passwd callback */
653 char *(*SRP_give_srp_client_pwd_callback
) (SSL
*, void *);
655 BIGNUM
*N
, *g
, *s
, *B
, *A
;
659 unsigned long srp_Mask
;
665 SSL_EARLY_DATA_NONE
= 0,
666 SSL_EARLY_DATA_CONNECT_RETRY
,
667 SSL_EARLY_DATA_CONNECTING
,
668 SSL_EARLY_DATA_WRITE_RETRY
,
669 SSL_EARLY_DATA_WRITING
,
670 SSL_EARLY_DATA_WRITE_FLUSH
,
671 SSL_EARLY_DATA_UNAUTH_WRITING
,
672 SSL_EARLY_DATA_FINISHED_WRITING
,
673 SSL_EARLY_DATA_ACCEPT_RETRY
,
674 SSL_EARLY_DATA_ACCEPTING
,
675 SSL_EARLY_DATA_READ_RETRY
,
676 SSL_EARLY_DATA_READING
,
677 SSL_EARLY_DATA_FINISHED_READING
678 } SSL_EARLY_DATA_STATE
;
681 * We check that the amount of unreadable early data doesn't exceed
682 * max_early_data. max_early_data is given in plaintext bytes. However if it is
683 * unreadable then we only know the number of ciphertext bytes. We also don't
684 * know how much the overhead should be because it depends on the ciphersuite.
685 * We make a small allowance. We assume 5 records of actual data plus the end
686 * of early data alert record. Each record has a tag and a content type byte.
687 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
688 * content of the alert record either which is 2 bytes.
690 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
693 * The allowance we have between the client's calculated ticket age and our own.
694 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
695 * client's age calculation is different by more than this than our own then we
696 * do not allow that ticket for early_data.
698 # define TICKET_AGE_ALLOWANCE (10 * 1000)
700 #define MAX_COMPRESSIONS_SIZE 255
708 typedef struct raw_extension_st
{
709 /* Raw packet data for the extension */
711 /* Set to 1 if the extension is present or 0 otherwise */
713 /* Set to 1 if we have already parsed the extension or 0 otherwise */
715 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
717 /* Track what order extensions are received in (0-based). */
718 size_t received_order
;
723 unsigned int legacy_version
;
724 unsigned char random
[SSL3_RANDOM_SIZE
];
725 size_t session_id_len
;
726 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
727 size_t dtls_cookie_len
;
728 unsigned char dtls_cookie
[DTLS1_COOKIE_LENGTH
];
730 size_t compressions_len
;
731 unsigned char compressions
[MAX_COMPRESSIONS_SIZE
];
733 size_t pre_proc_exts_len
;
734 RAW_EXTENSION
*pre_proc_exts
;
738 * Extension index values NOTE: Any updates to these defines should be mirrored
739 * with equivalent updates to ext_defs in extensions.c
741 typedef enum tlsext_index_en
{
742 TLSEXT_IDX_renegotiate
,
743 TLSEXT_IDX_server_name
,
744 TLSEXT_IDX_max_fragment_length
,
746 TLSEXT_IDX_ec_point_formats
,
747 TLSEXT_IDX_supported_groups
,
748 TLSEXT_IDX_session_ticket
,
749 TLSEXT_IDX_status_request
,
750 TLSEXT_IDX_next_proto_neg
,
751 TLSEXT_IDX_application_layer_protocol_negotiation
,
753 TLSEXT_IDX_encrypt_then_mac
,
754 TLSEXT_IDX_signed_certificate_timestamp
,
755 TLSEXT_IDX_extended_master_secret
,
756 TLSEXT_IDX_signature_algorithms_cert
,
757 TLSEXT_IDX_post_handshake_auth
,
758 TLSEXT_IDX_signature_algorithms
,
759 TLSEXT_IDX_supported_versions
,
760 TLSEXT_IDX_psk_kex_modes
,
761 TLSEXT_IDX_key_share
,
763 TLSEXT_IDX_cryptopro_bug
,
764 TLSEXT_IDX_early_data
,
765 TLSEXT_IDX_certificate_authorities
,
768 /* Dummy index - must always be the last entry */
769 TLSEXT_IDX_num_builtins
772 DEFINE_LHASH_OF(SSL_SESSION
);
773 /* Needed in ssl_cert.c */
774 DEFINE_LHASH_OF(X509_NAME
);
776 # define TLSEXT_KEYNAME_LENGTH 16
777 # define TLSEXT_TICK_KEY_LENGTH 32
779 typedef struct ssl_ctx_ext_secure_st
{
780 unsigned char tick_hmac_key
[TLSEXT_TICK_KEY_LENGTH
];
781 unsigned char tick_aes_key
[TLSEXT_TICK_KEY_LENGTH
];
782 } SSL_CTX_EXT_SECURE
;
785 * Helper function for HMAC
786 * The structure should be considered opaque, it will change once the low
787 * level deprecated calls are removed. At that point it can be replaced
788 * by EVP_MAC_CTX and most of the functions converted to macros or inlined
791 typedef struct ssl_hmac_st
{
793 # ifndef OPENSSL_NO_DEPRECATED_3_0
798 SSL_HMAC
*ssl_hmac_new(const SSL_CTX
*ctx
);
799 void ssl_hmac_free(SSL_HMAC
*ctx
);
800 # ifndef OPENSSL_NO_DEPRECATED_3_0
801 HMAC_CTX
*ssl_hmac_get0_HMAC_CTX(SSL_HMAC
*ctx
);
803 EVP_MAC_CTX
*ssl_hmac_get0_EVP_MAC_CTX(SSL_HMAC
*ctx
);
804 int ssl_hmac_init(SSL_HMAC
*ctx
, void *key
, size_t len
, char *md
);
805 int ssl_hmac_update(SSL_HMAC
*ctx
, const unsigned char *data
, size_t len
);
806 int ssl_hmac_final(SSL_HMAC
*ctx
, unsigned char *md
, size_t *len
,
808 size_t ssl_hmac_size(const SSL_HMAC
*ctx
);
810 int ssl_get_EC_curve_nid(const EVP_PKEY
*pkey
);
812 typedef struct tls_group_info_st
{
813 char *tlsname
; /* Curve Name as in TLS specs */
814 char *realname
; /* Curve Name according to provider */
815 char *algorithm
; /* Algorithm name to fetch */
816 unsigned int secbits
; /* Bits of security (from SP800-57) */
817 uint16_t group_id
; /* Group ID */
818 int mintls
; /* Minimum TLS version, -1 unsupported */
819 int maxtls
; /* Maximum TLS version (or 0 for undefined) */
820 int mindtls
; /* Minimum DTLS version, -1 unsupported */
821 int maxdtls
; /* Maximum DTLS version (or 0 for undefined) */
822 char is_kem
; /* Mode for this Group: 0 is KEX, 1 is KEM */
826 # define TLS_GROUP_TYPE 0x0000000FU /* Mask for group type */
827 # define TLS_GROUP_CURVE_PRIME 0x00000001U
828 # define TLS_GROUP_CURVE_CHAR2 0x00000002U
829 # define TLS_GROUP_CURVE_CUSTOM 0x00000004U
830 # define TLS_GROUP_FFDHE 0x00000008U
831 # define TLS_GROUP_ONLY_FOR_TLS1_3 0x00000010U
833 # define TLS_GROUP_FFDHE_FOR_TLS1_3 (TLS_GROUP_FFDHE|TLS_GROUP_ONLY_FOR_TLS1_3)
836 OSSL_LIB_CTX
*libctx
;
838 const SSL_METHOD
*method
;
839 STACK_OF(SSL_CIPHER
) *cipher_list
;
840 /* same as above but sorted for lookup */
841 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
842 /* TLSv1.3 specific ciphersuites */
843 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
;
844 struct x509_store_st
/* X509_STORE */ *cert_store
;
845 LHASH_OF(SSL_SESSION
) *sessions
;
847 * Most session-ids that will be cached, default is
848 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
850 size_t session_cache_size
;
851 struct ssl_session_st
*session_cache_head
;
852 struct ssl_session_st
*session_cache_tail
;
854 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
855 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
856 * means only SSL_accept will cache SSL_SESSIONS.
858 uint32_t session_cache_mode
;
860 * If timeout is not 0, it is the default timeout value set when
861 * SSL_new() is called. This has been put in to make life easier to set
864 long session_timeout
;
866 * If this callback is not null, it will be called each time a session id
867 * is added to the cache. If this function returns 1, it means that the
868 * callback will do a SSL_SESSION_free() when it has finished using it.
869 * Otherwise, on 0, it means the callback has finished with it. If
870 * remove_session_cb is not null, it will be called when a session-id is
871 * removed from the cache. After the call, OpenSSL will
872 * SSL_SESSION_free() it.
874 int (*new_session_cb
) (struct ssl_st
*ssl
, SSL_SESSION
*sess
);
875 void (*remove_session_cb
) (struct ssl_ctx_st
*ctx
, SSL_SESSION
*sess
);
876 SSL_SESSION
*(*get_session_cb
) (struct ssl_st
*ssl
,
877 const unsigned char *data
, int len
,
880 TSAN_QUALIFIER
int sess_connect
; /* SSL new conn - started */
881 TSAN_QUALIFIER
int sess_connect_renegotiate
; /* SSL reneg - requested */
882 TSAN_QUALIFIER
int sess_connect_good
; /* SSL new conne/reneg - finished */
883 TSAN_QUALIFIER
int sess_accept
; /* SSL new accept - started */
884 TSAN_QUALIFIER
int sess_accept_renegotiate
; /* SSL reneg - requested */
885 TSAN_QUALIFIER
int sess_accept_good
; /* SSL accept/reneg - finished */
886 TSAN_QUALIFIER
int sess_miss
; /* session lookup misses */
887 TSAN_QUALIFIER
int sess_timeout
; /* reuse attempt on timeouted session */
888 TSAN_QUALIFIER
int sess_cache_full
; /* session removed due to full cache */
889 TSAN_QUALIFIER
int sess_hit
; /* session reuse actually done */
890 TSAN_QUALIFIER
int sess_cb_hit
; /* session-id that was not in
891 * the cache was passed back via
892 * the callback. This indicates
893 * that the application is
894 * supplying session-id's from
895 * other processes - spooky
899 CRYPTO_REF_COUNT references
;
901 /* if defined, these override the X509_verify_cert() calls */
902 int (*app_verify_callback
) (X509_STORE_CTX
*, void *);
903 void *app_verify_arg
;
905 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
906 * ('app_verify_callback' was called with just one argument)
909 /* Default password callback. */
910 pem_password_cb
*default_passwd_callback
;
912 /* Default password callback user data. */
913 void *default_passwd_callback_userdata
;
915 /* get client cert callback */
916 int (*client_cert_cb
) (SSL
*ssl
, X509
**x509
, EVP_PKEY
**pkey
);
918 /* cookie generate callback */
919 int (*app_gen_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
920 unsigned int *cookie_len
);
922 /* verify cookie callback */
923 int (*app_verify_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
924 unsigned int cookie_len
);
926 /* TLS1.3 app-controlled cookie generate callback */
927 int (*gen_stateless_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
930 /* TLS1.3 verify app-controlled cookie callback */
931 int (*verify_stateless_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
934 CRYPTO_EX_DATA ex_data
;
936 const EVP_MD
*md5
; /* For SSLv3/TLSv1 'ssl3-md5' */
937 const EVP_MD
*sha1
; /* For SSLv3/TLSv1 'ssl3-sha1' */
939 STACK_OF(X509
) *extra_certs
;
940 STACK_OF(SSL_COMP
) *comp_methods
; /* stack of SSL_COMP, SSLv3/TLSv1 */
942 /* Default values used when no per-SSL value is defined follow */
944 /* used if SSL's info_callback is NULL */
945 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
948 * What we put in certificate_authorities extension for TLS 1.3
949 * (ClientHello and CertificateRequest) or just client cert requests for
950 * earlier versions. If client_ca_names is populated then it is only used
951 * for client cert requests, and in preference to ca_names.
953 STACK_OF(X509_NAME
) *ca_names
;
954 STACK_OF(X509_NAME
) *client_ca_names
;
957 * Default values to use in SSL structures follow (these are copied by
963 int min_proto_version
;
964 int max_proto_version
;
965 size_t max_cert_list
;
967 struct cert_st
/* CERT */ *cert
;
970 /* callback that allows applications to peek at protocol messages */
971 void (*msg_callback
) (int write_p
, int version
, int content_type
,
972 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
973 void *msg_callback_arg
;
975 uint32_t verify_mode
;
976 size_t sid_ctx_length
;
977 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
978 /* called 'verify_callback' in the SSL */
979 int (*default_verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
981 /* Default generate session ID callback. */
982 GEN_SESSION_CB generate_session_id
;
984 X509_VERIFY_PARAM
*param
;
988 # ifndef OPENSSL_NO_CT
989 CTLOG_STORE
*ctlog_store
; /* CT Log Store */
991 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
992 * If they are not, the connection should be aborted.
994 ssl_ct_validation_cb ct_validation_callback
;
995 void *ct_validation_callback_arg
;
999 * If we're using more than one pipeline how should we divide the data
1000 * up between the pipes?
1002 size_t split_send_fragment
;
1004 * Maximum amount of data to send in one fragment. actual record size can
1005 * be more than this due to padding and MAC overheads.
1007 size_t max_send_fragment
;
1009 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1010 size_t max_pipelines
;
1012 /* The default read buffer length to use (0 means not set) */
1013 size_t default_read_buf_len
;
1015 # ifndef OPENSSL_NO_ENGINE
1017 * Engine to pass requests for client certs to
1019 ENGINE
*client_cert_engine
;
1022 /* ClientHello callback. Mostly for extensions, but not entirely. */
1023 SSL_client_hello_cb_fn client_hello_cb
;
1024 void *client_hello_cb_arg
;
1026 /* TLS extensions. */
1028 /* TLS extensions servername callback */
1029 int (*servername_cb
) (SSL
*, int *, void *);
1030 void *servername_arg
;
1031 /* RFC 4507 session ticket keys */
1032 unsigned char tick_key_name
[TLSEXT_KEYNAME_LENGTH
];
1033 SSL_CTX_EXT_SECURE
*secure
;
1034 # ifndef OPENSSL_NO_DEPRECATED_3_0
1035 /* Callback to support customisation of ticket key setting */
1036 int (*ticket_key_cb
) (SSL
*ssl
,
1037 unsigned char *name
, unsigned char *iv
,
1038 EVP_CIPHER_CTX
*ectx
, HMAC_CTX
*hctx
, int enc
);
1040 int (*ticket_key_evp_cb
) (SSL
*ssl
,
1041 unsigned char *name
, unsigned char *iv
,
1042 EVP_CIPHER_CTX
*ectx
, EVP_MAC_CTX
*hctx
,
1045 /* certificate status request info */
1046 /* Callback for status request */
1047 int (*status_cb
) (SSL
*ssl
, void *arg
);
1049 /* ext status type used for CSR extension (OCSP Stapling) */
1051 /* RFC 4366 Maximum Fragment Length Negotiation */
1052 uint8_t max_fragment_len_mode
;
1054 # ifndef OPENSSL_NO_EC
1055 /* EC extension values inherited by SSL structure */
1056 size_t ecpointformats_len
;
1057 unsigned char *ecpointformats
;
1058 # endif /* OPENSSL_NO_EC */
1060 size_t supportedgroups_len
;
1061 uint16_t *supportedgroups
;
1064 * ALPN information (we are in the process of transitioning from NPN to
1069 * For a server, this contains a callback function that allows the
1070 * server to select the protocol for the connection.
1071 * out: on successful return, this must point to the raw protocol
1072 * name (without the length prefix).
1073 * outlen: on successful return, this contains the length of |*out|.
1074 * in: points to the client's list of supported protocols in
1076 * inlen: the length of |in|.
1078 int (*alpn_select_cb
) (SSL
*s
,
1079 const unsigned char **out
,
1080 unsigned char *outlen
,
1081 const unsigned char *in
,
1082 unsigned int inlen
, void *arg
);
1083 void *alpn_select_cb_arg
;
1086 * For a client, this contains the list of supported protocols in wire
1089 unsigned char *alpn
;
1092 # ifndef OPENSSL_NO_NEXTPROTONEG
1093 /* Next protocol negotiation information */
1096 * For a server, this contains a callback function by which the set of
1097 * advertised protocols can be provided.
1099 SSL_CTX_npn_advertised_cb_func npn_advertised_cb
;
1100 void *npn_advertised_cb_arg
;
1102 * For a client, this contains a callback function that selects the next
1103 * protocol from the list provided by the server.
1105 SSL_CTX_npn_select_cb_func npn_select_cb
;
1106 void *npn_select_cb_arg
;
1109 unsigned char cookie_hmac_key
[SHA256_DIGEST_LENGTH
];
1112 # ifndef OPENSSL_NO_PSK
1113 SSL_psk_client_cb_func psk_client_callback
;
1114 SSL_psk_server_cb_func psk_server_callback
;
1116 SSL_psk_find_session_cb_func psk_find_session_cb
;
1117 SSL_psk_use_session_cb_func psk_use_session_cb
;
1119 # ifndef OPENSSL_NO_SRP
1120 SRP_CTX srp_ctx
; /* ctx for SRP authentication */
1123 /* Shared DANE context */
1124 struct dane_ctx_st dane
;
1126 # ifndef OPENSSL_NO_SRTP
1127 /* SRTP profiles we are willing to do from RFC 5764 */
1128 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1131 * Callback for disabling session caching and ticket support on a session
1132 * basis, depending on the chosen cipher.
1134 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1136 CRYPTO_RWLOCK
*lock
;
1139 * Callback for logging key material for use with debugging tools like
1140 * Wireshark. The callback should log `line` followed by a newline.
1142 SSL_CTX_keylog_cb_func keylog_callback
;
1145 * The maximum number of bytes advertised in session tickets that can be
1146 * sent as early data.
1148 uint32_t max_early_data
;
1151 * The maximum number of bytes of early data that a server will tolerate
1152 * (which should be at least as much as max_early_data).
1154 uint32_t recv_max_early_data
;
1156 /* TLS1.3 padding callback */
1157 size_t (*record_padding_cb
)(SSL
*s
, int type
, size_t len
, void *arg
);
1158 void *record_padding_arg
;
1159 size_t block_padding
;
1161 /* Session ticket appdata */
1162 SSL_CTX_generate_session_ticket_fn generate_ticket_cb
;
1163 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb
;
1164 void *ticket_cb_data
;
1166 /* The number of TLS1.3 tickets to automatically send */
1169 /* Callback to determine if early_data is acceptable or not */
1170 SSL_allow_early_data_cb_fn allow_early_data_cb
;
1171 void *allow_early_data_cb_data
;
1173 /* Do we advertise Post-handshake auth support? */
1176 /* Callback for SSL async handling */
1177 SSL_async_callback_fn async_cb
;
1182 const EVP_CIPHER
*ssl_cipher_methods
[SSL_ENC_NUM_IDX
];
1183 const EVP_MD
*ssl_digest_methods
[SSL_MD_NUM_IDX
];
1184 size_t ssl_mac_secret_size
[SSL_MD_NUM_IDX
];
1186 /* Cache of all sigalgs we know and whether they are available or not */
1187 struct sigalg_lookup_st
*sigalg_lookup_cache
;
1189 TLS_GROUP_INFO
*group_list
;
1190 size_t group_list_len
;
1191 size_t group_list_max_len
;
1193 /* masks of disabled algorithms */
1194 uint32_t disabled_enc_mask
;
1195 uint32_t disabled_mac_mask
;
1196 uint32_t disabled_mkey_mask
;
1197 uint32_t disabled_auth_mask
;
1200 typedef struct cert_pkey_st CERT_PKEY
;
1204 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1209 const SSL_METHOD
*method
;
1211 * There are 2 BIO's even though they are normally both the same. This
1212 * is so data can be read and written to different handlers
1214 /* used by SSL_read */
1216 /* used by SSL_write */
1218 /* used during session-id reuse to concatenate messages */
1221 * This holds a variable that indicates what we were doing when a 0 or -1
1222 * is returned. This is needed for non-blocking IO so we know what
1223 * request needs re-doing when in SSL_accept or SSL_connect
1226 int (*handshake_func
) (SSL
*);
1228 * Imagine that here's a boolean member "init" that is switched as soon
1229 * as SSL_set_{accept/connect}_state is called for the first time, so
1230 * that "state" and "handshake_func" are properly initialized. But as
1231 * handshake_func is == 0 until then, we use this test instead of an
1234 /* are we the server side? */
1237 * Generate a new session or reuse an old one.
1238 * NB: For servers, the 'new' session may actually be a previously
1239 * cached session or even the previous session unless
1240 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1243 /* don't send shutdown packets */
1245 /* we have shut things down, 0x01 sent, 0x02 for received */
1249 SSL_EARLY_DATA_STATE early_data_state
;
1250 BUF_MEM
*init_buf
; /* buffer used during init */
1251 void *init_msg
; /* pointer to handshake message body, set by
1252 * ssl3_get_message() */
1253 size_t init_num
; /* amount read/written */
1254 size_t init_off
; /* amount read/written */
1258 size_t read_mac_secret_size
;
1259 unsigned char read_mac_secret
[EVP_MAX_MD_SIZE
];
1260 size_t write_mac_secret_size
;
1261 unsigned char write_mac_secret
[EVP_MAX_MD_SIZE
];
1262 unsigned char server_random
[SSL3_RANDOM_SIZE
];
1263 unsigned char client_random
[SSL3_RANDOM_SIZE
];
1264 /* flags for countermeasure against known-IV weakness */
1265 int need_empty_fragments
;
1266 int empty_fragment_done
;
1267 /* used during startup, digest all incoming/outgoing packets */
1268 BIO
*handshake_buffer
;
1270 * When handshake digest is determined, buffer is hashed and
1271 * freed and MD_CTX for the required digest is stored here.
1273 EVP_MD_CTX
*handshake_dgst
;
1275 * Set whenever an expected ChangeCipherSpec message is processed.
1276 * Unset when the peer's Finished message is received.
1277 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1279 int change_cipher_spec
;
1283 * we allow one fatal and one warning alert to be outstanding, send close
1284 * alert via the warning alert
1287 unsigned char send_alert
[2];
1289 * This flag is set when we should renegotiate ASAP, basically when there
1290 * is no more data in the read or write buffers
1293 int total_renegotiations
;
1294 int num_renegotiations
;
1295 int in_read_app_data
;
1297 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1298 unsigned char finish_md
[EVP_MAX_MD_SIZE
* 2];
1299 size_t finish_md_len
;
1300 unsigned char peer_finish_md
[EVP_MAX_MD_SIZE
* 2];
1301 size_t peer_finish_md_len
;
1302 size_t message_size
;
1304 /* used to hold the new cipher we are going to use */
1305 const SSL_CIPHER
*new_cipher
;
1306 EVP_PKEY
*pkey
; /* holds short lived key exchange key */
1307 /* used for certificate requests */
1309 /* Certificate types in certificate request message. */
1312 /* Certificate authorities list peer sent */
1313 STACK_OF(X509_NAME
) *peer_ca_names
;
1314 size_t key_block_length
;
1315 unsigned char *key_block
;
1316 const EVP_CIPHER
*new_sym_enc
;
1317 const EVP_MD
*new_hash
;
1318 int new_mac_pkey_type
;
1319 size_t new_mac_secret_size
;
1320 # ifndef OPENSSL_NO_COMP
1321 const SSL_COMP
*new_compression
;
1323 char *new_compression
;
1326 /* Raw values of the cipher list from a client */
1327 unsigned char *ciphers_raw
;
1328 size_t ciphers_rawlen
;
1329 /* Temporary storage for premaster secret */
1332 # ifndef OPENSSL_NO_PSK
1333 /* Temporary storage for PSK key */
1337 /* Signature algorithm we actually use */
1338 const struct sigalg_lookup_st
*sigalg
;
1339 /* Pointer to certificate we use */
1342 * signature algorithms peer reports: e.g. supported signature
1343 * algorithms extension for server or as part of a certificate
1344 * request for client.
1345 * Keep track of the algorithms for TLS and X.509 usage separately.
1347 uint16_t *peer_sigalgs
;
1348 uint16_t *peer_cert_sigalgs
;
1349 /* Size of above arrays */
1350 size_t peer_sigalgslen
;
1351 size_t peer_cert_sigalgslen
;
1352 /* Sigalg peer actually uses */
1353 const struct sigalg_lookup_st
*peer_sigalg
;
1355 * Set if corresponding CERT_PKEY can be used with current
1356 * SSL session: e.g. appropriate curve, signature algorithms etc.
1357 * If zero it can't be used at all.
1359 uint32_t valid_flags
[SSL_PKEY_NUM
];
1361 * For servers the following masks are for the key and auth algorithms
1362 * that are supported by the certs below. For clients they are masks of
1363 * *disabled* algorithms based on the current session.
1368 * The following are used by the client to see if a cipher is allowed or
1369 * not. It contains the minimum and maximum version the client's using
1370 * based on what it knows so far.
1376 /* Connection binding to prevent renegotiation attacks */
1377 unsigned char previous_client_finished
[EVP_MAX_MD_SIZE
];
1378 size_t previous_client_finished_len
;
1379 unsigned char previous_server_finished
[EVP_MAX_MD_SIZE
];
1380 size_t previous_server_finished_len
;
1381 int send_connection_binding
; /* TODOEKR */
1383 # ifndef OPENSSL_NO_NEXTPROTONEG
1385 * Set if we saw the Next Protocol Negotiation extension from our peer.
1391 * ALPN information (we are in the process of transitioning from NPN to
1396 * In a server these point to the selected ALPN protocol after the
1397 * ClientHello has been processed. In a client these contain the protocol
1398 * that the server selected once the ServerHello has been processed.
1400 unsigned char *alpn_selected
;
1401 size_t alpn_selected_len
;
1402 /* used by the server to know what options were proposed */
1403 unsigned char *alpn_proposed
;
1404 size_t alpn_proposed_len
;
1405 /* used by the client to know if it actually sent alpn */
1408 # ifndef OPENSSL_NO_EC
1410 * This is set to true if we believe that this is a version of Safari
1411 * running on OS X 10.6 or newer. We wish to know this because Safari on
1412 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1414 char is_probably_safari
;
1415 # endif /* !OPENSSL_NO_EC */
1417 /* For clients: peer temporary key */
1418 /* The group_id for the key exchange key */
1424 struct dtls1_state_st
*d1
; /* DTLSv1 variables */
1425 /* callback that allows applications to peek at protocol messages */
1426 void (*msg_callback
) (int write_p
, int version
, int content_type
,
1427 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
1428 void *msg_callback_arg
;
1429 int hit
; /* reusing a previous session */
1430 X509_VERIFY_PARAM
*param
;
1431 /* Per connection DANE state */
1434 STACK_OF(SSL_CIPHER
) *peer_ciphers
;
1435 STACK_OF(SSL_CIPHER
) *cipher_list
;
1436 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
1437 /* TLSv1.3 specific ciphersuites */
1438 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
;
1440 * These are the ones being used, the ones in SSL_SESSION are the ones to
1441 * be 'copied' into these ones
1445 * The TLS1.3 secrets.
1447 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
1448 unsigned char handshake_secret
[EVP_MAX_MD_SIZE
];
1449 unsigned char master_secret
[EVP_MAX_MD_SIZE
];
1450 unsigned char resumption_master_secret
[EVP_MAX_MD_SIZE
];
1451 unsigned char client_finished_secret
[EVP_MAX_MD_SIZE
];
1452 unsigned char server_finished_secret
[EVP_MAX_MD_SIZE
];
1453 unsigned char server_finished_hash
[EVP_MAX_MD_SIZE
];
1454 unsigned char handshake_traffic_hash
[EVP_MAX_MD_SIZE
];
1455 unsigned char client_app_traffic_secret
[EVP_MAX_MD_SIZE
];
1456 unsigned char server_app_traffic_secret
[EVP_MAX_MD_SIZE
];
1457 unsigned char exporter_master_secret
[EVP_MAX_MD_SIZE
];
1458 unsigned char early_exporter_master_secret
[EVP_MAX_MD_SIZE
];
1459 EVP_CIPHER_CTX
*enc_read_ctx
; /* cryptographic state */
1460 unsigned char read_iv
[EVP_MAX_IV_LENGTH
]; /* TLSv1.3 static read IV */
1461 EVP_MD_CTX
*read_hash
; /* used for mac generation */
1462 COMP_CTX
*compress
; /* compression */
1463 COMP_CTX
*expand
; /* uncompress */
1464 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1465 unsigned char write_iv
[EVP_MAX_IV_LENGTH
]; /* TLSv1.3 static write IV */
1466 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1469 /* This is used to hold the server certificate used */
1470 struct cert_st
/* CERT */ *cert
;
1473 * The hash of all messages prior to the CertificateVerify, and the length
1476 unsigned char cert_verify_hash
[EVP_MAX_MD_SIZE
];
1477 size_t cert_verify_hash_len
;
1479 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1480 enum {SSL_HRR_NONE
= 0, SSL_HRR_PENDING
, SSL_HRR_COMPLETE
}
1481 hello_retry_request
;
1484 * the session_id_context is used to ensure sessions are only reused in
1485 * the appropriate context
1487 size_t sid_ctx_length
;
1488 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
1489 /* This can also be in the session once a session is established */
1490 SSL_SESSION
*session
;
1491 /* TLSv1.3 PSK session */
1492 SSL_SESSION
*psksession
;
1493 unsigned char *psksession_id
;
1494 size_t psksession_id_len
;
1495 /* Default generate session ID callback. */
1496 GEN_SESSION_CB generate_session_id
;
1498 * The temporary TLSv1.3 session id. This isn't really a session id at all
1499 * but is a random value sent in the legacy session id field.
1501 unsigned char tmp_session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
1502 size_t tmp_session_id_len
;
1505 * 0 don't care about verify failure.
1506 * 1 fail if verify fails
1508 uint32_t verify_mode
;
1509 /* fail if callback returns 0 */
1510 int (*verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
1511 /* optional informational callback */
1512 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
1513 /* error bytes to be written */
1517 # ifndef OPENSSL_NO_PSK
1518 SSL_psk_client_cb_func psk_client_callback
;
1519 SSL_psk_server_cb_func psk_server_callback
;
1521 SSL_psk_find_session_cb_func psk_find_session_cb
;
1522 SSL_psk_use_session_cb_func psk_use_session_cb
;
1525 /* Verified chain of peer */
1526 STACK_OF(X509
) *verified_chain
;
1528 /* extra application data */
1529 CRYPTO_EX_DATA ex_data
;
1531 * What we put in certificate_authorities extension for TLS 1.3
1532 * (ClientHello and CertificateRequest) or just client cert requests for
1533 * earlier versions. If client_ca_names is populated then it is only used
1534 * for client cert requests, and in preference to ca_names.
1536 STACK_OF(X509_NAME
) *ca_names
;
1537 STACK_OF(X509_NAME
) *client_ca_names
;
1538 CRYPTO_REF_COUNT references
;
1539 /* protocol behaviour */
1543 int min_proto_version
;
1544 int max_proto_version
;
1545 size_t max_cert_list
;
1548 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1549 * secret and SSLv3/TLS (<=1.2) rollback check
1553 * If we're using more than one pipeline how should we divide the data
1554 * up between the pipes?
1556 size_t split_send_fragment
;
1558 * Maximum amount of data to send in one fragment. actual record size can
1559 * be more than this due to padding and MAC overheads.
1561 size_t max_send_fragment
;
1562 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1563 size_t max_pipelines
;
1566 /* Built-in extension flags */
1567 uint8_t extflags
[TLSEXT_IDX_num_builtins
];
1568 /* TLS extension debug callback */
1569 void (*debug_cb
)(SSL
*s
, int client_server
, int type
,
1570 const unsigned char *data
, int len
, void *arg
);
1573 /* certificate status request info */
1574 /* Status type or -1 if no status type */
1576 /* Raw extension data, if seen */
1577 unsigned char *scts
;
1578 /* Length of raw extension data, if seen */
1580 /* Expect OCSP CertificateStatus message */
1581 int status_expected
;
1584 /* OCSP status request only */
1585 STACK_OF(OCSP_RESPID
) *ids
;
1586 X509_EXTENSIONS
*exts
;
1587 /* OCSP response received or to be sent */
1588 unsigned char *resp
;
1592 /* RFC4507 session ticket expected to be received or sent */
1593 int ticket_expected
;
1594 /* TLS 1.3 tickets requested by the application. */
1595 int extra_tickets_expected
;
1596 # ifndef OPENSSL_NO_EC
1597 size_t ecpointformats_len
;
1599 unsigned char *ecpointformats
;
1601 size_t peer_ecpointformats_len
;
1603 unsigned char *peer_ecpointformats
;
1604 # endif /* OPENSSL_NO_EC */
1605 size_t supportedgroups_len
;
1607 uint16_t *supportedgroups
;
1609 size_t peer_supportedgroups_len
;
1611 uint16_t *peer_supportedgroups
;
1613 /* TLS Session Ticket extension override */
1614 TLS_SESSION_TICKET_EXT
*session_ticket
;
1615 /* TLS Session Ticket extension callback */
1616 tls_session_ticket_ext_cb_fn session_ticket_cb
;
1617 void *session_ticket_cb_arg
;
1618 /* TLS pre-shared secret session resumption */
1619 tls_session_secret_cb_fn session_secret_cb
;
1620 void *session_secret_cb_arg
;
1622 * For a client, this contains the list of supported protocols in wire
1625 unsigned char *alpn
;
1628 * Next protocol negotiation. For the client, this is the protocol that
1629 * we sent in NextProtocol and is set when handling ServerHello
1630 * extensions. For a server, this is the client's selected_protocol from
1631 * NextProtocol and is set when handling the NextProtocol message, before
1632 * the Finished message.
1637 /* The available PSK key exchange modes */
1640 /* Set to one if we have negotiated ETM */
1643 /* Are we expecting to receive early data? */
1645 /* Is the session suitable for early data? */
1648 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1649 unsigned char *tls13_cookie
;
1650 size_t tls13_cookie_len
;
1651 /* Have we received a cookie from the client? */
1655 * Maximum Fragment Length as per RFC 4366.
1656 * If this member contains one of the allowed values (1-4)
1657 * then we should include Maximum Fragment Length Negotiation
1658 * extension in Client Hello.
1659 * Please note that value of this member does not have direct
1660 * effect. The actual (binding) value is stored in SSL_SESSION,
1661 * as this extension is optional on server side.
1663 uint8_t max_fragment_len_mode
;
1666 * On the client side the number of ticket identities we sent in the
1667 * ClientHello. On the server side the identity of the ticket we
1674 * Parsed form of the ClientHello, kept around across client_hello_cb
1677 CLIENTHELLO_MSG
*clienthello
;
1680 * no further mod of servername
1681 * 0 : call the servername extension callback.
1682 * 1 : prepare 2, allow last ack just after in server callback.
1683 * 2 : don't call servername callback, no ack in server hello
1685 int servername_done
;
1686 # ifndef OPENSSL_NO_CT
1688 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1689 * If they are not, the connection should be aborted.
1691 ssl_ct_validation_cb ct_validation_callback
;
1692 /* User-supplied argument that is passed to the ct_validation_callback */
1693 void *ct_validation_callback_arg
;
1695 * Consolidated stack of SCTs from all sources.
1696 * Lazily populated by CT_get_peer_scts(SSL*)
1698 STACK_OF(SCT
) *scts
;
1699 /* Have we attempted to find/parse SCTs yet? */
1702 SSL_CTX
*session_ctx
; /* initial ctx, used to store sessions */
1703 # ifndef OPENSSL_NO_SRTP
1705 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1706 /* What's been chosen */
1707 SRTP_PROTECTION_PROFILE
*srtp_profile
;
1710 * 1 if we are renegotiating.
1711 * 2 if we are a server and are inside a handshake
1712 * (i.e. not just sending a HelloRequest)
1715 /* If sending a KeyUpdate is pending */
1717 /* Post-handshake authentication state */
1718 SSL_PHA_STATE post_handshake_auth
;
1720 uint8_t* pha_context
;
1721 size_t pha_context_len
;
1723 EVP_MD_CTX
*pha_dgst
; /* this is just the digest through ClientFinished */
1725 # ifndef OPENSSL_NO_SRP
1726 /* ctx for SRP authentication */
1730 * Callback for disabling session caching and ticket support on a session
1731 * basis, depending on the chosen cipher.
1733 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1734 RECORD_LAYER rlayer
;
1735 /* Default password callback. */
1736 pem_password_cb
*default_passwd_callback
;
1737 /* Default password callback user data. */
1738 void *default_passwd_callback_userdata
;
1739 /* Async Job info */
1741 ASYNC_WAIT_CTX
*waitctx
;
1745 * The maximum number of bytes advertised in session tickets that can be
1746 * sent as early data.
1748 uint32_t max_early_data
;
1750 * The maximum number of bytes of early data that a server will tolerate
1751 * (which should be at least as much as max_early_data).
1753 uint32_t recv_max_early_data
;
1756 * The number of bytes of early data received so far. If we accepted early
1757 * data then this is a count of the plaintext bytes. If we rejected it then
1758 * this is a count of the ciphertext bytes.
1760 uint32_t early_data_count
;
1762 /* TLS1.3 padding callback */
1763 size_t (*record_padding_cb
)(SSL
*s
, int type
, size_t len
, void *arg
);
1764 void *record_padding_arg
;
1765 size_t block_padding
;
1767 CRYPTO_RWLOCK
*lock
;
1769 /* The number of TLS1.3 tickets to automatically send */
1771 /* The number of TLS1.3 tickets actually sent so far */
1772 size_t sent_tickets
;
1773 /* The next nonce value to use when we send a ticket on this connection */
1774 uint64_t next_ticket_nonce
;
1776 /* Callback to determine if early_data is acceptable or not */
1777 SSL_allow_early_data_cb_fn allow_early_data_cb
;
1778 void *allow_early_data_cb_data
;
1780 /* Callback for SSL async handling */
1781 SSL_async_callback_fn async_cb
;
1785 * Signature algorithms shared by client and server: cached because these
1786 * are used most often.
1788 const struct sigalg_lookup_st
**shared_sigalgs
;
1789 size_t shared_sigalgslen
;
1793 * Structure containing table entry of values associated with the signature
1794 * algorithms (signature scheme) extension
1796 typedef struct sigalg_lookup_st
{
1797 /* TLS 1.3 signature scheme name */
1799 /* Raw value used in extension */
1801 /* NID of hash algorithm or NID_undef if no hash */
1803 /* Index of hash algorithm or -1 if no hash algorithm */
1805 /* NID of signature algorithm */
1807 /* Index of signature algorithm */
1809 /* Combined hash and signature NID, if any */
1811 /* Required public key curve (ECDSA only) */
1813 /* Whether this signature algorithm is actually available for use */
1818 * Structure containing table entry of certificate info corresponding to
1822 int nid
; /* NID of public key algorithm */
1823 uint32_t amask
; /* authmask corresponding to key type */
1826 /* DTLS structures */
1828 # ifndef OPENSSL_NO_SCTP
1829 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1832 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1833 # define DTLS1_MAX_MTU_OVERHEAD 48
1836 * Flag used in message reuse to indicate the buffer contains the record
1837 * header as well as the handshake message header.
1839 # define DTLS1_SKIP_RECORD_HEADER 2
1841 struct dtls1_retransmit_state
{
1842 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1843 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1844 COMP_CTX
*compress
; /* compression */
1845 SSL_SESSION
*session
;
1846 unsigned short epoch
;
1849 struct hm_header_st
{
1855 unsigned int is_ccs
;
1856 struct dtls1_retransmit_state saved_retransmit_state
;
1859 struct dtls1_timeout_st
{
1860 /* Number of read timeouts so far */
1861 unsigned int read_timeouts
;
1862 /* Number of write timeouts so far */
1863 unsigned int write_timeouts
;
1864 /* Number of alerts received so far */
1865 unsigned int num_alerts
;
1868 typedef struct hm_fragment_st
{
1869 struct hm_header_st msg_header
;
1870 unsigned char *fragment
;
1871 unsigned char *reassembly
;
1874 typedef struct pqueue_st pqueue
;
1875 typedef struct pitem_st pitem
;
1878 unsigned char priority
[8]; /* 64-bit value in big-endian encoding */
1883 typedef struct pitem_st
*piterator
;
1885 pitem
*pitem_new(unsigned char *prio64be
, void *data
);
1886 void pitem_free(pitem
*item
);
1887 pqueue
*pqueue_new(void);
1888 void pqueue_free(pqueue
*pq
);
1889 pitem
*pqueue_insert(pqueue
*pq
, pitem
*item
);
1890 pitem
*pqueue_peek(pqueue
*pq
);
1891 pitem
*pqueue_pop(pqueue
*pq
);
1892 pitem
*pqueue_find(pqueue
*pq
, unsigned char *prio64be
);
1893 pitem
*pqueue_iterator(pqueue
*pq
);
1894 pitem
*pqueue_next(piterator
*iter
);
1895 size_t pqueue_size(pqueue
*pq
);
1897 typedef struct dtls1_state_st
{
1898 unsigned char cookie
[DTLS1_COOKIE_LENGTH
];
1900 unsigned int cookie_verified
;
1901 /* handshake message numbers */
1902 unsigned short handshake_write_seq
;
1903 unsigned short next_handshake_write_seq
;
1904 unsigned short handshake_read_seq
;
1905 /* Buffered handshake messages */
1906 pqueue
*buffered_messages
;
1907 /* Buffered (sent) handshake records */
1908 pqueue
*sent_messages
;
1909 size_t link_mtu
; /* max on-the-wire DTLS packet size */
1910 size_t mtu
; /* max DTLS packet size */
1911 struct hm_header_st w_msg_hdr
;
1912 struct hm_header_st r_msg_hdr
;
1913 struct dtls1_timeout_st timeout
;
1915 * Indicates when the last handshake msg sent will timeout
1917 struct timeval next_timeout
;
1918 /* Timeout duration */
1919 unsigned int timeout_duration_us
;
1921 unsigned int retransmitting
;
1922 # ifndef OPENSSL_NO_SCTP
1923 int shutdown_received
;
1926 DTLS_timer_cb timer_cb
;
1930 # ifndef OPENSSL_NO_EC
1932 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1934 # define EXPLICIT_PRIME_CURVE_TYPE 1
1935 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1936 # define NAMED_CURVE_TYPE 3
1937 # endif /* OPENSSL_NO_EC */
1939 struct cert_pkey_st
{
1941 EVP_PKEY
*privatekey
;
1942 /* Chain for this certificate */
1943 STACK_OF(X509
) *chain
;
1945 * serverinfo data for this certificate. The data is in TLS Extension
1946 * wire format, specifically it's a series of records like:
1947 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1949 * uint8_t data[length];
1951 unsigned char *serverinfo
;
1952 size_t serverinfo_length
;
1954 /* Retrieve Suite B flags */
1955 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1956 /* Uses to check strict mode: suite B modes are always strict */
1957 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1958 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1961 ENDPOINT_CLIENT
= 0,
1968 unsigned short ext_type
;
1970 /* The context which this extension applies to */
1971 unsigned int context
;
1973 * Per-connection flags relating to this extension type: not used if
1974 * part of an SSL_CTX structure.
1977 SSL_custom_ext_add_cb_ex add_cb
;
1978 SSL_custom_ext_free_cb_ex free_cb
;
1980 SSL_custom_ext_parse_cb_ex parse_cb
;
1982 } custom_ext_method
;
1984 /* ext_flags values */
1987 * Indicates an extension has been received. Used to check for unsolicited or
1988 * duplicate extensions.
1990 # define SSL_EXT_FLAG_RECEIVED 0x1
1992 * Indicates an extension has been sent: used to enable sending of
1993 * corresponding ServerHello extension.
1995 # define SSL_EXT_FLAG_SENT 0x2
1998 custom_ext_method
*meths
;
2000 } custom_ext_methods
;
2002 typedef struct cert_st
{
2003 /* Current active set */
2005 * ALWAYS points to an element of the pkeys array
2006 * Probably it would make more sense to store
2007 * an index, not a pointer.
2012 #ifndef OPENSSL_NO_DH
2013 DH
*(*dh_tmp_cb
) (SSL
*ssl
, int is_export
, int keysize
);
2016 /* Flags related to certificates */
2017 uint32_t cert_flags
;
2018 CERT_PKEY pkeys
[SSL_PKEY_NUM
];
2019 /* Custom certificate types sent in certificate request message. */
2023 * supported signature algorithms. When set on a client this is sent in
2024 * the client hello as the supported signature algorithms extension. For
2025 * servers it represents the signature algorithms we are willing to use.
2027 uint16_t *conf_sigalgs
;
2028 /* Size of above array */
2029 size_t conf_sigalgslen
;
2031 * Client authentication signature algorithms, if not set then uses
2032 * conf_sigalgs. On servers these will be the signature algorithms sent
2033 * to the client in a certificate request for TLS 1.2. On a client this
2034 * represents the signature algorithms we are willing to use for client
2037 uint16_t *client_sigalgs
;
2038 /* Size of above array */
2039 size_t client_sigalgslen
;
2041 * Certificate setup callback: if set is called whenever a certificate
2042 * may be required (client or server). the callback can then examine any
2043 * appropriate parameters and setup any certificates required. This
2044 * allows advanced applications to select certificates on the fly: for
2045 * example based on supported signature algorithms or curves.
2047 int (*cert_cb
) (SSL
*ssl
, void *arg
);
2050 * Optional X509_STORE for chain building or certificate validation If
2051 * NULL the parent SSL_CTX store is used instead.
2053 X509_STORE
*chain_store
;
2054 X509_STORE
*verify_store
;
2055 /* Custom extensions */
2056 custom_ext_methods custext
;
2057 /* Security callback */
2058 int (*sec_cb
) (const SSL
*s
, const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
2059 void *other
, void *ex
);
2060 /* Security level */
2063 # ifndef OPENSSL_NO_PSK
2064 /* If not NULL psk identity hint to use for servers */
2065 char *psk_identity_hint
;
2067 CRYPTO_REF_COUNT references
; /* >1 only if SSL_copy_session_id is used */
2068 CRYPTO_RWLOCK
*lock
;
2071 # define FP_ICC (int (*)(const void *,const void *))
2074 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
2075 * of a mess of functions, but hell, think of it as an opaque structure :-)
2077 typedef struct ssl3_enc_method
{
2078 int (*enc
) (SSL
*, SSL3_RECORD
*, size_t, int, SSL_MAC_BUF
*, size_t);
2079 int (*mac
) (SSL
*, SSL3_RECORD
*, unsigned char *, int);
2080 int (*setup_key_block
) (SSL
*);
2081 int (*generate_master_secret
) (SSL
*, unsigned char *, unsigned char *,
2083 int (*change_cipher_state
) (SSL
*, int);
2084 size_t (*final_finish_mac
) (SSL
*, const char *, size_t, unsigned char *);
2085 const char *client_finished_label
;
2086 size_t client_finished_label_len
;
2087 const char *server_finished_label
;
2088 size_t server_finished_label_len
;
2089 int (*alert_value
) (int);
2090 int (*export_keying_material
) (SSL
*, unsigned char *, size_t,
2091 const char *, size_t,
2092 const unsigned char *, size_t,
2094 /* Various flags indicating protocol version requirements */
2096 /* Set the handshake header */
2097 int (*set_handshake_header
) (SSL
*s
, WPACKET
*pkt
, int type
);
2098 /* Close construction of the handshake message */
2099 int (*close_construct_packet
) (SSL
*s
, WPACKET
*pkt
, int htype
);
2100 /* Write out handshake message */
2101 int (*do_write
) (SSL
*s
);
2104 # define ssl_set_handshake_header(s, pkt, htype) \
2105 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
2106 # define ssl_close_construct_packet(s, pkt, htype) \
2107 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
2108 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
2110 /* Values for enc_flags */
2112 /* Uses explicit IV for CBC mode */
2113 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
2114 /* Uses signature algorithms extension */
2115 # define SSL_ENC_FLAG_SIGALGS 0x2
2116 /* Uses SHA256 default PRF */
2117 # define SSL_ENC_FLAG_SHA256_PRF 0x4
2119 # define SSL_ENC_FLAG_DTLS 0x8
2121 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
2122 * apply to others in future.
2124 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
2126 # ifndef OPENSSL_NO_COMP
2127 /* Used for holding the relevant compression methods loaded into SSL_CTX */
2128 typedef struct ssl3_comp_st
{
2129 int comp_id
; /* The identifier byte for this compression
2131 char *name
; /* Text name used for the compression type */
2132 COMP_METHOD
*method
; /* The method :-) */
2136 typedef enum downgrade_en
{
2143 * Dummy status type for the status_type extension. Indicates no status type
2146 #define TLSEXT_STATUSTYPE_nothing -1
2148 /* Sigalgs values */
2149 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2150 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2151 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2152 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2153 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2154 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2155 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2156 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2157 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2158 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2159 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2160 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2161 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2162 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2163 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2164 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2165 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2166 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2167 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2168 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2169 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2170 #define TLSEXT_SIGALG_gostr34102012_256_intrinsic 0x0840
2171 #define TLSEXT_SIGALG_gostr34102012_512_intrinsic 0x0841
2172 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2173 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2174 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2176 #define TLSEXT_SIGALG_ed25519 0x0807
2177 #define TLSEXT_SIGALG_ed448 0x0808
2179 /* Known PSK key exchange modes */
2180 #define TLSEXT_KEX_MODE_KE 0x00
2181 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2184 * Internal representations of key exchange modes
2186 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2187 #define TLSEXT_KEX_MODE_FLAG_KE 1
2188 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2190 #define SSL_USE_PSS(s) (s->s3.tmp.peer_sigalg != NULL && \
2191 s->s3.tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2193 /* A dummy signature value not valid for TLSv1.2 signature algs */
2194 #define TLSEXT_signature_rsa_pss 0x0101
2196 /* TLSv1.3 downgrade protection sentinel values */
2197 extern const unsigned char tls11downgrade
[8];
2198 extern const unsigned char tls12downgrade
[8];
2200 extern SSL3_ENC_METHOD ssl3_undef_enc_method
;
2202 __owur
const SSL_METHOD
*ssl_bad_method(int ver
);
2203 __owur
const SSL_METHOD
*sslv3_method(void);
2204 __owur
const SSL_METHOD
*sslv3_server_method(void);
2205 __owur
const SSL_METHOD
*sslv3_client_method(void);
2206 __owur
const SSL_METHOD
*tlsv1_method(void);
2207 __owur
const SSL_METHOD
*tlsv1_server_method(void);
2208 __owur
const SSL_METHOD
*tlsv1_client_method(void);
2209 __owur
const SSL_METHOD
*tlsv1_1_method(void);
2210 __owur
const SSL_METHOD
*tlsv1_1_server_method(void);
2211 __owur
const SSL_METHOD
*tlsv1_1_client_method(void);
2212 __owur
const SSL_METHOD
*tlsv1_2_method(void);
2213 __owur
const SSL_METHOD
*tlsv1_2_server_method(void);
2214 __owur
const SSL_METHOD
*tlsv1_2_client_method(void);
2215 __owur
const SSL_METHOD
*tlsv1_3_method(void);
2216 __owur
const SSL_METHOD
*tlsv1_3_server_method(void);
2217 __owur
const SSL_METHOD
*tlsv1_3_client_method(void);
2218 __owur
const SSL_METHOD
*dtlsv1_method(void);
2219 __owur
const SSL_METHOD
*dtlsv1_server_method(void);
2220 __owur
const SSL_METHOD
*dtlsv1_client_method(void);
2221 __owur
const SSL_METHOD
*dtls_bad_ver_client_method(void);
2222 __owur
const SSL_METHOD
*dtlsv1_2_method(void);
2223 __owur
const SSL_METHOD
*dtlsv1_2_server_method(void);
2224 __owur
const SSL_METHOD
*dtlsv1_2_client_method(void);
2226 extern const SSL3_ENC_METHOD TLSv1_enc_data
;
2227 extern const SSL3_ENC_METHOD TLSv1_1_enc_data
;
2228 extern const SSL3_ENC_METHOD TLSv1_2_enc_data
;
2229 extern const SSL3_ENC_METHOD TLSv1_3_enc_data
;
2230 extern const SSL3_ENC_METHOD SSLv3_enc_data
;
2231 extern const SSL3_ENC_METHOD DTLSv1_enc_data
;
2232 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data
;
2235 * Flags for SSL methods
2237 # define SSL_METHOD_NO_FIPS (1U<<0)
2238 # define SSL_METHOD_NO_SUITEB (1U<<1)
2240 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2241 s_connect, enc_data) \
2242 const SSL_METHOD *func_name(void) \
2244 static const SSL_METHOD func_name##_data= { \
2258 ssl3_renegotiate_check, \
2261 ssl3_dispatch_alert, \
2264 ssl3_get_cipher_by_char, \
2265 ssl3_put_cipher_by_char, \
2269 tls1_default_timeout, \
2271 ssl_undefined_void_function, \
2272 ssl3_callback_ctrl, \
2273 ssl3_ctx_callback_ctrl, \
2275 return &func_name##_data; \
2278 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2279 const SSL_METHOD *func_name(void) \
2281 static const SSL_METHOD func_name##_data= { \
2283 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2295 ssl3_renegotiate_check, \
2298 ssl3_dispatch_alert, \
2301 ssl3_get_cipher_by_char, \
2302 ssl3_put_cipher_by_char, \
2306 ssl3_default_timeout, \
2308 ssl_undefined_void_function, \
2309 ssl3_callback_ctrl, \
2310 ssl3_ctx_callback_ctrl, \
2312 return &func_name##_data; \
2315 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2316 s_connect, enc_data) \
2317 const SSL_METHOD *func_name(void) \
2319 static const SSL_METHOD func_name##_data= { \
2333 ssl3_renegotiate_check, \
2335 dtls1_write_app_data_bytes, \
2336 dtls1_dispatch_alert, \
2339 ssl3_get_cipher_by_char, \
2340 ssl3_put_cipher_by_char, \
2344 dtls1_default_timeout, \
2346 ssl_undefined_void_function, \
2347 ssl3_callback_ctrl, \
2348 ssl3_ctx_callback_ctrl, \
2350 return &func_name##_data; \
2353 struct openssl_ssl_test_functions
{
2354 int (*p_ssl_init_wbio_buffer
) (SSL
*s
);
2355 int (*p_ssl3_setup_buffers
) (SSL
*s
);
2358 const char *ssl_protocol_to_string(int version
);
2360 /* Returns true if certificate and private key for 'idx' are present */
2361 static ossl_inline
int ssl_has_cert(const SSL
*s
, int idx
)
2363 if (idx
< 0 || idx
>= SSL_PKEY_NUM
)
2365 return s
->cert
->pkeys
[idx
].x509
!= NULL
2366 && s
->cert
->pkeys
[idx
].privatekey
!= NULL
;
2369 static ossl_inline
void tls1_get_peer_groups(SSL
*s
, const uint16_t **pgroups
,
2372 *pgroups
= s
->ext
.peer_supportedgroups
;
2373 *pgroupslen
= s
->ext
.peer_supportedgroups_len
;
2376 # ifndef OPENSSL_UNIT_TEST
2378 __owur
int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
);
2379 __owur
int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
);
2380 void ssl_clear_cipher_ctx(SSL
*s
);
2381 int ssl_clear_bad_session(SSL
*s
);
2382 __owur CERT
*ssl_cert_new(void);
2383 __owur CERT
*ssl_cert_dup(CERT
*cert
);
2384 void ssl_cert_clear_certs(CERT
*c
);
2385 void ssl_cert_free(CERT
*c
);
2386 __owur
int ssl_generate_session_id(SSL
*s
, SSL_SESSION
*ss
);
2387 __owur
int ssl_get_new_session(SSL
*s
, int session
);
2388 __owur SSL_SESSION
*lookup_sess_in_cache(SSL
*s
, const unsigned char *sess_id
,
2389 size_t sess_id_len
);
2390 __owur
int ssl_get_prev_session(SSL
*s
, CLIENTHELLO_MSG
*hello
);
2391 __owur SSL_SESSION
*ssl_session_dup(const SSL_SESSION
*src
, int ticket
);
2392 __owur
int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
);
2393 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
2394 __owur
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2395 const SSL_CIPHER
*const *bp
);
2396 __owur
STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(SSL_CTX
*ctx
,
2397 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
2398 STACK_OF(SSL_CIPHER
) **cipher_list
,
2399 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
2400 const char *rule_str
,
2402 __owur
int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
);
2403 __owur
int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
2404 STACK_OF(SSL_CIPHER
) **skp
,
2405 STACK_OF(SSL_CIPHER
) **scsvs
, int sslv2format
,
2407 void ssl_update_cache(SSL
*s
, int mode
);
2408 __owur
int ssl_cipher_get_evp_cipher(SSL_CTX
*ctx
, const SSL_CIPHER
*sslc
,
2409 const EVP_CIPHER
**enc
);
2410 __owur
int ssl_cipher_get_evp(SSL_CTX
*ctxc
, const SSL_SESSION
*s
,
2411 const EVP_CIPHER
**enc
, const EVP_MD
**md
,
2412 int *mac_pkey_type
, size_t *mac_secret_size
,
2413 SSL_COMP
**comp
, int use_etm
);
2414 __owur
int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2415 size_t *int_overhead
, size_t *blocksize
,
2416 size_t *ext_overhead
);
2417 __owur
int ssl_cert_is_disabled(SSL_CTX
*ctx
, size_t idx
);
2418 __owur
const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
,
2419 const unsigned char *ptr
,
2421 __owur
int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
2422 __owur
int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
2423 __owur
int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
2424 __owur
int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
2425 __owur
int ssl_cert_select_current(CERT
*c
, X509
*x
);
2426 __owur
int ssl_cert_set_current(CERT
*c
, long arg
);
2427 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
);
2429 __owur
int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
);
2430 __owur
int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
);
2431 __owur
int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
,
2434 __owur
int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
);
2435 __owur
int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
2438 __owur
int ssl_cert_lookup_by_nid(int nid
, size_t *pidx
);
2439 __owur
const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_pkey(const EVP_PKEY
*pk
,
2441 __owur
const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_idx(size_t idx
);
2443 int ssl_undefined_function(SSL
*s
);
2444 __owur
int ssl_undefined_void_function(void);
2445 __owur
int ssl_undefined_const_function(const SSL
*s
);
2446 __owur
int ssl_get_server_cert_serverinfo(SSL
*s
,
2447 const unsigned char **serverinfo
,
2448 size_t *serverinfo_length
);
2449 void ssl_set_masks(SSL
*s
);
2450 __owur
STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
);
2451 __owur
int ssl_x509err2alert(int type
);
2452 void ssl_sort_cipher_list(void);
2453 int ssl_load_ciphers(SSL_CTX
*ctx
);
2454 __owur
int ssl_setup_sig_algs(SSL_CTX
*ctx
);
2455 int ssl_load_groups(SSL_CTX
*ctx
);
2456 __owur
int ssl_fill_hello_random(SSL
*s
, int server
, unsigned char *field
,
2457 size_t len
, DOWNGRADE dgrd
);
2458 __owur
int ssl_generate_master_secret(SSL
*s
, unsigned char *pms
, size_t pmslen
,
2460 __owur EVP_PKEY
*ssl_generate_pkey(SSL
*s
, EVP_PKEY
*pm
);
2461 __owur
int ssl_gensecret(SSL
*s
, unsigned char *pms
, size_t pmslen
);
2462 __owur
int ssl_derive(SSL
*s
, EVP_PKEY
*privkey
, EVP_PKEY
*pubkey
,
2464 __owur
int ssl_decapsulate(SSL
*s
, EVP_PKEY
*privkey
,
2465 const unsigned char *ct
, size_t ctlen
,
2467 __owur
int ssl_encapsulate(SSL
*s
, EVP_PKEY
*pubkey
,
2468 unsigned char **ctp
, size_t *ctlenp
,
2470 __owur EVP_PKEY
*ssl_dh_to_pkey(DH
*dh
);
2471 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
);
2472 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
);
2474 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_id(uint32_t id
);
2475 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_std_name(const char *stdname
);
2476 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_char(const unsigned char *p
);
2477 __owur
int ssl3_put_cipher_by_char(const SSL_CIPHER
*c
, WPACKET
*pkt
,
2479 int ssl3_init_finished_mac(SSL
*s
);
2480 __owur
int ssl3_setup_key_block(SSL
*s
);
2481 __owur
int ssl3_change_cipher_state(SSL
*s
, int which
);
2482 void ssl3_cleanup_key_block(SSL
*s
);
2483 __owur
int ssl3_do_write(SSL
*s
, int type
);
2484 int ssl3_send_alert(SSL
*s
, int level
, int desc
);
2485 __owur
int ssl3_generate_master_secret(SSL
*s
, unsigned char *out
,
2486 unsigned char *p
, size_t len
,
2487 size_t *secret_size
);
2488 __owur
int ssl3_get_req_cert_type(SSL
*s
, WPACKET
*pkt
);
2489 __owur
int ssl3_num_ciphers(void);
2490 __owur
const SSL_CIPHER
*ssl3_get_cipher(unsigned int u
);
2491 int ssl3_renegotiate(SSL
*ssl
);
2492 int ssl3_renegotiate_check(SSL
*ssl
, int initok
);
2493 void ssl3_digest_master_key_set_params(const SSL_SESSION
*session
,
2494 OSSL_PARAM params
[]);
2495 __owur
int ssl3_dispatch_alert(SSL
*s
);
2496 __owur
size_t ssl3_final_finish_mac(SSL
*s
, const char *sender
, size_t slen
,
2498 __owur
int ssl3_finish_mac(SSL
*s
, const unsigned char *buf
, size_t len
);
2499 void ssl3_free_digest_list(SSL
*s
);
2500 __owur
unsigned long ssl3_output_cert_chain(SSL
*s
, WPACKET
*pkt
,
2502 __owur
const SSL_CIPHER
*ssl3_choose_cipher(SSL
*ssl
,
2503 STACK_OF(SSL_CIPHER
) *clnt
,
2504 STACK_OF(SSL_CIPHER
) *srvr
);
2505 __owur
int ssl3_digest_cached_records(SSL
*s
, int keep
);
2506 __owur
int ssl3_new(SSL
*s
);
2507 void ssl3_free(SSL
*s
);
2508 __owur
int ssl3_read(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
2509 __owur
int ssl3_peek(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
2510 __owur
int ssl3_write(SSL
*s
, const void *buf
, size_t len
, size_t *written
);
2511 __owur
int ssl3_shutdown(SSL
*s
);
2512 int ssl3_clear(SSL
*s
);
2513 __owur
long ssl3_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
2514 __owur
long ssl3_ctx_ctrl(SSL_CTX
*s
, int cmd
, long larg
, void *parg
);
2515 __owur
long ssl3_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void));
2516 __owur
long ssl3_ctx_callback_ctrl(SSL_CTX
*s
, int cmd
, void (*fp
) (void));
2518 __owur
int ssl3_do_change_cipher_spec(SSL
*ssl
);
2519 __owur
long ssl3_default_timeout(void);
2521 __owur
int ssl3_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
2522 __owur
int tls_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
2523 __owur
int tls_setup_handshake(SSL
*s
);
2524 __owur
int dtls1_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
2525 __owur
int dtls1_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
2526 __owur
int ssl3_handshake_write(SSL
*s
);
2528 __owur
int ssl_allow_compression(SSL
*s
);
2530 __owur
int ssl_version_supported(const SSL
*s
, int version
,
2531 const SSL_METHOD
**meth
);
2533 __owur
int ssl_set_client_hello_version(SSL
*s
);
2534 __owur
int ssl_check_version_downgrade(SSL
*s
);
2535 __owur
int ssl_set_version_bound(int method_version
, int version
, int *bound
);
2536 __owur
int ssl_choose_server_version(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2538 __owur
int ssl_choose_client_version(SSL
*s
, int version
,
2539 RAW_EXTENSION
*extensions
);
2540 __owur
int ssl_get_min_max_version(const SSL
*s
, int *min_version
,
2541 int *max_version
, int *real_max
);
2543 __owur
long tls1_default_timeout(void);
2544 __owur
int dtls1_do_write(SSL
*s
, int type
);
2545 void dtls1_set_message_header(SSL
*s
,
2548 size_t frag_off
, size_t frag_len
);
2550 int dtls1_write_app_data_bytes(SSL
*s
, int type
, const void *buf_
, size_t len
,
2553 __owur
int dtls1_read_failed(SSL
*s
, int code
);
2554 __owur
int dtls1_buffer_message(SSL
*s
, int ccs
);
2555 __owur
int dtls1_retransmit_message(SSL
*s
, unsigned short seq
, int *found
);
2556 __owur
int dtls1_get_queue_priority(unsigned short seq
, int is_ccs
);
2557 int dtls1_retransmit_buffered_messages(SSL
*s
);
2558 void dtls1_clear_received_buffer(SSL
*s
);
2559 void dtls1_clear_sent_buffer(SSL
*s
);
2560 void dtls1_get_message_header(unsigned char *data
,
2561 struct hm_header_st
*msg_hdr
);
2562 __owur
long dtls1_default_timeout(void);
2563 __owur
struct timeval
*dtls1_get_timeout(SSL
*s
, struct timeval
*timeleft
);
2564 __owur
int dtls1_check_timeout_num(SSL
*s
);
2565 __owur
int dtls1_handle_timeout(SSL
*s
);
2566 void dtls1_start_timer(SSL
*s
);
2567 void dtls1_stop_timer(SSL
*s
);
2568 __owur
int dtls1_is_timer_expired(SSL
*s
);
2569 void dtls1_double_timeout(SSL
*s
);
2570 __owur
int dtls_raw_hello_verify_request(WPACKET
*pkt
, unsigned char *cookie
,
2572 __owur
size_t dtls1_min_mtu(SSL
*s
);
2573 void dtls1_hm_fragment_free(hm_fragment
*frag
);
2574 __owur
int dtls1_query_mtu(SSL
*s
);
2576 __owur
int tls1_new(SSL
*s
);
2577 void tls1_free(SSL
*s
);
2578 int tls1_clear(SSL
*s
);
2580 __owur
int dtls1_new(SSL
*s
);
2581 void dtls1_free(SSL
*s
);
2582 int dtls1_clear(SSL
*s
);
2583 long dtls1_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
2584 __owur
int dtls1_shutdown(SSL
*s
);
2586 __owur
int dtls1_dispatch_alert(SSL
*s
);
2588 __owur
int ssl_init_wbio_buffer(SSL
*s
);
2589 int ssl_free_wbio_buffer(SSL
*s
);
2591 __owur
int tls1_change_cipher_state(SSL
*s
, int which
);
2592 __owur
int tls1_setup_key_block(SSL
*s
);
2593 __owur
size_t tls1_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2595 __owur
int tls1_generate_master_secret(SSL
*s
, unsigned char *out
,
2596 unsigned char *p
, size_t len
,
2597 size_t *secret_size
);
2598 __owur
int tls13_setup_key_block(SSL
*s
);
2599 __owur
size_t tls13_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2601 __owur
int tls13_change_cipher_state(SSL
*s
, int which
);
2602 __owur
int tls13_update_key(SSL
*s
, int send
);
2603 __owur
int tls13_hkdf_expand(SSL
*s
, const EVP_MD
*md
,
2604 const unsigned char *secret
,
2605 const unsigned char *label
, size_t labellen
,
2606 const unsigned char *data
, size_t datalen
,
2607 unsigned char *out
, size_t outlen
, int fatal
);
2608 __owur
int tls13_derive_key(SSL
*s
, const EVP_MD
*md
,
2609 const unsigned char *secret
, unsigned char *key
,
2611 __owur
int tls13_derive_iv(SSL
*s
, const EVP_MD
*md
,
2612 const unsigned char *secret
, unsigned char *iv
,
2614 __owur
int tls13_derive_finishedkey(SSL
*s
, const EVP_MD
*md
,
2615 const unsigned char *secret
,
2616 unsigned char *fin
, size_t finlen
);
2617 int tls13_generate_secret(SSL
*s
, const EVP_MD
*md
,
2618 const unsigned char *prevsecret
,
2619 const unsigned char *insecret
,
2621 unsigned char *outsecret
);
2622 __owur
int tls13_generate_handshake_secret(SSL
*s
,
2623 const unsigned char *insecret
,
2624 size_t insecretlen
);
2625 __owur
int tls13_generate_master_secret(SSL
*s
, unsigned char *out
,
2626 unsigned char *prev
, size_t prevlen
,
2627 size_t *secret_size
);
2628 __owur
int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2629 const char *label
, size_t llen
,
2630 const unsigned char *p
, size_t plen
,
2632 __owur
int tls13_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2633 const char *label
, size_t llen
,
2634 const unsigned char *context
,
2635 size_t contextlen
, int use_context
);
2636 __owur
int tls13_export_keying_material_early(SSL
*s
, unsigned char *out
,
2637 size_t olen
, const char *label
,
2639 const unsigned char *context
,
2641 __owur
int tls1_alert_code(int code
);
2642 __owur
int tls13_alert_code(int code
);
2643 __owur
int ssl3_alert_code(int code
);
2645 # ifndef OPENSSL_NO_EC
2646 __owur
int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
);
2649 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
);
2651 __owur
const TLS_GROUP_INFO
*tls1_group_id_lookup(SSL_CTX
*ctx
, uint16_t curve_id
);
2652 __owur
int tls1_group_id2nid(uint16_t group_id
, int include_unknown
);
2653 __owur
int tls1_check_group_id(SSL
*s
, uint16_t group_id
, int check_own_curves
);
2654 __owur
uint16_t tls1_shared_group(SSL
*s
, int nmatch
);
2655 __owur
int tls1_set_groups(uint16_t **pext
, size_t *pextlen
,
2656 int *curves
, size_t ncurves
);
2657 __owur
int tls1_set_groups_list(SSL_CTX
*ctx
, uint16_t **pext
, size_t *pextlen
,
2659 __owur EVP_PKEY
*ssl_generate_pkey_group(SSL
*s
, uint16_t id
);
2660 __owur
int tls_valid_group(SSL
*s
, uint16_t group_id
, int minversion
,
2662 __owur EVP_PKEY
*ssl_generate_param_group(SSL
*s
, uint16_t id
);
2663 # ifndef OPENSSL_NO_EC
2664 void tls1_get_formatlist(SSL
*s
, const unsigned char **pformats
,
2665 size_t *num_formats
);
2666 __owur
int tls1_check_ec_tmp_key(SSL
*s
, unsigned long id
);
2667 # endif /* OPENSSL_NO_EC */
2669 __owur
int tls_group_allowed(SSL
*s
, uint16_t curve
, int op
);
2670 void tls1_get_supported_groups(SSL
*s
, const uint16_t **pgroups
,
2671 size_t *pgroupslen
);
2673 __owur
int tls1_set_server_sigalgs(SSL
*s
);
2675 __owur SSL_TICKET_STATUS
tls_get_ticket_from_client(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2677 __owur SSL_TICKET_STATUS
tls_decrypt_ticket(SSL
*s
, const unsigned char *etick
,
2679 const unsigned char *sess_id
,
2680 size_t sesslen
, SSL_SESSION
**psess
);
2682 __owur
int tls_use_ticket(SSL
*s
);
2684 void ssl_set_sig_mask(uint32_t *pmask_a
, SSL
*s
, int op
);
2686 __owur
int tls1_set_sigalgs_list(CERT
*c
, const char *str
, int client
);
2687 __owur
int tls1_set_raw_sigalgs(CERT
*c
, const uint16_t *psigs
, size_t salglen
,
2689 __owur
int tls1_set_sigalgs(CERT
*c
, const int *salg
, size_t salglen
,
2691 int tls1_check_chain(SSL
*s
, X509
*x
, EVP_PKEY
*pk
, STACK_OF(X509
) *chain
,
2693 void tls1_set_cert_validity(SSL
*s
);
2695 # ifndef OPENSSL_NO_CT
2696 __owur
int ssl_validate_ct(SSL
*s
);
2699 __owur EVP_PKEY
*ssl_get_auto_dh(SSL
*s
);
2701 __owur
int ssl_security_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
, int vfy
, int is_ee
);
2702 __owur
int ssl_security_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
, X509
*ex
,
2705 int tls_choose_sigalg(SSL
*s
, int fatalerrs
);
2707 __owur EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
);
2708 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
);
2709 __owur
long ssl_get_algorithm2(SSL
*s
);
2710 __owur
int tls12_copy_sigalgs(SSL
*s
, WPACKET
*pkt
,
2711 const uint16_t *psig
, size_t psiglen
);
2712 __owur
int tls1_save_u16(PACKET
*pkt
, uint16_t **pdest
, size_t *pdestlen
);
2713 __owur
int tls1_save_sigalgs(SSL
*s
, PACKET
*pkt
, int cert
);
2714 __owur
int tls1_process_sigalgs(SSL
*s
);
2715 __owur
int tls1_set_peer_legacy_sigalg(SSL
*s
, const EVP_PKEY
*pkey
);
2716 __owur
int tls1_lookup_md(SSL_CTX
*ctx
, const SIGALG_LOOKUP
*lu
,
2717 const EVP_MD
**pmd
);
2718 __owur
size_t tls12_get_psigalgs(SSL
*s
, int sent
, const uint16_t **psigs
);
2719 # ifndef OPENSSL_NO_EC
2720 __owur
int tls_check_sigalg_curve(const SSL
*s
, int curve
);
2722 __owur
int tls12_check_peer_sigalg(SSL
*s
, uint16_t, EVP_PKEY
*pkey
);
2723 __owur
int ssl_set_client_disabled(SSL
*s
);
2724 __owur
int ssl_cipher_disabled(const SSL
*s
, const SSL_CIPHER
*c
, int op
, int echde
);
2726 __owur
int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
2728 __owur
const EVP_MD
*ssl_md(SSL_CTX
*ctx
, int idx
);
2729 __owur
const EVP_MD
*ssl_handshake_md(SSL
*s
);
2730 __owur
const EVP_MD
*ssl_prf_md(SSL
*s
);
2733 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2734 * with |ssl|, if logging is enabled. It returns one on success and zero on
2735 * failure. The entry is identified by the first 8 bytes of
2736 * |encrypted_premaster|.
2738 __owur
int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
2739 const uint8_t *encrypted_premaster
,
2740 size_t encrypted_premaster_len
,
2741 const uint8_t *premaster
,
2742 size_t premaster_len
);
2745 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2746 * logging is available. It returns one on success and zero on failure. It tags
2747 * the entry with |label|.
2749 __owur
int ssl_log_secret(SSL
*ssl
, const char *label
,
2750 const uint8_t *secret
, size_t secret_len
);
2752 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2753 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2754 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2755 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2756 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2757 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2758 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2759 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2761 # ifndef OPENSSL_NO_KTLS
2763 int ktls_check_supported_cipher(const SSL
*s
, const EVP_CIPHER
*c
,
2764 const EVP_CIPHER_CTX
*dd
);
2765 int ktls_configure_crypto(const SSL
*s
, const EVP_CIPHER
*c
, EVP_CIPHER_CTX
*dd
,
2766 void *rl_sequence
, ktls_crypto_info_t
*crypto_info
,
2767 unsigned char **rec_seq
, unsigned char *iv
,
2768 unsigned char *key
, unsigned char *mac_key
,
2769 size_t mac_secret_size
);
2773 __owur
char ssl3_cbc_record_digest_supported(const EVP_MD_CTX
*ctx
);
2774 __owur
int ssl3_cbc_digest_record(const EVP_MD
*md
,
2775 unsigned char *md_out
,
2776 size_t *md_out_size
,
2777 const unsigned char header
[13],
2778 const unsigned char *data
,
2780 size_t data_plus_mac_plus_padding_size
,
2781 const unsigned char *mac_secret
,
2782 size_t mac_secret_length
, char is_sslv3
);
2784 __owur
int srp_generate_server_master_secret(SSL
*s
);
2785 __owur
int srp_generate_client_master_secret(SSL
*s
);
2786 __owur
int srp_verify_server_param(SSL
*s
);
2788 /* statem/statem_srvr.c */
2790 __owur
int send_certificate_request(SSL
*s
);
2792 /* statem/extensions_cust.c */
2794 custom_ext_method
*custom_ext_find(const custom_ext_methods
*exts
,
2795 ENDPOINT role
, unsigned int ext_type
,
2798 void custom_ext_init(custom_ext_methods
*meths
);
2800 __owur
int custom_ext_parse(SSL
*s
, unsigned int context
, unsigned int ext_type
,
2801 const unsigned char *ext_data
, size_t ext_size
,
2802 X509
*x
, size_t chainidx
);
2803 __owur
int custom_ext_add(SSL
*s
, int context
, WPACKET
*pkt
, X509
*x
,
2804 size_t chainidx
, int maxversion
);
2806 __owur
int custom_exts_copy(custom_ext_methods
*dst
,
2807 const custom_ext_methods
*src
);
2808 __owur
int custom_exts_copy_flags(custom_ext_methods
*dst
,
2809 const custom_ext_methods
*src
);
2810 void custom_exts_free(custom_ext_methods
*exts
);
2812 void ssl_comp_free_compression_methods_int(void);
2815 void ssl_ctx_system_config(SSL_CTX
*ctx
);
2817 const EVP_CIPHER
*ssl_evp_cipher_fetch(OSSL_LIB_CTX
*libctx
,
2819 const char *properties
);
2820 int ssl_evp_cipher_up_ref(const EVP_CIPHER
*cipher
);
2821 void ssl_evp_cipher_free(const EVP_CIPHER
*cipher
);
2822 const EVP_MD
*ssl_evp_md_fetch(OSSL_LIB_CTX
*libctx
,
2824 const char *properties
);
2825 int ssl_evp_md_up_ref(const EVP_MD
*md
);
2826 void ssl_evp_md_free(const EVP_MD
*md
);
2828 int tls_provider_set_tls_params(SSL
*s
, EVP_CIPHER_CTX
*ctx
,
2829 const EVP_CIPHER
*ciph
,
2832 void tls_engine_finish(ENGINE
*e
);
2833 const EVP_CIPHER
*tls_get_cipher_from_engine(int nid
);
2834 const EVP_MD
*tls_get_digest_from_engine(int nid
);
2835 int tls_engine_load_ssl_client_cert(SSL
*s
, X509
**px509
, EVP_PKEY
**ppkey
);
2836 int ssl_hmac_old_new(SSL_HMAC
*ret
);
2837 void ssl_hmac_old_free(SSL_HMAC
*ctx
);
2838 int ssl_hmac_old_init(SSL_HMAC
*ctx
, void *key
, size_t len
, char *md
);
2839 int ssl_hmac_old_update(SSL_HMAC
*ctx
, const unsigned char *data
, size_t len
);
2840 int ssl_hmac_old_final(SSL_HMAC
*ctx
, unsigned char *md
, size_t *len
);
2841 size_t ssl_hmac_old_size(const SSL_HMAC
*ctx
);
2843 # else /* OPENSSL_UNIT_TEST */
2845 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2846 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers