2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
12 #ifndef HEADER_SSL_LOCL_H
13 # define HEADER_SSL_LOCL_H
15 # include "e_os.h" /* struct timeval for DTLS */
21 # include <openssl/buffer.h>
22 # include <openssl/comp.h>
23 # include <openssl/bio.h>
24 # include <openssl/rsa.h>
25 # include <openssl/dsa.h>
26 # include <openssl/err.h>
27 # include <openssl/ssl.h>
28 # include <openssl/async.h>
29 # include <openssl/symhacks.h>
30 # include <openssl/ct.h>
31 # include "record/record.h"
32 # include "statem/statem.h"
33 # include "packet_locl.h"
34 # include "internal/dane.h"
35 # include "internal/refcount.h"
36 # include "internal/tsan_assist.h"
38 # ifdef OPENSSL_BUILD_SHLIBSSL
39 # undef OPENSSL_EXTERN
40 # define OPENSSL_EXTERN OPENSSL_EXPORT
43 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
44 l|=(((unsigned long)(*((c)++)))<< 8), \
45 l|=(((unsigned long)(*((c)++)))<<16), \
46 l|=(((unsigned long)(*((c)++)))<<24))
48 /* NOTE - c is not incremented as per c2l */
49 # define c2ln(c,l1,l2,n) { \
53 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
54 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
55 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
56 case 5: l2|=((unsigned long)(*(--(c)))); \
57 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
58 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
59 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
60 case 1: l1|=((unsigned long)(*(--(c)))); \
64 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
65 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
66 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
67 *((c)++)=(unsigned char)(((l)>>24)&0xff))
69 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
70 l|=((unsigned long)(*((c)++)))<<16, \
71 l|=((unsigned long)(*((c)++)))<< 8, \
72 l|=((unsigned long)(*((c)++))))
74 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
75 l|=((uint64_t)(*((c)++)))<<48, \
76 l|=((uint64_t)(*((c)++)))<<40, \
77 l|=((uint64_t)(*((c)++)))<<32, \
78 l|=((uint64_t)(*((c)++)))<<24, \
79 l|=((uint64_t)(*((c)++)))<<16, \
80 l|=((uint64_t)(*((c)++)))<< 8, \
81 l|=((uint64_t)(*((c)++))))
84 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
85 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
86 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
87 *((c)++)=(unsigned char)(((l) )&0xff))
89 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
90 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
91 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
92 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
93 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
94 *((c)++)=(unsigned char)(((l) )&0xff))
96 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
97 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
98 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
99 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
102 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
103 *((c)++)=(unsigned char)(((l) )&0xff))
105 /* NOTE - c is not incremented as per l2c */
106 # define l2cn(l1,l2,c,n) { \
109 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
110 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
111 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
112 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
113 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
114 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
115 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
116 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
120 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
121 (((unsigned int)((c)[1])) )),(c)+=2)
122 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
123 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
125 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
126 (((unsigned long)((c)[1]))<< 8)| \
127 (((unsigned long)((c)[2])) )),(c)+=3)
129 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
130 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
131 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
134 * DTLS version numbers are strange because they're inverted. Except for
135 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
137 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
138 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
139 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
140 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
141 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
145 * Define the Bitmasks for SSL_CIPHER.algorithms.
146 * This bits are used packed as dense as possible. If new methods/ciphers
147 * etc will be added, the bits a likely to change, so this information
148 * is for internal library use only, even though SSL_CIPHER.algorithms
149 * can be publicly accessed.
150 * Use the according functions for cipher management instead.
152 * The bit mask handling in the selection and sorting scheme in
153 * ssl_create_cipher_list() has only limited capabilities, reflecting
154 * that the different entities within are mutually exclusive:
155 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
158 /* Bits for algorithm_mkey (key exchange algorithm) */
159 /* RSA key exchange */
160 # define SSL_kRSA 0x00000001U
161 /* tmp DH key no DH cert */
162 # define SSL_kDHE 0x00000002U
164 # define SSL_kEDH SSL_kDHE
166 # define SSL_kECDHE 0x00000004U
168 # define SSL_kEECDH SSL_kECDHE
170 # define SSL_kPSK 0x00000008U
171 /* GOST key exchange */
172 # define SSL_kGOST 0x00000010U
174 # define SSL_kSRP 0x00000020U
176 # define SSL_kRSAPSK 0x00000040U
177 # define SSL_kECDHEPSK 0x00000080U
178 # define SSL_kDHEPSK 0x00000100U
182 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
184 /* Any appropriate key exchange algorithm (for TLS 1.3 ciphersuites) */
185 # define SSL_kANY 0x00000000U
187 /* Bits for algorithm_auth (server authentication) */
189 # define SSL_aRSA 0x00000001U
191 # define SSL_aDSS 0x00000002U
192 /* no auth (i.e. use ADH or AECDH) */
193 # define SSL_aNULL 0x00000004U
195 # define SSL_aECDSA 0x00000008U
197 # define SSL_aPSK 0x00000010U
198 /* GOST R 34.10-2001 signature auth */
199 # define SSL_aGOST01 0x00000020U
201 # define SSL_aSRP 0x00000040U
202 /* GOST R 34.10-2012 signature auth */
203 # define SSL_aGOST12 0x00000080U
204 /* Any appropriate signature auth (for TLS 1.3 ciphersuites) */
205 # define SSL_aANY 0x00000000U
206 /* All bits requiring a certificate */
208 (SSL_aRSA | SSL_aDSS | SSL_aECDSA | SSL_aGOST01 | SSL_aGOST12)
210 /* Bits for algorithm_enc (symmetric encryption) */
211 # define SSL_DES 0x00000001U
212 # define SSL_3DES 0x00000002U
213 # define SSL_RC4 0x00000004U
214 # define SSL_RC2 0x00000008U
215 # define SSL_IDEA 0x00000010U
216 # define SSL_eNULL 0x00000020U
217 # define SSL_AES128 0x00000040U
218 # define SSL_AES256 0x00000080U
219 # define SSL_CAMELLIA128 0x00000100U
220 # define SSL_CAMELLIA256 0x00000200U
221 # define SSL_eGOST2814789CNT 0x00000400U
222 # define SSL_SEED 0x00000800U
223 # define SSL_AES128GCM 0x00001000U
224 # define SSL_AES256GCM 0x00002000U
225 # define SSL_AES128CCM 0x00004000U
226 # define SSL_AES256CCM 0x00008000U
227 # define SSL_AES128CCM8 0x00010000U
228 # define SSL_AES256CCM8 0x00020000U
229 # define SSL_eGOST2814789CNT12 0x00040000U
230 # define SSL_CHACHA20POLY1305 0x00080000U
231 # define SSL_ARIA128GCM 0x00100000U
232 # define SSL_ARIA256GCM 0x00200000U
234 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
235 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
236 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
237 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
238 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
239 # define SSL_ARIAGCM (SSL_ARIA128GCM | SSL_ARIA256GCM)
240 # define SSL_ARIA (SSL_ARIAGCM)
242 /* Bits for algorithm_mac (symmetric authentication) */
244 # define SSL_MD5 0x00000001U
245 # define SSL_SHA1 0x00000002U
246 # define SSL_GOST94 0x00000004U
247 # define SSL_GOST89MAC 0x00000008U
248 # define SSL_SHA256 0x00000010U
249 # define SSL_SHA384 0x00000020U
250 /* Not a real MAC, just an indication it is part of cipher */
251 # define SSL_AEAD 0x00000040U
252 # define SSL_GOST12_256 0x00000080U
253 # define SSL_GOST89MAC12 0x00000100U
254 # define SSL_GOST12_512 0x00000200U
257 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
258 * sure to update this constant too
261 # define SSL_MD_MD5_IDX 0
262 # define SSL_MD_SHA1_IDX 1
263 # define SSL_MD_GOST94_IDX 2
264 # define SSL_MD_GOST89MAC_IDX 3
265 # define SSL_MD_SHA256_IDX 4
266 # define SSL_MD_SHA384_IDX 5
267 # define SSL_MD_GOST12_256_IDX 6
268 # define SSL_MD_GOST89MAC12_IDX 7
269 # define SSL_MD_GOST12_512_IDX 8
270 # define SSL_MD_MD5_SHA1_IDX 9
271 # define SSL_MD_SHA224_IDX 10
272 # define SSL_MD_SHA512_IDX 11
273 # define SSL_MAX_DIGEST 12
275 /* Bits for algorithm2 (handshake digests and other extra flags) */
277 /* Bits 0-7 are handshake MAC */
278 # define SSL_HANDSHAKE_MAC_MASK 0xFF
279 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
280 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
281 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
282 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
283 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
284 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
285 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
287 /* Bits 8-15 bits are PRF */
288 # define TLS1_PRF_DGST_SHIFT 8
289 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
290 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
291 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
292 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
293 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
294 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
295 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
298 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
299 * goes into algorithm2)
301 # define TLS1_STREAM_MAC 0x10000
303 # define SSL_STRONG_MASK 0x0000001FU
304 # define SSL_DEFAULT_MASK 0X00000020U
306 # define SSL_STRONG_NONE 0x00000001U
307 # define SSL_LOW 0x00000002U
308 # define SSL_MEDIUM 0x00000004U
309 # define SSL_HIGH 0x00000008U
310 # define SSL_FIPS 0x00000010U
311 # define SSL_NOT_DEFAULT 0x00000020U
313 /* we have used 0000003f - 26 bits left to go */
315 /* Flag used on OpenSSL ciphersuite ids to indicate they are for SSLv3+ */
316 # define SSL3_CK_CIPHERSUITE_FLAG 0x03000000
318 /* Check if an SSL structure is using DTLS */
319 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
321 /* Check if we are using TLSv1.3 */
322 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
323 && (s)->method->version >= TLS1_3_VERSION \
324 && (s)->method->version != TLS_ANY_VERSION)
326 # define SSL_TREAT_AS_TLS13(s) \
327 (SSL_IS_TLS13(s) || (s)->early_data_state == SSL_EARLY_DATA_CONNECTING \
328 || (s)->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY \
329 || (s)->early_data_state == SSL_EARLY_DATA_WRITING \
330 || (s)->early_data_state == SSL_EARLY_DATA_WRITE_RETRY \
331 || (s)->hello_retry_request == SSL_HRR_PENDING)
333 # define SSL_IS_FIRST_HANDSHAKE(S) ((s)->s3->tmp.finish_md_len == 0 \
334 || (s)->s3->tmp.peer_finish_md_len == 0)
336 /* See if we need explicit IV */
337 # define SSL_USE_EXPLICIT_IV(s) \
338 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
340 * See if we use signature algorithms extension and signature algorithm
343 # define SSL_USE_SIGALGS(s) \
344 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
346 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
347 * apply to others in future.
349 # define SSL_USE_TLS1_2_CIPHERS(s) \
350 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
352 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
353 * flags because it may not be set to correct version yet.
355 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
356 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
357 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
359 * Determine if a client should send signature algorithms extension:
360 * as with TLS1.2 cipher we can't rely on method flags.
362 # define SSL_CLIENT_USE_SIGALGS(s) \
363 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
365 # define IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value) \
366 (((value) >= TLSEXT_max_fragment_length_512) && \
367 ((value) <= TLSEXT_max_fragment_length_4096))
368 # define USE_MAX_FRAGMENT_LENGTH_EXT(session) \
369 IS_MAX_FRAGMENT_LENGTH_EXT_VALID(session->ext.max_fragment_len_mode)
370 # define GET_MAX_FRAGMENT_LENGTH(session) \
371 (512U << (session->ext.max_fragment_len_mode - 1))
373 # define SSL_READ_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_READ)
374 # define SSL_WRITE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE)
376 /* Mostly for SSLv3 */
377 # define SSL_PKEY_RSA 0
378 # define SSL_PKEY_RSA_PSS_SIGN 1
379 # define SSL_PKEY_DSA_SIGN 2
380 # define SSL_PKEY_ECC 3
381 # define SSL_PKEY_GOST01 4
382 # define SSL_PKEY_GOST12_256 5
383 # define SSL_PKEY_GOST12_512 6
384 # define SSL_PKEY_ED25519 7
385 # define SSL_PKEY_ED448 8
386 # define SSL_PKEY_NUM 9
389 * SSL_kRSA <- RSA_ENC
390 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
391 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
392 * SSL_aRSA <- RSA_ENC | RSA_SIGN
393 * SSL_aDSS <- DSA_SIGN
397 #define CERT_INVALID 0
398 #define CERT_PUBLIC_KEY 1
399 #define CERT_PRIVATE_KEY 2
402 /* Post-Handshake Authentication state */
405 SSL_PHA_EXT_SENT
, /* client-side only: extension sent */
406 SSL_PHA_EXT_RECEIVED
, /* server-side only: extension received */
407 SSL_PHA_REQUEST_PENDING
, /* server-side only: request pending */
408 SSL_PHA_REQUESTED
/* request received by client, or sent by server */
411 /* CipherSuite length. SSLv3 and all TLS versions. */
412 # define TLS_CIPHER_LEN 2
413 /* used to hold info on the particular ciphers used */
414 struct ssl_cipher_st
{
416 const char *name
; /* text name */
417 const char *stdname
; /* RFC name */
418 uint32_t id
; /* id, 4 bytes, first is version */
420 * changed in 1.0.0: these four used to be portions of a single value
423 uint32_t algorithm_mkey
; /* key exchange algorithm */
424 uint32_t algorithm_auth
; /* server authentication */
425 uint32_t algorithm_enc
; /* symmetric encryption */
426 uint32_t algorithm_mac
; /* symmetric authentication */
427 int min_tls
; /* minimum SSL/TLS protocol version */
428 int max_tls
; /* maximum SSL/TLS protocol version */
429 int min_dtls
; /* minimum DTLS protocol version */
430 int max_dtls
; /* maximum DTLS protocol version */
431 uint32_t algo_strength
; /* strength and export flags */
432 uint32_t algorithm2
; /* Extra flags */
433 int32_t strength_bits
; /* Number of bits really used */
434 uint32_t alg_bits
; /* Number of bits for algorithm */
437 /* Used to hold SSL/TLS functions */
438 struct ssl_method_st
{
442 int (*ssl_new
) (SSL
*s
);
443 int (*ssl_clear
) (SSL
*s
);
444 void (*ssl_free
) (SSL
*s
);
445 int (*ssl_accept
) (SSL
*s
);
446 int (*ssl_connect
) (SSL
*s
);
447 int (*ssl_read
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
448 int (*ssl_peek
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
449 int (*ssl_write
) (SSL
*s
, const void *buf
, size_t len
, size_t *written
);
450 int (*ssl_shutdown
) (SSL
*s
);
451 int (*ssl_renegotiate
) (SSL
*s
);
452 int (*ssl_renegotiate_check
) (SSL
*s
, int);
453 int (*ssl_read_bytes
) (SSL
*s
, int type
, int *recvd_type
,
454 unsigned char *buf
, size_t len
, int peek
,
456 int (*ssl_write_bytes
) (SSL
*s
, int type
, const void *buf_
, size_t len
,
458 int (*ssl_dispatch_alert
) (SSL
*s
);
459 long (*ssl_ctrl
) (SSL
*s
, int cmd
, long larg
, void *parg
);
460 long (*ssl_ctx_ctrl
) (SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
);
461 const SSL_CIPHER
*(*get_cipher_by_char
) (const unsigned char *ptr
);
462 int (*put_cipher_by_char
) (const SSL_CIPHER
*cipher
, WPACKET
*pkt
,
464 size_t (*ssl_pending
) (const SSL
*s
);
465 int (*num_ciphers
) (void);
466 const SSL_CIPHER
*(*get_cipher
) (unsigned ncipher
);
467 long (*get_timeout
) (void);
468 const struct ssl3_enc_method
*ssl3_enc
; /* Extra SSLv3/TLS stuff */
469 int (*ssl_version
) (void);
470 long (*ssl_callback_ctrl
) (SSL
*s
, int cb_id
, void (*fp
) (void));
471 long (*ssl_ctx_callback_ctrl
) (SSL_CTX
*s
, int cb_id
, void (*fp
) (void));
474 # define TLS13_MAX_RESUMPTION_PSK_LENGTH 64
477 * Lets make this into an ASN.1 type structure as follows
478 * SSL_SESSION_ID ::= SEQUENCE {
479 * version INTEGER, -- structure version number
480 * SSLversion INTEGER, -- SSL version number
481 * Cipher OCTET STRING, -- the 3 byte cipher ID
482 * Session_ID OCTET STRING, -- the Session ID
483 * Master_key OCTET STRING, -- the master key
484 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
485 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
486 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
487 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
488 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
489 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
490 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
491 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
492 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
493 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
494 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
495 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
496 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
497 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
499 * Look in ssl/ssl_asn1.c for more details
500 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
502 struct ssl_session_st
{
503 int ssl_version
; /* what ssl version session info is being kept
505 size_t master_key_length
;
507 /* TLSv1.3 early_secret used for external PSKs */
508 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
510 * For <=TLS1.2 this is the master_key. For TLS1.3 this is the resumption
513 unsigned char master_key
[TLS13_MAX_RESUMPTION_PSK_LENGTH
];
514 /* session_id - valid? */
515 size_t session_id_length
;
516 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
518 * this is used to determine whether the session is being reused in the
519 * appropriate context. It is up to the application to set this, via
522 size_t sid_ctx_length
;
523 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
524 # ifndef OPENSSL_NO_PSK
525 char *psk_identity_hint
;
529 * Used to indicate that session resumption is not allowed. Applications
530 * can also set this bit for a new session via not_resumable_session_cb
531 * to disable session caching and tickets.
534 /* This is the cert and type for the other end. */
537 /* Certificate chain peer sent. */
538 STACK_OF(X509
) *peer_chain
;
540 * when app_verify_callback accepts a session where the peer's
541 * certificate is not ok, we must remember the error for session reuse:
543 long verify_result
; /* only for servers */
544 CRYPTO_REF_COUNT references
;
547 unsigned int compress_meth
; /* Need to lookup the method */
548 const SSL_CIPHER
*cipher
;
549 unsigned long cipher_id
; /* when ASN.1 loaded, this needs to be used to
550 * load the 'cipher' structure */
551 STACK_OF(SSL_CIPHER
) *ciphers
; /* ciphers offered by the client */
552 CRYPTO_EX_DATA ex_data
; /* application specific data */
554 * These are used to make removal of session-ids more efficient and to
555 * implement a maximum cache size.
557 struct ssl_session_st
*prev
, *next
;
561 # ifndef OPENSSL_NO_EC
562 size_t ecpointformats_len
;
563 unsigned char *ecpointformats
; /* peer's list */
564 # endif /* OPENSSL_NO_EC */
565 size_t supportedgroups_len
;
566 uint16_t *supportedgroups
; /* peer's list */
568 unsigned char *tick
; /* Session ticket */
569 size_t ticklen
; /* Session ticket length */
570 /* Session lifetime hint in seconds */
571 unsigned long tick_lifetime_hint
;
572 uint32_t tick_age_add
;
574 /* Max number of bytes that can be sent as early data */
575 uint32_t max_early_data
;
576 /* The ALPN protocol selected for this session */
577 unsigned char *alpn_selected
;
578 size_t alpn_selected_len
;
580 * Maximum Fragment Length as per RFC 4366.
581 * If this value does not contain RFC 4366 allowed values (1-4) then
582 * either the Maximum Fragment Length Negotiation failed or was not
585 uint8_t max_fragment_len_mode
;
587 # ifndef OPENSSL_NO_SRP
590 unsigned char *ticket_appdata
;
591 size_t ticket_appdata_len
;
596 /* Extended master secret support */
597 # define SSL_SESS_FLAG_EXTMS 0x1
599 # ifndef OPENSSL_NO_SRP
601 typedef struct srp_ctx_st
{
602 /* param for all the callbacks */
604 /* set client Hello login callback */
605 int (*TLS_ext_srp_username_callback
) (SSL
*, int *, void *);
606 /* set SRP N/g param callback for verification */
607 int (*SRP_verify_param_callback
) (SSL
*, void *);
608 /* set SRP client passwd callback */
609 char *(*SRP_give_srp_client_pwd_callback
) (SSL
*, void *);
611 BIGNUM
*N
, *g
, *s
, *B
, *A
;
615 unsigned long srp_Mask
;
621 SSL_EARLY_DATA_NONE
= 0,
622 SSL_EARLY_DATA_CONNECT_RETRY
,
623 SSL_EARLY_DATA_CONNECTING
,
624 SSL_EARLY_DATA_WRITE_RETRY
,
625 SSL_EARLY_DATA_WRITING
,
626 SSL_EARLY_DATA_WRITE_FLUSH
,
627 SSL_EARLY_DATA_UNAUTH_WRITING
,
628 SSL_EARLY_DATA_FINISHED_WRITING
,
629 SSL_EARLY_DATA_ACCEPT_RETRY
,
630 SSL_EARLY_DATA_ACCEPTING
,
631 SSL_EARLY_DATA_READ_RETRY
,
632 SSL_EARLY_DATA_READING
,
633 SSL_EARLY_DATA_FINISHED_READING
634 } SSL_EARLY_DATA_STATE
;
637 * We check that the amount of unreadable early data doesn't exceed
638 * max_early_data. max_early_data is given in plaintext bytes. However if it is
639 * unreadable then we only know the number of ciphertext bytes. We also don't
640 * know how much the overhead should be because it depends on the ciphersuite.
641 * We make a small allowance. We assume 5 records of actual data plus the end
642 * of early data alert record. Each record has a tag and a content type byte.
643 * The longest tag length we know of is EVP_GCM_TLS_TAG_LEN. We don't count the
644 * content of the alert record either which is 2 bytes.
646 # define EARLY_DATA_CIPHERTEXT_OVERHEAD ((6 * (EVP_GCM_TLS_TAG_LEN + 1)) + 2)
649 * The allowance we have between the client's calculated ticket age and our own.
650 * We allow for 10 seconds (units are in ms). If a ticket is presented and the
651 * client's age calculation is different by more than this than our own then we
652 * do not allow that ticket for early_data.
654 # define TICKET_AGE_ALLOWANCE (10 * 1000)
656 #define MAX_COMPRESSIONS_SIZE 255
664 typedef struct raw_extension_st
{
665 /* Raw packet data for the extension */
667 /* Set to 1 if the extension is present or 0 otherwise */
669 /* Set to 1 if we have already parsed the extension or 0 otherwise */
671 /* The type of this extension, i.e. a TLSEXT_TYPE_* value */
673 /* Track what order extensions are received in (0-based). */
674 size_t received_order
;
679 unsigned int legacy_version
;
680 unsigned char random
[SSL3_RANDOM_SIZE
];
681 size_t session_id_len
;
682 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
683 size_t dtls_cookie_len
;
684 unsigned char dtls_cookie
[DTLS1_COOKIE_LENGTH
];
686 size_t compressions_len
;
687 unsigned char compressions
[MAX_COMPRESSIONS_SIZE
];
689 size_t pre_proc_exts_len
;
690 RAW_EXTENSION
*pre_proc_exts
;
694 * Extension index values NOTE: Any updates to these defines should be mirrored
695 * with equivalent updates to ext_defs in extensions.c
697 typedef enum tlsext_index_en
{
698 TLSEXT_IDX_renegotiate
,
699 TLSEXT_IDX_server_name
,
700 TLSEXT_IDX_max_fragment_length
,
702 TLSEXT_IDX_ec_point_formats
,
703 TLSEXT_IDX_supported_groups
,
704 TLSEXT_IDX_session_ticket
,
705 TLSEXT_IDX_status_request
,
706 TLSEXT_IDX_next_proto_neg
,
707 TLSEXT_IDX_application_layer_protocol_negotiation
,
709 TLSEXT_IDX_encrypt_then_mac
,
710 TLSEXT_IDX_signed_certificate_timestamp
,
711 TLSEXT_IDX_extended_master_secret
,
712 TLSEXT_IDX_signature_algorithms_cert
,
713 TLSEXT_IDX_post_handshake_auth
,
714 TLSEXT_IDX_signature_algorithms
,
715 TLSEXT_IDX_supported_versions
,
716 TLSEXT_IDX_psk_kex_modes
,
717 TLSEXT_IDX_key_share
,
719 TLSEXT_IDX_cryptopro_bug
,
720 TLSEXT_IDX_early_data
,
721 TLSEXT_IDX_certificate_authorities
,
724 /* Dummy index - must always be the last entry */
725 TLSEXT_IDX_num_builtins
728 DEFINE_LHASH_OF(SSL_SESSION
);
729 /* Needed in ssl_cert.c */
730 DEFINE_LHASH_OF(X509_NAME
);
732 # define TLSEXT_KEYNAME_LENGTH 16
733 # define TLSEXT_TICK_KEY_LENGTH 32
735 typedef struct ssl_ctx_ext_secure_st
{
736 unsigned char tick_hmac_key
[TLSEXT_TICK_KEY_LENGTH
];
737 unsigned char tick_aes_key
[TLSEXT_TICK_KEY_LENGTH
];
738 } SSL_CTX_EXT_SECURE
;
741 const SSL_METHOD
*method
;
742 STACK_OF(SSL_CIPHER
) *cipher_list
;
743 /* same as above but sorted for lookup */
744 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
745 /* TLSv1.3 specific ciphersuites */
746 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
;
747 struct x509_store_st
/* X509_STORE */ *cert_store
;
748 LHASH_OF(SSL_SESSION
) *sessions
;
750 * Most session-ids that will be cached, default is
751 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
753 size_t session_cache_size
;
754 struct ssl_session_st
*session_cache_head
;
755 struct ssl_session_st
*session_cache_tail
;
757 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
758 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
759 * means only SSL_accept will cache SSL_SESSIONS.
761 uint32_t session_cache_mode
;
763 * If timeout is not 0, it is the default timeout value set when
764 * SSL_new() is called. This has been put in to make life easier to set
767 long session_timeout
;
769 * If this callback is not null, it will be called each time a session id
770 * is added to the cache. If this function returns 1, it means that the
771 * callback will do a SSL_SESSION_free() when it has finished using it.
772 * Otherwise, on 0, it means the callback has finished with it. If
773 * remove_session_cb is not null, it will be called when a session-id is
774 * removed from the cache. After the call, OpenSSL will
775 * SSL_SESSION_free() it.
777 int (*new_session_cb
) (struct ssl_st
*ssl
, SSL_SESSION
*sess
);
778 void (*remove_session_cb
) (struct ssl_ctx_st
*ctx
, SSL_SESSION
*sess
);
779 SSL_SESSION
*(*get_session_cb
) (struct ssl_st
*ssl
,
780 const unsigned char *data
, int len
,
783 TSAN_QUALIFIER
int sess_connect
; /* SSL new conn - started */
784 TSAN_QUALIFIER
int sess_connect_renegotiate
; /* SSL reneg - requested */
785 TSAN_QUALIFIER
int sess_connect_good
; /* SSL new conne/reneg - finished */
786 TSAN_QUALIFIER
int sess_accept
; /* SSL new accept - started */
787 TSAN_QUALIFIER
int sess_accept_renegotiate
; /* SSL reneg - requested */
788 TSAN_QUALIFIER
int sess_accept_good
; /* SSL accept/reneg - finished */
789 TSAN_QUALIFIER
int sess_miss
; /* session lookup misses */
790 TSAN_QUALIFIER
int sess_timeout
; /* reuse attempt on timeouted session */
791 TSAN_QUALIFIER
int sess_cache_full
; /* session removed due to full cache */
792 TSAN_QUALIFIER
int sess_hit
; /* session reuse actually done */
793 TSAN_QUALIFIER
int sess_cb_hit
; /* session-id that was not in
794 * the cache was passed back via
795 * the callback. This indicates
796 * that the application is
797 * supplying session-id's from
798 * other processes - spooky
802 CRYPTO_REF_COUNT references
;
804 /* if defined, these override the X509_verify_cert() calls */
805 int (*app_verify_callback
) (X509_STORE_CTX
*, void *);
806 void *app_verify_arg
;
808 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
809 * ('app_verify_callback' was called with just one argument)
812 /* Default password callback. */
813 pem_password_cb
*default_passwd_callback
;
815 /* Default password callback user data. */
816 void *default_passwd_callback_userdata
;
818 /* get client cert callback */
819 int (*client_cert_cb
) (SSL
*ssl
, X509
**x509
, EVP_PKEY
**pkey
);
821 /* cookie generate callback */
822 int (*app_gen_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
823 unsigned int *cookie_len
);
825 /* verify cookie callback */
826 int (*app_verify_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
827 unsigned int cookie_len
);
829 /* TLS1.3 app-controlled cookie generate callback */
830 int (*gen_stateless_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
833 /* TLS1.3 verify app-controlled cookie callback */
834 int (*verify_stateless_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
837 CRYPTO_EX_DATA ex_data
;
839 const EVP_MD
*md5
; /* For SSLv3/TLSv1 'ssl3-md5' */
840 const EVP_MD
*sha1
; /* For SSLv3/TLSv1 'ssl3->sha1' */
842 STACK_OF(X509
) *extra_certs
;
843 STACK_OF(SSL_COMP
) *comp_methods
; /* stack of SSL_COMP, SSLv3/TLSv1 */
845 /* Default values used when no per-SSL value is defined follow */
847 /* used if SSL's info_callback is NULL */
848 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
851 * What we put in certificate_authorities extension for TLS 1.3
852 * (ClientHello and CertificateRequest) or just client cert requests for
855 STACK_OF(X509_NAME
) *ca_names
;
858 * Default values to use in SSL structures follow (these are copied by
864 int min_proto_version
;
865 int max_proto_version
;
866 size_t max_cert_list
;
868 struct cert_st
/* CERT */ *cert
;
871 /* callback that allows applications to peek at protocol messages */
872 void (*msg_callback
) (int write_p
, int version
, int content_type
,
873 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
874 void *msg_callback_arg
;
876 uint32_t verify_mode
;
877 size_t sid_ctx_length
;
878 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
879 /* called 'verify_callback' in the SSL */
880 int (*default_verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
882 /* Default generate session ID callback. */
883 GEN_SESSION_CB generate_session_id
;
885 X509_VERIFY_PARAM
*param
;
889 # ifndef OPENSSL_NO_CT
890 CTLOG_STORE
*ctlog_store
; /* CT Log Store */
892 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
893 * If they are not, the connection should be aborted.
895 ssl_ct_validation_cb ct_validation_callback
;
896 void *ct_validation_callback_arg
;
900 * If we're using more than one pipeline how should we divide the data
901 * up between the pipes?
903 size_t split_send_fragment
;
905 * Maximum amount of data to send in one fragment. actual record size can
906 * be more than this due to padding and MAC overheads.
908 size_t max_send_fragment
;
910 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
911 size_t max_pipelines
;
913 /* The default read buffer length to use (0 means not set) */
914 size_t default_read_buf_len
;
916 # ifndef OPENSSL_NO_ENGINE
918 * Engine to pass requests for client certs to
920 ENGINE
*client_cert_engine
;
923 /* ClientHello callback. Mostly for extensions, but not entirely. */
924 SSL_client_hello_cb_fn client_hello_cb
;
925 void *client_hello_cb_arg
;
927 /* TLS extensions. */
929 /* TLS extensions servername callback */
930 int (*servername_cb
) (SSL
*, int *, void *);
931 void *servername_arg
;
932 /* RFC 4507 session ticket keys */
933 unsigned char tick_key_name
[TLSEXT_KEYNAME_LENGTH
];
934 SSL_CTX_EXT_SECURE
*secure
;
935 /* Callback to support customisation of ticket key setting */
936 int (*ticket_key_cb
) (SSL
*ssl
,
937 unsigned char *name
, unsigned char *iv
,
938 EVP_CIPHER_CTX
*ectx
, HMAC_CTX
*hctx
, int enc
);
940 /* certificate status request info */
941 /* Callback for status request */
942 int (*status_cb
) (SSL
*ssl
, void *arg
);
944 /* ext status type used for CSR extension (OCSP Stapling) */
946 /* RFC 4366 Maximum Fragment Length Negotiation */
947 uint8_t max_fragment_len_mode
;
949 # ifndef OPENSSL_NO_EC
950 /* EC extension values inherited by SSL structure */
951 size_t ecpointformats_len
;
952 unsigned char *ecpointformats
;
953 size_t supportedgroups_len
;
954 uint16_t *supportedgroups
;
955 # endif /* OPENSSL_NO_EC */
958 * ALPN information (we are in the process of transitioning from NPN to
963 * For a server, this contains a callback function that allows the
964 * server to select the protocol for the connection.
965 * out: on successful return, this must point to the raw protocol
966 * name (without the length prefix).
967 * outlen: on successful return, this contains the length of |*out|.
968 * in: points to the client's list of supported protocols in
970 * inlen: the length of |in|.
972 int (*alpn_select_cb
) (SSL
*s
,
973 const unsigned char **out
,
974 unsigned char *outlen
,
975 const unsigned char *in
,
976 unsigned int inlen
, void *arg
);
977 void *alpn_select_cb_arg
;
980 * For a client, this contains the list of supported protocols in wire
986 # ifndef OPENSSL_NO_NEXTPROTONEG
987 /* Next protocol negotiation information */
990 * For a server, this contains a callback function by which the set of
991 * advertised protocols can be provided.
993 SSL_CTX_npn_advertised_cb_func npn_advertised_cb
;
994 void *npn_advertised_cb_arg
;
996 * For a client, this contains a callback function that selects the next
997 * protocol from the list provided by the server.
999 SSL_CTX_npn_select_cb_func npn_select_cb
;
1000 void *npn_select_cb_arg
;
1003 unsigned char cookie_hmac_key
[SHA256_DIGEST_LENGTH
];
1006 # ifndef OPENSSL_NO_PSK
1007 SSL_psk_client_cb_func psk_client_callback
;
1008 SSL_psk_server_cb_func psk_server_callback
;
1010 SSL_psk_find_session_cb_func psk_find_session_cb
;
1011 SSL_psk_use_session_cb_func psk_use_session_cb
;
1013 # ifndef OPENSSL_NO_SRP
1014 SRP_CTX srp_ctx
; /* ctx for SRP authentication */
1017 /* Shared DANE context */
1018 struct dane_ctx_st dane
;
1020 # ifndef OPENSSL_NO_SRTP
1021 /* SRTP profiles we are willing to do from RFC 5764 */
1022 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1025 * Callback for disabling session caching and ticket support on a session
1026 * basis, depending on the chosen cipher.
1028 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1030 CRYPTO_RWLOCK
*lock
;
1033 * Callback for logging key material for use with debugging tools like
1034 * Wireshark. The callback should log `line` followed by a newline.
1036 SSL_CTX_keylog_cb_func keylog_callback
;
1039 * The maximum number of bytes advertised in session tickets that can be
1040 * sent as early data.
1042 uint32_t max_early_data
;
1045 * The maximum number of bytes of early data that a server will tolerate
1046 * (which should be at least as much as max_early_data).
1048 uint32_t recv_max_early_data
;
1050 /* TLS1.3 padding callback */
1051 size_t (*record_padding_cb
)(SSL
*s
, int type
, size_t len
, void *arg
);
1052 void *record_padding_arg
;
1053 size_t block_padding
;
1055 /* Session ticket appdata */
1056 SSL_CTX_generate_session_ticket_fn generate_ticket_cb
;
1057 SSL_CTX_decrypt_session_ticket_fn decrypt_ticket_cb
;
1058 void *ticket_cb_data
;
1060 /* The number of TLS1.3 tickets to automatically send */
1063 /* Callback to determine if early_data is acceptable or not */
1064 SSL_allow_early_data_cb_fn allow_early_data_cb
;
1065 void *allow_early_data_cb_data
;
1070 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
1075 const SSL_METHOD
*method
;
1077 * There are 2 BIO's even though they are normally both the same. This
1078 * is so data can be read and written to different handlers
1080 /* used by SSL_read */
1082 /* used by SSL_write */
1084 /* used during session-id reuse to concatenate messages */
1087 * This holds a variable that indicates what we were doing when a 0 or -1
1088 * is returned. This is needed for non-blocking IO so we know what
1089 * request needs re-doing when in SSL_accept or SSL_connect
1092 int (*handshake_func
) (SSL
*);
1094 * Imagine that here's a boolean member "init" that is switched as soon
1095 * as SSL_set_{accept/connect}_state is called for the first time, so
1096 * that "state" and "handshake_func" are properly initialized. But as
1097 * handshake_func is == 0 until then, we use this test instead of an
1100 /* are we the server side? */
1103 * Generate a new session or reuse an old one.
1104 * NB: For servers, the 'new' session may actually be a previously
1105 * cached session or even the previous session unless
1106 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
1109 /* don't send shutdown packets */
1111 /* we have shut things down, 0x01 sent, 0x02 for received */
1115 SSL_EARLY_DATA_STATE early_data_state
;
1116 BUF_MEM
*init_buf
; /* buffer used during init */
1117 void *init_msg
; /* pointer to handshake message body, set by
1118 * ssl3_get_message() */
1119 size_t init_num
; /* amount read/written */
1120 size_t init_off
; /* amount read/written */
1121 struct ssl3_state_st
*s3
; /* SSLv3 variables */
1122 struct dtls1_state_st
*d1
; /* DTLSv1 variables */
1123 /* callback that allows applications to peek at protocol messages */
1124 void (*msg_callback
) (int write_p
, int version
, int content_type
,
1125 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
1126 void *msg_callback_arg
;
1127 int hit
; /* reusing a previous session */
1128 X509_VERIFY_PARAM
*param
;
1129 /* Per connection DANE state */
1132 STACK_OF(SSL_CIPHER
) *cipher_list
;
1133 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
1134 /* TLSv1.3 specific ciphersuites */
1135 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
;
1137 * These are the ones being used, the ones in SSL_SESSION are the ones to
1138 * be 'copied' into these ones
1142 * The TLS1.3 secrets.
1144 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
1145 unsigned char handshake_secret
[EVP_MAX_MD_SIZE
];
1146 unsigned char master_secret
[EVP_MAX_MD_SIZE
];
1147 unsigned char resumption_master_secret
[EVP_MAX_MD_SIZE
];
1148 unsigned char client_finished_secret
[EVP_MAX_MD_SIZE
];
1149 unsigned char server_finished_secret
[EVP_MAX_MD_SIZE
];
1150 unsigned char server_finished_hash
[EVP_MAX_MD_SIZE
];
1151 unsigned char handshake_traffic_hash
[EVP_MAX_MD_SIZE
];
1152 unsigned char client_app_traffic_secret
[EVP_MAX_MD_SIZE
];
1153 unsigned char server_app_traffic_secret
[EVP_MAX_MD_SIZE
];
1154 unsigned char exporter_master_secret
[EVP_MAX_MD_SIZE
];
1155 unsigned char early_exporter_master_secret
[EVP_MAX_MD_SIZE
];
1156 EVP_CIPHER_CTX
*enc_read_ctx
; /* cryptographic state */
1157 unsigned char read_iv
[EVP_MAX_IV_LENGTH
]; /* TLSv1.3 static read IV */
1158 EVP_MD_CTX
*read_hash
; /* used for mac generation */
1159 COMP_CTX
*compress
; /* compression */
1160 COMP_CTX
*expand
; /* uncompress */
1161 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1162 unsigned char write_iv
[EVP_MAX_IV_LENGTH
]; /* TLSv1.3 static write IV */
1163 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1164 /* Count of how many KeyUpdate messages we have received */
1165 unsigned int key_update_count
;
1168 /* This is used to hold the server certificate used */
1169 struct cert_st
/* CERT */ *cert
;
1172 * The hash of all messages prior to the CertificateVerify, and the length
1175 unsigned char cert_verify_hash
[EVP_MAX_MD_SIZE
];
1176 size_t cert_verify_hash_len
;
1178 /* Flag to indicate whether we should send a HelloRetryRequest or not */
1179 enum {SSL_HRR_NONE
= 0, SSL_HRR_PENDING
, SSL_HRR_COMPLETE
}
1180 hello_retry_request
;
1183 * the session_id_context is used to ensure sessions are only reused in
1184 * the appropriate context
1186 size_t sid_ctx_length
;
1187 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
1188 /* This can also be in the session once a session is established */
1189 SSL_SESSION
*session
;
1190 /* TLSv1.3 PSK session */
1191 SSL_SESSION
*psksession
;
1192 unsigned char *psksession_id
;
1193 size_t psksession_id_len
;
1194 /* Default generate session ID callback. */
1195 GEN_SESSION_CB generate_session_id
;
1197 * The temporary TLSv1.3 session id. This isn't really a session id at all
1198 * but is a random value sent in the legacy session id field.
1200 unsigned char tmp_session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
1201 size_t tmp_session_id_len
;
1204 * 0 don't care about verify failure.
1205 * 1 fail if verify fails
1207 uint32_t verify_mode
;
1208 /* fail if callback returns 0 */
1209 int (*verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
1210 /* optional informational callback */
1211 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
1212 /* error bytes to be written */
1216 # ifndef OPENSSL_NO_PSK
1217 SSL_psk_client_cb_func psk_client_callback
;
1218 SSL_psk_server_cb_func psk_server_callback
;
1220 SSL_psk_find_session_cb_func psk_find_session_cb
;
1221 SSL_psk_use_session_cb_func psk_use_session_cb
;
1224 /* Verified chain of peer */
1225 STACK_OF(X509
) *verified_chain
;
1227 /* extra application data */
1228 CRYPTO_EX_DATA ex_data
;
1229 /* for server side, keep the list of CA_dn we can use */
1230 STACK_OF(X509_NAME
) *ca_names
;
1231 CRYPTO_REF_COUNT references
;
1232 /* protocol behaviour */
1236 int min_proto_version
;
1237 int max_proto_version
;
1238 size_t max_cert_list
;
1241 * What was passed in ClientHello.legacy_version. Used for RSA pre-master
1242 * secret and SSLv3/TLS (<=1.2) rollback check
1246 * If we're using more than one pipeline how should we divide the data
1247 * up between the pipes?
1249 size_t split_send_fragment
;
1251 * Maximum amount of data to send in one fragment. actual record size can
1252 * be more than this due to padding and MAC overheads.
1254 size_t max_send_fragment
;
1255 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1256 size_t max_pipelines
;
1259 /* Built-in extension flags */
1260 uint8_t extflags
[TLSEXT_IDX_num_builtins
];
1261 /* TLS extension debug callback */
1262 void (*debug_cb
)(SSL
*s
, int client_server
, int type
,
1263 const unsigned char *data
, int len
, void *arg
);
1266 /* certificate status request info */
1267 /* Status type or -1 if no status type */
1269 /* Raw extension data, if seen */
1270 unsigned char *scts
;
1271 /* Length of raw extension data, if seen */
1273 /* Expect OCSP CertificateStatus message */
1274 int status_expected
;
1277 /* OCSP status request only */
1278 STACK_OF(OCSP_RESPID
) *ids
;
1279 X509_EXTENSIONS
*exts
;
1280 /* OCSP response received or to be sent */
1281 unsigned char *resp
;
1285 /* RFC4507 session ticket expected to be received or sent */
1286 int ticket_expected
;
1287 # ifndef OPENSSL_NO_EC
1288 size_t ecpointformats_len
;
1290 unsigned char *ecpointformats
;
1291 # endif /* OPENSSL_NO_EC */
1292 size_t supportedgroups_len
;
1294 uint16_t *supportedgroups
;
1295 /* TLS Session Ticket extension override */
1296 TLS_SESSION_TICKET_EXT
*session_ticket
;
1297 /* TLS Session Ticket extension callback */
1298 tls_session_ticket_ext_cb_fn session_ticket_cb
;
1299 void *session_ticket_cb_arg
;
1300 /* TLS pre-shared secret session resumption */
1301 tls_session_secret_cb_fn session_secret_cb
;
1302 void *session_secret_cb_arg
;
1304 * For a client, this contains the list of supported protocols in wire
1307 unsigned char *alpn
;
1310 * Next protocol negotiation. For the client, this is the protocol that
1311 * we sent in NextProtocol and is set when handling ServerHello
1312 * extensions. For a server, this is the client's selected_protocol from
1313 * NextProtocol and is set when handling the NextProtocol message, before
1314 * the Finished message.
1319 /* The available PSK key exchange modes */
1322 /* Set to one if we have negotiated ETM */
1325 /* Are we expecting to receive early data? */
1327 /* Is the session suitable for early data? */
1330 /* May be sent by a server in HRR. Must be echoed back in ClientHello */
1331 unsigned char *tls13_cookie
;
1332 size_t tls13_cookie_len
;
1333 /* Have we received a cookie from the client? */
1337 * Maximum Fragment Length as per RFC 4366.
1338 * If this member contains one of the allowed values (1-4)
1339 * then we should include Maximum Fragment Length Negotiation
1340 * extension in Client Hello.
1341 * Please note that value of this member does not have direct
1342 * effect. The actual (binding) value is stored in SSL_SESSION,
1343 * as this extension is optional on server side.
1345 uint8_t max_fragment_len_mode
;
1349 * Parsed form of the ClientHello, kept around across client_hello_cb
1352 CLIENTHELLO_MSG
*clienthello
;
1355 * no further mod of servername
1356 * 0 : call the servername extension callback.
1357 * 1 : prepare 2, allow last ack just after in server callback.
1358 * 2 : don't call servername callback, no ack in server hello
1360 int servername_done
;
1361 # ifndef OPENSSL_NO_CT
1363 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1364 * If they are not, the connection should be aborted.
1366 ssl_ct_validation_cb ct_validation_callback
;
1367 /* User-supplied argument that is passed to the ct_validation_callback */
1368 void *ct_validation_callback_arg
;
1370 * Consolidated stack of SCTs from all sources.
1371 * Lazily populated by CT_get_peer_scts(SSL*)
1373 STACK_OF(SCT
) *scts
;
1374 /* Have we attempted to find/parse SCTs yet? */
1377 SSL_CTX
*session_ctx
; /* initial ctx, used to store sessions */
1378 # ifndef OPENSSL_NO_SRTP
1380 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1381 /* What's been chosen */
1382 SRTP_PROTECTION_PROFILE
*srtp_profile
;
1385 * 1 if we are renegotiating.
1386 * 2 if we are a server and are inside a handshake
1387 * (i.e. not just sending a HelloRequest)
1390 /* If sending a KeyUpdate is pending */
1392 /* Post-handshake authentication state */
1393 SSL_PHA_STATE post_handshake_auth
;
1395 uint8_t* pha_context
;
1396 size_t pha_context_len
;
1398 EVP_MD_CTX
*pha_dgst
; /* this is just the digest through ClientFinished */
1400 # ifndef OPENSSL_NO_SRP
1401 /* ctx for SRP authentication */
1405 * Callback for disabling session caching and ticket support on a session
1406 * basis, depending on the chosen cipher.
1408 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1409 RECORD_LAYER rlayer
;
1410 /* Default password callback. */
1411 pem_password_cb
*default_passwd_callback
;
1412 /* Default password callback user data. */
1413 void *default_passwd_callback_userdata
;
1414 /* Async Job info */
1416 ASYNC_WAIT_CTX
*waitctx
;
1420 * The maximum number of bytes advertised in session tickets that can be
1421 * sent as early data.
1423 uint32_t max_early_data
;
1425 * The maximum number of bytes of early data that a server will tolerate
1426 * (which should be at least as much as max_early_data).
1428 uint32_t recv_max_early_data
;
1431 * The number of bytes of early data received so far. If we accepted early
1432 * data then this is a count of the plaintext bytes. If we rejected it then
1433 * this is a count of the ciphertext bytes.
1435 uint32_t early_data_count
;
1437 /* TLS1.3 padding callback */
1438 size_t (*record_padding_cb
)(SSL
*s
, int type
, size_t len
, void *arg
);
1439 void *record_padding_arg
;
1440 size_t block_padding
;
1442 CRYPTO_RWLOCK
*lock
;
1445 /* The number of TLS1.3 tickets to automatically send */
1447 /* The number of TLS1.3 tickets actually sent so far */
1448 size_t sent_tickets
;
1449 /* The next nonce value to use when we send a ticket on this connection */
1450 uint64_t next_ticket_nonce
;
1452 /* Callback to determine if early_data is acceptable or not */
1453 SSL_allow_early_data_cb_fn allow_early_data_cb
;
1454 void *allow_early_data_cb_data
;
1458 * Structure containing table entry of values associated with the signature
1459 * algorithms (signature scheme) extension
1461 typedef struct sigalg_lookup_st
{
1462 /* TLS 1.3 signature scheme name */
1464 /* Raw value used in extension */
1466 /* NID of hash algorithm or NID_undef if no hash */
1468 /* Index of hash algorithm or -1 if no hash algorithm */
1470 /* NID of signature algorithm */
1472 /* Index of signature algorithm */
1474 /* Combined hash and signature NID, if any */
1476 /* Required public key curve (ECDSA only) */
1480 typedef struct tls_group_info_st
{
1481 int nid
; /* Curve NID */
1482 int secbits
; /* Bits of security (from SP800-57) */
1483 uint16_t flags
; /* Flags: currently just group type */
1487 # define TLS_CURVE_TYPE 0x3 /* Mask for group type */
1488 # define TLS_CURVE_PRIME 0x0
1489 # define TLS_CURVE_CHAR2 0x1
1490 # define TLS_CURVE_CUSTOM 0x2
1492 typedef struct cert_pkey_st CERT_PKEY
;
1495 * Structure containing table entry of certificate info corresponding to
1499 int nid
; /* NID of pubic key algorithm */
1500 uint32_t amask
; /* authmask corresponding to key type */
1503 typedef struct ssl3_state_st
{
1505 size_t read_mac_secret_size
;
1506 unsigned char read_mac_secret
[EVP_MAX_MD_SIZE
];
1507 size_t write_mac_secret_size
;
1508 unsigned char write_mac_secret
[EVP_MAX_MD_SIZE
];
1509 unsigned char server_random
[SSL3_RANDOM_SIZE
];
1510 unsigned char client_random
[SSL3_RANDOM_SIZE
];
1511 /* flags for countermeasure against known-IV weakness */
1512 int need_empty_fragments
;
1513 int empty_fragment_done
;
1514 /* used during startup, digest all incoming/outgoing packets */
1515 BIO
*handshake_buffer
;
1517 * When handshake digest is determined, buffer is hashed and
1518 * freed and MD_CTX for the required digest is stored here.
1520 EVP_MD_CTX
*handshake_dgst
;
1522 * Set whenever an expected ChangeCipherSpec message is processed.
1523 * Unset when the peer's Finished message is received.
1524 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1526 int change_cipher_spec
;
1530 * we allow one fatal and one warning alert to be outstanding, send close
1531 * alert via the warning alert
1534 unsigned char send_alert
[2];
1536 * This flag is set when we should renegotiate ASAP, basically when there
1537 * is no more data in the read or write buffers
1540 int total_renegotiations
;
1541 int num_renegotiations
;
1542 int in_read_app_data
;
1544 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1545 unsigned char finish_md
[EVP_MAX_MD_SIZE
* 2];
1546 size_t finish_md_len
;
1547 unsigned char peer_finish_md
[EVP_MAX_MD_SIZE
* 2];
1548 size_t peer_finish_md_len
;
1549 size_t message_size
;
1551 /* used to hold the new cipher we are going to use */
1552 const SSL_CIPHER
*new_cipher
;
1553 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1554 EVP_PKEY
*pkey
; /* holds short lived DH/ECDH key */
1556 /* used for certificate requests */
1558 /* Certificate types in certificate request message. */
1561 /* Certificate authorities list peer sent */
1562 STACK_OF(X509_NAME
) *peer_ca_names
;
1563 size_t key_block_length
;
1564 unsigned char *key_block
;
1565 const EVP_CIPHER
*new_sym_enc
;
1566 const EVP_MD
*new_hash
;
1567 int new_mac_pkey_type
;
1568 size_t new_mac_secret_size
;
1569 # ifndef OPENSSL_NO_COMP
1570 const SSL_COMP
*new_compression
;
1572 char *new_compression
;
1575 /* Raw values of the cipher list from a client */
1576 unsigned char *ciphers_raw
;
1577 size_t ciphers_rawlen
;
1578 /* Temporary storage for premaster secret */
1581 # ifndef OPENSSL_NO_PSK
1582 /* Temporary storage for PSK key */
1586 /* Signature algorithm we actually use */
1587 const SIGALG_LOOKUP
*sigalg
;
1588 /* Pointer to certificate we use */
1591 * signature algorithms peer reports: e.g. supported signature
1592 * algorithms extension for server or as part of a certificate
1593 * request for client.
1594 * Keep track of the algorithms for TLS and X.509 usage separately.
1596 uint16_t *peer_sigalgs
;
1597 uint16_t *peer_cert_sigalgs
;
1598 /* Size of above arrays */
1599 size_t peer_sigalgslen
;
1600 size_t peer_cert_sigalgslen
;
1601 /* Sigalg peer actually uses */
1602 const SIGALG_LOOKUP
*peer_sigalg
;
1604 * Set if corresponding CERT_PKEY can be used with current
1605 * SSL session: e.g. appropriate curve, signature algorithms etc.
1606 * If zero it can't be used at all.
1608 uint32_t valid_flags
[SSL_PKEY_NUM
];
1610 * For servers the following masks are for the key and auth algorithms
1611 * that are supported by the certs below. For clients they are masks of
1612 * *disabled* algorithms based on the current session.
1617 * The following are used by the client to see if a cipher is allowed or
1618 * not. It contains the minimum and maximum version the client's using
1619 * based on what it knows so far.
1625 /* Connection binding to prevent renegotiation attacks */
1626 unsigned char previous_client_finished
[EVP_MAX_MD_SIZE
];
1627 size_t previous_client_finished_len
;
1628 unsigned char previous_server_finished
[EVP_MAX_MD_SIZE
];
1629 size_t previous_server_finished_len
;
1630 int send_connection_binding
; /* TODOEKR */
1632 # ifndef OPENSSL_NO_NEXTPROTONEG
1634 * Set if we saw the Next Protocol Negotiation extension from our peer.
1640 * ALPN information (we are in the process of transitioning from NPN to
1645 * In a server these point to the selected ALPN protocol after the
1646 * ClientHello has been processed. In a client these contain the protocol
1647 * that the server selected once the ServerHello has been processed.
1649 unsigned char *alpn_selected
;
1650 size_t alpn_selected_len
;
1651 /* used by the server to know what options were proposed */
1652 unsigned char *alpn_proposed
;
1653 size_t alpn_proposed_len
;
1654 /* used by the client to know if it actually sent alpn */
1657 # ifndef OPENSSL_NO_EC
1659 * This is set to true if we believe that this is a version of Safari
1660 * running on OS X 10.6 or newer. We wish to know this because Safari on
1661 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1663 char is_probably_safari
;
1664 # endif /* !OPENSSL_NO_EC */
1666 /* For clients: peer temporary key */
1667 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1668 /* The group_id for the DH/ECDH key */
1675 /* DTLS structures */
1677 # ifndef OPENSSL_NO_SCTP
1678 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1681 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1682 # define DTLS1_MAX_MTU_OVERHEAD 48
1685 * Flag used in message reuse to indicate the buffer contains the record
1686 * header as well as the handshake message header.
1688 # define DTLS1_SKIP_RECORD_HEADER 2
1690 struct dtls1_retransmit_state
{
1691 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1692 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1693 COMP_CTX
*compress
; /* compression */
1694 SSL_SESSION
*session
;
1695 unsigned short epoch
;
1698 struct hm_header_st
{
1704 unsigned int is_ccs
;
1705 struct dtls1_retransmit_state saved_retransmit_state
;
1708 struct dtls1_timeout_st
{
1709 /* Number of read timeouts so far */
1710 unsigned int read_timeouts
;
1711 /* Number of write timeouts so far */
1712 unsigned int write_timeouts
;
1713 /* Number of alerts received so far */
1714 unsigned int num_alerts
;
1717 typedef struct hm_fragment_st
{
1718 struct hm_header_st msg_header
;
1719 unsigned char *fragment
;
1720 unsigned char *reassembly
;
1723 typedef struct pqueue_st pqueue
;
1724 typedef struct pitem_st pitem
;
1727 unsigned char priority
[8]; /* 64-bit value in big-endian encoding */
1732 typedef struct pitem_st
*piterator
;
1734 pitem
*pitem_new(unsigned char *prio64be
, void *data
);
1735 void pitem_free(pitem
*item
);
1736 pqueue
*pqueue_new(void);
1737 void pqueue_free(pqueue
*pq
);
1738 pitem
*pqueue_insert(pqueue
*pq
, pitem
*item
);
1739 pitem
*pqueue_peek(pqueue
*pq
);
1740 pitem
*pqueue_pop(pqueue
*pq
);
1741 pitem
*pqueue_find(pqueue
*pq
, unsigned char *prio64be
);
1742 pitem
*pqueue_iterator(pqueue
*pq
);
1743 pitem
*pqueue_next(piterator
*iter
);
1744 size_t pqueue_size(pqueue
*pq
);
1746 typedef struct dtls1_state_st
{
1747 unsigned char cookie
[DTLS1_COOKIE_LENGTH
];
1749 unsigned int cookie_verified
;
1750 /* handshake message numbers */
1751 unsigned short handshake_write_seq
;
1752 unsigned short next_handshake_write_seq
;
1753 unsigned short handshake_read_seq
;
1754 /* Buffered handshake messages */
1755 pqueue
*buffered_messages
;
1756 /* Buffered (sent) handshake records */
1757 pqueue
*sent_messages
;
1758 size_t link_mtu
; /* max on-the-wire DTLS packet size */
1759 size_t mtu
; /* max DTLS packet size */
1760 struct hm_header_st w_msg_hdr
;
1761 struct hm_header_st r_msg_hdr
;
1762 struct dtls1_timeout_st timeout
;
1764 * Indicates when the last handshake msg sent will timeout
1766 struct timeval next_timeout
;
1767 /* Timeout duration */
1768 unsigned int timeout_duration_us
;
1770 unsigned int retransmitting
;
1771 # ifndef OPENSSL_NO_SCTP
1772 int shutdown_received
;
1775 DTLS_timer_cb timer_cb
;
1779 # ifndef OPENSSL_NO_EC
1781 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1783 # define EXPLICIT_PRIME_CURVE_TYPE 1
1784 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1785 # define NAMED_CURVE_TYPE 3
1786 # endif /* OPENSSL_NO_EC */
1788 struct cert_pkey_st
{
1790 EVP_PKEY
*privatekey
;
1791 /* Chain for this certificate */
1792 STACK_OF(X509
) *chain
;
1794 * serverinfo data for this certificate. The data is in TLS Extension
1795 * wire format, specifically it's a series of records like:
1796 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1798 * uint8_t data[length];
1800 unsigned char *serverinfo
;
1801 size_t serverinfo_length
;
1803 /* Retrieve Suite B flags */
1804 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1805 /* Uses to check strict mode: suite B modes are always strict */
1806 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1807 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1810 ENDPOINT_CLIENT
= 0,
1817 unsigned short ext_type
;
1819 /* The context which this extension applies to */
1820 unsigned int context
;
1822 * Per-connection flags relating to this extension type: not used if
1823 * part of an SSL_CTX structure.
1826 SSL_custom_ext_add_cb_ex add_cb
;
1827 SSL_custom_ext_free_cb_ex free_cb
;
1829 SSL_custom_ext_parse_cb_ex parse_cb
;
1831 } custom_ext_method
;
1833 /* ext_flags values */
1836 * Indicates an extension has been received. Used to check for unsolicited or
1837 * duplicate extensions.
1839 # define SSL_EXT_FLAG_RECEIVED 0x1
1841 * Indicates an extension has been sent: used to enable sending of
1842 * corresponding ServerHello extension.
1844 # define SSL_EXT_FLAG_SENT 0x2
1847 custom_ext_method
*meths
;
1849 } custom_ext_methods
;
1851 typedef struct cert_st
{
1852 /* Current active set */
1854 * ALWAYS points to an element of the pkeys array
1855 * Probably it would make more sense to store
1856 * an index, not a pointer.
1859 # ifndef OPENSSL_NO_DH
1861 DH
*(*dh_tmp_cb
) (SSL
*ssl
, int is_export
, int keysize
);
1864 /* Flags related to certificates */
1865 uint32_t cert_flags
;
1866 CERT_PKEY pkeys
[SSL_PKEY_NUM
];
1867 /* Custom certificate types sent in certificate request message. */
1871 * supported signature algorithms. When set on a client this is sent in
1872 * the client hello as the supported signature algorithms extension. For
1873 * servers it represents the signature algorithms we are willing to use.
1875 uint16_t *conf_sigalgs
;
1876 /* Size of above array */
1877 size_t conf_sigalgslen
;
1879 * Client authentication signature algorithms, if not set then uses
1880 * conf_sigalgs. On servers these will be the signature algorithms sent
1881 * to the client in a certificate request for TLS 1.2. On a client this
1882 * represents the signature algorithms we are willing to use for client
1885 uint16_t *client_sigalgs
;
1886 /* Size of above array */
1887 size_t client_sigalgslen
;
1889 * Signature algorithms shared by client and server: cached because these
1890 * are used most often.
1892 const SIGALG_LOOKUP
**shared_sigalgs
;
1893 size_t shared_sigalgslen
;
1895 * Certificate setup callback: if set is called whenever a certificate
1896 * may be required (client or server). the callback can then examine any
1897 * appropriate parameters and setup any certificates required. This
1898 * allows advanced applications to select certificates on the fly: for
1899 * example based on supported signature algorithms or curves.
1901 int (*cert_cb
) (SSL
*ssl
, void *arg
);
1904 * Optional X509_STORE for chain building or certificate validation If
1905 * NULL the parent SSL_CTX store is used instead.
1907 X509_STORE
*chain_store
;
1908 X509_STORE
*verify_store
;
1909 /* Custom extensions */
1910 custom_ext_methods custext
;
1911 /* Security callback */
1912 int (*sec_cb
) (const SSL
*s
, const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
1913 void *other
, void *ex
);
1914 /* Security level */
1917 # ifndef OPENSSL_NO_PSK
1918 /* If not NULL psk identity hint to use for servers */
1919 char *psk_identity_hint
;
1921 CRYPTO_REF_COUNT references
; /* >1 only if SSL_copy_session_id is used */
1922 CRYPTO_RWLOCK
*lock
;
1925 # define FP_ICC (int (*)(const void *,const void *))
1928 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1929 * of a mess of functions, but hell, think of it as an opaque structure :-)
1931 typedef struct ssl3_enc_method
{
1932 int (*enc
) (SSL
*, SSL3_RECORD
*, size_t, int);
1933 int (*mac
) (SSL
*, SSL3_RECORD
*, unsigned char *, int);
1934 int (*setup_key_block
) (SSL
*);
1935 int (*generate_master_secret
) (SSL
*, unsigned char *, unsigned char *,
1937 int (*change_cipher_state
) (SSL
*, int);
1938 size_t (*final_finish_mac
) (SSL
*, const char *, size_t, unsigned char *);
1939 const char *client_finished_label
;
1940 size_t client_finished_label_len
;
1941 const char *server_finished_label
;
1942 size_t server_finished_label_len
;
1943 int (*alert_value
) (int);
1944 int (*export_keying_material
) (SSL
*, unsigned char *, size_t,
1945 const char *, size_t,
1946 const unsigned char *, size_t,
1948 /* Various flags indicating protocol version requirements */
1950 /* Set the handshake header */
1951 int (*set_handshake_header
) (SSL
*s
, WPACKET
*pkt
, int type
);
1952 /* Close construction of the handshake message */
1953 int (*close_construct_packet
) (SSL
*s
, WPACKET
*pkt
, int htype
);
1954 /* Write out handshake message */
1955 int (*do_write
) (SSL
*s
);
1958 # define ssl_set_handshake_header(s, pkt, htype) \
1959 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
1960 # define ssl_close_construct_packet(s, pkt, htype) \
1961 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
1962 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1964 /* Values for enc_flags */
1966 /* Uses explicit IV for CBC mode */
1967 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1968 /* Uses signature algorithms extension */
1969 # define SSL_ENC_FLAG_SIGALGS 0x2
1970 /* Uses SHA256 default PRF */
1971 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1973 # define SSL_ENC_FLAG_DTLS 0x8
1975 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1976 * apply to others in future.
1978 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1980 # ifndef OPENSSL_NO_COMP
1981 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1982 typedef struct ssl3_comp_st
{
1983 int comp_id
; /* The identifier byte for this compression
1985 char *name
; /* Text name used for the compression type */
1986 COMP_METHOD
*method
; /* The method :-) */
1990 typedef enum downgrade_en
{
1997 * Dummy status type for the status_type extension. Indicates no status type
2000 #define TLSEXT_STATUSTYPE_nothing -1
2002 /* Sigalgs values */
2003 #define TLSEXT_SIGALG_ecdsa_secp256r1_sha256 0x0403
2004 #define TLSEXT_SIGALG_ecdsa_secp384r1_sha384 0x0503
2005 #define TLSEXT_SIGALG_ecdsa_secp521r1_sha512 0x0603
2006 #define TLSEXT_SIGALG_ecdsa_sha224 0x0303
2007 #define TLSEXT_SIGALG_ecdsa_sha1 0x0203
2008 #define TLSEXT_SIGALG_rsa_pss_rsae_sha256 0x0804
2009 #define TLSEXT_SIGALG_rsa_pss_rsae_sha384 0x0805
2010 #define TLSEXT_SIGALG_rsa_pss_rsae_sha512 0x0806
2011 #define TLSEXT_SIGALG_rsa_pss_pss_sha256 0x0809
2012 #define TLSEXT_SIGALG_rsa_pss_pss_sha384 0x080a
2013 #define TLSEXT_SIGALG_rsa_pss_pss_sha512 0x080b
2014 #define TLSEXT_SIGALG_rsa_pkcs1_sha256 0x0401
2015 #define TLSEXT_SIGALG_rsa_pkcs1_sha384 0x0501
2016 #define TLSEXT_SIGALG_rsa_pkcs1_sha512 0x0601
2017 #define TLSEXT_SIGALG_rsa_pkcs1_sha224 0x0301
2018 #define TLSEXT_SIGALG_rsa_pkcs1_sha1 0x0201
2019 #define TLSEXT_SIGALG_dsa_sha256 0x0402
2020 #define TLSEXT_SIGALG_dsa_sha384 0x0502
2021 #define TLSEXT_SIGALG_dsa_sha512 0x0602
2022 #define TLSEXT_SIGALG_dsa_sha224 0x0302
2023 #define TLSEXT_SIGALG_dsa_sha1 0x0202
2024 #define TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 0xeeee
2025 #define TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 0xefef
2026 #define TLSEXT_SIGALG_gostr34102001_gostr3411 0xeded
2028 #define TLSEXT_SIGALG_ed25519 0x0807
2029 #define TLSEXT_SIGALG_ed448 0x0808
2031 /* Known PSK key exchange modes */
2032 #define TLSEXT_KEX_MODE_KE 0x00
2033 #define TLSEXT_KEX_MODE_KE_DHE 0x01
2036 * Internal representations of key exchange modes
2038 #define TLSEXT_KEX_MODE_FLAG_NONE 0
2039 #define TLSEXT_KEX_MODE_FLAG_KE 1
2040 #define TLSEXT_KEX_MODE_FLAG_KE_DHE 2
2042 /* An invalid index into the TLSv1.3 PSK identities */
2043 #define TLSEXT_PSK_BAD_IDENTITY -1
2045 #define SSL_USE_PSS(s) (s->s3->tmp.peer_sigalg != NULL && \
2046 s->s3->tmp.peer_sigalg->sig == EVP_PKEY_RSA_PSS)
2048 /* A dummy signature value not valid for TLSv1.2 signature algs */
2049 #define TLSEXT_signature_rsa_pss 0x0101
2051 /* TLSv1.3 downgrade protection sentinel values */
2052 extern const unsigned char tls11downgrade
[8];
2053 extern const unsigned char tls12downgrade
[8];
2055 extern SSL3_ENC_METHOD ssl3_undef_enc_method
;
2057 __owur
const SSL_METHOD
*ssl_bad_method(int ver
);
2058 __owur
const SSL_METHOD
*sslv3_method(void);
2059 __owur
const SSL_METHOD
*sslv3_server_method(void);
2060 __owur
const SSL_METHOD
*sslv3_client_method(void);
2061 __owur
const SSL_METHOD
*tlsv1_method(void);
2062 __owur
const SSL_METHOD
*tlsv1_server_method(void);
2063 __owur
const SSL_METHOD
*tlsv1_client_method(void);
2064 __owur
const SSL_METHOD
*tlsv1_1_method(void);
2065 __owur
const SSL_METHOD
*tlsv1_1_server_method(void);
2066 __owur
const SSL_METHOD
*tlsv1_1_client_method(void);
2067 __owur
const SSL_METHOD
*tlsv1_2_method(void);
2068 __owur
const SSL_METHOD
*tlsv1_2_server_method(void);
2069 __owur
const SSL_METHOD
*tlsv1_2_client_method(void);
2070 __owur
const SSL_METHOD
*tlsv1_3_method(void);
2071 __owur
const SSL_METHOD
*tlsv1_3_server_method(void);
2072 __owur
const SSL_METHOD
*tlsv1_3_client_method(void);
2073 __owur
const SSL_METHOD
*dtlsv1_method(void);
2074 __owur
const SSL_METHOD
*dtlsv1_server_method(void);
2075 __owur
const SSL_METHOD
*dtlsv1_client_method(void);
2076 __owur
const SSL_METHOD
*dtls_bad_ver_client_method(void);
2077 __owur
const SSL_METHOD
*dtlsv1_2_method(void);
2078 __owur
const SSL_METHOD
*dtlsv1_2_server_method(void);
2079 __owur
const SSL_METHOD
*dtlsv1_2_client_method(void);
2081 extern const SSL3_ENC_METHOD TLSv1_enc_data
;
2082 extern const SSL3_ENC_METHOD TLSv1_1_enc_data
;
2083 extern const SSL3_ENC_METHOD TLSv1_2_enc_data
;
2084 extern const SSL3_ENC_METHOD TLSv1_3_enc_data
;
2085 extern const SSL3_ENC_METHOD SSLv3_enc_data
;
2086 extern const SSL3_ENC_METHOD DTLSv1_enc_data
;
2087 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data
;
2090 * Flags for SSL methods
2092 # define SSL_METHOD_NO_FIPS (1U<<0)
2093 # define SSL_METHOD_NO_SUITEB (1U<<1)
2095 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
2096 s_connect, enc_data) \
2097 const SSL_METHOD *func_name(void) \
2099 static const SSL_METHOD func_name##_data= { \
2113 ssl3_renegotiate_check, \
2116 ssl3_dispatch_alert, \
2119 ssl3_get_cipher_by_char, \
2120 ssl3_put_cipher_by_char, \
2124 tls1_default_timeout, \
2126 ssl_undefined_void_function, \
2127 ssl3_callback_ctrl, \
2128 ssl3_ctx_callback_ctrl, \
2130 return &func_name##_data; \
2133 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
2134 const SSL_METHOD *func_name(void) \
2136 static const SSL_METHOD func_name##_data= { \
2138 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
2150 ssl3_renegotiate_check, \
2153 ssl3_dispatch_alert, \
2156 ssl3_get_cipher_by_char, \
2157 ssl3_put_cipher_by_char, \
2161 ssl3_default_timeout, \
2163 ssl_undefined_void_function, \
2164 ssl3_callback_ctrl, \
2165 ssl3_ctx_callback_ctrl, \
2167 return &func_name##_data; \
2170 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
2171 s_connect, enc_data) \
2172 const SSL_METHOD *func_name(void) \
2174 static const SSL_METHOD func_name##_data= { \
2188 ssl3_renegotiate_check, \
2190 dtls1_write_app_data_bytes, \
2191 dtls1_dispatch_alert, \
2194 ssl3_get_cipher_by_char, \
2195 ssl3_put_cipher_by_char, \
2199 dtls1_default_timeout, \
2201 ssl_undefined_void_function, \
2202 ssl3_callback_ctrl, \
2203 ssl3_ctx_callback_ctrl, \
2205 return &func_name##_data; \
2208 struct openssl_ssl_test_functions
{
2209 int (*p_ssl_init_wbio_buffer
) (SSL
*s
);
2210 int (*p_ssl3_setup_buffers
) (SSL
*s
);
2213 const char *ssl_protocol_to_string(int version
);
2215 /* Returns true if certificate and private key for 'idx' are present */
2216 static ossl_inline
int ssl_has_cert(const SSL
*s
, int idx
)
2218 if (idx
< 0 || idx
>= SSL_PKEY_NUM
)
2220 return s
->cert
->pkeys
[idx
].x509
!= NULL
2221 && s
->cert
->pkeys
[idx
].privatekey
!= NULL
;
2224 static ossl_inline
void tls1_get_peer_groups(SSL
*s
, const uint16_t **pgroups
,
2227 *pgroups
= s
->session
->ext
.supportedgroups
;
2228 *pgroupslen
= s
->session
->ext
.supportedgroups_len
;
2231 # ifndef OPENSSL_UNIT_TEST
2233 __owur
int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
);
2234 __owur
int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
);
2235 void ssl_clear_cipher_ctx(SSL
*s
);
2236 int ssl_clear_bad_session(SSL
*s
);
2237 __owur CERT
*ssl_cert_new(void);
2238 __owur CERT
*ssl_cert_dup(CERT
*cert
);
2239 void ssl_cert_clear_certs(CERT
*c
);
2240 void ssl_cert_free(CERT
*c
);
2241 __owur
int ssl_generate_session_id(SSL
*s
, SSL_SESSION
*ss
);
2242 __owur
int ssl_get_new_session(SSL
*s
, int session
);
2243 __owur SSL_SESSION
*lookup_sess_in_cache(SSL
*s
, const unsigned char *sess_id
,
2244 size_t sess_id_len
);
2245 __owur
int ssl_get_prev_session(SSL
*s
, CLIENTHELLO_MSG
*hello
);
2246 __owur SSL_SESSION
*ssl_session_dup(SSL_SESSION
*src
, int ticket
);
2247 __owur
int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
);
2248 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
2249 __owur
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2250 const SSL_CIPHER
*const *bp
);
2251 __owur
int set_ciphersuites(STACK_OF(SSL_CIPHER
) **currciphers
, const char *str
);
2252 __owur
STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*ssl_method
,
2253 STACK_OF(SSL_CIPHER
) *tls13_ciphersuites
,
2254 STACK_OF(SSL_CIPHER
) **cipher_list
,
2255 STACK_OF(SSL_CIPHER
) **cipher_list_by_id
,
2256 const char *rule_str
,
2258 __owur
int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
);
2259 __owur
int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
2260 STACK_OF(SSL_CIPHER
) **skp
,
2261 STACK_OF(SSL_CIPHER
) **scsvs
, int sslv2format
,
2263 void ssl_update_cache(SSL
*s
, int mode
);
2264 __owur
int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
2265 const EVP_MD
**md
, int *mac_pkey_type
,
2266 size_t *mac_secret_size
, SSL_COMP
**comp
,
2268 __owur
int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
2269 size_t *int_overhead
, size_t *blocksize
,
2270 size_t *ext_overhead
);
2271 __owur
int ssl_cert_is_disabled(size_t idx
);
2272 __owur
const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
,
2273 const unsigned char *ptr
,
2275 __owur
int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
2276 __owur
int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
2277 __owur
int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
2278 __owur
int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
2279 __owur
int ssl_cert_select_current(CERT
*c
, X509
*x
);
2280 __owur
int ssl_cert_set_current(CERT
*c
, long arg
);
2281 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
);
2283 __owur
int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
);
2284 __owur
int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
);
2285 __owur
int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
,
2288 __owur
int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
);
2289 __owur
int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
2292 __owur
int ssl_cert_lookup_by_nid(int nid
, size_t *pidx
);
2293 __owur
const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_pkey(const EVP_PKEY
*pk
,
2295 __owur
const SSL_CERT_LOOKUP
*ssl_cert_lookup_by_idx(size_t idx
);
2297 int ssl_undefined_function(SSL
*s
);
2298 __owur
int ssl_undefined_void_function(void);
2299 __owur
int ssl_undefined_const_function(const SSL
*s
);
2300 __owur
int ssl_get_server_cert_serverinfo(SSL
*s
,
2301 const unsigned char **serverinfo
,
2302 size_t *serverinfo_length
);
2303 void ssl_set_masks(SSL
*s
);
2304 __owur
STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
);
2305 __owur
int ssl_x509err2alert(int type
);
2306 void ssl_sort_cipher_list(void);
2307 int ssl_load_ciphers(void);
2308 __owur
int ssl_fill_hello_random(SSL
*s
, int server
, unsigned char *field
,
2309 size_t len
, DOWNGRADE dgrd
);
2310 __owur
int ssl_generate_master_secret(SSL
*s
, unsigned char *pms
, size_t pmslen
,
2312 __owur EVP_PKEY
*ssl_generate_pkey(EVP_PKEY
*pm
);
2313 __owur
int ssl_derive(SSL
*s
, EVP_PKEY
*privkey
, EVP_PKEY
*pubkey
,
2315 __owur EVP_PKEY
*ssl_dh_to_pkey(DH
*dh
);
2316 __owur
unsigned int ssl_get_max_send_fragment(const SSL
*ssl
);
2317 __owur
unsigned int ssl_get_split_send_fragment(const SSL
*ssl
);
2319 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_id(uint32_t id
);
2320 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_std_name(const char *stdname
);
2321 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_char(const unsigned char *p
);
2322 __owur
int ssl3_put_cipher_by_char(const SSL_CIPHER
*c
, WPACKET
*pkt
,
2324 int ssl3_init_finished_mac(SSL
*s
);
2325 __owur
int ssl3_setup_key_block(SSL
*s
);
2326 __owur
int ssl3_change_cipher_state(SSL
*s
, int which
);
2327 void ssl3_cleanup_key_block(SSL
*s
);
2328 __owur
int ssl3_do_write(SSL
*s
, int type
);
2329 int ssl3_send_alert(SSL
*s
, int level
, int desc
);
2330 __owur
int ssl3_generate_master_secret(SSL
*s
, unsigned char *out
,
2331 unsigned char *p
, size_t len
,
2332 size_t *secret_size
);
2333 __owur
int ssl3_get_req_cert_type(SSL
*s
, WPACKET
*pkt
);
2334 __owur
int ssl3_num_ciphers(void);
2335 __owur
const SSL_CIPHER
*ssl3_get_cipher(unsigned int u
);
2336 int ssl3_renegotiate(SSL
*ssl
);
2337 int ssl3_renegotiate_check(SSL
*ssl
, int initok
);
2338 __owur
int ssl3_dispatch_alert(SSL
*s
);
2339 __owur
size_t ssl3_final_finish_mac(SSL
*s
, const char *sender
, size_t slen
,
2341 __owur
int ssl3_finish_mac(SSL
*s
, const unsigned char *buf
, size_t len
);
2342 void ssl3_free_digest_list(SSL
*s
);
2343 __owur
unsigned long ssl3_output_cert_chain(SSL
*s
, WPACKET
*pkt
,
2345 __owur
const SSL_CIPHER
*ssl3_choose_cipher(SSL
*ssl
,
2346 STACK_OF(SSL_CIPHER
) *clnt
,
2347 STACK_OF(SSL_CIPHER
) *srvr
);
2348 __owur
int ssl3_digest_cached_records(SSL
*s
, int keep
);
2349 __owur
int ssl3_new(SSL
*s
);
2350 void ssl3_free(SSL
*s
);
2351 __owur
int ssl3_read(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
2352 __owur
int ssl3_peek(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
2353 __owur
int ssl3_write(SSL
*s
, const void *buf
, size_t len
, size_t *written
);
2354 __owur
int ssl3_shutdown(SSL
*s
);
2355 int ssl3_clear(SSL
*s
);
2356 __owur
long ssl3_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
2357 __owur
long ssl3_ctx_ctrl(SSL_CTX
*s
, int cmd
, long larg
, void *parg
);
2358 __owur
long ssl3_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void));
2359 __owur
long ssl3_ctx_callback_ctrl(SSL_CTX
*s
, int cmd
, void (*fp
) (void));
2361 __owur
int ssl3_do_change_cipher_spec(SSL
*ssl
);
2362 __owur
long ssl3_default_timeout(void);
2364 __owur
int ssl3_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
2365 __owur
int tls_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
2366 __owur
int tls_setup_handshake(SSL
*s
);
2367 __owur
int dtls1_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
2368 __owur
int dtls1_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
2369 __owur
int ssl3_handshake_write(SSL
*s
);
2371 __owur
int ssl_allow_compression(SSL
*s
);
2373 __owur
int ssl_version_supported(const SSL
*s
, int version
,
2374 const SSL_METHOD
**meth
);
2376 __owur
int ssl_set_client_hello_version(SSL
*s
);
2377 __owur
int ssl_check_version_downgrade(SSL
*s
);
2378 __owur
int ssl_set_version_bound(int method_version
, int version
, int *bound
);
2379 __owur
int ssl_choose_server_version(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2381 __owur
int ssl_choose_client_version(SSL
*s
, int version
,
2382 RAW_EXTENSION
*extensions
);
2383 __owur
int ssl_get_min_max_version(const SSL
*s
, int *min_version
,
2386 __owur
long tls1_default_timeout(void);
2387 __owur
int dtls1_do_write(SSL
*s
, int type
);
2388 void dtls1_set_message_header(SSL
*s
,
2391 size_t frag_off
, size_t frag_len
);
2393 int dtls1_write_app_data_bytes(SSL
*s
, int type
, const void *buf_
, size_t len
,
2396 __owur
int dtls1_read_failed(SSL
*s
, int code
);
2397 __owur
int dtls1_buffer_message(SSL
*s
, int ccs
);
2398 __owur
int dtls1_retransmit_message(SSL
*s
, unsigned short seq
, int *found
);
2399 __owur
int dtls1_get_queue_priority(unsigned short seq
, int is_ccs
);
2400 int dtls1_retransmit_buffered_messages(SSL
*s
);
2401 void dtls1_clear_received_buffer(SSL
*s
);
2402 void dtls1_clear_sent_buffer(SSL
*s
);
2403 void dtls1_get_message_header(unsigned char *data
,
2404 struct hm_header_st
*msg_hdr
);
2405 __owur
long dtls1_default_timeout(void);
2406 __owur
struct timeval
*dtls1_get_timeout(SSL
*s
, struct timeval
*timeleft
);
2407 __owur
int dtls1_check_timeout_num(SSL
*s
);
2408 __owur
int dtls1_handle_timeout(SSL
*s
);
2409 void dtls1_start_timer(SSL
*s
);
2410 void dtls1_stop_timer(SSL
*s
);
2411 __owur
int dtls1_is_timer_expired(SSL
*s
);
2412 void dtls1_double_timeout(SSL
*s
);
2413 __owur
int dtls_raw_hello_verify_request(WPACKET
*pkt
, unsigned char *cookie
,
2415 __owur
size_t dtls1_min_mtu(SSL
*s
);
2416 void dtls1_hm_fragment_free(hm_fragment
*frag
);
2417 __owur
int dtls1_query_mtu(SSL
*s
);
2419 __owur
int tls1_new(SSL
*s
);
2420 void tls1_free(SSL
*s
);
2421 int tls1_clear(SSL
*s
);
2423 __owur
int dtls1_new(SSL
*s
);
2424 void dtls1_free(SSL
*s
);
2425 int dtls1_clear(SSL
*s
);
2426 long dtls1_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
2427 __owur
int dtls1_shutdown(SSL
*s
);
2429 __owur
int dtls1_dispatch_alert(SSL
*s
);
2431 __owur
int ssl_init_wbio_buffer(SSL
*s
);
2432 int ssl_free_wbio_buffer(SSL
*s
);
2434 __owur
int tls1_change_cipher_state(SSL
*s
, int which
);
2435 __owur
int tls1_setup_key_block(SSL
*s
);
2436 __owur
size_t tls1_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2438 __owur
int tls1_generate_master_secret(SSL
*s
, unsigned char *out
,
2439 unsigned char *p
, size_t len
,
2440 size_t *secret_size
);
2441 __owur
int tls13_setup_key_block(SSL
*s
);
2442 __owur
size_t tls13_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2444 __owur
int tls13_change_cipher_state(SSL
*s
, int which
);
2445 __owur
int tls13_update_key(SSL
*s
, int send
);
2446 __owur
int tls13_hkdf_expand(SSL
*s
, const EVP_MD
*md
,
2447 const unsigned char *secret
,
2448 const unsigned char *label
, size_t labellen
,
2449 const unsigned char *data
, size_t datalen
,
2450 unsigned char *out
, size_t outlen
);
2451 __owur
int tls13_derive_key(SSL
*s
, const EVP_MD
*md
,
2452 const unsigned char *secret
, unsigned char *key
,
2454 __owur
int tls13_derive_iv(SSL
*s
, const EVP_MD
*md
,
2455 const unsigned char *secret
, unsigned char *iv
,
2457 __owur
int tls13_derive_finishedkey(SSL
*s
, const EVP_MD
*md
,
2458 const unsigned char *secret
,
2459 unsigned char *fin
, size_t finlen
);
2460 int tls13_generate_secret(SSL
*s
, const EVP_MD
*md
,
2461 const unsigned char *prevsecret
,
2462 const unsigned char *insecret
,
2464 unsigned char *outsecret
);
2465 __owur
int tls13_generate_handshake_secret(SSL
*s
,
2466 const unsigned char *insecret
,
2467 size_t insecretlen
);
2468 __owur
int tls13_generate_master_secret(SSL
*s
, unsigned char *out
,
2469 unsigned char *prev
, size_t prevlen
,
2470 size_t *secret_size
);
2471 __owur
int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2472 const char *label
, size_t llen
,
2473 const unsigned char *p
, size_t plen
,
2475 __owur
int tls13_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2476 const char *label
, size_t llen
,
2477 const unsigned char *context
,
2478 size_t contextlen
, int use_context
);
2479 __owur
int tls13_export_keying_material_early(SSL
*s
, unsigned char *out
,
2480 size_t olen
, const char *label
,
2482 const unsigned char *context
,
2484 __owur
int tls1_alert_code(int code
);
2485 __owur
int tls13_alert_code(int code
);
2486 __owur
int ssl3_alert_code(int code
);
2488 # ifndef OPENSSL_NO_EC
2489 __owur
int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
);
2492 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
);
2494 # ifndef OPENSSL_NO_EC
2496 __owur
const TLS_GROUP_INFO
*tls1_group_id_lookup(uint16_t curve_id
);
2497 __owur
int tls1_check_group_id(SSL
*s
, uint16_t group_id
, int check_own_curves
);
2498 __owur
uint16_t tls1_shared_group(SSL
*s
, int nmatch
);
2499 __owur
int tls1_set_groups(uint16_t **pext
, size_t *pextlen
,
2500 int *curves
, size_t ncurves
);
2501 __owur
int tls1_set_groups_list(uint16_t **pext
, size_t *pextlen
,
2503 void tls1_get_formatlist(SSL
*s
, const unsigned char **pformats
,
2504 size_t *num_formats
);
2505 __owur
int tls1_check_ec_tmp_key(SSL
*s
, unsigned long id
);
2506 __owur EVP_PKEY
*ssl_generate_pkey_group(SSL
*s
, uint16_t id
);
2507 __owur EVP_PKEY
*ssl_generate_param_group(uint16_t id
);
2508 # endif /* OPENSSL_NO_EC */
2510 __owur
int tls_curve_allowed(SSL
*s
, uint16_t curve
, int op
);
2511 void tls1_get_supported_groups(SSL
*s
, const uint16_t **pgroups
,
2512 size_t *pgroupslen
);
2514 __owur
int tls1_set_server_sigalgs(SSL
*s
);
2516 __owur SSL_TICKET_STATUS
tls_get_ticket_from_client(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2518 __owur SSL_TICKET_STATUS
tls_decrypt_ticket(SSL
*s
, const unsigned char *etick
,
2520 const unsigned char *sess_id
,
2521 size_t sesslen
, SSL_SESSION
**psess
);
2523 __owur
int tls_use_ticket(SSL
*s
);
2525 void ssl_set_sig_mask(uint32_t *pmask_a
, SSL
*s
, int op
);
2527 __owur
int tls1_set_sigalgs_list(CERT
*c
, const char *str
, int client
);
2528 __owur
int tls1_set_raw_sigalgs(CERT
*c
, const uint16_t *psigs
, size_t salglen
,
2530 __owur
int tls1_set_sigalgs(CERT
*c
, const int *salg
, size_t salglen
,
2532 int tls1_check_chain(SSL
*s
, X509
*x
, EVP_PKEY
*pk
, STACK_OF(X509
) *chain
,
2534 void tls1_set_cert_validity(SSL
*s
);
2536 # ifndef OPENSSL_NO_CT
2537 __owur
int ssl_validate_ct(SSL
*s
);
2540 # ifndef OPENSSL_NO_DH
2541 __owur DH
*ssl_get_auto_dh(SSL
*s
);
2544 __owur
int ssl_security_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
, int vfy
, int is_ee
);
2545 __owur
int ssl_security_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
, X509
*ex
,
2548 int tls_choose_sigalg(SSL
*s
, int fatalerrs
);
2550 __owur EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
);
2551 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
);
2552 __owur
long ssl_get_algorithm2(SSL
*s
);
2553 __owur
int tls12_copy_sigalgs(SSL
*s
, WPACKET
*pkt
,
2554 const uint16_t *psig
, size_t psiglen
);
2555 __owur
int tls1_save_u16(PACKET
*pkt
, uint16_t **pdest
, size_t *pdestlen
);
2556 __owur
int tls1_save_sigalgs(SSL
*s
, PACKET
*pkt
, int cert
);
2557 __owur
int tls1_process_sigalgs(SSL
*s
);
2558 __owur
int tls1_set_peer_legacy_sigalg(SSL
*s
, const EVP_PKEY
*pkey
);
2559 __owur
int tls1_lookup_md(const SIGALG_LOOKUP
*lu
, const EVP_MD
**pmd
);
2560 __owur
size_t tls12_get_psigalgs(SSL
*s
, int sent
, const uint16_t **psigs
);
2561 __owur
int tls12_check_peer_sigalg(SSL
*s
, uint16_t, EVP_PKEY
*pkey
);
2562 __owur
int ssl_set_client_disabled(SSL
*s
);
2563 __owur
int ssl_cipher_disabled(SSL
*s
, const SSL_CIPHER
*c
, int op
, int echde
);
2565 __owur
int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
2567 __owur
const EVP_MD
*ssl_md(int idx
);
2568 __owur
const EVP_MD
*ssl_handshake_md(SSL
*s
);
2569 __owur
const EVP_MD
*ssl_prf_md(SSL
*s
);
2572 * ssl_log_rsa_client_key_exchange logs |premaster| to the SSL_CTX associated
2573 * with |ssl|, if logging is enabled. It returns one on success and zero on
2574 * failure. The entry is identified by the first 8 bytes of
2575 * |encrypted_premaster|.
2577 __owur
int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
2578 const uint8_t *encrypted_premaster
,
2579 size_t encrypted_premaster_len
,
2580 const uint8_t *premaster
,
2581 size_t premaster_len
);
2584 * ssl_log_secret logs |secret| to the SSL_CTX associated with |ssl|, if
2585 * logging is available. It returns one on success and zero on failure. It tags
2586 * the entry with |label|.
2588 __owur
int ssl_log_secret(SSL
*ssl
, const char *label
,
2589 const uint8_t *secret
, size_t secret_len
);
2591 #define MASTER_SECRET_LABEL "CLIENT_RANDOM"
2592 #define CLIENT_EARLY_LABEL "CLIENT_EARLY_TRAFFIC_SECRET"
2593 #define CLIENT_HANDSHAKE_LABEL "CLIENT_HANDSHAKE_TRAFFIC_SECRET"
2594 #define SERVER_HANDSHAKE_LABEL "SERVER_HANDSHAKE_TRAFFIC_SECRET"
2595 #define CLIENT_APPLICATION_LABEL "CLIENT_TRAFFIC_SECRET_0"
2596 #define SERVER_APPLICATION_LABEL "SERVER_TRAFFIC_SECRET_0"
2597 #define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
2598 #define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
2601 __owur
char ssl3_cbc_record_digest_supported(const EVP_MD_CTX
*ctx
);
2602 __owur
int ssl3_cbc_digest_record(const EVP_MD_CTX
*ctx
,
2603 unsigned char *md_out
,
2604 size_t *md_out_size
,
2605 const unsigned char header
[13],
2606 const unsigned char *data
,
2607 size_t data_plus_mac_size
,
2608 size_t data_plus_mac_plus_padding_size
,
2609 const unsigned char *mac_secret
,
2610 size_t mac_secret_length
, char is_sslv3
);
2612 __owur
int srp_generate_server_master_secret(SSL
*s
);
2613 __owur
int srp_generate_client_master_secret(SSL
*s
);
2614 __owur
int srp_verify_server_param(SSL
*s
);
2616 /* statem/statem_srvr.c */
2618 __owur
int send_certificate_request(SSL
*s
);
2620 /* statem/extensions_cust.c */
2622 custom_ext_method
*custom_ext_find(const custom_ext_methods
*exts
,
2623 ENDPOINT role
, unsigned int ext_type
,
2626 void custom_ext_init(custom_ext_methods
*meths
);
2628 __owur
int custom_ext_parse(SSL
*s
, unsigned int context
, unsigned int ext_type
,
2629 const unsigned char *ext_data
, size_t ext_size
,
2630 X509
*x
, size_t chainidx
);
2631 __owur
int custom_ext_add(SSL
*s
, int context
, WPACKET
*pkt
, X509
*x
,
2632 size_t chainidx
, int maxversion
);
2634 __owur
int custom_exts_copy(custom_ext_methods
*dst
,
2635 const custom_ext_methods
*src
);
2636 __owur
int custom_exts_copy_flags(custom_ext_methods
*dst
,
2637 const custom_ext_methods
*src
);
2638 void custom_exts_free(custom_ext_methods
*exts
);
2640 void ssl_comp_free_compression_methods_int(void);
2643 void ssl_ctx_system_config(SSL_CTX
*ctx
);
2645 # else /* OPENSSL_UNIT_TEST */
2647 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2648 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers