2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
42 #ifndef HEADER_SSL_LOCL_H
43 # define HEADER_SSL_LOCL_H
50 # if defined(__unix) || defined(__unix__)
51 # include <sys/time.h> /* struct timeval for DTLS */
54 # include <openssl/buffer.h>
55 # include <openssl/comp.h>
56 # include <openssl/bio.h>
57 # include <openssl/stack.h>
58 # include <openssl/rsa.h>
59 # include <openssl/dsa.h>
60 # include <openssl/err.h>
61 # include <openssl/ssl.h>
62 # include <openssl/async.h>
63 # include <openssl/symhacks.h>
64 # include <openssl/ct.h>
65 # include "record/record.h"
66 # include "statem/statem.h"
67 # include "packet_locl.h"
68 # include "internal/dane.h"
69 # include "internal/refcount.h"
71 # ifdef OPENSSL_BUILD_SHLIBSSL
72 # undef OPENSSL_EXTERN
73 # define OPENSSL_EXTERN OPENSSL_EXPORT
78 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
79 l|=(((unsigned long)(*((c)++)))<< 8), \
80 l|=(((unsigned long)(*((c)++)))<<16), \
81 l|=(((unsigned long)(*((c)++)))<<24))
83 /* NOTE - c is not incremented as per c2l */
84 # define c2ln(c,l1,l2,n) { \
88 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
89 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
90 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
91 case 5: l2|=((unsigned long)(*(--(c)))); \
92 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
93 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
94 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
95 case 1: l1|=((unsigned long)(*(--(c)))); \
99 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
100 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
102 *((c)++)=(unsigned char)(((l)>>24)&0xff))
104 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
105 l|=((unsigned long)(*((c)++)))<<16, \
106 l|=((unsigned long)(*((c)++)))<< 8, \
107 l|=((unsigned long)(*((c)++))))
109 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
110 l|=((uint64_t)(*((c)++)))<<48, \
111 l|=((uint64_t)(*((c)++)))<<40, \
112 l|=((uint64_t)(*((c)++)))<<32, \
113 l|=((uint64_t)(*((c)++)))<<24, \
114 l|=((uint64_t)(*((c)++)))<<16, \
115 l|=((uint64_t)(*((c)++)))<< 8, \
116 l|=((uint64_t)(*((c)++))))
119 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
120 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
121 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
122 *((c)++)=(unsigned char)(((l) )&0xff))
124 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
125 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
126 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
127 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
128 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
129 *((c)++)=(unsigned char)(((l) )&0xff))
131 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
132 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
133 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
134 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
135 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
136 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
137 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
138 *((c)++)=(unsigned char)(((l) )&0xff))
140 /* NOTE - c is not incremented as per l2c */
141 # define l2cn(l1,l2,c,n) { \
144 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
145 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
146 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
147 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
148 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
149 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
150 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
151 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
155 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
156 (((unsigned int)((c)[1])) )),(c)+=2)
157 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
158 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
160 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
161 (((unsigned long)((c)[1]))<< 8)| \
162 (((unsigned long)((c)[2])) )),(c)+=3)
164 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
165 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
166 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
169 * DTLS version numbers are strange because they're inverted. Except for
170 * DTLS1_BAD_VER, which should be considered "lower" than the rest.
172 # define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
173 # define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
174 # define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
175 # define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
176 # define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
180 # define SSL_DECRYPT 0
181 # define SSL_ENCRYPT 1
183 # define TWO_BYTE_BIT 0x80
184 # define SEC_ESC_BIT 0x40
185 # define TWO_BYTE_MASK 0x7fff
186 # define THREE_BYTE_MASK 0x3fff
188 # define INC32(a) ((a)=((a)+1)&0xffffffffL)
189 # define DEC32(a) ((a)=((a)-1)&0xffffffffL)
190 # define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
193 * Define the Bitmasks for SSL_CIPHER.algorithms.
194 * This bits are used packed as dense as possible. If new methods/ciphers
195 * etc will be added, the bits a likely to change, so this information
196 * is for internal library use only, even though SSL_CIPHER.algorithms
197 * can be publicly accessed.
198 * Use the according functions for cipher management instead.
200 * The bit mask handling in the selection and sorting scheme in
201 * ssl_create_cipher_list() has only limited capabilities, reflecting
202 * that the different entities within are mutually exclusive:
203 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
206 /* Bits for algorithm_mkey (key exchange algorithm) */
207 /* RSA key exchange */
208 # define SSL_kRSA 0x00000001U
209 /* tmp DH key no DH cert */
210 # define SSL_kDHE 0x00000002U
212 # define SSL_kEDH SSL_kDHE
214 # define SSL_kECDHE 0x00000004U
216 # define SSL_kEECDH SSL_kECDHE
218 # define SSL_kPSK 0x00000008U
219 /* GOST key exchange */
220 # define SSL_kGOST 0x00000010U
222 # define SSL_kSRP 0x00000020U
224 # define SSL_kRSAPSK 0x00000040U
225 # define SSL_kECDHEPSK 0x00000080U
226 # define SSL_kDHEPSK 0x00000100U
230 # define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
232 /* Bits for algorithm_auth (server authentication) */
234 # define SSL_aRSA 0x00000001U
236 # define SSL_aDSS 0x00000002U
237 /* no auth (i.e. use ADH or AECDH) */
238 # define SSL_aNULL 0x00000004U
240 # define SSL_aECDSA 0x00000008U
242 # define SSL_aPSK 0x00000010U
243 /* GOST R 34.10-2001 signature auth */
244 # define SSL_aGOST01 0x00000020U
246 # define SSL_aSRP 0x00000040U
247 /* GOST R 34.10-2012 signature auth */
248 # define SSL_aGOST12 0x00000080U
250 /* Bits for algorithm_enc (symmetric encryption) */
251 # define SSL_DES 0x00000001U
252 # define SSL_3DES 0x00000002U
253 # define SSL_RC4 0x00000004U
254 # define SSL_RC2 0x00000008U
255 # define SSL_IDEA 0x00000010U
256 # define SSL_eNULL 0x00000020U
257 # define SSL_AES128 0x00000040U
258 # define SSL_AES256 0x00000080U
259 # define SSL_CAMELLIA128 0x00000100U
260 # define SSL_CAMELLIA256 0x00000200U
261 # define SSL_eGOST2814789CNT 0x00000400U
262 # define SSL_SEED 0x00000800U
263 # define SSL_AES128GCM 0x00001000U
264 # define SSL_AES256GCM 0x00002000U
265 # define SSL_AES128CCM 0x00004000U
266 # define SSL_AES256CCM 0x00008000U
267 # define SSL_AES128CCM8 0x00010000U
268 # define SSL_AES256CCM8 0x00020000U
269 # define SSL_eGOST2814789CNT12 0x00040000U
270 # define SSL_CHACHA20POLY1305 0x00080000U
272 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
273 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
274 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
275 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
276 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
278 /* Bits for algorithm_mac (symmetric authentication) */
280 # define SSL_MD5 0x00000001U
281 # define SSL_SHA1 0x00000002U
282 # define SSL_GOST94 0x00000004U
283 # define SSL_GOST89MAC 0x00000008U
284 # define SSL_SHA256 0x00000010U
285 # define SSL_SHA384 0x00000020U
286 /* Not a real MAC, just an indication it is part of cipher */
287 # define SSL_AEAD 0x00000040U
288 # define SSL_GOST12_256 0x00000080U
289 # define SSL_GOST89MAC12 0x00000100U
290 # define SSL_GOST12_512 0x00000200U
293 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
294 * sure to update this constant too
297 # define SSL_MD_MD5_IDX 0
298 # define SSL_MD_SHA1_IDX 1
299 # define SSL_MD_GOST94_IDX 2
300 # define SSL_MD_GOST89MAC_IDX 3
301 # define SSL_MD_SHA256_IDX 4
302 # define SSL_MD_SHA384_IDX 5
303 # define SSL_MD_GOST12_256_IDX 6
304 # define SSL_MD_GOST89MAC12_IDX 7
305 # define SSL_MD_GOST12_512_IDX 8
306 # define SSL_MD_MD5_SHA1_IDX 9
307 # define SSL_MD_SHA224_IDX 10
308 # define SSL_MD_SHA512_IDX 11
309 # define SSL_MAX_DIGEST 12
311 /* Bits for algorithm2 (handshake digests and other extra flags) */
313 /* Bits 0-7 are handshake MAC */
314 # define SSL_HANDSHAKE_MAC_MASK 0xFF
315 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
316 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
317 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
318 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
319 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
320 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
321 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
323 /* Bits 8-15 bits are PRF */
324 # define TLS1_PRF_DGST_SHIFT 8
325 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
326 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
327 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
328 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
329 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
330 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
331 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
334 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
335 * goes into algorithm2)
337 # define TLS1_STREAM_MAC 0x10000
339 # define SSL_STRONG_MASK 0x0000001FU
340 # define SSL_DEFAULT_MASK 0X00000020U
342 # define SSL_STRONG_NONE 0x00000001U
343 # define SSL_LOW 0x00000002U
344 # define SSL_MEDIUM 0x00000004U
345 # define SSL_HIGH 0x00000008U
346 # define SSL_FIPS 0x00000010U
347 # define SSL_NOT_DEFAULT 0x00000020U
349 /* we have used 0000003f - 26 bits left to go */
351 /* Check if an SSL structure is using DTLS */
352 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
354 /* Check if we are using TLSv1.3 */
355 # define SSL_IS_TLS13(s) (!SSL_IS_DTLS(s) \
356 && (s)->method->version >= TLS1_3_VERSION \
357 && (s)->method->version != TLS_ANY_VERSION)
359 /* See if we need explicit IV */
360 # define SSL_USE_EXPLICIT_IV(s) \
361 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
363 * See if we use signature algorithms extension and signature algorithm
366 # define SSL_USE_SIGALGS(s) \
367 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
369 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
370 * apply to others in future.
372 # define SSL_USE_TLS1_2_CIPHERS(s) \
373 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
375 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
376 * flags because it may not be set to correct version yet.
378 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
379 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
380 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
382 * Determine if a client should send signature algorithms extension:
383 * as with TLS1.2 cipher we can't rely on method flags.
385 # define SSL_CLIENT_USE_SIGALGS(s) \
386 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
388 # define SSL_USE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC)
390 /* Mostly for SSLv3 */
391 # define SSL_PKEY_RSA_ENC 0
392 # define SSL_PKEY_RSA_SIGN 1
393 # define SSL_PKEY_DSA_SIGN 2
394 # define SSL_PKEY_ECC 3
395 # define SSL_PKEY_GOST01 4
396 # define SSL_PKEY_GOST12_256 5
397 # define SSL_PKEY_GOST12_512 6
398 # define SSL_PKEY_NUM 7
400 * Pseudo-constant. GOST cipher suites can use different certs for 1
401 * SSL_CIPHER. So let's see which one we have in fact.
403 # define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1
406 * SSL_kRSA <- RSA_ENC
407 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
408 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
409 * SSL_aRSA <- RSA_ENC | RSA_SIGN
410 * SSL_aDSS <- DSA_SIGN
414 #define CERT_INVALID 0
415 #define CERT_PUBLIC_KEY 1
416 #define CERT_PRIVATE_KEY 2
419 /* CipherSuite length. SSLv3 and all TLS versions. */
420 # define TLS_CIPHER_LEN 2
421 /* used to hold info on the particular ciphers used */
422 struct ssl_cipher_st
{
424 const char *name
; /* text name */
425 uint32_t id
; /* id, 4 bytes, first is version */
427 * changed in 1.0.0: these four used to be portions of a single value
430 uint32_t algorithm_mkey
; /* key exchange algorithm */
431 uint32_t algorithm_auth
; /* server authentication */
432 uint32_t algorithm_enc
; /* symmetric encryption */
433 uint32_t algorithm_mac
; /* symmetric authentication */
434 int min_tls
; /* minimum SSL/TLS protocol version */
435 int max_tls
; /* maximum SSL/TLS protocol version */
436 int min_dtls
; /* minimum DTLS protocol version */
437 int max_dtls
; /* maximum DTLS protocol version */
438 uint32_t algo_strength
; /* strength and export flags */
439 uint32_t algorithm2
; /* Extra flags */
440 int32_t strength_bits
; /* Number of bits really used */
441 uint32_t alg_bits
; /* Number of bits for algorithm */
444 /* Used to hold SSL/TLS functions */
445 struct ssl_method_st
{
449 int (*ssl_new
) (SSL
*s
);
450 void (*ssl_clear
) (SSL
*s
);
451 void (*ssl_free
) (SSL
*s
);
452 int (*ssl_accept
) (SSL
*s
);
453 int (*ssl_connect
) (SSL
*s
);
454 int (*ssl_read
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
455 int (*ssl_peek
) (SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
456 int (*ssl_write
) (SSL
*s
, const void *buf
, size_t len
, size_t *written
);
457 int (*ssl_shutdown
) (SSL
*s
);
458 int (*ssl_renegotiate
) (SSL
*s
);
459 int (*ssl_renegotiate_check
) (SSL
*s
);
460 int (*ssl_read_bytes
) (SSL
*s
, int type
, int *recvd_type
,
461 unsigned char *buf
, size_t len
, int peek
,
463 int (*ssl_write_bytes
) (SSL
*s
, int type
, const void *buf_
, size_t len
,
465 int (*ssl_dispatch_alert
) (SSL
*s
);
466 long (*ssl_ctrl
) (SSL
*s
, int cmd
, long larg
, void *parg
);
467 long (*ssl_ctx_ctrl
) (SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
);
468 const SSL_CIPHER
*(*get_cipher_by_char
) (const unsigned char *ptr
);
469 int (*put_cipher_by_char
) (const SSL_CIPHER
*cipher
, WPACKET
*pkt
,
471 size_t (*ssl_pending
) (const SSL
*s
);
472 int (*num_ciphers
) (void);
473 const SSL_CIPHER
*(*get_cipher
) (unsigned ncipher
);
474 long (*get_timeout
) (void);
475 const struct ssl3_enc_method
*ssl3_enc
; /* Extra SSLv3/TLS stuff */
476 int (*ssl_version
) (void);
477 long (*ssl_callback_ctrl
) (SSL
*s
, int cb_id
, void (*fp
) (void));
478 long (*ssl_ctx_callback_ctrl
) (SSL_CTX
*s
, int cb_id
, void (*fp
) (void));
482 * Lets make this into an ASN.1 type structure as follows
483 * SSL_SESSION_ID ::= SEQUENCE {
484 * version INTEGER, -- structure version number
485 * SSLversion INTEGER, -- SSL version number
486 * Cipher OCTET STRING, -- the 3 byte cipher ID
487 * Session_ID OCTET STRING, -- the Session ID
488 * Master_key OCTET STRING, -- the master key
489 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
490 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
491 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
492 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
493 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
494 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
495 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
496 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
497 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
498 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
499 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
500 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
501 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
502 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
504 * Look in ssl/ssl_asn1.c for more details
505 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
507 struct ssl_session_st
{
508 int ssl_version
; /* what ssl version session info is being kept
510 size_t master_key_length
;
511 unsigned char master_key
[SSL_MAX_MASTER_KEY_LENGTH
];
512 /* session_id - valid? */
513 size_t session_id_length
;
514 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
516 * this is used to determine whether the session is being reused in the
517 * appropriate context. It is up to the application to set this, via
520 size_t sid_ctx_length
;
521 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
522 # ifndef OPENSSL_NO_PSK
523 char *psk_identity_hint
;
527 * Used to indicate that session resumption is not allowed. Applications
528 * can also set this bit for a new session via not_resumable_session_cb
529 * to disable session caching and tickets.
532 /* This is the cert and type for the other end. */
535 /* Certificate chain peer sent */
536 STACK_OF(X509
) *peer_chain
;
538 * when app_verify_callback accepts a session where the peer's
539 * certificate is not ok, we must remember the error for session reuse:
541 long verify_result
; /* only for servers */
542 CRYPTO_REF_COUNT references
;
545 unsigned int compress_meth
; /* Need to lookup the method */
546 const SSL_CIPHER
*cipher
;
547 unsigned long cipher_id
; /* when ASN.1 loaded, this needs to be used to
548 * load the 'cipher' structure */
549 STACK_OF(SSL_CIPHER
) *ciphers
; /* shared ciphers? */
550 CRYPTO_EX_DATA ex_data
; /* application specific data */
552 * These are used to make removal of session-ids more efficient and to
553 * implement a maximum cache size.
555 struct ssl_session_st
*prev
, *next
;
556 char *tlsext_hostname
;
557 # ifndef OPENSSL_NO_EC
558 size_t tlsext_ecpointformatlist_length
;
559 unsigned char *tlsext_ecpointformatlist
; /* peer's list */
560 size_t tlsext_supportedgroupslist_length
;
561 unsigned char *tlsext_supportedgroupslist
; /* peer's list */
562 # endif /* OPENSSL_NO_EC */
564 unsigned char *tlsext_tick
; /* Session ticket */
565 size_t tlsext_ticklen
; /* Session ticket length */
566 unsigned long tlsext_tick_lifetime_hint
; /* Session lifetime hint in
568 # ifndef OPENSSL_NO_SRP
575 /* Extended master secret support */
576 # define SSL_SESS_FLAG_EXTMS 0x1
578 # ifndef OPENSSL_NO_SRP
580 typedef struct srp_ctx_st
{
581 /* param for all the callbacks */
583 /* set client Hello login callback */
584 int (*TLS_ext_srp_username_callback
) (SSL
*, int *, void *);
585 /* set SRP N/g param callback for verification */
586 int (*SRP_verify_param_callback
) (SSL
*, void *);
587 /* set SRP client passwd callback */
588 char *(*SRP_give_srp_client_pwd_callback
) (SSL
*, void *);
590 BIGNUM
*N
, *g
, *s
, *B
, *A
;
594 unsigned long srp_Mask
;
605 DEFINE_LHASH_OF(SSL_SESSION
);
606 /* Needed in ssl_cert.c */
607 DEFINE_LHASH_OF(X509_NAME
);
609 # define TLSEXT_KEYNAME_LENGTH 16
612 const SSL_METHOD
*method
;
613 STACK_OF(SSL_CIPHER
) *cipher_list
;
614 /* same as above but sorted for lookup */
615 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
616 struct x509_store_st
/* X509_STORE */ *cert_store
;
617 LHASH_OF(SSL_SESSION
) *sessions
;
619 * Most session-ids that will be cached, default is
620 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
622 size_t session_cache_size
;
623 struct ssl_session_st
*session_cache_head
;
624 struct ssl_session_st
*session_cache_tail
;
626 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
627 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
628 * means only SSL_accept which cache SSL_SESSIONS.
630 uint32_t session_cache_mode
;
632 * If timeout is not 0, it is the default timeout value set when
633 * SSL_new() is called. This has been put in to make life easier to set
636 long session_timeout
;
638 * If this callback is not null, it will be called each time a session id
639 * is added to the cache. If this function returns 1, it means that the
640 * callback will do a SSL_SESSION_free() when it has finished using it.
641 * Otherwise, on 0, it means the callback has finished with it. If
642 * remove_session_cb is not null, it will be called when a session-id is
643 * removed from the cache. After the call, OpenSSL will
644 * SSL_SESSION_free() it.
646 int (*new_session_cb
) (struct ssl_st
*ssl
, SSL_SESSION
*sess
);
647 void (*remove_session_cb
) (struct ssl_ctx_st
*ctx
, SSL_SESSION
*sess
);
648 SSL_SESSION
*(*get_session_cb
) (struct ssl_st
*ssl
,
649 const unsigned char *data
, int len
,
652 int sess_connect
; /* SSL new conn - started */
653 int sess_connect_renegotiate
; /* SSL reneg - requested */
654 int sess_connect_good
; /* SSL new conne/reneg - finished */
655 int sess_accept
; /* SSL new accept - started */
656 int sess_accept_renegotiate
; /* SSL reneg - requested */
657 int sess_accept_good
; /* SSL accept/reneg - finished */
658 int sess_miss
; /* session lookup misses */
659 int sess_timeout
; /* reuse attempt on timeouted session */
660 int sess_cache_full
; /* session removed due to full cache */
661 int sess_hit
; /* session reuse actually done */
662 int sess_cb_hit
; /* session-id that was not in the cache was
663 * passed back via the callback. This
664 * indicates that the application is supplying
665 * session-id's from other processes - spooky
669 CRYPTO_REF_COUNT references
;
671 /* if defined, these override the X509_verify_cert() calls */
672 int (*app_verify_callback
) (X509_STORE_CTX
*, void *);
673 void *app_verify_arg
;
675 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
676 * ('app_verify_callback' was called with just one argument)
679 /* Default password callback. */
680 pem_password_cb
*default_passwd_callback
;
682 /* Default password callback user data. */
683 void *default_passwd_callback_userdata
;
685 /* get client cert callback */
686 int (*client_cert_cb
) (SSL
*ssl
, X509
**x509
, EVP_PKEY
**pkey
);
688 /* cookie generate callback */
689 int (*app_gen_cookie_cb
) (SSL
*ssl
, unsigned char *cookie
,
690 unsigned int *cookie_len
);
692 /* verify cookie callback */
693 int (*app_verify_cookie_cb
) (SSL
*ssl
, const unsigned char *cookie
,
694 unsigned int cookie_len
);
696 CRYPTO_EX_DATA ex_data
;
698 const EVP_MD
*md5
; /* For SSLv3/TLSv1 'ssl3-md5' */
699 const EVP_MD
*sha1
; /* For SSLv3/TLSv1 'ssl3->sha1' */
701 STACK_OF(X509
) *extra_certs
;
702 STACK_OF(SSL_COMP
) *comp_methods
; /* stack of SSL_COMP, SSLv3/TLSv1 */
704 /* Default values used when no per-SSL value is defined follow */
706 /* used if SSL's info_callback is NULL */
707 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
709 /* what we put in client cert requests */
710 STACK_OF(X509_NAME
) *client_CA
;
713 * Default values to use in SSL structures follow (these are copied by
719 int min_proto_version
;
720 int max_proto_version
;
721 size_t max_cert_list
;
723 struct cert_st
/* CERT */ *cert
;
726 /* callback that allows applications to peek at protocol messages */
727 void (*msg_callback
) (int write_p
, int version
, int content_type
,
728 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
729 void *msg_callback_arg
;
731 uint32_t verify_mode
;
732 size_t sid_ctx_length
;
733 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
734 /* called 'verify_callback' in the SSL */
735 int (*default_verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
737 /* Default generate session ID callback. */
738 GEN_SESSION_CB generate_session_id
;
740 X509_VERIFY_PARAM
*param
;
744 # ifndef OPENSSL_NO_CT
745 CTLOG_STORE
*ctlog_store
; /* CT Log Store */
747 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
748 * If they are not, the connection should be aborted.
750 ssl_ct_validation_cb ct_validation_callback
;
751 void *ct_validation_callback_arg
;
755 * If we're using more than one pipeline how should we divide the data
756 * up between the pipes?
758 size_t split_send_fragment
;
760 * Maximum amount of data to send in one fragment. actual record size can
761 * be more than this due to padding and MAC overheads.
763 size_t max_send_fragment
;
765 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
766 size_t max_pipelines
;
768 /* The default read buffer length to use (0 means not set) */
769 size_t default_read_buf_len
;
771 # ifndef OPENSSL_NO_ENGINE
773 * Engine to pass requests for client certs to
775 ENGINE
*client_cert_engine
;
778 /* TLS extensions servername callback */
779 int (*tlsext_servername_callback
) (SSL
*, int *, void *);
780 void *tlsext_servername_arg
;
781 /* RFC 4507 session ticket keys */
782 unsigned char tlsext_tick_key_name
[TLSEXT_KEYNAME_LENGTH
];
783 unsigned char tlsext_tick_hmac_key
[32];
784 unsigned char tlsext_tick_aes_key
[32];
785 /* Callback to support customisation of ticket key setting */
786 int (*tlsext_ticket_key_cb
) (SSL
*ssl
,
787 unsigned char *name
, unsigned char *iv
,
788 EVP_CIPHER_CTX
*ectx
, HMAC_CTX
*hctx
, int enc
);
790 /* certificate status request info */
791 /* Callback for status request */
792 int (*tlsext_status_cb
) (SSL
*ssl
, void *arg
);
793 void *tlsext_status_arg
;
795 # ifndef OPENSSL_NO_PSK
796 unsigned int (*psk_client_callback
) (SSL
*ssl
, const char *hint
,
798 unsigned int max_identity_len
,
800 unsigned int max_psk_len
);
801 unsigned int (*psk_server_callback
) (SSL
*ssl
, const char *identity
,
803 unsigned int max_psk_len
);
806 # ifndef OPENSSL_NO_SRP
807 SRP_CTX srp_ctx
; /* ctx for SRP authentication */
810 # ifndef OPENSSL_NO_NEXTPROTONEG
811 /* Next protocol negotiation information */
814 * For a server, this contains a callback function by which the set of
815 * advertised protocols can be provided.
817 int (*next_protos_advertised_cb
) (SSL
*s
, const unsigned char **buf
,
818 unsigned int *len
, void *arg
);
819 void *next_protos_advertised_cb_arg
;
821 * For a client, this contains a callback function that selects the next
822 * protocol from the list provided by the server.
824 int (*next_proto_select_cb
) (SSL
*s
, unsigned char **out
,
825 unsigned char *outlen
,
826 const unsigned char *in
,
827 unsigned int inlen
, void *arg
);
828 void *next_proto_select_cb_arg
;
832 * ALPN information (we are in the process of transitioning from NPN to
837 * For a server, this contains a callback function that allows the
838 * server to select the protocol for the connection.
839 * out: on successful return, this must point to the raw protocol
840 * name (without the length prefix).
841 * outlen: on successful return, this contains the length of |*out|.
842 * in: points to the client's list of supported protocols in
844 * inlen: the length of |in|.
846 int (*alpn_select_cb
) (SSL
*s
,
847 const unsigned char **out
,
848 unsigned char *outlen
,
849 const unsigned char *in
,
850 unsigned int inlen
, void *arg
);
851 void *alpn_select_cb_arg
;
854 * For a client, this contains the list of supported protocols in wire
857 unsigned char *alpn_client_proto_list
;
858 size_t alpn_client_proto_list_len
;
860 /* Shared DANE context */
861 struct dane_ctx_st dane
;
863 /* SRTP profiles we are willing to do from RFC 5764 */
864 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
866 * Callback for disabling session caching and ticket support on a session
867 * basis, depending on the chosen cipher.
869 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
870 # ifndef OPENSSL_NO_EC
871 /* EC extension values inherited by SSL structure */
872 size_t tlsext_ecpointformatlist_length
;
873 unsigned char *tlsext_ecpointformatlist
;
874 size_t tlsext_supportedgroupslist_length
;
875 unsigned char *tlsext_supportedgroupslist
;
876 # endif /* OPENSSL_NO_EC */
878 /* ext status type used for CSR extension (OCSP Stapling) */
879 int tlsext_status_type
;
886 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
891 const SSL_METHOD
*method
;
893 * There are 2 BIO's even though they are normally both the same. This
894 * is so data can be read and written to different handlers
896 /* used by SSL_read */
898 /* used by SSL_write */
900 /* used during session-id reuse to concatenate messages */
903 * This holds a variable that indicates what we were doing when a 0 or -1
904 * is returned. This is needed for non-blocking IO so we know what
905 * request needs re-doing when in SSL_accept or SSL_connect
908 int (*handshake_func
) (SSL
*);
910 * Imagine that here's a boolean member "init" that is switched as soon
911 * as SSL_set_{accept/connect}_state is called for the first time, so
912 * that "state" and "handshake_func" are properly initialized. But as
913 * handshake_func is == 0 until then, we use this test instead of an
916 /* are we the server side? */
919 * Generate a new session or reuse an old one.
920 * NB: For servers, the 'new' session may actually be a previously
921 * cached session or even the previous session unless
922 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
925 /* don't send shutdown packets */
927 /* we have shut things down, 0x01 sent, 0x02 for received */
931 BUF_MEM
*init_buf
; /* buffer used during init */
932 void *init_msg
; /* pointer to handshake message body, set by
933 * ssl3_get_message() */
934 size_t init_num
; /* amount read/written */
935 size_t init_off
; /* amount read/written */
936 struct ssl3_state_st
*s3
; /* SSLv3 variables */
937 struct dtls1_state_st
*d1
; /* DTLSv1 variables */
938 /* callback that allows applications to peek at protocol messages */
939 void (*msg_callback
) (int write_p
, int version
, int content_type
,
940 const void *buf
, size_t len
, SSL
*ssl
, void *arg
);
941 void *msg_callback_arg
;
942 int hit
; /* reusing a previous session */
943 X509_VERIFY_PARAM
*param
;
944 /* Per connection DANE state */
947 STACK_OF(SSL_CIPHER
) *cipher_list
;
948 STACK_OF(SSL_CIPHER
) *cipher_list_by_id
;
950 * These are the ones being used, the ones in SSL_SESSION are the ones to
951 * be 'copied' into these ones
955 * The TLS1.3 early_secret and handshake_secret. The master_secret is stored
958 unsigned char early_secret
[EVP_MAX_MD_SIZE
];
959 unsigned char handshake_secret
[EVP_MAX_MD_SIZE
];
960 unsigned char client_finished_secret
[EVP_MAX_MD_SIZE
];
961 unsigned char server_finished_secret
[EVP_MAX_MD_SIZE
];
962 EVP_CIPHER_CTX
*enc_read_ctx
; /* cryptographic state */
963 EVP_MD_CTX
*read_hash
; /* used for mac generation */
964 COMP_CTX
*compress
; /* compression */
965 COMP_CTX
*expand
; /* uncompress */
966 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
967 EVP_MD_CTX
*write_hash
; /* used for mac generation */
970 /* This is used to hold the server certificate used */
971 struct cert_st
/* CERT */ *cert
;
973 * the session_id_context is used to ensure sessions are only reused in
974 * the appropriate context
976 size_t sid_ctx_length
;
977 unsigned char sid_ctx
[SSL_MAX_SID_CTX_LENGTH
];
978 /* This can also be in the session once a session is established */
979 SSL_SESSION
*session
;
980 /* Default generate session ID callback. */
981 GEN_SESSION_CB generate_session_id
;
984 * 0 don't care about verify failure.
985 * 1 fail if verify fails
987 uint32_t verify_mode
;
988 /* fail if callback returns 0 */
989 int (*verify_callback
) (int ok
, X509_STORE_CTX
*ctx
);
990 /* optional informational callback */
991 void (*info_callback
) (const SSL
*ssl
, int type
, int val
);
992 /* error bytes to be written */
996 # ifndef OPENSSL_NO_PSK
997 unsigned int (*psk_client_callback
) (SSL
*ssl
, const char *hint
,
999 unsigned int max_identity_len
,
1001 unsigned int max_psk_len
);
1002 unsigned int (*psk_server_callback
) (SSL
*ssl
, const char *identity
,
1004 unsigned int max_psk_len
);
1007 /* Verified chain of peer */
1008 STACK_OF(X509
) *verified_chain
;
1010 /* extra application data */
1011 CRYPTO_EX_DATA ex_data
;
1012 /* for server side, keep the list of CA_dn we can use */
1013 STACK_OF(X509_NAME
) *client_CA
;
1014 CRYPTO_REF_COUNT references
;
1015 /* protocol behaviour */
1019 int min_proto_version
;
1020 int max_proto_version
;
1021 size_t max_cert_list
;
1023 /* what was passed, used for SSLv3/TLS rollback check */
1026 * If we're using more than one pipeline how should we divide the data
1027 * up between the pipes?
1029 size_t split_send_fragment
;
1031 * Maximum amount of data to send in one fragment. actual record size can
1032 * be more than this due to padding and MAC overheads.
1034 size_t max_send_fragment
;
1035 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1036 size_t max_pipelines
;
1037 /* TLS extension debug callback */
1038 void (*tlsext_debug_cb
) (SSL
*s
, int client_server
, int type
,
1039 const unsigned char *data
, int len
, void *arg
);
1040 void *tlsext_debug_arg
;
1041 char *tlsext_hostname
;
1043 * no further mod of servername
1044 * 0 : call the servername extension callback.
1045 * 1 : prepare 2, allow last ack just after in server callback.
1046 * 2 : don't call servername callback, no ack in server hello
1048 int servername_done
;
1049 /* certificate status request info */
1050 /* Status type or -1 if no status type */
1051 int tlsext_status_type
;
1052 # ifndef OPENSSL_NO_CT
1054 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1055 * If they are not, the connection should be aborted.
1057 ssl_ct_validation_cb ct_validation_callback
;
1058 /* User-supplied argument tha tis passed to the ct_validation_callback */
1059 void *ct_validation_callback_arg
;
1061 * Consolidated stack of SCTs from all sources.
1062 * Lazily populated by CT_get_peer_scts(SSL*)
1064 STACK_OF(SCT
) *scts
;
1065 /* Raw extension data, if seen */
1066 unsigned char *tlsext_scts
;
1067 /* Length of raw extension data, if seen */
1068 uint16_t tlsext_scts_len
;
1069 /* Have we attempted to find/parse SCTs yet? */
1072 /* Expect OCSP CertificateStatus message */
1073 int tlsext_status_expected
;
1074 /* OCSP status request only */
1075 STACK_OF(OCSP_RESPID
) *tlsext_ocsp_ids
;
1076 X509_EXTENSIONS
*tlsext_ocsp_exts
;
1077 /* OCSP response received or to be sent */
1078 unsigned char *tlsext_ocsp_resp
;
1079 size_t tlsext_ocsp_resplen
;
1080 /* RFC4507 session ticket expected to be received or sent */
1081 int tlsext_ticket_expected
;
1082 # ifndef OPENSSL_NO_EC
1083 size_t tlsext_ecpointformatlist_length
;
1085 unsigned char *tlsext_ecpointformatlist
;
1086 size_t tlsext_supportedgroupslist_length
;
1088 unsigned char *tlsext_supportedgroupslist
;
1089 # endif /* OPENSSL_NO_EC */
1090 /* TLS Session Ticket extension override */
1091 TLS_SESSION_TICKET_EXT
*tlsext_session_ticket
;
1092 /* TLS Session Ticket extension callback */
1093 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb
;
1094 void *tls_session_ticket_ext_cb_arg
;
1095 /* TLS pre-shared secret session resumption */
1096 tls_session_secret_cb_fn tls_session_secret_cb
;
1097 void *tls_session_secret_cb_arg
;
1098 SSL_CTX
*initial_ctx
; /* initial ctx, used to store sessions */
1099 # ifndef OPENSSL_NO_NEXTPROTONEG
1101 * Next protocol negotiation. For the client, this is the protocol that
1102 * we sent in NextProtocol and is set when handling ServerHello
1103 * extensions. For a server, this is the client's selected_protocol from
1104 * NextProtocol and is set when handling the NextProtocol message, before
1105 * the Finished message.
1107 unsigned char *next_proto_negotiated
;
1108 size_t next_proto_negotiated_len
;
1110 # define session_ctx initial_ctx
1112 STACK_OF(SRTP_PROTECTION_PROFILE
) *srtp_profiles
;
1113 /* What's been chosen */
1114 SRTP_PROTECTION_PROFILE
*srtp_profile
;
1116 * For a client, this contains the list of supported protocols in wire
1119 unsigned char *alpn_client_proto_list
;
1120 size_t alpn_client_proto_list_len
;
1122 * 1 if we are renegotiating.
1123 * 2 if we are a server and are inside a handshake
1124 * (i.e. not just sending a HelloRequest)
1127 # ifndef OPENSSL_NO_SRP
1128 /* ctx for SRP authentication */
1132 * Callback for disabling session caching and ticket support on a session
1133 * basis, depending on the chosen cipher.
1135 int (*not_resumable_session_cb
) (SSL
*ssl
, int is_forward_secure
);
1136 RECORD_LAYER rlayer
;
1137 /* Default password callback. */
1138 pem_password_cb
*default_passwd_callback
;
1139 /* Default password callback user data. */
1140 void *default_passwd_callback_userdata
;
1141 /* Async Job info */
1143 ASYNC_WAIT_CTX
*waitctx
;
1146 CRYPTO_RWLOCK
*lock
;
1149 typedef struct ssl3_state_st
{
1151 size_t read_mac_secret_size
;
1152 unsigned char read_mac_secret
[EVP_MAX_MD_SIZE
];
1153 size_t write_mac_secret_size
;
1154 unsigned char write_mac_secret
[EVP_MAX_MD_SIZE
];
1155 unsigned char server_random
[SSL3_RANDOM_SIZE
];
1156 unsigned char client_random
[SSL3_RANDOM_SIZE
];
1157 /* flags for countermeasure against known-IV weakness */
1158 int need_empty_fragments
;
1159 int empty_fragment_done
;
1160 /* used during startup, digest all incoming/outgoing packets */
1161 BIO
*handshake_buffer
;
1163 * When handshake digest is determined, buffer is hashed and
1164 * freed and MD_CTX for the required digest is stored here.
1166 EVP_MD_CTX
*handshake_dgst
;
1168 * Set whenever an expected ChangeCipherSpec message is processed.
1169 * Unset when the peer's Finished message is received.
1170 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1172 int change_cipher_spec
;
1176 * we allow one fatal and one warning alert to be outstanding, send close
1177 * alert via the warning alert
1180 unsigned char send_alert
[2];
1182 * This flag is set when we should renegotiate ASAP, basically when there
1183 * is no more data in the read or write buffers
1186 int total_renegotiations
;
1187 int num_renegotiations
;
1188 int in_read_app_data
;
1190 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1191 unsigned char finish_md
[EVP_MAX_MD_SIZE
* 2];
1192 size_t finish_md_len
;
1193 unsigned char peer_finish_md
[EVP_MAX_MD_SIZE
* 2];
1194 size_t peer_finish_md_len
;
1195 size_t message_size
;
1197 /* used to hold the new cipher we are going to use */
1198 const SSL_CIPHER
*new_cipher
;
1199 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1200 EVP_PKEY
*pkey
; /* holds short lived DH/ECDH key */
1202 /* used for certificate requests */
1205 char ctype
[SSL3_CT_NUMBER
];
1206 STACK_OF(X509_NAME
) *ca_names
;
1207 size_t key_block_length
;
1208 unsigned char *key_block
;
1209 const EVP_CIPHER
*new_sym_enc
;
1210 const EVP_MD
*new_hash
;
1211 int new_mac_pkey_type
;
1212 size_t new_mac_secret_size
;
1213 # ifndef OPENSSL_NO_COMP
1214 const SSL_COMP
*new_compression
;
1216 char *new_compression
;
1219 /* Raw values of the cipher list from a client */
1220 unsigned char *ciphers_raw
;
1221 size_t ciphers_rawlen
;
1222 /* Temporary storage for premaster secret */
1225 # ifndef OPENSSL_NO_PSK
1226 /* Temporary storage for PSK key */
1231 * signature algorithms peer reports: e.g. supported signature
1232 * algorithms extension for server or as part of a certificate
1233 * request for client.
1235 unsigned char *peer_sigalgs
;
1236 /* Size of above array */
1237 size_t peer_sigalgslen
;
1238 /* Digest peer uses for signing */
1239 const EVP_MD
*peer_md
;
1240 /* Array of digests used for signing */
1241 const EVP_MD
*md
[SSL_PKEY_NUM
];
1243 * Set if corresponding CERT_PKEY can be used with current
1244 * SSL session: e.g. appropriate curve, signature algorithms etc.
1245 * If zero it can't be used at all.
1247 uint32_t valid_flags
[SSL_PKEY_NUM
];
1249 * For servers the following masks are for the key and auth algorithms
1250 * that are supported by the certs below. For clients they are masks of
1251 * *disabled* algorithms based on the current session.
1256 * The following are used by the client to see if a cipher is allowed or
1257 * not. It contains the minimum and maximum version the client's using
1258 * based on what it knows so far.
1264 /* Connection binding to prevent renegotiation attacks */
1265 unsigned char previous_client_finished
[EVP_MAX_MD_SIZE
];
1266 size_t previous_client_finished_len
;
1267 unsigned char previous_server_finished
[EVP_MAX_MD_SIZE
];
1268 size_t previous_server_finished_len
;
1269 int send_connection_binding
; /* TODOEKR */
1271 # ifndef OPENSSL_NO_NEXTPROTONEG
1273 * Set if we saw the Next Protocol Negotiation extension from our peer.
1275 int next_proto_neg_seen
;
1279 * ALPN information (we are in the process of transitioning from NPN to
1284 * In a server these point to the selected ALPN protocol after the
1285 * ClientHello has been processed. In a client these contain the protocol
1286 * that the server selected once the ServerHello has been processed.
1288 unsigned char *alpn_selected
;
1289 size_t alpn_selected_len
;
1290 /* used by the server to know what options were proposed */
1291 unsigned char *alpn_proposed
;
1292 size_t alpn_proposed_len
;
1293 /* used by the client to know if it actually sent alpn */
1296 # ifndef OPENSSL_NO_EC
1298 * This is set to true if we believe that this is a version of Safari
1299 * running on OS X 10.6 or newer. We wish to know this because Safari on
1300 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1302 char is_probably_safari
;
1303 # endif /* !OPENSSL_NO_EC */
1305 /* For clients: peer temporary key */
1306 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1307 /* The group_id for the DH/ECDH key */
1308 unsigned int group_id
;
1314 /* DTLS structures */
1316 # ifndef OPENSSL_NO_SCTP
1317 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1320 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1321 # define DTLS1_MAX_MTU_OVERHEAD 48
1324 * Flag used in message reuse to indicate the buffer contains the record
1325 * header as well as the the handshake message header.
1327 # define DTLS1_SKIP_RECORD_HEADER 2
1329 struct dtls1_retransmit_state
{
1330 EVP_CIPHER_CTX
*enc_write_ctx
; /* cryptographic state */
1331 EVP_MD_CTX
*write_hash
; /* used for mac generation */
1332 COMP_CTX
*compress
; /* compression */
1333 SSL_SESSION
*session
;
1334 unsigned short epoch
;
1337 struct hm_header_st
{
1343 unsigned int is_ccs
;
1344 struct dtls1_retransmit_state saved_retransmit_state
;
1347 struct dtls1_timeout_st
{
1348 /* Number of read timeouts so far */
1349 unsigned int read_timeouts
;
1350 /* Number of write timeouts so far */
1351 unsigned int write_timeouts
;
1352 /* Number of alerts received so far */
1353 unsigned int num_alerts
;
1356 typedef struct hm_fragment_st
{
1357 struct hm_header_st msg_header
;
1358 unsigned char *fragment
;
1359 unsigned char *reassembly
;
1362 typedef struct pqueue_st pqueue
;
1363 typedef struct pitem_st pitem
;
1366 unsigned char priority
[8]; /* 64-bit value in big-endian encoding */
1371 typedef struct pitem_st
*piterator
;
1373 pitem
*pitem_new(unsigned char *prio64be
, void *data
);
1374 void pitem_free(pitem
*item
);
1375 pqueue
*pqueue_new(void);
1376 void pqueue_free(pqueue
*pq
);
1377 pitem
*pqueue_insert(pqueue
*pq
, pitem
*item
);
1378 pitem
*pqueue_peek(pqueue
*pq
);
1379 pitem
*pqueue_pop(pqueue
*pq
);
1380 pitem
*pqueue_find(pqueue
*pq
, unsigned char *prio64be
);
1381 pitem
*pqueue_iterator(pqueue
*pq
);
1382 pitem
*pqueue_next(piterator
*iter
);
1383 size_t pqueue_size(pqueue
*pq
);
1385 typedef struct dtls1_state_st
{
1386 unsigned char cookie
[DTLS1_COOKIE_LENGTH
];
1388 unsigned int cookie_verified
;
1389 /* handshake message numbers */
1390 unsigned short handshake_write_seq
;
1391 unsigned short next_handshake_write_seq
;
1392 unsigned short handshake_read_seq
;
1393 /* Buffered handshake messages */
1394 pqueue
*buffered_messages
;
1395 /* Buffered (sent) handshake records */
1396 pqueue
*sent_messages
;
1397 size_t link_mtu
; /* max on-the-wire DTLS packet size */
1398 size_t mtu
; /* max DTLS packet size */
1399 struct hm_header_st w_msg_hdr
;
1400 struct hm_header_st r_msg_hdr
;
1401 struct dtls1_timeout_st timeout
;
1403 * Indicates when the last handshake msg sent will timeout
1405 struct timeval next_timeout
;
1406 /* Timeout duration */
1407 unsigned short timeout_duration
;
1408 unsigned int retransmitting
;
1409 # ifndef OPENSSL_NO_SCTP
1410 int shutdown_received
;
1414 # ifndef OPENSSL_NO_EC
1416 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1418 # define EXPLICIT_PRIME_CURVE_TYPE 1
1419 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1420 # define NAMED_CURVE_TYPE 3
1421 # endif /* OPENSSL_NO_EC */
1423 typedef struct cert_pkey_st
{
1425 EVP_PKEY
*privatekey
;
1426 /* Chain for this certificate */
1427 STACK_OF(X509
) *chain
;
1429 * serverinfo data for this certificate. The data is in TLS Extension
1430 * wire format, specifically it's a series of records like:
1431 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1433 * uint8_t data[length];
1435 unsigned char *serverinfo
;
1436 size_t serverinfo_length
;
1438 /* Retrieve Suite B flags */
1439 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1440 /* Uses to check strict mode: suite B modes are always strict */
1441 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1442 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1445 unsigned short ext_type
;
1447 * Per-connection flags relating to this extension type: not used if
1448 * part of an SSL_CTX structure.
1451 custom_ext_add_cb add_cb
;
1452 custom_ext_free_cb free_cb
;
1454 custom_ext_parse_cb parse_cb
;
1456 } custom_ext_method
;
1458 /* ext_flags values */
1461 * Indicates an extension has been received. Used to check for unsolicited or
1462 * duplicate extensions.
1464 # define SSL_EXT_FLAG_RECEIVED 0x1
1466 * Indicates an extension has been sent: used to enable sending of
1467 * corresponding ServerHello extension.
1469 # define SSL_EXT_FLAG_SENT 0x2
1472 custom_ext_method
*meths
;
1474 } custom_ext_methods
;
1476 typedef struct cert_st
{
1477 /* Current active set */
1479 * ALWAYS points to an element of the pkeys array
1480 * Probably it would make more sense to store
1481 * an index, not a pointer.
1484 # ifndef OPENSSL_NO_DH
1486 DH
*(*dh_tmp_cb
) (SSL
*ssl
, int is_export
, int keysize
);
1489 /* Flags related to certificates */
1490 uint32_t cert_flags
;
1491 CERT_PKEY pkeys
[SSL_PKEY_NUM
];
1493 * Certificate types (received or sent) in certificate request message.
1494 * On receive this is only set if number of certificate types exceeds
1497 unsigned char *ctypes
;
1500 * supported signature algorithms. When set on a client this is sent in
1501 * the client hello as the supported signature algorithms extension. For
1502 * servers it represents the signature algorithms we are willing to use.
1504 unsigned char *conf_sigalgs
;
1505 /* Size of above array */
1506 size_t conf_sigalgslen
;
1508 * Client authentication signature algorithms, if not set then uses
1509 * conf_sigalgs. On servers these will be the signature algorithms sent
1510 * to the client in a cerificate request for TLS 1.2. On a client this
1511 * represents the signature algortithms we are willing to use for client
1514 unsigned char *client_sigalgs
;
1515 /* Size of above array */
1516 size_t client_sigalgslen
;
1518 * Signature algorithms shared by client and server: cached because these
1519 * are used most often.
1521 TLS_SIGALGS
*shared_sigalgs
;
1522 size_t shared_sigalgslen
;
1524 * Certificate setup callback: if set is called whenever a certificate
1525 * may be required (client or server). the callback can then examine any
1526 * appropriate parameters and setup any certificates required. This
1527 * allows advanced applications to select certificates on the fly: for
1528 * example based on supported signature algorithms or curves.
1530 int (*cert_cb
) (SSL
*ssl
, void *arg
);
1533 * Optional X509_STORE for chain building or certificate validation If
1534 * NULL the parent SSL_CTX store is used instead.
1536 X509_STORE
*chain_store
;
1537 X509_STORE
*verify_store
;
1538 /* Custom extension methods for server and client */
1539 custom_ext_methods cli_ext
;
1540 custom_ext_methods srv_ext
;
1541 /* Security callback */
1542 int (*sec_cb
) (const SSL
*s
, const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
1543 void *other
, void *ex
);
1544 /* Security level */
1547 # ifndef OPENSSL_NO_PSK
1548 /* If not NULL psk identity hint to use for servers */
1549 char *psk_identity_hint
;
1551 CRYPTO_REF_COUNT references
; /* >1 only if SSL_copy_session_id is used */
1552 CRYPTO_RWLOCK
*lock
;
1555 /* Structure containing decoded values of signature algorithms extension */
1556 struct tls_sigalgs_st
{
1557 /* NID of hash algorithm */
1559 /* NID of signature algorithm */
1561 /* Combined hash and signature NID */
1562 int signandhash_nid
;
1563 /* Raw values used in extension */
1564 unsigned char rsign
;
1565 unsigned char rhash
;
1568 # define FP_ICC (int (*)(const void *,const void *))
1571 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1572 * of a mess of functions, but hell, think of it as an opaque structure :-)
1574 typedef struct ssl3_enc_method
{
1575 int (*enc
) (SSL
*, SSL3_RECORD
*, size_t, int);
1576 int (*mac
) (SSL
*, SSL3_RECORD
*, unsigned char *, int);
1577 int (*setup_key_block
) (SSL
*);
1578 int (*generate_master_secret
) (SSL
*, unsigned char *, unsigned char *,
1580 int (*change_cipher_state
) (SSL
*, int);
1581 size_t (*final_finish_mac
) (SSL
*, const char *, size_t, unsigned char *);
1582 const char *client_finished_label
;
1583 size_t client_finished_label_len
;
1584 const char *server_finished_label
;
1585 size_t server_finished_label_len
;
1586 int (*alert_value
) (int);
1587 int (*export_keying_material
) (SSL
*, unsigned char *, size_t,
1588 const char *, size_t,
1589 const unsigned char *, size_t,
1591 /* Various flags indicating protocol version requirements */
1593 /* Set the handshake header */
1594 int (*set_handshake_header
) (SSL
*s
, WPACKET
*pkt
, int type
);
1595 /* Close construction of the handshake message */
1596 int (*close_construct_packet
) (SSL
*s
, WPACKET
*pkt
, int htype
);
1597 /* Write out handshake message */
1598 int (*do_write
) (SSL
*s
);
1601 # define ssl_set_handshake_header(s, pkt, htype) \
1602 s->method->ssl3_enc->set_handshake_header((s), (pkt), (htype))
1603 # define ssl_close_construct_packet(s, pkt, htype) \
1604 s->method->ssl3_enc->close_construct_packet((s), (pkt), (htype))
1605 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1607 /* Values for enc_flags */
1609 /* Uses explicit IV for CBC mode */
1610 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1611 /* Uses signature algorithms extension */
1612 # define SSL_ENC_FLAG_SIGALGS 0x2
1613 /* Uses SHA256 default PRF */
1614 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1616 # define SSL_ENC_FLAG_DTLS 0x8
1618 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1619 * apply to others in future.
1621 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1623 # ifndef OPENSSL_NO_COMP
1624 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1625 typedef struct ssl3_comp_st
{
1626 int comp_id
; /* The identifier byte for this compression
1628 char *name
; /* Text name used for the compression type */
1629 COMP_METHOD
*method
; /* The method :-) */
1633 typedef struct raw_extension_st
{
1638 #define MAX_COMPRESSIONS_SIZE 255
1642 unsigned int legacy_version
;
1643 unsigned char random
[SSL3_RANDOM_SIZE
];
1644 size_t session_id_len
;
1645 unsigned char session_id
[SSL_MAX_SSL_SESSION_ID_LENGTH
];
1646 size_t dtls_cookie_len
;
1647 unsigned char dtls_cookie
[DTLS1_COOKIE_LENGTH
];
1648 PACKET ciphersuites
;
1649 size_t compressions_len
;
1650 unsigned char compressions
[MAX_COMPRESSIONS_SIZE
];
1652 size_t num_extensions
;
1653 RAW_EXTENSION
*pre_proc_exts
;
1656 extern SSL3_ENC_METHOD ssl3_undef_enc_method
;
1658 __owur
const SSL_METHOD
*ssl_bad_method(int ver
);
1659 __owur
const SSL_METHOD
*sslv3_method(void);
1660 __owur
const SSL_METHOD
*sslv3_server_method(void);
1661 __owur
const SSL_METHOD
*sslv3_client_method(void);
1662 __owur
const SSL_METHOD
*tlsv1_method(void);
1663 __owur
const SSL_METHOD
*tlsv1_server_method(void);
1664 __owur
const SSL_METHOD
*tlsv1_client_method(void);
1665 __owur
const SSL_METHOD
*tlsv1_1_method(void);
1666 __owur
const SSL_METHOD
*tlsv1_1_server_method(void);
1667 __owur
const SSL_METHOD
*tlsv1_1_client_method(void);
1668 __owur
const SSL_METHOD
*tlsv1_2_method(void);
1669 __owur
const SSL_METHOD
*tlsv1_2_server_method(void);
1670 __owur
const SSL_METHOD
*tlsv1_2_client_method(void);
1671 __owur
const SSL_METHOD
*tlsv1_3_method(void);
1672 __owur
const SSL_METHOD
*tlsv1_3_server_method(void);
1673 __owur
const SSL_METHOD
*tlsv1_3_client_method(void);
1674 __owur
const SSL_METHOD
*dtlsv1_method(void);
1675 __owur
const SSL_METHOD
*dtlsv1_server_method(void);
1676 __owur
const SSL_METHOD
*dtlsv1_client_method(void);
1677 __owur
const SSL_METHOD
*dtls_bad_ver_client_method(void);
1678 __owur
const SSL_METHOD
*dtlsv1_2_method(void);
1679 __owur
const SSL_METHOD
*dtlsv1_2_server_method(void);
1680 __owur
const SSL_METHOD
*dtlsv1_2_client_method(void);
1682 extern const SSL3_ENC_METHOD TLSv1_enc_data
;
1683 extern const SSL3_ENC_METHOD TLSv1_1_enc_data
;
1684 extern const SSL3_ENC_METHOD TLSv1_2_enc_data
;
1685 extern const SSL3_ENC_METHOD TLSv1_3_enc_data
;
1686 extern const SSL3_ENC_METHOD SSLv3_enc_data
;
1687 extern const SSL3_ENC_METHOD DTLSv1_enc_data
;
1688 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data
;
1691 * Flags for SSL methods
1693 # define SSL_METHOD_NO_FIPS (1U<<0)
1694 # define SSL_METHOD_NO_SUITEB (1U<<1)
1696 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
1697 s_connect, enc_data) \
1698 const SSL_METHOD *func_name(void) \
1700 static const SSL_METHOD func_name##_data= { \
1714 ssl3_renegotiate_check, \
1717 ssl3_dispatch_alert, \
1720 ssl3_get_cipher_by_char, \
1721 ssl3_put_cipher_by_char, \
1725 tls1_default_timeout, \
1727 ssl_undefined_void_function, \
1728 ssl3_callback_ctrl, \
1729 ssl3_ctx_callback_ctrl, \
1731 return &func_name##_data; \
1734 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
1735 const SSL_METHOD *func_name(void) \
1737 static const SSL_METHOD func_name##_data= { \
1739 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
1751 ssl3_renegotiate_check, \
1754 ssl3_dispatch_alert, \
1757 ssl3_get_cipher_by_char, \
1758 ssl3_put_cipher_by_char, \
1762 ssl3_default_timeout, \
1764 ssl_undefined_void_function, \
1765 ssl3_callback_ctrl, \
1766 ssl3_ctx_callback_ctrl, \
1768 return &func_name##_data; \
1771 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
1772 s_connect, enc_data) \
1773 const SSL_METHOD *func_name(void) \
1775 static const SSL_METHOD func_name##_data= { \
1789 ssl3_renegotiate_check, \
1791 dtls1_write_app_data_bytes, \
1792 dtls1_dispatch_alert, \
1795 ssl3_get_cipher_by_char, \
1796 ssl3_put_cipher_by_char, \
1800 dtls1_default_timeout, \
1802 ssl_undefined_void_function, \
1803 ssl3_callback_ctrl, \
1804 ssl3_ctx_callback_ctrl, \
1806 return &func_name##_data; \
1809 struct openssl_ssl_test_functions
{
1810 int (*p_ssl_init_wbio_buffer
) (SSL
*s
);
1811 int (*p_ssl3_setup_buffers
) (SSL
*s
);
1814 const char *ssl_protocol_to_string(int version
);
1816 # ifndef OPENSSL_UNIT_TEST
1818 void ssl_clear_cipher_ctx(SSL
*s
);
1819 int ssl_clear_bad_session(SSL
*s
);
1820 __owur CERT
*ssl_cert_new(void);
1821 __owur CERT
*ssl_cert_dup(CERT
*cert
);
1822 void ssl_cert_clear_certs(CERT
*c
);
1823 void ssl_cert_free(CERT
*c
);
1824 __owur
int ssl_get_new_session(SSL
*s
, int session
);
1825 __owur
int ssl_get_prev_session(SSL
*s
, CLIENTHELLO_MSG
*hello
);
1826 __owur SSL_SESSION
*ssl_session_dup(SSL_SESSION
*src
, int ticket
);
1827 __owur
int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
);
1828 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
1829 __owur
int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
1830 const SSL_CIPHER
*const *bp
);
1831 __owur
STACK_OF(SSL_CIPHER
) *ssl_create_cipher_list(const SSL_METHOD
*meth
,
1832 STACK_OF(SSL_CIPHER
) **pref
,
1833 STACK_OF(SSL_CIPHER
)
1835 const char *rule_str
,
1837 void ssl_update_cache(SSL
*s
, int mode
);
1838 __owur
int ssl_cipher_get_evp(const SSL_SESSION
*s
, const EVP_CIPHER
**enc
,
1839 const EVP_MD
**md
, int *mac_pkey_type
,
1840 size_t *mac_secret_size
, SSL_COMP
**comp
,
1842 __owur
int ssl_cipher_get_overhead(const SSL_CIPHER
*c
, size_t *mac_overhead
,
1843 size_t *int_overhead
, size_t *blocksize
,
1844 size_t *ext_overhead
);
1845 __owur
int ssl_cipher_get_cert_index(const SSL_CIPHER
*c
);
1846 __owur
const SSL_CIPHER
*ssl_get_cipher_by_char(SSL
*ssl
,
1847 const unsigned char *ptr
);
1848 __owur
int ssl_cert_set0_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
1849 __owur
int ssl_cert_set1_chain(SSL
*s
, SSL_CTX
*ctx
, STACK_OF(X509
) *chain
);
1850 __owur
int ssl_cert_add0_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
1851 __owur
int ssl_cert_add1_chain_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
);
1852 __owur
int ssl_cert_select_current(CERT
*c
, X509
*x
);
1853 __owur
int ssl_cert_set_current(CERT
*c
, long arg
);
1854 __owur X509
*ssl_cert_get0_next_certificate(CERT
*c
, int first
);
1855 void ssl_cert_set_cert_cb(CERT
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
);
1857 __owur
int ssl_verify_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
);
1858 __owur
int ssl_add_cert_chain(SSL
*s
, WPACKET
*pkt
, CERT_PKEY
*cpk
);
1859 __owur
int ssl_build_cert_chain(SSL
*s
, SSL_CTX
*ctx
, int flags
);
1860 __owur
int ssl_cert_set_cert_store(CERT
*c
, X509_STORE
*store
, int chain
,
1863 __owur
int ssl_security(const SSL
*s
, int op
, int bits
, int nid
, void *other
);
1864 __owur
int ssl_ctx_security(const SSL_CTX
*ctx
, int op
, int bits
, int nid
,
1867 int ssl_undefined_function(SSL
*s
);
1868 __owur
int ssl_undefined_void_function(void);
1869 __owur
int ssl_undefined_const_function(const SSL
*s
);
1870 __owur CERT_PKEY
*ssl_get_server_send_pkey(SSL
*s
);
1871 __owur
int ssl_get_server_cert_serverinfo(SSL
*s
,
1872 const unsigned char **serverinfo
,
1873 size_t *serverinfo_length
);
1874 __owur EVP_PKEY
*ssl_get_sign_pkey(SSL
*s
, const SSL_CIPHER
*c
,
1875 const EVP_MD
**pmd
);
1876 __owur
int ssl_cert_type(const X509
*x
, const EVP_PKEY
*pkey
);
1877 void ssl_set_masks(SSL
*s
);
1878 __owur
STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
);
1879 __owur
int ssl_verify_alarm_type(long type
);
1880 void ssl_sort_cipher_list(void);
1881 void ssl_load_ciphers(void);
1882 __owur
int ssl_fill_hello_random(SSL
*s
, int server
, unsigned char *field
,
1884 __owur
int ssl_generate_master_secret(SSL
*s
, unsigned char *pms
, size_t pmslen
,
1886 __owur EVP_PKEY
*ssl_generate_pkey(EVP_PKEY
*pm
);
1887 __owur
int ssl_derive(SSL
*s
, EVP_PKEY
*privkey
, EVP_PKEY
*pubkey
,
1889 __owur EVP_PKEY
*ssl_dh_to_pkey(DH
*dh
);
1891 __owur
const SSL_CIPHER
*ssl3_get_cipher_by_char(const unsigned char *p
);
1892 __owur
int ssl3_put_cipher_by_char(const SSL_CIPHER
*c
, WPACKET
*pkt
,
1894 int ssl3_init_finished_mac(SSL
*s
);
1895 __owur
int ssl3_setup_key_block(SSL
*s
);
1896 __owur
int ssl3_change_cipher_state(SSL
*s
, int which
);
1897 void ssl3_cleanup_key_block(SSL
*s
);
1898 __owur
int ssl3_do_write(SSL
*s
, int type
);
1899 int ssl3_send_alert(SSL
*s
, int level
, int desc
);
1900 __owur
int ssl3_generate_master_secret(SSL
*s
, unsigned char *out
,
1901 unsigned char *p
, size_t len
,
1902 size_t *secret_size
);
1903 __owur
int ssl3_get_req_cert_type(SSL
*s
, WPACKET
*pkt
);
1904 __owur
int ssl3_num_ciphers(void);
1905 __owur
const SSL_CIPHER
*ssl3_get_cipher(unsigned int u
);
1906 int ssl3_renegotiate(SSL
*ssl
);
1907 int ssl3_renegotiate_check(SSL
*ssl
);
1908 __owur
int ssl3_dispatch_alert(SSL
*s
);
1909 __owur
size_t ssl3_final_finish_mac(SSL
*s
, const char *sender
, size_t slen
,
1911 __owur
int ssl3_finish_mac(SSL
*s
, const unsigned char *buf
, size_t len
);
1912 void ssl3_free_digest_list(SSL
*s
);
1913 __owur
unsigned long ssl3_output_cert_chain(SSL
*s
, WPACKET
*pkt
,
1915 __owur
const SSL_CIPHER
*ssl3_choose_cipher(SSL
*ssl
,
1916 STACK_OF(SSL_CIPHER
) *clnt
,
1917 STACK_OF(SSL_CIPHER
) *srvr
);
1918 __owur
int ssl3_digest_cached_records(SSL
*s
, int keep
);
1919 __owur
int ssl3_new(SSL
*s
);
1920 void ssl3_free(SSL
*s
);
1921 __owur
int ssl3_read(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
1922 __owur
int ssl3_peek(SSL
*s
, void *buf
, size_t len
, size_t *readbytes
);
1923 __owur
int ssl3_write(SSL
*s
, const void *buf
, size_t len
, size_t *written
);
1924 __owur
int ssl3_shutdown(SSL
*s
);
1925 void ssl3_clear(SSL
*s
);
1926 __owur
long ssl3_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
1927 __owur
long ssl3_ctx_ctrl(SSL_CTX
*s
, int cmd
, long larg
, void *parg
);
1928 __owur
long ssl3_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void));
1929 __owur
long ssl3_ctx_callback_ctrl(SSL_CTX
*s
, int cmd
, void (*fp
) (void));
1931 __owur
int ssl3_do_change_cipher_spec(SSL
*ssl
);
1932 __owur
long ssl3_default_timeout(void);
1934 __owur
int ssl3_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
1935 __owur
int tls_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
1936 __owur
int dtls1_set_handshake_header(SSL
*s
, WPACKET
*pkt
, int htype
);
1937 __owur
int dtls1_close_construct_packet(SSL
*s
, WPACKET
*pkt
, int htype
);
1938 __owur
int ssl3_handshake_write(SSL
*s
);
1940 __owur
int ssl_allow_compression(SSL
*s
);
1942 __owur
int ssl_version_supported(const SSL
*s
, int version
);
1944 __owur
int ssl_set_client_hello_version(SSL
*s
);
1945 __owur
int ssl_check_version_downgrade(SSL
*s
);
1946 __owur
int ssl_set_version_bound(int method_version
, int version
, int *bound
);
1947 __owur
int ssl_choose_server_version(SSL
*s
, CLIENTHELLO_MSG
*hello
);
1948 __owur
int ssl_choose_client_version(SSL
*s
, int version
);
1949 int ssl_get_client_min_max_version(const SSL
*s
, int *min_version
,
1952 __owur
long tls1_default_timeout(void);
1953 __owur
int dtls1_do_write(SSL
*s
, int type
);
1954 void dtls1_set_message_header(SSL
*s
,
1957 size_t frag_off
, size_t frag_len
);
1959 int dtls1_write_app_data_bytes(SSL
*s
, int type
, const void *buf_
, size_t len
,
1962 __owur
int dtls1_read_failed(SSL
*s
, int code
);
1963 __owur
int dtls1_buffer_message(SSL
*s
, int ccs
);
1964 __owur
int dtls1_retransmit_message(SSL
*s
, unsigned short seq
, int *found
);
1965 __owur
int dtls1_get_queue_priority(unsigned short seq
, int is_ccs
);
1966 int dtls1_retransmit_buffered_messages(SSL
*s
);
1967 void dtls1_clear_received_buffer(SSL
*s
);
1968 void dtls1_clear_sent_buffer(SSL
*s
);
1969 void dtls1_get_message_header(unsigned char *data
,
1970 struct hm_header_st
*msg_hdr
);
1971 __owur
long dtls1_default_timeout(void);
1972 __owur
struct timeval
*dtls1_get_timeout(SSL
*s
, struct timeval
*timeleft
);
1973 __owur
int dtls1_check_timeout_num(SSL
*s
);
1974 __owur
int dtls1_handle_timeout(SSL
*s
);
1975 void dtls1_start_timer(SSL
*s
);
1976 void dtls1_stop_timer(SSL
*s
);
1977 __owur
int dtls1_is_timer_expired(SSL
*s
);
1978 void dtls1_double_timeout(SSL
*s
);
1979 __owur
int dtls_raw_hello_verify_request(WPACKET
*pkt
, unsigned char *cookie
,
1981 __owur
int dtls1_send_newsession_ticket(SSL
*s
);
1982 __owur
size_t dtls1_min_mtu(SSL
*s
);
1983 void dtls1_hm_fragment_free(hm_fragment
*frag
);
1984 __owur
int dtls1_query_mtu(SSL
*s
);
1986 __owur
int tls1_new(SSL
*s
);
1987 void tls1_free(SSL
*s
);
1988 void tls1_clear(SSL
*s
);
1989 long tls1_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
1990 long tls1_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void));
1992 __owur
int dtls1_new(SSL
*s
);
1993 void dtls1_free(SSL
*s
);
1994 void dtls1_clear(SSL
*s
);
1995 long dtls1_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
);
1996 __owur
int dtls1_shutdown(SSL
*s
);
1998 __owur
int dtls1_dispatch_alert(SSL
*s
);
2000 __owur
int ssl_init_wbio_buffer(SSL
*s
);
2001 void ssl_free_wbio_buffer(SSL
*s
);
2003 __owur
int tls1_change_cipher_state(SSL
*s
, int which
);
2004 __owur
int tls1_setup_key_block(SSL
*s
);
2005 __owur
size_t tls1_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2007 __owur
int tls1_generate_master_secret(SSL
*s
, unsigned char *out
,
2008 unsigned char *p
, size_t len
,
2009 size_t *secret_size
);
2010 __owur
int tls13_setup_key_block(SSL
*s
);
2011 __owur
size_t tls13_final_finish_mac(SSL
*s
, const char *str
, size_t slen
,
2013 __owur
int tls13_change_cipher_state(SSL
*s
, int which
);
2014 __owur
int tls13_derive_secret(SSL
*s
, const unsigned char *insecret
,
2015 const unsigned char *label
, size_t labellen
,
2016 unsigned char *secret
);
2017 __owur
int tls13_derive_key(SSL
*s
, const unsigned char *secret
,
2018 unsigned char *key
, size_t keylen
);
2019 __owur
int tls13_derive_iv(SSL
*s
, const unsigned char *secret
,
2020 unsigned char *iv
, size_t ivlen
);
2021 __owur
int tls13_generate_early_secret(SSL
*s
, const unsigned char *insecret
,
2022 size_t insecretlen
);
2023 __owur
int tls13_generate_handshake_secret(SSL
*s
,
2024 const unsigned char *insecret
,
2025 size_t insecretlen
);
2026 __owur
int tls13_generate_master_secret(SSL
*s
, unsigned char *out
,
2027 unsigned char *prev
, size_t prevlen
,
2028 size_t *secret_size
);
2029 __owur
int tls1_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2030 const char *label
, size_t llen
,
2031 const unsigned char *p
, size_t plen
,
2033 __owur
int tls1_alert_code(int code
);
2034 __owur
int ssl3_alert_code(int code
);
2035 __owur
int ssl_ok(SSL
*s
);
2037 # ifndef OPENSSL_NO_EC
2038 __owur
int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
);
2041 SSL_COMP
*ssl3_comp_find(STACK_OF(SSL_COMP
) *sk
, int n
);
2043 # ifndef OPENSSL_NO_EC
2044 /* Flags values from tls1_ec_curve_id2nid() */
2045 /* Mask for curve type */
2046 # define TLS_CURVE_TYPE 0x3
2047 # define TLS_CURVE_PRIME 0x0
2048 # define TLS_CURVE_CHAR2 0x1
2049 # define TLS_CURVE_CUSTOM 0x2
2050 __owur
int tls1_ec_curve_id2nid(int curve_id
, unsigned int *pflags
);
2051 __owur
int tls1_ec_nid2curve_id(int nid
);
2052 __owur
int tls1_check_curve(SSL
*s
, const unsigned char *p
, size_t len
);
2053 __owur
int tls1_shared_group(SSL
*s
, int nmatch
);
2054 __owur
int tls1_set_groups(unsigned char **pext
, size_t *pextlen
,
2055 int *curves
, size_t ncurves
);
2056 __owur
int tls1_set_groups_list(unsigned char **pext
, size_t *pextlen
,
2058 __owur
int tls1_check_ec_tmp_key(SSL
*s
, unsigned long id
);
2059 __owur EVP_PKEY
*ssl_generate_pkey_curve(int id
);
2060 # endif /* OPENSSL_NO_EC */
2062 __owur
int tls1_shared_list(SSL
*s
,
2063 const unsigned char *l1
, size_t l1len
,
2064 const unsigned char *l2
, size_t l2len
, int nmatch
);
2065 __owur
int ssl_add_clienthello_tlsext(SSL
*s
, WPACKET
*pkt
, int *al
);
2066 __owur
int ssl_add_serverhello_tlsext(SSL
*s
, WPACKET
*pkt
, int *al
);
2067 __owur
int ssl_parse_clienthello_tlsext(SSL
*s
, CLIENTHELLO_MSG
*hello
);
2068 void ssl_set_default_md(SSL
*s
);
2069 __owur
int tls1_set_server_sigalgs(SSL
*s
);
2070 __owur
int ssl_check_clienthello_tlsext_late(SSL
*s
, int *al
);
2071 __owur
int ssl_parse_serverhello_tlsext(SSL
*s
, PACKET
*pkt
);
2072 __owur
int ssl_prepare_clienthello_tlsext(SSL
*s
);
2073 __owur
int ssl_prepare_serverhello_tlsext(SSL
*s
);
2074 __owur RAW_EXTENSION
*tls_get_extension_by_type(RAW_EXTENSION
*exts
,
2077 __owur
int tls_get_ticket_from_client(SSL
*s
, CLIENTHELLO_MSG
*hello
,
2079 __owur
int tls_check_client_ems_support(SSL
*s
, const CLIENTHELLO_MSG
*hello
);
2081 __owur
int tls12_get_sigandhash(WPACKET
*pkt
, const EVP_PKEY
*pk
,
2083 __owur
int tls12_get_sigid(const EVP_PKEY
*pk
);
2084 __owur
const EVP_MD
*tls12_get_hash(unsigned char hash_alg
);
2085 void ssl_set_sig_mask(uint32_t *pmask_a
, SSL
*s
, int op
);
2087 __owur
int tls1_set_sigalgs_list(CERT
*c
, const char *str
, int client
);
2088 __owur
int tls1_set_sigalgs(CERT
*c
, const int *salg
, size_t salglen
,
2090 int tls1_check_chain(SSL
*s
, X509
*x
, EVP_PKEY
*pk
, STACK_OF(X509
) *chain
,
2092 void tls1_set_cert_validity(SSL
*s
);
2094 # ifndef OPENSSL_NO_CT
2095 __owur
int ssl_validate_ct(SSL
*s
);
2098 # ifndef OPENSSL_NO_DH
2099 __owur DH
*ssl_get_auto_dh(SSL
*s
);
2102 __owur
int ssl_security_cert(SSL
*s
, SSL_CTX
*ctx
, X509
*x
, int vfy
, int is_ee
);
2103 __owur
int ssl_security_cert_chain(SSL
*s
, STACK_OF(X509
) *sk
, X509
*ex
,
2106 __owur EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
);
2107 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
);
2108 __owur
int ssl_add_serverhello_renegotiate_ext(SSL
*s
, WPACKET
*pkt
);
2109 __owur
int ssl_parse_serverhello_renegotiate_ext(SSL
*s
, PACKET
*pkt
, int *al
);
2110 __owur
int ssl_parse_clienthello_renegotiate_ext(SSL
*s
, PACKET
*pkt
, int *al
);
2111 __owur
long ssl_get_algorithm2(SSL
*s
);
2112 __owur
int tls12_copy_sigalgs(SSL
*s
, WPACKET
*pkt
,
2113 const unsigned char *psig
, size_t psiglen
);
2114 __owur
int tls1_save_sigalgs(SSL
*s
, const unsigned char *data
, size_t dsize
);
2115 __owur
int tls1_process_sigalgs(SSL
*s
);
2116 __owur
size_t tls12_get_psigalgs(SSL
*s
, const unsigned char **psigs
);
2117 __owur
int tls12_check_peer_sigalg(const EVP_MD
**pmd
, SSL
*s
,
2118 const unsigned char *sig
, EVP_PKEY
*pkey
);
2119 void ssl_set_client_disabled(SSL
*s
);
2120 __owur
int ssl_cipher_disabled(SSL
*s
, const SSL_CIPHER
*c
, int op
);
2122 __owur
int ssl_parse_clienthello_use_srtp_ext(SSL
*s
, PACKET
*pkt
, int *al
);
2123 __owur
int ssl_parse_serverhello_use_srtp_ext(SSL
*s
, PACKET
*pkt
, int *al
);
2125 __owur
int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
2127 __owur
const EVP_MD
*ssl_md(int idx
);
2128 __owur
const EVP_MD
*ssl_handshake_md(SSL
*s
);
2129 __owur
const EVP_MD
*ssl_prf_md(SSL
*s
);
2132 __owur
char ssl3_cbc_record_digest_supported(const EVP_MD_CTX
*ctx
);
2133 __owur
int ssl3_cbc_digest_record(const EVP_MD_CTX
*ctx
,
2134 unsigned char *md_out
,
2135 size_t *md_out_size
,
2136 const unsigned char header
[13],
2137 const unsigned char *data
,
2138 size_t data_plus_mac_size
,
2139 size_t data_plus_mac_plus_padding_size
,
2140 const unsigned char *mac_secret
,
2141 size_t mac_secret_length
, char is_sslv3
);
2143 __owur
int tls_fips_digest_extra(const EVP_CIPHER_CTX
*cipher_ctx
,
2144 EVP_MD_CTX
*mac_ctx
, const unsigned char *data
,
2145 size_t data_len
, size_t orig_len
);
2147 __owur
int srp_generate_server_master_secret(SSL
*s
);
2148 __owur
int srp_generate_client_master_secret(SSL
*s
);
2149 __owur
int srp_verify_server_param(SSL
*s
, int *al
);
2153 void custom_ext_init(custom_ext_methods
*meths
);
2155 __owur
int custom_ext_parse(SSL
*s
, int server
,
2156 unsigned int ext_type
,
2157 const unsigned char *ext_data
, size_t ext_size
,
2159 __owur
int custom_ext_add(SSL
*s
, int server
, WPACKET
*pkt
, int *al
);
2161 __owur
int custom_exts_copy(custom_ext_methods
*dst
,
2162 const custom_ext_methods
*src
);
2163 void custom_exts_free(custom_ext_methods
*exts
);
2165 void ssl_comp_free_compression_methods_int(void);
2169 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2170 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers