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"
70 # ifdef OPENSSL_BUILD_SHLIBSSL
71 # undef OPENSSL_EXTERN
72 # define OPENSSL_EXTERN OPENSSL_EXPORT
77 # define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
78 l|=(((unsigned long)(*((c)++)))<< 8), \
79 l|=(((unsigned long)(*((c)++)))<<16), \
80 l|=(((unsigned long)(*((c)++)))<<24))
82 /* NOTE - c is not incremented as per c2l */
83 # define c2ln(c,l1,l2,n) { \
87 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
88 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
89 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
90 case 5: l2|=((unsigned long)(*(--(c)))); \
91 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
92 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
93 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
94 case 1: l1|=((unsigned long)(*(--(c)))); \
98 # define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
99 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
100 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
101 *((c)++)=(unsigned char)(((l)>>24)&0xff))
103 # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
104 l|=((unsigned long)(*((c)++)))<<16, \
105 l|=((unsigned long)(*((c)++)))<< 8, \
106 l|=((unsigned long)(*((c)++))))
108 # define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
109 l|=((uint64_t)(*((c)++)))<<48, \
110 l|=((uint64_t)(*((c)++)))<<40, \
111 l|=((uint64_t)(*((c)++)))<<32, \
112 l|=((uint64_t)(*((c)++)))<<24, \
113 l|=((uint64_t)(*((c)++)))<<16, \
114 l|=((uint64_t)(*((c)++)))<< 8, \
115 l|=((uint64_t)(*((c)++))))
118 # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
119 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
120 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
121 *((c)++)=(unsigned char)(((l) )&0xff))
123 # define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
124 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
125 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
126 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
127 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
128 *((c)++)=(unsigned char)(((l) )&0xff))
130 # define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
131 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
132 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
133 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
134 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
135 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
136 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
137 *((c)++)=(unsigned char)(((l) )&0xff))
139 /* NOTE - c is not incremented as per l2c */
140 # define l2cn(l1,l2,c,n) { \
143 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
144 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
145 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
146 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
147 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
148 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
149 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
150 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
154 # define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
155 (((unsigned int)((c)[1])) )),(c)+=2)
156 # define s2n(s,c) (((c)[0]=(unsigned char)(((s)>> 8)&0xff), \
157 (c)[1]=(unsigned char)(((s) )&0xff)),(c)+=2)
159 # define n2l3(c,l) ((l =(((unsigned long)((c)[0]))<<16)| \
160 (((unsigned long)((c)[1]))<< 8)| \
161 (((unsigned long)((c)[2])) )),(c)+=3)
163 # define l2n3(l,c) (((c)[0]=(unsigned char)(((l)>>16)&0xff), \
164 (c)[1]=(unsigned char)(((l)>> 8)&0xff), \
165 (c)[2]=(unsigned char)(((l) )&0xff)),(c)+=3)
167 /* DTLS version numbers are strange because they're inverted. Except
168 * for DTLS1_BAD_VER, which should be considered "lower" than the rest. */
169 #define dtls_ver_ordinal(v1) (((v1) == DTLS1_BAD_VER) ? 0xff00 : (v1))
170 #define DTLS_VERSION_GT(v1, v2) (dtls_ver_ordinal(v1) < dtls_ver_ordinal(v2))
171 #define DTLS_VERSION_GE(v1, v2) (dtls_ver_ordinal(v1) <= dtls_ver_ordinal(v2))
172 #define DTLS_VERSION_LT(v1, v2) (dtls_ver_ordinal(v1) > dtls_ver_ordinal(v2))
173 #define DTLS_VERSION_LE(v1, v2) (dtls_ver_ordinal(v1) >= dtls_ver_ordinal(v2))
177 # define SSL_DECRYPT 0
178 # define SSL_ENCRYPT 1
180 # define TWO_BYTE_BIT 0x80
181 # define SEC_ESC_BIT 0x40
182 # define TWO_BYTE_MASK 0x7fff
183 # define THREE_BYTE_MASK 0x3fff
185 # define INC32(a) ((a)=((a)+1)&0xffffffffL)
186 # define DEC32(a) ((a)=((a)-1)&0xffffffffL)
187 # define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
190 * Define the Bitmasks for SSL_CIPHER.algorithms.
191 * This bits are used packed as dense as possible. If new methods/ciphers
192 * etc will be added, the bits a likely to change, so this information
193 * is for internal library use only, even though SSL_CIPHER.algorithms
194 * can be publicly accessed.
195 * Use the according functions for cipher management instead.
197 * The bit mask handling in the selection and sorting scheme in
198 * ssl_create_cipher_list() has only limited capabilities, reflecting
199 * that the different entities within are mutually exclusive:
200 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
203 /* Bits for algorithm_mkey (key exchange algorithm) */
204 /* RSA key exchange */
205 # define SSL_kRSA 0x00000001U
206 /* tmp DH key no DH cert */
207 # define SSL_kDHE 0x00000002U
209 # define SSL_kEDH SSL_kDHE
211 # define SSL_kECDHE 0x00000004U
213 # define SSL_kEECDH SSL_kECDHE
215 # define SSL_kPSK 0x00000008U
216 /* GOST key exchange */
217 # define SSL_kGOST 0x00000010U
219 # define SSL_kSRP 0x00000020U
221 # define SSL_kRSAPSK 0x00000040U
222 # define SSL_kECDHEPSK 0x00000080U
223 # define SSL_kDHEPSK 0x00000100U
227 #define SSL_PSK (SSL_kPSK | SSL_kRSAPSK | SSL_kECDHEPSK | SSL_kDHEPSK)
229 /* Bits for algorithm_auth (server authentication) */
231 # define SSL_aRSA 0x00000001U
233 # define SSL_aDSS 0x00000002U
234 /* no auth (i.e. use ADH or AECDH) */
235 # define SSL_aNULL 0x00000004U
237 # define SSL_aECDSA 0x00000008U
239 # define SSL_aPSK 0x00000010U
240 /* GOST R 34.10-2001 signature auth */
241 # define SSL_aGOST01 0x00000020U
243 # define SSL_aSRP 0x00000040U
244 /* GOST R 34.10-2012 signature auth */
245 # define SSL_aGOST12 0x00000080U
247 /* Bits for algorithm_enc (symmetric encryption) */
248 # define SSL_DES 0x00000001U
249 # define SSL_3DES 0x00000002U
250 # define SSL_RC4 0x00000004U
251 # define SSL_RC2 0x00000008U
252 # define SSL_IDEA 0x00000010U
253 # define SSL_eNULL 0x00000020U
254 # define SSL_AES128 0x00000040U
255 # define SSL_AES256 0x00000080U
256 # define SSL_CAMELLIA128 0x00000100U
257 # define SSL_CAMELLIA256 0x00000200U
258 # define SSL_eGOST2814789CNT 0x00000400U
259 # define SSL_SEED 0x00000800U
260 # define SSL_AES128GCM 0x00001000U
261 # define SSL_AES256GCM 0x00002000U
262 # define SSL_AES128CCM 0x00004000U
263 # define SSL_AES256CCM 0x00008000U
264 # define SSL_AES128CCM8 0x00010000U
265 # define SSL_AES256CCM8 0x00020000U
266 # define SSL_eGOST2814789CNT12 0x00040000U
267 # define SSL_CHACHA20POLY1305 0x00080000U
269 # define SSL_AESGCM (SSL_AES128GCM | SSL_AES256GCM)
270 # define SSL_AESCCM (SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8)
271 # define SSL_AES (SSL_AES128|SSL_AES256|SSL_AESGCM|SSL_AESCCM)
272 # define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
273 # define SSL_CHACHA20 (SSL_CHACHA20POLY1305)
275 /* Bits for algorithm_mac (symmetric authentication) */
277 # define SSL_MD5 0x00000001U
278 # define SSL_SHA1 0x00000002U
279 # define SSL_GOST94 0x00000004U
280 # define SSL_GOST89MAC 0x00000008U
281 # define SSL_SHA256 0x00000010U
282 # define SSL_SHA384 0x00000020U
283 /* Not a real MAC, just an indication it is part of cipher */
284 # define SSL_AEAD 0x00000040U
285 # define SSL_GOST12_256 0x00000080U
286 # define SSL_GOST89MAC12 0x00000100U
287 # define SSL_GOST12_512 0x00000200U
290 * When adding new digest in the ssl_ciph.c and increment SSL_MD_NUM_IDX make
291 * sure to update this constant too
294 # define SSL_MD_MD5_IDX 0
295 # define SSL_MD_SHA1_IDX 1
296 # define SSL_MD_GOST94_IDX 2
297 # define SSL_MD_GOST89MAC_IDX 3
298 # define SSL_MD_SHA256_IDX 4
299 # define SSL_MD_SHA384_IDX 5
300 # define SSL_MD_GOST12_256_IDX 6
301 # define SSL_MD_GOST89MAC12_IDX 7
302 # define SSL_MD_GOST12_512_IDX 8
303 # define SSL_MD_MD5_SHA1_IDX 9
304 # define SSL_MD_SHA224_IDX 10
305 # define SSL_MD_SHA512_IDX 11
306 # define SSL_MAX_DIGEST 12
308 /* Bits for algorithm2 (handshake digests and other extra flags) */
310 /* Bits 0-7 are handshake MAC */
311 # define SSL_HANDSHAKE_MAC_MASK 0xFF
312 # define SSL_HANDSHAKE_MAC_MD5_SHA1 SSL_MD_MD5_SHA1_IDX
313 # define SSL_HANDSHAKE_MAC_SHA256 SSL_MD_SHA256_IDX
314 # define SSL_HANDSHAKE_MAC_SHA384 SSL_MD_SHA384_IDX
315 # define SSL_HANDSHAKE_MAC_GOST94 SSL_MD_GOST94_IDX
316 # define SSL_HANDSHAKE_MAC_GOST12_256 SSL_MD_GOST12_256_IDX
317 # define SSL_HANDSHAKE_MAC_GOST12_512 SSL_MD_GOST12_512_IDX
318 # define SSL_HANDSHAKE_MAC_DEFAULT SSL_HANDSHAKE_MAC_MD5_SHA1
320 /* Bits 8-15 bits are PRF */
321 # define TLS1_PRF_DGST_SHIFT 8
322 # define TLS1_PRF_SHA1_MD5 (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
323 # define TLS1_PRF_SHA256 (SSL_MD_SHA256_IDX << TLS1_PRF_DGST_SHIFT)
324 # define TLS1_PRF_SHA384 (SSL_MD_SHA384_IDX << TLS1_PRF_DGST_SHIFT)
325 # define TLS1_PRF_GOST94 (SSL_MD_GOST94_IDX << TLS1_PRF_DGST_SHIFT)
326 # define TLS1_PRF_GOST12_256 (SSL_MD_GOST12_256_IDX << TLS1_PRF_DGST_SHIFT)
327 # define TLS1_PRF_GOST12_512 (SSL_MD_GOST12_512_IDX << TLS1_PRF_DGST_SHIFT)
328 # define TLS1_PRF (SSL_MD_MD5_SHA1_IDX << TLS1_PRF_DGST_SHIFT)
331 * Stream MAC for GOST ciphersuites from cryptopro draft (currently this also
332 * goes into algorithm2)
334 # define TLS1_STREAM_MAC 0x10000
336 # define SSL_STRONG_MASK 0x0000001FU
337 # define SSL_DEFAULT_MASK 0X00000020U
339 # define SSL_STRONG_NONE 0x00000001U
340 # define SSL_LOW 0x00000002U
341 # define SSL_MEDIUM 0x00000004U
342 # define SSL_HIGH 0x00000008U
343 # define SSL_FIPS 0x00000010U
344 # define SSL_NOT_DEFAULT 0x00000020U
346 /* we have used 0000003f - 26 bits left to go */
348 /* Check if an SSL structure is using DTLS */
349 # define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
350 /* See if we need explicit IV */
351 # define SSL_USE_EXPLICIT_IV(s) \
352 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
354 * See if we use signature algorithms extension and signature algorithm
357 # define SSL_USE_SIGALGS(s) \
358 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
360 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
361 * apply to others in future.
363 # define SSL_USE_TLS1_2_CIPHERS(s) \
364 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
366 * Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
367 * flags because it may not be set to correct version yet.
369 # define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
370 ((!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION) || \
371 (SSL_IS_DTLS(s) && DTLS_VERSION_GE(s->client_version, DTLS1_2_VERSION)))
373 * Determine if a client should send signature algorithms extension:
374 * as with TLS1.2 cipher we can't rely on method flags.
376 # define SSL_CLIENT_USE_SIGALGS(s) \
377 SSL_CLIENT_USE_TLS1_2_CIPHERS(s)
379 # define SSL_USE_ETM(s) (s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC)
381 /* Mostly for SSLv3 */
382 # define SSL_PKEY_RSA_ENC 0
383 # define SSL_PKEY_RSA_SIGN 1
384 # define SSL_PKEY_DSA_SIGN 2
385 # define SSL_PKEY_ECC 3
386 # define SSL_PKEY_GOST01 4
387 # define SSL_PKEY_GOST12_256 5
388 # define SSL_PKEY_GOST12_512 6
389 # define SSL_PKEY_NUM 7
391 * Pseudo-constant. GOST cipher suites can use different certs for 1
392 * SSL_CIPHER. So let's see which one we have in fact.
394 # define SSL_PKEY_GOST_EC SSL_PKEY_NUM+1
397 * SSL_kRSA <- RSA_ENC
398 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
399 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
400 * SSL_aRSA <- RSA_ENC | RSA_SIGN
401 * SSL_aDSS <- DSA_SIGN
405 #define CERT_INVALID 0
406 #define CERT_PUBLIC_KEY 1
407 #define CERT_PRIVATE_KEY 2
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 uint32_t id; /* id, 4 bytes, first is version */
419 * changed in 1.0.0: these four used to be portions of a single value
422 uint32_t algorithm_mkey; /* key exchange algorithm */
423 uint32_t algorithm_auth; /* server authentication */
424 uint32_t algorithm_enc; /* symmetric encryption */
425 uint32_t algorithm_mac; /* symmetric authentication */
426 int min_tls; /* minimum SSL/TLS protocol version */
427 int max_tls; /* maximum SSL/TLS protocol version */
428 int min_dtls; /* minimum DTLS protocol version */
429 int max_dtls; /* maximum DTLS protocol version */
430 uint32_t algo_strength; /* strength and export flags */
431 uint32_t algorithm2; /* Extra flags */
432 int32_t strength_bits; /* Number of bits really used */
433 uint32_t alg_bits; /* Number of bits for algorithm */
436 /* Used to hold SSL/TLS functions */
437 struct ssl_method_st {
441 int (*ssl_new) (SSL *s);
442 void (*ssl_clear) (SSL *s);
443 void (*ssl_free) (SSL *s);
444 int (*ssl_accept) (SSL *s);
445 int (*ssl_connect) (SSL *s);
446 int (*ssl_read) (SSL *s, void *buf, int len);
447 int (*ssl_peek) (SSL *s, void *buf, int len);
448 int (*ssl_write) (SSL *s, const void *buf, int len);
449 int (*ssl_shutdown) (SSL *s);
450 int (*ssl_renegotiate) (SSL *s);
451 int (*ssl_renegotiate_check) (SSL *s);
452 int (*ssl_read_bytes) (SSL *s, int type, int *recvd_type,
453 unsigned char *buf, int len, int peek);
454 int (*ssl_write_bytes) (SSL *s, int type, const void *buf_, int len);
455 int (*ssl_dispatch_alert) (SSL *s);
456 long (*ssl_ctrl) (SSL *s, int cmd, long larg, void *parg);
457 long (*ssl_ctx_ctrl) (SSL_CTX *ctx, int cmd, long larg, void *parg);
458 const SSL_CIPHER *(*get_cipher_by_char) (const unsigned char *ptr);
459 int (*put_cipher_by_char) (const SSL_CIPHER *cipher, unsigned char *ptr);
460 int (*ssl_pending) (const SSL *s);
461 int (*num_ciphers) (void);
462 const SSL_CIPHER *(*get_cipher) (unsigned ncipher);
463 long (*get_timeout) (void);
464 const struct ssl3_enc_method *ssl3_enc; /* Extra SSLv3/TLS stuff */
465 int (*ssl_version) (void);
466 long (*ssl_callback_ctrl) (SSL *s, int cb_id, void (*fp) (void));
467 long (*ssl_ctx_callback_ctrl) (SSL_CTX *s, int cb_id, void (*fp) (void));
471 * Lets make this into an ASN.1 type structure as follows
472 * SSL_SESSION_ID ::= SEQUENCE {
473 * version INTEGER, -- structure version number
474 * SSLversion INTEGER, -- SSL version number
475 * Cipher OCTET STRING, -- the 3 byte cipher ID
476 * Session_ID OCTET STRING, -- the Session ID
477 * Master_key OCTET STRING, -- the master key
478 * Key_Arg [ 0 ] IMPLICIT OCTET STRING, -- the optional Key argument
479 * Time [ 1 ] EXPLICIT INTEGER, -- optional Start Time
480 * Timeout [ 2 ] EXPLICIT INTEGER, -- optional Timeout ins seconds
481 * Peer [ 3 ] EXPLICIT X509, -- optional Peer Certificate
482 * Session_ID_context [ 4 ] EXPLICIT OCTET STRING, -- the Session ID context
483 * Verify_result [ 5 ] EXPLICIT INTEGER, -- X509_V_... code for `Peer'
484 * HostName [ 6 ] EXPLICIT OCTET STRING, -- optional HostName from servername TLS extension
485 * PSK_identity_hint [ 7 ] EXPLICIT OCTET STRING, -- optional PSK identity hint
486 * PSK_identity [ 8 ] EXPLICIT OCTET STRING, -- optional PSK identity
487 * Ticket_lifetime_hint [9] EXPLICIT INTEGER, -- server's lifetime hint for session ticket
488 * Ticket [10] EXPLICIT OCTET STRING, -- session ticket (clients only)
489 * Compression_meth [11] EXPLICIT OCTET STRING, -- optional compression method
490 * SRP_username [ 12 ] EXPLICIT OCTET STRING -- optional SRP username
491 * flags [ 13 ] EXPLICIT INTEGER -- optional flags
493 * Look in ssl/ssl_asn1.c for more details
494 * I'm using EXPLICIT tags so I can read the damn things using asn1parse :-).
496 struct ssl_session_st {
497 int ssl_version; /* what ssl version session info is being
499 int master_key_length;
500 unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
501 /* session_id - valid? */
502 unsigned int session_id_length;
503 unsigned char session_id[SSL_MAX_SSL_SESSION_ID_LENGTH];
505 * this is used to determine whether the session is being reused in the
506 * appropriate context. It is up to the application to set this, via
509 unsigned int sid_ctx_length;
510 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
511 # ifndef OPENSSL_NO_PSK
512 char *psk_identity_hint;
516 * Used to indicate that session resumption is not allowed. Applications
517 * can also set this bit for a new session via not_resumable_session_cb
518 * to disable session caching and tickets.
521 /* This is the cert and type for the other end. */
524 /* Certificate chain peer sent */
525 STACK_OF(X509) *peer_chain;
527 * when app_verify_callback accepts a session where the peer's
528 * certificate is not ok, we must remember the error for session reuse:
530 long verify_result; /* only for servers */
534 unsigned int compress_meth; /* Need to lookup the method */
535 const SSL_CIPHER *cipher;
536 unsigned long cipher_id; /* when ASN.1 loaded, this needs to be used
537 * to load the 'cipher' structure */
538 STACK_OF(SSL_CIPHER) *ciphers; /* shared ciphers? */
539 CRYPTO_EX_DATA ex_data; /* application specific data */
541 * These are used to make removal of session-ids more efficient and to
542 * implement a maximum cache size.
544 struct ssl_session_st *prev, *next;
545 char *tlsext_hostname;
546 # ifndef OPENSSL_NO_EC
547 size_t tlsext_ecpointformatlist_length;
548 unsigned char *tlsext_ecpointformatlist; /* peer's list */
549 size_t tlsext_ellipticcurvelist_length;
550 unsigned char *tlsext_ellipticcurvelist; /* peer's list */
551 # endif /* OPENSSL_NO_EC */
553 unsigned char *tlsext_tick; /* Session ticket */
554 size_t tlsext_ticklen; /* Session ticket length */
555 unsigned long tlsext_tick_lifetime_hint; /* Session lifetime hint in seconds */
556 # ifndef OPENSSL_NO_SRP
563 /* Extended master secret support */
564 # define SSL_SESS_FLAG_EXTMS 0x1
567 # ifndef OPENSSL_NO_SRP
569 typedef struct srp_ctx_st {
570 /* param for all the callbacks */
572 /* set client Hello login callback */
573 int (*TLS_ext_srp_username_callback) (SSL *, int *, void *);
574 /* set SRP N/g param callback for verification */
575 int (*SRP_verify_param_callback) (SSL *, void *);
576 /* set SRP client passwd callback */
577 char *(*SRP_give_srp_client_pwd_callback) (SSL *, void *);
579 BIGNUM *N, *g, *s, *B, *A;
583 unsigned long srp_Mask;
594 DEFINE_LHASH_OF(SSL_SESSION);
595 /* Needed in ssl_cert.c */
596 DEFINE_LHASH_OF(X509_NAME);
598 #define TLSEXT_KEYNAME_LENGTH 16
601 const SSL_METHOD *method;
602 STACK_OF(SSL_CIPHER) *cipher_list;
603 /* same as above but sorted for lookup */
604 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
605 struct x509_store_st /* X509_STORE */ *cert_store;
606 LHASH_OF(SSL_SESSION) *sessions;
608 * Most session-ids that will be cached, default is
609 * SSL_SESSION_CACHE_MAX_SIZE_DEFAULT. 0 is unlimited.
611 unsigned long session_cache_size;
612 struct ssl_session_st *session_cache_head;
613 struct ssl_session_st *session_cache_tail;
615 * This can have one of 2 values, ored together, SSL_SESS_CACHE_CLIENT,
616 * SSL_SESS_CACHE_SERVER, Default is SSL_SESSION_CACHE_SERVER, which
617 * means only SSL_accept which cache SSL_SESSIONS.
619 uint32_t session_cache_mode;
621 * If timeout is not 0, it is the default timeout value set when
622 * SSL_new() is called. This has been put in to make life easier to set
625 long session_timeout;
627 * If this callback is not null, it will be called each time a session id
628 * is added to the cache. If this function returns 1, it means that the
629 * callback will do a SSL_SESSION_free() when it has finished using it.
630 * Otherwise, on 0, it means the callback has finished with it. If
631 * remove_session_cb is not null, it will be called when a session-id is
632 * removed from the cache. After the call, OpenSSL will
633 * SSL_SESSION_free() it.
635 int (*new_session_cb) (struct ssl_st *ssl, SSL_SESSION *sess);
636 void (*remove_session_cb) (struct ssl_ctx_st *ctx, SSL_SESSION *sess);
637 SSL_SESSION *(*get_session_cb) (struct ssl_st *ssl,
638 const unsigned char *data, int len,
641 int sess_connect; /* SSL new conn - started */
642 int sess_connect_renegotiate; /* SSL reneg - requested */
643 int sess_connect_good; /* SSL new conne/reneg - finished */
644 int sess_accept; /* SSL new accept - started */
645 int sess_accept_renegotiate; /* SSL reneg - requested */
646 int sess_accept_good; /* SSL accept/reneg - finished */
647 int sess_miss; /* session lookup misses */
648 int sess_timeout; /* reuse attempt on timeouted session */
649 int sess_cache_full; /* session removed due to full cache */
650 int sess_hit; /* session reuse actually done */
651 int sess_cb_hit; /* session-id that was not in the cache was
652 * passed back via the callback. This
653 * indicates that the application is
654 * supplying session-id's from other
655 * processes - spooky :-) */
660 /* if defined, these override the X509_verify_cert() calls */
661 int (*app_verify_callback) (X509_STORE_CTX *, void *);
662 void *app_verify_arg;
664 * before OpenSSL 0.9.7, 'app_verify_arg' was ignored
665 * ('app_verify_callback' was called with just one argument)
668 /* Default password callback. */
669 pem_password_cb *default_passwd_callback;
671 /* Default password callback user data. */
672 void *default_passwd_callback_userdata;
674 /* get client cert callback */
675 int (*client_cert_cb) (SSL *ssl, X509 **x509, EVP_PKEY **pkey);
677 /* cookie generate callback */
678 int (*app_gen_cookie_cb) (SSL *ssl, unsigned char *cookie,
679 unsigned int *cookie_len);
681 /* verify cookie callback */
682 int (*app_verify_cookie_cb) (SSL *ssl, const unsigned char *cookie,
683 unsigned int cookie_len);
685 CRYPTO_EX_DATA ex_data;
687 const EVP_MD *md5; /* For SSLv3/TLSv1 'ssl3-md5' */
688 const EVP_MD *sha1; /* For SSLv3/TLSv1 'ssl3->sha1' */
690 STACK_OF(X509) *extra_certs;
691 STACK_OF(SSL_COMP) *comp_methods; /* stack of SSL_COMP, SSLv3/TLSv1 */
693 /* Default values used when no per-SSL value is defined follow */
695 /* used if SSL's info_callback is NULL */
696 void (*info_callback) (const SSL *ssl, int type, int val);
698 /* what we put in client cert requests */
699 STACK_OF(X509_NAME) *client_CA;
702 * Default values to use in SSL structures follow (these are copied by
708 int min_proto_version;
709 int max_proto_version;
712 struct cert_st /* CERT */ *cert;
715 /* callback that allows applications to peek at protocol messages */
716 void (*msg_callback) (int write_p, int version, int content_type,
717 const void *buf, size_t len, SSL *ssl, void *arg);
718 void *msg_callback_arg;
720 uint32_t verify_mode;
721 unsigned int sid_ctx_length;
722 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
723 /* called 'verify_callback' in the SSL */
724 int (*default_verify_callback) (int ok, X509_STORE_CTX *ctx);
726 /* Default generate session ID callback. */
727 GEN_SESSION_CB generate_session_id;
729 X509_VERIFY_PARAM *param;
733 # ifndef OPENSSL_NO_CT
734 CTLOG_STORE *ctlog_store; /* CT Log Store */
736 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
737 * If they are not, the connection should be aborted.
739 ssl_ct_validation_cb ct_validation_callback;
740 void *ct_validation_callback_arg;
744 * If we're using more than one pipeline how should we divide the data
745 * up between the pipes?
747 unsigned int split_send_fragment;
749 * Maximum amount of data to send in one fragment. actual record size can
750 * be more than this due to padding and MAC overheads.
752 unsigned int max_send_fragment;
754 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
755 unsigned int max_pipelines;
757 /* The default read buffer length to use (0 means not set) */
758 size_t default_read_buf_len;
760 # ifndef OPENSSL_NO_ENGINE
762 * Engine to pass requests for client certs to
764 ENGINE *client_cert_engine;
767 /* TLS extensions servername callback */
768 int (*tlsext_servername_callback) (SSL *, int *, void *);
769 void *tlsext_servername_arg;
770 /* RFC 4507 session ticket keys */
771 unsigned char tlsext_tick_key_name[TLSEXT_KEYNAME_LENGTH];
772 unsigned char tlsext_tick_hmac_key[32];
773 unsigned char tlsext_tick_aes_key[32];
774 /* Callback to support customisation of ticket key setting */
775 int (*tlsext_ticket_key_cb) (SSL *ssl,
776 unsigned char *name, unsigned char *iv,
777 EVP_CIPHER_CTX *ectx,
778 HMAC_CTX *hctx, int enc);
780 /* certificate status request info */
781 /* Callback for status request */
782 int (*tlsext_status_cb) (SSL *ssl, void *arg);
783 void *tlsext_status_arg;
785 # ifndef OPENSSL_NO_PSK
786 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
788 unsigned int max_identity_len,
790 unsigned int max_psk_len);
791 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
793 unsigned int max_psk_len);
796 # ifndef OPENSSL_NO_SRP
797 SRP_CTX srp_ctx; /* ctx for SRP authentication */
800 # ifndef OPENSSL_NO_NEXTPROTONEG
801 /* Next protocol negotiation information */
804 * For a server, this contains a callback function by which the set of
805 * advertised protocols can be provided.
807 int (*next_protos_advertised_cb) (SSL *s, const unsigned char **buf,
808 unsigned int *len, void *arg);
809 void *next_protos_advertised_cb_arg;
811 * For a client, this contains a callback function that selects the next
812 * protocol from the list provided by the server.
814 int (*next_proto_select_cb) (SSL *s, unsigned char **out,
815 unsigned char *outlen,
816 const unsigned char *in,
817 unsigned int inlen, void *arg);
818 void *next_proto_select_cb_arg;
822 * ALPN information (we are in the process of transitioning from NPN to
827 * For a server, this contains a callback function that allows the
828 * server to select the protocol for the connection.
829 * out: on successful return, this must point to the raw protocol
830 * name (without the length prefix).
831 * outlen: on successful return, this contains the length of |*out|.
832 * in: points to the client's list of supported protocols in
834 * inlen: the length of |in|.
836 int (*alpn_select_cb) (SSL *s,
837 const unsigned char **out,
838 unsigned char *outlen,
839 const unsigned char *in,
840 unsigned int inlen, void *arg);
841 void *alpn_select_cb_arg;
844 * For a client, this contains the list of supported protocols in wire
847 unsigned char *alpn_client_proto_list;
848 unsigned alpn_client_proto_list_len;
850 /* Shared DANE context */
851 struct dane_ctx_st dane;
853 /* SRTP profiles we are willing to do from RFC 5764 */
854 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
856 * Callback for disabling session caching and ticket support on a session
857 * basis, depending on the chosen cipher.
859 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
860 # ifndef OPENSSL_NO_EC
861 /* EC extension values inherited by SSL structure */
862 size_t tlsext_ecpointformatlist_length;
863 unsigned char *tlsext_ecpointformatlist;
864 size_t tlsext_ellipticcurvelist_length;
865 unsigned char *tlsext_ellipticcurvelist;
866 # endif /* OPENSSL_NO_EC */
868 /* ext status type used for CSR extension (OCSP Stapling) */
869 int tlsext_status_type;
877 * protocol version (one of SSL2_VERSION, SSL3_VERSION, TLS1_VERSION,
883 const SSL_METHOD *method;
885 * There are 2 BIO's even though they are normally both the same. This
886 * is so data can be read and written to different handlers
888 /* used by SSL_read */
890 /* used by SSL_write */
892 /* used during session-id reuse to concatenate messages */
895 * This holds a variable that indicates what we were doing when a 0 or -1
896 * is returned. This is needed for non-blocking IO so we know what
897 * request needs re-doing when in SSL_accept or SSL_connect
901 int (*handshake_func) (SSL *);
903 * Imagine that here's a boolean member "init" that is switched as soon
904 * as SSL_set_{accept/connect}_state is called for the first time, so
905 * that "state" and "handshake_func" are properly initialized. But as
906 * handshake_func is == 0 until then, we use this test instead of an
909 /* are we the server side? */
912 * Generate a new session or reuse an old one.
913 * NB: For servers, the 'new' session may actually be a previously
914 * cached session or even the previous session unless
915 * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set
918 /* don't send shutdown packets */
920 /* we have shut things down, 0x01 sent, 0x02 for received */
925 BUF_MEM *init_buf; /* buffer used during init */
926 void *init_msg; /* pointer to handshake message body, set by
927 * ssl3_get_message() */
928 int init_num; /* amount read/written */
929 int init_off; /* amount read/written */
931 struct ssl3_state_st *s3; /* SSLv3 variables */
932 struct dtls1_state_st *d1; /* DTLSv1 variables */
934 /* callback that allows applications to peek at protocol messages */
935 void (*msg_callback) (int write_p, int version, int content_type,
936 const void *buf, size_t len, SSL *ssl, void *arg);
937 void *msg_callback_arg;
938 int hit; /* reusing a previous session */
939 X509_VERIFY_PARAM *param;
941 /* Per connection DANE state */
945 STACK_OF(SSL_CIPHER) *cipher_list;
946 STACK_OF(SSL_CIPHER) *cipher_list_by_id;
948 * These are the ones being used, the ones in SSL_SESSION are the ones to
949 * be 'copied' into these ones
952 EVP_CIPHER_CTX *enc_read_ctx; /* cryptographic state */
953 EVP_MD_CTX *read_hash; /* used for mac generation */
954 COMP_CTX *compress; /* compression */
955 COMP_CTX *expand; /* uncompress */
956 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
957 EVP_MD_CTX *write_hash; /* used for mac generation */
960 /* This is used to hold the server certificate used */
961 struct cert_st /* CERT */ *cert;
963 * the session_id_context is used to ensure sessions are only reused in
964 * the appropriate context
966 unsigned int sid_ctx_length;
967 unsigned char sid_ctx[SSL_MAX_SID_CTX_LENGTH];
968 /* This can also be in the session once a session is established */
969 SSL_SESSION *session;
970 /* Default generate session ID callback. */
971 GEN_SESSION_CB generate_session_id;
974 * 0 don't care about verify failure.
975 * 1 fail if verify fails
977 uint32_t verify_mode;
978 /* fail if callback returns 0 */
979 int (*verify_callback) (int ok, X509_STORE_CTX *ctx);
980 /* optional informational callback */
981 void (*info_callback) (const SSL *ssl, int type, int val);
982 /* error bytes to be written */
986 # ifndef OPENSSL_NO_PSK
987 unsigned int (*psk_client_callback) (SSL *ssl, const char *hint,
989 unsigned int max_identity_len,
991 unsigned int max_psk_len);
992 unsigned int (*psk_server_callback) (SSL *ssl, const char *identity,
994 unsigned int max_psk_len);
997 /* Verified chain of peer */
998 STACK_OF(X509) *verified_chain;
1000 /* extra application data */
1001 CRYPTO_EX_DATA ex_data;
1002 /* for server side, keep the list of CA_dn we can use */
1003 STACK_OF(X509_NAME) *client_CA;
1005 /* protocol behaviour */
1009 int min_proto_version;
1010 int max_proto_version;
1013 /* what was passed, used for SSLv3/TLS rollback check */
1017 * If we're using more than one pipeline how should we divide the data
1018 * up between the pipes?
1020 unsigned int split_send_fragment;
1022 * Maximum amount of data to send in one fragment. actual record size can
1023 * be more than this due to padding and MAC overheads.
1025 unsigned int max_send_fragment;
1027 /* Up to how many pipelines should we use? If 0 then 1 is assumed */
1028 unsigned int max_pipelines;
1030 /* TLS extension debug callback */
1031 void (*tlsext_debug_cb) (SSL *s, int client_server, int type,
1032 const unsigned char *data, int len, void *arg);
1033 void *tlsext_debug_arg;
1034 char *tlsext_hostname;
1036 * no further mod of servername
1037 * 0 : call the servername extension callback.
1038 * 1 : prepare 2, allow last ack just after in server callback.
1039 * 2 : don't call servername callback, no ack in server hello
1041 int servername_done;
1042 /* certificate status request info */
1043 /* Status type or -1 if no status type */
1044 int tlsext_status_type;
1045 # ifndef OPENSSL_NO_CT
1047 * Validates that the SCTs (Signed Certificate Timestamps) are sufficient.
1048 * If they are not, the connection should be aborted.
1050 ssl_ct_validation_cb ct_validation_callback;
1051 /* User-supplied argument tha tis passed to the ct_validation_callback */
1052 void *ct_validation_callback_arg;
1054 * Consolidated stack of SCTs from all sources.
1055 * Lazily populated by CT_get_peer_scts(SSL*)
1057 STACK_OF(SCT) *scts;
1058 /* Raw extension data, if seen */
1059 unsigned char *tlsext_scts;
1060 /* Length of raw extension data, if seen */
1061 uint16_t tlsext_scts_len;
1062 /* Have we attempted to find/parse SCTs yet? */
1065 /* Expect OCSP CertificateStatus message */
1066 int tlsext_status_expected;
1067 /* OCSP status request only */
1068 STACK_OF(OCSP_RESPID) *tlsext_ocsp_ids;
1069 X509_EXTENSIONS *tlsext_ocsp_exts;
1070 /* OCSP response received or to be sent */
1071 unsigned char *tlsext_ocsp_resp;
1072 int tlsext_ocsp_resplen;
1073 /* RFC4507 session ticket expected to be received or sent */
1074 int tlsext_ticket_expected;
1075 # ifndef OPENSSL_NO_EC
1076 size_t tlsext_ecpointformatlist_length;
1078 unsigned char *tlsext_ecpointformatlist;
1079 size_t tlsext_ellipticcurvelist_length;
1081 unsigned char *tlsext_ellipticcurvelist;
1082 # endif /* OPENSSL_NO_EC */
1083 /* TLS Session Ticket extension override */
1084 TLS_SESSION_TICKET_EXT *tlsext_session_ticket;
1085 /* TLS Session Ticket extension callback */
1086 tls_session_ticket_ext_cb_fn tls_session_ticket_ext_cb;
1087 void *tls_session_ticket_ext_cb_arg;
1088 /* TLS pre-shared secret session resumption */
1089 tls_session_secret_cb_fn tls_session_secret_cb;
1090 void *tls_session_secret_cb_arg;
1091 SSL_CTX *initial_ctx; /* initial ctx, used to store sessions */
1092 # ifndef OPENSSL_NO_NEXTPROTONEG
1094 * Next protocol negotiation. For the client, this is the protocol that
1095 * we sent in NextProtocol and is set when handling ServerHello
1096 * extensions. For a server, this is the client's selected_protocol from
1097 * NextProtocol and is set when handling the NextProtocol message, before
1098 * the Finished message.
1100 unsigned char *next_proto_negotiated;
1101 unsigned char next_proto_negotiated_len;
1103 # define session_ctx initial_ctx
1105 STACK_OF(SRTP_PROTECTION_PROFILE) *srtp_profiles;
1106 /* What's been chosen */
1107 SRTP_PROTECTION_PROFILE *srtp_profile;
1109 * Is use of the Heartbeat extension negotiated?
1112 * 2: enabled, but not allowed to send Requests
1114 unsigned int tlsext_heartbeat;
1115 /* Indicates if a HeartbeatRequest is in flight */
1116 unsigned int tlsext_hb_pending;
1117 /* HeartbeatRequest sequence number */
1118 unsigned int tlsext_hb_seq;
1120 * For a client, this contains the list of supported protocols in wire
1123 unsigned char *alpn_client_proto_list;
1124 unsigned alpn_client_proto_list_len;
1127 * 1 if we are renegotiating.
1128 * 2 if we are a server and are inside a handshake
1129 * (i.e. not just sending a HelloRequest)
1132 # ifndef OPENSSL_NO_SRP
1133 /* ctx for SRP authentication */
1137 * Callback for disabling session caching and ticket support on a session
1138 * basis, depending on the chosen cipher.
1140 int (*not_resumable_session_cb) (SSL *ssl, int is_forward_secure);
1142 RECORD_LAYER rlayer;
1144 /* Default password callback. */
1145 pem_password_cb *default_passwd_callback;
1147 /* Default password callback user data. */
1148 void *default_passwd_callback_userdata;
1150 /* Async Job info */
1152 ASYNC_WAIT_CTX *waitctx;
1154 CRYPTO_RWLOCK *lock;
1158 typedef struct ssl3_state_st {
1160 int read_mac_secret_size;
1161 unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
1162 int write_mac_secret_size;
1163 unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
1164 unsigned char server_random[SSL3_RANDOM_SIZE];
1165 unsigned char client_random[SSL3_RANDOM_SIZE];
1166 /* flags for countermeasure against known-IV weakness */
1167 int need_empty_fragments;
1168 int empty_fragment_done;
1169 /* used during startup, digest all incoming/outgoing packets */
1170 BIO *handshake_buffer;
1172 * When handshake digest is determined, buffer is hashed and
1173 * freed and MD_CTX for the required digest is stored here.
1175 EVP_MD_CTX *handshake_dgst;
1177 * Set whenever an expected ChangeCipherSpec message is processed.
1178 * Unset when the peer's Finished message is received.
1179 * Unexpected ChangeCipherSpec messages trigger a fatal alert.
1181 int change_cipher_spec;
1185 * we allow one fatal and one warning alert to be outstanding, send close
1186 * alert via the warning alert
1189 unsigned char send_alert[2];
1191 * This flag is set when we should renegotiate ASAP, basically when there
1192 * is no more data in the read or write buffers
1195 int total_renegotiations;
1196 int num_renegotiations;
1197 int in_read_app_data;
1199 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
1200 unsigned char finish_md[EVP_MAX_MD_SIZE * 2];
1202 unsigned char peer_finish_md[EVP_MAX_MD_SIZE * 2];
1203 int peer_finish_md_len;
1204 unsigned long message_size;
1206 /* used to hold the new cipher we are going to use */
1207 const SSL_CIPHER *new_cipher;
1208 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1209 EVP_PKEY *pkey; /* holds short lived DH/ECDH key */
1211 /* used for certificate requests */
1214 char ctype[SSL3_CT_NUMBER];
1215 STACK_OF(X509_NAME) *ca_names;
1216 int key_block_length;
1217 unsigned char *key_block;
1218 const EVP_CIPHER *new_sym_enc;
1219 const EVP_MD *new_hash;
1220 int new_mac_pkey_type;
1221 int new_mac_secret_size;
1222 # ifndef OPENSSL_NO_COMP
1223 const SSL_COMP *new_compression;
1225 char *new_compression;
1228 /* Raw values of the cipher list from a client */
1229 unsigned char *ciphers_raw;
1230 size_t ciphers_rawlen;
1231 /* Temporary storage for premaster secret */
1234 #ifndef OPENSSL_NO_PSK
1235 /* Temporary storage for PSK key */
1240 * signature algorithms peer reports: e.g. supported signature
1241 * algorithms extension for server or as part of a certificate
1242 * request for client.
1244 unsigned char *peer_sigalgs;
1245 /* Size of above array */
1246 size_t peer_sigalgslen;
1247 /* Digest peer uses for signing */
1248 const EVP_MD *peer_md;
1249 /* Array of digests used for signing */
1250 const EVP_MD *md[SSL_PKEY_NUM];
1252 * Set if corresponding CERT_PKEY can be used with current
1253 * SSL session: e.g. appropriate curve, signature algorithms etc.
1254 * If zero it can't be used at all.
1256 uint32_t valid_flags[SSL_PKEY_NUM];
1258 * For servers the following masks are for the key and auth algorithms
1259 * that are supported by the certs below. For clients they are masks of
1260 * *disabled* algorithms based on the current session.
1265 * The following are used by the client to see if a cipher is allowed or
1266 * not. It contains the minimum and maximum version the client's using
1267 * based on what it knows so far.
1273 /* Connection binding to prevent renegotiation attacks */
1274 unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
1275 unsigned char previous_client_finished_len;
1276 unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
1277 unsigned char previous_server_finished_len;
1278 int send_connection_binding; /* TODOEKR */
1280 # ifndef OPENSSL_NO_NEXTPROTONEG
1282 * Set if we saw the Next Protocol Negotiation extension from our peer.
1284 int next_proto_neg_seen;
1288 * ALPN information (we are in the process of transitioning from NPN to
1293 * In a server these point to the selected ALPN protocol after the
1294 * ClientHello has been processed. In a client these contain the protocol
1295 * that the server selected once the ServerHello has been processed.
1297 unsigned char *alpn_selected;
1298 size_t alpn_selected_len;
1299 /* used by the server to know what options were proposed */
1300 unsigned char *alpn_proposed;
1301 size_t alpn_proposed_len;
1302 /* used by the client to know if it actually sent alpn */
1305 # ifndef OPENSSL_NO_EC
1307 * This is set to true if we believe that this is a version of Safari
1308 * running on OS X 10.6 or newer. We wish to know this because Safari on
1309 * 10.8 .. 10.8.3 has broken ECDHE-ECDSA support.
1311 char is_probably_safari;
1312 # endif /* !OPENSSL_NO_EC */
1314 /* For clients: peer temporary key */
1315 # if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH)
1322 /* DTLS structures */
1324 # ifndef OPENSSL_NO_SCTP
1325 # define DTLS1_SCTP_AUTH_LABEL "EXPORTER_DTLS_OVER_SCTP"
1328 /* Max MTU overhead we know about so far is 40 for IPv6 + 8 for UDP */
1329 # define DTLS1_MAX_MTU_OVERHEAD 48
1332 * Flag used in message reuse to indicate the buffer contains the record
1333 * header as well as the the handshake message header.
1335 # define DTLS1_SKIP_RECORD_HEADER 2
1337 struct dtls1_retransmit_state {
1338 EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
1339 EVP_MD_CTX *write_hash; /* used for mac generation */
1340 COMP_CTX *compress; /* compression */
1341 SSL_SESSION *session;
1342 unsigned short epoch;
1345 struct hm_header_st {
1347 unsigned long msg_len;
1349 unsigned long frag_off;
1350 unsigned long frag_len;
1351 unsigned int is_ccs;
1352 struct dtls1_retransmit_state saved_retransmit_state;
1355 struct dtls1_timeout_st {
1356 /* Number of read timeouts so far */
1357 unsigned int read_timeouts;
1358 /* Number of write timeouts so far */
1359 unsigned int write_timeouts;
1360 /* Number of alerts received so far */
1361 unsigned int num_alerts;
1364 typedef struct hm_fragment_st {
1365 struct hm_header_st msg_header;
1366 unsigned char *fragment;
1367 unsigned char *reassembly;
1370 typedef struct pqueue_st pqueue;
1371 typedef struct pitem_st pitem;
1374 unsigned char priority[8]; /* 64-bit value in big-endian encoding */
1379 typedef struct pitem_st *piterator;
1381 pitem *pitem_new(unsigned char *prio64be, void *data);
1382 void pitem_free(pitem *item);
1383 pqueue* pqueue_new(void);
1384 void pqueue_free(pqueue *pq);
1385 pitem *pqueue_insert(pqueue *pq, pitem *item);
1386 pitem *pqueue_peek(pqueue *pq);
1387 pitem *pqueue_pop(pqueue *pq);
1388 pitem *pqueue_find(pqueue *pq, unsigned char *prio64be);
1389 pitem *pqueue_iterator(pqueue *pq);
1390 pitem *pqueue_next(piterator *iter);
1391 int pqueue_size(pqueue *pq);
1393 typedef struct dtls1_state_st {
1394 unsigned char cookie[DTLS1_COOKIE_LENGTH];
1395 unsigned int cookie_len;
1396 unsigned int cookie_verified;
1398 /* handshake message numbers */
1399 unsigned short handshake_write_seq;
1400 unsigned short next_handshake_write_seq;
1401 unsigned short handshake_read_seq;
1403 /* Buffered handshake messages */
1404 pqueue *buffered_messages;
1405 /* Buffered (sent) handshake records */
1406 pqueue *sent_messages;
1408 unsigned int link_mtu; /* max on-the-wire DTLS packet size */
1409 unsigned int mtu; /* max DTLS packet size */
1410 struct hm_header_st w_msg_hdr;
1411 struct hm_header_st r_msg_hdr;
1412 struct dtls1_timeout_st timeout;
1414 * Indicates when the last handshake msg or heartbeat sent will timeout
1416 struct timeval next_timeout;
1417 /* Timeout duration */
1418 unsigned short timeout_duration;
1420 unsigned int retransmitting;
1421 # ifndef OPENSSL_NO_SCTP
1422 int shutdown_received;
1428 # ifndef OPENSSL_NO_EC
1430 * From ECC-TLS draft, used in encoding the curve type in ECParameters
1432 # define EXPLICIT_PRIME_CURVE_TYPE 1
1433 # define EXPLICIT_CHAR2_CURVE_TYPE 2
1434 # define NAMED_CURVE_TYPE 3
1435 # endif /* OPENSSL_NO_EC */
1437 typedef struct cert_pkey_st {
1439 EVP_PKEY *privatekey;
1440 /* Chain for this certificate */
1441 STACK_OF(X509) *chain;
1444 * serverinfo data for this certificate. The data is in TLS Extension
1445 * wire format, specifically it's a series of records like:
1446 * uint16_t extension_type; // (RFC 5246, 7.4.1.4, Extension)
1448 * uint8_t data[length];
1450 unsigned char *serverinfo;
1451 size_t serverinfo_length;
1453 /* Retrieve Suite B flags */
1454 # define tls1_suiteb(s) (s->cert->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS)
1455 /* Uses to check strict mode: suite B modes are always strict */
1456 # define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
1457 (SSL_CERT_FLAG_SUITEB_128_LOS|SSL_CERT_FLAG_TLS_STRICT)
1460 unsigned short ext_type;
1462 * Per-connection flags relating to this extension type: not used if
1463 * part of an SSL_CTX structure.
1466 custom_ext_add_cb add_cb;
1467 custom_ext_free_cb free_cb;
1469 custom_ext_parse_cb parse_cb;
1471 } custom_ext_method;
1473 /* ext_flags values */
1476 * Indicates an extension has been received. Used to check for unsolicited or
1477 * duplicate extensions.
1479 # define SSL_EXT_FLAG_RECEIVED 0x1
1481 * Indicates an extension has been sent: used to enable sending of
1482 * corresponding ServerHello extension.
1484 # define SSL_EXT_FLAG_SENT 0x2
1487 custom_ext_method *meths;
1489 } custom_ext_methods;
1491 typedef struct cert_st {
1492 /* Current active set */
1494 * ALWAYS points to an element of the pkeys array
1495 * Probably it would make more sense to store
1496 * an index, not a pointer.
1499 # ifndef OPENSSL_NO_DH
1501 DH *(*dh_tmp_cb) (SSL *ssl, int is_export, int keysize);
1504 /* Flags related to certificates */
1505 uint32_t cert_flags;
1506 CERT_PKEY pkeys[SSL_PKEY_NUM];
1508 * Certificate types (received or sent) in certificate request message.
1509 * On receive this is only set if number of certificate types exceeds
1512 unsigned char *ctypes;
1515 * supported signature algorithms. When set on a client this is sent in
1516 * the client hello as the supported signature algorithms extension. For
1517 * servers it represents the signature algorithms we are willing to use.
1519 unsigned char *conf_sigalgs;
1520 /* Size of above array */
1521 size_t conf_sigalgslen;
1523 * Client authentication signature algorithms, if not set then uses
1524 * conf_sigalgs. On servers these will be the signature algorithms sent
1525 * to the client in a cerificate request for TLS 1.2. On a client this
1526 * represents the signature algortithms we are willing to use for client
1529 unsigned char *client_sigalgs;
1530 /* Size of above array */
1531 size_t client_sigalgslen;
1533 * Signature algorithms shared by client and server: cached because these
1534 * are used most often.
1536 TLS_SIGALGS *shared_sigalgs;
1537 size_t shared_sigalgslen;
1539 * Certificate setup callback: if set is called whenever a certificate
1540 * may be required (client or server). the callback can then examine any
1541 * appropriate parameters and setup any certificates required. This
1542 * allows advanced applications to select certificates on the fly: for
1543 * example based on supported signature algorithms or curves.
1545 int (*cert_cb) (SSL *ssl, void *arg);
1548 * Optional X509_STORE for chain building or certificate validation If
1549 * NULL the parent SSL_CTX store is used instead.
1551 X509_STORE *chain_store;
1552 X509_STORE *verify_store;
1553 /* Custom extension methods for server and client */
1554 custom_ext_methods cli_ext;
1555 custom_ext_methods srv_ext;
1556 /* Security callback */
1557 int (*sec_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1558 void *other, void *ex);
1559 /* Security level */
1562 #ifndef OPENSSL_NO_PSK
1563 /* If not NULL psk identity hint to use for servers */
1564 char *psk_identity_hint;
1566 int references; /* >1 only if SSL_copy_session_id is used */
1567 CRYPTO_RWLOCK *lock;
1570 /* Structure containing decoded values of signature algorithms extension */
1571 struct tls_sigalgs_st {
1572 /* NID of hash algorithm */
1574 /* NID of signature algorithm */
1576 /* Combined hash and signature NID */
1577 int signandhash_nid;
1578 /* Raw values used in extension */
1579 unsigned char rsign;
1580 unsigned char rhash;
1583 # define FP_ICC (int (*)(const void *,const void *))
1586 * This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff It is a bit
1587 * of a mess of functions, but hell, think of it as an opaque structure :-)
1589 typedef struct ssl3_enc_method {
1590 int (*enc) (SSL *, SSL3_RECORD *, unsigned int, int);
1591 int (*mac) (SSL *, SSL3_RECORD *, unsigned char *, int);
1592 int (*setup_key_block) (SSL *);
1593 int (*generate_master_secret) (SSL *, unsigned char *, unsigned char *,
1595 int (*change_cipher_state) (SSL *, int);
1596 int (*final_finish_mac) (SSL *, const char *, int, unsigned char *);
1597 int finish_mac_length;
1598 const char *client_finished_label;
1599 int client_finished_label_len;
1600 const char *server_finished_label;
1601 int server_finished_label_len;
1602 int (*alert_value) (int);
1603 int (*export_keying_material) (SSL *, unsigned char *, size_t,
1604 const char *, size_t,
1605 const unsigned char *, size_t,
1607 /* Various flags indicating protocol version requirements */
1609 /* Handshake header length */
1611 /* Set the handshake header */
1612 int (*set_handshake_header) (SSL *s, int type, unsigned long len);
1613 /* Write out handshake message */
1614 int (*do_write) (SSL *s);
1617 # define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
1618 # define ssl_handshake_start(s) \
1619 (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
1620 # define ssl_set_handshake_header(s, htype, len) \
1621 s->method->ssl3_enc->set_handshake_header(s, htype, len)
1622 # define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
1624 /* Values for enc_flags */
1626 /* Uses explicit IV for CBC mode */
1627 # define SSL_ENC_FLAG_EXPLICIT_IV 0x1
1628 /* Uses signature algorithms extension */
1629 # define SSL_ENC_FLAG_SIGALGS 0x2
1630 /* Uses SHA256 default PRF */
1631 # define SSL_ENC_FLAG_SHA256_PRF 0x4
1633 # define SSL_ENC_FLAG_DTLS 0x8
1635 * Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2: may
1636 * apply to others in future.
1638 # define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
1640 # ifndef OPENSSL_NO_COMP
1641 /* Used for holding the relevant compression methods loaded into SSL_CTX */
1642 typedef struct ssl3_comp_st {
1643 int comp_id; /* The identifier byte for this compression
1645 char *name; /* Text name used for the compression type */
1646 COMP_METHOD *method; /* The method :-) */
1650 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
1652 __owur const SSL_METHOD *ssl_bad_method(int ver);
1653 __owur const SSL_METHOD *sslv3_method(void);
1654 __owur const SSL_METHOD *sslv3_server_method(void);
1655 __owur const SSL_METHOD *sslv3_client_method(void);
1656 __owur const SSL_METHOD *tlsv1_method(void);
1657 __owur const SSL_METHOD *tlsv1_server_method(void);
1658 __owur const SSL_METHOD *tlsv1_client_method(void);
1659 __owur const SSL_METHOD *tlsv1_1_method(void);
1660 __owur const SSL_METHOD *tlsv1_1_server_method(void);
1661 __owur const SSL_METHOD *tlsv1_1_client_method(void);
1662 __owur const SSL_METHOD *tlsv1_2_method(void);
1663 __owur const SSL_METHOD *tlsv1_2_server_method(void);
1664 __owur const SSL_METHOD *tlsv1_2_client_method(void);
1665 __owur const SSL_METHOD *dtlsv1_method(void);
1666 __owur const SSL_METHOD *dtlsv1_server_method(void);
1667 __owur const SSL_METHOD *dtlsv1_client_method(void);
1668 __owur const SSL_METHOD *dtls_bad_ver_client_method(void);
1669 __owur const SSL_METHOD *dtlsv1_2_method(void);
1670 __owur const SSL_METHOD *dtlsv1_2_server_method(void);
1671 __owur const SSL_METHOD *dtlsv1_2_client_method(void);
1673 extern const SSL3_ENC_METHOD TLSv1_enc_data;
1674 extern const SSL3_ENC_METHOD TLSv1_1_enc_data;
1675 extern const SSL3_ENC_METHOD TLSv1_2_enc_data;
1676 extern const SSL3_ENC_METHOD SSLv3_enc_data;
1677 extern const SSL3_ENC_METHOD DTLSv1_enc_data;
1678 extern const SSL3_ENC_METHOD DTLSv1_2_enc_data;
1681 * Flags for SSL methods
1683 #define SSL_METHOD_NO_FIPS (1U<<0)
1684 #define SSL_METHOD_NO_SUITEB (1U<<1)
1686 # define IMPLEMENT_tls_meth_func(version, flags, mask, func_name, s_accept, \
1687 s_connect, enc_data) \
1688 const SSL_METHOD *func_name(void) \
1690 static const SSL_METHOD func_name##_data= { \
1704 ssl3_renegotiate_check, \
1707 ssl3_dispatch_alert, \
1710 ssl3_get_cipher_by_char, \
1711 ssl3_put_cipher_by_char, \
1715 tls1_default_timeout, \
1717 ssl_undefined_void_function, \
1718 ssl3_callback_ctrl, \
1719 ssl3_ctx_callback_ctrl, \
1721 return &func_name##_data; \
1724 # define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect) \
1725 const SSL_METHOD *func_name(void) \
1727 static const SSL_METHOD func_name##_data= { \
1729 SSL_METHOD_NO_FIPS | SSL_METHOD_NO_SUITEB, \
1741 ssl3_renegotiate_check, \
1744 ssl3_dispatch_alert, \
1747 ssl3_get_cipher_by_char, \
1748 ssl3_put_cipher_by_char, \
1752 ssl3_default_timeout, \
1754 ssl_undefined_void_function, \
1755 ssl3_callback_ctrl, \
1756 ssl3_ctx_callback_ctrl, \
1758 return &func_name##_data; \
1761 # define IMPLEMENT_dtls1_meth_func(version, flags, mask, func_name, s_accept, \
1762 s_connect, enc_data) \
1763 const SSL_METHOD *func_name(void) \
1765 static const SSL_METHOD func_name##_data= { \
1779 ssl3_renegotiate_check, \
1781 dtls1_write_app_data_bytes, \
1782 dtls1_dispatch_alert, \
1785 ssl3_get_cipher_by_char, \
1786 ssl3_put_cipher_by_char, \
1790 dtls1_default_timeout, \
1792 ssl_undefined_void_function, \
1793 ssl3_callback_ctrl, \
1794 ssl3_ctx_callback_ctrl, \
1796 return &func_name##_data; \
1799 struct openssl_ssl_test_functions {
1800 int (*p_ssl_init_wbio_buffer) (SSL *s);
1801 int (*p_ssl3_setup_buffers) (SSL *s);
1802 # ifndef OPENSSL_NO_HEARTBEATS
1803 int (*p_dtls1_process_heartbeat) (SSL *s,
1804 unsigned char *p, unsigned int length);
1808 const char *ssl_protocol_to_string(int version);
1810 # ifndef OPENSSL_UNIT_TEST
1812 void ssl_clear_cipher_ctx(SSL *s);
1813 int ssl_clear_bad_session(SSL *s);
1814 __owur CERT *ssl_cert_new(void);
1815 __owur CERT *ssl_cert_dup(CERT *cert);
1816 void ssl_cert_clear_certs(CERT *c);
1817 void ssl_cert_free(CERT *c);
1818 __owur int ssl_get_new_session(SSL *s, int session);
1819 __owur int ssl_get_prev_session(SSL *s, const PACKET *ext,
1820 const PACKET *session_id);
1821 __owur SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket);
1822 __owur int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
1823 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
1824 __owur int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1825 const SSL_CIPHER *const *bp);
1826 __owur STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
1827 STACK_OF(SSL_CIPHER) **pref,
1828 STACK_OF(SSL_CIPHER) **sorted,
1829 const char *rule_str, CERT *c);
1830 void ssl_update_cache(SSL *s, int mode);
1831 __owur int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
1832 const EVP_MD **md, int *mac_pkey_type,
1833 int *mac_secret_size, SSL_COMP **comp, int use_etm);
1834 __owur int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
1835 __owur const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr);
1836 __owur int ssl_cert_set0_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
1837 __owur int ssl_cert_set1_chain(SSL *s, SSL_CTX *ctx, STACK_OF(X509) *chain);
1838 __owur int ssl_cert_add0_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
1839 __owur int ssl_cert_add1_chain_cert(SSL *s, SSL_CTX *ctx, X509 *x);
1840 __owur int ssl_cert_select_current(CERT *c, X509 *x);
1841 __owur int ssl_cert_set_current(CERT *c, long arg);
1842 __owur X509 *ssl_cert_get0_next_certificate(CERT *c, int first);
1843 void ssl_cert_set_cert_cb(CERT *c, int (*cb) (SSL *ssl, void *arg),
1846 __owur int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
1847 __owur int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
1848 __owur int ssl_build_cert_chain(SSL *s, SSL_CTX *ctx, int flags);
1849 __owur int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
1851 __owur int ssl_security(const SSL *s, int op, int bits, int nid, void *other);
1852 __owur int ssl_ctx_security(const SSL_CTX *ctx, int op, int bits, int nid, void *other);
1854 int ssl_undefined_function(SSL *s);
1855 __owur int ssl_undefined_void_function(void);
1856 __owur int ssl_undefined_const_function(const SSL *s);
1857 __owur CERT_PKEY *ssl_get_server_send_pkey(SSL *s);
1858 __owur int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
1859 size_t *serverinfo_length);
1860 __owur EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
1861 __owur int ssl_cert_type(X509 *x, const EVP_PKEY *pkey);
1862 void ssl_set_masks(SSL *s);
1863 __owur STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
1864 __owur int ssl_verify_alarm_type(long type);
1865 void ssl_sort_cipher_list(void);
1866 void ssl_load_ciphers(void);
1867 __owur int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
1868 __owur int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,
1870 __owur EVP_PKEY *ssl_generate_pkey(EVP_PKEY *pm);
1871 __owur int ssl_derive(SSL *s, EVP_PKEY *privkey, EVP_PKEY *pubkey);
1872 __owur EVP_PKEY *ssl_dh_to_pkey(DH *dh);
1874 __owur const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
1875 __owur int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
1876 int ssl3_init_finished_mac(SSL *s);
1877 __owur int ssl3_setup_key_block(SSL *s);
1878 __owur int ssl3_change_cipher_state(SSL *s, int which);
1879 void ssl3_cleanup_key_block(SSL *s);
1880 __owur int ssl3_do_write(SSL *s, int type);
1881 int ssl3_send_alert(SSL *s, int level, int desc);
1882 __owur int ssl3_generate_master_secret(SSL *s, unsigned char *out,
1883 unsigned char *p, int len);
1884 __owur int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
1885 __owur int ssl3_num_ciphers(void);
1886 __owur const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
1887 int ssl3_renegotiate(SSL *ssl);
1888 int ssl3_renegotiate_check(SSL *ssl);
1889 __owur int ssl3_dispatch_alert(SSL *s);
1890 __owur int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
1892 __owur int ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
1893 void ssl3_free_digest_list(SSL *s);
1894 __owur unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
1895 __owur const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,
1896 STACK_OF(SSL_CIPHER) *clnt,
1897 STACK_OF(SSL_CIPHER) *srvr);
1898 __owur int ssl3_digest_cached_records(SSL *s, int keep);
1899 __owur int ssl3_new(SSL *s);
1900 void ssl3_free(SSL *s);
1901 __owur int ssl3_read(SSL *s, void *buf, int len);
1902 __owur int ssl3_peek(SSL *s, void *buf, int len);
1903 __owur int ssl3_write(SSL *s, const void *buf, int len);
1904 __owur int ssl3_shutdown(SSL *s);
1905 void ssl3_clear(SSL *s);
1906 __owur long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
1907 __owur long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
1908 __owur long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1909 __owur long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp) (void));
1911 __owur int ssl3_do_change_cipher_spec(SSL *ssl);
1912 __owur long ssl3_default_timeout(void);
1914 __owur int ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
1915 __owur int ssl3_handshake_write(SSL *s);
1917 __owur int ssl_allow_compression(SSL *s);
1919 __owur int ssl_version_supported(const SSL *s, int version);
1921 __owur int ssl_set_client_hello_version(SSL *s);
1922 __owur int ssl_check_version_downgrade(SSL *s);
1923 __owur int ssl_set_version_bound(int method_version, int version, int *bound);
1924 __owur int ssl_choose_server_version(SSL *s);
1925 __owur int ssl_choose_client_version(SSL *s, int version);
1926 int ssl_get_client_min_max_version(const SSL *s, int *min_version, int *max_version);
1928 __owur long tls1_default_timeout(void);
1929 __owur int dtls1_do_write(SSL *s, int type);
1930 void dtls1_set_message_header(SSL *s,
1933 unsigned long frag_off,
1934 unsigned long frag_len);
1936 __owur int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
1938 __owur int dtls1_read_failed(SSL *s, int code);
1939 __owur int dtls1_buffer_message(SSL *s, int ccs);
1940 __owur int dtls1_retransmit_message(SSL *s, unsigned short seq, int *found);
1941 __owur int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
1942 int dtls1_retransmit_buffered_messages(SSL *s);
1943 void dtls1_clear_record_buffer(SSL *s);
1944 void dtls1_get_message_header(unsigned char *data,
1945 struct hm_header_st *msg_hdr);
1946 __owur long dtls1_default_timeout(void);
1947 __owur struct timeval *dtls1_get_timeout(SSL *s, struct timeval *timeleft);
1948 __owur int dtls1_check_timeout_num(SSL *s);
1949 __owur int dtls1_handle_timeout(SSL *s);
1950 void dtls1_start_timer(SSL *s);
1951 void dtls1_stop_timer(SSL *s);
1952 __owur int dtls1_is_timer_expired(SSL *s);
1953 void dtls1_double_timeout(SSL *s);
1954 __owur unsigned int dtls_raw_hello_verify_request(unsigned char *buf,
1955 unsigned char *cookie,
1956 unsigned char cookie_len);
1957 __owur int dtls1_send_newsession_ticket(SSL *s);
1958 __owur unsigned int dtls1_min_mtu(SSL *s);
1959 void dtls1_hm_fragment_free(hm_fragment *frag);
1960 __owur int dtls1_query_mtu(SSL *s);
1962 __owur int tls1_new(SSL *s);
1963 void tls1_free(SSL *s);
1964 void tls1_clear(SSL *s);
1965 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1966 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp) (void));
1968 __owur int dtls1_new(SSL *s);
1969 void dtls1_free(SSL *s);
1970 void dtls1_clear(SSL *s);
1971 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
1972 __owur int dtls1_shutdown(SSL *s);
1974 __owur int dtls1_dispatch_alert(SSL *s);
1976 __owur int ssl_init_wbio_buffer(SSL *s);
1977 void ssl_free_wbio_buffer(SSL *s);
1979 __owur int tls1_change_cipher_state(SSL *s, int which);
1980 __owur int tls1_setup_key_block(SSL *s);
1981 __owur int tls1_final_finish_mac(SSL *s,
1982 const char *str, int slen, unsigned char *p);
1983 __owur int tls1_generate_master_secret(SSL *s, unsigned char *out,
1984 unsigned char *p, int len);
1985 __owur int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1986 const char *label, size_t llen,
1987 const unsigned char *p, size_t plen,
1989 __owur int tls1_alert_code(int code);
1990 __owur int ssl3_alert_code(int code);
1991 __owur int ssl_ok(SSL *s);
1993 # ifndef OPENSSL_NO_EC
1994 __owur int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1997 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
1999 # ifndef OPENSSL_NO_EC
2000 /* Flags values from tls1_ec_curve_id2nid() */
2001 /* Mask for curve type */
2002 # define TLS_CURVE_TYPE 0x3
2003 # define TLS_CURVE_PRIME 0x0
2004 # define TLS_CURVE_CHAR2 0x1
2005 # define TLS_CURVE_CUSTOM 0x2
2006 __owur int tls1_ec_curve_id2nid(int curve_id, unsigned int *pflags);
2007 __owur int tls1_ec_nid2curve_id(int nid);
2008 __owur int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
2009 __owur int tls1_shared_curve(SSL *s, int nmatch);
2010 __owur int tls1_set_curves(unsigned char **pext, size_t *pextlen,
2011 int *curves, size_t ncurves);
2012 __owur int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
2014 __owur int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
2015 __owur EVP_PKEY *ssl_generate_pkey_curve(int id);
2016 # endif /* OPENSSL_NO_EC */
2018 __owur int tls1_shared_list(SSL *s,
2019 const unsigned char *l1, size_t l1len,
2020 const unsigned char *l2, size_t l2len, int nmatch);
2021 __owur unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf,
2022 unsigned char *limit, int *al);
2023 __owur unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf,
2024 unsigned char *limit, int *al);
2025 __owur int ssl_parse_clienthello_tlsext(SSL *s, PACKET *pkt);
2026 void ssl_set_default_md(SSL *s);
2027 __owur int tls1_set_server_sigalgs(SSL *s);
2028 __owur int ssl_check_clienthello_tlsext_late(SSL *s, int *al);
2029 __owur int ssl_parse_serverhello_tlsext(SSL *s, PACKET *pkt);
2030 __owur int ssl_prepare_clienthello_tlsext(SSL *s);
2031 __owur int ssl_prepare_serverhello_tlsext(SSL *s);
2033 # ifndef OPENSSL_NO_HEARTBEATS
2034 __owur int dtls1_heartbeat(SSL *s);
2035 __owur int dtls1_process_heartbeat(SSL *s, unsigned char *p, unsigned int length);
2038 __owur int tls_check_serverhello_tlsext_early(SSL *s, const PACKET *ext,
2039 const PACKET *session_id,
2042 __owur int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
2044 __owur int tls12_get_sigid(const EVP_PKEY *pk);
2045 __owur const EVP_MD *tls12_get_hash(unsigned char hash_alg);
2046 void ssl_set_sig_mask(uint32_t *pmask_a, SSL *s, int op);
2048 __owur int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
2049 __owur int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
2050 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
2052 void tls1_set_cert_validity(SSL *s);
2054 #ifndef OPENSSL_NO_CT
2055 __owur int ssl_validate_ct(SSL *s);
2058 # ifndef OPENSSL_NO_DH
2059 __owur DH *ssl_get_auto_dh(SSL *s);
2062 __owur int ssl_security_cert(SSL *s, SSL_CTX *ctx, X509 *x, int vfy, int is_ee);
2063 __owur int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *ex, int vfy);
2065 __owur EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
2066 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
2067 __owur int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2069 __owur int ssl_parse_serverhello_renegotiate_ext(SSL *s, PACKET *pkt,
2071 __owur int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
2073 __owur int ssl_parse_clienthello_renegotiate_ext(SSL *s, PACKET *pkt, int *al);
2074 __owur long ssl_get_algorithm2(SSL *s);
2075 __owur size_t tls12_copy_sigalgs(SSL *s, unsigned char *out,
2076 const unsigned char *psig, size_t psiglen);
2077 __owur int tls1_save_sigalgs(SSL *s, const unsigned char *data, int dsize);
2078 __owur int tls1_process_sigalgs(SSL *s);
2079 __owur size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
2080 __owur int tls12_check_peer_sigalg(const EVP_MD **pmd, SSL *s,
2081 const unsigned char *sig, EVP_PKEY *pkey);
2082 void ssl_set_client_disabled(SSL *s);
2083 __owur int ssl_cipher_disabled(SSL *s, const SSL_CIPHER *c, int op);
2085 __owur int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2087 __owur int ssl_parse_clienthello_use_srtp_ext(SSL *s, PACKET *pkt, int *al);
2088 __owur int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len,
2090 __owur int ssl_parse_serverhello_use_srtp_ext(SSL *s, PACKET *pkt, int *al);
2092 __owur int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen);
2093 __owur const EVP_MD *ssl_md(int idx);
2094 __owur const EVP_MD *ssl_handshake_md(SSL *s);
2095 __owur const EVP_MD *ssl_prf_md(SSL *s);
2098 __owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
2099 __owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
2100 unsigned char *md_out,
2101 size_t *md_out_size,
2102 const unsigned char header[13],
2103 const unsigned char *data,
2104 size_t data_plus_mac_size,
2105 size_t data_plus_mac_plus_padding_size,
2106 const unsigned char *mac_secret,
2107 unsigned mac_secret_length, char is_sslv3);
2109 __owur int tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
2110 EVP_MD_CTX *mac_ctx, const unsigned char *data,
2111 size_t data_len, size_t orig_len);
2113 __owur int srp_generate_server_master_secret(SSL *s);
2114 __owur int srp_generate_client_master_secret(SSL *s);
2115 __owur int srp_verify_server_param(SSL *s, int *al);
2119 void custom_ext_init(custom_ext_methods *meths);
2121 __owur int custom_ext_parse(SSL *s, int server,
2122 unsigned int ext_type,
2123 const unsigned char *ext_data, size_t ext_size, int *al);
2124 __owur int custom_ext_add(SSL *s, int server,
2125 unsigned char **pret, unsigned char *limit, int *al);
2127 __owur int custom_exts_copy(custom_ext_methods *dst, const custom_ext_methods *src);
2128 void custom_exts_free(custom_ext_methods *exts);
2130 void ssl_comp_free_compression_methods_int(void);
2134 # define ssl_init_wbio_buffer SSL_test_functions()->p_ssl_init_wbio_buffer
2135 # define ssl3_setup_buffers SSL_test_functions()->p_ssl3_setup_buffers
2136 # define dtls1_process_heartbeat SSL_test_functions()->p_dtls1_process_heartbeat