1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
57 /* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 * notice, this list of conditions and the following disclaimer in
69 * the documentation and/or other materials provided with the
72 * 3. All advertising materials mentioning features or use of this
73 * software must display the following acknowledgment:
74 * "This product includes software developed by the OpenSSL Project
75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78 * endorse or promote products derived from this software without
79 * prior written permission. For written permission, please contact
80 * openssl-core@openssl.org.
82 * 5. Products derived from this software may not be called "OpenSSL"
83 * nor may "OpenSSL" appear in their names without prior written
84 * permission of the OpenSSL Project.
86 * 6. Redistributions of any form whatsoever must retain the following
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102 * OF THE POSSIBILITY OF SUCH DAMAGE.
103 * ====================================================================
105 * This product includes cryptographic software written by Eric Young
106 * (eay@cryptsoft.com). This product includes software written by Tim
107 * Hudson (tjh@cryptsoft.com).
110 /* ====================================================================
111 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112 * ECC cipher suite support in OpenSSL originally developed by
113 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 /* ====================================================================
116 * Copyright 2005 Nokia. All rights reserved.
118 * The portions of the attached software ("Contribution") is developed by
119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
122 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
123 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
124 * support (see RFC 4279) to OpenSSL.
126 * No patent licenses or other rights except those expressly stated in
127 * the OpenSSL open source license shall be deemed granted or received
128 * expressly, by implication, estoppel, or otherwise.
130 * No assurances are provided by Nokia that the Contribution does not
131 * infringe the patent or other intellectual property rights of any third
132 * party or that the license provides you with all the necessary rights
133 * to make use of the Contribution.
135 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
136 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
137 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
138 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
142 #ifndef HEADER_SSL_LOCL_H
143 #define HEADER_SSL_LOCL_H
145 #include <openssl/base.h>
152 #include <openssl/aead.h>
153 #include <openssl/bio.h>
154 #include <openssl/buf.h>
155 #include <openssl/dsa.h>
156 #include <openssl/err.h>
157 #include <openssl/rsa.h>
158 #include <openssl/ssl.h>
159 #include <openssl/stack.h>
161 #define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
162 l|=(((unsigned long)(*((c)++)))<< 8), \
163 l|=(((unsigned long)(*((c)++)))<<16), \
164 l|=(((unsigned long)(*((c)++)))<<24))
166 /* NOTE - c is not incremented as per c2l */
167 #define c2ln(c,l1,l2,n) { \
171 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
172 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
173 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
174 case 5: l2|=((unsigned long)(*(--(c)))); \
175 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
176 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
177 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
178 case 1: l1|=((unsigned long)(*(--(c)))); \
182 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
183 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
184 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
185 *((c)++)=(unsigned char)(((l)>>24)&0xff))
187 #define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
188 l|=((unsigned long)(*((c)++)))<<16, \
189 l|=((unsigned long)(*((c)++)))<< 8, \
190 l|=((unsigned long)(*((c)++))))
192 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
193 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
194 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
195 *((c)++)=(unsigned char)(((l) )&0xff))
197 #define l2n6(l,c) (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
198 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
199 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
200 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
201 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
202 *((c)++)=(unsigned char)(((l) )&0xff))
204 #define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
205 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
206 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
207 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
208 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
209 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
210 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
211 *((c)++)=(unsigned char)(((l) )&0xff))
213 #define n2l6(c,l) (l =((BN_ULLONG)(*((c)++)))<<40, \
214 l|=((BN_ULLONG)(*((c)++)))<<32, \
215 l|=((BN_ULLONG)(*((c)++)))<<24, \
216 l|=((BN_ULLONG)(*((c)++)))<<16, \
217 l|=((BN_ULLONG)(*((c)++)))<< 8, \
218 l|=((BN_ULLONG)(*((c)++))))
220 /* NOTE - c is not incremented as per l2c */
221 #define l2cn(l1,l2,c,n) { \
224 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
225 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
226 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
227 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
228 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
229 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
230 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
231 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
235 #define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
236 (((unsigned int)(c[1])) )),c+=2)
237 #define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
238 c[1]=(unsigned char)(((s) )&0xff)),c+=2)
240 #define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
241 (((unsigned long)(c[1]))<< 8)| \
242 (((unsigned long)(c[2])) )),c+=3)
244 #define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
245 c[1]=(unsigned char)(((l)>> 8)&0xff), \
246 c[2]=(unsigned char)(((l) )&0xff)),c+=3)
250 #define SSL_DECRYPT 0
251 #define SSL_ENCRYPT 1
253 #define TWO_BYTE_BIT 0x80
254 #define SEC_ESC_BIT 0x40
255 #define TWO_BYTE_MASK 0x7fff
256 #define THREE_BYTE_MASK 0x3fff
258 #define INC32(a) ((a)=((a)+1)&0xffffffffL)
259 #define DEC32(a) ((a)=((a)-1)&0xffffffffL)
260 #define MAX_MAC_SIZE 20 /* up from 16 for SSLv3 */
263 * Define the Bitmasks for SSL_CIPHER.algorithms.
264 * This bits are used packed as dense as possible. If new methods/ciphers
265 * etc will be added, the bits a likely to change, so this information
266 * is for internal library use only, even though SSL_CIPHER.algorithms
267 * can be publicly accessed.
268 * Use the according functions for cipher management instead.
270 * The bit mask handling in the selection and sorting scheme in
271 * ssl_create_cipher_list() has only limited capabilities, reflecting
272 * that the different entities within are mutually exclusive:
273 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
276 /* Bits for algorithm_mkey (key exchange algorithm) */
277 #define SSL_kRSA 0x00000001L /* RSA key exchange */
278 #define SSL_kEDH 0x00000002L /* tmp DH key no DH cert */
279 #define SSL_kEECDH 0x00000004L /* ephemeral ECDH */
280 #define SSL_kPSK 0x00000008L /* PSK */
282 /* Bits for algorithm_auth (server authentication) */
283 #define SSL_aRSA 0x00000001L /* RSA auth */
284 #define SSL_aNULL 0x00000002L /* no auth (i.e. use ADH or AECDH) */
285 #define SSL_aECDSA 0x00000004L /* ECDSA auth*/
286 #define SSL_aPSK 0x00000008L /* PSK auth */
289 /* Bits for algorithm_enc (symmetric encryption) */
290 #define SSL_3DES 0x00000001L
291 #define SSL_RC4 0x00000002L
292 #define SSL_AES128 0x00000004L
293 #define SSL_AES256 0x00000008L
294 #define SSL_AES128GCM 0x00000010L
295 #define SSL_AES256GCM 0x00000020L
296 #define SSL_CHACHA20POLY1305 0x00000040L
298 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
301 /* Bits for algorithm_mac (symmetric authentication) */
303 #define SSL_MD5 0x00000001L
304 #define SSL_SHA1 0x00000002L
305 #define SSL_SHA256 0x00000004L
306 #define SSL_SHA384 0x00000008L
307 /* Not a real MAC, just an indication it is part of cipher */
308 #define SSL_AEAD 0x00000010L
310 /* Bits for algorithm_ssl (protocol version) */
311 #define SSL_SSLV3 0x00000002L
312 #define SSL_TLSV1 SSL_SSLV3 /* for now */
313 #define SSL_TLSV1_2 0x00000004L
316 /* Bits for algorithm2 (handshake digests and other extra flags) */
318 #define SSL_HANDSHAKE_MAC_MD5 0x10
319 #define SSL_HANDSHAKE_MAC_SHA 0x20
320 #define SSL_HANDSHAKE_MAC_SHA256 0x40
321 #define SSL_HANDSHAKE_MAC_SHA384 0x80
322 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
324 /* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX
325 * make sure to update this constant too */
326 #define SSL_MAX_DIGEST 4
328 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT)
330 #define TLS1_PRF_DGST_SHIFT 10
331 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
332 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
333 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
334 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
335 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
337 #define TLSEXT_CHANNEL_ID_SIZE 128
339 /* SSL_CIPHER_ALGORITHM2_AEAD is a flag in SSL_CIPHER.algorithm2 which
340 * indicates that the cipher is implemented via an EVP_AEAD. */
341 #define SSL_CIPHER_ALGORITHM2_AEAD (1<<23)
343 /* SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce
344 * for an SSL_CIPHER* with the SSL_CIPHER_ALGORITHM2_AEAD flag. */
345 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \
346 (((ssl_cipher->algorithm2 >> 24) & 0xf)*2)
348 /* SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD is a flag in
349 * SSL_CIPHER.algorithm2 which indicates that the variable part of the nonce is
350 * included as a prefix of the record. (AES-GCM, for example, does with with an
351 * 8-byte variable nonce.) */
352 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_INCLUDED_IN_RECORD (1<<22)
354 /* SSL_CIPHER_ALGORITHM2_STATEFUL_AEAD is a flag in SSL_CIPHER.algorithm2 which
355 * indicates that the AEAD is stateful and so doesn't take an nonce. This is
356 * only true of legacy cipher suites. */
357 #define SSL_CIPHER_ALGORITHM2_STATEFUL_AEAD (1<<28)
360 * Cipher strength information.
362 #define SSL_MEDIUM 0x00000001L
363 #define SSL_HIGH 0x00000002L
364 #define SSL_FIPS 0x00000004L
366 /* we have used 000001ff - 23 bits left to go */
368 /* Check if an SSL structure is using DTLS */
369 #define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
370 /* See if we need explicit IV */
371 #define SSL_USE_EXPLICIT_IV(s) \
372 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
373 /* See if we use signature algorithms extension
374 * and signature algorithm before signatures.
376 #define SSL_USE_SIGALGS(s) \
377 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
378 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2:
379 * may apply to others in future.
381 #define SSL_USE_TLS1_2_CIPHERS(s) \
382 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
383 /* Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
384 * flags because it may not be set to correct version yet.
386 #define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
387 ((SSL_IS_DTLS(s) && s->client_version <= DTLS1_2_VERSION) || \
388 (!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION))
390 /* Mostly for SSLv3 */
391 #define SSL_PKEY_RSA_ENC 0
392 #define SSL_PKEY_RSA_SIGN 1
393 #define SSL_PKEY_ECC 2
394 #define SSL_PKEY_NUM 3
396 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
397 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
398 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
399 * SSL_kEDH <- 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
410 #define PENDING_SESSION -10000
411 #define CERTIFICATE_SELECTION_PENDING -10001
413 /* From ECC-TLS draft, used in encoding the curve type in
416 #define EXPLICIT_PRIME_CURVE_TYPE 1
417 #define EXPLICIT_CHAR2_CURVE_TYPE 2
418 #define NAMED_CURVE_TYPE 3
420 /* Values for the |hash_message| parameter of |s->method->ssl_get_message|. */
421 #define SSL_GET_MESSAGE_DONT_HASH_MESSAGE 0
422 #define SSL_GET_MESSAGE_HASH_MESSAGE 1
424 typedef struct cert_pkey_st
427 EVP_PKEY *privatekey;
428 /* Digest to use when signing */
429 const EVP_MD *digest;
430 /* Chain for this certificate */
431 STACK_OF(X509) *chain;
432 /* Set if CERT_PKEY can be used with current SSL session: e.g.
433 * appropriate curve, signature algorithms etc. If zero it can't be
439 #define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
440 SSL_CERT_FLAG_TLS_STRICT
442 typedef struct cert_st
444 /* Current active set */
445 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
446 * Probably it would make more sense to store
447 * an index, not a pointer. */
449 /* For servers the following masks are for the key and auth
450 * algorithms that are supported by the certs below.
451 * For clients they are masks of *disabled* algorithms based
452 * on the current session.
455 unsigned long mask_k;
456 unsigned long mask_a;
458 unsigned long mask_ssl;
460 DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
462 /* Callback for generating ephemeral ECDH keys */
463 EC_KEY *(*ecdh_tmp_cb)(SSL *ssl,int is_export,int keysize);
464 /* Select ECDH parameters automatically */
466 /* Flags related to certificates */
467 unsigned int cert_flags;
468 CERT_PKEY pkeys[SSL_PKEY_NUM];
470 /* Server-only: client_certificate_types is list of certificate types to
471 * include in the CertificateRequest message.
473 unsigned char *client_certificate_types;
474 size_t num_client_certificate_types;
476 /* signature algorithms peer reports: e.g. supported signature
477 * algorithms extension for server or as part of a certificate
478 * request for client.
480 unsigned char *peer_sigalgs;
481 /* Size of above array */
482 size_t peer_sigalgslen;
483 /* suppported signature algorithms.
484 * When set on a client this is sent in the client hello as the
485 * supported signature algorithms extension. For servers
486 * it represents the signature algorithms we are willing to use.
488 unsigned char *conf_sigalgs;
489 /* Size of above array */
490 size_t conf_sigalgslen;
491 /* Client authentication signature algorithms, if not set then
492 * uses conf_sigalgs. On servers these will be the signature
493 * algorithms sent to the client in a cerificate request for TLS 1.2.
494 * On a client this represents the signature algortithms we are
495 * willing to use for client authentication.
497 unsigned char *client_sigalgs;
498 /* Size of above array */
499 size_t client_sigalgslen;
500 /* Signature algorithms shared by client and server: cached
501 * because these are used most often.
503 TLS_SIGALGS *shared_sigalgs;
504 size_t shared_sigalgslen;
506 /* Certificate setup callback: if set is called whenever a
507 * certificate may be required (client or server). the callback
508 * can then examine any appropriate parameters and setup any
509 * certificates required. This allows advanced applications
510 * to select certificates on the fly: for example based on
511 * supported signature algorithms or curves.
513 int (*cert_cb)(SSL *ssl, void *arg);
516 /* Optional X509_STORE for chain building or certificate validation
517 * If NULL the parent SSL_CTX store is used instead.
519 X509_STORE *chain_store;
520 X509_STORE *verify_store;
522 /* Raw values of the cipher list from a client */
523 unsigned char *ciphers_raw;
524 size_t ciphers_rawlen;
528 typedef struct sess_cert_st
530 STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
532 /* The 'peer_...' members are used only by clients. */
535 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
536 CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
537 /* Obviously we don't have the private keys of these,
538 * so maybe we shouldn't even use the CERT_PKEY type here. */
540 RSA *peer_rsa_tmp; /* not used for SSL 2 */
541 DH *peer_dh_tmp; /* not used for SSL 2 */
542 EC_KEY *peer_ecdh_tmp;
544 /* Structure containing decoded values of signature algorithms extension */
545 struct tls_sigalgs_st
547 /* NID of hash algorithm */
549 /* NID of signature algorithm */
551 /* Combined hash and signature NID */
553 /* Raw values used in extension */
558 /*#define MAC_DEBUG */
560 /*#define ERR_DEBUG */
561 /*#define ABORT_DEBUG */
562 /*#define PKT_DEBUG 1 */
563 /*#define DES_DEBUG */
564 /*#define DES_OFB_DEBUG */
565 /*#define SSL_DEBUG */
566 /*#define RSA_DEBUG */
567 /*#define IDEA_DEBUG */
569 #define FP_ICC (int (*)(const void *,const void *))
571 /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
572 * It is a bit of a mess of functions, but hell, think of it as
573 * an opaque structure :-) */
574 typedef struct ssl3_enc_method
576 int (*enc)(SSL *, int);
577 int (*mac)(SSL *, unsigned char *, int);
578 int (*setup_key_block)(SSL *);
579 int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
580 int (*change_cipher_state)(SSL *, int);
581 int (*final_finish_mac)(SSL *, const char *, int, unsigned char *);
582 int finish_mac_length;
583 int (*cert_verify_mac)(SSL *, int, unsigned char *);
584 const char *client_finished_label;
585 int client_finished_label_len;
586 const char *server_finished_label;
587 int server_finished_label_len;
588 int (*alert_value)(int);
589 int (*export_keying_material)(SSL *, unsigned char *, size_t,
590 const char *, size_t,
591 const unsigned char *, size_t,
593 /* Various flags indicating protocol version requirements */
594 unsigned int enc_flags;
595 /* Handshake header length */
597 /* Set the handshake header */
598 void (*set_handshake_header)(SSL *s, int type, unsigned long len);
599 /* Write out handshake message */
600 int (*do_write)(SSL *s);
603 #define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
604 #define ssl_handshake_start(s) \
605 (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
606 #define ssl_set_handshake_header(s, htype, len) \
607 s->method->ssl3_enc->set_handshake_header(s, htype, len)
608 #define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
610 /* Values for enc_flags */
612 /* Uses explicit IV for CBC mode */
613 #define SSL_ENC_FLAG_EXPLICIT_IV 0x1
614 /* Uses signature algorithms extension */
615 #define SSL_ENC_FLAG_SIGALGS 0x2
616 /* Uses SHA256 default PRF */
617 #define SSL_ENC_FLAG_SHA256_PRF 0x4
619 #define SSL_ENC_FLAG_DTLS 0x8
620 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2:
621 * may apply to others in future.
623 #define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
625 /* ssl_aead_ctx_st contains information about an AEAD that is being used to
626 * encrypt an SSL connection. */
627 struct ssl_aead_ctx_st
630 /* fixed_nonce contains any bytes of the nonce that are fixed for all
632 unsigned char fixed_nonce[8];
633 unsigned char fixed_nonce_len, variable_nonce_len, tag_len;
634 /* variable_nonce_included_in_record is non-zero if the variable nonce
635 * for a record is included as a prefix before the ciphertext. */
636 char variable_nonce_included_in_record;
640 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
641 extern const SSL_CIPHER ssl3_ciphers[];
644 SSL_METHOD *ssl_bad_method(int ver);
646 extern SSL3_ENC_METHOD TLSv1_enc_data;
647 extern SSL3_ENC_METHOD TLSv1_1_enc_data;
648 extern SSL3_ENC_METHOD TLSv1_2_enc_data;
649 extern SSL3_ENC_METHOD SSLv3_enc_data;
650 extern SSL3_ENC_METHOD DTLSv1_enc_data;
651 extern SSL3_ENC_METHOD DTLSv1_2_enc_data;
653 #define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
654 s_get_meth, enc_data) \
655 const SSL_METHOD *func_name(void) \
657 static const SSL_METHOD func_name##_data= { \
669 ssl3_renegotiate_check, \
673 ssl3_dispatch_alert, \
681 ssl_undefined_void_function, \
682 ssl3_callback_ctrl, \
683 ssl3_ctx_callback_ctrl, \
685 return &func_name##_data; \
688 #define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
689 const SSL_METHOD *func_name(void) \
691 static const SSL_METHOD func_name##_data= { \
703 ssl3_renegotiate_check, \
707 ssl3_dispatch_alert, \
715 ssl_undefined_void_function, \
716 ssl3_callback_ctrl, \
717 ssl3_ctx_callback_ctrl, \
719 return &func_name##_data; \
722 #define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
723 const SSL_METHOD *func_name(void) \
725 static const SSL_METHOD func_name##_data= { \
735 ssl_undefined_function, \
736 ssl_undefined_function, \
741 ssl3_dispatch_alert, \
744 ssl_undefined_const_function, \
749 ssl_undefined_void_function, \
750 ssl3_callback_ctrl, \
751 ssl3_ctx_callback_ctrl, \
753 return &func_name##_data; \
756 #define IMPLEMENT_dtls1_meth_func(version, func_name, s_accept, s_connect, \
757 s_get_meth, enc_data) \
758 const SSL_METHOD *func_name(void) \
760 static const SSL_METHOD func_name##_data= { \
772 ssl3_renegotiate_check, \
775 dtls1_write_app_data_bytes, \
776 dtls1_dispatch_alert, \
784 ssl_undefined_void_function, \
785 ssl3_callback_ctrl, \
786 ssl3_ctx_callback_ctrl, \
788 return &func_name##_data; \
791 void ssl_clear_cipher_ctx(SSL *s);
792 int ssl_clear_bad_session(SSL *s);
793 CERT *ssl_cert_new(void);
794 CERT *ssl_cert_dup(CERT *cert);
795 void ssl_cert_set_default_md(CERT *cert);
796 int ssl_cert_inst(CERT **o);
797 void ssl_cert_clear_certs(CERT *c);
798 void ssl_cert_free(CERT *c);
799 SESS_CERT *ssl_sess_cert_new(void);
800 void ssl_sess_cert_free(SESS_CERT *sc);
801 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
802 int ssl_get_prev_session(SSL *s, const struct ssl_early_callback_ctx *ctx);
803 int ssl_cipher_id_cmp(const void *in_a, const void *in_b);
804 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER **ap, const SSL_CIPHER **bp);
805 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const CBS *cbs,
806 STACK_OF(SSL_CIPHER) **skp);
807 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p);
808 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
809 struct ssl_cipher_preference_list_st **pref,
810 STACK_OF(SSL_CIPHER) **sorted,
811 const char *rule_str, CERT *c);
812 struct ssl_cipher_preference_list_st* ssl_cipher_preference_list_dup(
813 struct ssl_cipher_preference_list_st *cipher_list);
814 void ssl_cipher_preference_list_free(
815 struct ssl_cipher_preference_list_st *cipher_list);
816 struct ssl_cipher_preference_list_st* ssl_cipher_preference_list_from_ciphers(
817 STACK_OF(SSL_CIPHER) *ciphers);
818 struct ssl_cipher_preference_list_st* ssl_get_cipher_preferences(SSL *s);
819 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead);
820 int ssl_cipher_get_evp(const SSL_SESSION *s,const EVP_CIPHER **enc,
821 const EVP_MD **md,int *mac_pkey_type,int *mac_secret_size);
822 int ssl_cipher_get_mac(const SSL_SESSION *s, const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size);
823 int ssl_get_handshake_digest(int i,long *mask,const EVP_MD **md);
824 int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
825 int ssl_cipher_has_server_public_key(const SSL_CIPHER *cipher);
826 int ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher);
828 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain);
829 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain);
830 int ssl_cert_add0_chain_cert(CERT *c, X509 *x);
831 int ssl_cert_add1_chain_cert(CERT *c, X509 *x);
832 int ssl_cert_select_current(CERT *c, X509 *x);
833 void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg);
835 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
836 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
837 int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags);
838 int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
839 int ssl_undefined_function(SSL *s);
840 int ssl_undefined_void_function(void);
841 int ssl_undefined_const_function(const SSL *s);
842 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
843 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *c, const EVP_MD **pmd);
844 int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
845 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
846 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
847 int ssl_verify_alarm_type(long type);
848 int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
850 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value);
851 uint16_t ssl3_get_cipher_value(const SSL_CIPHER *c);
852 void ssl3_init_finished_mac(SSL *s);
853 int ssl3_send_server_certificate(SSL *s);
854 int ssl3_send_new_session_ticket(SSL *s);
855 int ssl3_send_cert_status(SSL *s);
856 int ssl3_get_finished(SSL *s,int state_a,int state_b);
857 int ssl3_setup_key_block(SSL *s);
858 int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
859 int ssl3_change_cipher_state(SSL *s,int which);
860 void ssl3_cleanup_key_block(SSL *s);
861 int ssl3_do_write(SSL *s,int type);
862 int ssl3_send_alert(SSL *s,int level, int desc);
863 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
864 unsigned char *p, int len);
865 int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
866 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int hash_message, int *ok);
868 /* ssl3_hash_current_message incorporates the current handshake message into
869 * the handshake hash. */
870 void ssl3_hash_current_message(SSL *s);
872 /* ssl3_cert_verify_hash writes the CertificateVerify hash into the bytes
873 * pointed to by |out| and writes the number of bytes to |*out_len|. |out| must
874 * have room for EVP_MAX_MD_SIZE bytes. For TLS 1.2 and up, |*out_md| is used
875 * for the hash function, otherwise the hash function depends on the type of
876 * |pkey| and is written to |*out_md|. It returns one on success and zero on
878 int ssl3_cert_verify_hash(SSL *s, uint8_t *out, size_t *out_len, const EVP_MD **out_md, EVP_PKEY *pkey);
880 int ssl3_send_finished(SSL *s, int a, int b, const char *sender,int slen);
881 int ssl3_num_ciphers(void);
882 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
883 int ssl3_renegotiate(SSL *ssl);
884 int ssl3_renegotiate_check(SSL *ssl);
885 int ssl3_dispatch_alert(SSL *s);
886 int ssl3_expect_change_cipher_spec(SSL *s);
887 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
888 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
889 int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,unsigned char *p);
890 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
891 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
892 int ssl3_enc(SSL *s, int send_data);
893 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
894 void ssl3_free_digest_list(SSL *s);
895 unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
896 const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *clnt,
897 struct ssl_cipher_preference_list_st *srvr);
898 int ssl3_setup_buffers(SSL *s);
899 int ssl3_setup_read_buffer(SSL *s);
900 int ssl3_setup_write_buffer(SSL *s);
901 int ssl3_release_read_buffer(SSL *s);
902 int ssl3_release_write_buffer(SSL *s);
903 int ssl3_digest_cached_records(SSL *s);
904 int ssl3_new(SSL *s);
905 void ssl3_free(SSL *s);
906 int ssl3_accept(SSL *s);
907 int ssl3_connect(SSL *s);
908 int ssl3_read(SSL *s, void *buf, int len);
909 int ssl3_peek(SSL *s, void *buf, int len);
910 int ssl3_write(SSL *s, const void *buf, int len);
911 int ssl3_shutdown(SSL *s);
912 void ssl3_clear(SSL *s);
913 long ssl3_ctrl(SSL *s,int cmd, long larg, void *parg);
914 long ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
915 long ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
916 long ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
917 int ssl3_pending(const SSL *s);
919 void ssl3_record_sequence_update(unsigned char *seq);
920 int ssl3_do_change_cipher_spec(SSL *ssl);
922 void ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
923 int ssl3_handshake_write(SSL *s);
925 int ssl23_read(SSL *s, void *buf, int len);
926 int ssl23_peek(SSL *s, void *buf, int len);
927 int ssl23_write(SSL *s, const void *buf, int len);
929 int dtls1_do_write(SSL *s,int type);
930 int ssl3_read_n(SSL *s, int n, int max, int extend);
931 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
932 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
934 unsigned char *dtls1_set_message_header(SSL *s,
935 unsigned char *p, unsigned char mt, unsigned long len,
936 unsigned long frag_off, unsigned long frag_len);
938 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
939 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
941 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
942 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
943 unsigned long dtls1_output_cert_chain(SSL *s, CERT_PKEY *cpk);
944 int dtls1_read_failed(SSL *s, int code);
945 int dtls1_buffer_message(SSL *s, int ccs);
946 int dtls1_retransmit_message(SSL *s, unsigned short seq,
947 unsigned long frag_off, int *found);
948 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
949 int dtls1_retransmit_buffered_messages(SSL *s);
950 void dtls1_clear_record_buffer(SSL *s);
951 void dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr);
952 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
953 void dtls1_reset_seq_numbers(SSL *s, int rw);
954 int dtls1_check_timeout_num(SSL *s);
955 int dtls1_handle_timeout(SSL *s);
956 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
957 void dtls1_start_timer(SSL *s);
958 void dtls1_stop_timer(SSL *s);
959 int dtls1_is_timer_expired(SSL *s);
960 void dtls1_double_timeout(SSL *s);
961 unsigned int dtls1_min_mtu(void);
963 /* some client-only functions */
964 int ssl3_send_client_hello(SSL *s);
965 int ssl3_get_server_hello(SSL *s);
966 int ssl3_get_certificate_request(SSL *s);
967 int ssl3_get_new_session_ticket(SSL *s);
968 int ssl3_get_cert_status(SSL *s);
969 int ssl3_get_server_done(SSL *s);
970 int ssl3_send_cert_verify(SSL *s);
971 int ssl3_send_client_certificate(SSL *s);
972 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
973 int ssl3_send_client_key_exchange(SSL *s);
974 int ssl3_get_server_key_exchange(SSL *s);
975 int ssl3_get_server_certificate(SSL *s);
976 int ssl3_check_cert_and_algorithm(SSL *s);
977 int ssl3_send_next_proto(SSL *s);
978 int ssl3_send_channel_id(SSL *s);
980 int dtls1_client_hello(SSL *s);
982 /* some server-only functions */
983 int ssl3_get_client_hello(SSL *s);
984 int ssl3_send_server_hello(SSL *s);
985 int ssl3_send_hello_request(SSL *s);
986 int ssl3_send_server_key_exchange(SSL *s);
987 int ssl3_send_certificate_request(SSL *s);
988 int ssl3_send_server_done(SSL *s);
989 int ssl3_get_client_certificate(SSL *s);
990 int ssl3_get_client_key_exchange(SSL *s);
991 int ssl3_get_cert_verify(SSL *s);
992 int ssl3_get_next_proto(SSL *s);
993 int ssl3_get_channel_id(SSL *s);
995 int ssl23_accept(SSL *s);
996 int ssl23_connect(SSL *s);
997 int ssl23_read_bytes(SSL *s, int n);
998 int ssl23_write_bytes(SSL *s);
1000 int dtls1_new(SSL *s);
1001 int dtls1_accept(SSL *s);
1002 int dtls1_connect(SSL *s);
1003 void dtls1_free(SSL *s);
1004 void dtls1_clear(SSL *s);
1005 long dtls1_ctrl(SSL *s,int cmd, long larg, void *parg);
1006 int dtls1_shutdown(SSL *s);
1008 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int hash_message, int *ok);
1009 int dtls1_get_record(SSL *s);
1010 int dtls1_dispatch_alert(SSL *s);
1011 int dtls1_enc(SSL *s, int snd);
1013 int ssl_init_wbio_buffer(SSL *s, int push);
1014 void ssl_free_wbio_buffer(SSL *s);
1016 int tls1_change_cipher_state(SSL *s, int which);
1017 int tls1_setup_key_block(SSL *s);
1018 int tls1_enc(SSL *s, int snd);
1019 int tls1_handshake_digest(SSL *s, unsigned char *out, size_t out_len);
1020 int tls1_final_finish_mac(SSL *s,
1021 const char *str, int slen, unsigned char *p);
1022 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1023 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1024 int tls1_generate_master_secret(SSL *s, unsigned char *out,
1025 unsigned char *p, int len);
1026 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1027 const char *label, size_t llen,
1028 const unsigned char *p, size_t plen, int use_context);
1029 int tls1_alert_code(int code);
1030 int ssl3_alert_code(int code);
1033 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1035 char ssl_early_callback_init(struct ssl_early_callback_ctx *ctx);
1036 int tls1_ec_curve_id2nid(uint16_t curve_id);
1037 uint16_t tls1_ec_nid2curve_id(int nid);
1039 /* tls1_check_curve parses ECParameters out of |cbs|, modifying it. It
1040 * checks the curve is one of our preferences and writes the
1041 * NamedCurve value to |*out_curve_id|. It returns one on success and
1043 int tls1_check_curve(SSL *s, CBS *cbs, uint16_t *out_curve_id);
1045 /* tls1_get_shared_curve returns the NID of the first preferred shared curve
1046 * between client and server preferences. If none can be found, it returns
1048 int tls1_get_shared_curve(SSL *s);
1050 /* tls1_set_curves converts the array of |ncurves| NIDs pointed to by |curves|
1051 * into a newly allocated array of TLS curve IDs. On success, the function
1052 * returns one and writes the array to |*out_curve_ids| and its size to
1053 * |*out_curve_ids_len|. Otherwise, it returns zero. */
1054 int tls1_set_curves(uint16_t **out_curve_ids, size_t *out_curve_ids_len,
1055 const int *curves, size_t ncurves);
1057 int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
1059 int tls1_shared_list(SSL *s,
1060 const unsigned char *l1, size_t l1len,
1061 const unsigned char *l2, size_t l2len,
1063 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf, unsigned char *limit, size_t header_len);
1064 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf, unsigned char *limit);
1065 int ssl_parse_clienthello_tlsext(SSL *s, CBS *cbs);
1066 int ssl_parse_serverhello_tlsext(SSL *s, CBS *cbs);
1067 int ssl_prepare_clienthello_tlsext(SSL *s);
1068 int ssl_prepare_serverhello_tlsext(SSL *s);
1070 #define tlsext_tick_md EVP_sha256
1071 int tls1_process_ticket(SSL *s, const struct ssl_early_callback_ctx *ctx,
1074 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1076 int tls12_get_sigid(const EVP_PKEY *pk);
1077 const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1079 int tls1_channel_id_hash(EVP_MD_CTX *ctx, SSL *s);
1080 int tls1_record_handshake_hashes_for_channel_id(SSL *s);
1082 int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
1083 int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
1084 int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
1086 void tls1_set_cert_validity(SSL *s);
1088 /* ssl_ctx_log_rsa_client_key_exchange logs |premaster| to |ctx|, if logging is
1089 * enabled. It returns one on success and zero on failure. The entry is
1090 * identified by the first 8 bytes of |encrypted_premaster|. */
1091 int ssl_ctx_log_rsa_client_key_exchange(SSL_CTX *ctx,
1092 const uint8_t *encrypted_premaster, size_t encrypted_premaster_len,
1093 const uint8_t *premaster, size_t premaster_len);
1095 /* ssl_ctx_log_master_secret logs |master| to |ctx|, if logging is enabled. It
1096 * returns one on success and zero on failure. The entry is identified by
1097 * |client_random|. */
1098 int ssl_ctx_log_master_secret(SSL_CTX *ctx,
1099 const uint8_t *client_random, size_t client_random_len,
1100 const uint8_t *master, size_t master_len);
1102 int ssl3_can_cutthrough(const SSL *s);
1103 int ssl_get_max_version(const SSL *s);
1104 EVP_MD_CTX* ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) ;
1105 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1106 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1108 int ssl_parse_serverhello_renegotiate_ext(SSL *s, CBS *cbs, int *out_alert);
1109 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1111 int ssl_parse_clienthello_renegotiate_ext(SSL *s, CBS *cbs, int *out_alert);
1112 long ssl_get_algorithm2(SSL *s);
1113 int tls1_process_sigalgs(SSL *s, const CBS *sigalgs);
1114 size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
1115 int tls12_check_peer_sigalg(const EVP_MD **out_md, int *out_alert, SSL *s,
1116 CBS *cbs, EVP_PKEY *pkey);
1117 void ssl_set_client_disabled(SSL *s);
1119 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
1120 int ssl_parse_clienthello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert);
1121 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
1122 int ssl_parse_serverhello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert);
1125 void ssl3_cbc_copy_mac(unsigned char* out,
1126 const SSL3_RECORD *rec,
1127 unsigned md_size,unsigned orig_len);
1128 int ssl3_cbc_remove_padding(const SSL* s,
1130 unsigned block_size,
1132 int tls1_cbc_remove_padding(const SSL* s,
1134 unsigned block_size,
1136 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1137 void ssl3_cbc_digest_record(
1138 const EVP_MD_CTX *ctx,
1139 unsigned char* md_out,
1140 size_t* md_out_size,
1141 const unsigned char header[13],
1142 const unsigned char *data,
1143 size_t data_plus_mac_size,
1144 size_t data_plus_mac_plus_padding_size,
1145 const unsigned char *mac_secret,
1146 unsigned mac_secret_length,