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1/* $OpenBSD: ssl_locl.h,v 1.100 2015/07/24 07:57:48 doug Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58/* ====================================================================
59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77 *
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
82 *
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
105 *
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
109 *
110 */
111/* ====================================================================
112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
113 * ECC cipher suite support in OpenSSL originally developed by
114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
115 */
116/* ====================================================================
117 * Copyright 2005 Nokia. All rights reserved.
118 *
119 * The portions of the attached software ("Contribution") is developed by
120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
121 * license.
122 *
123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
125 * support (see RFC 4279) to OpenSSL.
126 *
127 * No patent licenses or other rights except those expressly stated in
128 * the OpenSSL open source license shall be deemed granted or received
129 * expressly, by implication, estoppel, or otherwise.
130 *
131 * No assurances are provided by Nokia that the Contribution does not
132 * infringe the patent or other intellectual property rights of any third
133 * party or that the license provides you with all the necessary rights
134 * to make use of the Contribution.
135 *
136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
140 * OTHERWISE.
141 */
142
143#ifndef HEADER_SSL_LOCL_H
144#define HEADER_SSL_LOCL_H
145
146#include <sys/types.h>
147
148#include <errno.h>
149#include <stdlib.h>
150#include <string.h>
151#include <time.h>
152#include <unistd.h>
153
154#include <openssl/opensslconf.h>
155#include <openssl/bio.h>
156#include <openssl/buffer.h>
157#include <openssl/dsa.h>
158#include <openssl/err.h>
159#include <openssl/rsa.h>
160#include <openssl/ssl.h>
161#include <openssl/stack.h>
162
163#define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
164 l|=(((unsigned long)(*((c)++)))<< 8), \
165 l|=(((unsigned long)(*((c)++)))<<16), \
166 l|=(((unsigned long)(*((c)++)))<<24))
167
168/* NOTE - c is not incremented as per c2l */
169#define c2ln(c,l1,l2,n) { \
170 c+=n; \
171 l1=l2=0; \
172 switch (n) { \
173 case 8: l2 =((unsigned long)(*(--(c))))<<24; \
174 case 7: l2|=((unsigned long)(*(--(c))))<<16; \
175 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
176 case 5: l2|=((unsigned long)(*(--(c)))); \
177 case 4: l1 =((unsigned long)(*(--(c))))<<24; \
178 case 3: l1|=((unsigned long)(*(--(c))))<<16; \
179 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
180 case 1: l1|=((unsigned long)(*(--(c)))); \
181 } \
182 }
183
184#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
185 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
186 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
187 *((c)++)=(unsigned char)(((l)>>24)&0xff))
188
189#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \
190 l|=((unsigned long)(*((c)++)))<<16, \
191 l|=((unsigned long)(*((c)++)))<< 8, \
192 l|=((unsigned long)(*((c)++))))
193
194#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
195 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
196 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
197 *((c)++)=(unsigned char)(((l) )&0xff))
198
199#define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
200 *((c)++)=(unsigned char)(((l)>>48)&0xff), \
201 *((c)++)=(unsigned char)(((l)>>40)&0xff), \
202 *((c)++)=(unsigned char)(((l)>>32)&0xff), \
203 *((c)++)=(unsigned char)(((l)>>24)&0xff), \
204 *((c)++)=(unsigned char)(((l)>>16)&0xff), \
205 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
206 *((c)++)=(unsigned char)(((l) )&0xff))
207
208/* NOTE - c is not incremented as per l2c */
209#define l2cn(l1,l2,c,n) { \
210 c+=n; \
211 switch (n) { \
212 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
213 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
214 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
215 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
216 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
217 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
218 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
219 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
220 } \
221 }
222
223#define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \
224 (((unsigned int)(c[1])) )),c+=2)
225#define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
226 c[1]=(unsigned char)(((s) )&0xff)),c+=2)
227
228#define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
229 (((unsigned long)(c[1]))<< 8)| \
230 (((unsigned long)(c[2])) )),c+=3)
231
232#define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \
233 c[1]=(unsigned char)(((l)>> 8)&0xff), \
234 c[2]=(unsigned char)(((l) )&0xff)),c+=3)
235
236/* LOCAL STUFF */
237
238#define SSL_DECRYPT 0
239#define SSL_ENCRYPT 1
240
241/*
242 * Define the Bitmasks for SSL_CIPHER.algorithms.
243 * This bits are used packed as dense as possible. If new methods/ciphers
244 * etc will be added, the bits a likely to change, so this information
245 * is for internal library use only, even though SSL_CIPHER.algorithms
246 * can be publicly accessed.
247 * Use the according functions for cipher management instead.
248 *
249 * The bit mask handling in the selection and sorting scheme in
250 * ssl_create_cipher_list() has only limited capabilities, reflecting
251 * that the different entities within are mutually exclusive:
252 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
253 */
254
255/* Bits for algorithm_mkey (key exchange algorithm) */
256#define SSL_kRSA 0x00000001L /* RSA key exchange */
257#define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */
258#define SSL_kECDHr 0x00000020L /* ECDH cert, RSA CA cert */
259#define SSL_kECDHe 0x00000040L /* ECDH cert, ECDSA CA cert */
260#define SSL_kECDHE 0x00000080L /* ephemeral ECDH */
261#define SSL_kGOST 0x00000200L /* GOST key exchange */
262
263/* Bits for algorithm_auth (server authentication) */
264#define SSL_aRSA 0x00000001L /* RSA auth */
265#define SSL_aDSS 0x00000002L /* DSS auth */
266#define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */
267#define SSL_aECDH 0x00000010L /* Fixed ECDH auth (kECDHe or kECDHr) */
268#define SSL_aECDSA 0x00000040L /* ECDSA auth*/
269#define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */
270
271
272/* Bits for algorithm_enc (symmetric encryption) */
273#define SSL_DES 0x00000001L
274#define SSL_3DES 0x00000002L
275#define SSL_RC4 0x00000004L
276#define SSL_IDEA 0x00000008L
277#define SSL_eNULL 0x00000010L
278#define SSL_AES128 0x00000020L
279#define SSL_AES256 0x00000040L
280#define SSL_CAMELLIA128 0x00000080L
281#define SSL_CAMELLIA256 0x00000100L
282#define SSL_eGOST2814789CNT 0x00000200L
283#define SSL_AES128GCM 0x00000400L
284#define SSL_AES256GCM 0x00000800L
285#define SSL_CHACHA20POLY1305 0x00001000L
286
287#define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
288#define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256)
289
290
291/* Bits for algorithm_mac (symmetric authentication) */
292
293#define SSL_MD5 0x00000001L
294#define SSL_SHA1 0x00000002L
295#define SSL_GOST94 0x00000004L
296#define SSL_GOST89MAC 0x00000008L
297#define SSL_SHA256 0x00000010L
298#define SSL_SHA384 0x00000020L
299/* Not a real MAC, just an indication it is part of cipher */
300#define SSL_AEAD 0x00000040L
301#define SSL_STREEBOG256 0x00000080L
302#define SSL_STREEBOG512 0x00000100L
303
304/* Bits for algorithm_ssl (protocol version) */
305#define SSL_SSLV3 0x00000002L
306#define SSL_TLSV1 SSL_SSLV3 /* for now */
307#define SSL_TLSV1_2 0x00000004L
308
309
310/* Bits for algorithm2 (handshake digests and other extra flags) */
311
312#define SSL_HANDSHAKE_MAC_MD5 0x10
313#define SSL_HANDSHAKE_MAC_SHA 0x20
314#define SSL_HANDSHAKE_MAC_GOST94 0x40
315#define SSL_HANDSHAKE_MAC_SHA256 0x80
316#define SSL_HANDSHAKE_MAC_SHA384 0x100
317#define SSL_HANDSHAKE_MAC_STREEBOG256 0x200
318#define SSL_HANDSHAKE_MAC_STREEBOG512 0x400
319#define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
320
321/* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX
322 * make sure to update this constant too */
323#define SSL_MAX_DIGEST 8
324
325#define SSL3_CK_ID 0x03000000
326#define SSL3_CK_VALUE_MASK 0x0000ffff
327
328#define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT)
329
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_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
336#define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT)
337#define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
338
339/* Stream MAC for GOST ciphersuites from cryptopro draft
340 * (currently this also goes into algorithm2) */
341#define TLS1_STREAM_MAC 0x04
342
343/*
344 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that
345 * indicates that the variable part of the nonce is included as a prefix of
346 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.)
347 */
348#define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22)
349
350/*
351 * SSL_CIPHER_ALGORITHM2_AEAD is an algorithm2 flag that indicates the cipher
352 * is implemented via an EVP_AEAD.
353 */
354#define SSL_CIPHER_ALGORITHM2_AEAD (1 << 23)
355
356/*
357 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce
358 * for an SSL_CIPHER with the SSL_CIPHER_ALGORITHM2_AEAD flag.
359 */
360#define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \
361 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2)
362
363/*
364 * Cipher strength information.
365 */
366#define SSL_STRONG_MASK 0x000001fcL
367#define SSL_STRONG_NONE 0x00000004L
368#define SSL_LOW 0x00000020L
369#define SSL_MEDIUM 0x00000040L
370#define SSL_HIGH 0x00000080L
371
372/*
373 * The keylength (measured in RSA key bits, I guess) for temporary keys.
374 * Cipher argument is so that this can be variable in the future.
375 */
376#define SSL_C_PKEYLENGTH(c) 1024
377
378/* Check if an SSL structure is using DTLS. */
379#define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
380
381/* See if we need explicit IV. */
382#define SSL_USE_EXPLICIT_IV(s) \
383 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
384
385/* See if we use signature algorithms extension. */
386#define SSL_USE_SIGALGS(s) \
387 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
388
389/* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */
390#define SSL_USE_TLS1_2_CIPHERS(s) \
391 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
392
393/* Mostly for SSLv3 */
394#define SSL_PKEY_RSA_ENC 0
395#define SSL_PKEY_RSA_SIGN 1
396#define SSL_PKEY_DSA_SIGN 2
397#define SSL_PKEY_DH_RSA 3
398#define SSL_PKEY_DH_DSA 4
399#define SSL_PKEY_ECC 5
400#define SSL_PKEY_GOST01 6
401#define SSL_PKEY_NUM 7
402
403/* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
404 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
405 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
406 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN
407 * SSL_aRSA <- RSA_ENC | RSA_SIGN
408 * SSL_aDSS <- DSA_SIGN
409 */
410
411/*
412#define CERT_INVALID 0
413#define CERT_PUBLIC_KEY 1
414#define CERT_PRIVATE_KEY 2
415*/
416
417/* From ECC-TLS draft, used in encoding the curve type in
418 * ECParameters
419 */
420#define EXPLICIT_PRIME_CURVE_TYPE 1
421#define EXPLICIT_CHAR2_CURVE_TYPE 2
422#define NAMED_CURVE_TYPE 3
423
424typedef struct cert_pkey_st {
425 X509 *x509;
426 EVP_PKEY *privatekey;
427 /* Digest to use when signing */
428 const EVP_MD *digest;
429} CERT_PKEY;
430
431typedef struct cert_st {
432 /* Current active set */
433 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
434 * Probably it would make more sense to store
435 * an index, not a pointer. */
436
437 /* The following masks are for the key and auth
438 * algorithms that are supported by the certs below */
439 int valid;
440 unsigned long mask_k;
441 unsigned long mask_a;
442
443 DH *dh_tmp;
444 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize);
445 int dh_tmp_auto;
446
447 EC_KEY *ecdh_tmp;
448 EC_KEY *(*ecdh_tmp_cb)(SSL *ssl, int is_export, int keysize);
449 int ecdh_tmp_auto;
450
451 CERT_PKEY pkeys[SSL_PKEY_NUM];
452
453 int references; /* >1 only if SSL_copy_session_id is used */
454} CERT;
455
456
457typedef struct sess_cert_st {
458 STACK_OF(X509) *cert_chain; /* as received from peer */
459
460 /* The 'peer_...' members are used only by clients. */
461 int peer_cert_type;
462
463 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
464 CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
465 /* Obviously we don't have the private keys of these,
466 * so maybe we shouldn't even use the CERT_PKEY type here. */
467
468 DH *peer_dh_tmp;
469 EC_KEY *peer_ecdh_tmp;
470
471 int references; /* actually always 1 at the moment */
472} SESS_CERT;
473
474
475/*#define SSL_DEBUG */
476/*#define RSA_DEBUG */
477
478/* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
479 * It is a bit of a mess of functions, but hell, think of it as
480 * an opaque structure :-) */
481typedef struct ssl3_enc_method {
482 int (*enc)(SSL *, int);
483 int (*mac)(SSL *, unsigned char *, int);
484 int (*setup_key_block)(SSL *);
485 int (*generate_master_secret)(SSL *, unsigned char *,
486 unsigned char *, int);
487 int (*change_cipher_state)(SSL *, int);
488 int (*final_finish_mac)(SSL *, const char *, int, unsigned char *);
489 int finish_mac_length;
490 int (*cert_verify_mac)(SSL *, int, unsigned char *);
491 const char *client_finished_label;
492 int client_finished_label_len;
493 const char *server_finished_label;
494 int server_finished_label_len;
495 int (*alert_value)(int);
496 int (*export_keying_material)(SSL *, unsigned char *, size_t,
497 const char *, size_t, const unsigned char *, size_t,
498 int use_context);
499 /* Flags indicating protocol version requirements. */
500 unsigned int enc_flags;
501} SSL3_ENC_METHOD;
502
503/*
504 * Flag values for enc_flags.
505 */
506
507/* Uses explicit IV. */
508#define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0)
509
510/* Uses signature algorithms extension. */
511#define SSL_ENC_FLAG_SIGALGS (1 << 1)
512
513/* Uses SHA256 default PRF. */
514#define SSL_ENC_FLAG_SHA256_PRF (1 << 2)
515
516/* Is DTLS. */
517#define SSL_ENC_FLAG_DTLS (1 << 3)
518
519/* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */
520#define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4)
521
522/*
523 * ssl_aead_ctx_st contains information about an AEAD that is being used to
524 * encrypt an SSL connection.
525 */
526struct ssl_aead_ctx_st {
527 EVP_AEAD_CTX ctx;
528 /*
529 * fixed_nonce contains any bytes of the nonce that are fixed for all
530 * records.
531 */
532 unsigned char fixed_nonce[8];
533 unsigned char fixed_nonce_len;
534 unsigned char variable_nonce_len;
535 unsigned char tag_len;
536 /*
537 * variable_nonce_in_record is non-zero if the variable nonce
538 * for a record is included as a prefix before the ciphertext.
539 */
540 char variable_nonce_in_record;
541};
542
543extern SSL3_ENC_METHOD ssl3_undef_enc_method;
544extern SSL_CIPHER ssl3_ciphers[];
545
546SSL_METHOD *ssl_bad_method(int ver);
547const char *ssl_version_string(int ver);
548uint16_t ssl_max_server_version(SSL *s);
549
550extern SSL3_ENC_METHOD TLSv1_enc_data;
551extern SSL3_ENC_METHOD TLSv1_1_enc_data;
552extern SSL3_ENC_METHOD TLSv1_2_enc_data;
553extern SSL3_ENC_METHOD SSLv3_enc_data;
554extern SSL3_ENC_METHOD DTLSv1_enc_data;
555
556void ssl_clear_cipher_ctx(SSL *s);
557int ssl_clear_bad_session(SSL *s);
558CERT *ssl_cert_new(void);
559CERT *ssl_cert_dup(CERT *cert);
560int ssl_cert_inst(CERT **o);
561void ssl_cert_free(CERT *c);
562SESS_CERT *ssl_sess_cert_new(void);
563void ssl_sess_cert_free(SESS_CERT *sc);
564int ssl_set_peer_cert_type(SESS_CERT *c, int type);
565int ssl_get_new_session(SSL *s, int session);
566int ssl_get_prev_session(SSL *s, unsigned char *session, int len,
567 const unsigned char *limit);
568int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b);
569DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
570int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
571 const SSL_CIPHER * const *bp);
572STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p,
573 int num);
574int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
575 unsigned char *p);
576STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
577 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted,
578 const char *rule_str);
579void ssl_update_cache(SSL *s, int mode);
580int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
581 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size);
582int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead);
583int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md);
584
585int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk);
586int ssl_undefined_function(SSL *s);
587int ssl_undefined_void_function(void);
588int ssl_undefined_const_function(const SSL *s);
589CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
590X509 *ssl_get_server_send_cert(const SSL *);
591EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd);
592DH *ssl_get_auto_dh(SSL *s);
593int ssl_cert_type(X509 *x, EVP_PKEY *pkey);
594void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
595STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
596int ssl_verify_alarm_type(long type);
597void ssl_load_ciphers(void);
598
599const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
600int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
601int ssl3_init_finished_mac(SSL *s);
602int ssl3_send_server_certificate(SSL *s);
603int ssl3_send_newsession_ticket(SSL *s);
604int ssl3_send_cert_status(SSL *s);
605int ssl3_get_finished(SSL *s, int state_a, int state_b);
606int ssl3_setup_key_block(SSL *s);
607int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b);
608int ssl3_change_cipher_state(SSL *s, int which);
609void ssl3_cleanup_key_block(SSL *s);
610int ssl3_do_write(SSL *s, int type);
611int ssl3_send_alert(SSL *s, int level, int desc);
612int ssl3_generate_master_secret(SSL *s, unsigned char *out,
613 unsigned char *p, int len);
614int ssl3_get_req_cert_type(SSL *s, unsigned char *p);
615long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
616int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen);
617int ssl3_num_ciphers(void);
618const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
619const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id);
620const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value);
621uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c);
622int ssl3_renegotiate(SSL *ssl);
623
624int ssl3_renegotiate_check(SSL *ssl);
625
626int ssl3_dispatch_alert(SSL *s);
627int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
628int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
629int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,
630 unsigned char *p);
631int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
632void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
633int ssl3_enc(SSL *s, int send_data);
634int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
635void ssl3_free_digest_list(SSL *s);
636unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
637SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt,
638 STACK_OF(SSL_CIPHER) *srvr);
639int ssl3_setup_buffers(SSL *s);
640int ssl3_setup_init_buffer(SSL *s);
641int ssl3_setup_read_buffer(SSL *s);
642int ssl3_setup_write_buffer(SSL *s);
643int ssl3_release_read_buffer(SSL *s);
644int ssl3_release_write_buffer(SSL *s);
645int ssl3_digest_cached_records(SSL *s);
646int ssl3_new(SSL *s);
647void ssl3_free(SSL *s);
648int ssl3_accept(SSL *s);
649int ssl3_connect(SSL *s);
650int ssl3_read(SSL *s, void *buf, int len);
651int ssl3_peek(SSL *s, void *buf, int len);
652int ssl3_write(SSL *s, const void *buf, int len);
653int ssl3_shutdown(SSL *s);
654void ssl3_clear(SSL *s);
655long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg);
656long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg);
657long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void));
658long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void));
659int ssl3_pending(const SSL *s);
660
661unsigned char *ssl3_handshake_msg_start(SSL *s, uint8_t htype);
662void ssl3_handshake_msg_finish(SSL *s, unsigned int len);
663int ssl3_handshake_write(SSL *s);
664
665void ssl3_record_sequence_increment(unsigned char *seq);
666int ssl3_do_change_cipher_spec(SSL *ssl);
667long ssl3_default_timeout(void);
668
669int ssl23_read(SSL *s, void *buf, int len);
670int ssl23_peek(SSL *s, void *buf, int len);
671int ssl23_write(SSL *s, const void *buf, int len);
672long ssl23_default_timeout(void);
673
674long tls1_default_timeout(void);
675int dtls1_do_write(SSL *s, int type);
676int ssl3_read_n(SSL *s, int n, int max, int extend);
677int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
678int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
679 unsigned int len);
680unsigned char *dtls1_set_message_header(SSL *s, unsigned char *p,
681 unsigned char mt, unsigned long len, unsigned long frag_off,
682 unsigned long frag_len);
683
684int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
685int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
686
687int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
688int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
689unsigned long dtls1_output_cert_chain(SSL *s, X509 *x);
690int dtls1_read_failed(SSL *s, int code);
691int dtls1_buffer_message(SSL *s, int ccs);
692int dtls1_retransmit_message(SSL *s, unsigned short seq,
693 unsigned long frag_off, int *found);
694int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
695int dtls1_retransmit_buffered_messages(SSL *s);
696void dtls1_clear_record_buffer(SSL *s);
697int dtls1_get_message_header(unsigned char *data,
698 struct hm_header_st *msg_hdr);
699void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
700void dtls1_reset_seq_numbers(SSL *s, int rw);
701void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq,
702 unsigned short epoch);
703long dtls1_default_timeout(void);
704struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft);
705int dtls1_check_timeout_num(SSL *s);
706int dtls1_handle_timeout(SSL *s);
707const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
708void dtls1_start_timer(SSL *s);
709void dtls1_stop_timer(SSL *s);
710int dtls1_is_timer_expired(SSL *s);
711void dtls1_double_timeout(SSL *s);
712int dtls1_send_newsession_ticket(SSL *s);
713unsigned int dtls1_min_mtu(void);
714
715/* some client-only functions */
716int ssl3_client_hello(SSL *s);
717int ssl3_get_server_hello(SSL *s);
718int ssl3_get_certificate_request(SSL *s);
719int ssl3_get_new_session_ticket(SSL *s);
720int ssl3_get_cert_status(SSL *s);
721int ssl3_get_server_done(SSL *s);
722int ssl3_send_client_verify(SSL *s);
723int ssl3_send_client_certificate(SSL *s);
724int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
725int ssl3_send_client_key_exchange(SSL *s);
726int ssl3_get_key_exchange(SSL *s);
727int ssl3_get_server_certificate(SSL *s);
728int ssl3_check_cert_and_algorithm(SSL *s);
729int ssl3_check_finished(SSL *s);
730int ssl3_send_next_proto(SSL *s);
731
732int dtls1_client_hello(SSL *s);
733int dtls1_send_client_certificate(SSL *s);
734int dtls1_send_client_key_exchange(SSL *s);
735int dtls1_send_client_verify(SSL *s);
736
737/* some server-only functions */
738int ssl3_get_client_hello(SSL *s);
739int ssl3_send_server_hello(SSL *s);
740int ssl3_send_hello_request(SSL *s);
741int ssl3_send_server_key_exchange(SSL *s);
742int ssl3_send_certificate_request(SSL *s);
743int ssl3_send_server_done(SSL *s);
744int ssl3_get_client_certificate(SSL *s);
745int ssl3_get_client_key_exchange(SSL *s);
746int ssl3_get_cert_verify(SSL *s);
747int ssl3_get_next_proto(SSL *s);
748
749int dtls1_send_hello_request(SSL *s);
750int dtls1_send_server_hello(SSL *s);
751int dtls1_send_server_certificate(SSL *s);
752int dtls1_send_server_key_exchange(SSL *s);
753int dtls1_send_certificate_request(SSL *s);
754int dtls1_send_server_done(SSL *s);
755
756int ssl23_accept(SSL *s);
757int ssl23_connect(SSL *s);
758int ssl23_read_bytes(SSL *s, int n);
759int ssl23_write_bytes(SSL *s);
760int tls_any_accept(SSL *s);
761int tls_any_connect(SSL *s);
762
763int tls1_new(SSL *s);
764void tls1_free(SSL *s);
765void tls1_clear(SSL *s);
766long tls1_ctrl(SSL *s, int cmd, long larg, void *parg);
767long tls1_callback_ctrl(SSL *s, int cmd, void (*fp)(void));
768
769int dtls1_new(SSL *s);
770int dtls1_accept(SSL *s);
771int dtls1_connect(SSL *s);
772void dtls1_free(SSL *s);
773void dtls1_clear(SSL *s);
774long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg);
775int dtls1_shutdown(SSL *s);
776
777long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
778int dtls1_get_record(SSL *s);
779int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
780 unsigned int len);
781int dtls1_dispatch_alert(SSL *s);
782int dtls1_enc(SSL *s, int snd);
783
784int ssl_init_wbio_buffer(SSL *s, int push);
785void ssl_free_wbio_buffer(SSL *s);
786
787int tls1_change_cipher_state(SSL *s, int which);
788int tls1_setup_key_block(SSL *s);
789int tls1_enc(SSL *s, int snd);
790int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p);
791int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
792int tls1_mac(SSL *ssl, unsigned char *md, int snd);
793int tls1_generate_master_secret(SSL *s, unsigned char *out,
794 unsigned char *p, int len);
795int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
796 const char *label, size_t llen, const unsigned char *p, size_t plen,
797 int use_context);
798int tls1_alert_code(int code);
799int ssl3_alert_code(int code);
800int ssl_ok(SSL *s);
801
802int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
803
804SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
805
806int tls1_ec_curve_id2nid(uint16_t curve_id);
807uint16_t tls1_ec_nid2curve_id(int nid);
808int tls1_check_curve(SSL *s, const unsigned char *p, size_t len);
809int tls1_get_shared_curve(SSL *s);
810
811unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p,
812 unsigned char *limit);
813
814unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p,
815 unsigned char *limit);
816
817int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data,
818 unsigned char *d, int n, int *al);
819int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data,
820 unsigned char *d, int n, int *al);
821int ssl_prepare_clienthello_tlsext(SSL *s);
822int ssl_prepare_serverhello_tlsext(SSL *s);
823int ssl_check_clienthello_tlsext_early(SSL *s);
824int ssl_check_clienthello_tlsext_late(SSL *s);
825int ssl_check_serverhello_tlsext(SSL *s);
826
827#define tlsext_tick_md EVP_sha256
828int tls1_process_ticket(SSL *s, const unsigned char *session_id, int len,
829 const unsigned char *limit, SSL_SESSION **ret);
830int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
831 const EVP_MD *md);
832int tls12_get_sigid(const EVP_PKEY *pk);
833const EVP_MD *tls12_get_hash(unsigned char hash_alg);
834
835EVP_MD_CTX* ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md);
836void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
837int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p,
838 int *len, int maxlen);
839int ssl_parse_serverhello_renegotiate_ext(SSL *s, const unsigned char *d,
840 int len, int *al);
841int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p,
842 int *len, int maxlen);
843int ssl_parse_clienthello_renegotiate_ext(SSL *s, const unsigned char *d,
844 int len, int *al);
845long ssl_get_algorithm2(SSL *s);
846int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize);
847int tls12_get_req_sig_algs(SSL *s, unsigned char *p);
848
849int tls1_check_ec_server_key(SSL *s);
850int tls1_check_ec_tmp_key(SSL *s);
851
852int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p,
853 int *len, int maxlen);
854int ssl_parse_clienthello_use_srtp_ext(SSL *s, const unsigned char *d,
855 int len, int *al);
856int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p,
857 int *len, int maxlen);
858int ssl_parse_serverhello_use_srtp_ext(SSL *s, const unsigned char *d,
859 int len, int *al);
860
861/* s3_cbc.c */
862void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD *rec,
863 unsigned md_size, unsigned orig_len);
864int ssl3_cbc_remove_padding(const SSL *s, SSL3_RECORD *rec,
865 unsigned block_size, unsigned mac_size);
866int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD *rec,
867 unsigned block_size, unsigned mac_size);
868char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
869int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out,
870 size_t *md_out_size, const unsigned char header[13],
871 const unsigned char *data, size_t data_plus_mac_size,
872 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret,
873 unsigned mac_secret_length, char is_sslv3);
874
875#endif
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