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Adam Langley95c29f32014-06-20 12:00:00 -07001/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
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.
7 *
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).
14 *
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.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
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)"
39 *
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
50 * SUCH DAMAGE.
51 *
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.]
56 */
57/* ====================================================================
58 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
59 *
60 * Redistribution and use in source and binary forms, with or without
61 * modification, are permitted provided that the following conditions
62 * are met:
63 *
64 * 1. Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
66 *
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
70 * distribution.
71 *
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/)"
76 *
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.
81 *
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.
85 *
86 * 6. Redistributions of any form whatsoever must retain the following
87 * acknowledgment:
88 * "This product includes software developed by the OpenSSL Project
89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
90 *
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 * ====================================================================
104 *
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).
108 *
109 */
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.
114 */
115/* ====================================================================
116 * Copyright 2005 Nokia. All rights reserved.
117 *
118 * The portions of the attached software ("Contribution") is developed by
119 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
120 * license.
121 *
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.
125 *
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.
129 *
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.
134 *
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
139 * OTHERWISE.
140 */
141
142#ifndef HEADER_SSL_LOCL_H
143#define HEADER_SSL_LOCL_H
144
145#include <openssl/base.h>
146
147#include <errno.h>
148#include <stdlib.h>
149#include <string.h>
150#include <time.h>
151
Adam Langleyc9fb3752014-06-20 12:00:00 -0700152#include <openssl/aead.h>
Adam Langley95c29f32014-06-20 12:00:00 -0700153#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>
160
Adam Langley95c29f32014-06-20 12:00:00 -0700161#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))
165
166/* NOTE - c is not incremented as per c2l */
167#define c2ln(c,l1,l2,n) { \
168 c+=n; \
169 l1=l2=0; \
170 switch (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)))); \
179 } \
180 }
181
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))
186
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)++))))
191
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))
196
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))
203
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))
212
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)++))))
219
220/* NOTE - c is not incremented as per l2c */
221#define l2cn(l1,l2,c,n) { \
222 c+=n; \
223 switch (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); \
232 } \
233 }
234
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)
239
240#define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \
241 (((unsigned long)(c[1]))<< 8)| \
242 (((unsigned long)(c[2])) )),c+=3)
243
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)
247
248/* LOCAL STUFF */
249
250#define SSL_DECRYPT 0
251#define SSL_ENCRYPT 1
252
253#define TWO_BYTE_BIT 0x80
254#define SEC_ESC_BIT 0x40
255#define TWO_BYTE_MASK 0x7fff
256#define THREE_BYTE_MASK 0x3fff
257
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 */
261
262/*
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.
269 *
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.
274 */
275
276/* Bits for algorithm_mkey (key exchange algorithm) */
277#define SSL_kRSA 0x00000001L /* RSA key exchange */
David Benjamin0da0e182014-08-19 16:20:28 -0400278#define SSL_kEDH 0x00000002L /* tmp DH key no DH cert */
279#define SSL_kEECDH 0x00000004L /* ephemeral ECDH */
280#define SSL_kPSK 0x00000008L /* PSK */
Adam Langley95c29f32014-06-20 12:00:00 -0700281
282/* Bits for algorithm_auth (server authentication) */
283#define SSL_aRSA 0x00000001L /* RSA auth */
David Benjaminef2116d2014-08-19 20:21:56 -0400284#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 */
Adam Langley95c29f32014-06-20 12:00:00 -0700287
288
289/* Bits for algorithm_enc (symmetric encryption) */
David Benjamind0639af2014-08-19 15:25:49 -0400290#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
Adam Langley95c29f32014-06-20 12:00:00 -0700297
298#define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
Adam Langley95c29f32014-06-20 12:00:00 -0700299
300
301/* Bits for algorithm_mac (symmetric authentication) */
302
303#define SSL_MD5 0x00000001L
304#define SSL_SHA1 0x00000002L
David Benjamin019c3cc2014-07-14 23:13:22 -0400305#define SSL_SHA256 0x00000004L
306#define SSL_SHA384 0x00000008L
Adam Langley95c29f32014-06-20 12:00:00 -0700307/* Not a real MAC, just an indication it is part of cipher */
David Benjamin019c3cc2014-07-14 23:13:22 -0400308#define SSL_AEAD 0x00000010L
Adam Langley95c29f32014-06-20 12:00:00 -0700309
310/* Bits for algorithm_ssl (protocol version) */
Adam Langley95c29f32014-06-20 12:00:00 -0700311#define SSL_SSLV3 0x00000002L
312#define SSL_TLSV1 SSL_SSLV3 /* for now */
313#define SSL_TLSV1_2 0x00000004L
314
315
316/* Bits for algorithm2 (handshake digests and other extra flags) */
317
318#define SSL_HANDSHAKE_MAC_MD5 0x10
319#define SSL_HANDSHAKE_MAC_SHA 0x20
David Benjamin019c3cc2014-07-14 23:13:22 -0400320#define SSL_HANDSHAKE_MAC_SHA256 0x40
321#define SSL_HANDSHAKE_MAC_SHA384 0x80
Adam Langley95c29f32014-06-20 12:00:00 -0700322#define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
323
324/* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX
325 * make sure to update this constant too */
David Benjamin019c3cc2014-07-14 23:13:22 -0400326#define SSL_MAX_DIGEST 4
Adam Langley95c29f32014-06-20 12:00:00 -0700327
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)
Adam Langley95c29f32014-06-20 12:00:00 -0700335#define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
336
Adam Langley1258b6a2014-06-20 12:00:00 -0700337#define TLSEXT_CHANNEL_ID_SIZE 128
Adam Langley95c29f32014-06-20 12:00:00 -0700338
Adam Langleyc9fb3752014-06-20 12:00:00 -0700339/* 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)
342
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)
Adam Langley95c29f32014-06-20 12:00:00 -0700347
Adam Langleyde0b2022014-06-20 12:00:00 -0700348/* 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)
353
Adam Langley9447dff2014-06-24 17:29:06 -0700354/* 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)
358
Adam Langley95c29f32014-06-20 12:00:00 -0700359/*
David Benjaminebf42b52014-08-19 15:18:42 -0400360 * Cipher strength information.
Adam Langley95c29f32014-06-20 12:00:00 -0700361 */
362#define SSL_EXP_MASK 0x00000003L
363#define SSL_STRONG_MASK 0x000001fcL
364
365#define SSL_NOT_EXP 0x00000001L
Adam Langley95c29f32014-06-20 12:00:00 -0700366
Adam Langley95c29f32014-06-20 12:00:00 -0700367#define SSL_MEDIUM 0x00000040L
368#define SSL_HIGH 0x00000080L
369#define SSL_FIPS 0x00000100L
370
371/* we have used 000001ff - 23 bits left to go */
372
Adam Langley95c29f32014-06-20 12:00:00 -0700373/* Check if an SSL structure is using DTLS */
374#define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS)
375/* See if we need explicit IV */
376#define SSL_USE_EXPLICIT_IV(s) \
377 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV)
378/* See if we use signature algorithms extension
379 * and signature algorithm before signatures.
380 */
381#define SSL_USE_SIGALGS(s) \
382 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS)
383/* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2:
384 * may apply to others in future.
385 */
386#define SSL_USE_TLS1_2_CIPHERS(s) \
387 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS)
388/* Determine if a client can use TLS 1.2 ciphersuites: can't rely on method
389 * flags because it may not be set to correct version yet.
390 */
391#define SSL_CLIENT_USE_TLS1_2_CIPHERS(s) \
392 ((SSL_IS_DTLS(s) && s->client_version <= DTLS1_2_VERSION) || \
393 (!SSL_IS_DTLS(s) && s->client_version >= TLS1_2_VERSION))
394
395/* Mostly for SSLv3 */
396#define SSL_PKEY_RSA_ENC 0
397#define SSL_PKEY_RSA_SIGN 1
David Benjamina7d13632014-08-19 20:32:41 -0400398#define SSL_PKEY_ECC 2
399#define SSL_PKEY_NUM 3
Adam Langley95c29f32014-06-20 12:00:00 -0700400
401/* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
402 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
403 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
404 * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
405 * SSL_aRSA <- RSA_ENC | RSA_SIGN
406 * SSL_aDSS <- DSA_SIGN
407 */
408
409/*
410#define CERT_INVALID 0
411#define CERT_PUBLIC_KEY 1
412#define CERT_PRIVATE_KEY 2
413*/
414
Adam Langleyb2ce0582014-06-20 12:00:00 -0700415#define PENDING_SESSION -10000
Adam Langleydc9b1412014-06-20 12:00:00 -0700416#define CERTIFICATE_SELECTION_PENDING -10001
Adam Langleyb2ce0582014-06-20 12:00:00 -0700417
Adam Langley95c29f32014-06-20 12:00:00 -0700418#ifndef OPENSSL_NO_EC
419/* From ECC-TLS draft, used in encoding the curve type in
420 * ECParameters
421 */
422#define EXPLICIT_PRIME_CURVE_TYPE 1
423#define EXPLICIT_CHAR2_CURVE_TYPE 2
424#define NAMED_CURVE_TYPE 3
425#endif /* OPENSSL_NO_EC */
426
427typedef struct cert_pkey_st
428 {
429 X509 *x509;
430 EVP_PKEY *privatekey;
431 /* Digest to use when signing */
432 const EVP_MD *digest;
433 /* Chain for this certificate */
434 STACK_OF(X509) *chain;
Adam Langley95c29f32014-06-20 12:00:00 -0700435 /* Set if CERT_PKEY can be used with current SSL session: e.g.
436 * appropriate curve, signature algorithms etc. If zero it can't be
437 * used at all.
438 */
439 int valid_flags;
440 } CERT_PKEY;
David Benjamin335d10d2014-08-06 19:56:33 -0400441
Adam Langley95c29f32014-06-20 12:00:00 -0700442#define SSL_CERT_FLAGS_CHECK_TLS_STRICT \
David Benjamin335d10d2014-08-06 19:56:33 -0400443 SSL_CERT_FLAG_TLS_STRICT
Adam Langley95c29f32014-06-20 12:00:00 -0700444
445typedef struct cert_st
446 {
447 /* Current active set */
448 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
449 * Probably it would make more sense to store
450 * an index, not a pointer. */
451
452 /* For servers the following masks are for the key and auth
453 * algorithms that are supported by the certs below.
454 * For clients they are masks of *disabled* algorithms based
455 * on the current session.
456 */
457 int valid;
458 unsigned long mask_k;
459 unsigned long mask_a;
Adam Langley95c29f32014-06-20 12:00:00 -0700460 /* Client only */
461 unsigned long mask_ssl;
Adam Langley95c29f32014-06-20 12:00:00 -0700462#ifndef OPENSSL_NO_DH
463 DH *dh_tmp;
464 DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
465#endif
466#ifndef OPENSSL_NO_ECDH
467 EC_KEY *ecdh_tmp;
468 /* Callback for generating ephemeral ECDH keys */
469 EC_KEY *(*ecdh_tmp_cb)(SSL *ssl,int is_export,int keysize);
470 /* Select ECDH parameters automatically */
471 int ecdh_tmp_auto;
472#endif
473 /* Flags related to certificates */
474 unsigned int cert_flags;
475 CERT_PKEY pkeys[SSL_PKEY_NUM];
476
David Benjamin676d1e72014-07-08 14:34:10 -0400477 /* Server-only: client_certificate_types is list of certificate types to
478 * include in the CertificateRequest message.
Adam Langley95c29f32014-06-20 12:00:00 -0700479 */
David Benjamin676d1e72014-07-08 14:34:10 -0400480 unsigned char *client_certificate_types;
481 size_t num_client_certificate_types;
Adam Langley95c29f32014-06-20 12:00:00 -0700482
483 /* signature algorithms peer reports: e.g. supported signature
484 * algorithms extension for server or as part of a certificate
485 * request for client.
486 */
487 unsigned char *peer_sigalgs;
488 /* Size of above array */
489 size_t peer_sigalgslen;
490 /* suppported signature algorithms.
491 * When set on a client this is sent in the client hello as the
492 * supported signature algorithms extension. For servers
493 * it represents the signature algorithms we are willing to use.
494 */
495 unsigned char *conf_sigalgs;
496 /* Size of above array */
497 size_t conf_sigalgslen;
498 /* Client authentication signature algorithms, if not set then
499 * uses conf_sigalgs. On servers these will be the signature
500 * algorithms sent to the client in a cerificate request for TLS 1.2.
501 * On a client this represents the signature algortithms we are
502 * willing to use for client authentication.
503 */
504 unsigned char *client_sigalgs;
505 /* Size of above array */
506 size_t client_sigalgslen;
507 /* Signature algorithms shared by client and server: cached
508 * because these are used most often.
509 */
510 TLS_SIGALGS *shared_sigalgs;
511 size_t shared_sigalgslen;
512
513 /* Certificate setup callback: if set is called whenever a
514 * certificate may be required (client or server). the callback
515 * can then examine any appropriate parameters and setup any
516 * certificates required. This allows advanced applications
517 * to select certificates on the fly: for example based on
518 * supported signature algorithms or curves.
519 */
520 int (*cert_cb)(SSL *ssl, void *arg);
521 void *cert_cb_arg;
522
523 /* Optional X509_STORE for chain building or certificate validation
524 * If NULL the parent SSL_CTX store is used instead.
525 */
526 X509_STORE *chain_store;
527 X509_STORE *verify_store;
528
529 /* Raw values of the cipher list from a client */
530 unsigned char *ciphers_raw;
531 size_t ciphers_rawlen;
Adam Langley95c29f32014-06-20 12:00:00 -0700532 } CERT;
533
534
535typedef struct sess_cert_st
536 {
537 STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
538
539 /* The 'peer_...' members are used only by clients. */
540 int peer_cert_type;
541
542 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
543 CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
544 /* Obviously we don't have the private keys of these,
545 * so maybe we shouldn't even use the CERT_PKEY type here. */
546
Adam Langley95c29f32014-06-20 12:00:00 -0700547 RSA *peer_rsa_tmp; /* not used for SSL 2 */
Adam Langley95c29f32014-06-20 12:00:00 -0700548#ifndef OPENSSL_NO_DH
549 DH *peer_dh_tmp; /* not used for SSL 2 */
550#endif
551#ifndef OPENSSL_NO_ECDH
552 EC_KEY *peer_ecdh_tmp;
553#endif
Adam Langley95c29f32014-06-20 12:00:00 -0700554 } SESS_CERT;
555/* Structure containing decoded values of signature algorithms extension */
556struct tls_sigalgs_st
557 {
558 /* NID of hash algorithm */
559 int hash_nid;
560 /* NID of signature algorithm */
561 int sign_nid;
562 /* Combined hash and signature NID */
563 int signandhash_nid;
564 /* Raw values used in extension */
565 unsigned char rsign;
566 unsigned char rhash;
567 };
568
569/*#define MAC_DEBUG */
570
571/*#define ERR_DEBUG */
572/*#define ABORT_DEBUG */
573/*#define PKT_DEBUG 1 */
574/*#define DES_DEBUG */
575/*#define DES_OFB_DEBUG */
576/*#define SSL_DEBUG */
577/*#define RSA_DEBUG */
578/*#define IDEA_DEBUG */
579
580#define FP_ICC (int (*)(const void *,const void *))
Adam Langley95c29f32014-06-20 12:00:00 -0700581
582/* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
583 * It is a bit of a mess of functions, but hell, think of it as
584 * an opaque structure :-) */
585typedef struct ssl3_enc_method
586 {
587 int (*enc)(SSL *, int);
588 int (*mac)(SSL *, unsigned char *, int);
589 int (*setup_key_block)(SSL *);
590 int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
591 int (*change_cipher_state)(SSL *, int);
592 int (*final_finish_mac)(SSL *, const char *, int, unsigned char *);
593 int finish_mac_length;
594 int (*cert_verify_mac)(SSL *, int, unsigned char *);
595 const char *client_finished_label;
596 int client_finished_label_len;
597 const char *server_finished_label;
598 int server_finished_label_len;
599 int (*alert_value)(int);
600 int (*export_keying_material)(SSL *, unsigned char *, size_t,
601 const char *, size_t,
602 const unsigned char *, size_t,
603 int use_context);
604 /* Various flags indicating protocol version requirements */
605 unsigned int enc_flags;
606 /* Handshake header length */
607 unsigned int hhlen;
608 /* Set the handshake header */
609 void (*set_handshake_header)(SSL *s, int type, unsigned long len);
610 /* Write out handshake message */
611 int (*do_write)(SSL *s);
612 } SSL3_ENC_METHOD;
613
614#define SSL_HM_HEADER_LENGTH(s) s->method->ssl3_enc->hhlen
615#define ssl_handshake_start(s) \
616 (((unsigned char *)s->init_buf->data) + s->method->ssl3_enc->hhlen)
617#define ssl_set_handshake_header(s, htype, len) \
618 s->method->ssl3_enc->set_handshake_header(s, htype, len)
619#define ssl_do_write(s) s->method->ssl3_enc->do_write(s)
620
621/* Values for enc_flags */
622
623/* Uses explicit IV for CBC mode */
624#define SSL_ENC_FLAG_EXPLICIT_IV 0x1
625/* Uses signature algorithms extension */
626#define SSL_ENC_FLAG_SIGALGS 0x2
627/* Uses SHA256 default PRF */
628#define SSL_ENC_FLAG_SHA256_PRF 0x4
629/* Is DTLS */
630#define SSL_ENC_FLAG_DTLS 0x8
631/* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2:
632 * may apply to others in future.
633 */
634#define SSL_ENC_FLAG_TLS1_2_CIPHERS 0x10
635
Adam Langleyc9fb3752014-06-20 12:00:00 -0700636/* ssl_aead_ctx_st contains information about an AEAD that is being used to
637 * encrypt an SSL connection. */
638struct ssl_aead_ctx_st
639 {
640 EVP_AEAD_CTX ctx;
641 /* fixed_nonce contains any bytes of the nonce that are fixed for all
642 * records. */
643 unsigned char fixed_nonce[8];
644 unsigned char fixed_nonce_len, variable_nonce_len, tag_len;
Adam Langleyde0b2022014-06-20 12:00:00 -0700645 /* variable_nonce_included_in_record is non-zero if the variable nonce
646 * for a record is included as a prefix before the ciphertext. */
647 char variable_nonce_included_in_record;
Adam Langleyc9fb3752014-06-20 12:00:00 -0700648 };
649
Adam Langley95c29f32014-06-20 12:00:00 -0700650
651extern SSL3_ENC_METHOD ssl3_undef_enc_method;
David Benjamin6f260012014-08-15 13:49:12 -0400652extern const SSL_CIPHER ssl3_ciphers[];
Adam Langley95c29f32014-06-20 12:00:00 -0700653
654
655SSL_METHOD *ssl_bad_method(int ver);
656
657extern SSL3_ENC_METHOD TLSv1_enc_data;
658extern SSL3_ENC_METHOD TLSv1_1_enc_data;
659extern SSL3_ENC_METHOD TLSv1_2_enc_data;
660extern SSL3_ENC_METHOD SSLv3_enc_data;
661extern SSL3_ENC_METHOD DTLSv1_enc_data;
662extern SSL3_ENC_METHOD DTLSv1_2_enc_data;
663
664#define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
665 s_get_meth, enc_data) \
666const SSL_METHOD *func_name(void) \
667 { \
668 static const SSL_METHOD func_name##_data= { \
669 version, \
David Benjamin1b965262014-08-13 20:06:29 -0400670 ssl3_new, \
671 ssl3_clear, \
672 ssl3_free, \
Adam Langley95c29f32014-06-20 12:00:00 -0700673 s_accept, \
674 s_connect, \
675 ssl3_read, \
676 ssl3_peek, \
677 ssl3_write, \
678 ssl3_shutdown, \
679 ssl3_renegotiate, \
680 ssl3_renegotiate_check, \
681 ssl3_get_message, \
682 ssl3_read_bytes, \
683 ssl3_write_bytes, \
684 ssl3_dispatch_alert, \
685 ssl3_ctrl, \
686 ssl3_ctx_ctrl, \
Adam Langley95c29f32014-06-20 12:00:00 -0700687 ssl3_pending, \
688 ssl3_num_ciphers, \
689 ssl3_get_cipher, \
690 s_get_meth, \
Adam Langley95c29f32014-06-20 12:00:00 -0700691 &enc_data, \
692 ssl_undefined_void_function, \
693 ssl3_callback_ctrl, \
694 ssl3_ctx_callback_ctrl, \
695 }; \
696 return &func_name##_data; \
697 }
698
699#define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
700const SSL_METHOD *func_name(void) \
701 { \
702 static const SSL_METHOD func_name##_data= { \
703 SSL3_VERSION, \
704 ssl3_new, \
705 ssl3_clear, \
706 ssl3_free, \
707 s_accept, \
708 s_connect, \
709 ssl3_read, \
710 ssl3_peek, \
711 ssl3_write, \
712 ssl3_shutdown, \
713 ssl3_renegotiate, \
714 ssl3_renegotiate_check, \
715 ssl3_get_message, \
716 ssl3_read_bytes, \
717 ssl3_write_bytes, \
718 ssl3_dispatch_alert, \
719 ssl3_ctrl, \
720 ssl3_ctx_ctrl, \
Adam Langley95c29f32014-06-20 12:00:00 -0700721 ssl3_pending, \
722 ssl3_num_ciphers, \
723 ssl3_get_cipher, \
724 s_get_meth, \
Adam Langley95c29f32014-06-20 12:00:00 -0700725 &SSLv3_enc_data, \
726 ssl_undefined_void_function, \
727 ssl3_callback_ctrl, \
728 ssl3_ctx_callback_ctrl, \
729 }; \
730 return &func_name##_data; \
731 }
732
733#define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
734const SSL_METHOD *func_name(void) \
735 { \
736 static const SSL_METHOD func_name##_data= { \
737 TLS1_2_VERSION, \
David Benjamin1b965262014-08-13 20:06:29 -0400738 ssl3_new, \
739 ssl3_clear, \
740 ssl3_free, \
Adam Langley95c29f32014-06-20 12:00:00 -0700741 s_accept, \
742 s_connect, \
743 ssl23_read, \
744 ssl23_peek, \
745 ssl23_write, \
746 ssl_undefined_function, \
747 ssl_undefined_function, \
748 ssl_ok, \
749 ssl3_get_message, \
750 ssl3_read_bytes, \
751 ssl3_write_bytes, \
752 ssl3_dispatch_alert, \
753 ssl3_ctrl, \
754 ssl3_ctx_ctrl, \
Adam Langley95c29f32014-06-20 12:00:00 -0700755 ssl_undefined_const_function, \
David Benjamin0e498f12014-07-20 13:36:15 -0400756 ssl3_num_ciphers, \
757 ssl3_get_cipher, \
Adam Langley95c29f32014-06-20 12:00:00 -0700758 s_get_meth, \
Adam Langley95c29f32014-06-20 12:00:00 -0700759 &TLSv1_2_enc_data, \
760 ssl_undefined_void_function, \
761 ssl3_callback_ctrl, \
762 ssl3_ctx_callback_ctrl, \
763 }; \
764 return &func_name##_data; \
765 }
766
Adam Langley95c29f32014-06-20 12:00:00 -0700767#define IMPLEMENT_dtls1_meth_func(version, func_name, s_accept, s_connect, \
768 s_get_meth, enc_data) \
769const SSL_METHOD *func_name(void) \
770 { \
771 static const SSL_METHOD func_name##_data= { \
772 version, \
773 dtls1_new, \
774 dtls1_clear, \
775 dtls1_free, \
776 s_accept, \
777 s_connect, \
778 ssl3_read, \
779 ssl3_peek, \
780 ssl3_write, \
781 dtls1_shutdown, \
782 ssl3_renegotiate, \
783 ssl3_renegotiate_check, \
784 dtls1_get_message, \
785 dtls1_read_bytes, \
786 dtls1_write_app_data_bytes, \
787 dtls1_dispatch_alert, \
788 dtls1_ctrl, \
789 ssl3_ctx_ctrl, \
Adam Langley95c29f32014-06-20 12:00:00 -0700790 ssl3_pending, \
791 ssl3_num_ciphers, \
792 dtls1_get_cipher, \
793 s_get_meth, \
Adam Langley95c29f32014-06-20 12:00:00 -0700794 &enc_data, \
795 ssl_undefined_void_function, \
796 ssl3_callback_ctrl, \
797 ssl3_ctx_callback_ctrl, \
798 }; \
799 return &func_name##_data; \
800 }
801
802void ssl_clear_cipher_ctx(SSL *s);
803int ssl_clear_bad_session(SSL *s);
804CERT *ssl_cert_new(void);
805CERT *ssl_cert_dup(CERT *cert);
806void ssl_cert_set_default_md(CERT *cert);
807int ssl_cert_inst(CERT **o);
808void ssl_cert_clear_certs(CERT *c);
809void ssl_cert_free(CERT *c);
810SESS_CERT *ssl_sess_cert_new(void);
811void ssl_sess_cert_free(SESS_CERT *sc);
812int ssl_set_peer_cert_type(SESS_CERT *c, int type);
Adam Langleydc9b1412014-06-20 12:00:00 -0700813int ssl_get_prev_session(SSL *s, const struct ssl_early_callback_ctx *ctx);
Adam Langley95c29f32014-06-20 12:00:00 -0700814int ssl_cipher_id_cmp(const void *in_a, const void *in_b);
815int ssl_cipher_ptr_id_cmp(const SSL_CIPHER **ap, const SSL_CIPHER **bp);
David Benjamin39482a12014-07-20 13:30:15 -0400816STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const CBS *cbs,
Adam Langley95c29f32014-06-20 12:00:00 -0700817 STACK_OF(SSL_CIPHER) **skp);
David Benjamin39482a12014-07-20 13:30:15 -0400818int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, unsigned char *p);
Adam Langley95c29f32014-06-20 12:00:00 -0700819STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
Adam Langley858a88d2014-06-20 12:00:00 -0700820 struct ssl_cipher_preference_list_st **pref,
Adam Langley95c29f32014-06-20 12:00:00 -0700821 STACK_OF(SSL_CIPHER) **sorted,
822 const char *rule_str, CERT *c);
Adam Langley858a88d2014-06-20 12:00:00 -0700823struct ssl_cipher_preference_list_st* ssl_cipher_preference_list_dup(
824 struct ssl_cipher_preference_list_st *cipher_list);
825void ssl_cipher_preference_list_free(
826 struct ssl_cipher_preference_list_st *cipher_list);
827struct ssl_cipher_preference_list_st* ssl_cipher_preference_list_from_ciphers(
828 STACK_OF(SSL_CIPHER) *ciphers);
829struct ssl_cipher_preference_list_st* ssl_get_cipher_preferences(SSL *s);
Adam Langleyc9fb3752014-06-20 12:00:00 -0700830int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead);
Adam Langley95c29f32014-06-20 12:00:00 -0700831int ssl_cipher_get_evp(const SSL_SESSION *s,const EVP_CIPHER **enc,
Adam Langleyc9fb3752014-06-20 12:00:00 -0700832 const EVP_MD **md,int *mac_pkey_type,int *mac_secret_size);
Adam Langley9447dff2014-06-24 17:29:06 -0700833int ssl_cipher_get_mac(const SSL_SESSION *s, const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size);
Adam Langley95c29f32014-06-20 12:00:00 -0700834int ssl_get_handshake_digest(int i,long *mask,const EVP_MD **md);
835int ssl_cipher_get_cert_index(const SSL_CIPHER *c);
David Benjamine8f3d662014-07-12 01:10:19 -0400836int ssl_cipher_has_server_public_key(const SSL_CIPHER *cipher);
David Benjamin9c651c92014-07-12 13:27:45 -0400837int ssl_cipher_requires_server_key_exchange(const SSL_CIPHER *cipher);
David Benjamine8f3d662014-07-12 01:10:19 -0400838
Adam Langley95c29f32014-06-20 12:00:00 -0700839int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain);
840int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain);
841int ssl_cert_add0_chain_cert(CERT *c, X509 *x);
842int ssl_cert_add1_chain_cert(CERT *c, X509 *x);
843int ssl_cert_select_current(CERT *c, X509 *x);
844void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg);
845
846int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
847int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
848int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags);
849int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref);
850int ssl_undefined_function(SSL *s);
851int ssl_undefined_void_function(void);
852int ssl_undefined_const_function(const SSL *s);
853CERT_PKEY *ssl_get_server_send_pkey(const SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700854EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *c, const EVP_MD **pmd);
855int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
856void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
857STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
858int ssl_verify_alarm_type(long type);
859void ssl_load_ciphers(void);
860int ssl_fill_hello_random(SSL *s, int server, unsigned char *field, int len);
861
David Benjamin39482a12014-07-20 13:30:15 -0400862const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value);
863uint16_t ssl3_get_cipher_value(const SSL_CIPHER *c);
Adam Langley95c29f32014-06-20 12:00:00 -0700864void ssl3_init_finished_mac(SSL *s);
865int ssl3_send_server_certificate(SSL *s);
David Benjamin8da99062014-08-24 12:03:09 -0400866int ssl3_send_new_session_ticket(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700867int ssl3_send_cert_status(SSL *s);
868int ssl3_get_finished(SSL *s,int state_a,int state_b);
869int ssl3_setup_key_block(SSL *s);
870int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
871int ssl3_change_cipher_state(SSL *s,int which);
872void ssl3_cleanup_key_block(SSL *s);
873int ssl3_do_write(SSL *s,int type);
874int ssl3_send_alert(SSL *s,int level, int desc);
875int ssl3_generate_master_secret(SSL *s, unsigned char *out,
876 unsigned char *p, int len);
877int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
878long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
879int ssl3_send_finished(SSL *s, int a, int b, const char *sender,int slen);
880int ssl3_num_ciphers(void);
881const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
882int ssl3_renegotiate(SSL *ssl);
883int ssl3_renegotiate_check(SSL *ssl);
884int ssl3_dispatch_alert(SSL *s);
David Benjamin86271ee2014-07-21 16:14:03 -0400885int ssl3_expect_change_cipher_spec(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700886int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
887int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
888int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,unsigned char *p);
889int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
890void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
891int ssl3_enc(SSL *s, int send_data);
892int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
893void ssl3_free_digest_list(SSL *s);
894unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
David Benjamin6f260012014-08-15 13:49:12 -0400895const SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *clnt,
Adam Langley858a88d2014-06-20 12:00:00 -0700896 struct ssl_cipher_preference_list_st *srvr);
Adam Langley95c29f32014-06-20 12:00:00 -0700897int ssl3_setup_buffers(SSL *s);
898int ssl3_setup_read_buffer(SSL *s);
899int ssl3_setup_write_buffer(SSL *s);
900int ssl3_release_read_buffer(SSL *s);
901int ssl3_release_write_buffer(SSL *s);
902int ssl3_digest_cached_records(SSL *s);
903int ssl3_new(SSL *s);
904void ssl3_free(SSL *s);
905int ssl3_accept(SSL *s);
906int ssl3_connect(SSL *s);
907int ssl3_read(SSL *s, void *buf, int len);
908int ssl3_peek(SSL *s, void *buf, int len);
909int ssl3_write(SSL *s, const void *buf, int len);
910int ssl3_shutdown(SSL *s);
911void ssl3_clear(SSL *s);
912long ssl3_ctrl(SSL *s,int cmd, long larg, void *parg);
913long ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
914long ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
915long ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
916int ssl3_pending(const SSL *s);
917
918void ssl3_record_sequence_update(unsigned char *seq);
919int ssl3_do_change_cipher_spec(SSL *ssl);
Adam Langley95c29f32014-06-20 12:00:00 -0700920
921void ssl3_set_handshake_header(SSL *s, int htype, unsigned long len);
922int ssl3_handshake_write(SSL *s);
923
Adam Langley95c29f32014-06-20 12:00:00 -0700924int ssl23_read(SSL *s, void *buf, int len);
925int ssl23_peek(SSL *s, void *buf, int len);
926int ssl23_write(SSL *s, const void *buf, int len);
Adam Langley95c29f32014-06-20 12:00:00 -0700927
Adam Langley95c29f32014-06-20 12:00:00 -0700928int dtls1_do_write(SSL *s,int type);
929int ssl3_read_n(SSL *s, int n, int max, int extend);
930int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
Adam Langley95c29f32014-06-20 12:00:00 -0700931int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
932 unsigned int len);
933unsigned char *dtls1_set_message_header(SSL *s,
934 unsigned char *p, unsigned char mt, unsigned long len,
935 unsigned long frag_off, unsigned long frag_len);
936
937int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
938int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
939
940int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
941int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
942unsigned long dtls1_output_cert_chain(SSL *s, CERT_PKEY *cpk);
943int dtls1_read_failed(SSL *s, int code);
944int dtls1_buffer_message(SSL *s, int ccs);
945int dtls1_retransmit_message(SSL *s, unsigned short seq,
946 unsigned long frag_off, int *found);
947int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
948int dtls1_retransmit_buffered_messages(SSL *s);
949void dtls1_clear_record_buffer(SSL *s);
950void dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr);
951void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
952void dtls1_reset_seq_numbers(SSL *s, int rw);
Adam Langley95c29f32014-06-20 12:00:00 -0700953int dtls1_check_timeout_num(SSL *s);
954int dtls1_handle_timeout(SSL *s);
955const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
956void dtls1_start_timer(SSL *s);
957void dtls1_stop_timer(SSL *s);
958int dtls1_is_timer_expired(SSL *s);
959void dtls1_double_timeout(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700960unsigned int dtls1_min_mtu(void);
961
962/* some client-only functions */
David Benjamin8da99062014-08-24 12:03:09 -0400963int ssl3_send_client_hello(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700964int ssl3_get_server_hello(SSL *s);
965int ssl3_get_certificate_request(SSL *s);
966int ssl3_get_new_session_ticket(SSL *s);
967int ssl3_get_cert_status(SSL *s);
968int ssl3_get_server_done(SSL *s);
David Benjamin8da99062014-08-24 12:03:09 -0400969int ssl3_send_cert_verify(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700970int ssl3_send_client_certificate(SSL *s);
971int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
972int ssl3_send_client_key_exchange(SSL *s);
David Benjamin8f8040d2014-07-14 19:14:46 -0400973int ssl3_get_server_key_exchange(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700974int ssl3_get_server_certificate(SSL *s);
975int ssl3_check_cert_and_algorithm(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700976# ifndef OPENSSL_NO_NEXTPROTONEG
977int ssl3_send_next_proto(SSL *s);
Adam Langley1258b6a2014-06-20 12:00:00 -0700978int ssl3_send_channel_id(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700979# endif
Adam Langley95c29f32014-06-20 12:00:00 -0700980
981int dtls1_client_hello(SSL *s);
982
983/* some server-only functions */
984int ssl3_get_client_hello(SSL *s);
985int ssl3_send_server_hello(SSL *s);
986int ssl3_send_hello_request(SSL *s);
987int ssl3_send_server_key_exchange(SSL *s);
988int ssl3_send_certificate_request(SSL *s);
989int ssl3_send_server_done(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700990int ssl3_get_client_certificate(SSL *s);
991int ssl3_get_client_key_exchange(SSL *s);
992int ssl3_get_cert_verify(SSL *s);
993#ifndef OPENSSL_NO_NEXTPROTONEG
994int ssl3_get_next_proto(SSL *s);
Adam Langley1258b6a2014-06-20 12:00:00 -0700995int ssl3_get_channel_id(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -0700996#endif
997
998int ssl23_accept(SSL *s);
999int ssl23_connect(SSL *s);
1000int ssl23_read_bytes(SSL *s, int n);
1001int ssl23_write_bytes(SSL *s);
1002
Adam Langley95c29f32014-06-20 12:00:00 -07001003int dtls1_new(SSL *s);
1004int dtls1_accept(SSL *s);
1005int dtls1_connect(SSL *s);
1006void dtls1_free(SSL *s);
1007void dtls1_clear(SSL *s);
1008long dtls1_ctrl(SSL *s,int cmd, long larg, void *parg);
1009int dtls1_shutdown(SSL *s);
1010
1011long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1012int dtls1_get_record(SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -07001013int dtls1_dispatch_alert(SSL *s);
1014int dtls1_enc(SSL *s, int snd);
1015
1016int ssl_init_wbio_buffer(SSL *s, int push);
1017void ssl_free_wbio_buffer(SSL *s);
1018
1019int tls1_change_cipher_state(SSL *s, int which);
1020int tls1_setup_key_block(SSL *s);
1021int tls1_enc(SSL *s, int snd);
Adam Langley1258b6a2014-06-20 12:00:00 -07001022int tls1_handshake_digest(SSL *s, unsigned char *out, size_t out_len);
Adam Langley95c29f32014-06-20 12:00:00 -07001023int tls1_final_finish_mac(SSL *s,
1024 const char *str, int slen, unsigned char *p);
1025int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1026int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1027int tls1_generate_master_secret(SSL *s, unsigned char *out,
1028 unsigned char *p, int len);
1029int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1030 const char *label, size_t llen,
1031 const unsigned char *p, size_t plen, int use_context);
1032int tls1_alert_code(int code);
1033int ssl3_alert_code(int code);
1034int ssl_ok(SSL *s);
1035
1036#ifndef OPENSSL_NO_ECDH
1037int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1038#endif
1039
Adam Langleydc9b1412014-06-20 12:00:00 -07001040char ssl_early_callback_init(struct ssl_early_callback_ctx *ctx);
Adam Langley95c29f32014-06-20 12:00:00 -07001041#ifndef OPENSSL_NO_EC
David Benjamin072334d2014-07-13 16:24:27 -04001042int tls1_ec_curve_id2nid(uint16_t curve_id);
1043uint16_t tls1_ec_nid2curve_id(int nid);
1044
1045/* tls1_check_curve parses ECParameters out of |cbs|, modifying it. It
1046 * checks the curve is one of our preferences and writes the
1047 * NamedCurve value to |*out_curve_id|. It returns one on success and
1048 * zero on error. */
David Benjamined439582014-07-14 19:13:02 -04001049int tls1_check_curve(SSL *s, CBS *cbs, uint16_t *out_curve_id);
David Benjamin072334d2014-07-13 16:24:27 -04001050
1051/* tls1_get_shared_curve returns the NID of the first preferred shared curve
1052 * between client and server preferences. If none can be found, it returns
1053 * NID_undef. */
1054int tls1_get_shared_curve(SSL *s);
1055
1056/* tls1_set_curves converts the array of |ncurves| NIDs pointed to by |curves|
1057 * into a newly allocated array of TLS curve IDs. On success, the function
1058 * returns one and writes the array to |*out_curve_ids| and its size to
1059 * |*out_curve_ids_len|. Otherwise, it returns zero. */
1060int tls1_set_curves(uint16_t **out_curve_ids, size_t *out_curve_ids_len,
1061 const int *curves, size_t ncurves);
1062
Adam Langley95c29f32014-06-20 12:00:00 -07001063int tls1_check_ec_tmp_key(SSL *s, unsigned long id);
1064#endif /* OPENSSL_NO_EC */
1065
Adam Langley95c29f32014-06-20 12:00:00 -07001066int tls1_shared_list(SSL *s,
1067 const unsigned char *l1, size_t l1len,
1068 const unsigned char *l2, size_t l2len,
1069 int nmatch);
Adam Langleyb0c235e2014-06-20 12:00:00 -07001070unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *buf, unsigned char *limit, size_t header_len);
1071unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *buf, unsigned char *limit);
David Benjamindc72ff72014-06-25 12:36:10 -04001072int ssl_parse_clienthello_tlsext(SSL *s, CBS *cbs);
Adam Langley95c29f32014-06-20 12:00:00 -07001073int ssl_check_clienthello_tlsext_late(SSL *s);
David Benjamin03973092014-06-24 23:27:17 -04001074int ssl_parse_serverhello_tlsext(SSL *s, CBS *cbs);
Adam Langley95c29f32014-06-20 12:00:00 -07001075int ssl_prepare_clienthello_tlsext(SSL *s);
1076int ssl_prepare_serverhello_tlsext(SSL *s);
1077
Adam Langley95c29f32014-06-20 12:00:00 -07001078#define tlsext_tick_md EVP_sha256
Adam Langleydc9b1412014-06-20 12:00:00 -07001079int tls1_process_ticket(SSL *s, const struct ssl_early_callback_ctx *ctx,
1080 SSL_SESSION **ret);
Adam Langley95c29f32014-06-20 12:00:00 -07001081
1082int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1083 const EVP_MD *md);
1084int tls12_get_sigid(const EVP_PKEY *pk);
1085const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1086
Adam Langley1258b6a2014-06-20 12:00:00 -07001087int tls1_channel_id_hash(EVP_MD_CTX *ctx, SSL *s);
1088int tls1_record_handshake_hashes_for_channel_id(SSL *s);
1089
Adam Langley95c29f32014-06-20 12:00:00 -07001090int tls1_set_sigalgs_list(CERT *c, const char *str, int client);
1091int tls1_set_sigalgs(CERT *c, const int *salg, size_t salglen, int client);
1092int tls1_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain,
1093 int idx);
1094void tls1_set_cert_validity(SSL *s);
1095
Adam Langleyadb739e2014-06-20 12:00:00 -07001096
1097int ssl3_can_cutthrough(const SSL *s);
Adam Langley29707792014-06-20 12:00:00 -07001098int ssl_get_max_version(const SSL *s);
Adam Langley95c29f32014-06-20 12:00:00 -07001099EVP_MD_CTX* ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) ;
1100void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1101int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1102 int maxlen);
David Benjamin03973092014-06-24 23:27:17 -04001103int ssl_parse_serverhello_renegotiate_ext(SSL *s, CBS *cbs, int *out_alert);
Adam Langley95c29f32014-06-20 12:00:00 -07001104int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1105 int maxlen);
David Benjamindc72ff72014-06-25 12:36:10 -04001106int ssl_parse_clienthello_renegotiate_ext(SSL *s, CBS *cbs, int *out_alert);
Adam Langley95c29f32014-06-20 12:00:00 -07001107long ssl_get_algorithm2(SSL *s);
David Benjamincd996942014-07-20 16:23:51 -04001108int tls1_process_sigalgs(SSL *s, const CBS *sigalgs);
Adam Langley95c29f32014-06-20 12:00:00 -07001109size_t tls12_get_psigalgs(SSL *s, const unsigned char **psigs);
David Benjamin05da6e12014-07-12 20:42:55 -04001110int tls12_check_peer_sigalg(const EVP_MD **out_md, int *out_alert, SSL *s,
1111 CBS *cbs, EVP_PKEY *pkey);
Adam Langley95c29f32014-06-20 12:00:00 -07001112void ssl_set_client_disabled(SSL *s);
1113
1114int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
David Benjamindc72ff72014-06-25 12:36:10 -04001115int ssl_parse_clienthello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert);
Adam Langley95c29f32014-06-20 12:00:00 -07001116int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
David Benjamin03973092014-06-24 23:27:17 -04001117int ssl_parse_serverhello_use_srtp_ext(SSL *s, CBS *cbs, int *out_alert);
Adam Langley95c29f32014-06-20 12:00:00 -07001118
1119/* s3_cbc.c */
1120void ssl3_cbc_copy_mac(unsigned char* out,
1121 const SSL3_RECORD *rec,
1122 unsigned md_size,unsigned orig_len);
1123int ssl3_cbc_remove_padding(const SSL* s,
1124 SSL3_RECORD *rec,
1125 unsigned block_size,
1126 unsigned mac_size);
1127int tls1_cbc_remove_padding(const SSL* s,
1128 SSL3_RECORD *rec,
1129 unsigned block_size,
1130 unsigned mac_size);
1131char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
1132void ssl3_cbc_digest_record(
1133 const EVP_MD_CTX *ctx,
1134 unsigned char* md_out,
1135 size_t* md_out_size,
1136 const unsigned char header[13],
1137 const unsigned char *data,
1138 size_t data_plus_mac_size,
1139 size_t data_plus_mac_plus_padding_size,
1140 const unsigned char *mac_secret,
1141 unsigned mac_secret_length,
1142 char is_sslv3);
1143
Adam Langley95c29f32014-06-20 12:00:00 -07001144#endif