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1 /* ssl/ssl3.h */ | |
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) 1998-2002 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 #ifndef HEADER_SSL3_H | |
118 #define HEADER_SSL3_H | |
119 | |
120 #ifndef OPENSSL_NO_COMP | |
121 #include <openssl/comp.h> | |
122 #endif | |
123 #include <openssl/buffer.h> | |
124 #include <openssl/evp.h> | |
125 #include <openssl/ssl.h> | |
126 | |
127 #ifdef __cplusplus | |
128 extern "C" { | |
129 #endif | |
130 | |
131 /* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */ | |
132 #define SSL3_CK_SCSV 0x030000FF | |
133 | |
134 #define SSL3_CK_RSA_NULL_MD5 0x03000001 | |
135 #define SSL3_CK_RSA_NULL_SHA 0x03000002 | |
136 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003 | |
137 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004 | |
138 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005 | |
139 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006 | |
140 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007 | |
141 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008 | |
142 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009 | |
143 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A | |
144 | |
145 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B | |
146 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C | |
147 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D | |
148 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E | |
149 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F | |
150 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010 | |
151 | |
152 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011 | |
153 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012 | |
154 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013 | |
155 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014 | |
156 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015 | |
157 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016 | |
158 | |
159 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017 | |
160 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018 | |
161 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019 | |
162 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A | |
163 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B | |
164 | |
165 #if 0 | |
166 #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C | |
167 #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D | |
168 #if 0 /* Because it clashes with KRB5, is never used any more, and is sa
fe | |
169 to remove according to David Hopwood <david.hopwood@zetnet.co.u
k> | |
170 of the ietf-tls list */ | |
171 #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E | |
172 #endif | |
173 #endif | |
174 | |
175 /* VRS Additional Kerberos5 entries | |
176 */ | |
177 #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E | |
178 #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F | |
179 #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020 | |
180 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021 | |
181 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022 | |
182 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023 | |
183 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024 | |
184 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025 | |
185 | |
186 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026 | |
187 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027 | |
188 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028 | |
189 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029 | |
190 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A | |
191 #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B | |
192 | |
193 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5" | |
194 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA" | |
195 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5" | |
196 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5" | |
197 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA" | |
198 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5" | |
199 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA" | |
200 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA" | |
201 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA" | |
202 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA" | |
203 | |
204 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA" | |
205 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA" | |
206 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA" | |
207 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA" | |
208 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA" | |
209 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA" | |
210 | |
211 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA" | |
212 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA" | |
213 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA" | |
214 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA" | |
215 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA" | |
216 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA" | |
217 | |
218 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5" | |
219 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5" | |
220 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA" | |
221 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" | |
222 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" | |
223 | |
224 #if 0 | |
225 #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA" | |
226 #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA" | |
227 #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA" | |
228 #endif | |
229 | |
230 #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA" | |
231 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA" | |
232 #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA" | |
233 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA" | |
234 #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5" | |
235 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5" | |
236 #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5" | |
237 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5" | |
238 | |
239 #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA" | |
240 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA" | |
241 #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA" | |
242 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5" | |
243 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5" | |
244 #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5" | |
245 | |
246 #define SSL3_SSL_SESSION_ID_LENGTH 32 | |
247 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32 | |
248 | |
249 #define SSL3_MASTER_SECRET_SIZE 48 | |
250 #define SSL3_RANDOM_SIZE 32 | |
251 #define SSL3_SESSION_ID_SIZE 32 | |
252 #define SSL3_RT_HEADER_LENGTH 5 | |
253 | |
254 #ifndef SSL3_ALIGN_PAYLOAD | |
255 /* Some will argue that this increases memory footprint, but it's | |
256 * not actually true. Point is that malloc has to return at least | |
257 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes | |
258 * 3 bytes in either case. Suggested pre-gaping simply moves these | |
259 * wasted bytes from the end of allocated region to its front, | |
260 * but makes data payload aligned, which improves performance:-) */ | |
261 # define SSL3_ALIGN_PAYLOAD 8 | |
262 #else | |
263 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0 | |
264 # error "insane SSL3_ALIGN_PAYLOAD" | |
265 # undef SSL3_ALIGN_PAYLOAD | |
266 # endif | |
267 #endif | |
268 | |
269 /* This is the maximum MAC (digest) size used by the SSL library. | |
270 * Currently maximum of 20 is used by SHA1, but we reserve for | |
271 * future extension for 512-bit hashes. | |
272 */ | |
273 | |
274 #define SSL3_RT_MAX_MD_SIZE 64 | |
275 | |
276 /* Maximum block size used in all ciphersuites. Currently 16 for AES. | |
277 */ | |
278 | |
279 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 | |
280 | |
281 #define SSL3_RT_MAX_EXTRA (16384) | |
282 | |
283 /* Maximum plaintext length: defined by SSL/TLS standards */ | |
284 #define SSL3_RT_MAX_PLAIN_LENGTH 16384 | |
285 /* Maximum compression overhead: defined by SSL/TLS standards */ | |
286 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 | |
287 | |
288 /* The standards give a maximum encryption overhead of 1024 bytes. | |
289 * In practice the value is lower than this. The overhead is the maximum | |
290 * number of padding bytes (256) plus the mac size. | |
291 */ | |
292 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) | |
293 | |
294 /* OpenSSL currently only uses a padding length of at most one block so | |
295 * the send overhead is smaller. | |
296 */ | |
297 | |
298 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ | |
299 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) | |
300 | |
301 /* If compression isn't used don't include the compression overhead */ | |
302 | |
303 #ifdef OPENSSL_NO_COMP | |
304 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH | |
305 #else | |
306 #define SSL3_RT_MAX_COMPRESSED_LENGTH \ | |
307 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD) | |
308 #endif | |
309 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \ | |
310 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) | |
311 #define SSL3_RT_MAX_PACKET_SIZE \ | |
312 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) | |
313 | |
314 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" | |
315 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" | |
316 | |
317 #define SSL3_VERSION 0x0300 | |
318 #define SSL3_VERSION_MAJOR 0x03 | |
319 #define SSL3_VERSION_MINOR 0x00 | |
320 | |
321 #define SSL3_RT_CHANGE_CIPHER_SPEC 20 | |
322 #define SSL3_RT_ALERT 21 | |
323 #define SSL3_RT_HANDSHAKE 22 | |
324 #define SSL3_RT_APPLICATION_DATA 23 | |
325 #define TLS1_RT_HEARTBEAT 24 | |
326 | |
327 #define SSL3_AL_WARNING 1 | |
328 #define SSL3_AL_FATAL 2 | |
329 | |
330 #define SSL3_AD_CLOSE_NOTIFY 0 | |
331 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ | |
332 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ | |
333 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ | |
334 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ | |
335 #define SSL3_AD_NO_CERTIFICATE 41 | |
336 #define SSL3_AD_BAD_CERTIFICATE 42 | |
337 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 | |
338 #define SSL3_AD_CERTIFICATE_REVOKED 44 | |
339 #define SSL3_AD_CERTIFICATE_EXPIRED 45 | |
340 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 | |
341 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ | |
342 | |
343 #define TLS1_HB_REQUEST 1 | |
344 #define TLS1_HB_RESPONSE 2 | |
345 | |
346 #ifndef OPENSSL_NO_SSL_INTERN | |
347 | |
348 typedef struct ssl3_record_st | |
349 { | |
350 /*r */ int type; /* type of record */ | |
351 /*rw*/ unsigned int length; /* How many bytes available */ | |
352 /*r */ unsigned int off; /* read/write offset into 'buf' */ | |
353 /*rw*/ unsigned char *data; /* pointer to the record data */ | |
354 /*rw*/ unsigned char *input; /* where the decode bytes are */ | |
355 /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */ | |
356 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ | |
357 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ | |
358 } SSL3_RECORD; | |
359 | |
360 typedef struct ssl3_buffer_st | |
361 { | |
362 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, | |
363 * see ssl3_setup_buffers() */ | |
364 size_t len; /* buffer size */ | |
365 int offset; /* where to 'copy from' */ | |
366 int left; /* how many bytes left */ | |
367 } SSL3_BUFFER; | |
368 | |
369 #endif | |
370 | |
371 #define SSL3_CT_RSA_SIGN 1 | |
372 #define SSL3_CT_DSS_SIGN 2 | |
373 #define SSL3_CT_RSA_FIXED_DH 3 | |
374 #define SSL3_CT_DSS_FIXED_DH 4 | |
375 #define SSL3_CT_RSA_EPHEMERAL_DH 5 | |
376 #define SSL3_CT_DSS_EPHEMERAL_DH 6 | |
377 #define SSL3_CT_FORTEZZA_DMS 20 | |
378 /* SSL3_CT_NUMBER is used to size arrays and it must be large | |
379 * enough to contain all of the cert types defined either for | |
380 * SSLv3 and TLSv1. | |
381 */ | |
382 #define SSL3_CT_NUMBER 9 | |
383 | |
384 | |
385 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 | |
386 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 | |
387 #define SSL3_FLAGS_POP_BUFFER 0x0004 | |
388 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 | |
389 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 | |
390 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 | |
391 #define SSL3_FLAGS_CCS_OK 0x0080 | |
392 | |
393 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we | |
394 * restart a handshake because of MS SGC and so prevents us | |
395 * from restarting the handshake in a loop. It's reset on a | |
396 * renegotiation, so effectively limits the client to one restart | |
397 * per negotiation. This limits the possibility of a DDoS | |
398 * attack where the client handshakes in a loop using SGC to | |
399 * restart. Servers which permit renegotiation can still be | |
400 * effected, but we can't prevent that. | |
401 */ | |
402 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 | |
403 | |
404 #ifndef OPENSSL_NO_SSL_INTERN | |
405 | |
406 typedef struct ssl3_state_st | |
407 { | |
408 long flags; | |
409 int delay_buf_pop_ret; | |
410 | |
411 unsigned char read_sequence[8]; | |
412 int read_mac_secret_size; | |
413 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; | |
414 unsigned char write_sequence[8]; | |
415 int write_mac_secret_size; | |
416 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; | |
417 | |
418 unsigned char server_random[SSL3_RANDOM_SIZE]; | |
419 unsigned char client_random[SSL3_RANDOM_SIZE]; | |
420 | |
421 /* flags for countermeasure against known-IV weakness */ | |
422 int need_empty_fragments; | |
423 int empty_fragment_done; | |
424 | |
425 /* The value of 'extra' when the buffers were initialized */ | |
426 int init_extra; | |
427 | |
428 SSL3_BUFFER rbuf; /* read IO goes into here */ | |
429 SSL3_BUFFER wbuf; /* write IO goes into here */ | |
430 | |
431 SSL3_RECORD rrec; /* each decoded record goes in here */ | |
432 SSL3_RECORD wrec; /* goes out from here */ | |
433 | |
434 /* storage for Alert/Handshake protocol data received but not | |
435 * yet processed by ssl3_read_bytes: */ | |
436 unsigned char alert_fragment[2]; | |
437 unsigned int alert_fragment_len; | |
438 unsigned char handshake_fragment[4]; | |
439 unsigned int handshake_fragment_len; | |
440 | |
441 /* partial write - check the numbers match */ | |
442 unsigned int wnum; /* number of bytes sent so far */ | |
443 int wpend_tot; /* number bytes written */ | |
444 int wpend_type; | |
445 int wpend_ret; /* number of bytes submitted */ | |
446 const unsigned char *wpend_buf; | |
447 | |
448 /* used during startup, digest all incoming/outgoing packets */ | |
449 BIO *handshake_buffer; | |
450 /* When set of handshake digests is determined, buffer is hashed | |
451 * and freed and MD_CTX-es for all required digests are stored in | |
452 * this array */ | |
453 EVP_MD_CTX **handshake_dgst; | |
454 /* this is set whenerver we see a change_cipher_spec message | |
455 * come in when we are not looking for one */ | |
456 int change_cipher_spec; | |
457 | |
458 int warn_alert; | |
459 int fatal_alert; | |
460 /* we allow one fatal and one warning alert to be outstanding, | |
461 * send close alert via the warning alert */ | |
462 int alert_dispatch; | |
463 unsigned char send_alert[2]; | |
464 | |
465 /* This flag is set when we should renegotiate ASAP, basically when | |
466 * there is no more data in the read or write buffers */ | |
467 int renegotiate; | |
468 int total_renegotiations; | |
469 int num_renegotiations; | |
470 | |
471 int in_read_app_data; | |
472 | |
473 /* Opaque PRF input as used for the current handshake. | |
474 * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined | |
475 * (otherwise, they are merely present to improve binary compatibility)
*/ | |
476 void *client_opaque_prf_input; | |
477 size_t client_opaque_prf_input_len; | |
478 void *server_opaque_prf_input; | |
479 size_t server_opaque_prf_input_len; | |
480 | |
481 struct { | |
482 /* actually only needs to be 16+20 */ | |
483 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; | |
484 | |
485 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ | |
486 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; | |
487 int finish_md_len; | |
488 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; | |
489 int peer_finish_md_len; | |
490 | |
491 unsigned long message_size; | |
492 int message_type; | |
493 | |
494 /* used to hold the new cipher we are going to use */ | |
495 const SSL_CIPHER *new_cipher; | |
496 #ifndef OPENSSL_NO_DH | |
497 DH *dh; | |
498 #endif | |
499 | |
500 #ifndef OPENSSL_NO_ECDH | |
501 EC_KEY *ecdh; /* holds short lived ECDH key */ | |
502 #endif | |
503 | |
504 /* used when SSL_ST_FLUSH_DATA is entered */ | |
505 int next_state; | |
506 | |
507 int reuse_message; | |
508 | |
509 /* used for certificate requests */ | |
510 int cert_req; | |
511 int ctype_num; | |
512 unsigned char ctype[SSL3_CT_NUMBER]; | |
513 STACK_OF(X509_NAME) *ca_names; | |
514 | |
515 int use_rsa_tmp; | |
516 | |
517 int key_block_length; | |
518 unsigned char *key_block; | |
519 | |
520 const EVP_CIPHER *new_sym_enc; | |
521 const EVP_AEAD *new_aead; | |
522 const EVP_MD *new_hash; | |
523 int new_mac_pkey_type; | |
524 int new_mac_secret_size; | |
525 #ifndef OPENSSL_NO_COMP | |
526 const SSL_COMP *new_compression; | |
527 #else | |
528 char *new_compression; | |
529 #endif | |
530 int cert_request; | |
531 } tmp; | |
532 | |
533 /* Connection binding to prevent renegotiation attacks */ | |
534 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; | |
535 unsigned char previous_client_finished_len; | |
536 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; | |
537 unsigned char previous_server_finished_len; | |
538 int send_connection_binding; /* TODOEKR */ | |
539 | |
540 #ifndef OPENSSL_NO_NEXTPROTONEG | |
541 /* Set if we saw the Next Protocol Negotiation extension from our peer.
*/ | |
542 int next_proto_neg_seen; | |
543 #endif | |
544 | |
545 /* In a client, this means that the server supported Channel ID and that | |
546 * a Channel ID was sent. In a server it means that we echoed support | |
547 * for Channel IDs and that tlsext_channel_id will be valid after the | |
548 * handshake. */ | |
549 char tlsext_channel_id_valid; | |
550 /* For a server: | |
551 * If |tlsext_channel_id_valid| is true, then this contains the | |
552 * verified Channel ID from the client: a P256 point, (x,y), where | |
553 * each are big-endian values. */ | |
554 unsigned char tlsext_channel_id[64]; | |
555 } SSL3_STATE; | |
556 | |
557 #endif | |
558 | |
559 /* SSLv3 */ | |
560 /*client */ | |
561 /* extra state */ | |
562 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) | |
563 #define SSL3_ST_CUTTHROUGH_COMPLETE (0x101|SSL_ST_CONNECT) | |
564 #ifndef OPENSSL_NO_SCTP | |
565 #define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT) | |
566 #define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT) | |
567 #endif | |
568 /* write to server */ | |
569 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) | |
570 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) | |
571 /* read from server */ | |
572 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) | |
573 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) | |
574 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) | |
575 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) | |
576 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) | |
577 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) | |
578 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) | |
579 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) | |
580 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) | |
581 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) | |
582 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) | |
583 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) | |
584 /* write to server */ | |
585 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) | |
586 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) | |
587 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) | |
588 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) | |
589 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) | |
590 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) | |
591 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) | |
592 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) | |
593 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) | |
594 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) | |
595 #ifndef OPENSSL_NO_NEXTPROTONEG | |
596 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) | |
597 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) | |
598 #endif | |
599 #define SSL3_ST_CW_CHANNEL_ID_A (0x210|SSL_ST_CONNECT) | |
600 #define SSL3_ST_CW_CHANNEL_ID_B (0x211|SSL_ST_CONNECT) | |
601 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) | |
602 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) | |
603 /* read from server */ | |
604 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) | |
605 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) | |
606 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) | |
607 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) | |
608 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) | |
609 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) | |
610 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) | |
611 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) | |
612 | |
613 /* server */ | |
614 /* extra state */ | |
615 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) | |
616 #ifndef OPENSSL_NO_SCTP | |
617 #define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT) | |
618 #define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT) | |
619 #endif | |
620 /* read from client */ | |
621 /* Do not change the number values, they do matter */ | |
622 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) | |
623 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) | |
624 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) | |
625 /* write to client */ | |
626 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) | |
627 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) | |
628 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) | |
629 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) | |
630 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) | |
631 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) | |
632 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) | |
633 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) | |
634 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) | |
635 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) | |
636 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) | |
637 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) | |
638 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) | |
639 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) | |
640 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) | |
641 /* read from client */ | |
642 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) | |
643 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) | |
644 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) | |
645 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) | |
646 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) | |
647 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) | |
648 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) | |
649 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) | |
650 #define SSL3_ST_SR_POST_CLIENT_CERT (0x1BF|SSL_ST_ACCEPT) | |
651 #ifndef OPENSSL_NO_NEXTPROTONEG | |
652 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) | |
653 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) | |
654 #endif | |
655 #define SSL3_ST_SR_CHANNEL_ID_A (0x220|SSL_ST_ACCEPT) | |
656 #define SSL3_ST_SR_CHANNEL_ID_B (0x221|SSL_ST_ACCEPT) | |
657 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) | |
658 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) | |
659 /* write to client */ | |
660 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) | |
661 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) | |
662 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) | |
663 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) | |
664 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) | |
665 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) | |
666 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) | |
667 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) | |
668 | |
669 #define SSL3_MT_HELLO_REQUEST 0 | |
670 #define SSL3_MT_CLIENT_HELLO 1 | |
671 #define SSL3_MT_SERVER_HELLO 2 | |
672 #define SSL3_MT_NEWSESSION_TICKET 4 | |
673 #define SSL3_MT_CERTIFICATE 11 | |
674 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 | |
675 #define SSL3_MT_CERTIFICATE_REQUEST 13 | |
676 #define SSL3_MT_SERVER_DONE 14 | |
677 #define SSL3_MT_CERTIFICATE_VERIFY 15 | |
678 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 | |
679 #define SSL3_MT_FINISHED 20 | |
680 #define SSL3_MT_CERTIFICATE_STATUS 22 | |
681 #ifndef OPENSSL_NO_NEXTPROTONEG | |
682 #define SSL3_MT_NEXT_PROTO 67 | |
683 #endif | |
684 #define SSL3_MT_ENCRYPTED_EXTENSIONS 203 | |
685 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 | |
686 | |
687 | |
688 #define SSL3_MT_CCS 1 | |
689 | |
690 /* These are used when changing over to a new cipher */ | |
691 #define SSL3_CC_READ 0x01 | |
692 #define SSL3_CC_WRITE 0x02 | |
693 #define SSL3_CC_CLIENT 0x10 | |
694 #define SSL3_CC_SERVER 0x20 | |
695 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) | |
696 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) | |
697 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) | |
698 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) | |
699 | |
700 #ifdef __cplusplus | |
701 } | |
702 #endif | |
703 #endif | |
704 | |
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