1 /* ssl/ssl2.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 #ifndef HEADER_SSL2_H
60 #define HEADER_SSL2_H
61
62 #ifdef __cplusplus
63 extern "C" {
64 #endif
65
66 /* Protocol Version Codes */
67 #define SSL2_VERSION 0x0002
68 #define SSL2_VERSION_MAJOR 0x00
69 #define SSL2_VERSION_MINOR 0x02
70 /* #define SSL2_CLIENT_VERSION 0x0002 */
71 /* #define SSL2_SERVER_VERSION 0x0002 */
72
73 /* Protocol Message Codes */
74 #define SSL2_MT_ERROR 0
75 #define SSL2_MT_CLIENT_HELLO 1
76 #define SSL2_MT_CLIENT_MASTER_KEY 2
77 #define SSL2_MT_CLIENT_FINISHED 3
78 #define SSL2_MT_SERVER_HELLO 4
79 #define SSL2_MT_SERVER_VERIFY 5
80 #define SSL2_MT_SERVER_FINISHED 6
81 #define SSL2_MT_REQUEST_CERTIFICATE 7
82 #define SSL2_MT_CLIENT_CERTIFICATE 8
83
84 /* Error Message Codes */
85 #define SSL2_PE_UNDEFINED_ERROR 0x0000
86 #define SSL2_PE_NO_CIPHER 0x0001
87 #define SSL2_PE_NO_CERTIFICATE 0x0002
88 #define SSL2_PE_BAD_CERTIFICATE 0x0004
89 #define SSL2_PE_UNSUPPORTED_CERTIFICATE_TYPE 0x0006
90
91 /* Cipher Kind Values */
92 #define SSL2_CK_NULL_WITH_MD5 0x02000000 /* v3 */
93 #define SSL2_CK_RC4_128_WITH_MD5 0x02010080
94 #define SSL2_CK_RC4_128_EXPORT40_WITH_MD5 0x02020080
95 #define SSL2_CK_RC2_128_CBC_WITH_MD5 0x02030080
96 #define SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5 0x02040080
97 #define SSL2_CK_IDEA_128_CBC_WITH_MD5 0x02050080
98 #define SSL2_CK_DES_64_CBC_WITH_MD5 0x02060040
99 #define SSL2_CK_DES_64_CBC_WITH_SHA 0x02060140 /* v3 */
100 #define SSL2_CK_DES_192_EDE3_CBC_WITH_MD5 0x020700c0
101 #define SSL2_CK_DES_192_EDE3_CBC_WITH_SHA 0x020701c0 /* v3 */
102 #define SSL2_CK_RC4_64_WITH_MD5 0x02080080 /* MS hack */
103
104 #define SSL2_CK_DES_64_CFB64_WITH_MD5_1 0x02ff0800 /* SSLeay */
105 #define SSL2_CK_NULL 0x02ff0810 /* SSLeay */
106
107 #define SSL2_TXT_DES_64_CFB64_WITH_MD5_1 "DES-CFB-M1"
108 #define SSL2_TXT_NULL_WITH_MD5 "NULL-MD5"
109 #define SSL2_TXT_RC4_128_WITH_MD5 "RC4-MD5"
110 #define SSL2_TXT_RC4_128_EXPORT40_WITH_MD5 "EXP-RC4-MD5"
111 #define SSL2_TXT_RC2_128_CBC_WITH_MD5 "RC2-CBC-MD5"
112 #define SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5 "EXP-RC2-CBC-MD5"
113 #define SSL2_TXT_IDEA_128_CBC_WITH_MD5 "IDEA-CBC-MD5"
114 #define SSL2_TXT_DES_64_CBC_WITH_MD5 "DES-CBC-MD5"
115 #define SSL2_TXT_DES_64_CBC_WITH_SHA "DES-CBC-SHA"
116 #define SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5 "DES-CBC3-MD5"
117 #define SSL2_TXT_DES_192_EDE3_CBC_WITH_SHA "DES-CBC3-SHA"
118 #define SSL2_TXT_RC4_64_WITH_MD5 "RC4-64-MD5"
119
120 #define SSL2_TXT_NULL "NULL"
121
122 /* Flags for the SSL_CIPHER.algorithm2 field */
123 #define SSL2_CF_5_BYTE_ENC 0x01
124 #define SSL2_CF_8_BYTE_ENC 0x02
125
126 /* Certificate Type Codes */
127 #define SSL2_CT_X509_CERTIFICATE 0x01
128
129 /* Authentication Type Code */
130 #define SSL2_AT_MD5_WITH_RSA_ENCRYPTION 0x01
131
132 #define SSL2_MAX_SSL_SESSION_ID_LENGTH 32
133
134 /* Upper/Lower Bounds */
135 #define SSL2_MAX_MASTER_KEY_LENGTH_IN_BITS 256
136 #ifdef OPENSSL_SYS_MPE
137 #define SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER 29998u
138 #else
139 #define SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER 32767u /* 2^15-1 */
140 #endif
141 #define SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER 16383 /* 2^14-1 */
142
143 #define SSL2_CHALLENGE_LENGTH 16
144 /*#define SSL2_CHALLENGE_LENGTH 32 */
145 #define SSL2_MIN_CHALLENGE_LENGTH 16
146 #define SSL2_MAX_CHALLENGE_LENGTH 32
147 #define SSL2_CONNECTION_ID_LENGTH 16
148 #define SSL2_MAX_CONNECTION_ID_LENGTH 16
149 #define SSL2_SSL_SESSION_ID_LENGTH 16
150 #define SSL2_MAX_CERT_CHALLENGE_LENGTH 32
151 #define SSL2_MIN_CERT_CHALLENGE_LENGTH 16
152 #define SSL2_MAX_KEY_MATERIAL_LENGTH 24
153
154 #ifndef HEADER_SSL_LOCL_H
155 #define CERT char
156 #endif
157
158 #ifndef OPENSSL_NO_SSL_INTERN
159
160 typedef struct ssl2_state_st
161 {
162 int three_byte_header;
163 int clear_text; /* clear text */
164 int escape; /* not used in SSLv2 */
165 int ssl2_rollback; /* used if SSLv23 rolled back to SSLv2 */
166
167 /* non-blocking io info, used to make sure the same
168 * args were passwd */
169 unsigned int wnum; /* number of bytes sent so far */
170 int wpend_tot;
171 const unsigned char *wpend_buf;
172
173 int wpend_off; /* offset to data to write */
174 int wpend_len; /* number of bytes passwd to write */
175 int wpend_ret; /* number of bytes to return to caller */
176
177 /* buffer raw data */
178 int rbuf_left;
179 int rbuf_offs;
180 unsigned char *rbuf;
181 unsigned char *wbuf;
182
183 unsigned char *write_ptr;/* used to point to the start due to
184 * 2/3 byte header. */
185
186 unsigned int padding;
187 unsigned int rlength; /* passed to ssl2_enc */
188 int ract_data_length; /* Set when things are encrypted. */
189 unsigned int wlength; /* passed to ssl2_enc */
190 int wact_data_length; /* Set when things are decrypted. */
191 unsigned char *ract_data;
192 unsigned char *wact_data;
193 unsigned char *mac_data;
194
195 unsigned char *read_key;
196 unsigned char *write_key;
197
198 /* Stuff specifically to do with this SSL session */
199 unsigned int challenge_length;
200 unsigned char challenge[SSL2_MAX_CHALLENGE_LENGTH];
201 unsigned int conn_id_length;
202 unsigned char conn_id[SSL2_MAX_CONNECTION_ID_LENGTH];
203 unsigned int key_material_length;
204 unsigned char key_material[SSL2_MAX_KEY_MATERIAL_LENGTH*2];
205
206 unsigned long read_sequence;
207 unsigned long write_sequence;
208
209 struct {
210 unsigned int conn_id_length;
211 unsigned int cert_type;
212 unsigned int cert_length;
213 unsigned int csl;
214 unsigned int clear;
215 unsigned int enc;
216 unsigned char ccl[SSL2_MAX_CERT_CHALLENGE_LENGTH];
217 unsigned int cipher_spec_length;
218 unsigned int session_id_length;
219 unsigned int clen;
220 unsigned int rlen;
221 } tmp;
222 } SSL2_STATE;
223
224 #endif
225
226 /* SSLv2 */
227 /* client */
228 #define SSL2_ST_SEND_CLIENT_HELLO_A (0x10|SSL_ST_CONNECT)
229 #define SSL2_ST_SEND_CLIENT_HELLO_B (0x11|SSL_ST_CONNECT)
230 #define SSL2_ST_GET_SERVER_HELLO_A (0x20|SSL_ST_CONNECT)
231 #define SSL2_ST_GET_SERVER_HELLO_B (0x21|SSL_ST_CONNECT)
232 #define SSL2_ST_SEND_CLIENT_MASTER_KEY_A (0x30|SSL_ST_CONNECT)
233 #define SSL2_ST_SEND_CLIENT_MASTER_KEY_B (0x31|SSL_ST_CONNECT)
234 #define SSL2_ST_SEND_CLIENT_FINISHED_A (0x40|SSL_ST_CONNECT)
235 #define SSL2_ST_SEND_CLIENT_FINISHED_B (0x41|SSL_ST_CONNECT)
236 #define SSL2_ST_SEND_CLIENT_CERTIFICATE_A (0x50|SSL_ST_CONNECT)
237 #define SSL2_ST_SEND_CLIENT_CERTIFICATE_B (0x51|SSL_ST_CONNECT)
238 #define SSL2_ST_SEND_CLIENT_CERTIFICATE_C (0x52|SSL_ST_CONNECT)
239 #define SSL2_ST_SEND_CLIENT_CERTIFICATE_D (0x53|SSL_ST_CONNECT)
240 #define SSL2_ST_GET_SERVER_VERIFY_A (0x60|SSL_ST_CONNECT)
241 #define SSL2_ST_GET_SERVER_VERIFY_B (0x61|SSL_ST_CONNECT)
242 #define SSL2_ST_GET_SERVER_FINISHED_A (0x70|SSL_ST_CONNECT)
243 #define SSL2_ST_GET_SERVER_FINISHED_B (0x71|SSL_ST_CONNECT)
244 #define SSL2_ST_CLIENT_START_ENCRYPTION (0x80|SSL_ST_CONNECT)
245 #define SSL2_ST_X509_GET_CLIENT_CERTIFICATE (0x90|SSL_ST_CONNECT)
246 /* server */
247 #define SSL2_ST_GET_CLIENT_HELLO_A (0x10|SSL_ST_ACCEPT)
248 #define SSL2_ST_GET_CLIENT_HELLO_B (0x11|SSL_ST_ACCEPT)
249 #define SSL2_ST_GET_CLIENT_HELLO_C (0x12|SSL_ST_ACCEPT)
250 #define SSL2_ST_SEND_SERVER_HELLO_A (0x20|SSL_ST_ACCEPT)
251 #define SSL2_ST_SEND_SERVER_HELLO_B (0x21|SSL_ST_ACCEPT)
252 #define SSL2_ST_GET_CLIENT_MASTER_KEY_A (0x30|SSL_ST_ACCEPT)
253 #define SSL2_ST_GET_CLIENT_MASTER_KEY_B (0x31|SSL_ST_ACCEPT)
254 #define SSL2_ST_SEND_SERVER_VERIFY_A (0x40|SSL_ST_ACCEPT)
255 #define SSL2_ST_SEND_SERVER_VERIFY_B (0x41|SSL_ST_ACCEPT)
256 #define SSL2_ST_SEND_SERVER_VERIFY_C (0x42|SSL_ST_ACCEPT)
257 #define SSL2_ST_GET_CLIENT_FINISHED_A (0x50|SSL_ST_ACCEPT)
258 #define SSL2_ST_GET_CLIENT_FINISHED_B (0x51|SSL_ST_ACCEPT)
259 #define SSL2_ST_SEND_SERVER_FINISHED_A (0x60|SSL_ST_ACCEPT)
260 #define SSL2_ST_SEND_SERVER_FINISHED_B (0x61|SSL_ST_ACCEPT)
261 #define SSL2_ST_SEND_REQUEST_CERTIFICATE_A (0x70|SSL_ST_ACCEPT)
262 #define SSL2_ST_SEND_REQUEST_CERTIFICATE_B (0x71|SSL_ST_ACCEPT)
263 #define SSL2_ST_SEND_REQUEST_CERTIFICATE_C (0x72|SSL_ST_ACCEPT)
264 #define SSL2_ST_SEND_REQUEST_CERTIFICATE_D (0x73|SSL_ST_ACCEPT)
265 #define SSL2_ST_SERVER_START_ENCRYPTION (0x80|SSL_ST_ACCEPT)
266 #define SSL2_ST_X509_GET_SERVER_CERTIFICATE (0x90|SSL_ST_ACCEPT)
267
268 #ifdef __cplusplus
269 }
270 #endif
271 #endif