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1 /*
2  * TLSv1 common definitions
3  * Copyright (c) 2006-2014, Jouni Malinen <j@w1.fi>
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8 
9 #ifndef TLSV1_COMMON_H
10 #define TLSV1_COMMON_H
11 
12 #include "crypto/crypto.h"
13 
14 #define TLS_VERSION_1 0x0301 /* TLSv1 */
15 #define TLS_VERSION_1_1 0x0302 /* TLSv1.1 */
16 #define TLS_VERSION_1_2 0x0303 /* TLSv1.2 */
17 #ifdef CONFIG_TLSV12
18 #define TLS_VERSION TLS_VERSION_1_2
19 #else /* CONFIG_TLSV12 */
20 #ifdef CONFIG_TLSV11
21 #define TLS_VERSION TLS_VERSION_1_1
22 #else /* CONFIG_TLSV11 */
23 #define TLS_VERSION TLS_VERSION_1
24 #endif /* CONFIG_TLSV11 */
25 #endif /* CONFIG_TLSV12 */
26 #define TLS_RANDOM_LEN 32
27 #define TLS_PRE_MASTER_SECRET_LEN 48
28 #define TLS_MASTER_SECRET_LEN 48
29 #define TLS_SESSION_ID_MAX_LEN 32
30 #define TLS_VERIFY_DATA_LEN 12
31 
32 /* HandshakeType */
33 enum {
34 	TLS_HANDSHAKE_TYPE_HELLO_REQUEST = 0,
35 	TLS_HANDSHAKE_TYPE_CLIENT_HELLO = 1,
36 	TLS_HANDSHAKE_TYPE_SERVER_HELLO = 2,
37 	TLS_HANDSHAKE_TYPE_NEW_SESSION_TICKET = 4 /* RFC 4507 */,
38 	TLS_HANDSHAKE_TYPE_CERTIFICATE = 11,
39 	TLS_HANDSHAKE_TYPE_SERVER_KEY_EXCHANGE = 12,
40 	TLS_HANDSHAKE_TYPE_CERTIFICATE_REQUEST = 13,
41 	TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE = 14,
42 	TLS_HANDSHAKE_TYPE_CERTIFICATE_VERIFY = 15,
43 	TLS_HANDSHAKE_TYPE_CLIENT_KEY_EXCHANGE = 16,
44 	TLS_HANDSHAKE_TYPE_FINISHED = 20,
45 	TLS_HANDSHAKE_TYPE_CERTIFICATE_URL = 21 /* RFC 4366 */,
46 	TLS_HANDSHAKE_TYPE_CERTIFICATE_STATUS = 22 /* RFC 4366 */
47 };
48 
49 /* CipherSuite */
50 #define TLS_NULL_WITH_NULL_NULL			0x0000 /* RFC 2246 */
51 #define TLS_RSA_WITH_NULL_MD5			0x0001 /* RFC 2246 */
52 #define TLS_RSA_WITH_NULL_SHA			0x0002 /* RFC 2246 */
53 #define TLS_RSA_EXPORT_WITH_RC4_40_MD5		0x0003 /* RFC 2246 */
54 #define TLS_RSA_WITH_RC4_128_MD5		0x0004 /* RFC 2246 */
55 #define TLS_RSA_WITH_RC4_128_SHA		0x0005 /* RFC 2246 */
56 #define TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5	0x0006 /* RFC 2246 */
57 #define TLS_RSA_WITH_IDEA_CBC_SHA		0x0007 /* RFC 2246 */
58 #define TLS_RSA_EXPORT_WITH_DES40_CBC_SHA	0x0008 /* RFC 2246 */
59 #define TLS_RSA_WITH_DES_CBC_SHA		0x0009 /* RFC 2246 */
60 #define TLS_RSA_WITH_3DES_EDE_CBC_SHA		0x000A /* RFC 2246 */
61 #define TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA	0x000B /* RFC 2246 */
62 #define TLS_DH_DSS_WITH_DES_CBC_SHA		0x000C /* RFC 2246 */
63 #define TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA	0x000D /* RFC 2246 */
64 #define TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA	0x000E /* RFC 2246 */
65 #define TLS_DH_RSA_WITH_DES_CBC_SHA		0x000F /* RFC 2246 */
66 #define TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA	0x0010 /* RFC 2246 */
67 #define TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA	0x0011 /* RFC 2246 */
68 #define TLS_DHE_DSS_WITH_DES_CBC_SHA		0x0012 /* RFC 2246 */
69 #define TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA	0x0013 /* RFC 2246 */
70 #define TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA	0x0014 /* RFC 2246 */
71 #define TLS_DHE_RSA_WITH_DES_CBC_SHA		0x0015 /* RFC 2246 */
72 #define TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA	0x0016 /* RFC 2246 */
73 #define TLS_DH_anon_EXPORT_WITH_RC4_40_MD5	0x0017 /* RFC 2246 */
74 #define TLS_DH_anon_WITH_RC4_128_MD5		0x0018 /* RFC 2246 */
75 #define TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA	0x0019 /* RFC 2246 */
76 #define TLS_DH_anon_WITH_DES_CBC_SHA		0x001A /* RFC 2246 */
77 #define TLS_DH_anon_WITH_3DES_EDE_CBC_SHA	0x001B /* RFC 2246 */
78 #define TLS_RSA_WITH_AES_128_CBC_SHA		0x002F /* RFC 3268 */
79 #define TLS_DH_DSS_WITH_AES_128_CBC_SHA		0x0030 /* RFC 3268 */
80 #define TLS_DH_RSA_WITH_AES_128_CBC_SHA		0x0031 /* RFC 3268 */
81 #define TLS_DHE_DSS_WITH_AES_128_CBC_SHA	0x0032 /* RFC 3268 */
82 #define TLS_DHE_RSA_WITH_AES_128_CBC_SHA	0x0033 /* RFC 3268 */
83 #define TLS_DH_anon_WITH_AES_128_CBC_SHA	0x0034 /* RFC 3268 */
84 #define TLS_RSA_WITH_AES_256_CBC_SHA		0x0035 /* RFC 3268 */
85 #define TLS_DH_DSS_WITH_AES_256_CBC_SHA		0x0036 /* RFC 3268 */
86 #define TLS_DH_RSA_WITH_AES_256_CBC_SHA		0x0037 /* RFC 3268 */
87 #define TLS_DHE_DSS_WITH_AES_256_CBC_SHA	0x0038 /* RFC 3268 */
88 #define TLS_DHE_RSA_WITH_AES_256_CBC_SHA	0x0039 /* RFC 3268 */
89 #define TLS_DH_anon_WITH_AES_256_CBC_SHA	0x003A /* RFC 3268 */
90 #define TLS_RSA_WITH_NULL_SHA256		0x003B /* RFC 5246 */
91 #define TLS_RSA_WITH_AES_128_CBC_SHA256		0x003C /* RFC 5246 */
92 #define TLS_RSA_WITH_AES_256_CBC_SHA256		0x003D /* RFC 5246 */
93 #define TLS_DH_DSS_WITH_AES_128_CBC_SHA256	0x003E /* RFC 5246 */
94 #define TLS_DH_RSA_WITH_AES_128_CBC_SHA256	0x003F /* RFC 5246 */
95 #define TLS_DHE_DSS_WITH_AES_128_CBC_SHA256	0x0040 /* RFC 5246 */
96 #define TLS_DHE_RSA_WITH_AES_128_CBC_SHA256	0x0067 /* RFC 5246 */
97 #define TLS_DH_DSS_WITH_AES_256_CBC_SHA256	0x0068 /* RFC 5246 */
98 #define TLS_DH_RSA_WITH_AES_256_CBC_SHA256	0x0069 /* RFC 5246 */
99 #define TLS_DHE_DSS_WITH_AES_256_CBC_SHA256	0x006A /* RFC 5246 */
100 #define TLS_DHE_RSA_WITH_AES_256_CBC_SHA256	0x006B /* RFC 5246 */
101 #define TLS_DH_anon_WITH_AES_128_CBC_SHA256	0x006C /* RFC 5246 */
102 #define TLS_DH_anon_WITH_AES_256_CBC_SHA256	0x006D /* RFC 5246 */
103 
104 /* CompressionMethod */
105 #define TLS_COMPRESSION_NULL 0
106 
107 /* HashAlgorithm */
108 enum {
109 	TLS_HASH_ALG_NONE = 0,
110 	TLS_HASH_ALG_MD5 = 1,
111 	TLS_HASH_ALG_SHA1 = 2,
112 	TLS_HASH_ALG_SHA224 = 3,
113 	TLS_HASH_ALG_SHA256 = 4,
114 	TLS_HASH_ALG_SHA384 = 5,
115 	TLS_HASH_ALG_SHA512 = 6
116 };
117 
118 /* SignatureAlgorithm */
119 enum {
120 	TLS_SIGN_ALG_ANONYMOUS = 0,
121 	TLS_SIGN_ALG_RSA = 1,
122 	TLS_SIGN_ALG_DSA = 2,
123 	TLS_SIGN_ALG_ECDSA = 3,
124 };
125 
126 /* AlertLevel */
127 #define TLS_ALERT_LEVEL_WARNING 1
128 #define TLS_ALERT_LEVEL_FATAL 2
129 
130 /* AlertDescription */
131 #define TLS_ALERT_CLOSE_NOTIFY			0
132 #define TLS_ALERT_UNEXPECTED_MESSAGE		10
133 #define TLS_ALERT_BAD_RECORD_MAC		20
134 #define TLS_ALERT_DECRYPTION_FAILED		21
135 #define TLS_ALERT_RECORD_OVERFLOW		22
136 #define TLS_ALERT_DECOMPRESSION_FAILURE		30
137 #define TLS_ALERT_HANDSHAKE_FAILURE		40
138 #define TLS_ALERT_BAD_CERTIFICATE		42
139 #define TLS_ALERT_UNSUPPORTED_CERTIFICATE	43
140 #define TLS_ALERT_CERTIFICATE_REVOKED		44
141 #define TLS_ALERT_CERTIFICATE_EXPIRED		45
142 #define TLS_ALERT_CERTIFICATE_UNKNOWN		46
143 #define TLS_ALERT_ILLEGAL_PARAMETER		47
144 #define TLS_ALERT_UNKNOWN_CA			48
145 #define TLS_ALERT_ACCESS_DENIED			49
146 #define TLS_ALERT_DECODE_ERROR			50
147 #define TLS_ALERT_DECRYPT_ERROR			51
148 #define TLS_ALERT_EXPORT_RESTRICTION		60
149 #define TLS_ALERT_PROTOCOL_VERSION		70
150 #define TLS_ALERT_INSUFFICIENT_SECURITY		71
151 #define TLS_ALERT_INTERNAL_ERROR		80
152 #define TLS_ALERT_USER_CANCELED			90
153 #define TLS_ALERT_NO_RENEGOTIATION		100
154 #define TLS_ALERT_UNSUPPORTED_EXTENSION		110 /* RFC 4366 */
155 #define TLS_ALERT_CERTIFICATE_UNOBTAINABLE	111 /* RFC 4366 */
156 #define TLS_ALERT_UNRECOGNIZED_NAME		112 /* RFC 4366 */
157 #define TLS_ALERT_BAD_CERTIFICATE_STATUS_RESPONSE	113 /* RFC 4366 */
158 #define TLS_ALERT_BAD_CERTIFICATE_HASH_VALUE	114 /* RFC 4366 */
159 
160 /* ChangeCipherSpec */
161 enum {
162 	TLS_CHANGE_CIPHER_SPEC = 1
163 };
164 
165 /* TLS Extensions */
166 #define TLS_EXT_SERVER_NAME			0 /* RFC 4366 */
167 #define TLS_EXT_MAX_FRAGMENT_LENGTH		1 /* RFC 4366 */
168 #define TLS_EXT_CLIENT_CERTIFICATE_URL		2 /* RFC 4366 */
169 #define TLS_EXT_TRUSTED_CA_KEYS			3 /* RFC 4366 */
170 #define TLS_EXT_TRUNCATED_HMAC			4 /* RFC 4366 */
171 #define TLS_EXT_STATUS_REQUEST			5 /* RFC 4366 */
172 #define TLS_EXT_SESSION_TICKET			35 /* RFC 4507 */
173 
174 #define TLS_EXT_PAC_OPAQUE TLS_EXT_SESSION_TICKET /* EAP-FAST terminology */
175 
176 
177 typedef enum {
178 	TLS_KEY_X_NULL,
179 	TLS_KEY_X_RSA,
180 	TLS_KEY_X_RSA_EXPORT,
181 	TLS_KEY_X_DH_DSS_EXPORT,
182 	TLS_KEY_X_DH_DSS,
183 	TLS_KEY_X_DH_RSA_EXPORT,
184 	TLS_KEY_X_DH_RSA,
185 	TLS_KEY_X_DHE_DSS_EXPORT,
186 	TLS_KEY_X_DHE_DSS,
187 	TLS_KEY_X_DHE_RSA_EXPORT,
188 	TLS_KEY_X_DHE_RSA,
189 	TLS_KEY_X_DH_anon_EXPORT,
190 	TLS_KEY_X_DH_anon
191 } tls_key_exchange;
192 
193 typedef enum {
194 	TLS_CIPHER_NULL,
195 	TLS_CIPHER_RC4_40,
196 	TLS_CIPHER_RC4_128,
197 	TLS_CIPHER_RC2_CBC_40,
198 	TLS_CIPHER_IDEA_CBC,
199 	TLS_CIPHER_DES40_CBC,
200 	TLS_CIPHER_DES_CBC,
201 	TLS_CIPHER_3DES_EDE_CBC,
202 	TLS_CIPHER_AES_128_CBC,
203 	TLS_CIPHER_AES_256_CBC
204 } tls_cipher;
205 
206 typedef enum {
207 	TLS_HASH_NULL,
208 	TLS_HASH_MD5,
209 	TLS_HASH_SHA,
210 	TLS_HASH_SHA256
211 } tls_hash;
212 
213 struct tls_cipher_suite {
214 	u16 suite;
215 	tls_key_exchange key_exchange;
216 	tls_cipher cipher;
217 	tls_hash hash;
218 };
219 
220 typedef enum {
221 	TLS_CIPHER_STREAM,
222 	TLS_CIPHER_BLOCK
223 } tls_cipher_type;
224 
225 struct tls_cipher_data {
226 	tls_cipher cipher;
227 	tls_cipher_type type;
228 	size_t key_material;
229 	size_t expanded_key_material;
230 	size_t block_size; /* also iv_size */
231 	enum crypto_cipher_alg alg;
232 };
233 
234 
235 struct tls_verify_hash {
236 	struct crypto_hash *md5_client;
237 	struct crypto_hash *sha1_client;
238 	struct crypto_hash *sha256_client;
239 	struct crypto_hash *md5_server;
240 	struct crypto_hash *sha1_server;
241 	struct crypto_hash *sha256_server;
242 	struct crypto_hash *md5_cert;
243 	struct crypto_hash *sha1_cert;
244 	struct crypto_hash *sha256_cert;
245 };
246 
247 
248 const struct tls_cipher_suite * tls_get_cipher_suite(u16 suite);
249 const struct tls_cipher_data * tls_get_cipher_data(tls_cipher cipher);
250 int tls_server_key_exchange_allowed(tls_cipher cipher);
251 int tls_parse_cert(const u8 *buf, size_t len, struct crypto_public_key **pk);
252 int tls_verify_hash_init(struct tls_verify_hash *verify);
253 void tls_verify_hash_add(struct tls_verify_hash *verify, const u8 *buf,
254 			 size_t len);
255 void tls_verify_hash_free(struct tls_verify_hash *verify);
256 int tls_version_ok(u16 ver);
257 const char * tls_version_str(u16 ver);
258 int tls_prf(u16 ver, const u8 *secret, size_t secret_len, const char *label,
259 	    const u8 *seed, size_t seed_len, u8 *out, size_t outlen);
260 int tlsv12_key_x_server_params_hash(u16 tls_version, const u8 *client_random,
261 				    const u8 *server_random,
262 				    const u8 *server_params,
263 				    size_t server_params_len, u8 *hash);
264 int tls_key_x_server_params_hash(u16 tls_version, const u8 *client_random,
265 				 const u8 *server_random,
266 				 const u8 *server_params,
267 				 size_t server_params_len, u8 *hash);
268 int tls_verify_signature(u16 tls_version, struct crypto_public_key *pk,
269 			 const u8 *data, size_t data_len,
270 			 const u8 *pos, size_t len, u8 *alert);
271 
272 #endif /* TLSV1_COMMON_H */
273