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_SIGNATURE_ALGORITHMS		13 /* RFC 5246 */
173  #define TLS_EXT_STATUS_REQUEST_V2		17 /* RFC 6961 */
174  #define TLS_EXT_SESSION_TICKET			35 /* RFC 4507 */
175  
176  #define TLS_EXT_PAC_OPAQUE TLS_EXT_SESSION_TICKET /* EAP-FAST terminology */
177  
178  
179  typedef enum {
180  	TLS_KEY_X_NULL,
181  	TLS_KEY_X_RSA,
182  	TLS_KEY_X_RSA_EXPORT,
183  	TLS_KEY_X_DH_DSS_EXPORT,
184  	TLS_KEY_X_DH_DSS,
185  	TLS_KEY_X_DH_RSA_EXPORT,
186  	TLS_KEY_X_DH_RSA,
187  	TLS_KEY_X_DHE_DSS_EXPORT,
188  	TLS_KEY_X_DHE_DSS,
189  	TLS_KEY_X_DHE_RSA_EXPORT,
190  	TLS_KEY_X_DHE_RSA,
191  	TLS_KEY_X_DH_anon_EXPORT,
192  	TLS_KEY_X_DH_anon
193  } tls_key_exchange;
194  
195  typedef enum {
196  	TLS_CIPHER_NULL,
197  	TLS_CIPHER_RC4_40,
198  	TLS_CIPHER_RC4_128,
199  	TLS_CIPHER_RC2_CBC_40,
200  	TLS_CIPHER_IDEA_CBC,
201  	TLS_CIPHER_DES40_CBC,
202  	TLS_CIPHER_DES_CBC,
203  	TLS_CIPHER_3DES_EDE_CBC,
204  	TLS_CIPHER_AES_128_CBC,
205  	TLS_CIPHER_AES_256_CBC
206  } tls_cipher;
207  
208  typedef enum {
209  	TLS_HASH_NULL,
210  	TLS_HASH_MD5,
211  	TLS_HASH_SHA,
212  	TLS_HASH_SHA256
213  } tls_hash;
214  
215  struct tls_cipher_suite {
216  	u16 suite;
217  	tls_key_exchange key_exchange;
218  	tls_cipher cipher;
219  	tls_hash hash;
220  };
221  
222  typedef enum {
223  	TLS_CIPHER_STREAM,
224  	TLS_CIPHER_BLOCK
225  } tls_cipher_type;
226  
227  struct tls_cipher_data {
228  	tls_cipher cipher;
229  	tls_cipher_type type;
230  	size_t key_material;
231  	size_t expanded_key_material;
232  	size_t block_size; /* also iv_size */
233  	enum crypto_cipher_alg alg;
234  };
235  
236  
237  struct tls_verify_hash {
238  	struct crypto_hash *md5_client;
239  	struct crypto_hash *sha1_client;
240  	struct crypto_hash *sha256_client;
241  	struct crypto_hash *md5_server;
242  	struct crypto_hash *sha1_server;
243  	struct crypto_hash *sha256_server;
244  	struct crypto_hash *md5_cert;
245  	struct crypto_hash *sha1_cert;
246  	struct crypto_hash *sha256_cert;
247  };
248  
249  
250  const struct tls_cipher_suite * tls_get_cipher_suite(u16 suite);
251  const struct tls_cipher_data * tls_get_cipher_data(tls_cipher cipher);
252  int tls_server_key_exchange_allowed(tls_cipher cipher);
253  int tls_parse_cert(const u8 *buf, size_t len, struct crypto_public_key **pk);
254  int tls_verify_hash_init(struct tls_verify_hash *verify);
255  void tls_verify_hash_add(struct tls_verify_hash *verify, const u8 *buf,
256  			 size_t len);
257  void tls_verify_hash_free(struct tls_verify_hash *verify);
258  int tls_version_ok(u16 ver);
259  const char * tls_version_str(u16 ver);
260  int tls_prf(u16 ver, const u8 *secret, size_t secret_len, const char *label,
261  	    const u8 *seed, size_t seed_len, u8 *out, size_t outlen);
262  int tlsv12_key_x_server_params_hash(u16 tls_version, u8 hash_Alg,
263  				    const u8 *client_random,
264  				    const u8 *server_random,
265  				    const u8 *server_params,
266  				    size_t server_params_len, u8 *hash);
267  int tls_key_x_server_params_hash(u16 tls_version, const u8 *client_random,
268  				 const u8 *server_random,
269  				 const u8 *server_params,
270  				 size_t server_params_len,
271  				 u8 *hash, size_t hsz);
272  int tls_verify_signature(u16 tls_version, struct crypto_public_key *pk,
273  			 const u8 *data, size_t data_len,
274  			 const u8 *pos, size_t len, u8 *alert);
275  
276  #endif /* TLSV1_COMMON_H */
277