contrib/wpa_supplicant-0.5.8/tlsv1_common.h

   1 /*
   2  * wpa_supplicant/hostapd: TLSv1 common definitions
   3  * Copyright (c) 2006, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #ifndef TLSV1_COMMON
  16 #define TLSV1_COMMON
  17
  18 #define TLS_VERSION 0x0301 /* TLSv1 */
  19 #define TLS_RANDOM_LEN 32
  20 #define TLS_PRE_MASTER_SECRET_LEN 48
  21 #define TLS_MASTER_SECRET_LEN 48
  22 #define TLS_SESSION_ID_MAX_LEN 32
  23 #define TLS_VERIFY_DATA_LEN 12
  24 #define TLS_MAX_WRITE_MAC_SECRET_LEN 20
  25 #define TLS_MAX_WRITE_KEY_LEN 32
  26 #define TLS_MAX_IV_LEN 16
  27 #define TLS_MAX_KEY_BLOCK_LEN (2 * (TLS_MAX_WRITE_MAC_SECRET_LEN + \
  28                                     TLS_MAX_WRITE_KEY_LEN + TLS_MAX_IV_LEN))
  29 #define TLS_SEQ_NUM_LEN 8
  30 #define TLS_RECORD_HEADER_LEN 5
  31
  32 /* ContentType */
  33 enum {
  34         TLS_CONTENT_TYPE_CHANGE_CIPHER_SPEC = 20,
  35         TLS_CONTENT_TYPE_ALERT = 21,
  36         TLS_CONTENT_TYPE_HANDSHAKE = 22,
  37         TLS_CONTENT_TYPE_APPLICATION_DATA = 23
  38 };
  39
  40 /* HandshakeType */
  41 enum {
  42         TLS_HANDSHAKE_TYPE_HELLO_REQUEST = 0,
  43         TLS_HANDSHAKE_TYPE_CLIENT_HELLO = 1,
  44         TLS_HANDSHAKE_TYPE_SERVER_HELLO = 2,
  45         TLS_HANDSHAKE_TYPE_CERTIFICATE = 11,
  46         TLS_HANDSHAKE_TYPE_SERVER_KEY_EXCHANGE = 12,
  47         TLS_HANDSHAKE_TYPE_CERTIFICATE_REQUEST = 13,
  48         TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE = 14,
  49         TLS_HANDSHAKE_TYPE_CERTIFICATE_VERIFY = 15,
  50         TLS_HANDSHAKE_TYPE_CLIENT_KEY_EXCHANGE = 16,
  51         TLS_HANDSHAKE_TYPE_FINISHED = 20
  52 };
  53
  54 /* CipherSuite */
  55 #define TLS_NULL_WITH_NULL_NULL                 0x0000 /* RFC 2246 */
  56 #define TLS_RSA_WITH_NULL_MD5                   0x0001 /* RFC 2246 */
  57 #define TLS_RSA_WITH_NULL_SHA                   0x0002 /* RFC 2246 */
  58 #define TLS_RSA_EXPORT_WITH_RC4_40_MD5          0x0003 /* RFC 2246 */
  59 #define TLS_RSA_WITH_RC4_128_MD5                0x0004 /* RFC 2246 */
  60 #define TLS_RSA_WITH_RC4_128_SHA                0x0005 /* RFC 2246 */
  61 #define TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5      0x0006 /* RFC 2246 */
  62 #define TLS_RSA_WITH_IDEA_CBC_SHA               0x0007 /* RFC 2246 */
  63 #define TLS_RSA_EXPORT_WITH_DES40_CBC_SHA       0x0008 /* RFC 2246 */
  64 #define TLS_RSA_WITH_DES_CBC_SHA                0x0009 /* RFC 2246 */
  65 #define TLS_RSA_WITH_3DES_EDE_CBC_SHA           0x000A /* RFC 2246 */
  66 #define TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA    0x000B /* RFC 2246 */
  67 #define TLS_DH_DSS_WITH_DES_CBC_SHA             0x000C /* RFC 2246 */
  68 #define TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA        0x000D /* RFC 2246 */
  69 #define TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA    0x000E /* RFC 2246 */
  70 #define TLS_DH_RSA_WITH_DES_CBC_SHA             0x000F /* RFC 2246 */
  71 #define TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA        0x0010 /* RFC 2246 */
  72 #define TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA   0x0011 /* RFC 2246 */
  73 #define TLS_DHE_DSS_WITH_DES_CBC_SHA            0x0012 /* RFC 2246 */
  74 #define TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA       0x0013 /* RFC 2246 */
  75 #define TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA   0x0014 /* RFC 2246 */
  76 #define TLS_DHE_RSA_WITH_DES_CBC_SHA            0x0015 /* RFC 2246 */
  77 #define TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA       0x0016 /* RFC 2246 */
  78 #define TLS_DH_anon_EXPORT_WITH_RC4_40_MD5      0x0017 /* RFC 2246 */
  79 #define TLS_DH_anon_WITH_RC4_128_MD5            0x0018 /* RFC 2246 */
  80 #define TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA   0x0019 /* RFC 2246 */
  81 #define TLS_DH_anon_WITH_DES_CBC_SHA            0x001A /* RFC 2246 */
  82 #define TLS_DH_anon_WITH_3DES_EDE_CBC_SHA       0x001B /* RFC 2246 */
  83 #define TLS_RSA_WITH_AES_128_CBC_SHA            0x002F /* RFC 3268 */
  84 #define TLS_DH_DSS_WITH_AES_128_CBC_SHA         0x0030 /* RFC 3268 */
  85 #define TLS_DH_RSA_WITH_AES_128_CBC_SHA         0x0031 /* RFC 3268 */
  86 #define TLS_DHE_DSS_WITH_AES_128_CBC_SHA        0x0032 /* RFC 3268 */
  87 #define TLS_DHE_RSA_WITH_AES_128_CBC_SHA        0x0033 /* RFC 3268 */
  88 #define TLS_DH_anon_WITH_AES_128_CBC_SHA        0x0034 /* RFC 3268 */
  89 #define TLS_RSA_WITH_AES_256_CBC_SHA            0x0035 /* RFC 3268 */
  90 #define TLS_DH_DSS_WITH_AES_256_CBC_SHA         0x0036 /* RFC 3268 */
  91 #define TLS_DH_RSA_WITH_AES_256_CBC_SHA         0x0037 /* RFC 3268 */
  92 #define TLS_DHE_DSS_WITH_AES_256_CBC_SHA        0x0038 /* RFC 3268 */
  93 #define TLS_DHE_RSA_WITH_AES_256_CBC_SHA        0x0039 /* RFC 3268 */
  94 #define TLS_DH_anon_WITH_AES_256_CBC_SHA        0x003A /* RFC 3268 */
  95
  96 /* CompressionMethod */
  97 #define TLS_COMPRESSION_NULL 0
  98
  99 /* AlertLevel */
 100 #define TLS_ALERT_LEVEL_WARNING 1
 101 #define TLS_ALERT_LEVEL_FATAL 2
 102
 103 /* AlertDescription */
 104 #define TLS_ALERT_CLOSE_NOTIFY                  0
 105 #define TLS_ALERT_UNEXPECTED_MESSAGE            10
 106 #define TLS_ALERT_BAD_RECORD_MAC                20
 107 #define TLS_ALERT_DECRYPTION_FAILED             21
 108 #define TLS_ALERT_RECORD_OVERFLOW               22
 109 #define TLS_ALERT_DECOMPRESSION_FAILURE         30
 110 #define TLS_ALERT_HANDSHAKE_FAILURE             40
 111 #define TLS_ALERT_BAD_CERTIFICATE               42
 112 #define TLS_ALERT_UNSUPPORTED_CERTIFICATE       43
 113 #define TLS_ALERT_CERTIFICATE_REVOKED           44
 114 #define TLS_ALERT_CERTIFICATE_EXPIRED           45
 115 #define TLS_ALERT_CERTIFICATE_UNKNOWN           46
 116 #define TLS_ALERT_ILLEGAL_PARAMETER             47
 117 #define TLS_ALERT_UNKNOWN_CA                    48
 118 #define TLS_ALERT_ACCESS_DENIED                 49
 119 #define TLS_ALERT_DECODE_ERROR                  50
 120 #define TLS_ALERT_DECRYPT_ERROR                 51
 121 #define TLS_ALERT_EXPORT_RESTRICTION            60
 122 #define TLS_ALERT_PROTOCOL_VERSION              70
 123 #define TLS_ALERT_INSUFFICIENT_SECURITY         71
 124 #define TLS_ALERT_INTERNAL_ERROR                80
 125 #define TLS_ALERT_USER_CANCELED                 90
 126 #define TLS_ALERT_NO_RENEGOTIATION              100
 127
 128 /* ChangeCipherSpec */
 129 enum {
 130         TLS_CHANGE_CIPHER_SPEC = 1
 131 };
 132
 133 /* TLS Extensions */
 134 #define TLS_EXT_PAC_OPAQUE 35
 135
 136
 137 typedef enum {
 138         TLS_KEY_X_NULL,
 139         TLS_KEY_X_RSA,
 140         TLS_KEY_X_RSA_EXPORT,
 141         TLS_KEY_X_DH_DSS_EXPORT,
 142         TLS_KEY_X_DH_DSS,
 143         TLS_KEY_X_DH_RSA_EXPORT,
 144         TLS_KEY_X_DH_RSA,
 145         TLS_KEY_X_DHE_DSS_EXPORT,
 146         TLS_KEY_X_DHE_DSS,
 147         TLS_KEY_X_DHE_RSA_EXPORT,
 148         TLS_KEY_X_DHE_RSA,
 149         TLS_KEY_X_DH_anon_EXPORT,
 150         TLS_KEY_X_DH_anon
 151 } tls_key_exchange;
 152
 153 typedef enum {
 154         TLS_CIPHER_NULL,
 155         TLS_CIPHER_RC4_40,
 156         TLS_CIPHER_RC4_128,
 157         TLS_CIPHER_RC2_CBC_40,
 158         TLS_CIPHER_IDEA_CBC,
 159         TLS_CIPHER_DES40_CBC,
 160         TLS_CIPHER_DES_CBC,
 161         TLS_CIPHER_3DES_EDE_CBC,
 162         TLS_CIPHER_AES_128_CBC,
 163         TLS_CIPHER_AES_256_CBC
 164 } tls_cipher;
 165
 166 typedef enum {
 167         TLS_HASH_NULL,
 168         TLS_HASH_MD5,
 169         TLS_HASH_SHA
 170 } tls_hash;
 171
 172 struct tls_cipher_suite {
 173         u16 suite;
 174         tls_key_exchange key_exchange;
 175         tls_cipher cipher;
 176         tls_hash hash;
 177 };
 178
 179 typedef enum {
 180         TLS_CIPHER_STREAM,
 181         TLS_CIPHER_BLOCK
 182 } tls_cipher_type;
 183
 184 struct tls_cipher_data {
 185         tls_cipher cipher;
 186         tls_cipher_type type;
 187         size_t key_material;
 188         size_t expanded_key_material;
 189         size_t block_size; /* also iv_size */
 190         enum crypto_cipher_alg alg;
 191 };
 192
 193
 194 struct tlsv1_record_layer {
 195         u8 write_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
 196         u8 read_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
 197         u8 write_key[TLS_MAX_WRITE_KEY_LEN];
 198         u8 read_key[TLS_MAX_WRITE_KEY_LEN];
 199         u8 write_iv[TLS_MAX_IV_LEN];
 200         u8 read_iv[TLS_MAX_IV_LEN];
 201
 202         size_t hash_size;
 203         size_t key_material_len;
 204         size_t iv_size; /* also block_size */
 205
 206         enum crypto_hash_alg hash_alg;
 207         enum crypto_cipher_alg cipher_alg;
 208
 209         u8 write_seq_num[TLS_SEQ_NUM_LEN];
 210         u8 read_seq_num[TLS_SEQ_NUM_LEN];
 211
 212         u16 cipher_suite;
 213         u16 write_cipher_suite;
 214         u16 read_cipher_suite;
 215
 216         struct crypto_cipher *write_cbc;
 217         struct crypto_cipher *read_cbc;
 218 };
 219
 220
 221 const struct tls_cipher_suite * tls_get_cipher_suite(u16 suite);
 222 int tls_parse_cert(const u8 *buf, size_t len, struct crypto_public_key **pk);
 223 int tlsv1_record_set_cipher_suite(struct tlsv1_record_layer *rl,
 224                                   u16 cipher_suite);
 225 int tlsv1_record_change_write_cipher(struct tlsv1_record_layer *rl);
 226 int tlsv1_record_change_read_cipher(struct tlsv1_record_layer *rl);
 227 int tlsv1_record_send(struct tlsv1_record_layer *rl, u8 content_type, u8 *buf,
 228                       size_t buf_size, size_t payload_len, size_t *out_len);
 229 int tlsv1_record_receive(struct tlsv1_record_layer *rl,
 230                          const u8 *in_data, size_t in_len,
 231                          u8 *out_data, size_t *out_len, u8 *alert);
 232
 233 #endif /* TLSV1_COMMON_H */