2 * TLS v1.0 (RFC 2246) and v1.1 (RFC 4346) Record Protocol
3 * Copyright (c) 2006-2011, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
15 #ifndef TLSV1_RECORD_H
16 #define TLSV1_RECORD_H
18 #include "crypto/crypto.h"
20 #define TLS_MAX_WRITE_MAC_SECRET_LEN 32
21 #define TLS_MAX_WRITE_KEY_LEN 32
22 #define TLS_MAX_IV_LEN 16
23 #define TLS_MAX_KEY_BLOCK_LEN (2 * (TLS_MAX_WRITE_MAC_SECRET_LEN + \
24 TLS_MAX_WRITE_KEY_LEN + TLS_MAX_IV_LEN))
26 #define TLS_SEQ_NUM_LEN 8
27 #define TLS_RECORD_HEADER_LEN 5
31 TLS_CONTENT_TYPE_CHANGE_CIPHER_SPEC = 20,
32 TLS_CONTENT_TYPE_ALERT = 21,
33 TLS_CONTENT_TYPE_HANDSHAKE = 22,
34 TLS_CONTENT_TYPE_APPLICATION_DATA = 23
37 struct tlsv1_record_layer {
40 u8 write_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
41 u8 read_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
42 u8 write_key[TLS_MAX_WRITE_KEY_LEN];
43 u8 read_key[TLS_MAX_WRITE_KEY_LEN];
44 u8 write_iv[TLS_MAX_IV_LEN];
45 u8 read_iv[TLS_MAX_IV_LEN];
48 size_t key_material_len;
49 size_t iv_size; /* also block_size */
51 enum crypto_hash_alg hash_alg;
52 enum crypto_cipher_alg cipher_alg;
54 u8 write_seq_num[TLS_SEQ_NUM_LEN];
55 u8 read_seq_num[TLS_SEQ_NUM_LEN];
58 u16 write_cipher_suite;
59 u16 read_cipher_suite;
61 struct crypto_cipher *write_cbc;
62 struct crypto_cipher *read_cbc;
66 int tlsv1_record_set_cipher_suite(struct tlsv1_record_layer *rl,
68 int tlsv1_record_change_write_cipher(struct tlsv1_record_layer *rl);
69 int tlsv1_record_change_read_cipher(struct tlsv1_record_layer *rl);
70 int tlsv1_record_send(struct tlsv1_record_layer *rl, u8 content_type, u8 *buf,
71 size_t buf_size, const u8 *payload, size_t payload_len,
73 int tlsv1_record_receive(struct tlsv1_record_layer *rl,
74 const u8 *in_data, size_t in_len,
75 u8 *out_data, size_t *out_len, u8 *alert);
77 #endif /* TLSV1_RECORD_H */