2008-02-28 02:34:43 +01:00
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/*
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* TLSv1 Record Protocol
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* Copyright (c) 2006-2007, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef TLSV1_RECORD_H
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#define TLSV1_RECORD_H
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2009-11-29 22:04:43 +01:00
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#include "crypto/crypto.h"
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2008-02-28 02:34:43 +01:00
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#define TLS_MAX_WRITE_MAC_SECRET_LEN 20
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#define TLS_MAX_WRITE_KEY_LEN 32
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#define TLS_MAX_IV_LEN 16
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#define TLS_MAX_KEY_BLOCK_LEN (2 * (TLS_MAX_WRITE_MAC_SECRET_LEN + \
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TLS_MAX_WRITE_KEY_LEN + TLS_MAX_IV_LEN))
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#define TLS_SEQ_NUM_LEN 8
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#define TLS_RECORD_HEADER_LEN 5
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/* ContentType */
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enum {
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TLS_CONTENT_TYPE_CHANGE_CIPHER_SPEC = 20,
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TLS_CONTENT_TYPE_ALERT = 21,
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TLS_CONTENT_TYPE_HANDSHAKE = 22,
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TLS_CONTENT_TYPE_APPLICATION_DATA = 23
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};
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struct tlsv1_record_layer {
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u8 write_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
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u8 read_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
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u8 write_key[TLS_MAX_WRITE_KEY_LEN];
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u8 read_key[TLS_MAX_WRITE_KEY_LEN];
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u8 write_iv[TLS_MAX_IV_LEN];
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u8 read_iv[TLS_MAX_IV_LEN];
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size_t hash_size;
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size_t key_material_len;
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size_t iv_size; /* also block_size */
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enum crypto_hash_alg hash_alg;
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enum crypto_cipher_alg cipher_alg;
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u8 write_seq_num[TLS_SEQ_NUM_LEN];
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u8 read_seq_num[TLS_SEQ_NUM_LEN];
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u16 cipher_suite;
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u16 write_cipher_suite;
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u16 read_cipher_suite;
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struct crypto_cipher *write_cbc;
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struct crypto_cipher *read_cbc;
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};
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int tlsv1_record_set_cipher_suite(struct tlsv1_record_layer *rl,
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u16 cipher_suite);
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int tlsv1_record_change_write_cipher(struct tlsv1_record_layer *rl);
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int tlsv1_record_change_read_cipher(struct tlsv1_record_layer *rl);
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int tlsv1_record_send(struct tlsv1_record_layer *rl, u8 content_type, u8 *buf,
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size_t buf_size, size_t payload_len, size_t *out_len);
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int tlsv1_record_receive(struct tlsv1_record_layer *rl,
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const u8 *in_data, size_t in_len,
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u8 *out_data, size_t *out_len, u8 *alert);
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#endif /* TLSV1_RECORD_H */
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