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00015 #ifndef TLSV1_RECORD_H
00016 #define TLSV1_RECORD_H
00017
00018 #include "crypto/crypto.h"
00019
00020 #define TLS_MAX_WRITE_MAC_SECRET_LEN 20
00021 #define TLS_MAX_WRITE_KEY_LEN 32
00022 #define TLS_MAX_IV_LEN 16
00023 #define TLS_MAX_KEY_BLOCK_LEN (2 * (TLS_MAX_WRITE_MAC_SECRET_LEN + \
00024 TLS_MAX_WRITE_KEY_LEN + TLS_MAX_IV_LEN))
00025
00026 #define TLS_SEQ_NUM_LEN 8
00027 #define TLS_RECORD_HEADER_LEN 5
00028
00029
00030 enum {
00031 TLS_CONTENT_TYPE_CHANGE_CIPHER_SPEC = 20,
00032 TLS_CONTENT_TYPE_ALERT = 21,
00033 TLS_CONTENT_TYPE_HANDSHAKE = 22,
00034 TLS_CONTENT_TYPE_APPLICATION_DATA = 23
00035 };
00036
00037 struct tlsv1_record_layer {
00038 u8 write_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
00039 u8 read_mac_secret[TLS_MAX_WRITE_MAC_SECRET_LEN];
00040 u8 write_key[TLS_MAX_WRITE_KEY_LEN];
00041 u8 read_key[TLS_MAX_WRITE_KEY_LEN];
00042 u8 write_iv[TLS_MAX_IV_LEN];
00043 u8 read_iv[TLS_MAX_IV_LEN];
00044
00045 size_t hash_size;
00046 size_t key_material_len;
00047 size_t iv_size;
00048
00049 enum crypto_hash_alg hash_alg;
00050 enum crypto_cipher_alg cipher_alg;
00051
00052 u8 write_seq_num[TLS_SEQ_NUM_LEN];
00053 u8 read_seq_num[TLS_SEQ_NUM_LEN];
00054
00055 u16 cipher_suite;
00056 u16 write_cipher_suite;
00057 u16 read_cipher_suite;
00058
00059 struct crypto_cipher *write_cbc;
00060 struct crypto_cipher *read_cbc;
00061 };
00062
00063
00064 int tlsv1_record_set_cipher_suite(struct tlsv1_record_layer *rl,
00065 u16 cipher_suite);
00066 int tlsv1_record_change_write_cipher(struct tlsv1_record_layer *rl);
00067 int tlsv1_record_change_read_cipher(struct tlsv1_record_layer *rl);
00068 int tlsv1_record_send(struct tlsv1_record_layer *rl, u8 content_type, u8 *buf,
00069 size_t buf_size, size_t payload_len, size_t *out_len);
00070 int tlsv1_record_receive(struct tlsv1_record_layer *rl,
00071 const u8 *in_data, size_t in_len,
00072 u8 *out_data, size_t *out_len, u8 *alert);
00073
00074 #endif