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* EAP peer: EAP-TLS/PEAP/TTLS/FAST common functions
* Copyright (c) 2004-2005, Jouni Malinen <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* Alternatively, this software may be distributed under the terms of BSD
* license.
* See README and COPYING for more details.
struct eap_ssl_data {
struct tls_connection *conn;
u8 *tls_out;
size_t tls_out_len;
size_t tls_out_pos;
size_t tls_out_limit;
u8 *tls_in;
size_t tls_in_len;
size_t tls_in_left;
size_t tls_in_total;
int phase2;
int include_tls_length; /* include TLS length field even if the TLS
* data is not fragmented */
int tls_ia; /* Enable TLS/IA */
struct eap_sm *eap;
/* EAP TLS Flags */
#define EAP_TLS_FLAGS_START 0x20
/* could be up to 128 bytes, but only the first 64 bytes are used */
#define EAP_TLS_KEY_LEN 64
int eap_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
struct wpa_ssid *config);
void eap_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
u8 * eap_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
const char *label, size_t len);
const u8 * eap_tls_data_reassemble(
struct eap_sm *sm, struct eap_ssl_data *data, const u8 *in_data,
size_t in_len, size_t *out_len, int *need_more_input);
int eap_tls_process_helper(struct eap_sm *sm, struct eap_ssl_data *data,
EapType eap_type, int peap_version,
u8 id, const u8 *in_data, size_t in_len,
u8 **out_data, size_t *out_len);
u8 * eap_tls_build_ack(struct eap_ssl_data *data, size_t *respDataLen, u8 id,
EapType eap_type, int peap_version);
int eap_tls_reauth_init(struct eap_sm *sm, struct eap_ssl_data *data);
int eap_tls_status(struct eap_sm *sm, struct eap_ssl_data *data, char *buf,
size_t buflen, int verbose);
const u8 * eap_tls_process_init(struct eap_sm *sm, struct eap_ssl_data *data,
EapType eap_type, struct eap_method_ret *ret,
const u8 *reqData, size_t reqDataLen,
size_t *len, u8 *flags);
#endif /* EAP_TLS_COMMON_H */