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* EAP-TLS/PEAP/TTLS/FAST server common functions
* Copyright (c) 2004-2009, Jouni Malinen <>
* This software may be distributed under the terms of the BSD license.
* See README for more details.
* struct eap_ssl_data - TLS data for EAP methods
struct eap_ssl_data {
* conn - TLS connection context data from tls_connection_init()
struct tls_connection *conn;
* tls_out - TLS message to be sent out in fragments
struct wpabuf *tls_out;
* tls_out_pos - The current position in the outgoing TLS message
size_t tls_out_pos;
* tls_out_limit - Maximum fragment size for outgoing TLS messages
size_t tls_out_limit;
* tls_in - Received TLS message buffer for re-assembly
struct wpabuf *tls_in;
* phase2 - Whether this TLS connection is used in EAP phase 2 (tunnel)
int phase2;
* eap - EAP state machine allocated with eap_server_sm_init()
struct eap_sm *eap;
enum { MSG, FRAG_ACK, WAIT_FRAG_ACK } state;
struct wpabuf tmpbuf;
/* 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
/* dummy type used as a flag for UNAUTH-TLS */
struct wpabuf * eap_tls_msg_alloc(EapType type, size_t payload_len,
u8 code, u8 identifier);
int eap_server_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
int verify_peer, int eap_type);
void eap_server_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
u8 * eap_server_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
char *label, size_t len);
u8 * eap_server_tls_derive_session_id(struct eap_sm *sm,
struct eap_ssl_data *data, u8 eap_type,
size_t *len);
struct wpabuf * eap_server_tls_build_msg(struct eap_ssl_data *data,
int eap_type, int version, u8 id);
struct wpabuf * eap_server_tls_build_ack(u8 id, int eap_type, int version);
int eap_server_tls_phase1(struct eap_sm *sm, struct eap_ssl_data *data);
struct wpabuf * eap_server_tls_encrypt(struct eap_sm *sm,
struct eap_ssl_data *data,
const struct wpabuf *plain);
int eap_server_tls_process(struct eap_sm *sm, struct eap_ssl_data *data,
struct wpabuf *respData, void *priv, int eap_type,
int (*proc_version)(struct eap_sm *sm, void *priv,
int peer_version),
void (*proc_msg)(struct eap_sm *sm, void *priv,
const struct wpabuf *respData));
#endif /* EAP_TLS_COMMON_H */