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https://github.com/vanhoefm/fragattacks.git
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f3f2eeba01
The use_psk_key parameter can now be used to force the Registrar to use PSK format instead of ASCII passphrase when building a Credential for the Enrollee. For now, this is not enabled, but it could be enabled either based on external (to WPS) configuration or automatically set based on some WPS attribute values from the Enrollee.
277 lines
8.8 KiB
C
277 lines
8.8 KiB
C
/*
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* Wi-Fi Protected Setup - internal definitions
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* Copyright (c) 2008-2009, 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 WPS_I_H
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#define WPS_I_H
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#include "wps.h"
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/**
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* struct wps_data - WPS registration protocol data
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*
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* This data is stored at the EAP-WSC server/peer method and it is kept for a
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* single registration protocol run.
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*/
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struct wps_data {
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/**
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* wps - Pointer to long term WPS context
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*/
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struct wps_context *wps;
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/**
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* registrar - Whether this end is a Registrar
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*/
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int registrar;
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/**
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* er - Whether the local end is an external registrar
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*/
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int er;
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enum {
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/* Enrollee states */
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SEND_M1, RECV_M2, SEND_M3, RECV_M4, SEND_M5, RECV_M6, SEND_M7,
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RECV_M8, RECEIVED_M2D, WPS_MSG_DONE, RECV_ACK, WPS_FINISHED,
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SEND_WSC_NACK,
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/* Registrar states */
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RECV_M1, SEND_M2, RECV_M3, SEND_M4, RECV_M5, SEND_M6,
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RECV_M7, SEND_M8, RECV_DONE, SEND_M2D, RECV_M2D_ACK
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} state;
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u8 uuid_e[WPS_UUID_LEN];
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u8 uuid_r[WPS_UUID_LEN];
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u8 mac_addr_e[ETH_ALEN];
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u8 nonce_e[WPS_NONCE_LEN];
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u8 nonce_r[WPS_NONCE_LEN];
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u8 psk1[WPS_PSK_LEN];
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u8 psk2[WPS_PSK_LEN];
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u8 snonce[2 * WPS_SECRET_NONCE_LEN];
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u8 peer_hash1[WPS_HASH_LEN];
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u8 peer_hash2[WPS_HASH_LEN];
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struct wpabuf *dh_privkey;
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struct wpabuf *dh_pubkey_e;
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struct wpabuf *dh_pubkey_r;
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u8 authkey[WPS_AUTHKEY_LEN];
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u8 keywrapkey[WPS_KEYWRAPKEY_LEN];
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u8 emsk[WPS_EMSK_LEN];
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struct wpabuf *last_msg;
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u8 *dev_password;
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size_t dev_password_len;
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u16 dev_pw_id;
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int pbc;
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/**
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* request_type - Request Type attribute from (Re)AssocReq
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*/
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u8 request_type;
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/**
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* encr_type - Available encryption types
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*/
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u16 encr_type;
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/**
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* auth_type - Available authentication types
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*/
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u16 auth_type;
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u8 *new_psk;
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size_t new_psk_len;
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int wps_pin_revealed;
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struct wps_credential cred;
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struct wps_device_data peer_dev;
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/**
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* config_error - Configuration Error value to be used in NACK
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*/
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u16 config_error;
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int ext_reg;
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struct wps_credential *new_ap_settings;
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void *dh_ctx;
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void (*ap_settings_cb)(void *ctx, const struct wps_credential *cred);
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void *ap_settings_cb_ctx;
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struct wps_credential *use_cred;
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int use_psk_key;
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};
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struct wps_parse_attr {
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/* fixed length fields */
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const u8 *version; /* 1 octet */
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const u8 *msg_type; /* 1 octet */
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const u8 *enrollee_nonce; /* WPS_NONCE_LEN (16) octets */
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const u8 *registrar_nonce; /* WPS_NONCE_LEN (16) octets */
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const u8 *uuid_r; /* WPS_UUID_LEN (16) octets */
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const u8 *uuid_e; /* WPS_UUID_LEN (16) octets */
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const u8 *auth_type_flags; /* 2 octets */
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const u8 *encr_type_flags; /* 2 octets */
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const u8 *conn_type_flags; /* 1 octet */
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const u8 *config_methods; /* 2 octets */
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const u8 *sel_reg_config_methods; /* 2 octets */
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const u8 *primary_dev_type; /* 8 octets */
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const u8 *rf_bands; /* 1 octet */
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const u8 *assoc_state; /* 2 octets */
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const u8 *config_error; /* 2 octets */
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const u8 *dev_password_id; /* 2 octets */
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const u8 *oob_dev_password; /* WPS_OOB_DEVICE_PASSWORD_ATTR_LEN (54)
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* octets */
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const u8 *os_version; /* 4 octets */
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const u8 *wps_state; /* 1 octet */
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const u8 *authenticator; /* WPS_AUTHENTICATOR_LEN (8) octets */
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const u8 *r_hash1; /* WPS_HASH_LEN (32) octets */
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const u8 *r_hash2; /* WPS_HASH_LEN (32) octets */
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const u8 *e_hash1; /* WPS_HASH_LEN (32) octets */
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const u8 *e_hash2; /* WPS_HASH_LEN (32) octets */
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const u8 *r_snonce1; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *r_snonce2; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *e_snonce1; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *e_snonce2; /* WPS_SECRET_NONCE_LEN (16) octets */
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const u8 *key_wrap_auth; /* WPS_KWA_LEN (8) octets */
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const u8 *auth_type; /* 2 octets */
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const u8 *encr_type; /* 2 octets */
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const u8 *network_idx; /* 1 octet */
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const u8 *network_key_idx; /* 1 octet */
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const u8 *mac_addr; /* ETH_ALEN (6) octets */
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const u8 *key_prov_auto; /* 1 octet (Bool) */
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const u8 *dot1x_enabled; /* 1 octet (Bool) */
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const u8 *selected_registrar; /* 1 octet (Bool) */
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const u8 *request_type; /* 1 octet */
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const u8 *response_type; /* 1 octet */
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const u8 *ap_setup_locked; /* 1 octet */
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/* variable length fields */
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const u8 *manufacturer;
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size_t manufacturer_len;
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const u8 *model_name;
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size_t model_name_len;
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const u8 *model_number;
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size_t model_number_len;
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const u8 *serial_number;
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size_t serial_number_len;
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const u8 *dev_name;
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size_t dev_name_len;
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const u8 *public_key;
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size_t public_key_len;
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const u8 *encr_settings;
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size_t encr_settings_len;
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const u8 *ssid; /* <= 32 octets */
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size_t ssid_len;
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const u8 *network_key; /* <= 64 octets */
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size_t network_key_len;
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const u8 *eap_type; /* <= 8 octets */
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size_t eap_type_len;
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const u8 *eap_identity; /* <= 64 octets */
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size_t eap_identity_len;
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/* attributes that can occur multiple times */
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#define MAX_CRED_COUNT 10
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const u8 *cred[MAX_CRED_COUNT];
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size_t cred_len[MAX_CRED_COUNT];
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size_t num_cred;
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};
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/* wps_common.c */
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void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len,
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const char *label, u8 *res, size_t res_len);
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int wps_derive_keys(struct wps_data *wps);
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void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd,
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size_t dev_passwd_len);
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struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr,
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size_t encr_len);
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void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg);
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void wps_success_event(struct wps_context *wps);
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void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part);
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void wps_pbc_overlap_event(struct wps_context *wps);
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void wps_pbc_timeout_event(struct wps_context *wps);
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extern struct oob_device_data oob_ufd_device_data;
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extern struct oob_device_data oob_nfc_device_data;
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extern struct oob_nfc_device_data oob_nfc_pn531_device_data;
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/* wps_attr_parse.c */
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int wps_parse_msg(const struct wpabuf *msg, struct wps_parse_attr *attr);
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/* wps_attr_build.c */
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int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_req_type(struct wpabuf *msg, enum wps_request_type type);
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int wps_build_config_methods(struct wpabuf *msg, u16 methods);
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int wps_build_uuid_e(struct wpabuf *msg, const u8 *uuid);
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int wps_build_dev_password_id(struct wpabuf *msg, u16 id);
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int wps_build_config_error(struct wpabuf *msg, u16 err);
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int wps_build_authenticator(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_encr_settings(struct wps_data *wps, struct wpabuf *msg,
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struct wpabuf *plain);
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int wps_build_version(struct wpabuf *msg);
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int wps_build_msg_type(struct wpabuf *msg, enum wps_msg_type msg_type);
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int wps_build_enrollee_nonce(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_registrar_nonce(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_auth_type_flags(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_encr_type_flags(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_conn_type_flags(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_assoc_state(struct wps_data *wps, struct wpabuf *msg);
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int wps_build_oob_dev_password(struct wpabuf *msg, struct wps_context *wps);
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/* wps_attr_process.c */
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int wps_process_authenticator(struct wps_data *wps, const u8 *authenticator,
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const struct wpabuf *msg);
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int wps_process_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg,
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const u8 *key_wrap_auth);
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int wps_process_cred(struct wps_parse_attr *attr,
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struct wps_credential *cred);
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int wps_process_ap_settings(struct wps_parse_attr *attr,
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struct wps_credential *cred);
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/* wps_enrollee.c */
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struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps,
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enum wsc_op_code *op_code);
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enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps,
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enum wsc_op_code op_code,
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const struct wpabuf *msg);
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/* wps_registrar.c */
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struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
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enum wsc_op_code *op_code);
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enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
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enum wsc_op_code op_code,
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const struct wpabuf *msg);
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int wps_build_cred(struct wps_data *wps, struct wpabuf *msg);
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int wps_device_store(struct wps_registrar *reg,
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struct wps_device_data *dev, const u8 *uuid);
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void wps_registrar_selected_registrar_changed(struct wps_registrar *reg);
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/* ndef.c */
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struct wpabuf * ndef_parse_wifi(struct wpabuf *buf);
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struct wpabuf * ndef_build_wifi(struct wpabuf *buf);
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static inline int wps_version_supported(const u8 *version)
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{
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/* Require major version match, but allow minor version differences */
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return version && (*version & 0xf0) == (WPS_VERSION & 0xf0);
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}
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#endif /* WPS_I_H */
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