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iwd/src/dpp-util.h

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/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2021 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
struct l_ecc_point;
struct l_ecc_scalar;
enum ie_rsn_akm_suite;
struct scan_freq_set;
struct dpp_uri_info {
struct scan_freq_set *freqs;
struct l_ecc_point *boot_public;
uint8_t mac[6];
char *information;
uint8_t version;
char *host;
};
enum dpp_frame_type {
DPP_FRAME_AUTHENTICATION_REQUEST = 0,
DPP_FRAME_AUTHENTICATION_RESPONSE = 1,
DPP_FRAME_AUTHENTICATION_CONFIRM = 2,
/* 3 - 4 reserved */
DPP_FRAME_PEER_DISCOVERY_REQUEST = 5,
DPP_FRAME_PEER_DISCOVERY_RESPONSE = 6,
DPP_FRAME_PKEX_VERSION1_XCHG_REQUEST = 7,
DPP_FRAME_PKEX_XCHG_RESPONSE = 8,
DPP_FRAME_PKEX_COMMIT_REVEAL_REQUEST = 9,
DPP_FRAME_PKEX_COMMIT_REVEAL_RESPONSE = 10,
DPP_FRAME_CONFIGURATION_RESULT = 11,
DPP_FRAME_CONNECTION_STATUS_RESULT = 12,
DPP_FRAME_PRESENCE_ANNOUNCEMENT = 13,
DPP_FRAME_RECONF_ANNOUNCEMENT = 14,
DPP_FRAME_RECONF_AUTHENTICATION_REQUEST = 15,
DPP_FRAME_RECONF_AUTHENTICATION_RESPONSE = 16,
DPP_FRAME_RECONF_AUTHENTICATION_CONFIRM = 17,
DPP_FRAME_PKEX_XCHG_REQUEST = 18,
/* 19 - 255 reserved */
};
enum dpp_status {
DPP_STATUS_OK,
DPP_STATUS_NOT_COMPATIBLE,
DPP_STATUS_AUTH_FAILURE,
DPP_STATUS_BAD_CODE,
DPP_STATUS_BAD_GROUP,
DPP_STATUS_CONFIGURE_FAILURE,
DPP_STATUS_RESPONSE_PENDING,
DPP_STATUS_INVALID_CONNECTOR,
DPP_STATUS_NO_MATCH,
DPP_STATUS_CONFIG_REJECTED,
DPP_STATUS_NO_AP,
DPP_STATUS_CONFIGURE_PENDING,
DPP_STATUS_CSR_NEEDED,
DPP_STATUS_CSR_BAD,
DPP_STATUS_NEW_KEY_NEEDED,
};
enum dpp_attribute_type {
/* 0000 - 0FFF reserved */
DPP_ATTR_STATUS = 0x1000,
DPP_ATTR_INITIATOR_BOOT_KEY_HASH = 0x1001,
DPP_ATTR_RESPONDER_BOOT_KEY_HASH = 0x1002,
DPP_ATTR_INITIATOR_PROTOCOL_KEY = 0x1003,
DPP_ATTR_WRAPPED_DATA = 0x1004,
DPP_ATTR_INITIATOR_NONCE = 0x1005,
DPP_ATTR_INITIATOR_CAPABILITIES = 0x1006,
DPP_ATTR_RESPONDER_NONCE = 0x1007,
DPP_ATTR_RESPONDER_CAPABILITIES = 0x1008,
DPP_ATTR_RESPONDER_PROTOCOL_KEY = 0x1009,
DPP_ATTR_INITIATOR_AUTH_TAG = 0x100a,
DPP_ATTR_RESPONDER_AUTH_TAG = 0x100b,
DPP_ATTR_CONFIGURATION_OBJECT = 0x100c,
DPP_ATTR_CONNECTOR = 0x100d,
DPP_ATTR_CONFIGURATION_REQUEST = 0x100e,
DPP_ATTR_BOOTSTRAPPING_KEY = 0x100f,
/* 1010 - 1011 reserved */
DPP_ATTR_FINITE_CYCLIC_GROUP = 0x1012,
DPP_ATTR_ENCRYPTED_KEY = 0x1013,
DPP_ATTR_ENROLLEE_NONCE = 0x1014,
DPP_ATTR_CODE_IDENTIFIER = 0x1015,
DPP_ATTR_TRANSACTION_ID = 0x1016,
DPP_ATTR_BOOTSTRAPPING_INFO = 0x1017,
DPP_ATTR_CHANNEL = 0x1018,
DPP_ATTR_PROTOCOL_VERSION = 0x1019,
DPP_ATTR_ENVELOPED_DATA = 0x101a,
DPP_ATTR_SEND_CONN_STATUS = 0x101b,
DPP_ATTR_CONN_STATUS = 0x101c,
DPP_ATTR_RECONFIGURATION_FLAGS = 0x101d,
DPP_ATTR_C_SIGN_KEY_HASH = 0x101e,
DPP_ATTR_CSR_ATTRIBUTES_REQUEST = 0x101f,
DPP_ATTR_ANONCE = 0x1020,
DPP_ATTR_EID = 0x1021,
DPP_ATTR_CONFIGURATOR_NONCE = 0x1022,
};
struct dpp_configuration {
char ssid[33];
size_t ssid_len;
uint32_t akm_suites;
char *passphrase;
char *psk; /* hex string */
/* "3rd party extensions" only applicable for two IWD peers */
bool send_hostname : 1;
bool hidden : 1;
};
struct dpp_configuration *dpp_parse_configuration_object(const char *json,
size_t json_len);
struct dpp_configuration *dpp_configuration_new(
const struct l_settings *settings,
const char *ssid,
enum ie_rsn_akm_suite akm_suite);
char *dpp_configuration_to_json(struct dpp_configuration *config);
void dpp_configuration_free(struct dpp_configuration *conf);
struct dpp_attr_iter {
const uint8_t *pos;
const uint8_t *end;
};
void dpp_attr_iter_init(struct dpp_attr_iter *iter, const uint8_t *pdu,
size_t len);
bool dpp_attr_iter_next(struct dpp_attr_iter *iter,
enum dpp_attribute_type *type, size_t *len,
const uint8_t **data);
uint8_t *dpp_unwrap_attr(const void *ad0, size_t ad0_len, const void *ad1,
size_t ad1_len, const void *key, size_t key_len,
const void *wrapped, size_t wrapped_len,
size_t *unwrapped_len);
size_t dpp_append_attr(uint8_t *to, enum dpp_attribute_type type,
void *attr, size_t attr_len);
size_t dpp_append_wrapped_data(const void *ad0, size_t ad0_len, const void *ad1,
size_t ad1_len, uint8_t *to, size_t to_len,
const void *key, size_t key_len,
size_t num_attrs, ...);
char *dpp_generate_uri(const uint8_t *asn1, size_t asn1_len, uint8_t version,
const uint8_t *mac, const uint32_t *freqs,
size_t freqs_len, const char *info, const char *host);
size_t dpp_nonce_len_from_key_len(size_t len);
bool dpp_hash(enum l_checksum_type type, uint8_t *out, unsigned int num, ...);
bool dpp_derive_r_auth(const void *i_nonce, const void *r_nonce,
size_t nonce_len, struct l_ecc_point *i_proto,
struct l_ecc_point *r_proto,
struct l_ecc_point *i_boot,
struct l_ecc_point *r_boot,
void *r_auth);
bool dpp_derive_i_auth(const void *r_nonce, const void *i_nonce,
size_t nonce_len, struct l_ecc_point *r_proto,
struct l_ecc_point *i_proto,
struct l_ecc_point *r_boot,
struct l_ecc_point *i_boot, void *i_auth);
struct l_ecc_scalar *dpp_derive_k1(const struct l_ecc_point *i_proto_public,
const struct l_ecc_scalar *boot_private,
void *k1);
struct l_ecc_scalar *dpp_derive_k2(const struct l_ecc_point *i_proto_public,
const struct l_ecc_scalar *proto_private,
void *k2);
bool dpp_derive_ke(const uint8_t *i_nonce, const uint8_t *r_nonce,
struct l_ecc_scalar *m, struct l_ecc_scalar *n,
struct l_ecc_point *l, void *ke);
uint8_t *dpp_point_to_asn1(const struct l_ecc_point *p, size_t *len_out);
struct l_ecc_point *dpp_point_from_asn1(const uint8_t *asn1, size_t len);
struct dpp_uri_info *dpp_parse_uri(const char *uri);
void dpp_free_uri_info(struct dpp_uri_info *info);
struct l_ecc_point *dpp_derive_qi(const struct l_ecc_curve *curve,
const char *key,
const char *identifier,
const uint8_t *mac_initiator);
struct l_ecc_point *dpp_derive_qr(const struct l_ecc_curve *curve,
const char *key,
const char *identifier,
const uint8_t *mac_responder);
struct l_ecc_point *dpp_derive_li(
const struct l_ecc_point *boot_public,
const struct l_ecc_point *proto_public,
const struct l_ecc_scalar *boot_private);
struct l_ecc_point *dpp_derive_lr(
const struct l_ecc_scalar *boot_private,
const struct l_ecc_scalar *proto_private,
const struct l_ecc_point *peer_public);
bool dpp_derive_z(const uint8_t *mac_i, const uint8_t *mac_r,
const struct l_ecc_point *n,
const struct l_ecc_point *m,
const struct l_ecc_point *k,
const char *key,
const char *identifier,
void *z_out, size_t *z_len);
bool dpp_derive_u(const struct l_ecc_point *j,
const uint8_t *mac_i,
const struct l_ecc_point *a,
const struct l_ecc_point *y,
const struct l_ecc_point *x,
void *u_out, size_t *u_len);
bool dpp_derive_v(const struct l_ecc_point *l, const uint8_t *mac,
const struct l_ecc_point *b,
const struct l_ecc_point *x,
const struct l_ecc_point *y,
void *v_out, size_t *v_len);
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