20f612d998
This enhances DPP_AUTH_INIT, DPP_CONFIGURATOR_SIGN, and SET
dpp_configurator_params to allow optional setting of the DPP groupId
string for a Connector. If the value is not set, the previously wildcard
value ("*") is used by default.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
435 lines
14 KiB
C
435 lines
14 KiB
C
/*
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* DPP functionality shared between hostapd and wpa_supplicant
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* Copyright (c) 2017, Qualcomm Atheros, Inc.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef DPP_H
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#define DPP_H
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#include <openssl/x509.h>
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#include "utils/list.h"
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#include "common/wpa_common.h"
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#include "crypto/sha256.h"
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#define DPP_HDR_LEN (4 + 2) /* OUI, OUI Type, Crypto Suite, DPP frame type */
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enum dpp_public_action_frame_type {
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DPP_PA_AUTHENTICATION_REQ = 0,
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DPP_PA_AUTHENTICATION_RESP = 1,
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DPP_PA_AUTHENTICATION_CONF = 2,
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DPP_PA_PEER_DISCOVERY_REQ = 5,
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DPP_PA_PEER_DISCOVERY_RESP = 6,
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DPP_PA_PKEX_EXCHANGE_REQ = 7,
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DPP_PA_PKEX_EXCHANGE_RESP = 8,
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DPP_PA_PKEX_COMMIT_REVEAL_REQ = 9,
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DPP_PA_PKEX_COMMIT_REVEAL_RESP = 10,
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};
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enum dpp_attribute_id {
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DPP_ATTR_STATUS = 0x1000,
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DPP_ATTR_I_BOOTSTRAP_KEY_HASH = 0x1001,
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DPP_ATTR_R_BOOTSTRAP_KEY_HASH = 0x1002,
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DPP_ATTR_I_PROTOCOL_KEY = 0x1003,
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DPP_ATTR_WRAPPED_DATA = 0x1004,
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DPP_ATTR_I_NONCE = 0x1005,
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DPP_ATTR_I_CAPABILITIES = 0x1006,
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DPP_ATTR_R_NONCE = 0x1007,
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DPP_ATTR_R_CAPABILITIES = 0x1008,
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DPP_ATTR_R_PROTOCOL_KEY = 0x1009,
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DPP_ATTR_I_AUTH_TAG = 0x100A,
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DPP_ATTR_R_AUTH_TAG = 0x100B,
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DPP_ATTR_CONFIG_OBJ = 0x100C,
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DPP_ATTR_CONNECTOR = 0x100D,
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DPP_ATTR_CONFIG_ATTR_OBJ = 0x100E,
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DPP_ATTR_BOOTSTRAP_KEY = 0x100F,
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DPP_ATTR_OWN_NET_NK_HASH = 0x1011,
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DPP_ATTR_FINITE_CYCLIC_GROUP = 0x1012,
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DPP_ATTR_ENCRYPTED_KEY = 0x1013,
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DPP_ATTR_ENROLLEE_NONCE = 0x1014,
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DPP_ATTR_CODE_IDENTIFIER = 0x1015,
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DPP_ATTR_TRANSACTION_ID = 0x1016,
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DPP_ATTR_BOOTSTRAP_INFO = 0x1017,
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DPP_ATTR_CHANNEL = 0x1018,
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};
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enum dpp_status_error {
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DPP_STATUS_OK = 0,
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DPP_STATUS_NOT_COMPATIBLE = 1,
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DPP_STATUS_AUTH_FAILURE = 2,
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DPP_STATUS_UNWRAP_FAILURE = 3,
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DPP_STATUS_BAD_GROUP = 4,
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DPP_STATUS_CONFIGURE_FAILURE = 5,
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DPP_STATUS_RESPONSE_PENDING = 6,
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DPP_STATUS_INVALID_CONNECTOR = 7,
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DPP_STATUS_NO_MATCH = 8,
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};
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#define DPP_CAPAB_ENROLLEE BIT(0)
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#define DPP_CAPAB_CONFIGURATOR BIT(1)
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#define DPP_CAPAB_ROLE_MASK (BIT(0) | BIT(1))
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#define DPP_BOOTSTRAP_MAX_FREQ 30
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#define DPP_MAX_NONCE_LEN 32
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#define DPP_MAX_HASH_LEN 64
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#define DPP_MAX_SHARED_SECRET_LEN 66
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struct dpp_curve_params {
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const char *name;
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size_t hash_len;
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size_t aes_siv_key_len;
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size_t nonce_len;
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size_t prime_len;
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const char *jwk_crv;
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u16 ike_group;
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const char *jws_alg;
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};
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enum dpp_bootstrap_type {
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DPP_BOOTSTRAP_QR_CODE,
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DPP_BOOTSTRAP_PKEX,
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};
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struct dpp_bootstrap_info {
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struct dl_list list;
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unsigned int id;
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enum dpp_bootstrap_type type;
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char *uri;
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u8 mac_addr[ETH_ALEN];
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char *info;
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unsigned int freq[DPP_BOOTSTRAP_MAX_FREQ];
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unsigned int num_freq;
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int own;
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EVP_PKEY *pubkey;
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u8 pubkey_hash[SHA256_MAC_LEN];
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const struct dpp_curve_params *curve;
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unsigned int pkex_t; /* number of failures before dpp_pkex
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* instantiation */
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};
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#define PKEX_COUNTER_T_LIMIT 5
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struct dpp_pkex {
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void *msg_ctx;
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unsigned int initiator:1;
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unsigned int exchange_done:1;
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unsigned int failed:1;
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struct dpp_bootstrap_info *own_bi;
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u8 own_mac[ETH_ALEN];
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u8 peer_mac[ETH_ALEN];
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char *identifier;
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char *code;
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EVP_PKEY *x;
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EVP_PKEY *y;
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u8 Mx[DPP_MAX_SHARED_SECRET_LEN];
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u8 Nx[DPP_MAX_SHARED_SECRET_LEN];
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u8 z[DPP_MAX_HASH_LEN];
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EVP_PKEY *peer_bootstrap_key;
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struct wpabuf *exchange_req;
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struct wpabuf *exchange_resp;
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unsigned int t; /* number of failures on code use */
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unsigned int exch_req_wait_time;
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unsigned int exch_req_tries;
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unsigned int freq;
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};
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enum dpp_akm {
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DPP_AKM_UNKNOWN,
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DPP_AKM_DPP,
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DPP_AKM_PSK,
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DPP_AKM_SAE,
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DPP_AKM_PSK_SAE
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};
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struct dpp_configuration {
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u8 ssid[32];
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size_t ssid_len;
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enum dpp_akm akm;
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/* For DPP configuration (connector) */
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os_time_t netaccesskey_expiry;
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/* TODO: groups */
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char *group_id;
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/* For legacy configuration */
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char *passphrase;
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u8 psk[32];
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};
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struct dpp_authentication {
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void *msg_ctx;
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const struct dpp_curve_params *curve;
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struct dpp_bootstrap_info *peer_bi;
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struct dpp_bootstrap_info *own_bi;
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struct dpp_bootstrap_info *tmp_own_bi;
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u8 waiting_pubkey_hash[SHA256_MAC_LEN];
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int response_pending;
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enum dpp_status_error auth_resp_status;
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u8 peer_mac_addr[ETH_ALEN];
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u8 i_nonce[DPP_MAX_NONCE_LEN];
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u8 r_nonce[DPP_MAX_NONCE_LEN];
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u8 e_nonce[DPP_MAX_NONCE_LEN];
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u8 i_capab;
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u8 r_capab;
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EVP_PKEY *own_protocol_key;
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EVP_PKEY *peer_protocol_key;
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struct wpabuf *req_msg;
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struct wpabuf *resp_msg;
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/* Intersection of possible frequencies for initiating DPP
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* Authentication exchange */
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unsigned int freq[DPP_BOOTSTRAP_MAX_FREQ];
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unsigned int num_freq, freq_idx;
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unsigned int curr_freq;
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unsigned int neg_freq;
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unsigned int num_freq_iters;
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size_t secret_len;
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u8 Mx[DPP_MAX_SHARED_SECRET_LEN];
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size_t Mx_len;
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u8 Nx[DPP_MAX_SHARED_SECRET_LEN];
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size_t Nx_len;
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u8 Lx[DPP_MAX_SHARED_SECRET_LEN];
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size_t Lx_len;
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u8 k1[DPP_MAX_HASH_LEN];
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u8 k2[DPP_MAX_HASH_LEN];
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u8 ke[DPP_MAX_HASH_LEN];
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int initiator;
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int waiting_auth_resp;
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int waiting_auth_conf;
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int auth_req_ack;
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unsigned int auth_resp_tries;
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u8 allowed_roles;
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int configurator;
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int remove_on_tx_status;
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int auth_success;
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struct wpabuf *conf_req;
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const struct wpabuf *conf_resp; /* owned by GAS server */
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struct dpp_configuration *conf_ap;
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struct dpp_configuration *conf_sta;
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struct dpp_configurator *conf;
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char *connector; /* received signedConnector */
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u8 ssid[SSID_MAX_LEN];
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u8 ssid_len;
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char passphrase[64];
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u8 psk[PMK_LEN];
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int psk_set;
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enum dpp_akm akm;
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struct wpabuf *net_access_key;
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os_time_t net_access_key_expiry;
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struct wpabuf *c_sign_key;
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#ifdef CONFIG_TESTING_OPTIONS
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char *config_obj_override;
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char *discovery_override;
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char *groups_override;
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unsigned int ignore_netaccesskey_mismatch:1;
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#endif /* CONFIG_TESTING_OPTIONS */
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};
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struct dpp_configurator {
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struct dl_list list;
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unsigned int id;
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int own;
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EVP_PKEY *csign;
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char *kid;
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const struct dpp_curve_params *curve;
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};
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struct dpp_introduction {
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u8 pmkid[PMKID_LEN];
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u8 pmk[PMK_LEN_MAX];
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size_t pmk_len;
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};
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#ifdef CONFIG_TESTING_OPTIONS
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enum dpp_test_behavior {
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DPP_TEST_DISABLED = 0,
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DPP_TEST_AFTER_WRAPPED_DATA_AUTH_REQ = 1,
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DPP_TEST_AFTER_WRAPPED_DATA_AUTH_RESP = 2,
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DPP_TEST_AFTER_WRAPPED_DATA_AUTH_CONF = 3,
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DPP_TEST_AFTER_WRAPPED_DATA_PKEX_CR_REQ = 4,
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DPP_TEST_AFTER_WRAPPED_DATA_PKEX_CR_RESP = 5,
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DPP_TEST_AFTER_WRAPPED_DATA_CONF_REQ = 6,
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DPP_TEST_AFTER_WRAPPED_DATA_CONF_RESP = 7,
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DPP_TEST_ZERO_I_CAPAB = 8,
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DPP_TEST_ZERO_R_CAPAB = 9,
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DPP_TEST_NO_R_BOOTSTRAP_KEY_HASH_AUTH_REQ = 10,
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DPP_TEST_NO_I_BOOTSTRAP_KEY_HASH_AUTH_REQ = 11,
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DPP_TEST_NO_I_PROTO_KEY_AUTH_REQ = 12,
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DPP_TEST_NO_I_NONCE_AUTH_REQ = 13,
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DPP_TEST_NO_I_CAPAB_AUTH_REQ = 14,
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DPP_TEST_NO_WRAPPED_DATA_AUTH_REQ = 15,
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DPP_TEST_NO_STATUS_AUTH_RESP = 16,
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DPP_TEST_NO_R_BOOTSTRAP_KEY_HASH_AUTH_RESP = 17,
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DPP_TEST_NO_I_BOOTSTRAP_KEY_HASH_AUTH_RESP = 18,
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DPP_TEST_NO_R_PROTO_KEY_AUTH_RESP = 19,
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DPP_TEST_NO_R_NONCE_AUTH_RESP = 20,
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DPP_TEST_NO_I_NONCE_AUTH_RESP = 21,
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DPP_TEST_NO_R_CAPAB_AUTH_RESP = 22,
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DPP_TEST_NO_R_AUTH_AUTH_RESP = 23,
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DPP_TEST_NO_WRAPPED_DATA_AUTH_RESP = 24,
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DPP_TEST_NO_STATUS_AUTH_CONF = 25,
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DPP_TEST_NO_R_BOOTSTRAP_KEY_HASH_AUTH_CONF = 26,
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DPP_TEST_NO_I_BOOTSTRAP_KEY_HASH_AUTH_CONF = 27,
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DPP_TEST_NO_I_AUTH_AUTH_CONF = 28,
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DPP_TEST_NO_WRAPPED_DATA_AUTH_CONF = 29,
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DPP_TEST_I_NONCE_MISMATCH_AUTH_RESP = 30,
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DPP_TEST_INCOMPATIBLE_R_CAPAB_AUTH_RESP = 31,
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DPP_TEST_R_AUTH_MISMATCH_AUTH_RESP = 32,
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DPP_TEST_I_AUTH_MISMATCH_AUTH_CONF = 33,
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DPP_TEST_NO_FINITE_CYCLIC_GROUP_PKEX_EXCHANGE_REQ = 34,
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DPP_TEST_NO_ENCRYPTED_KEY_PKEX_EXCHANGE_REQ = 35,
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DPP_TEST_NO_STATUS_PKEX_EXCHANGE_RESP = 36,
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DPP_TEST_NO_ENCRYPTED_KEY_PKEX_EXCHANGE_RESP = 37,
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DPP_TEST_NO_BOOTSTRAP_KEY_PKEX_CR_REQ = 38,
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DPP_TEST_NO_I_AUTH_TAG_PKEX_CR_REQ = 39,
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DPP_TEST_NO_WRAPPED_DATA_PKEX_CR_REQ = 40,
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DPP_TEST_NO_BOOTSTRAP_KEY_PKEX_CR_RESP = 41,
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DPP_TEST_NO_R_AUTH_TAG_PKEX_CR_RESP = 42,
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DPP_TEST_NO_WRAPPED_DATA_PKEX_CR_RESP = 43,
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DPP_TEST_INVALID_ENCRYPTED_KEY_PKEX_EXCHANGE_REQ = 44,
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DPP_TEST_INVALID_ENCRYPTED_KEY_PKEX_EXCHANGE_RESP = 45,
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DPP_TEST_INVALID_STATUS_PKEX_EXCHANGE_RESP = 46,
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DPP_TEST_INVALID_BOOTSTRAP_KEY_PKEX_CR_REQ = 47,
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DPP_TEST_INVALID_BOOTSTRAP_KEY_PKEX_CR_RESP = 48,
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DPP_TEST_I_AUTH_TAG_MISMATCH_PKEX_CR_REQ = 49,
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DPP_TEST_R_AUTH_TAG_MISMATCH_PKEX_CR_RESP = 50,
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DPP_TEST_NO_E_NONCE_CONF_REQ = 51,
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DPP_TEST_NO_CONFIG_ATTR_OBJ_CONF_REQ = 52,
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DPP_TEST_NO_WRAPPED_DATA_CONF_REQ = 53,
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DPP_TEST_NO_E_NONCE_CONF_RESP = 54,
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DPP_TEST_NO_CONFIG_OBJ_CONF_RESP = 55,
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DPP_TEST_NO_STATUS_CONF_RESP = 56,
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DPP_TEST_NO_WRAPPED_DATA_CONF_RESP = 57,
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DPP_TEST_INVALID_STATUS_CONF_RESP = 58,
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DPP_TEST_E_NONCE_MISMATCH_CONF_RESP = 59,
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DPP_TEST_NO_TRANSACTION_ID_PEER_DISC_REQ = 60,
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DPP_TEST_NO_CONNECTOR_PEER_DISC_REQ = 61,
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DPP_TEST_NO_TRANSACTION_ID_PEER_DISC_RESP = 62,
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DPP_TEST_NO_STATUS_PEER_DISC_RESP = 63,
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DPP_TEST_NO_CONNECTOR_PEER_DISC_RESP = 64,
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DPP_TEST_AUTH_RESP_IN_PLACE_OF_CONF = 65,
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DPP_TEST_INVALID_I_PROTO_KEY_AUTH_REQ = 66,
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DPP_TEST_INVALID_R_PROTO_KEY_AUTH_RESP = 67,
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DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_AUTH_REQ = 68,
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DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_AUTH_REQ = 69,
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DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_AUTH_RESP = 70,
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DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_AUTH_RESP = 71,
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DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_AUTH_CONF = 72,
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DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_AUTH_CONF = 73,
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DPP_TEST_INVALID_STATUS_AUTH_RESP = 74,
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DPP_TEST_INVALID_STATUS_AUTH_CONF = 75,
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DPP_TEST_INVALID_CONFIG_ATTR_OBJ_CONF_REQ = 76,
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DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_RESP = 77,
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DPP_TEST_INVALID_STATUS_PEER_DISC_RESP = 78,
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DPP_TEST_INVALID_CONNECTOR_PEER_DISC_RESP = 79,
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DPP_TEST_INVALID_CONNECTOR_PEER_DISC_REQ = 80,
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DPP_TEST_INVALID_I_NONCE_AUTH_REQ = 81,
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DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_REQ = 82,
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DPP_TEST_INVALID_E_NONCE_CONF_REQ = 83,
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DPP_TEST_STOP_AT_PKEX_EXCHANGE_RESP = 84,
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DPP_TEST_STOP_AT_PKEX_CR_REQ = 85,
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DPP_TEST_STOP_AT_PKEX_CR_RESP = 86,
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DPP_TEST_STOP_AT_AUTH_REQ = 87,
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DPP_TEST_STOP_AT_AUTH_RESP = 88,
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DPP_TEST_STOP_AT_AUTH_CONF = 89,
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DPP_TEST_STOP_AT_CONF_REQ = 90,
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};
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extern enum dpp_test_behavior dpp_test;
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extern u8 dpp_pkex_own_mac_override[ETH_ALEN];
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extern u8 dpp_pkex_peer_mac_override[ETH_ALEN];
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extern u8 dpp_pkex_ephemeral_key_override[600];
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extern size_t dpp_pkex_ephemeral_key_override_len;
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extern u8 dpp_protocol_key_override[600];
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extern size_t dpp_protocol_key_override_len;
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extern u8 dpp_nonce_override[DPP_MAX_NONCE_LEN];
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extern size_t dpp_nonce_override_len;
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#endif /* CONFIG_TESTING_OPTIONS */
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void dpp_bootstrap_info_free(struct dpp_bootstrap_info *info);
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const char * dpp_bootstrap_type_txt(enum dpp_bootstrap_type type);
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int dpp_bootstrap_key_hash(struct dpp_bootstrap_info *bi);
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int dpp_parse_uri_chan_list(struct dpp_bootstrap_info *bi,
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const char *chan_list);
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int dpp_parse_uri_mac(struct dpp_bootstrap_info *bi, const char *mac);
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int dpp_parse_uri_info(struct dpp_bootstrap_info *bi, const char *info);
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struct dpp_bootstrap_info * dpp_parse_qr_code(const char *uri);
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char * dpp_keygen(struct dpp_bootstrap_info *bi, const char *curve,
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const u8 *privkey, size_t privkey_len);
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struct hostapd_hw_modes;
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struct dpp_authentication * dpp_auth_init(void *msg_ctx,
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struct dpp_bootstrap_info *peer_bi,
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struct dpp_bootstrap_info *own_bi,
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u8 dpp_allowed_roles,
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unsigned int neg_freq,
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struct hostapd_hw_modes *own_modes,
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u16 num_modes);
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struct dpp_authentication *
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dpp_auth_req_rx(void *msg_ctx, u8 dpp_allowed_roles, int qr_mutual,
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struct dpp_bootstrap_info *peer_bi,
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struct dpp_bootstrap_info *own_bi,
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unsigned int freq, const u8 *hdr, const u8 *attr_start,
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size_t attr_len);
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struct wpabuf *
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dpp_auth_resp_rx(struct dpp_authentication *auth, const u8 *hdr,
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const u8 *attr_start, size_t attr_len);
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struct wpabuf * dpp_build_conf_req(struct dpp_authentication *auth,
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const char *json);
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int dpp_auth_conf_rx(struct dpp_authentication *auth, const u8 *hdr,
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const u8 *attr_start, size_t attr_len);
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int dpp_notify_new_qr_code(struct dpp_authentication *auth,
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struct dpp_bootstrap_info *peer_bi);
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void dpp_configuration_free(struct dpp_configuration *conf);
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void dpp_auth_deinit(struct dpp_authentication *auth);
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struct wpabuf *
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dpp_conf_req_rx(struct dpp_authentication *auth, const u8 *attr_start,
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size_t attr_len);
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int dpp_conf_resp_rx(struct dpp_authentication *auth,
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const struct wpabuf *resp);
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struct wpabuf * dpp_alloc_msg(enum dpp_public_action_frame_type type,
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size_t len);
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const u8 * dpp_get_attr(const u8 *buf, size_t len, u16 req_id, u16 *ret_len);
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int dpp_check_attrs(const u8 *buf, size_t len);
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int dpp_key_expired(const char *timestamp, os_time_t *expiry);
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const char * dpp_akm_str(enum dpp_akm akm);
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int dpp_configurator_get_key(const struct dpp_configurator *conf, char *buf,
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size_t buflen);
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void dpp_configurator_free(struct dpp_configurator *conf);
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struct dpp_configurator *
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dpp_keygen_configurator(const char *curve, const u8 *privkey,
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size_t privkey_len);
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int dpp_configurator_own_config(struct dpp_authentication *auth,
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const char *curve, int ap);
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enum dpp_status_error
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dpp_peer_intro(struct dpp_introduction *intro, const char *own_connector,
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const u8 *net_access_key, size_t net_access_key_len,
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const u8 *csign_key, size_t csign_key_len,
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const u8 *peer_connector, size_t peer_connector_len,
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os_time_t *expiry);
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struct dpp_pkex * dpp_pkex_init(void *msg_ctx, struct dpp_bootstrap_info *bi,
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const u8 *own_mac,
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const char *identifier,
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const char *code);
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struct dpp_pkex * dpp_pkex_rx_exchange_req(void *msg_ctx,
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struct dpp_bootstrap_info *bi,
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const u8 *own_mac,
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const u8 *peer_mac,
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const char *identifier,
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const char *code,
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const u8 *buf, size_t len);
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struct wpabuf * dpp_pkex_rx_exchange_resp(struct dpp_pkex *pkex,
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const u8 *peer_mac,
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const u8 *buf, size_t len);
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struct wpabuf * dpp_pkex_rx_commit_reveal_req(struct dpp_pkex *pkex,
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const u8 *hdr,
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const u8 *buf, size_t len);
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int dpp_pkex_rx_commit_reveal_resp(struct dpp_pkex *pkex, const u8 *hdr,
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const u8 *buf, size_t len);
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void dpp_pkex_free(struct dpp_pkex *pkex);
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char * dpp_corrupt_connector_signature(const char *connector);
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#endif /* DPP_H */
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