contrib/wpa/src/common/dpp.h

   1 /*
   2  * DPP functionality shared between hostapd and wpa_supplicant
   3  * Copyright (c) 2017, Qualcomm Atheros, Inc.
   4  * Copyright (c) 2018-2019, The Linux Foundation
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #ifndef DPP_H
  11 #define DPP_H
  12
  13 #ifdef CONFIG_DPP
  14 #include <openssl/x509.h>
  15
  16 #include "utils/list.h"
  17 #include "common/wpa_common.h"
  18 #include "crypto/sha256.h"
  19
  20 struct crypto_ecdh;
  21 struct dpp_global;
  22
  23 #define DPP_HDR_LEN (4 + 2) /* OUI, OUI Type, Crypto Suite, DPP frame type */
  24
  25 enum dpp_public_action_frame_type {
  26         DPP_PA_AUTHENTICATION_REQ = 0,
  27         DPP_PA_AUTHENTICATION_RESP = 1,
  28         DPP_PA_AUTHENTICATION_CONF = 2,
  29         DPP_PA_PEER_DISCOVERY_REQ = 5,
  30         DPP_PA_PEER_DISCOVERY_RESP = 6,
  31         DPP_PA_PKEX_EXCHANGE_REQ = 7,
  32         DPP_PA_PKEX_EXCHANGE_RESP = 8,
  33         DPP_PA_PKEX_COMMIT_REVEAL_REQ = 9,
  34         DPP_PA_PKEX_COMMIT_REVEAL_RESP = 10,
  35         DPP_PA_CONFIGURATION_RESULT = 11,
  36 };
  37
  38 enum dpp_attribute_id {
  39         DPP_ATTR_STATUS = 0x1000,
  40         DPP_ATTR_I_BOOTSTRAP_KEY_HASH = 0x1001,
  41         DPP_ATTR_R_BOOTSTRAP_KEY_HASH = 0x1002,
  42         DPP_ATTR_I_PROTOCOL_KEY = 0x1003,
  43         DPP_ATTR_WRAPPED_DATA = 0x1004,
  44         DPP_ATTR_I_NONCE = 0x1005,
  45         DPP_ATTR_I_CAPABILITIES = 0x1006,
  46         DPP_ATTR_R_NONCE = 0x1007,
  47         DPP_ATTR_R_CAPABILITIES = 0x1008,
  48         DPP_ATTR_R_PROTOCOL_KEY = 0x1009,
  49         DPP_ATTR_I_AUTH_TAG = 0x100A,
  50         DPP_ATTR_R_AUTH_TAG = 0x100B,
  51         DPP_ATTR_CONFIG_OBJ = 0x100C,
  52         DPP_ATTR_CONNECTOR = 0x100D,
  53         DPP_ATTR_CONFIG_ATTR_OBJ = 0x100E,
  54         DPP_ATTR_BOOTSTRAP_KEY = 0x100F,
  55         DPP_ATTR_OWN_NET_NK_HASH = 0x1011,
  56         DPP_ATTR_FINITE_CYCLIC_GROUP = 0x1012,
  57         DPP_ATTR_ENCRYPTED_KEY = 0x1013,
  58         DPP_ATTR_ENROLLEE_NONCE = 0x1014,
  59         DPP_ATTR_CODE_IDENTIFIER = 0x1015,
  60         DPP_ATTR_TRANSACTION_ID = 0x1016,
  61         DPP_ATTR_BOOTSTRAP_INFO = 0x1017,
  62         DPP_ATTR_CHANNEL = 0x1018,
  63         DPP_ATTR_PROTOCOL_VERSION = 0x1019,
  64         DPP_ATTR_ENVELOPED_DATA = 0x101A,
  65 };
  66
  67 enum dpp_status_error {
  68         DPP_STATUS_OK = 0,
  69         DPP_STATUS_NOT_COMPATIBLE = 1,
  70         DPP_STATUS_AUTH_FAILURE = 2,
  71         DPP_STATUS_UNWRAP_FAILURE = 3,
  72         DPP_STATUS_BAD_GROUP = 4,
  73         DPP_STATUS_CONFIGURE_FAILURE = 5,
  74         DPP_STATUS_RESPONSE_PENDING = 6,
  75         DPP_STATUS_INVALID_CONNECTOR = 7,
  76         DPP_STATUS_NO_MATCH = 8,
  77         DPP_STATUS_CONFIG_REJECTED = 9,
  78 };
  79
  80 #define DPP_CAPAB_ENROLLEE BIT(0)
  81 #define DPP_CAPAB_CONFIGURATOR BIT(1)
  82 #define DPP_CAPAB_ROLE_MASK (BIT(0) | BIT(1))
  83
  84 #define DPP_BOOTSTRAP_MAX_FREQ 30
  85 #define DPP_MAX_NONCE_LEN 32
  86 #define DPP_MAX_HASH_LEN 64
  87 #define DPP_MAX_SHARED_SECRET_LEN 66
  88
  89 struct dpp_curve_params {
  90         const char *name;
  91         size_t hash_len;
  92         size_t aes_siv_key_len;
  93         size_t nonce_len;
  94         size_t prime_len;
  95         const char *jwk_crv;
  96         u16 ike_group;
  97         const char *jws_alg;
  98 };
  99
 100 enum dpp_bootstrap_type {
 101         DPP_BOOTSTRAP_QR_CODE,
 102         DPP_BOOTSTRAP_PKEX,
 103 };
 104
 105 struct dpp_bootstrap_info {
 106         struct dl_list list;
 107         unsigned int id;
 108         enum dpp_bootstrap_type type;
 109         char *uri;
 110         u8 mac_addr[ETH_ALEN];
 111         char *info;
 112         unsigned int freq[DPP_BOOTSTRAP_MAX_FREQ];
 113         unsigned int num_freq;
 114         int own;
 115         EVP_PKEY *pubkey;
 116         u8 pubkey_hash[SHA256_MAC_LEN];
 117         const struct dpp_curve_params *curve;
 118         unsigned int pkex_t; /* number of failures before dpp_pkex
 119                               * instantiation */
 120 };
 121
 122 #define PKEX_COUNTER_T_LIMIT 5
 123
 124 struct dpp_pkex {
 125         void *msg_ctx;
 126         unsigned int initiator:1;
 127         unsigned int exchange_done:1;
 128         unsigned int failed:1;
 129         struct dpp_bootstrap_info *own_bi;
 130         u8 own_mac[ETH_ALEN];
 131         u8 peer_mac[ETH_ALEN];
 132         char *identifier;
 133         char *code;
 134         EVP_PKEY *x;
 135         EVP_PKEY *y;
 136         u8 Mx[DPP_MAX_SHARED_SECRET_LEN];
 137         u8 Nx[DPP_MAX_SHARED_SECRET_LEN];
 138         u8 z[DPP_MAX_HASH_LEN];
 139         EVP_PKEY *peer_bootstrap_key;
 140         struct wpabuf *exchange_req;
 141         struct wpabuf *exchange_resp;
 142         unsigned int t; /* number of failures on code use */
 143         unsigned int exch_req_wait_time;
 144         unsigned int exch_req_tries;
 145         unsigned int freq;
 146 };
 147
 148 enum dpp_akm {
 149         DPP_AKM_UNKNOWN,
 150         DPP_AKM_DPP,
 151         DPP_AKM_PSK,
 152         DPP_AKM_SAE,
 153         DPP_AKM_PSK_SAE,
 154         DPP_AKM_SAE_DPP,
 155         DPP_AKM_PSK_SAE_DPP,
 156 };
 157
 158 struct dpp_configuration {
 159         u8 ssid[32];
 160         size_t ssid_len;
 161         enum dpp_akm akm;
 162
 163         /* For DPP configuration (connector) */
 164         os_time_t netaccesskey_expiry;
 165
 166         /* TODO: groups */
 167         char *group_id;
 168
 169         /* For legacy configuration */
 170         char *passphrase;
 171         u8 psk[32];
 172         int psk_set;
 173 };
 174
 175 struct dpp_authentication {
 176         void *msg_ctx;
 177         u8 peer_version;
 178         const struct dpp_curve_params *curve;
 179         struct dpp_bootstrap_info *peer_bi;
 180         struct dpp_bootstrap_info *own_bi;
 181         struct dpp_bootstrap_info *tmp_own_bi;
 182         u8 waiting_pubkey_hash[SHA256_MAC_LEN];
 183         int response_pending;
 184         enum dpp_status_error auth_resp_status;
 185         enum dpp_status_error conf_resp_status;
 186         u8 peer_mac_addr[ETH_ALEN];
 187         u8 i_nonce[DPP_MAX_NONCE_LEN];
 188         u8 r_nonce[DPP_MAX_NONCE_LEN];
 189         u8 e_nonce[DPP_MAX_NONCE_LEN];
 190         u8 i_capab;
 191         u8 r_capab;
 192         EVP_PKEY *own_protocol_key;
 193         EVP_PKEY *peer_protocol_key;
 194         struct wpabuf *req_msg;
 195         struct wpabuf *resp_msg;
 196         /* Intersection of possible frequencies for initiating DPP
 197          * Authentication exchange */
 198         unsigned int freq[DPP_BOOTSTRAP_MAX_FREQ];
 199         unsigned int num_freq, freq_idx;
 200         unsigned int curr_freq;
 201         unsigned int neg_freq;
 202         unsigned int num_freq_iters;
 203         size_t secret_len;
 204         u8 Mx[DPP_MAX_SHARED_SECRET_LEN];
 205         size_t Mx_len;
 206         u8 Nx[DPP_MAX_SHARED_SECRET_LEN];
 207         size_t Nx_len;
 208         u8 Lx[DPP_MAX_SHARED_SECRET_LEN];
 209         size_t Lx_len;
 210         u8 k1[DPP_MAX_HASH_LEN];
 211         u8 k2[DPP_MAX_HASH_LEN];
 212         u8 ke[DPP_MAX_HASH_LEN];
 213         int initiator;
 214         int waiting_auth_resp;
 215         int waiting_auth_conf;
 216         int auth_req_ack;
 217         unsigned int auth_resp_tries;
 218         u8 allowed_roles;
 219         int configurator;
 220         int remove_on_tx_status;
 221         int connect_on_tx_status;
 222         int waiting_conf_result;
 223         int auth_success;
 224         struct wpabuf *conf_req;
 225         const struct wpabuf *conf_resp; /* owned by GAS server */
 226         struct dpp_configuration *conf_ap;
 227         struct dpp_configuration *conf_sta;
 228         struct dpp_configurator *conf;
 229         char *connector; /* received signedConnector */
 230         u8 ssid[SSID_MAX_LEN];
 231         u8 ssid_len;
 232         char passphrase[64];
 233         u8 psk[PMK_LEN];
 234         int psk_set;
 235         enum dpp_akm akm;
 236         struct wpabuf *net_access_key;
 237         os_time_t net_access_key_expiry;
 238         struct wpabuf *c_sign_key;
 239 #ifdef CONFIG_TESTING_OPTIONS
 240         char *config_obj_override;
 241         char *discovery_override;
 242         char *groups_override;
 243         unsigned int ignore_netaccesskey_mismatch:1;
 244 #endif /* CONFIG_TESTING_OPTIONS */
 245 };
 246
 247 struct dpp_configurator {
 248         struct dl_list list;
 249         unsigned int id;
 250         int own;
 251         EVP_PKEY *csign;
 252         char *kid;
 253         const struct dpp_curve_params *curve;
 254 };
 255
 256 struct dpp_introduction {
 257         u8 pmkid[PMKID_LEN];
 258         u8 pmk[PMK_LEN_MAX];
 259         size_t pmk_len;
 260 };
 261
 262 #ifdef CONFIG_TESTING_OPTIONS
 263 enum dpp_test_behavior {
 264         DPP_TEST_DISABLED = 0,
 265         DPP_TEST_AFTER_WRAPPED_DATA_AUTH_REQ = 1,
 266         DPP_TEST_AFTER_WRAPPED_DATA_AUTH_RESP = 2,
 267         DPP_TEST_AFTER_WRAPPED_DATA_AUTH_CONF = 3,
 268         DPP_TEST_AFTER_WRAPPED_DATA_PKEX_CR_REQ = 4,
 269         DPP_TEST_AFTER_WRAPPED_DATA_PKEX_CR_RESP = 5,
 270         DPP_TEST_AFTER_WRAPPED_DATA_CONF_REQ = 6,
 271         DPP_TEST_AFTER_WRAPPED_DATA_CONF_RESP = 7,
 272         DPP_TEST_ZERO_I_CAPAB = 8,
 273         DPP_TEST_ZERO_R_CAPAB = 9,
 274         DPP_TEST_NO_R_BOOTSTRAP_KEY_HASH_AUTH_REQ = 10,
 275         DPP_TEST_NO_I_BOOTSTRAP_KEY_HASH_AUTH_REQ = 11,
 276         DPP_TEST_NO_I_PROTO_KEY_AUTH_REQ = 12,
 277         DPP_TEST_NO_I_NONCE_AUTH_REQ = 13,
 278         DPP_TEST_NO_I_CAPAB_AUTH_REQ = 14,
 279         DPP_TEST_NO_WRAPPED_DATA_AUTH_REQ = 15,
 280         DPP_TEST_NO_STATUS_AUTH_RESP = 16,
 281         DPP_TEST_NO_R_BOOTSTRAP_KEY_HASH_AUTH_RESP = 17,
 282         DPP_TEST_NO_I_BOOTSTRAP_KEY_HASH_AUTH_RESP = 18,
 283         DPP_TEST_NO_R_PROTO_KEY_AUTH_RESP = 19,
 284         DPP_TEST_NO_R_NONCE_AUTH_RESP = 20,
 285         DPP_TEST_NO_I_NONCE_AUTH_RESP = 21,
 286         DPP_TEST_NO_R_CAPAB_AUTH_RESP = 22,
 287         DPP_TEST_NO_R_AUTH_AUTH_RESP = 23,
 288         DPP_TEST_NO_WRAPPED_DATA_AUTH_RESP = 24,
 289         DPP_TEST_NO_STATUS_AUTH_CONF = 25,
 290         DPP_TEST_NO_R_BOOTSTRAP_KEY_HASH_AUTH_CONF = 26,
 291         DPP_TEST_NO_I_BOOTSTRAP_KEY_HASH_AUTH_CONF = 27,
 292         DPP_TEST_NO_I_AUTH_AUTH_CONF = 28,
 293         DPP_TEST_NO_WRAPPED_DATA_AUTH_CONF = 29,
 294         DPP_TEST_I_NONCE_MISMATCH_AUTH_RESP = 30,
 295         DPP_TEST_INCOMPATIBLE_R_CAPAB_AUTH_RESP = 31,
 296         DPP_TEST_R_AUTH_MISMATCH_AUTH_RESP = 32,
 297         DPP_TEST_I_AUTH_MISMATCH_AUTH_CONF = 33,
 298         DPP_TEST_NO_FINITE_CYCLIC_GROUP_PKEX_EXCHANGE_REQ = 34,
 299         DPP_TEST_NO_ENCRYPTED_KEY_PKEX_EXCHANGE_REQ = 35,
 300         DPP_TEST_NO_STATUS_PKEX_EXCHANGE_RESP = 36,
 301         DPP_TEST_NO_ENCRYPTED_KEY_PKEX_EXCHANGE_RESP = 37,
 302         DPP_TEST_NO_BOOTSTRAP_KEY_PKEX_CR_REQ = 38,
 303         DPP_TEST_NO_I_AUTH_TAG_PKEX_CR_REQ = 39,
 304         DPP_TEST_NO_WRAPPED_DATA_PKEX_CR_REQ = 40,
 305         DPP_TEST_NO_BOOTSTRAP_KEY_PKEX_CR_RESP = 41,
 306         DPP_TEST_NO_R_AUTH_TAG_PKEX_CR_RESP = 42,
 307         DPP_TEST_NO_WRAPPED_DATA_PKEX_CR_RESP = 43,
 308         DPP_TEST_INVALID_ENCRYPTED_KEY_PKEX_EXCHANGE_REQ = 44,
 309         DPP_TEST_INVALID_ENCRYPTED_KEY_PKEX_EXCHANGE_RESP = 45,
 310         DPP_TEST_INVALID_STATUS_PKEX_EXCHANGE_RESP = 46,
 311         DPP_TEST_INVALID_BOOTSTRAP_KEY_PKEX_CR_REQ = 47,
 312         DPP_TEST_INVALID_BOOTSTRAP_KEY_PKEX_CR_RESP = 48,
 313         DPP_TEST_I_AUTH_TAG_MISMATCH_PKEX_CR_REQ = 49,
 314         DPP_TEST_R_AUTH_TAG_MISMATCH_PKEX_CR_RESP = 50,
 315         DPP_TEST_NO_E_NONCE_CONF_REQ = 51,
 316         DPP_TEST_NO_CONFIG_ATTR_OBJ_CONF_REQ = 52,
 317         DPP_TEST_NO_WRAPPED_DATA_CONF_REQ = 53,
 318         DPP_TEST_NO_E_NONCE_CONF_RESP = 54,
 319         DPP_TEST_NO_CONFIG_OBJ_CONF_RESP = 55,
 320         DPP_TEST_NO_STATUS_CONF_RESP = 56,
 321         DPP_TEST_NO_WRAPPED_DATA_CONF_RESP = 57,
 322         DPP_TEST_INVALID_STATUS_CONF_RESP = 58,
 323         DPP_TEST_E_NONCE_MISMATCH_CONF_RESP = 59,
 324         DPP_TEST_NO_TRANSACTION_ID_PEER_DISC_REQ = 60,
 325         DPP_TEST_NO_CONNECTOR_PEER_DISC_REQ = 61,
 326         DPP_TEST_NO_TRANSACTION_ID_PEER_DISC_RESP = 62,
 327         DPP_TEST_NO_STATUS_PEER_DISC_RESP = 63,
 328         DPP_TEST_NO_CONNECTOR_PEER_DISC_RESP = 64,
 329         DPP_TEST_AUTH_RESP_IN_PLACE_OF_CONF = 65,
 330         DPP_TEST_INVALID_I_PROTO_KEY_AUTH_REQ = 66,
 331         DPP_TEST_INVALID_R_PROTO_KEY_AUTH_RESP = 67,
 332         DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_AUTH_REQ = 68,
 333         DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_AUTH_REQ = 69,
 334         DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_AUTH_RESP = 70,
 335         DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_AUTH_RESP = 71,
 336         DPP_TEST_INVALID_R_BOOTSTRAP_KEY_HASH_AUTH_CONF = 72,
 337         DPP_TEST_INVALID_I_BOOTSTRAP_KEY_HASH_AUTH_CONF = 73,
 338         DPP_TEST_INVALID_STATUS_AUTH_RESP = 74,
 339         DPP_TEST_INVALID_STATUS_AUTH_CONF = 75,
 340         DPP_TEST_INVALID_CONFIG_ATTR_OBJ_CONF_REQ = 76,
 341         DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_RESP = 77,
 342         DPP_TEST_INVALID_STATUS_PEER_DISC_RESP = 78,
 343         DPP_TEST_INVALID_CONNECTOR_PEER_DISC_RESP = 79,
 344         DPP_TEST_INVALID_CONNECTOR_PEER_DISC_REQ = 80,
 345         DPP_TEST_INVALID_I_NONCE_AUTH_REQ = 81,
 346         DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_REQ = 82,
 347         DPP_TEST_INVALID_E_NONCE_CONF_REQ = 83,
 348         DPP_TEST_STOP_AT_PKEX_EXCHANGE_RESP = 84,
 349         DPP_TEST_STOP_AT_PKEX_CR_REQ = 85,
 350         DPP_TEST_STOP_AT_PKEX_CR_RESP = 86,
 351         DPP_TEST_STOP_AT_AUTH_REQ = 87,
 352         DPP_TEST_STOP_AT_AUTH_RESP = 88,
 353         DPP_TEST_STOP_AT_AUTH_CONF = 89,
 354         DPP_TEST_STOP_AT_CONF_REQ = 90,
 355         DPP_TEST_REJECT_CONFIG = 91,
 356 };
 357
 358 extern enum dpp_test_behavior dpp_test;
 359 extern u8 dpp_pkex_own_mac_override[ETH_ALEN];
 360 extern u8 dpp_pkex_peer_mac_override[ETH_ALEN];
 361 extern u8 dpp_pkex_ephemeral_key_override[600];
 362 extern size_t dpp_pkex_ephemeral_key_override_len;
 363 extern u8 dpp_protocol_key_override[600];
 364 extern size_t dpp_protocol_key_override_len;
 365 extern u8 dpp_nonce_override[DPP_MAX_NONCE_LEN];
 366 extern size_t dpp_nonce_override_len;
 367 #endif /* CONFIG_TESTING_OPTIONS */
 368
 369 void dpp_bootstrap_info_free(struct dpp_bootstrap_info *info);
 370 const char * dpp_bootstrap_type_txt(enum dpp_bootstrap_type type);
 371 int dpp_bootstrap_key_hash(struct dpp_bootstrap_info *bi);
 372 int dpp_parse_uri_chan_list(struct dpp_bootstrap_info *bi,
 373                             const char *chan_list);
 374 int dpp_parse_uri_mac(struct dpp_bootstrap_info *bi, const char *mac);
 375 int dpp_parse_uri_info(struct dpp_bootstrap_info *bi, const char *info);
 376 struct dpp_bootstrap_info * dpp_parse_qr_code(const char *uri);
 377 char * dpp_keygen(struct dpp_bootstrap_info *bi, const char *curve,
 378                   const u8 *privkey, size_t privkey_len);
 379 struct hostapd_hw_modes;
 380 struct dpp_authentication * dpp_auth_init(void *msg_ctx,
 381                                           struct dpp_bootstrap_info *peer_bi,
 382                                           struct dpp_bootstrap_info *own_bi,
 383                                           u8 dpp_allowed_roles,
 384                                           unsigned int neg_freq,
 385                                           struct hostapd_hw_modes *own_modes,
 386                                           u16 num_modes);
 387 struct dpp_authentication *
 388 dpp_auth_req_rx(void *msg_ctx, u8 dpp_allowed_roles, int qr_mutual,
 389                 struct dpp_bootstrap_info *peer_bi,
 390                 struct dpp_bootstrap_info *own_bi,
 391                 unsigned int freq, const u8 *hdr, const u8 *attr_start,
 392                 size_t attr_len);
 393 struct wpabuf *
 394 dpp_auth_resp_rx(struct dpp_authentication *auth, const u8 *hdr,
 395                  const u8 *attr_start, size_t attr_len);
 396 struct wpabuf * dpp_build_conf_req(struct dpp_authentication *auth,
 397                                    const char *json);
 398 int dpp_auth_conf_rx(struct dpp_authentication *auth, const u8 *hdr,
 399                      const u8 *attr_start, size_t attr_len);
 400 int dpp_notify_new_qr_code(struct dpp_authentication *auth,
 401                            struct dpp_bootstrap_info *peer_bi);
 402 struct dpp_configuration * dpp_configuration_alloc(const char *type);
 403 int dpp_akm_psk(enum dpp_akm akm);
 404 int dpp_akm_sae(enum dpp_akm akm);
 405 int dpp_akm_legacy(enum dpp_akm akm);
 406 int dpp_akm_dpp(enum dpp_akm akm);
 407 int dpp_akm_ver2(enum dpp_akm akm);
 408 int dpp_configuration_valid(const struct dpp_configuration *conf);
 409 void dpp_configuration_free(struct dpp_configuration *conf);
 410 int dpp_set_configurator(struct dpp_global *dpp, void *msg_ctx,
 411                          struct dpp_authentication *auth,
 412                          const char *cmd);
 413 void dpp_auth_deinit(struct dpp_authentication *auth);
 414 struct wpabuf *
 415 dpp_conf_req_rx(struct dpp_authentication *auth, const u8 *attr_start,
 416                 size_t attr_len);
 417 int dpp_conf_resp_rx(struct dpp_authentication *auth,
 418                      const struct wpabuf *resp);
 419 enum dpp_status_error dpp_conf_result_rx(struct dpp_authentication *auth,
 420                                          const u8 *hdr,
 421                                          const u8 *attr_start, size_t attr_len);
 422 struct wpabuf * dpp_build_conf_result(struct dpp_authentication *auth,
 423                                       enum dpp_status_error status);
 424 struct wpabuf * dpp_alloc_msg(enum dpp_public_action_frame_type type,
 425                               size_t len);
 426 const u8 * dpp_get_attr(const u8 *buf, size_t len, u16 req_id, u16 *ret_len);
 427 int dpp_check_attrs(const u8 *buf, size_t len);
 428 int dpp_key_expired(const char *timestamp, os_time_t *expiry);
 429 const char * dpp_akm_str(enum dpp_akm akm);
 430 int dpp_configurator_get_key(const struct dpp_configurator *conf, char *buf,
 431                              size_t buflen);
 432 void dpp_configurator_free(struct dpp_configurator *conf);
 433 struct dpp_configurator *
 434 dpp_keygen_configurator(const char *curve, const u8 *privkey,
 435                         size_t privkey_len);
 436 int dpp_configurator_own_config(struct dpp_authentication *auth,
 437                                 const char *curve, int ap);
 438 enum dpp_status_error
 439 dpp_peer_intro(struct dpp_introduction *intro, const char *own_connector,
 440                const u8 *net_access_key, size_t net_access_key_len,
 441                const u8 *csign_key, size_t csign_key_len,
 442                const u8 *peer_connector, size_t peer_connector_len,
 443                os_time_t *expiry);
 444 struct dpp_pkex * dpp_pkex_init(void *msg_ctx, struct dpp_bootstrap_info *bi,
 445                                 const u8 *own_mac,
 446                                 const char *identifier,
 447                                 const char *code);
 448 struct dpp_pkex * dpp_pkex_rx_exchange_req(void *msg_ctx,
 449                                            struct dpp_bootstrap_info *bi,
 450                                            const u8 *own_mac,
 451                                            const u8 *peer_mac,
 452                                            const char *identifier,
 453                                            const char *code,
 454                                            const u8 *buf, size_t len);
 455 struct wpabuf * dpp_pkex_rx_exchange_resp(struct dpp_pkex *pkex,
 456                                           const u8 *peer_mac,
 457                                           const u8 *buf, size_t len);
 458 struct wpabuf * dpp_pkex_rx_commit_reveal_req(struct dpp_pkex *pkex,
 459                                               const u8 *hdr,
 460                                               const u8 *buf, size_t len);
 461 int dpp_pkex_rx_commit_reveal_resp(struct dpp_pkex *pkex, const u8 *hdr,
 462                                    const u8 *buf, size_t len);
 463 void dpp_pkex_free(struct dpp_pkex *pkex);
 464
 465 char * dpp_corrupt_connector_signature(const char *connector);
 466
 467
 468 struct dpp_pfs {
 469         struct crypto_ecdh *ecdh;
 470         const struct dpp_curve_params *curve;
 471         struct wpabuf *ie;
 472         struct wpabuf *secret;
 473 };
 474
 475 struct dpp_pfs * dpp_pfs_init(const u8 *net_access_key,
 476                               size_t net_access_key_len);
 477 int dpp_pfs_process(struct dpp_pfs *pfs, const u8 *peer_ie, size_t peer_ie_len);
 478 void dpp_pfs_free(struct dpp_pfs *pfs);
 479
 480 struct dpp_bootstrap_info * dpp_add_qr_code(struct dpp_global *dpp,
 481                                             const char *uri);
 482 int dpp_bootstrap_gen(struct dpp_global *dpp, const char *cmd);
 483 struct dpp_bootstrap_info *
 484 dpp_bootstrap_get_id(struct dpp_global *dpp, unsigned int id);
 485 int dpp_bootstrap_remove(struct dpp_global *dpp, const char *id);
 486 struct dpp_bootstrap_info *
 487 dpp_pkex_finish(struct dpp_global *dpp, struct dpp_pkex *pkex, const u8 *peer,
 488                 unsigned int freq);
 489 const char * dpp_bootstrap_get_uri(struct dpp_global *dpp, unsigned int id);
 490 int dpp_bootstrap_info(struct dpp_global *dpp, int id,
 491                        char *reply, int reply_size);
 492 void dpp_bootstrap_find_pair(struct dpp_global *dpp, const u8 *i_bootstrap,
 493                              const u8 *r_bootstrap,
 494                              struct dpp_bootstrap_info **own_bi,
 495                              struct dpp_bootstrap_info **peer_bi);
 496 int dpp_configurator_add(struct dpp_global *dpp, const char *cmd);
 497 int dpp_configurator_remove(struct dpp_global *dpp, const char *id);
 498 int dpp_configurator_get_key_id(struct dpp_global *dpp, unsigned int id,
 499                                 char *buf, size_t buflen);
 500 struct dpp_global * dpp_global_init(void);
 501 void dpp_global_clear(struct dpp_global *dpp);
 502 void dpp_global_deinit(struct dpp_global *dpp);
 503
 504 #endif /* CONFIG_DPP */
 505 #endif /* DPP_H */