mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2025-11-04 00:37:22 +01:00
986f66a3c6
This removes the authenticator bit in eapol_sm as well as unifies eapol_register_authenticator and eapol_register. Taking advantage of the handshake state authenticator bit we no longer have a need for 2 separate register functions. ap, and adhoc were also updated to set the authenticator bit in the handshake and only use eapol_register to register their sm's. netdev was updated to use the authenticator bit when choosing the correct key address for adhoc.
218 lines
7.1 KiB
C
218 lines
7.1 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2014 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <asm/byteorder.h>
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#include <linux/types.h>
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enum eapol_protocol_version {
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EAPOL_PROTOCOL_VERSION_2001 = 1,
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EAPOL_PROTOCOL_VERSION_2004 = 2,
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};
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/*
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* 802.1X-2010: Table 11-5—Descriptor Type value assignments
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* The WPA key type of 254 comes from somewhere else. Seems it is a legacy
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* value that might still be used by older implementations
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*/
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enum eapol_descriptor_type {
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EAPOL_DESCRIPTOR_TYPE_RC4 = 1,
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EAPOL_DESCRIPTOR_TYPE_80211 = 2,
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EAPOL_DESCRIPTOR_TYPE_WPA = 254,
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};
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enum eapol_key_descriptor_version {
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EAPOL_KEY_DESCRIPTOR_VERSION_AKM_DEFINED = 0,
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EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_MD5_ARC4 = 1,
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EAPOL_KEY_DESCRIPTOR_VERSION_HMAC_SHA1_AES = 2,
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EAPOL_KEY_DESCRIPTOR_VERSION_AES_128_CMAC_AES = 3,
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};
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struct eapol_sm;
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struct handshake_state;
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struct preauth_sm;
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enum handshake_kde;
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enum ie_rsn_akm_suite;
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struct eapol_header {
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uint8_t protocol_version;
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uint8_t packet_type;
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__be16 packet_len;
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} __attribute__ ((packed));
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struct eapol_frame {
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struct eapol_header header;
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uint8_t data[0];
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} __attribute__ ((packed));
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struct eapol_key {
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struct eapol_header header;
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uint8_t descriptor_type;
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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bool key_mic:1;
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bool secure:1;
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bool error:1;
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bool request:1;
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bool encrypted_key_data:1;
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bool smk_message:1;
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uint8_t reserved2:2;
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uint8_t key_descriptor_version:3;
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bool key_type:1;
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uint8_t wpa_key_id:2; /* Bits 4-5 reserved in RSN, Key ID in WPA */
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bool install:1;
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bool key_ack:1;
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#elif defined (__BIG_ENDIAN_BITFIELD)
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uint8_t reserved2:2;
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bool smk_message:1;
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bool encrypted_key_data:1;
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bool request:1;
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bool error:1;
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bool secure:1;
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bool key_mic:1;
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bool key_ack:1;
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bool install:1;
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uint8_t wpa_key_id:2; /* Bits 4-5 reserved in RSN, Key ID in WPA */
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bool key_type:1;
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uint8_t key_descriptor_version:3;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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__be16 key_length;
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__be64 key_replay_counter;
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uint8_t key_nonce[32];
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uint8_t eapol_key_iv[16];
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uint8_t key_rsc[8];
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uint8_t reserved[8];
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uint8_t key_mic_data[16];
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__be16 key_data_len;
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uint8_t key_data[0];
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} __attribute__ ((packed));
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typedef int (*eapol_tx_packet_func_t)(uint32_t ifindex,
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const uint8_t *dest, uint16_t proto,
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const struct eapol_frame *ef,
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bool noencrypt,
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void *user_data);
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typedef void (*eapol_rekey_offload_func_t)(uint32_t ifindex,
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const uint8_t *kek,
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const uint8_t *kck,
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uint64_t replay_counter,
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void *user_data);
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typedef void (*eapol_sm_event_func_t)(unsigned int event,
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const void *event_data,
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void *user_data);
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typedef void (*eapol_preauth_cb_t)(const uint8_t *pmk, void *user_data);
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typedef void (*eapol_preauth_destroy_func_t)(void *user_data);
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typedef void (*eapol_frame_watch_func_t)(uint16_t proto, const uint8_t *from,
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const struct eapol_frame *frame,
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void *user_data);
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bool eapol_calculate_mic(enum ie_rsn_akm_suite akm, const uint8_t *kck,
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const struct eapol_key *frame, uint8_t *mic);
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bool eapol_verify_mic(enum ie_rsn_akm_suite akm, const uint8_t *kck,
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const struct eapol_key *frame);
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uint8_t *eapol_decrypt_key_data(enum ie_rsn_akm_suite akm, const uint8_t *kek,
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const struct eapol_key *frame,
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size_t *decrypted_size);
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bool eapol_encrypt_key_data(const uint8_t *kek, uint8_t *key_data,
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size_t key_data_len,
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struct eapol_key *out_frame);
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void eapol_key_data_append(struct eapol_key *ek, enum handshake_kde selector,
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const uint8_t *data, size_t data_len);
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const struct eapol_key *eapol_key_validate(const uint8_t *frame, size_t len);
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bool eapol_verify_ptk_1_of_4(const struct eapol_key *ek);
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bool eapol_verify_ptk_2_of_4(const struct eapol_key *ek);
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bool eapol_verify_ptk_3_of_4(const struct eapol_key *ek, bool is_wpa);
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bool eapol_verify_ptk_4_of_4(const struct eapol_key *ek, bool is_wpa);
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bool eapol_verify_gtk_1_of_2(const struct eapol_key *ek, bool is_wpa);
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bool eapol_verify_gtk_2_of_2(const struct eapol_key *ek, bool is_wpa);
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struct eapol_key *eapol_create_ptk_2_of_4(
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enum eapol_protocol_version protocol,
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enum eapol_key_descriptor_version version,
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uint64_t key_replay_counter,
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const uint8_t snonce[],
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size_t extra_len,
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const uint8_t *extra_data,
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bool is_wpa);
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struct eapol_key *eapol_create_ptk_4_of_4(
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enum eapol_protocol_version protocol,
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enum eapol_key_descriptor_version version,
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uint64_t key_replay_counter,
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bool is_wpa);
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struct eapol_key *eapol_create_gtk_2_of_2(
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enum eapol_protocol_version protocol,
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enum eapol_key_descriptor_version version,
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uint64_t key_replay_counter,
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bool is_wpa, uint8_t wpa_key_id);
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const uint8_t *eapol_find_rsne(const uint8_t *data, size_t data_len,
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const uint8_t **optional);
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void __eapol_rx_packet(uint32_t ifindex, const uint8_t *src, uint16_t proto,
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const uint8_t *frame, size_t len, bool noencrypt);
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void __eapol_tx_packet(uint32_t ifindex, const uint8_t *dst, uint16_t proto,
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const struct eapol_frame *frame, bool noencrypt);
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void __eapol_set_tx_packet_func(eapol_tx_packet_func_t func);
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void __eapol_set_tx_user_data(void *user_data);
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void __eapol_set_rekey_offload_func(eapol_rekey_offload_func_t func);
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void __eapol_update_replay_counter(uint32_t ifindex, const uint8_t *spa,
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const uint8_t *aa, uint64_t replay_counter);
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void __eapol_set_config(struct l_settings *config);
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struct eapol_sm *eapol_sm_new(struct handshake_state *hs);
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void eapol_sm_free(struct eapol_sm *sm);
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void eapol_sm_set_protocol_version(struct eapol_sm *sm,
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enum eapol_protocol_version protocol_version);
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void eapol_sm_set_use_eapol_start(struct eapol_sm *sm, bool enabled);
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void eapol_sm_set_require_handshake(struct eapol_sm *sm, bool enabled);
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void eapol_sm_set_listen_interval(struct eapol_sm *sm, uint16_t interval);
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void eapol_sm_set_user_data(struct eapol_sm *sm, void *user_data);
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void eapol_sm_set_event_func(struct eapol_sm *sm, eapol_sm_event_func_t func);
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void eapol_register(struct eapol_sm *sm);
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bool eapol_start(struct eapol_sm *sm);
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uint32_t eapol_frame_watch_add(uint32_t ifindex,
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eapol_frame_watch_func_t handler,
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void *user_data);
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bool eapol_frame_watch_remove(uint32_t id);
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struct preauth_sm *eapol_preauth_start(const uint8_t *aa,
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const struct handshake_state *hs,
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eapol_preauth_cb_t cb, void *user_data,
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eapol_preauth_destroy_func_t destroy);
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void eapol_preauth_cancel(uint32_t ifindex);
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bool eapol_init();
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bool eapol_exit();
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