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MACsec: Add PAE implementation

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This adds initial implementation of IEEE Std 802.1X-2010 PAE for MACsec.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Hu Wang 2014-03-25 21:39:02 +02:00 committed by Jouni Malinen
parent 7baec808ef
commit 887d9d01ab
11 changed files with 5711 additions and 1 deletions
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2
src/Makefile
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SUBDIRS=ap common crypto drivers eapol_auth eapol_supp eap_common eap_peer eap_server l2_packet p2p radius rsn_supp tls utils wps SUBDIRS=ap common crypto drivers eapol_auth eapol_supp eap_common eap_peer eap_server l2_packet p2p pae radius rsn_supp tls utils wps
all: all:
for d in $(SUBDIRS); do [ -d $$d ] && $(MAKE) -C $$d; done for d in $(SUBDIRS); do [ -d $$d ] && $(MAKE) -C $$d; done

8
src/pae/Makefile Normal file
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all:
@echo Nothing to be made.
clean:
rm -f *~ *.o *.d
install:
@echo Nothing to be made.

744
src/pae/ieee802_1x_cp.c Normal file
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/*
* IEEE 802.1X-2010 Controlled Port of PAE state machine - CP state machine
* Copyright (c) 2013-2014, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "common/defs.h"
#include "common/ieee802_1x_defs.h"
#include "utils/state_machine.h"
#include "ieee802_1x_kay.h"
#include "ieee802_1x_secy_ops.h"
#include "pae/ieee802_1x_cp.h"
#define STATE_MACHINE_DATA struct ieee802_1x_cp_sm
#define STATE_MACHINE_DEBUG_PREFIX "CP"
static u8 default_cs_id[] = CS_ID_GCM_AES_128;
/* The variable defined in clause 12 in IEEE Std 802.1X-2010 */
enum connect_type { PENDING, UNAUTHENTICATED, AUTHENTICATED, SECURE };
struct ieee802_1x_cp_sm {
enum cp_states {
CP_BEGIN, CP_INIT, CP_CHANGE, CP_ALLOWED, CP_AUTHENTICATED,
CP_SECURED, CP_RECEIVE, CP_RECEIVING, CP_READY, CP_TRANSMIT,
CP_TRANSMITTING, CP_ABANDON, CP_RETIRE
} CP_state;
Boolean changed;
/* CP -> Client */
Boolean port_valid;
/* Logon -> CP */
enum connect_type connect;
u8 *authorization_data;
/* KaY -> CP */
Boolean chgd_server; /* clear by CP */
Boolean elected_self;
u8 *authorization_data1;
enum confidentiality_offset cipher_offset;
u8 *cipher_suite;
Boolean new_sak; /* clear by CP */
struct ieee802_1x_mka_ki distributed_ki;
u8 distributed_an;
Boolean using_receive_sas;
Boolean all_receiving;
Boolean server_transmitting;
Boolean using_transmit_sa;
/* CP -> KaY */
struct ieee802_1x_mka_ki *lki;
u8 lan;
Boolean ltx;
Boolean lrx;
struct ieee802_1x_mka_ki *oki;
u8 oan;
Boolean otx;
Boolean orx;
/* CP -> SecY */
Boolean protect_frames;
enum validate_frames validate_frames;
Boolean replay_protect;
u32 replay_window;
u8 *current_cipher_suite;
enum confidentiality_offset confidentiality_offset;
Boolean controlled_port_enabled;
/* SecY -> CP */
Boolean port_enabled; /* SecY->CP */
/* private */
u32 transmit_when;
u32 transmit_delay;
u32 retire_when;
u32 retire_delay;
/* not defined IEEE Std 802.1X-2010 */
struct ieee802_1x_kay *kay;
};
static void ieee802_1x_cp_retire_when_timeout(void *eloop_ctx,
void *timeout_ctx);
static void ieee802_1x_cp_transmit_when_timeout(void *eloop_ctx,
void *timeout_ctx);
static int changed_cipher(struct ieee802_1x_cp_sm *sm)
{
return sm->confidentiality_offset != sm->cipher_offset ||
os_memcmp(sm->current_cipher_suite, sm->cipher_suite,
CS_ID_LEN) != 0;
}
static int changed_connect(struct ieee802_1x_cp_sm *sm)
{
return sm->connect != SECURE || sm->chgd_server || changed_cipher(sm);
}
SM_STATE(CP, INIT)
{
SM_ENTRY(CP, INIT);
sm->controlled_port_enabled = FALSE;
secy_cp_control_enable_port(sm->kay, sm->controlled_port_enabled);
sm->port_valid = FALSE;
os_free(sm->lki);
sm->lki = NULL;
sm->ltx = FALSE;
sm->lrx = FALSE;
os_free(sm->oki);
sm->oki = NULL;
sm->otx = FALSE;
sm->orx = FALSE;
sm->port_enabled = TRUE;
sm->chgd_server = FALSE;
}
SM_STATE(CP, CHANGE)
{
SM_ENTRY(CP, CHANGE);
sm->port_valid = FALSE;
sm->controlled_port_enabled = FALSE;
secy_cp_control_enable_port(sm->kay, sm->controlled_port_enabled);
if (sm->lki)
ieee802_1x_kay_delete_sas(sm->kay, sm->lki);
if (sm->oki)
ieee802_1x_kay_delete_sas(sm->kay, sm->oki);
}
SM_STATE(CP, ALLOWED)
{
SM_ENTRY(CP, ALLOWED);
sm->protect_frames = FALSE;
sm->replay_protect = FALSE;
sm->validate_frames = Checked;
sm->port_valid = FALSE;
sm->controlled_port_enabled = TRUE;
secy_cp_control_enable_port(sm->kay, sm->controlled_port_enabled);
secy_cp_control_protect_frames(sm->kay, sm->protect_frames);
secy_cp_control_validate_frames(sm->kay, sm->validate_frames);
secy_cp_control_replay(sm->kay, sm->replay_protect, sm->replay_window);
}
SM_STATE(CP, AUTHENTICATED)
{
SM_ENTRY(CP, AUTHENTICATED);
sm->protect_frames = FALSE;
sm->replay_protect = FALSE;
sm->validate_frames = Checked;
sm->port_valid = FALSE;
sm->controlled_port_enabled = TRUE;
secy_cp_control_enable_port(sm->kay, sm->controlled_port_enabled);
secy_cp_control_protect_frames(sm->kay, sm->protect_frames);
secy_cp_control_validate_frames(sm->kay, sm->validate_frames);
secy_cp_control_replay(sm->kay, sm->replay_protect, sm->replay_window);
}
SM_STATE(CP, SECURED)
{
struct ieee802_1x_cp_conf conf;
SM_ENTRY(CP, SECURED);
sm->chgd_server = FALSE;
ieee802_1x_kay_cp_conf(sm->kay, &conf);
sm->protect_frames = conf.protect;
sm->replay_protect = conf.replay_protect;
sm->validate_frames = conf.validate;
/* NOTE: now no other than default cipher suiter(AES-GCM-128) */
os_memcpy(sm->current_cipher_suite, sm->cipher_suite, CS_ID_LEN);
secy_cp_control_current_cipher_suite(sm->kay, sm->current_cipher_suite,
CS_ID_LEN);
sm->confidentiality_offset = sm->cipher_offset;
sm->port_valid = TRUE;
secy_cp_control_confidentiality_offset(sm->kay,
sm->confidentiality_offset);
secy_cp_control_protect_frames(sm->kay, sm->protect_frames);
secy_cp_control_validate_frames(sm->kay, sm->validate_frames);
secy_cp_control_replay(sm->kay, sm->replay_protect, sm->replay_window);
}
SM_STATE(CP, RECEIVE)
{
SM_ENTRY(CP, RECEIVE);
/* RECEIVE state machine not keep with Figure 12-2 in
* IEEE Std 802.1X-2010 */
sm->oki = sm->lki;
sm->oan = sm->lan;
sm->otx = sm->ltx;
sm->orx = sm->lrx;
ieee802_1x_kay_set_old_sa_attr(sm->kay, sm->oki, sm->oan,
sm->otx, sm->orx);
sm->lki = os_malloc(sizeof(*sm->lki));
if (!sm->lki) {
wpa_printf(MSG_ERROR, "CP-%s: Out of memory", __func__);
return;
}
os_memcpy(sm->lki, &sm->distributed_ki, sizeof(*sm->lki));
sm->lan = sm->distributed_an;
sm->ltx = FALSE;
sm->lrx = FALSE;
ieee802_1x_kay_set_latest_sa_attr(sm->kay, sm->lki, sm->lan,
sm->ltx, sm->lrx);
ieee802_1x_kay_create_sas(sm->kay, sm->lki);
ieee802_1x_kay_enable_rx_sas(sm->kay, sm->lki);
sm->new_sak = FALSE;
sm->all_receiving = FALSE;
}
SM_STATE(CP, RECEIVING)
{
SM_ENTRY(CP, RECEIVING);
sm->lrx = TRUE;
ieee802_1x_kay_set_latest_sa_attr(sm->kay, sm->lki, sm->lan,
sm->ltx, sm->lrx);
sm->transmit_when = sm->transmit_delay;
eloop_cancel_timeout(ieee802_1x_cp_transmit_when_timeout, sm, NULL);
eloop_register_timeout(sm->transmit_when / 1000, 0,
ieee802_1x_cp_transmit_when_timeout, sm, NULL);
/* the electedSelf have been set before CP entering to RECEIVING
* but the CP will transmit from RECEIVING to READY under
* the !electedSelf when KaY is not key server */
ieee802_1x_cp_sm_step(sm);
sm->using_receive_sas = FALSE;
sm->server_transmitting = FALSE;
}
SM_STATE(CP, READY)
{
SM_ENTRY(CP, READY);
ieee802_1x_kay_enable_new_info(sm->kay);
}
SM_STATE(CP, TRANSMIT)
{
SM_ENTRY(CP, TRANSMIT);
sm->controlled_port_enabled = TRUE;
secy_cp_control_enable_port(sm->kay, sm->controlled_port_enabled);
sm->ltx = TRUE;
ieee802_1x_kay_set_latest_sa_attr(sm->kay, sm->lki, sm->lan,
sm->ltx, sm->lrx);
ieee802_1x_kay_enable_tx_sas(sm->kay, sm->lki);
sm->all_receiving = FALSE;
sm->server_transmitting = FALSE;
}
SM_STATE(CP, TRANSMITTING)
{
SM_ENTRY(CP, TRANSMITTING);
sm->retire_when = sm->orx ? sm->retire_delay : 0;
sm->otx = FALSE;
ieee802_1x_kay_set_old_sa_attr(sm->kay, sm->oki, sm->oan,
sm->otx, sm->orx);
ieee802_1x_kay_enable_new_info(sm->kay);
eloop_cancel_timeout(ieee802_1x_cp_retire_when_timeout, sm, NULL);
eloop_register_timeout(sm->retire_when / 1000, 0,
ieee802_1x_cp_retire_when_timeout, sm, NULL);
sm->using_transmit_sa = FALSE;
}
SM_STATE(CP, ABANDON)
{
SM_ENTRY(CP, ABANDON);
sm->lrx = FALSE;
ieee802_1x_kay_set_latest_sa_attr(sm->kay, sm->lki, sm->lan,
sm->ltx, sm->lrx);
ieee802_1x_kay_delete_sas(sm->kay, sm->lki);
os_free(sm->lki);
sm->lki = NULL;
ieee802_1x_kay_set_latest_sa_attr(sm->kay, sm->lki, sm->lan,
sm->ltx, sm->lrx);
sm->new_sak = FALSE;
}
SM_STATE(CP, RETIRE)
{
SM_ENTRY(CP, RETIRE);
/* RETIRE state machine not keep with Figure 12-2 in
* IEEE Std 802.1X-2010 */
os_free(sm->oki);
sm->oki = NULL;
sm->orx = FALSE;
sm->otx = FALSE;
ieee802_1x_kay_set_old_sa_attr(sm->kay, sm->oki, sm->oan,
sm->otx, sm->orx);
}
/**
* CP state machine handler entry
*/
SM_STEP(CP)
{
if (!sm->port_enabled)
SM_ENTER(CP, INIT);
switch (sm->CP_state) {
case CP_BEGIN:
SM_ENTER(CP, INIT);
break;
case CP_INIT:
SM_ENTER(CP, CHANGE);
break;
case CP_CHANGE:
if (sm->connect == UNAUTHENTICATED)
SM_ENTER(CP, ALLOWED);
else if (sm->connect == AUTHENTICATED)
SM_ENTER(CP, AUTHENTICATED);
else if (sm->connect == SECURE)
SM_ENTER(CP, SECURED);
break;
case CP_ALLOWED:
if (sm->connect != UNAUTHENTICATED)
SM_ENTER(CP, CHANGE);
break;
case CP_AUTHENTICATED:
if (sm->connect != AUTHENTICATED)
SM_ENTER(CP, CHANGE);
break;
case CP_SECURED:
if (changed_connect(sm))
SM_ENTER(CP, CHANGE);
else if (sm->new_sak)
SM_ENTER(CP, RECEIVE);
break;
case CP_RECEIVE:
if (sm->using_receive_sas)
SM_ENTER(CP, RECEIVING);
break;
case CP_RECEIVING:
if (sm->new_sak || changed_connect(sm))
SM_ENTER(CP, ABANDON);
if (!sm->elected_self)
SM_ENTER(CP, READY);
if (sm->elected_self &&
(sm->all_receiving || !sm->transmit_when))
SM_ENTER(CP, TRANSMIT);
break;
case CP_TRANSMIT:
if (sm->using_transmit_sa)
SM_ENTER(CP, TRANSMITTING);
break;
case CP_TRANSMITTING:
if (!sm->retire_when || changed_connect(sm))
SM_ENTER(CP, RETIRE);
break;
case CP_RETIRE:
if (changed_connect(sm))
SM_ENTER(CP, CHANGE);
else if (sm->new_sak)
SM_ENTER(CP, RECEIVE);
break;
case CP_READY:
if (sm->new_sak || changed_connect(sm))
SM_ENTER(CP, RECEIVE);
if (sm->server_transmitting)
SM_ENTER(CP, TRANSMIT);
break;
case CP_ABANDON:
if (changed_connect(sm))
SM_ENTER(CP, RETIRE);
else if (sm->new_sak)
SM_ENTER(CP, RECEIVE);
break;
default:
wpa_printf(MSG_ERROR, "CP: the state machine is not defined");
break;
}
}
/**
* ieee802_1x_cp_sm_init -
*/
struct ieee802_1x_cp_sm * ieee802_1x_cp_sm_init(
struct ieee802_1x_kay *kay,
struct ieee802_1x_cp_conf *pcp_conf)
{
struct ieee802_1x_cp_sm *sm;
sm = os_zalloc(sizeof(*sm));
if (sm == NULL) {
wpa_printf(MSG_ERROR, "CP-%s: out of memory", __func__);
return NULL;
}
sm->kay = kay;
sm->port_valid = FALSE;
sm->chgd_server = FALSE;
sm->protect_frames = pcp_conf->protect;
sm->validate_frames = pcp_conf->validate;
sm->replay_protect = pcp_conf->replay_protect;
sm->replay_window = pcp_conf->replay_window;
sm->controlled_port_enabled = FALSE;
sm->lki = NULL;
sm->lrx = FALSE;
sm->ltx = FALSE;
sm->oki = NULL;
sm->orx = FALSE;
sm->otx = FALSE;
sm->cipher_suite = os_zalloc(CS_ID_LEN);
sm->current_cipher_suite = os_zalloc(CS_ID_LEN);
if (!sm->cipher_suite || !sm->current_cipher_suite) {
wpa_printf(MSG_ERROR, "CP-%s: out of memory", __func__);
os_free(sm->cipher_suite);
os_free(sm->current_cipher_suite);
os_free(sm);
return NULL;
}
os_memcpy(sm->current_cipher_suite, default_cs_id, CS_ID_LEN);
os_memcpy(sm->cipher_suite, default_cs_id, CS_ID_LEN);
sm->cipher_offset = CONFIDENTIALITY_OFFSET_0;
sm->confidentiality_offset = sm->cipher_offset;
sm->transmit_delay = MKA_LIFE_TIME;
sm->retire_delay = MKA_SAK_RETIRE_TIME;
sm->CP_state = CP_BEGIN;
sm->changed = FALSE;
sm->authorization_data = NULL;
wpa_printf(MSG_DEBUG, "CP: state machine created");
secy_cp_control_protect_frames(sm->kay, sm->protect_frames);
secy_cp_control_validate_frames(sm->kay, sm->validate_frames);
secy_cp_control_replay(sm->kay, sm->replay_protect, sm->replay_window);
secy_cp_control_enable_port(sm->kay, sm->controlled_port_enabled);
secy_cp_control_confidentiality_offset(sm->kay,
sm->confidentiality_offset);
SM_ENTER(CP, INIT);
SM_STEP_RUN(CP);
return sm;
}
static void ieee802_1x_cp_step_run(struct ieee802_1x_cp_sm *sm)
{
enum cp_states prev_state;
int i;
for (i = 0; i < 100; i++) {
prev_state = sm->CP_state;
SM_STEP_RUN(CP);
if (prev_state == sm->CP_state)
break;
}
}
static void ieee802_1x_cp_step_cb(void *eloop_ctx, void *timeout_ctx)
{
struct ieee802_1x_cp_sm *sm = eloop_ctx;
ieee802_1x_cp_step_run(sm);
}
/**
* ieee802_1x_cp_sm_deinit -
*/
void ieee802_1x_cp_sm_deinit(struct ieee802_1x_cp_sm *sm)
{
wpa_printf(MSG_DEBUG, "CP: state machine removed");
if (!sm)
return;
eloop_cancel_timeout(ieee802_1x_cp_retire_when_timeout, sm, NULL);
eloop_cancel_timeout(ieee802_1x_cp_transmit_when_timeout, sm, NULL);
eloop_cancel_timeout(ieee802_1x_cp_step_cb, sm, NULL);
os_free(sm->lki);
os_free(sm->oki);
os_free(sm->cipher_suite);
os_free(sm->current_cipher_suite);
os_free(sm->authorization_data);
os_free(sm);
}
/**
* ieee802_1x_cp_connect_pending
*/
void ieee802_1x_cp_connect_pending(void *cp_ctx)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->connect = PENDING;
}
/**
* ieee802_1x_cp_connect_unauthenticated
*/
void ieee802_1x_cp_connect_unauthenticated(void *cp_ctx)
{
struct ieee802_1x_cp_sm *sm = (struct ieee802_1x_cp_sm *)cp_ctx;
sm->connect = UNAUTHENTICATED;
}
/**
* ieee802_1x_cp_connect_authenticated
*/
void ieee802_1x_cp_connect_authenticated(void *cp_ctx)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->connect = AUTHENTICATED;
}
/**
* ieee802_1x_cp_connect_secure
*/
void ieee802_1x_cp_connect_secure(void *cp_ctx)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->connect = SECURE;
}
/**
* ieee802_1x_cp_set_chgdserver -
*/
void ieee802_1x_cp_signal_chgdserver(void *cp_ctx)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->chgd_server = TRUE;
}
/**
* ieee802_1x_cp_set_electedself -
*/
void ieee802_1x_cp_set_electedself(void *cp_ctx, Boolean status)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->elected_self = status;
}
/**
* ieee802_1x_cp_set_authorizationdata -
*/
void ieee802_1x_cp_set_authorizationdata(void *cp_ctx, u8 *pdata, int len)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
os_free(sm->authorization_data);
sm->authorization_data = os_zalloc(len);
if (sm->authorization_data)
os_memcpy(sm->authorization_data, pdata, len);
}
/**
* ieee802_1x_cp_set_ciphersuite -
*/
void ieee802_1x_cp_set_ciphersuite(void *cp_ctx, void *pid)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
os_memcpy(sm->cipher_suite, pid, CS_ID_LEN);
}
/**
* ieee802_1x_cp_set_offset -
*/
void ieee802_1x_cp_set_offset(void *cp_ctx, enum confidentiality_offset offset)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->cipher_offset = offset;
}
/**
* ieee802_1x_cp_signal_newsak -
*/
void ieee802_1x_cp_signal_newsak(void *cp_ctx)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->new_sak = TRUE;
}
/**
* ieee802_1x_cp_set_distributedki -
*/
void ieee802_1x_cp_set_distributedki(void *cp_ctx,
const struct ieee802_1x_mka_ki *dki)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
os_memcpy(&sm->distributed_ki, dki, sizeof(struct ieee802_1x_mka_ki));
}
/**
* ieee802_1x_cp_set_distributedan -
*/
void ieee802_1x_cp_set_distributedan(void *cp_ctx, u8 an)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->distributed_an = an;
}
/**
* ieee802_1x_cp_set_usingreceivesas -
*/
void ieee802_1x_cp_set_usingreceivesas(void *cp_ctx, Boolean status)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->using_receive_sas = status;
}
/**
* ieee802_1x_cp_set_allreceiving -
*/
void ieee802_1x_cp_set_allreceiving(void *cp_ctx, Boolean status)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->all_receiving = status;
}
/**
* ieee802_1x_cp_set_servertransmitting -
*/
void ieee802_1x_cp_set_servertransmitting(void *cp_ctx, Boolean status)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->server_transmitting = status;
}
/**
* ieee802_1x_cp_set_usingtransmitsas -
*/
void ieee802_1x_cp_set_usingtransmitas(void *cp_ctx, Boolean status)
{
struct ieee802_1x_cp_sm *sm = cp_ctx;
sm->using_transmit_sa = status;
}
/**
* ieee802_1x_cp_sm_step - Advance EAPOL state machines
* @sm: EAPOL state machine
*
* This function is called to advance CP state machines after any change
* that could affect their state.
*/
void ieee802_1x_cp_sm_step(void *cp_ctx)
{
/*
* Run ieee802_1x_cp_step_run from a registered timeout
* to make sure that other possible timeouts/events are processed
* and to avoid long function call chains.
*/
struct ieee802_1x_cp_sm *sm = cp_ctx;
eloop_cancel_timeout(ieee802_1x_cp_step_cb, sm, NULL);
eloop_register_timeout(0, 0, ieee802_1x_cp_step_cb, sm, NULL);
}
static void ieee802_1x_cp_retire_when_timeout(void *eloop_ctx,
void *timeout_ctx)
{
struct ieee802_1x_cp_sm *sm = eloop_ctx;
sm->retire_when = 0;
ieee802_1x_cp_step_run(sm);
}
static void
ieee802_1x_cp_transmit_when_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct ieee802_1x_cp_sm *sm = eloop_ctx;
sm->transmit_when = 0;
ieee802_1x_cp_step_run(sm);
}

50
src/pae/ieee802_1x_cp.h Normal file
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/*
* IEEE Std 802.1X-2010 Controlled Port of PAE state machine - CP state machine
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef IEEE802_1X_CP_H
#define IEEE802_1X_CP_H
#include "common/defs.h"
#include "common/ieee802_1x_defs.h"
struct ieee802_1x_cp_sm;
struct ieee802_1x_kay;
struct ieee802_1x_mka_ki;
struct ieee802_1x_cp_conf {
Boolean protect;
Boolean replay_protect;
enum validate_frames validate;
u32 replay_window;
};
struct ieee802_1x_cp_sm *
ieee802_1x_cp_sm_init(struct ieee802_1x_kay *kay,
struct ieee802_1x_cp_conf *pcp_conf);
void ieee802_1x_cp_sm_deinit(struct ieee802_1x_cp_sm *sm);
void ieee802_1x_cp_sm_step(void *cp_ctx);
void ieee802_1x_cp_connect_pending(void *cp_ctx);
void ieee802_1x_cp_connect_unauthenticated(void *cp_ctx);
void ieee802_1x_cp_connect_authenticated(void *cp_ctx);
void ieee802_1x_cp_connect_secure(void *cp_ctx);
void ieee802_1x_cp_signal_chgdserver(void *cp_ctx);
void ieee802_1x_cp_set_electedself(void *cp_ctx, Boolean status);
void ieee802_1x_cp_set_authorizationdata(void *cp_ctx, u8 *pdata, int len);
void ieee802_1x_cp_set_ciphersuite(void *cp_ctx, void *pid);
void ieee802_1x_cp_set_offset(void *cp_ctx, enum confidentiality_offset offset);
void ieee802_1x_cp_signal_newsak(void *cp_ctx);
void ieee802_1x_cp_set_distributedki(void *cp_ctx,
const struct ieee802_1x_mka_ki *dki);
void ieee802_1x_cp_set_distributedan(void *cp_ctx, u8 an);
void ieee802_1x_cp_set_usingreceivesas(void *cp_ctx, Boolean status);
void ieee802_1x_cp_set_allreceiving(void *cp_ctx, Boolean status);
void ieee802_1x_cp_set_servertransmitting(void *cp_ctx, Boolean status);
void ieee802_1x_cp_set_usingtransmitas(void *cp_ctx, Boolean status);
#endif /* IEEE802_1X_CP_H */

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/*
* IEEE 802.1X-2010 Key Agree Protocol of PAE state machine
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef IEEE802_1X_KAY_H
#define IEEE802_1X_KAY_H
#include "utils/list.h"
#include "common/defs.h"
#include "common/ieee802_1x_defs.h"
struct macsec_init_params;
struct ieee802_1x_cp_conf;
#define MI_LEN 12
#define MAX_KEY_LEN 32 /* 32 bytes, 256 bits */
#define MAX_CKN_LEN 32 /* 32 bytes, 256 bits */
/* MKA timer, unit: millisecond */
#define MKA_HELLO_TIME 2000
#define MKA_LIFE_TIME 6000
#define MKA_SAK_RETIRE_TIME 3000
struct ieee802_1x_mka_ki {
u8 mi[MI_LEN];
u32 kn;
};
struct ieee802_1x_mka_sci {
u8 addr[ETH_ALEN];
u16 port;
};
struct mka_key {
u8 key[MAX_KEY_LEN];
size_t len;
};
struct mka_key_name {
u8 name[MAX_CKN_LEN];
size_t len;
};
enum mka_created_mode {
PSK,
EAP_EXCHANGE,
DISTRIBUTED,
CACHED,
};
struct ieee802_1x_kay_ctx {
/* pointer to arbitrary upper level context */
void *ctx;
/* abstract wpa driver interface */
int (*macsec_init)(void *ctx, struct macsec_init_params *params);
int (*macsec_deinit)(void *ctx);
int (*enable_protect_frames)(void *ctx, Boolean enabled);
int (*set_replay_protect)(void *ctx, Boolean enabled, u32 window);
int (*set_current_cipher_suite)(void *ctx, const u8 *cs, size_t cs_len);
int (*enable_controlled_port)(void *ctx, Boolean enabled);
int (*get_receive_lowest_pn)(void *ctx, u32 channel, u8 an,
u32 *lowest_pn);
int (*get_transmit_next_pn)(void *ctx, u32 channel, u8 an,
u32 *next_pn);
int (*set_transmit_next_pn)(void *ctx, u32 channel, u8 an, u32 next_pn);
int (*get_available_receive_sc)(void *ctx, u32 *channel);
int (*create_receive_sc)(void *ctx, u32 channel,
struct ieee802_1x_mka_sci *sci,
enum validate_frames vf,
enum confidentiality_offset co);
int (*delete_receive_sc)(void *ctx, u32 channel);
int (*create_receive_sa)(void *ctx, u32 channel, u8 an, u32 lowest_pn,
const u8 *sak);
int (*enable_receive_sa)(void *ctx, u32 channel, u8 an);
int (*disable_receive_sa)(void *ctx, u32 channel, u8 an);
int (*get_available_transmit_sc)(void *ctx, u32 *channel);
int (*create_transmit_sc)(void *ctx, u32 channel,
const struct ieee802_1x_mka_sci *sci,
enum confidentiality_offset co);
int (*delete_transmit_sc)(void *ctx, u32 channel);
int (*create_transmit_sa)(void *ctx, u32 channel, u8 an, u32 next_pn,
Boolean confidentiality, const u8 *sak);
int (*enable_transmit_sa)(void *ctx, u32 channel, u8 an);
int (*disable_transmit_sa)(void *ctx, u32 channel, u8 an);
};
struct ieee802_1x_kay {
Boolean enable;
Boolean active;
Boolean authenticated;
Boolean secured;
Boolean failed;
struct ieee802_1x_mka_sci actor_sci;
u8 actor_priority;
struct ieee802_1x_mka_sci key_server_sci;
u8 key_server_priority;
enum macsec_cap macsec_capable;
Boolean macsec_desired;
Boolean macsec_protect;
Boolean macsec_replay_protect;
u32 macsec_replay_window;
enum validate_frames macsec_validate;
enum confidentiality_offset macsec_confidentiality;
u32 ltx_kn;
u8 ltx_an;
u32 lrx_kn;
u8 lrx_an;
u32 otx_kn;
u8 otx_an;
u32 orx_kn;
u8 orx_an;
/* not defined in IEEE802.1X */
struct ieee802_1x_kay_ctx *ctx;
Boolean is_key_server;
Boolean is_obliged_key_server;
char if_name[IFNAMSIZ];
int macsec_csindex; /* MACsec cipher suite table index */
int mka_algindex; /* MKA alg table index */
u32 dist_kn;
u8 dist_an;
time_t dist_time;
u8 mka_version;
u8 algo_agility[4];
u32 sc_ch;
u32 pn_exhaustion;
Boolean port_enable;
Boolean rx_enable;
Boolean tx_enable;
struct dl_list participant_list;
enum macsec_policy policy;
struct ieee802_1x_cp_sm *cp;
struct l2_packet_data *l2_mka;
enum validate_frames vf;
enum confidentiality_offset co;
};
struct ieee802_1x_kay *
ieee802_1x_kay_init(struct ieee802_1x_kay_ctx *ctx, enum macsec_policy policy,
const char *ifname, const u8 *addr);
void ieee802_1x_kay_deinit(struct ieee802_1x_kay *kay);
struct ieee802_1x_mka_participant *
ieee802_1x_kay_create_mka(struct ieee802_1x_kay *kay,
struct mka_key_name *ckn, struct mka_key *cak,
u32 life, enum mka_created_mode mode,
Boolean is_authenticator);
void ieee802_1x_kay_delete_mka(struct ieee802_1x_kay *kay,
struct mka_key_name *ckn);
void ieee802_1x_kay_mka_participate(struct ieee802_1x_kay *kay,
struct mka_key_name *ckn,
Boolean status);
int ieee802_1x_kay_new_sak(struct ieee802_1x_kay *kay);
int ieee802_1x_kay_change_cipher_suite(struct ieee802_1x_kay *kay,
int cs_index);
int ieee802_1x_kay_set_latest_sa_attr(struct ieee802_1x_kay *kay,
struct ieee802_1x_mka_ki *lki, u8 lan,
Boolean ltx, Boolean lrx);
int ieee802_1x_kay_set_old_sa_attr(struct ieee802_1x_kay *kay,
struct ieee802_1x_mka_ki *oki,
u8 oan, Boolean otx, Boolean orx);
int ieee802_1x_kay_create_sas(struct ieee802_1x_kay *kay,
struct ieee802_1x_mka_ki *lki);
int ieee802_1x_kay_delete_sas(struct ieee802_1x_kay *kay,
struct ieee802_1x_mka_ki *ki);
int ieee802_1x_kay_enable_tx_sas(struct ieee802_1x_kay *kay,
struct ieee802_1x_mka_ki *lki);
int ieee802_1x_kay_enable_rx_sas(struct ieee802_1x_kay *kay,
struct ieee802_1x_mka_ki *lki);
int ieee802_1x_kay_enable_new_info(struct ieee802_1x_kay *kay);
int ieee802_1x_kay_cp_conf(struct ieee802_1x_kay *kay,
struct ieee802_1x_cp_conf *pconf);
#endif /* IEEE802_1X_KAY_H */

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/*
* IEEE 802.1X-2010 Key Agree Protocol of PAE state machine
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef IEEE802_1X_KAY_I_H
#define IEEE802_1X_KAY_I_H
#include "utils/list.h"
#include "common/defs.h"
#include "common/ieee802_1x_defs.h"
#define MKA_VERSION_ID 1
/* IEEE Std 802.1X-2010, 11.11.1, Table 11-7 */
enum mka_packet_type {
MKA_BASIC_PARAMETER_SET = MKA_VERSION_ID,
MKA_LIVE_PEER_LIST = 1,
MKA_POTENTIAL_PEER_LIST = 2,
MKA_SAK_USE = 3,
MKA_DISTRIBUTED_SAK = 4,
MKA_DISTRIBUTED_CAK = 5,
MKA_KMD = 6,
MKA_ANNOUNCEMENT = 7,
MKA_ICV_INDICATOR = 255
};
#define ICV_LEN 16 /* 16 bytes */
#define SAK_WRAPPED_LEN 24
/* KN + Wrapper SAK */
#define DEFAULT_DIS_SAK_BODY_LENGTH (SAK_WRAPPED_LEN + 4)
#define MAX_RETRY_CNT 5
struct ieee802_1x_kay;
struct ieee802_1x_mka_peer_id {
u8 mi[MI_LEN];
u32 mn;
};
struct ieee802_1x_kay_peer {
struct ieee802_1x_mka_sci sci;
u8 mi[MI_LEN];
u32 mn;
time_t expire;
Boolean is_key_server;
u8 key_server_priority;
Boolean macsec_desired;
enum macsec_cap macsec_capbility;
Boolean sak_used;
struct dl_list list;
};
struct key_conf {
u8 *key;
struct ieee802_1x_mka_ki ki;
enum confidentiality_offset offset;
u8 an;
Boolean tx;
Boolean rx;
int key_len; /* unit: byte */
};
struct data_key {
u8 *key;
int key_len;
struct ieee802_1x_mka_ki key_identifier;
enum confidentiality_offset confidentiality_offset;
u8 an;
Boolean transmits;
Boolean receives;
struct os_time created_time;
u32 next_pn;
/* not defined data */
Boolean rx_latest;
Boolean tx_latest;
int user; /* FIXME: to indicate if it can be delete safely */
struct dl_list list;
};
/* TransmitSC in IEEE Std 802.1AE-2006, Figure 10-6 */
struct transmit_sc {
struct ieee802_1x_mka_sci sci; /* const SCI sci */
Boolean transmitting; /* bool transmitting (read only) */
struct os_time created_time; /* Time createdTime */
u8 encoding_sa; /* AN encodingSA (read only) */
u8 enciphering_sa; /* AN encipheringSA (read only) */
/* not defined data */
unsigned int channel;
struct dl_list list;
struct dl_list sa_list;
};
/* TransmitSA in IEEE Std 802.1AE-2006, Figure 10-6 */
struct transmit_sa {
Boolean in_use; /* bool inUse (read only) */
u32 next_pn; /* PN nextPN (read only) */
struct os_time created_time; /* Time createdTime */
Boolean enable_transmit; /* bool EnableTransmit */
u8 an;
Boolean confidentiality;
struct data_key *pkey;
struct transmit_sc *sc;
struct dl_list list; /* list entry in struct transmit_sc::sa_list */
};
/* ReceiveSC in IEEE Std 802.1AE-2006, Figure 10-6 */
struct receive_sc {
struct ieee802_1x_mka_sci sci; /* const SCI sci */
Boolean receiving; /* bool receiving (read only) */
struct os_time created_time; /* Time createdTime */
unsigned int channel;
struct dl_list list;
struct dl_list sa_list;
};
/* ReceiveSA in IEEE Std 802.1AE-2006, Figure 10-6 */
struct receive_sa {
Boolean enable_receive; /* bool enableReceive */
Boolean in_use; /* bool inUse (read only) */
u32 next_pn; /* PN nextPN (read only) */
u32 lowest_pn; /* PN lowestPN (read only) */
u8 an;
struct os_time created_time;
struct data_key *pkey;
struct receive_sc *sc; /* list entry in struct receive_sc::sa_list */
struct dl_list list;
};
struct macsec_ciphersuite {
u8 id[CS_ID_LEN];
char name[32];
enum macsec_cap capable;
int sak_len; /* unit: byte */
u32 index;
};
struct mka_alg {
u8 parameter[4];
size_t cak_len;
size_t kek_len;
size_t ick_len;
size_t icv_len;
int (*cak_trfm)(const u8 *msk, const u8 *mac1, const u8 *mac2, u8 *cak);
int (*ckn_trfm)(const u8 *msk, const u8 *mac1, const u8 *mac2,
const u8 *sid, size_t sid_len, u8 *ckn);
int (*kek_trfm)(const u8 *cak, const u8 *ckn, size_t ckn_len, u8 *kek);
int (*ick_trfm)(const u8 *cak, const u8 *ckn, size_t ckn_len, u8 *ick);
int (*icv_hash)(const u8 *ick, const u8 *msg, size_t msg_len, u8 *icv);
int index; /* index for configuring */
};
#define DEFAULT_MKA_ALG_INDEX 0
/* See IEEE Std 802.1X-2010, 9.16 MKA management */
struct ieee802_1x_mka_participant {
/* used for active and potential participant */
struct mka_key_name ckn;
struct mka_key cak;
Boolean cached;
/* used by management to monitor and control activation */
Boolean active;
Boolean participant;
Boolean retain;
enum { DEFAULT, DISABLED, ON_OPER_UP, ALWAYS } activate;
/* used for active participant */
Boolean principal;
struct dl_list live_peers;
struct dl_list potential_peers;
/* not defined in IEEE 802.1X */
struct dl_list list;
struct mka_key kek;
struct mka_key ick;
struct ieee802_1x_mka_ki lki;
u8 lan;
Boolean ltx;
Boolean lrx;
struct ieee802_1x_mka_ki oki;
u8 oan;
Boolean otx;
Boolean orx;
Boolean is_key_server;
Boolean is_obliged_key_server;
Boolean can_be_key_server;
Boolean is_elected;
struct dl_list sak_list;
struct dl_list rxsc_list;
struct transmit_sc *txsc;
u8 mi[MI_LEN];
u32 mn;
struct ieee802_1x_mka_peer_id current_peer_id;
struct ieee802_1x_mka_sci current_peer_sci;
time_t cak_life;
time_t mka_life;
Boolean to_dist_sak;
Boolean to_use_sak;
Boolean new_sak;
Boolean advised_desired;
enum macsec_cap advised_capability;
struct data_key *new_key;
u32 retry_count;
struct ieee802_1x_kay *kay;
};
struct ieee802_1x_mka_hdr {
/* octet 1 */
u32 type:8;
/* octet 2 */
u32 reserve:8;
/* octet 3 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 length:4;
u32 reserve1:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 reserve1:4;
u32 length:4;
#else
#error "Please fix <bits/endian.h>"
#endif
/* octet 4 */
u32 length1:8;
};
#define MKA_HDR_LEN sizeof(struct ieee802_1x_mka_hdr)
struct ieee802_1x_mka_basic_body {
/* octet 1 */
u32 version:8;
/* octet 2 */
u32 priority:8;
/* octet 3 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 length:4;
u32 macsec_capbility:2;
u32 macsec_desired:1;
u32 key_server:1;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 key_server:1;
u32 macsec_desired:1;
u32 macsec_capbility:2;
u32 length:4;
#endif
/* octet 4 */
u32 length1:8;
struct ieee802_1x_mka_sci actor_sci;
u8 actor_mi[MI_LEN];
u32 actor_mn;
u8 algo_agility[4];
/* followed by CAK Name*/
u8 ckn[0];
};
struct ieee802_1x_mka_peer_body {
/* octet 1 */
u32 type:8;
/* octet 2 */
u32 reserve:8;
/* octet 3 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 length:4;
u32 reserve1:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 reserve1:4;
u32 length:4;
#endif
/* octet 4 */
u32 length1:8;
u8 peer[0];
/* followed by Peers */
};
struct ieee802_1x_mka_sak_use_body {
/* octet 1 */
u32 type:8;
/* octet 2 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 orx:1;
u32 otx:1;
u32 oan:2;
u32 lrx:1;
u32 ltx:1;
u32 lan:2;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 lan:2;
u32 ltx:1;
u32 lrx:1;
u32 oan:2;
u32 otx:1;
u32 orx:1;
#endif
/* octet 3 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 length:4;
u32 delay_protect:1;
u32 reserve:1;
u32 prx:1;
u32 ptx:1;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 ptx:1;
u32 prx:1;
u32 reserve:1;
u32 delay_protect:1;
u32 length:4;
#endif
/* octet 4 */
u32 length1:8;
/* octet 5 - 16 */
u8 lsrv_mi[MI_LEN];
/* octet 17 - 20 */
u32 lkn;
/* octet 21 - 24 */
u32 llpn;
/* octet 25 - 36 */
u8 osrv_mi[MI_LEN];
/* octet 37 - 40 */
u32 okn;
/* octet 41 - 44 */
u32 olpn;
};
struct ieee802_1x_mka_dist_sak_body {
/* octet 1 */
u32 type:8;
/* octet 2 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 reserve:4;
u32 confid_offset:2;
u32 dan:2;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 dan:2;
u32 confid_offset:2;
u32 reserve:4;
#endif
/* octet 3 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 length:4;
u32 reserve1:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 reserve1:4;
u32 length:4;
#endif
/* octet 4 */
u32 length1:8;
/* octet 5 - 8 */
u32 kn;
/* for GCM-AES-128: octet 9-32: SAK
* for other cipher suite: octet 9-16: cipher suite id, octet 17-: SAK
*/
u8 sak[0];
};
struct ieee802_1x_mka_icv_body {
/* octet 1 */
u32 type:8;
/* octet 2 */
u32 reserve:8;
/* octet 3 */
#if __BYTE_ORDER == __LITTLE_ENDIAN
u32 length:4;
u32 reserve1:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
u32 reserve1:4;
u32 length:4;
#endif
/* octet 4 */
u32 length1:8;
/* octet 5 - */
u8 icv[0];
};
#endif /* IEEE802_1X_KAY_I_H */

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/*
* IEEE 802.1X-2010 Key Hierarchy
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*
* SAK derivation specified in IEEE Std 802.1X-2010, Clause 6.2
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "crypto/md5.h"
#include "crypto/sha1.h"
#include "crypto/aes_wrap.h"
#include "crypto/crypto.h"
#include "ieee802_1x_key.h"
static void joint_two_mac(const u8 *mac1, const u8 *mac2, u8 *out)
{
if (os_memcmp(mac1, mac2, ETH_ALEN) < 0) {
os_memcpy(out, mac1, ETH_ALEN);
os_memcpy(out + ETH_ALEN, mac2, ETH_ALEN);
} else {
os_memcpy(out, mac2, ETH_ALEN);
os_memcpy(out + ETH_ALEN, mac1, ETH_ALEN);
}
}
/* IEEE Std 802.1X-2010, 6.2.1 KDF */
static int aes_kdf_128(const u8 *kdk, const char *label, const u8 *context,
int ctx_bits, int ret_bits, u8 *ret)
{
const int h = 128;
const int r = 8;
int i, n;
int lab_len, ctx_len, ret_len, buf_len;
u8 *buf;
lab_len = os_strlen(label);
ctx_len = (ctx_bits + 7) / 8;
ret_len = ((ret_bits & 0xffff) + 7) / 8;
buf_len = lab_len + ctx_len + 4;
os_memset(ret, 0, ret_len);
n = (ret_bits + h - 1) / h;
if (n > ((0x1 << r) - 1))
return -1;
buf = os_zalloc(buf_len);
if (buf == NULL)
return -1;
os_memcpy(buf + 1, label, lab_len);
os_memcpy(buf + lab_len + 2, context, ctx_len);
WPA_PUT_BE16(&buf[buf_len - 2], ret_bits);
for (i = 0; i < n; i++) {
buf[0] = (u8) (i + 1);
if (omac1_aes_128(kdk, buf, buf_len, ret)) {
os_free(buf);
return -1;
}
ret = ret + h / 8;
}
os_free(buf);
return 0;
}
/********** AES-CMAC-128 **********/
/**
* ieee802_1x_cak_128bits_aes_cmac
*
* IEEE Std 802.1X-2010, 6.2.2
* CAK = KDF(Key, Label, mac1 | mac2, CAKlength)
*/
int ieee802_1x_cak_128bits_aes_cmac(const u8 *msk, const u8 *mac1,
const u8 *mac2, u8 *cak)
{
u8 context[2 * ETH_ALEN];
joint_two_mac(mac1, mac2, context);
return aes_kdf_128(msk, "IEEE8021 EAP CAK",
context, sizeof(context) * 8, 128, cak);
}
/**
* ieee802_1x_ckn_128bits_aes_cmac
*
* IEEE Std 802.1X-2010, 6.2.2
* CKN = KDF(Key, Label, ID | mac1 | mac2, CKNlength)
*/
int ieee802_1x_ckn_128bits_aes_cmac(const u8 *msk, const u8 *mac1,
const u8 *mac2, const u8 *sid,
size_t sid_bytes, u8 *ckn)
{
int res;
u8 *context;
size_t ctx_len = sid_bytes + ETH_ALEN * 2;
context = os_zalloc(ctx_len);
if (!context) {
wpa_printf(MSG_ERROR, "MKA-%s: out of memory", __func__);
return -1;
}
os_memcpy(context, sid, sid_bytes);
joint_two_mac(mac1, mac2, context + sid_bytes);
res = aes_kdf_128(msk, "IEEE8021 EAP CKN", context, ctx_len * 8,
128, ckn);
os_free(context);
return res;
}
/**
* ieee802_1x_kek_128bits_aes_cmac
*
* IEEE Std 802.1X-2010, 9.3.3
* KEK = KDF(Key, Label, Keyid, KEKLength)
*/
int ieee802_1x_kek_128bits_aes_cmac(const u8 *cak, const u8 *ckn,
size_t ckn_bytes, u8 *kek)
{
u8 context[16];
/* First 16 octets of CKN, with null octets appended to pad if needed */
os_memset(context, 0, sizeof(context));
os_memcpy(context, ckn, (ckn_bytes < 16) ? ckn_bytes : 16);
return aes_kdf_128(cak, "IEEE8021 KEK", context, sizeof(context) * 8,
128, kek);
}
/**
* ieee802_1x_ick_128bits_aes_cmac
*
* IEEE Std 802.1X-2010, 9.3.3
* ICK = KDF(Key, Label, Keyid, ICKLength)
*/
int ieee802_1x_ick_128bits_aes_cmac(const u8 *cak, const u8 *ckn,
size_t ckn_bytes, u8 *ick)
{
u8 context[16];
/* First 16 octets of CKN, with null octets appended to pad if needed */
os_memset(context, 0, sizeof(context));
os_memcpy(context, ckn, (ckn_bytes < 16) ? ckn_bytes : 16);
return aes_kdf_128(cak, "IEEE8021 ICK", context, sizeof(context) * 8,
128, ick);
}
/**
* ieee802_1x_icv_128bits_aes_cmac
*
* IEEE Std 802.1X-2010, 9.4.1
* ICV = AES-CMAC(ICK, M, 128)
*/
int ieee802_1x_icv_128bits_aes_cmac(const u8 *ick, const u8 *msg,
size_t msg_bytes, u8 *icv)
{
if (omac1_aes_128(ick, msg, msg_bytes, icv)) {
wpa_printf(MSG_ERROR, "MKA: omac1_aes_128 failed");
return -1;
}
return 0;
}
/**
* ieee802_1x_sak_128bits_aes_cmac
*
* IEEE Std 802.1X-2010, 9.8.1
* SAK = KDF(Key, Label, KS-nonce | MI-value list | KN, SAKLength)
*/
int ieee802_1x_sak_128bits_aes_cmac(const u8 *cak, const u8 *ctx,
size_t ctx_bytes, u8 *sak)
{
return aes_kdf_128(cak, "IEEE8021 SAK", ctx, ctx_bytes * 8, 128, sak);
}

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/*
* IEEE 802.1X-2010 Key Hierarchy
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef IEEE802_1X_KEY_H
#define IEEE802_1X_KEY_H
int ieee802_1x_cak_128bits_aes_cmac(const u8 *msk, const u8 *mac1,
const u8 *mac2, u8 *cak);
int ieee802_1x_ckn_128bits_aes_cmac(const u8 *msk, const u8 *mac1,
const u8 *mac2, const u8 *sid,
size_t sid_bytes, u8 *ckn);
int ieee802_1x_kek_128bits_aes_cmac(const u8 *cak, const u8 *ckn,
size_t ckn_bytes, u8 *kek);
int ieee802_1x_ick_128bits_aes_cmac(const u8 *cak, const u8 *ckn,
size_t ckn_bytes, u8 *ick);
int ieee802_1x_icv_128bits_aes_cmac(const u8 *ick, const u8 *msg,
size_t msg_bytes, u8 *icv);
int ieee802_1x_sak_128bits_aes_cmac(const u8 *cak, const u8 *ctx,
size_t ctx_bytes, u8 *sak);
#endif /* IEEE802_1X_KEY_H */

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/*
* SecY Operations
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "common/defs.h"
#include "drivers/driver.h"
#include "pae/ieee802_1x_kay.h"
#include "pae/ieee802_1x_kay_i.h"
#include "pae/ieee802_1x_secy_ops.h"
int secy_cp_control_validate_frames(struct ieee802_1x_kay *kay,
enum validate_frames vf)
{
kay->vf = vf;
return 0;
}
int secy_cp_control_protect_frames(struct ieee802_1x_kay *kay, Boolean enabled)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->enable_protect_frames) {
wpa_printf(MSG_ERROR,
"KaY: secy enable_protect_frames operation not supported");
return -1;
}
return ops->enable_protect_frames(ops->ctx, enabled);
}
int secy_cp_control_replay(struct ieee802_1x_kay *kay, Boolean enabled, u32 win)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->set_replay_protect) {
wpa_printf(MSG_ERROR,
"KaY: secy set_replay_protect operation not supported");
return -1;
}
return ops->set_replay_protect(ops->ctx, enabled, win);
}
int secy_cp_control_current_cipher_suite(struct ieee802_1x_kay *kay,
const u8 *cs, size_t cs_len)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->set_current_cipher_suite) {
wpa_printf(MSG_ERROR,
"KaY: secy set_current_cipher_suite operation not supported");
return -1;
}
return ops->set_current_cipher_suite(ops->ctx, cs, cs_len);
}
int secy_cp_control_confidentiality_offset(struct ieee802_1x_kay *kay,
enum confidentiality_offset co)
{
kay->co = co;
return 0;
}
int secy_cp_control_enable_port(struct ieee802_1x_kay *kay, Boolean enabled)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->enable_controlled_port) {
wpa_printf(MSG_ERROR,
"KaY: secy enable_controlled_port operation not supported");
return -1;
}
return ops->enable_controlled_port(ops->ctx, enabled);
}
int secy_get_receive_lowest_pn(struct ieee802_1x_kay *kay,
struct receive_sa *rxsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !rxsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->get_receive_lowest_pn) {
wpa_printf(MSG_ERROR,
"KaY: secy get_receive_lowest_pn operation not supported");
return -1;
}
return ops->get_receive_lowest_pn(ops->ctx,
rxsa->sc->channel,
rxsa->an,
&rxsa->lowest_pn);
}
int secy_get_transmit_next_pn(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->get_transmit_next_pn) {
wpa_printf(MSG_ERROR,
"KaY: secy get_receive_lowest_pn operation not supported");
return -1;
}
return ops->get_transmit_next_pn(ops->ctx,
txsa->sc->channel,
txsa->an,
&txsa->next_pn);
}
int secy_set_transmit_next_pn(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->set_transmit_next_pn) {
wpa_printf(MSG_ERROR,
"KaY: secy get_receive_lowest_pn operation not supported");
return -1;
}
return ops->set_transmit_next_pn(ops->ctx,
txsa->sc->channel,
txsa->an,
txsa->next_pn);
}
int secy_get_available_receive_sc(struct ieee802_1x_kay *kay, u32 *channel)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->get_available_receive_sc) {
wpa_printf(MSG_ERROR,
"KaY: secy get_available_receive_sc operation not supported");
return -1;
}
return ops->get_available_receive_sc(ops->ctx, channel);
}
int secy_create_receive_sc(struct ieee802_1x_kay *kay, struct receive_sc *rxsc)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !rxsc) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->create_receive_sc) {
wpa_printf(MSG_ERROR,
"KaY: secy create_receive_sc operation not supported");
return -1;
}
return ops->create_receive_sc(ops->ctx, rxsc->channel, &rxsc->sci,
kay->vf, kay->co);
}
int secy_delete_receive_sc(struct ieee802_1x_kay *kay, struct receive_sc *rxsc)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !rxsc) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->delete_receive_sc) {
wpa_printf(MSG_ERROR,
"KaY: secy delete_receive_sc operation not supported");
return -1;
}
return ops->delete_receive_sc(ops->ctx, rxsc->channel);
}
int secy_create_receive_sa(struct ieee802_1x_kay *kay, struct receive_sa *rxsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !rxsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->create_receive_sa) {
wpa_printf(MSG_ERROR,
"KaY: secy create_receive_sa operation not supported");
return -1;
}
return ops->create_receive_sa(ops->ctx, rxsa->sc->channel, rxsa->an,
rxsa->lowest_pn, rxsa->pkey->key);
}
int secy_enable_receive_sa(struct ieee802_1x_kay *kay, struct receive_sa *rxsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !rxsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->enable_receive_sa) {
wpa_printf(MSG_ERROR,
"KaY: secy enable_receive_sa operation not supported");
return -1;
}
rxsa->enable_receive = TRUE;
return ops->enable_receive_sa(ops->ctx, rxsa->sc->channel, rxsa->an);
}
int secy_disable_receive_sa(struct ieee802_1x_kay *kay, struct receive_sa *rxsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !rxsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->disable_receive_sa) {
wpa_printf(MSG_ERROR,
"KaY: secy disable_receive_sa operation not supported");
return -1;
}
rxsa->enable_receive = FALSE;
return ops->disable_receive_sa(ops->ctx, rxsa->sc->channel, rxsa->an);
}
int secy_get_available_transmit_sc(struct ieee802_1x_kay *kay, u32 *channel)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->get_available_transmit_sc) {
wpa_printf(MSG_ERROR,
"KaY: secy get_available_transmit_sc operation not supported");
return -1;
}
return ops->get_available_transmit_sc(ops->ctx, channel);
}
int secy_create_transmit_sc(struct ieee802_1x_kay *kay,
struct transmit_sc *txsc)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsc) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->create_transmit_sc) {
wpa_printf(MSG_ERROR,
"KaY: secy create_transmit_sc operation not supported");
return -1;
}
return ops->create_transmit_sc(ops->ctx, txsc->channel, &txsc->sci,
kay->co);
}
int secy_delete_transmit_sc(struct ieee802_1x_kay *kay,
struct transmit_sc *txsc)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsc) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->delete_transmit_sc) {
wpa_printf(MSG_ERROR,
"KaY: secy delete_transmit_sc operation not supported");
return -1;
}
return ops->delete_transmit_sc(ops->ctx, txsc->channel);
}
int secy_create_transmit_sa(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->create_transmit_sa) {
wpa_printf(MSG_ERROR,
"KaY: secy create_transmit_sa operation not supported");
return -1;
}
return ops->create_transmit_sa(ops->ctx, txsa->sc->channel, txsa->an,
txsa->next_pn, txsa->confidentiality,
txsa->pkey->key);
}
int secy_enable_transmit_sa(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->enable_transmit_sa) {
wpa_printf(MSG_ERROR,
"KaY: secy enable_transmit_sa operation not supported");
return -1;
}
txsa->enable_transmit = TRUE;
return ops->enable_transmit_sa(ops->ctx, txsa->sc->channel, txsa->an);
}
int secy_disable_transmit_sa(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay || !txsa) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->disable_transmit_sa) {
wpa_printf(MSG_ERROR,
"KaY: secy disable_transmit_sa operation not supported");
return -1;
}
txsa->enable_transmit = FALSE;
return ops->disable_transmit_sa(ops->ctx, txsa->sc->channel, txsa->an);
}
int secy_init_macsec(struct ieee802_1x_kay *kay)
{
int ret;
struct ieee802_1x_kay_ctx *ops;
struct macsec_init_params params;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->macsec_init) {
wpa_printf(MSG_ERROR,
"KaY: secy macsec_init operation not supported");
return -1;
}
params.use_es = FALSE;
params.use_scb = FALSE;
params.always_include_sci = TRUE;
ret = ops->macsec_init(ops->ctx, &params);
return ret;
}
int secy_deinit_macsec(struct ieee802_1x_kay *kay)
{
struct ieee802_1x_kay_ctx *ops;
if (!kay) {
wpa_printf(MSG_ERROR, "KaY: %s params invalid", __func__);
return -1;
}
ops = kay->ctx;
if (!ops || !ops->macsec_deinit) {
wpa_printf(MSG_ERROR,
"KaY: secy macsec_deinit operation not supported");
return -1;
}
return ops->macsec_deinit(ops->ctx);
}

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/*
* SecY Operations
* Copyright (c) 2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef IEEE802_1X_SECY_OPS_H
#define IEEE802_1X_SECY_OPS_H
#include "common/defs.h"
#include "common/ieee802_1x_defs.h"
struct ieee802_1x_kay_conf;
struct receive_sa;
struct transmit_sa;
struct receive_sc;
struct transmit_sc;
int secy_init_macsec(struct ieee802_1x_kay *kay);
int secy_deinit_macsec(struct ieee802_1x_kay *kay);
/****** CP -> SecY ******/
int secy_cp_control_validate_frames(struct ieee802_1x_kay *kay,
enum validate_frames vf);
int secy_cp_control_protect_frames(struct ieee802_1x_kay *kay, Boolean flag);
int secy_cp_control_replay(struct ieee802_1x_kay *kay, Boolean flag, u32 win);
int secy_cp_control_current_cipher_suite(struct ieee802_1x_kay *kay,
const u8 *cs, size_t cs_len);
int secy_cp_control_confidentiality_offset(struct ieee802_1x_kay *kay,
enum confidentiality_offset co);
int secy_cp_control_enable_port(struct ieee802_1x_kay *kay, Boolean flag);
/****** KaY -> SecY *******/
int secy_get_receive_lowest_pn(struct ieee802_1x_kay *kay,
struct receive_sa *rxsa);
int secy_get_transmit_next_pn(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa);
int secy_set_transmit_next_pn(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa);
int secy_get_available_receive_sc(struct ieee802_1x_kay *kay, u32 *channel);
int secy_create_receive_sc(struct ieee802_1x_kay *kay, struct receive_sc *rxsc);
int secy_delete_receive_sc(struct ieee802_1x_kay *kay, struct receive_sc *rxsc);
int secy_create_receive_sa(struct ieee802_1x_kay *kay, struct receive_sa *rxsa);
int secy_enable_receive_sa(struct ieee802_1x_kay *kay, struct receive_sa *rxsa);
int secy_disable_receive_sa(struct ieee802_1x_kay *kay,
struct receive_sa *rxsa);
int secy_get_available_transmit_sc(struct ieee802_1x_kay *kay, u32 *channel);
int secy_create_transmit_sc(struct ieee802_1x_kay *kay,
struct transmit_sc *txsc);
int secy_delete_transmit_sc(struct ieee802_1x_kay *kay,
struct transmit_sc *txsc);
int secy_create_transmit_sa(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa);
int secy_enable_transmit_sa(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa);
int secy_disable_transmit_sa(struct ieee802_1x_kay *kay,
struct transmit_sa *txsa);
#endif /* IEEE802_1X_SECY_OPS_H */