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sae: implementation

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SAE (Simultaneous Authentication of Equals) takes place during
authentication, and followed by EAPoL/4-way handshake. This
module handles the entire SAE commit/confirm exchange. This was
done similar to eapol.

SAE begins when sae_register is called. At this point a commit
message will be created and sent out which kicks off the SAE
authentication procedure.

The commit/confirm exchange is very similar to EAP-PWD, so all
the ecc utility functions could be re-used as-is. A few new ecc
utility functions were added to conform to the 80211 'blinding'
technique for computing the password element.
This commit is contained in:
James Prestwood 2018-08-13 16:25:47 -07:00 committed by Denis Kenzior
parent 920b307431
commit 220fb61128
3 changed files with 1056 additions and 0 deletions
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1
Makefile.am
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@ -111,6 +111,7 @@ src_iwd_SOURCES = src/main.c linux/nl80211.h \
src/eap-pwd.c \
src/ecc.h src/ecc.c \
src/adhoc.h src/adhoc.c \
src/sae.h src/sae.c \
$(builtin_sources)
src_iwd_LDADD = ell/libell-internal.la -ldl

1016
src/sae.c Normal file
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39
src/sae.h Normal file
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@ -0,0 +1,39 @@
/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
struct sae_sm;
struct handshake_state;
typedef int (*sae_tx_packet_func_t)(const uint8_t *dest, const uint8_t *frame,
size_t len, void *user_data);
typedef void (*sae_complete_func_t)(uint16_t status, void *user_data);
struct sae_sm *sae_sm_new(struct handshake_state *hs, sae_tx_packet_func_t tx,
sae_complete_func_t complete, void *user_data);
void sae_sm_free(struct sae_sm *sm);
void sae_rx_packet(struct sae_sm *sm, const uint8_t *src,
const uint8_t *frame, size_t len);
void sae_timeout(struct sae_sm *sm);
void sae_start(struct sae_sm *sm);