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usr / src / contrib / wpa / src / eap_common /

📁 ..
📄 chap.c(602 B)
📄 chap.h(388 B)
📄 eap_common.c(7.31 KB)
📄 eap_common.h(905 B)
📄 eap_defs.h(3.43 KB)
📄 eap_eke_common.c(16.75 KB)
📄 eap_eke_common.h(3.47 KB)
📄 eap_fast_common.c(7.19 KB)
📄 eap_fast_common.h(2.87 KB)
📄 eap_gpsk_common.c(14.28 KB)
📄 eap_gpsk_common.h(2 KB)
📄 eap_ikev2_common.c(2.78 KB)
📄 eap_ikev2_common.h(832 B)
📄 eap_pax_common.c(4.4 KB)
📄 eap_pax_common.h(2.2 KB)
📄 eap_peap_common.c(1.74 KB)
📄 eap_peap_common.h(425 B)
📄 eap_psk_common.c(1.52 KB)
📄 eap_psk_common.h(1.72 KB)
📄 eap_pwd_common.c(12.25 KB)
📄 eap_pwd_common.h(2.62 KB)
📄 eap_sake_common.c(10.64 KB)
📄 eap_sake_common.h(2.41 KB)
📄 eap_sim_common.c(31.96 KB)
📄 eap_sim_common.h(7.62 KB)
📄 eap_teap_common.c(20.43 KB)
📄 eap_teap_common.h(5.67 KB)
📄 eap_tlv_common.h(2.57 KB)
📄 eap_ttls.h(1.58 KB)
📄 eap_wsc_common.c(784 B)
📄 eap_wsc_common.h(644 B)
📄 ikev2_common.c(17.17 KB)
📄 ikev2_common.h(8.11 KB)

Editing: eap_psk_common.c

/*
 * EAP server/peer: EAP-PSK shared routines
 * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "crypto/aes_wrap.h"
#include "eap_defs.h"
#include "eap_psk_common.h"

#define aes_block_size 16

int eap_psk_key_setup(const u8 *psk, u8 *ak, u8 *kdk)
{
	os_memset(ak, 0, aes_block_size);
	if (aes_128_encrypt_block(psk, ak, ak))
		return -1;
	os_memcpy(kdk, ak, aes_block_size);
	ak[aes_block_size - 1] ^= 0x01;
	kdk[aes_block_size - 1] ^= 0x02;
	if (aes_128_encrypt_block(psk, ak, ak) ||
	    aes_128_encrypt_block(psk, kdk, kdk))
		return -1;
	return 0;
}

int eap_psk_derive_keys(const u8 *kdk, const u8 *rand_p, u8 *tek, u8 *msk,
			u8 *emsk)
{
	u8 hash[aes_block_size];
	u8 counter = 1;
	int i;

if (aes_128_encrypt_block(kdk, rand_p, hash))
		return -1;

hash[aes_block_size - 1] ^= counter;
	if (aes_128_encrypt_block(kdk, hash, tek))
		return -1;
	hash[aes_block_size - 1] ^= counter;
	counter++;

for (i = 0; i < EAP_MSK_LEN / aes_block_size; i++) {
		hash[aes_block_size - 1] ^= counter;
		if (aes_128_encrypt_block(kdk, hash, &msk[i * aes_block_size]))
			return -1;
		hash[aes_block_size - 1] ^= counter;
		counter++;
	}

for (i = 0; i < EAP_EMSK_LEN / aes_block_size; i++) {
		hash[aes_block_size - 1] ^= counter;
		if (aes_128_encrypt_block(kdk, hash,
					  &emsk[i * aes_block_size]))
			return -1;
		hash[aes_block_size - 1] ^= counter;
		counter++;
	}

return 0;
}

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Editing: eap_psk_common.c

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