/** @file pass_phrase.c
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*
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* @brief This file defines passphase hash
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*
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* Copyright (C) 2014-2017, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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*/
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/******************************************************
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Change log:
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03/07/2014: Initial version
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******************************************************/
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#include "wl_macros.h"
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#include "pass_phrase.h"
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//#include "keyMgmtSta.h"
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#include "sha1.h"
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#include "hostsa_ext_def.h"
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#include "authenticator.h"
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static INLINE t_u32
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pass_strlen(const char *str)
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{
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t_u32 i;
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for (i = 0; str[i] != 0; i++) {
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}
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return i;
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}
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/*
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* F(P, S, c, i) = U1 xor U2 xor ... Uc
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* U1 = PRF(P, S || Int(i))
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* U2 = PRF(P, U1)
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* Uc = PRF(P, Uc-1)
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*/
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void
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Mrvl_F(void *priv, char *password, unsigned char *ssid, int ssidlength,
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int iterations, int count, unsigned char *output)
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{
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phostsa_private psapriv = (phostsa_private)priv;
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hostsa_util_fns *util_fns = &psapriv->util_fns;
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static unsigned char digest[36], digest1[A_SHA_DIGEST_LEN];
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int i, j;
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int len = pass_strlen(password);
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int tmpLen = ssidlength + 4;
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unsigned char *pTemp = digest;
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/* U1 = PRF(P, S || int(i)) */
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memcpy(util_fns, digest, ssid, ssidlength);
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digest[ssidlength] = (unsigned char)((count >> 24) & 0xff);
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digest[ssidlength + 1] = (unsigned char)((count >> 16) & 0xff);
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digest[ssidlength + 2] = (unsigned char)((count >> 8) & 0xff);
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digest[ssidlength + 3] = (unsigned char)(count & 0xff);
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Mrvl_hmac_sha1((void *)priv, &pTemp,
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&tmpLen,
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1,
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(unsigned char *)password,
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len, digest1, A_SHA_DIGEST_LEN);
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/* output = U1 */
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memcpy(util_fns, output, digest1, A_SHA_DIGEST_LEN);
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pTemp = digest1;
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for (i = 1; i < iterations; i++) {
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tmpLen = A_SHA_DIGEST_LEN;
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/* Un = PRF(P, Un-1) */
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Mrvl_hmac_sha1((void *)priv, &pTemp,
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&tmpLen,
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1,
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(unsigned char *)password,
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len, digest, A_SHA_DIGEST_LEN);
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memcpy(util_fns, digest1, digest, A_SHA_DIGEST_LEN);
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/* output = output xor Un */
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for (j = 0; j < A_SHA_DIGEST_LEN; j++) {
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output[j] ^= digest[j];
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}
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}
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}
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/*
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* password - ascii string up to 63 characters in length
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* ssid - octet string up to 32 octets
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* ssidlength - length of ssid in octets
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* output must be 32 octets in length and outputs 256 bits of key
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*/
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int
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Mrvl_PasswordHash(void *priv, char *password, unsigned char *ssid,
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int ssidlength, unsigned char *output)
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{
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phostsa_private psapriv = (phostsa_private)priv;
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hostsa_util_fns *util_fns = &psapriv->util_fns;
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if ((pass_strlen(password) > 63) || (ssidlength > 32)) {
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return 0;
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}
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Mrvl_F((void *)priv, password, ssid, ssidlength, 4096, 2, output);
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memcpy(util_fns, output + A_SHA_DIGEST_LEN, output, 12);
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Mrvl_F((void *)priv, password, ssid, ssidlength, 4096, 1, output);
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return 1;
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}
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