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wpa_supplicant: Write Crypto API based on mbedtls

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This commit add following crypto changes

1. Update current crypto code with upstream supplicant code
2. Add a proper porting layer to use mbedtls APIs for all the crypto
   operations used by supplicant.

Internal crypto will be used when USE_MBEDLTS flag is disabled
in supplicant's menuconfig.

This commit also removes the clutter in crypto files due to partial
porting of some APIs to mbedtls, all the code from those files have
been removed and rewritten in a generic way, this is inspired from
current upstream code.

This also reduces the lib size significantly, supplicant's lib
size reduces around ~567kb after this change(NB: lib size doesn't
indicate reduction in final bin size).
This commit is contained in:
kapil.gupta
2020-09-14 13:51:25 +05:30
committed by bot
parent a060ee8e9c
commit ae35d70359
68 changed files with 2009 additions and 1746 deletions
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26
components/wpa_supplicant/src/crypto/md5.c
View File

@@ -2,19 +2,13 @@
* MD5 hash implementation and interface functions
* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "includes.h"
#include "utils/common.h"
#include "common.h"
#include "md5.h"
#include "crypto.h"
@@ -29,14 +23,14 @@
* @mac: Buffer for the hash (16 bytes)
* Returns: 0 on success, -1 on failure
*/
int
hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
int hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
const u8 *addr[], const size_t *len, u8 *mac)
{
u8 k_pad[64]; /* padding - key XORd with ipad/opad */
u8 tk[16];
const u8 *_addr[6];
size_t i, _len[6];
int res;
if (num_elem > 5) {
/*
@@ -92,7 +86,10 @@ hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
_len[0] = 64;
_addr[1] = mac;
_len[1] = MD5_MAC_LEN;
return md5_vector(2, _addr, _len, mac);
res = md5_vector(2, _addr, _len, mac);
os_memset(k_pad, 0, sizeof(k_pad));
os_memset(tk, 0, sizeof(tk));
return res;
}
@@ -105,8 +102,7 @@ hmac_md5_vector(const u8 *key, size_t key_len, size_t num_elem,
* @mac: Buffer for the hash (16 bytes)
* Returns: 0 on success, -1 on failure
*/
int
hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
int hmac_md5(const u8 *key, size_t key_len, const u8 *data, size_t data_len,
u8 *mac)
{
return hmac_md5_vector(key, key_len, 1, &data, &data_len, mac);