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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 639e7ad494
commit ad7cb5f5c1
68 changed files with 2009 additions and 1746 deletions
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78
components/wpa_supplicant/src/crypto/sha256-internal.c
View File

@@ -2,83 +2,17 @@
* SHA-256 hash implementation and interface functions
* Copyright (c) 2003-2011, 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.
*/
/*
* Hardware crypto support Copyright 2017-2019 Espressif Systems (Shanghai) PTE LTD
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* 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"
#ifdef USE_MBEDTLS_CRYPTO
#include "mbedtls/sha256.h"
#else /* USE_MBEDTLS_CRYPTO */
#include "common.h"
#include "sha256.h"
#include "sha256_i.h"
#include "crypto.h"
#endif /* USE_MBEDTLS_CRYPTO */
#ifdef USE_MBEDTLS_CRYPTO
/**
* sha256_vector - SHA256 hash for data vector
* @num_elem: Number of elements in the data vector
* @addr: Pointers to the data areas
* @len: Lengths of the data blocks
* @mac: Buffer for the hash
* Returns: 0 on success, -1 of failure
*/
int
sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
u8 *mac)
{
int ret = 0;
mbedtls_sha256_context ctx;
mbedtls_sha256_init(&ctx);
if (mbedtls_sha256_starts_ret(&ctx, 0) != 0) {
ret = -1;
goto out;
}
for(size_t index = 0; index < num_elem; index++) {
if (mbedtls_sha256_update_ret(&ctx, addr[index], len[index]) != 0) {
ret = -1;
goto out;
}
}
if (mbedtls_sha256_finish_ret(&ctx, mac) != 0) {
ret = -1;
goto out;
}
out:
mbedtls_sha256_free(&ctx);
return ret;
}
#else /* USE_MBEDTLS_CRYPTO */
/**
* sha256_vector - SHA256 hash for data vector
@@ -94,6 +28,9 @@ int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
struct sha256_state ctx;
size_t i;
if (TEST_FAIL())
return -1;
sha256_init(&ctx);
for (i = 0; i < num_elem; i++)
if (sha256_process(&ctx, addr[i], len[i]))
@@ -288,6 +225,5 @@ int sha256_done(struct sha256_state *md, unsigned char *out)
return 0;
}
#endif /* USE_MBEDTLS_CRYPTO */
/* ===== end - public domain SHA256 implementation ===== */