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https://github.com/yuzu-emu/mbedtls.git
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Add a CRC module to mbedtls and baremetal config
Add a new CRC module along with some tests for it. The table and the CRC function body is generated using pycrc v0.9.2. Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek
parent
0305753d7a
commit
9df2b416b9
@ -137,6 +137,7 @@
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#define MBEDTLS_OID_C
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#define MBEDTLS_PLATFORM_C
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#define MBEDTLS_CRC_C
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/* I/O buffer configuration */
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#define MBEDTLS_SSL_MAX_CONTENT_LEN 2048
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@ -2728,6 +2728,17 @@
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*/
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#define MBEDTLS_ERROR_C
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/**
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* \def MBEDTLS_CRC_C
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*
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* Enable the CRC calculating module
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*
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* Module: library/crc.c
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*
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* This module enables mbedtls_crc_update.
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*/
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//#define MBEDTLS_CRC_C
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/**
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* \def MBEDTLS_GCM_C
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*
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47
include/mbedtls/crc.h
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47
include/mbedtls/crc.h
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@ -0,0 +1,47 @@
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/*
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* CRC-16/ARC implementation, generated using pycrc v0.9.2, https://pycrc.org.
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*
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* Used options: --model=crc-16 --algorithm=tbl --generate=h --std=C89 --table-idx-width 4
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*
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* Copyright (C) 2006-2020, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_CRC_H
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#define MBEDTLS_CRC_H
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#include <stdlib.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Update the crc value with new data.
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*
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* \param[in] crc The current crc value.
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* \param[in] data Pointer to a buffer of \a data_len bytes.
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* \param[in] data_len Number of bytes in the \a data buffer.
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* \return The updated crc value.
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*/
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uint16_t mbedtls_crc_update( uint16_t crc, const void *data, size_t data_len );
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#ifdef __cplusplus
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}
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#endif
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#endif /* MBEDTLS_CRC_H */
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@ -20,6 +20,7 @@ set(src_crypto
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cipher.c
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cipher_wrap.c
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cmac.c
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crc.c
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ctr_drbg.c
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des.c
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dhm.c
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@ -99,7 +99,8 @@ OBJS_CRYPTO= aes.o aesni.o arc4.o \
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ripemd160.o rsa_internal.o rsa.o \
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sha1.o sha256.o sha512.o \
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threading.o timing.o version.o \
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version_features.o xtea.o
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version_features.o xtea.o \
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crc.o
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OBJS_X509= certs.o pkcs11.o x509.o
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55
library/crc.c
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55
library/crc.c
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@ -0,0 +1,55 @@
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/*
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* CRC-16/ARC implementation, generated using pycrc v0.9.2, https://pycrc.org,
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* with further FI countermeasures added manually.
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*
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* Used options: --model=crc-16 --algorithm=tbl --generate=c --std=C89 --table-idx-width 4
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*
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* Copyright (C) 2006-2020, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_CRC_C)
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#include "mbedtls/crc.h"
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static const uint32_t crc_table[16] = {
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0x0000, 0xcc01, 0xd801, 0x1400, 0xf001, 0x3c00, 0x2800, 0xe401,
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0xa001, 0x6c00, 0x7800, 0xb401, 0x5000, 0x9c01, 0x8801, 0x4400
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};
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uint16_t mbedtls_crc_update( uint16_t crc, const void *data, size_t data_len )
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{
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const unsigned char *d = (const unsigned char *)data;
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unsigned int tbl_idx;
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while ( data_len -- ) {
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tbl_idx = crc ^ *d;
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crc = crc_table[tbl_idx & 0x0f] ^ ( crc >> 4 );
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tbl_idx = crc ^ ( *d >> 4 );
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crc = crc_table[tbl_idx & 0x0f] ^ ( crc >> 4 );
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d ++;
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}
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return crc;
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}
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#endif /* MBEDTLS_CRC_C */
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@ -684,6 +684,9 @@ static const char *features[] = {
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#if defined(MBEDTLS_ERROR_C)
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"MBEDTLS_ERROR_C",
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#endif /* MBEDTLS_ERROR_C */
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#if defined(MBEDTLS_CRC_C)
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"MBEDTLS_CRC_C",
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#endif /* MBEDTLS_CRC_C */
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#if defined(MBEDTLS_GCM_C)
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"MBEDTLS_GCM_C",
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#endif /* MBEDTLS_GCM_C */
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@ -1866,6 +1866,14 @@ int query_config( const char *config )
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}
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#endif /* MBEDTLS_ERROR_C */
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#if defined(MBEDTLS_CRC_C)
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if( strcmp( "MBEDTLS_CRC_C", config ) == 0 )
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{
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MACRO_EXPANSION_TO_STR( MBEDTLS_CRC_C );
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return( 0 );
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}
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#endif /* MBEDTLS_CRC_C */
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#if defined(MBEDTLS_GCM_C)
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if( strcmp( "MBEDTLS_GCM_C", config ) == 0 )
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{
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@ -94,6 +94,7 @@ add_test_suite(cipher cipher.misc)
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add_test_suite(cipher cipher.null)
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add_test_suite(cipher cipher.padding)
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add_test_suite(cmac)
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add_test_suite(crc)
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add_test_suite(ctr_drbg)
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add_test_suite(debug)
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add_test_suite(des)
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44
tests/suites/test_suite_crc.data
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44
tests/suites/test_suite_crc.data
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@ -0,0 +1,44 @@
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CRC-16 1 byte of 0x00
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compute_crc:"00":0
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CRC-16 8 bytes of 0x00
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compute_crc:"0000000000000000":0
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CRC-16 16 bytes of 0x00
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compute_crc:"00000000000000000000000000000000":0
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CRC-16 32 bytes of 0x00
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compute_crc:"0000000000000000000000000000000000000000000000000000000000000000":0
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CRC-16 1 byte of 0xFF
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compute_crc:"FF":16448
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CRC-16 8 bytes of 0xFF
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compute_crc:"FFFFFFFFFFFFFFFF":33857
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CRC-16 16 bytes of 0xFF
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compute_crc:"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF":28736
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CRC-16 32 bytes of 0xFF
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compute_crc:"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF":41985
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CRC-16 1 byte of 0x01
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compute_crc:"01":49345
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CRC-16 8 bytes incrementing
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compute_crc:"0123456789abcdef":62374
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CRC-16 16 bytes incrementing
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compute_crc:"0123456789abcdef0123456789abcdef":44783
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CRC-16 32 bytes incrementing
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compute_crc:"0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef":44749
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CRC-16 64 bytes incrementing
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compute_crc:"0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef":53063
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CRC-16 ascii 1 to 9 incrementing
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compute_crc:"313233343536373839":47933
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CRC-16 512 bytes of random data
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compute_crc:"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":49505
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26
tests/suites/test_suite_crc.function
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26
tests/suites/test_suite_crc.function
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@ -0,0 +1,26 @@
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/* BEGIN_HEADER */
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#include "mbedtls/crc.h"
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/* END_HEADER */
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/* BEGIN_DEPENDENCIES
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* depends_on:MBEDTLS_CRC_C
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* END_DEPENDENCIES
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*/
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/* BEGIN_CASE */
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void compute_crc( data_t *input, unsigned int crc )
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{
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uint16_t result = mbedtls_crc_update( 0, input->x, input->len );
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uint32_t len = input->len;
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TEST_ASSERT( crc == result );
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result = 0;
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while( len > 0 )
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{
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uint8_t cur_len = ( len > 8 ? 8 : len );
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result = mbedtls_crc_update( result, &input->x[ input->len - len ], cur_len );
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len -= cur_len;
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}
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TEST_ASSERT( crc == result );
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}
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/* END_CASE */
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@ -166,6 +166,7 @@
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<ClInclude Include="..\..\include\mbedtls\cmac.h" />
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<ClInclude Include="..\..\include\mbedtls\compat-1.3.h" />
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<ClInclude Include="..\..\include\mbedtls\config.h" />
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<ClInclude Include="..\..\include\mbedtls\crc.h" />
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<ClInclude Include="..\..\include\mbedtls\ctr_drbg.h" />
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<ClInclude Include="..\..\include\mbedtls\debug.h" />
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<ClInclude Include="..\..\include\mbedtls\des.h" />
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@ -243,6 +244,7 @@
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<ClCompile Include="..\..\library\cipher.c" />
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<ClCompile Include="..\..\library\cipher_wrap.c" />
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<ClCompile Include="..\..\library\cmac.c" />
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<ClCompile Include="..\..\library\crc.c" />
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<ClCompile Include="..\..\library\ctr_drbg.c" />
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<ClCompile Include="..\..\library\debug.c" />
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<ClCompile Include="..\..\library\des.c" />
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