mirror of
https://github.com/yuzu-emu/mbedtls.git
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3b0c430638
This is done to account for platforms, for which we want custom behavior upon the program termination, hence we call `mbedtls_exit()` instead of returning from `main()`. For the sake of consistency, introduces the modifications have been made to the test and utility examples as well. These, while less likely to be used in the low level environments, won't suffer from such a change.
154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/*
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* Public key-based signature verification program
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*
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* Copyright (C) 2006-2015, 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_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#define mbedtls_snprintf snprintf
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#define mbedtls_printf printf
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#define mbedtls_exit exit
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif /* MBEDTLS_PLATFORM_C */
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#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_MD_C) || \
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!defined(MBEDTLS_SHA256_C) || !defined(MBEDTLS_PK_PARSE_C) || \
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!defined(MBEDTLS_FS_IO)
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int main( void )
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{
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mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_MD_C and/or "
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"MBEDTLS_SHA256_C and/or MBEDTLS_PK_PARSE_C and/or "
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"MBEDTLS_FS_IO not defined.\n");
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mbedtls_exit( 0 );
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}
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#else
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#include "mbedtls/error.h"
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#include "mbedtls/md.h"
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#include "mbedtls/pk.h"
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#include <stdio.h>
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#include <string.h>
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int main( int argc, char *argv[] )
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{
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FILE *f;
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int ret = 1;
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int exit_code = MBEDTLS_EXIT_FAILURE;
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size_t i;
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mbedtls_pk_context pk;
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unsigned char hash[32];
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unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
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char filename[512];
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mbedtls_pk_init( &pk );
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if( argc != 3 )
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{
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mbedtls_printf( "usage: mbedtls_pk_verify <key_file> <filename>\n" );
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#if defined(_WIN32)
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mbedtls_printf( "\n" );
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#endif
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goto exit;
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}
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mbedtls_printf( "\n . Reading public key from '%s'", argv[1] );
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fflush( stdout );
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if( ( ret = mbedtls_pk_parse_public_keyfile( &pk, argv[1] ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_pk_parse_public_keyfile returned -0x%04x\n", -ret );
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goto exit;
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}
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/*
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* Extract the signature from the file
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*/
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mbedtls_snprintf( filename, sizeof(filename), "%s.sig", argv[2] );
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if( ( f = fopen( filename, "rb" ) ) == NULL )
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{
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mbedtls_printf( "\n ! Could not open %s\n\n", filename );
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goto exit;
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}
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i = fread( buf, 1, sizeof(buf), f );
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fclose( f );
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/*
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* Compute the SHA-256 hash of the input file and
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* verify the signature
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*/
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mbedtls_printf( "\n . Verifying the SHA-256 signature" );
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fflush( stdout );
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if( ( ret = mbedtls_md_file(
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mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 ),
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argv[2], hash ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! Could not open or read %s\n\n", argv[2] );
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goto exit;
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}
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if( ( ret = mbedtls_pk_verify( &pk, MBEDTLS_MD_SHA256, hash, 0,
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buf, i ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_pk_verify returned -0x%04x\n", -ret );
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goto exit;
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}
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mbedtls_printf( "\n . OK (the signature is valid)\n\n" );
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exit_code = MBEDTLS_EXIT_SUCCESS;
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exit:
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mbedtls_pk_free( &pk );
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#if defined(MBEDTLS_ERROR_C)
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if( exit_code != MBEDTLS_EXIT_SUCCESS )
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{
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mbedtls_strerror( ret, (char *) buf, sizeof(buf) );
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mbedtls_printf( " ! Last error was: %s\n", buf );
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}
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#endif
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#if defined(_WIN32)
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mbedtls_printf( " + Press Enter to exit this program.\n" );
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fflush( stdout ); getchar();
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#endif
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mbedtls_exit( exit_code );
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}
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#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_SHA256_C &&
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MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO */
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