yuzu/externals/mbedtls/programs/pkey/pk_sign.c

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2020-12-28 19:15:37 +04:00
/*
* Public key-based signature creation program
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: GPL-2.0
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdio.h>
#include <stdlib.h>
#define mbedtls_snprintf snprintf
#define mbedtls_printf printf
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
#endif /* MBEDTLS_PLATFORM_C */
#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) || \
!defined(MBEDTLS_SHA256_C) || !defined(MBEDTLS_MD_C) || \
!defined(MBEDTLS_PK_PARSE_C) || !defined(MBEDTLS_FS_IO) || \
!defined(MBEDTLS_CTR_DRBG_C)
int main( void )
{
mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
"MBEDTLS_SHA256_C and/or MBEDTLS_MD_C and/or "
"MBEDTLS_PK_PARSE_C and/or MBEDTLS_FS_IO and/or "
"MBEDTLS_CTR_DRBG_C not defined.\n");
return( 0 );
}
#else
#include "mbedtls/error.h"
#include "mbedtls/entropy.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/md.h"
#include "mbedtls/pk.h"
#include <stdio.h>
#include <string.h>
int main( int argc, char *argv[] )
{
FILE *f;
int ret = 1;
int exit_code = MBEDTLS_EXIT_FAILURE;
mbedtls_pk_context pk;
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
unsigned char hash[32];
unsigned char buf[MBEDTLS_MPI_MAX_SIZE];
char filename[512];
const char *pers = "mbedtls_pk_sign";
size_t olen = 0;
mbedtls_entropy_init( &entropy );
mbedtls_ctr_drbg_init( &ctr_drbg );
mbedtls_pk_init( &pk );
if( argc != 3 )
{
mbedtls_printf( "usage: mbedtls_pk_sign <key_file> <filename>\n" );
#if defined(_WIN32)
mbedtls_printf( "\n" );
#endif
goto exit;
}
mbedtls_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%04x\n", -ret );
goto exit;
}
mbedtls_printf( "\n . Reading private key from '%s'", argv[1] );
fflush( stdout );
if( ( ret = mbedtls_pk_parse_keyfile( &pk, argv[1], "" ) ) != 0 )
{
mbedtls_printf( " failed\n ! Could not parse '%s'\n", argv[1] );
goto exit;
}
/*
* Compute the SHA-256 hash of the input file,
* then calculate the signature of the hash.
*/
mbedtls_printf( "\n . Generating the SHA-256 signature" );
fflush( stdout );
if( ( ret = mbedtls_md_file(
mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 ),
argv[2], hash ) ) != 0 )
{
mbedtls_printf( " failed\n ! Could not open or read %s\n\n", argv[2] );
goto exit;
}
if( ( ret = mbedtls_pk_sign( &pk, MBEDTLS_MD_SHA256, hash, 0, buf, &olen,
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_pk_sign returned -0x%04x\n", -ret );
goto exit;
}
/*
* Write the signature into <filename>.sig
*/
mbedtls_snprintf( filename, sizeof(filename), "%s.sig", argv[2] );
if( ( f = fopen( filename, "wb+" ) ) == NULL )
{
mbedtls_printf( " failed\n ! Could not create %s\n\n", filename );
goto exit;
}
if( fwrite( buf, 1, olen, f ) != olen )
{
mbedtls_printf( "failed\n ! fwrite failed\n\n" );
fclose( f );
goto exit;
}
fclose( f );
mbedtls_printf( "\n . Done (created \"%s\")\n\n", filename );
exit_code = MBEDTLS_EXIT_SUCCESS;
exit:
mbedtls_pk_free( &pk );
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_entropy_free( &entropy );
#if defined(MBEDTLS_ERROR_C)
if( exit_code != MBEDTLS_EXIT_SUCCESS )
{
mbedtls_strerror( ret, (char *) buf, sizeof(buf) );
mbedtls_printf( " ! Last error was: %s\n", buf );
}
#endif
#if defined(_WIN32)
mbedtls_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( exit_code );
}
#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C &&
MBEDTLS_SHA256_C && MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO &&
MBEDTLS_CTR_DRBG_C */