mirror of
https://github.com/yuzu-emu/mbedtls
synced 2024-11-24 21:38:23 +00:00
604d399a5c
The sample application programs/pkey/gen_key.c uses the library function mbedtls_pk_write_key_pem() which is dependent on the configuration option MBEDTLS_PEM_WRITE_C. If the option isn't defined the build breaks. This change adds the compilation condition MBEDTLS_PEM_WRITE_C to the gen_key.c sample application.
425 lines
12 KiB
C
425 lines
12 KiB
C
/*
|
|
* Key generation application
|
|
*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* 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 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>
|
|
#define mbedtls_printf printf
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PK_WRITE_C) && defined(MBEDTLS_FS_IO) && \
|
|
defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_CTR_DRBG_C)
|
|
#include "mbedtls/error.h"
|
|
#include "mbedtls/pk.h"
|
|
#include "mbedtls/ecdsa.h"
|
|
#include "mbedtls/rsa.h"
|
|
#include "mbedtls/error.h"
|
|
#include "mbedtls/entropy.h"
|
|
#include "mbedtls/ctr_drbg.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#if !defined(_WIN32)
|
|
#include <unistd.h>
|
|
|
|
#define DEV_RANDOM_THRESHOLD 32
|
|
|
|
int dev_random_entropy_poll( void *data, unsigned char *output,
|
|
size_t len, size_t *olen )
|
|
{
|
|
FILE *file;
|
|
size_t ret, left = len;
|
|
unsigned char *p = output;
|
|
((void) data);
|
|
|
|
*olen = 0;
|
|
|
|
file = fopen( "/dev/random", "rb" );
|
|
if( file == NULL )
|
|
return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
|
|
|
|
while( left > 0 )
|
|
{
|
|
/* /dev/random can return much less than requested. If so, try again */
|
|
ret = fread( p, 1, left, file );
|
|
if( ret == 0 && ferror( file ) )
|
|
{
|
|
fclose( file );
|
|
return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
|
|
}
|
|
|
|
p += ret;
|
|
left -= ret;
|
|
sleep( 1 );
|
|
}
|
|
fclose( file );
|
|
*olen = len;
|
|
|
|
return( 0 );
|
|
}
|
|
#endif /* !_WIN32 */
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_ECP_C)
|
|
#define DFL_EC_CURVE mbedtls_ecp_curve_list()->grp_id
|
|
#else
|
|
#define DFL_EC_CURVE 0
|
|
#endif
|
|
|
|
#if !defined(_WIN32) && defined(MBEDTLS_FS_IO)
|
|
#define USAGE_DEV_RANDOM \
|
|
" use_dev_random=0|1 default: 0\n"
|
|
#else
|
|
#define USAGE_DEV_RANDOM ""
|
|
#endif /* !_WIN32 && MBEDTLS_FS_IO */
|
|
|
|
#define FORMAT_PEM 0
|
|
#define FORMAT_DER 1
|
|
|
|
#define DFL_TYPE MBEDTLS_PK_RSA
|
|
#define DFL_RSA_KEYSIZE 4096
|
|
#define DFL_FILENAME "keyfile.key"
|
|
#define DFL_FORMAT FORMAT_PEM
|
|
#define DFL_USE_DEV_RANDOM 0
|
|
|
|
#define USAGE \
|
|
"\n usage: gen_key param=<>...\n" \
|
|
"\n acceptable parameters:\n" \
|
|
" type=rsa|ec default: rsa\n" \
|
|
" rsa_keysize=%%d default: 4096\n" \
|
|
" ec_curve=%%s see below\n" \
|
|
" filename=%%s default: keyfile.key\n" \
|
|
" format=pem|der default: pem\n" \
|
|
USAGE_DEV_RANDOM \
|
|
"\n"
|
|
|
|
#if !defined(MBEDTLS_PK_WRITE_C) || !defined(MBEDTLS_PEM_WRITE_C) || \
|
|
!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_ENTROPY_C) || \
|
|
!defined(MBEDTLS_CTR_DRBG_C)
|
|
int main( void )
|
|
{
|
|
mbedtls_printf( "MBEDTLS_PK_WRITE_C and/or MBEDTLS_FS_IO and/or "
|
|
"MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
|
|
"MBEDTLS_PEM_WRITE_C"
|
|
"not defined.\n" );
|
|
return( 0 );
|
|
}
|
|
#else
|
|
/*
|
|
* global options
|
|
*/
|
|
struct options
|
|
{
|
|
int type; /* the type of key to generate */
|
|
int rsa_keysize; /* length of key in bits */
|
|
int ec_curve; /* curve identifier for EC keys */
|
|
const char *filename; /* filename of the key file */
|
|
int format; /* the output format to use */
|
|
int use_dev_random; /* use /dev/random as entropy source */
|
|
} opt;
|
|
|
|
static int write_private_key( mbedtls_pk_context *key, const char *output_file )
|
|
{
|
|
int ret;
|
|
FILE *f;
|
|
unsigned char output_buf[16000];
|
|
unsigned char *c = output_buf;
|
|
size_t len = 0;
|
|
|
|
memset(output_buf, 0, 16000);
|
|
if( opt.format == FORMAT_PEM )
|
|
{
|
|
if( ( ret = mbedtls_pk_write_key_pem( key, output_buf, 16000 ) ) != 0 )
|
|
return( ret );
|
|
|
|
len = strlen( (char *) output_buf );
|
|
}
|
|
else
|
|
{
|
|
if( ( ret = mbedtls_pk_write_key_der( key, output_buf, 16000 ) ) < 0 )
|
|
return( ret );
|
|
|
|
len = ret;
|
|
c = output_buf + sizeof(output_buf) - len;
|
|
}
|
|
|
|
if( ( f = fopen( output_file, "wb" ) ) == NULL )
|
|
return( -1 );
|
|
|
|
if( fwrite( c, 1, len, f ) != len )
|
|
{
|
|
fclose( f );
|
|
return( -1 );
|
|
}
|
|
|
|
fclose( f );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
int ret = 0;
|
|
mbedtls_pk_context key;
|
|
char buf[1024];
|
|
int i;
|
|
char *p, *q;
|
|
mbedtls_entropy_context entropy;
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
|
const char *pers = "gen_key";
|
|
#if defined(MBEDTLS_ECP_C)
|
|
const mbedtls_ecp_curve_info *curve_info;
|
|
#endif
|
|
|
|
/*
|
|
* Set to sane values
|
|
*/
|
|
mbedtls_pk_init( &key );
|
|
mbedtls_ctr_drbg_init( &ctr_drbg );
|
|
memset( buf, 0, sizeof( buf ) );
|
|
|
|
if( argc == 0 )
|
|
{
|
|
usage:
|
|
ret = 1;
|
|
mbedtls_printf( USAGE );
|
|
#if defined(MBEDTLS_ECP_C)
|
|
mbedtls_printf( " available ec_curve values:\n" );
|
|
curve_info = mbedtls_ecp_curve_list();
|
|
mbedtls_printf( " %s (default)\n", curve_info->name );
|
|
while( ( ++curve_info )->name != NULL )
|
|
mbedtls_printf( " %s\n", curve_info->name );
|
|
#endif
|
|
goto exit;
|
|
}
|
|
|
|
opt.type = DFL_TYPE;
|
|
opt.rsa_keysize = DFL_RSA_KEYSIZE;
|
|
opt.ec_curve = DFL_EC_CURVE;
|
|
opt.filename = DFL_FILENAME;
|
|
opt.format = DFL_FORMAT;
|
|
opt.use_dev_random = DFL_USE_DEV_RANDOM;
|
|
|
|
for( i = 1; i < argc; i++ )
|
|
{
|
|
p = argv[i];
|
|
if( ( q = strchr( p, '=' ) ) == NULL )
|
|
goto usage;
|
|
*q++ = '\0';
|
|
|
|
if( strcmp( p, "type" ) == 0 )
|
|
{
|
|
if( strcmp( q, "rsa" ) == 0 )
|
|
opt.type = MBEDTLS_PK_RSA;
|
|
else if( strcmp( q, "ec" ) == 0 )
|
|
opt.type = MBEDTLS_PK_ECKEY;
|
|
else
|
|
goto usage;
|
|
}
|
|
else if( strcmp( p, "format" ) == 0 )
|
|
{
|
|
if( strcmp( q, "pem" ) == 0 )
|
|
opt.format = FORMAT_PEM;
|
|
else if( strcmp( q, "der" ) == 0 )
|
|
opt.format = FORMAT_DER;
|
|
else
|
|
goto usage;
|
|
}
|
|
else if( strcmp( p, "rsa_keysize" ) == 0 )
|
|
{
|
|
opt.rsa_keysize = atoi( q );
|
|
if( opt.rsa_keysize < 1024 ||
|
|
opt.rsa_keysize > MBEDTLS_MPI_MAX_BITS )
|
|
goto usage;
|
|
}
|
|
#if defined(MBEDTLS_ECP_C)
|
|
else if( strcmp( p, "ec_curve" ) == 0 )
|
|
{
|
|
if( ( curve_info = mbedtls_ecp_curve_info_from_name( q ) ) == NULL )
|
|
goto usage;
|
|
opt.ec_curve = curve_info->grp_id;
|
|
}
|
|
#endif
|
|
else if( strcmp( p, "filename" ) == 0 )
|
|
opt.filename = q;
|
|
else if( strcmp( p, "use_dev_random" ) == 0 )
|
|
{
|
|
opt.use_dev_random = atoi( q );
|
|
if( opt.use_dev_random < 0 || opt.use_dev_random > 1 )
|
|
goto usage;
|
|
}
|
|
else
|
|
goto usage;
|
|
}
|
|
|
|
mbedtls_printf( "\n . Seeding the random number generator..." );
|
|
fflush( stdout );
|
|
|
|
mbedtls_entropy_init( &entropy );
|
|
#if !defined(_WIN32) && defined(MBEDTLS_FS_IO)
|
|
if( opt.use_dev_random )
|
|
{
|
|
if( ( ret = mbedtls_entropy_add_source( &entropy, dev_random_entropy_poll,
|
|
NULL, DEV_RANDOM_THRESHOLD,
|
|
MBEDTLS_ENTROPY_SOURCE_STRONG ) ) != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_entropy_add_source returned -0x%04x\n", -ret );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf("\n Using /dev/random, so can take a long time! " );
|
|
fflush( stdout );
|
|
}
|
|
#endif /* !_WIN32 && MBEDTLS_FS_IO */
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* 1.1. Generate the key
|
|
*/
|
|
mbedtls_printf( "\n . Generating the private key ..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = mbedtls_pk_setup( &key, mbedtls_pk_info_from_type( opt.type ) ) ) != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_pk_setup returned -0x%04x", -ret );
|
|
goto exit;
|
|
}
|
|
|
|
#if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_GENPRIME)
|
|
if( opt.type == MBEDTLS_PK_RSA )
|
|
{
|
|
ret = mbedtls_rsa_gen_key( mbedtls_pk_rsa( key ), mbedtls_ctr_drbg_random, &ctr_drbg,
|
|
opt.rsa_keysize, 65537 );
|
|
if( ret != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_rsa_gen_key returned -0x%04x", -ret );
|
|
goto exit;
|
|
}
|
|
}
|
|
else
|
|
#endif /* MBEDTLS_RSA_C */
|
|
#if defined(MBEDTLS_ECP_C)
|
|
if( opt.type == MBEDTLS_PK_ECKEY )
|
|
{
|
|
ret = mbedtls_ecp_gen_key( opt.ec_curve, mbedtls_pk_ec( key ),
|
|
mbedtls_ctr_drbg_random, &ctr_drbg );
|
|
if( ret != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n ! mbedtls_rsa_gen_key returned -0x%04x", -ret );
|
|
goto exit;
|
|
}
|
|
}
|
|
else
|
|
#endif /* MBEDTLS_ECP_C */
|
|
{
|
|
mbedtls_printf( " failed\n ! key type not supported\n" );
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* 1.2 Print the key
|
|
*/
|
|
mbedtls_printf( " ok\n . Key information:\n" );
|
|
|
|
#if defined(MBEDTLS_RSA_C)
|
|
if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_RSA )
|
|
{
|
|
mbedtls_rsa_context *rsa = mbedtls_pk_rsa( key );
|
|
mbedtls_mpi_write_file( "N: ", &rsa->N, 16, NULL );
|
|
mbedtls_mpi_write_file( "E: ", &rsa->E, 16, NULL );
|
|
mbedtls_mpi_write_file( "D: ", &rsa->D, 16, NULL );
|
|
mbedtls_mpi_write_file( "P: ", &rsa->P, 16, NULL );
|
|
mbedtls_mpi_write_file( "Q: ", &rsa->Q, 16, NULL );
|
|
mbedtls_mpi_write_file( "DP: ", &rsa->DP, 16, NULL );
|
|
mbedtls_mpi_write_file( "DQ: ", &rsa->DQ, 16, NULL );
|
|
mbedtls_mpi_write_file( "QP: ", &rsa->QP, 16, NULL );
|
|
}
|
|
else
|
|
#endif
|
|
#if defined(MBEDTLS_ECP_C)
|
|
if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_ECKEY )
|
|
{
|
|
mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( key );
|
|
mbedtls_printf( "curve: %s\n",
|
|
mbedtls_ecp_curve_info_from_grp_id( ecp->grp.id )->name );
|
|
mbedtls_mpi_write_file( "X_Q: ", &ecp->Q.X, 16, NULL );
|
|
mbedtls_mpi_write_file( "Y_Q: ", &ecp->Q.Y, 16, NULL );
|
|
mbedtls_mpi_write_file( "D: ", &ecp->d , 16, NULL );
|
|
}
|
|
else
|
|
#endif
|
|
mbedtls_printf(" ! key type not supported\n");
|
|
|
|
/*
|
|
* 1.3 Export key
|
|
*/
|
|
mbedtls_printf( " . Writing key to file..." );
|
|
|
|
if( ( ret = write_private_key( &key, opt.filename ) ) != 0 )
|
|
{
|
|
mbedtls_printf( " failed\n" );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
exit:
|
|
|
|
if( ret != 0 && ret != 1)
|
|
{
|
|
#ifdef MBEDTLS_ERROR_C
|
|
mbedtls_strerror( ret, buf, sizeof( buf ) );
|
|
mbedtls_printf( " - %s\n", buf );
|
|
#else
|
|
mbedtls_printf("\n");
|
|
#endif
|
|
}
|
|
|
|
mbedtls_pk_free( &key );
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
|
mbedtls_entropy_free( &entropy );
|
|
|
|
#if defined(_WIN32)
|
|
mbedtls_printf( " + Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
return( ret );
|
|
}
|
|
#endif /* MBEDTLS_PK_WRITE_C && MBEDTLS_PEM_WRITE_C && MBEDTLS_FS_IO &&
|
|
* MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */
|
|
|