/*
* Key reading application
*
* Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
*
* This file is part of mbed TLS (https://tls.mbed.org)
*
* 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.
*/
#if !defined(POLARSSL_CONFIG_FILE)
#include "polarssl/config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
#if defined(POLARSSL_PLATFORM_C)
#include "polarssl/platform.h"
#else
#include <stdio.h>
#define polarssl_printf printf
#endif
#if defined(POLARSSL_BIGNUM_C) && \
defined(POLARSSL_PK_PARSE_C) && defined(POLARSSL_FS_IO)
#include "polarssl/error.h"
#include "polarssl/rsa.h"
#include "polarssl/x509.h"
#include <string.h>
#endif
#define MODE_NONE 0
#define MODE_PRIVATE 1
#define MODE_PUBLIC 2
#define DFL_MODE MODE_NONE
#define DFL_FILENAME "keyfile.key"
#define DFL_PASSWORD ""
#define DFL_PASSWORD_FILE ""
#define DFL_DEBUG_LEVEL 0
#define USAGE \
"\n usage: key_app param=<>...\n" \
"\n acceptable parameters:\n" \
" mode=private|public default: none\n" \
" filename=%%s default: keyfile.key\n" \
" password=%%s default: \"\"\n" \
" password_file=%%s default: \"\"\n" \
"\n"
#if !defined(POLARSSL_BIGNUM_C) || \
!defined(POLARSSL_PK_PARSE_C) || !defined(POLARSSL_FS_IO)
int main( void )
{
polarssl_printf("POLARSSL_BIGNUM_C and/or "
"POLARSSL_PK_PARSE_C and/or POLARSSL_FS_IO not defined.\n");
return( 0 );
}
#else
/*
* global options
*/
struct options
{
int mode; /* the mode to run the application in */
const char *filename; /* filename of the key file */
const char *password; /* password for the private key */
const char *password_file; /* password_file for the private key */
} opt;
int main( int argc, char *argv[] )
{
int ret = 0;
pk_context pk;
char buf[1024];
int i;
char *p, *q;
/*
* Set to sane values
*/
pk_init( &pk );
memset( buf, 0, sizeof(buf) );
if( argc == 0 )
{
usage:
polarssl_printf( USAGE );
goto exit;
}
opt.mode = DFL_MODE;
opt.filename = DFL_FILENAME;
opt.password = DFL_PASSWORD;
opt.password_file = DFL_PASSWORD_FILE;
for( i = 1; i < argc; i++ )
{
p = argv[i];
if( ( q = strchr( p, '=' ) ) == NULL )
goto usage;
*q++ = '\0';
if( strcmp( p, "mode" ) == 0 )
{
if( strcmp( q, "private" ) == 0 )
opt.mode = MODE_PRIVATE;
else if( strcmp( q, "public" ) == 0 )
opt.mode = MODE_PUBLIC;
else
goto usage;
}
else if( strcmp( p, "filename" ) == 0 )
opt.filename = q;
else if( strcmp( p, "password" ) == 0 )
opt.password = q;
else if( strcmp( p, "password_file" ) == 0 )
opt.password_file = q;
else
goto usage;
}
if( opt.mode == MODE_PRIVATE )
{
if( strlen( opt.password ) && strlen( opt.password_file ) )
{
polarssl_printf( "Error: cannot have both password and password_file\n" );
goto usage;
}
if( strlen( opt.password_file ) )
{
FILE *f;
polarssl_printf( "\n . Loading the password file ..." );
if( ( f = fopen( opt.password_file, "rb" ) ) == NULL )
{
polarssl_printf( " failed\n ! fopen returned NULL\n" );
goto exit;
}
if( fgets( buf, sizeof(buf), f ) == NULL )
{
fclose( f );
polarssl_printf( "Error: fgets() failed to retrieve password\n" );
goto exit;
}
fclose( f );
i = (int) strlen( buf );
if( buf[i - 1] == '\n' ) buf[i - 1] = '\0';
if( buf[i - 2] == '\r' ) buf[i - 2] = '\0';
opt.password = buf;
}
/*
* 1.1. Load the key
*/
polarssl_printf( "\n . Loading the private key ..." );
fflush( stdout );
ret = pk_parse_keyfile( &pk, opt.filename, opt.password );
if( ret != 0 )
{
polarssl_printf( " failed\n ! pk_parse_keyfile returned -0x%04x\n", -ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 1.2 Print the key
*/
polarssl_printf( " . Key information ...\n" );
#if defined(POLARSSL_RSA_C)
if( pk_get_type( &pk ) == POLARSSL_PK_RSA )
{
rsa_context *rsa = pk_rsa( pk );
mpi_write_file( "N: ", &rsa->N, 16, NULL );
mpi_write_file( "E: ", &rsa->E, 16, NULL );
mpi_write_file( "D: ", &rsa->D, 16, NULL );
mpi_write_file( "P: ", &rsa->P, 16, NULL );
mpi_write_file( "Q: ", &rsa->Q, 16, NULL );
mpi_write_file( "DP: ", &rsa->DP, 16, NULL );
mpi_write_file( "DQ: ", &rsa->DQ, 16, NULL );
mpi_write_file( "QP: ", &rsa->QP, 16, NULL );
}
else
#endif
#if defined(POLARSSL_ECP_C)
if( pk_get_type( &pk ) == POLARSSL_PK_ECKEY )
{
ecp_keypair *ecp = pk_ec( pk );
mpi_write_file( "Q(X): ", &ecp->Q.X, 16, NULL );
mpi_write_file( "Q(Y): ", &ecp->Q.Y, 16, NULL );
mpi_write_file( "Q(Z): ", &ecp->Q.Z, 16, NULL );
mpi_write_file( "D : ", &ecp->d , 16, NULL );
}
else
#endif
{
polarssl_printf("Do not know how to print key information for this type\n" );
goto exit;
}
}
else if( opt.mode == MODE_PUBLIC )
{
/*
* 1.1. Load the key
*/
polarssl_printf( "\n . Loading the public key ..." );
fflush( stdout );
ret = pk_parse_public_keyfile( &pk, opt.filename );
if( ret != 0 )
{
polarssl_printf( " failed\n ! pk_parse_public_keyfile returned -0x%04x\n", -ret );
goto exit;
}
polarssl_printf( " ok\n" );
polarssl_printf( " . Key information ...\n" );
#if defined(POLARSSL_RSA_C)
if( pk_get_type( &pk ) == POLARSSL_PK_RSA )
{
rsa_context *rsa = pk_rsa( pk );
mpi_write_file( "N: ", &rsa->N, 16, NULL );
mpi_write_file( "E: ", &rsa->E, 16, NULL );
}
else
#endif
#if defined(POLARSSL_ECP_C)
if( pk_get_type( &pk ) == POLARSSL_PK_ECKEY )
{
ecp_keypair *ecp = pk_ec( pk );
mpi_write_file( "Q(X): ", &ecp->Q.X, 16, NULL );
mpi_write_file( "Q(Y): ", &ecp->Q.Y, 16, NULL );
mpi_write_file( "Q(Z): ", &ecp->Q.Z, 16, NULL );
}
else
#endif
{
polarssl_printf("Do not know how to print key information for this type\n" );
goto exit;
}
}
else
goto usage;
exit:
#if defined(POLARSSL_ERROR_C)
polarssl_strerror( ret, buf, sizeof(buf) );
polarssl_printf( " ! Last error was: %s\n", buf );
#endif
pk_free( &pk );
#if defined(_WIN32)
polarssl_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_PK_PARSE_C && POLARSSL_FS_IO */