mbedtls/programs/pkey/key_app.c
2013-07-08 15:31:18 +02:00

239 lines
6.6 KiB
C

/*
* Key reading application
*
* Copyright (C) 2006-2013, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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.
*/
#ifndef _CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE 1
#endif
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "polarssl/config.h"
#include "polarssl/error.h"
#include "polarssl/rsa.h"
#include "polarssl/x509.h"
#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
/*
* 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;
#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_RSA_C) || \
!defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_FS_IO)
int main( int argc, char *argv[] )
{
((void) argc);
((void) argv);
printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
"POLARSSL_X509_PARSE_C and/or POLARSSL_FS_IO not defined.\n");
return( 0 );
}
#else
int main( int argc, char *argv[] )
{
int ret = 0;
rsa_context rsa;
char buf[1024];
int i;
char *p, *q;
/*
* Set to sane values
*/
memset( &rsa, 0, sizeof( rsa_context ) );
memset( buf, 0, 1024 );
if( argc == 0 )
{
usage:
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 ) )
{
printf( "Error: cannot have both password and password_file\n" );
goto usage;
}
if( strlen( opt.password_file ) )
{
FILE *f;
printf( "\n . Loading the password file ..." );
if( ( f = fopen( opt.password_file, "rb" ) ) == NULL )
{
printf( " failed\n ! fopen returned NULL\n" );
goto exit;
}
fgets( buf, 1024, f );
fclose( f );
i = 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
*/
printf( "\n . Loading the private key ..." );
fflush( stdout );
ret = x509parse_keyfile_rsa( &rsa, opt.filename, opt.password );
if( ret != 0 )
{
#ifdef POLARSSL_ERROR_C
polarssl_strerror( ret, buf, 1024 );
#endif
printf( " failed\n ! x509parse_key_rsa returned %d - %s\n\n", ret, buf );
rsa_free( &rsa );
goto exit;
}
printf( " ok\n" );
/*
* 1.2 Print the key
*/
printf( " . Key information ...\n" );
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 if( opt.mode == MODE_PUBLIC )
{
/*
* 1.1. Load the key
*/
printf( "\n . Loading the public key ..." );
fflush( stdout );
ret = x509parse_public_keyfile_rsa( &rsa, opt.filename );
if( ret != 0 )
{
#ifdef POLARSSL_ERROR_C
polarssl_strerror( ret, buf, 1024 );
#endif
printf( " failed\n ! x509parse_public_key_rsa returned %d - %s\n\n", ret, buf );
rsa_free( &rsa );
goto exit;
}
printf( " ok\n" );
/*
* 1.2 Print the key
*/
printf( " . Key information ...\n" );
mpi_write_file( "N: ", &rsa.N, 16, NULL );
mpi_write_file( "E: ", &rsa.E, 16, NULL );
}
else
goto usage;
exit:
rsa_free( &rsa );
#if defined(_WIN32)
printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C &&
POLARSSL_X509_PARSE_C && POLARSSL_FS_IO */