| /* |
| * Key writing application |
| * |
| * Copyright (C) 2006-2013, ARM Limited, All Rights Reserved |
| * |
| * This file is part of mbed TLS (https://polarssl.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_PK_WRITE_C) && defined(POLARSSL_FS_IO) |
| #include "polarssl/error.h" |
| #include "polarssl/pk.h" |
| #include "polarssl/error.h" |
| |
| #include <stdio.h> |
| #include <string.h> |
| #endif |
| |
| #if defined(POLARSSL_PEM_WRITE_C) |
| #define USAGE_OUT \ |
| " output_file=%%s default: keyfile.pem\n" \ |
| " output_format=pem|der default: pem\n" |
| #else |
| #define USAGE_OUT \ |
| " output_file=%%s default: keyfile.der\n" \ |
| " output_format=der default: der\n" |
| #endif |
| |
| #if defined(POLARSSL_PEM_WRITE_C) |
| #define DFL_OUTPUT_FILENAME "keyfile.pem" |
| #define DFL_OUTPUT_FORMAT OUTPUT_FORMAT_PEM |
| #else |
| #define DFL_OUTPUT_FILENAME "keyfile.der" |
| #define DFL_OUTPUT_FORMAT OUTPUT_FORMAT_DER |
| #endif |
| |
| #define DFL_MODE MODE_NONE |
| #define DFL_FILENAME "keyfile.key" |
| #define DFL_DEBUG_LEVEL 0 |
| #define DFL_OUTPUT_MODE OUTPUT_MODE_NONE |
| |
| #define MODE_NONE 0 |
| #define MODE_PRIVATE 1 |
| #define MODE_PUBLIC 2 |
| |
| #define OUTPUT_MODE_NONE 0 |
| #define OUTPUT_MODE_PRIVATE 1 |
| #define OUTPUT_MODE_PUBLIC 2 |
| |
| #define OUTPUT_FORMAT_PEM 0 |
| #define OUTPUT_FORMAT_DER 1 |
| |
| #define USAGE \ |
| "\n usage: key_app param=<>...\n" \ |
| "\n acceptable parameters:\n" \ |
| " mode=private|public default: none\n" \ |
| " filename=%%s default: keyfile.key\n" \ |
| " output_mode=private|public default: none\n" \ |
| USAGE_OUT \ |
| "\n" |
| |
| #if !defined(POLARSSL_PK_WRITE_C) || !defined(POLARSSL_FS_IO) |
| int main( void ) |
| { |
| polarssl_printf( "POLARSSL_PK_WRITE_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 */ |
| int output_mode; /* the output mode to use */ |
| const char *output_file; /* where to store the constructed key file */ |
| int output_format; /* the output format to use */ |
| } opt; |
| |
| static int write_public_key( 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 defined(POLARSSL_PEM_WRITE_C) |
| if( opt.output_format == OUTPUT_FORMAT_PEM ) |
| { |
| if( ( ret = pk_write_pubkey_pem( key, output_buf, 16000 ) ) != 0 ) |
| return( ret ); |
| |
| len = strlen( (char *) output_buf ); |
| } |
| else |
| #endif |
| { |
| if( ( ret = pk_write_pubkey_der( key, output_buf, 16000 ) ) < 0 ) |
| return( ret ); |
| |
| len = ret; |
| c = output_buf + sizeof(output_buf) - len - 1; |
| } |
| |
| if( ( f = fopen( output_file, "w" ) ) == NULL ) |
| return( -1 ); |
| |
| if( fwrite( c, 1, len, f ) != len ) |
| { |
| fclose( f ); |
| return( -1 ); |
| } |
| |
| fclose( f ); |
| |
| return( 0 ); |
| } |
| |
| static int write_private_key( 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 defined(POLARSSL_PEM_WRITE_C) |
| if( opt.output_format == OUTPUT_FORMAT_PEM ) |
| { |
| if( ( ret = pk_write_key_pem( key, output_buf, 16000 ) ) != 0 ) |
| return( ret ); |
| |
| len = strlen( (char *) output_buf ); |
| } |
| else |
| #endif |
| { |
| if( ( ret = pk_write_key_der( key, output_buf, 16000 ) ) < 0 ) |
| return( ret ); |
| |
| len = ret; |
| c = output_buf + sizeof(output_buf) - len - 1; |
| } |
| |
| if( ( f = fopen( output_file, "w" ) ) == 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; |
| pk_context key; |
| char buf[1024]; |
| int i; |
| char *p, *q; |
| |
| /* |
| * Set to sane values |
| */ |
| pk_init( &key ); |
| memset( buf, 0, sizeof( buf ) ); |
| |
| if( argc == 0 ) |
| { |
| usage: |
| ret = 1; |
| polarssl_printf( USAGE ); |
| goto exit; |
| } |
| |
| opt.mode = DFL_MODE; |
| opt.filename = DFL_FILENAME; |
| opt.output_mode = DFL_OUTPUT_MODE; |
| opt.output_file = DFL_OUTPUT_FILENAME; |
| opt.output_format = DFL_OUTPUT_FORMAT; |
| |
| 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, "output_mode" ) == 0 ) |
| { |
| if( strcmp( q, "private" ) == 0 ) |
| opt.output_mode = OUTPUT_MODE_PRIVATE; |
| else if( strcmp( q, "public" ) == 0 ) |
| opt.output_mode = OUTPUT_MODE_PUBLIC; |
| else |
| goto usage; |
| } |
| else if( strcmp( p, "output_format" ) == 0 ) |
| { |
| #if defined(POLARSSL_PEM_WRITE_C) |
| if( strcmp( q, "pem" ) == 0 ) |
| opt.output_format = OUTPUT_FORMAT_PEM; |
| else |
| #endif |
| if( strcmp( q, "der" ) == 0 ) |
| opt.output_format = OUTPUT_FORMAT_DER; |
| else |
| goto usage; |
| } |
| else if( strcmp( p, "filename" ) == 0 ) |
| opt.filename = q; |
| else if( strcmp( p, "output_file" ) == 0 ) |
| opt.output_file = q; |
| else |
| goto usage; |
| } |
| |
| if( opt.mode == MODE_NONE && opt.output_mode != OUTPUT_MODE_NONE ) |
| { |
| polarssl_printf( "\nCannot output a key without reading one.\n"); |
| goto exit; |
| } |
| |
| if( opt.mode == MODE_PUBLIC && opt.output_mode == OUTPUT_MODE_PRIVATE ) |
| { |
| polarssl_printf( "\nCannot output a private key from a public key.\n"); |
| goto exit; |
| } |
| |
| if( opt.mode == MODE_PRIVATE ) |
| { |
| /* |
| * 1.1. Load the key |
| */ |
| polarssl_printf( "\n . Loading the private key ..." ); |
| fflush( stdout ); |
| |
| ret = pk_parse_keyfile( &key, opt.filename, NULL ); |
| |
| if( ret != 0 ) |
| { |
| polarssl_strerror( ret, (char *) buf, sizeof(buf) ); |
| polarssl_printf( " failed\n ! pk_parse_keyfile returned -0x%04x - %s\n\n", -ret, buf ); |
| 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( &key ) == POLARSSL_PK_RSA ) |
| { |
| rsa_context *rsa = pk_rsa( key ); |
| 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( &key ) == POLARSSL_PK_ECKEY ) |
| { |
| ecp_keypair *ecp = pk_ec( key ); |
| 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("key type not supported yet\n"); |
| |
| } |
| 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( &key, opt.filename ); |
| |
| if( ret != 0 ) |
| { |
| polarssl_strerror( ret, (char *) buf, sizeof(buf) ); |
| polarssl_printf( " failed\n ! pk_parse_public_key returned -0x%04x - %s\n\n", -ret, buf ); |
| 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( &key ) == POLARSSL_PK_RSA ) |
| { |
| rsa_context *rsa = pk_rsa( key ); |
| 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( &key ) == POLARSSL_PK_ECKEY ) |
| { |
| ecp_keypair *ecp = pk_ec( key ); |
| 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("key type not supported yet\n"); |
| } |
| else |
| goto usage; |
| |
| if( opt.output_mode == OUTPUT_MODE_PUBLIC ) |
| { |
| write_public_key( &key, opt.output_file ); |
| } |
| if( opt.output_mode == OUTPUT_MODE_PRIVATE ) |
| { |
| write_private_key( &key, opt.output_file ); |
| } |
| |
| exit: |
| |
| if( ret != 0 && ret != 1) |
| { |
| #ifdef POLARSSL_ERROR_C |
| polarssl_strerror( ret, buf, sizeof( buf ) ); |
| polarssl_printf( " - %s\n", buf ); |
| #else |
| polarssl_printf("\n"); |
| #endif |
| } |
| |
| pk_free( &key ); |
| |
| #if defined(_WIN32) |
| polarssl_printf( " + Press Enter to exit this program.\n" ); |
| fflush( stdout ); getchar(); |
| #endif |
| |
| return( ret ); |
| } |
| #endif /* POLARSSL_X509_WRITE_C && POLARSSL_FS_IO */ |