| /* |
| * Key writing application |
| * |
| * Copyright The Mbed TLS Contributors |
| * 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. |
| */ |
| |
| #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_printf printf |
| #define mbedtls_exit exit |
| #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS |
| #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE |
| #endif /* MBEDTLS_PLATFORM_C */ |
| |
| #if defined(MBEDTLS_PK_PARSE_C) && 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/error.h" |
| |
| #include "mbedtls/entropy.h" |
| #include "mbedtls/ctr_drbg.h" |
| |
| #include <stdio.h> |
| #include <string.h> |
| #endif |
| |
| #if defined(MBEDTLS_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(MBEDTLS_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_writer 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(MBEDTLS_PK_PARSE_C) || \ |
| !defined(MBEDTLS_PK_WRITE_C) || \ |
| !defined(MBEDTLS_FS_IO) || \ |
| !defined(MBEDTLS_ENTROPY_C) || \ |
| !defined(MBEDTLS_CTR_DRBG_C) |
| int main( void ) |
| { |
| mbedtls_printf( "MBEDTLS_PK_PARSE_C and/or MBEDTLS_PK_WRITE_C and/or " |
| "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or " |
| "MBEDTLS_FS_IO not defined.\n" ); |
| mbedtls_exit( 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( 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 defined(MBEDTLS_PEM_WRITE_C) |
| if( opt.output_format == OUTPUT_FORMAT_PEM ) |
| { |
| if( ( ret = mbedtls_pk_write_pubkey_pem( key, output_buf, 16000 ) ) != 0 ) |
| return( ret ); |
| |
| len = strlen( (char *) output_buf ); |
| } |
| else |
| #endif |
| { |
| if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf, 16000 ) ) < 0 ) |
| return( ret ); |
| |
| len = ret; |
| c = output_buf + sizeof(output_buf) - len; |
| } |
| |
| 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( 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 defined(MBEDTLS_PEM_WRITE_C) |
| if( opt.output_format == OUTPUT_FORMAT_PEM ) |
| { |
| if( ( ret = mbedtls_pk_write_key_pem( key, output_buf, 16000 ) ) != 0 ) |
| return( ret ); |
| |
| len = strlen( (char *) output_buf ); |
| } |
| else |
| #endif |
| { |
| 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, "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 = 1; |
| int exit_code = MBEDTLS_EXIT_FAILURE; |
| char buf[1024]; |
| int i; |
| char *p, *q; |
| |
| const char *pers = "pkey/key_app"; |
| mbedtls_entropy_context entropy; |
| mbedtls_ctr_drbg_context ctr_drbg; |
| |
| mbedtls_pk_context key; |
| mbedtls_mpi N, P, Q, D, E, DP, DQ, QP; |
| |
| /* |
| * Set to sane values |
| */ |
| mbedtls_entropy_init( &entropy ); |
| mbedtls_ctr_drbg_init( &ctr_drbg ); |
| |
| mbedtls_pk_init( &key ); |
| memset( buf, 0, sizeof( buf ) ); |
| |
| mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q ); |
| mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP ); |
| mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP ); |
| |
| if( argc == 0 ) |
| { |
| usage: |
| mbedtls_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(MBEDTLS_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 ) |
| { |
| mbedtls_printf( "\nCannot output a key without reading one.\n"); |
| goto exit; |
| } |
| |
| if( opt.mode == MODE_PUBLIC && opt.output_mode == OUTPUT_MODE_PRIVATE ) |
| { |
| mbedtls_printf( "\nCannot output a private key from a public key.\n"); |
| goto exit; |
| } |
| |
| if( opt.mode == MODE_PRIVATE ) |
| { |
| /* |
| * 1.1. Load the key |
| */ |
| mbedtls_printf( "\n . Loading the private key ..." ); |
| 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", (unsigned int) -ret ); |
| goto exit; |
| } |
| |
| ret = mbedtls_pk_parse_keyfile( &key, opt.filename, NULL, |
| mbedtls_ctr_drbg_random, &ctr_drbg ); |
| if( ret != 0 ) |
| { |
| mbedtls_strerror( ret, (char *) buf, sizeof(buf) ); |
| mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| /* |
| * 1.2 Print the key |
| */ |
| mbedtls_printf( " . 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 ); |
| |
| if( ( ret = mbedtls_rsa_export ( rsa, &N, &P, &Q, &D, &E ) ) != 0 || |
| ( ret = mbedtls_rsa_export_crt( rsa, &DP, &DQ, &QP ) ) != 0 ) |
| { |
| mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" ); |
| goto exit; |
| } |
| |
| mbedtls_mpi_write_file( "N: ", &N, 16, NULL ); |
| mbedtls_mpi_write_file( "E: ", &E, 16, NULL ); |
| mbedtls_mpi_write_file( "D: ", &D, 16, NULL ); |
| mbedtls_mpi_write_file( "P: ", &P, 16, NULL ); |
| mbedtls_mpi_write_file( "Q: ", &Q, 16, NULL ); |
| mbedtls_mpi_write_file( "DP: ", &DP, 16, NULL ); |
| mbedtls_mpi_write_file( "DQ: ", &DQ, 16, NULL ); |
| mbedtls_mpi_write_file( "QP: ", &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_mpi_write_file( "Q(X): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(X), 16, NULL ); |
| mbedtls_mpi_write_file( "Q(Y): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Y), 16, NULL ); |
| mbedtls_mpi_write_file( "Q(Z): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Z), 16, NULL ); |
| mbedtls_mpi_write_file( "D : ", &ecp->MBEDTLS_PRIVATE(d) , 16, NULL ); |
| } |
| else |
| #endif |
| mbedtls_printf("key type not supported yet\n"); |
| |
| } |
| else if( opt.mode == MODE_PUBLIC ) |
| { |
| /* |
| * 1.1. Load the key |
| */ |
| mbedtls_printf( "\n . Loading the public key ..." ); |
| fflush( stdout ); |
| |
| ret = mbedtls_pk_parse_public_keyfile( &key, opt.filename ); |
| |
| if( ret != 0 ) |
| { |
| mbedtls_strerror( ret, (char *) buf, sizeof(buf) ); |
| mbedtls_printf( " failed\n ! mbedtls_pk_parse_public_key returned -0x%04x - %s\n\n", (unsigned int) -ret, buf ); |
| goto exit; |
| } |
| |
| mbedtls_printf( " ok\n" ); |
| |
| /* |
| * 1.2 Print the key |
| */ |
| mbedtls_printf( " . 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 ); |
| |
| if( ( ret = mbedtls_rsa_export( rsa, &N, NULL, NULL, |
| NULL, &E ) ) != 0 ) |
| { |
| mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" ); |
| goto exit; |
| } |
| mbedtls_mpi_write_file( "N: ", &N, 16, NULL ); |
| mbedtls_mpi_write_file( "E: ", &E, 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_mpi_write_file( "Q(X): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(X), 16, NULL ); |
| mbedtls_mpi_write_file( "Q(Y): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Y), 16, NULL ); |
| mbedtls_mpi_write_file( "Q(Z): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Z), 16, NULL ); |
| } |
| else |
| #endif |
| mbedtls_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_code = MBEDTLS_EXIT_SUCCESS; |
| |
| exit: |
| |
| if( exit_code != MBEDTLS_EXIT_SUCCESS ) |
| { |
| #ifdef MBEDTLS_ERROR_C |
| mbedtls_strerror( ret, buf, sizeof( buf ) ); |
| mbedtls_printf( " - %s\n", buf ); |
| #else |
| mbedtls_printf("\n"); |
| #endif |
| } |
| |
| mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q ); |
| mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP ); |
| mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP ); |
| |
| 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 |
| |
| mbedtls_exit( exit_code ); |
| } |
| #endif /* MBEDTLS_PK_PARSE_C && MBEDTLS_PK_WRITE_C && MBEDTLS_FS_IO && |
| MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */ |