mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-23 02:05:45 +01:00
3b0c430638
This is done to account for platforms, for which we want custom behavior upon the program termination, hence we call `mbedtls_exit()` instead of returning from `main()`. For the sake of consistency, introduces the modifications have been made to the test and utility examples as well. These, while less likely to be used in the low level environments, won't suffer from such a change.
193 lines
6.4 KiB
C
193 lines
6.4 KiB
C
/*
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* Example RSA key generation program
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#define mbedtls_printf printf
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#define mbedtls_exit exit
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif /* MBEDTLS_PLATFORM_C */
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#if defined(MBEDTLS_BIGNUM_C) && defined(MBEDTLS_ENTROPY_C) && \
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defined(MBEDTLS_RSA_C) && defined(MBEDTLS_GENPRIME) && \
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defined(MBEDTLS_FS_IO) && defined(MBEDTLS_CTR_DRBG_C)
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#include "mbedtls/entropy.h"
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#include "mbedtls/ctr_drbg.h"
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#include "mbedtls/bignum.h"
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#include "mbedtls/x509.h"
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#include "mbedtls/rsa.h"
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#include <stdio.h>
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#include <string.h>
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#endif
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#define KEY_SIZE 2048
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#define EXPONENT 65537
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#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) || \
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!defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_GENPRIME) || \
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!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C)
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int main( void )
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{
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mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
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"MBEDTLS_RSA_C and/or MBEDTLS_GENPRIME and/or "
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"MBEDTLS_FS_IO and/or MBEDTLS_CTR_DRBG_C not defined.\n");
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mbedtls_exit( 0 );
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}
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#else
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int main( void )
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{
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int ret = 1;
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int exit_code = MBEDTLS_EXIT_FAILURE;
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mbedtls_rsa_context rsa;
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context ctr_drbg;
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mbedtls_mpi N, P, Q, D, E, DP, DQ, QP;
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FILE *fpub = NULL;
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FILE *fpriv = NULL;
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const char *pers = "rsa_genkey";
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mbedtls_ctr_drbg_init( &ctr_drbg );
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mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
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mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
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mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
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mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );
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mbedtls_printf( "\n . Seeding the random number generator..." );
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fflush( stdout );
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mbedtls_entropy_init( &entropy );
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if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
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(const unsigned char *) pers,
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strlen( pers ) ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n . Generating the RSA key [ %d-bit ]...", KEY_SIZE );
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fflush( stdout );
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if( ( ret = mbedtls_rsa_gen_key( &rsa, mbedtls_ctr_drbg_random, &ctr_drbg, KEY_SIZE,
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EXPONENT ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_rsa_gen_key returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n . Exporting the public key in rsa_pub.txt...." );
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fflush( stdout );
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if( ( ret = mbedtls_rsa_export ( &rsa, &N, &P, &Q, &D, &E ) ) != 0 ||
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( ret = mbedtls_rsa_export_crt( &rsa, &DP, &DQ, &QP ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" );
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goto exit;
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}
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if( ( fpub = fopen( "rsa_pub.txt", "wb+" ) ) == NULL )
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{
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mbedtls_printf( " failed\n ! could not open rsa_pub.txt for writing\n\n" );
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goto exit;
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}
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if( ( ret = mbedtls_mpi_write_file( "N = ", &N, 16, fpub ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "E = ", &E, 16, fpub ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_write_file returned %d\n\n", ret );
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goto exit;
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}
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mbedtls_printf( " ok\n . Exporting the private key in rsa_priv.txt..." );
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fflush( stdout );
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if( ( fpriv = fopen( "rsa_priv.txt", "wb+" ) ) == NULL )
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{
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mbedtls_printf( " failed\n ! could not open rsa_priv.txt for writing\n" );
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goto exit;
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}
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if( ( ret = mbedtls_mpi_write_file( "N = " , &N , 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "E = " , &E , 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "D = " , &D , 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "P = " , &P , 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "Q = " , &Q , 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "DP = ", &DP, 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "DQ = ", &DQ, 16, fpriv ) ) != 0 ||
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( ret = mbedtls_mpi_write_file( "QP = ", &QP, 16, fpriv ) ) != 0 )
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{
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mbedtls_printf( " failed\n ! mbedtls_mpi_write_file returned %d\n\n", ret );
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goto exit;
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}
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/*
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mbedtls_printf( " ok\n . Generating the certificate..." );
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x509write_init_raw( &cert );
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x509write_add_pubkey( &cert, &rsa );
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x509write_add_subject( &cert, "CN='localhost'" );
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x509write_add_validity( &cert, "2007-09-06 17:00:32",
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"2010-09-06 17:00:32" );
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x509write_create_selfsign( &cert, &rsa );
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x509write_crtfile( &cert, "cert.der", X509_OUTPUT_DER );
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x509write_crtfile( &cert, "cert.pem", X509_OUTPUT_PEM );
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x509write_free_raw( &cert );
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*/
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mbedtls_printf( " ok\n\n" );
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exit_code = MBEDTLS_EXIT_SUCCESS;
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exit:
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if( fpub != NULL )
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fclose( fpub );
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if( fpriv != NULL )
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fclose( fpriv );
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mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
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mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
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mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
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mbedtls_rsa_free( &rsa );
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mbedtls_ctr_drbg_free( &ctr_drbg );
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mbedtls_entropy_free( &entropy );
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#if defined(_WIN32)
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mbedtls_printf( " Press Enter to exit this program.\n" );
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fflush( stdout ); getchar();
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#endif
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mbedtls_exit( exit_code );
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}
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#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_RSA_C &&
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MBEDTLS_GENPRIME && MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */
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