diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/programs/pkey/rsa_genkey.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/programs/pkey/rsa_genkey.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/pkey/rsa_genkey.c b/lib/mbedtls-2.27.0/programs/pkey/rsa_genkey.c new file mode 100644 index 0000000..26a8925 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/pkey/rsa_genkey.c @@ -0,0 +1,176 @@ +/* + * Example RSA key generation program + * + * 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_BIGNUM_C) && defined(MBEDTLS_ENTROPY_C) && \ + defined(MBEDTLS_RSA_C) && defined(MBEDTLS_GENPRIME) && \ + defined(MBEDTLS_FS_IO) && defined(MBEDTLS_CTR_DRBG_C) +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" +#include "mbedtls/bignum.h" +#include "mbedtls/rsa.h" + +#include <stdio.h> +#include <string.h> +#endif + +#define KEY_SIZE 2048 +#define EXPONENT 65537 + +#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) || \ + !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_GENPRIME) || \ + !defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C) +int main( void ) +{ + mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or " + "MBEDTLS_RSA_C and/or MBEDTLS_GENPRIME and/or " + "MBEDTLS_FS_IO and/or MBEDTLS_CTR_DRBG_C not defined.\n"); + mbedtls_exit( 0 ); +} +#else + + +int main( void ) +{ + int ret = 1; + int exit_code = MBEDTLS_EXIT_FAILURE; + mbedtls_rsa_context rsa; + mbedtls_entropy_context entropy; + mbedtls_ctr_drbg_context ctr_drbg; + mbedtls_mpi N, P, Q, D, E, DP, DQ, QP; + FILE *fpub = NULL; + FILE *fpriv = NULL; + const char *pers = "rsa_genkey"; + + mbedtls_ctr_drbg_init( &ctr_drbg ); + mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 ); + 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 ); + + mbedtls_printf( "\n . Seeding the random number generator..." ); + fflush( stdout ); + + mbedtls_entropy_init( &entropy ); + 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 %d\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n . Generating the RSA key [ %d-bit ]...", KEY_SIZE ); + fflush( stdout ); + + if( ( ret = mbedtls_rsa_gen_key( &rsa, mbedtls_ctr_drbg_random, &ctr_drbg, KEY_SIZE, + EXPONENT ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_rsa_gen_key returned %d\n\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n . Exporting the public key in rsa_pub.txt...." ); + fflush( stdout ); + + 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; + } + + if( ( fpub = fopen( "rsa_pub.txt", "wb+" ) ) == NULL ) + { + mbedtls_printf( " failed\n ! could not open rsa_pub.txt for writing\n\n" ); + goto exit; + } + + if( ( ret = mbedtls_mpi_write_file( "N = ", &N, 16, fpub ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "E = ", &E, 16, fpub ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_mpi_write_file returned %d\n\n", ret ); + goto exit; + } + + mbedtls_printf( " ok\n . Exporting the private key in rsa_priv.txt..." ); + fflush( stdout ); + + if( ( fpriv = fopen( "rsa_priv.txt", "wb+" ) ) == NULL ) + { + mbedtls_printf( " failed\n ! could not open rsa_priv.txt for writing\n" ); + goto exit; + } + + if( ( ret = mbedtls_mpi_write_file( "N = " , &N , 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "E = " , &E , 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "D = " , &D , 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "P = " , &P , 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "Q = " , &Q , 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "DP = ", &DP, 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "DQ = ", &DQ, 16, fpriv ) ) != 0 || + ( ret = mbedtls_mpi_write_file( "QP = ", &QP, 16, fpriv ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_mpi_write_file returned %d\n\n", ret ); + goto exit; + } + mbedtls_printf( " ok\n\n" ); + + exit_code = MBEDTLS_EXIT_SUCCESS; + +exit: + + if( fpub != NULL ) + fclose( fpub ); + + if( fpriv != NULL ) + fclose( fpriv ); + + 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_rsa_free( &rsa ); + 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_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_RSA_C && + MBEDTLS_GENPRIME && MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */ |