diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/programs/pkey/rsa_encrypt.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/programs/pkey/rsa_encrypt.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/pkey/rsa_encrypt.c b/lib/mbedtls-2.27.0/programs/pkey/rsa_encrypt.c new file mode 100644 index 0000000..ba01201 --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/pkey/rsa_encrypt.c @@ -0,0 +1,188 @@ +/* + * RSA simple data encryption 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_fprintf fprintf +#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_RSA_C) && \ + defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_FS_IO) && \ + defined(MBEDTLS_CTR_DRBG_C) +#include "mbedtls/rsa.h" +#include "mbedtls/entropy.h" +#include "mbedtls/ctr_drbg.h" + +#include <string.h> +#endif + +#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_RSA_C) || \ + !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_FS_IO) || \ + !defined(MBEDTLS_CTR_DRBG_C) +int main( void ) +{ + mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_RSA_C and/or " + "MBEDTLS_ENTROPY_C and/or MBEDTLS_FS_IO and/or " + "MBEDTLS_CTR_DRBG_C not defined.\n"); + mbedtls_exit( 0 ); +} +#else + + +int main( int argc, char *argv[] ) +{ + FILE *f; + int ret = 1; + int exit_code = MBEDTLS_EXIT_FAILURE; + size_t i; + mbedtls_rsa_context rsa; + mbedtls_entropy_context entropy; + mbedtls_ctr_drbg_context ctr_drbg; + unsigned char input[1024]; + unsigned char buf[512]; + const char *pers = "rsa_encrypt"; + mbedtls_mpi N, E; + + if( argc != 2 ) + { + mbedtls_printf( "usage: rsa_encrypt <string of max 100 characters>\n" ); + +#if defined(_WIN32) + mbedtls_printf( "\n" ); +#endif + + mbedtls_exit( exit_code ); + } + + mbedtls_printf( "\n . Seeding the random number generator..." ); + fflush( stdout ); + + mbedtls_mpi_init( &N ); mbedtls_mpi_init( &E ); + mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 ); + mbedtls_ctr_drbg_init( &ctr_drbg ); + mbedtls_entropy_init( &entropy ); + + ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, + &entropy, (const unsigned char *) pers, + strlen( pers ) ); + if( ret != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", + ret ); + goto exit; + } + + mbedtls_printf( "\n . Reading public key from rsa_pub.txt" ); + fflush( stdout ); + + if( ( f = fopen( "rsa_pub.txt", "rb" ) ) == NULL ) + { + mbedtls_printf( " failed\n ! Could not open rsa_pub.txt\n" \ + " ! Please run rsa_genkey first\n\n" ); + goto exit; + } + + if( ( ret = mbedtls_mpi_read_file( &N, 16, f ) ) != 0 || + ( ret = mbedtls_mpi_read_file( &E, 16, f ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_mpi_read_file returned %d\n\n", + ret ); + fclose( f ); + goto exit; + } + fclose( f ); + + if( ( ret = mbedtls_rsa_import( &rsa, &N, NULL, NULL, NULL, &E ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_rsa_import returned %d\n\n", + ret ); + goto exit; + } + + if( strlen( argv[1] ) > 100 ) + { + mbedtls_printf( " Input data larger than 100 characters.\n\n" ); + goto exit; + } + + memcpy( input, argv[1], strlen( argv[1] ) ); + + /* + * Calculate the RSA encryption of the hash. + */ + mbedtls_printf( "\n . Generating the RSA encrypted value" ); + fflush( stdout ); + + ret = mbedtls_rsa_pkcs1_encrypt( &rsa, mbedtls_ctr_drbg_random, + &ctr_drbg, MBEDTLS_RSA_PUBLIC, + strlen( argv[1] ), input, buf ); + if( ret != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_rsa_pkcs1_encrypt returned %d\n\n", + ret ); + goto exit; + } + + /* + * Write the signature into result-enc.txt + */ + if( ( f = fopen( "result-enc.txt", "wb+" ) ) == NULL ) + { + mbedtls_printf( " failed\n ! Could not create %s\n\n", "result-enc.txt" ); + goto exit; + } + + for( i = 0; i < rsa.len; i++ ) + mbedtls_fprintf( f, "%02X%s", buf[i], + ( i + 1 ) % 16 == 0 ? "\r\n" : " " ); + + fclose( f ); + + mbedtls_printf( "\n . Done (created \"%s\")\n\n", "result-enc.txt" ); + + exit_code = MBEDTLS_EXIT_SUCCESS; + +exit: + mbedtls_mpi_free( &N ); mbedtls_mpi_free( &E ); + mbedtls_ctr_drbg_free( &ctr_drbg ); + mbedtls_entropy_free( &entropy ); + mbedtls_rsa_free( &rsa ); + +#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_RSA_C && MBEDTLS_ENTROPY_C && + MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */ |