| /* |
| * RSA simple data encryption program |
| * |
| * Copyright (C) 2006-2011, ARM Limited, All Rights Reserved |
| * |
| * This file is part of mbed TLS (https://www.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 |
| |
| #include <string.h> |
| #include <stdio.h> |
| |
| #include "polarssl/error.h" |
| #include "polarssl/pk.h" |
| #include "polarssl/entropy.h" |
| #include "polarssl/ctr_drbg.h" |
| |
| #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_PK_PARSE_C) || \ |
| !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_FS_IO) || \ |
| !defined(POLARSSL_CTR_DRBG_C) |
| int main( int argc, char *argv[] ) |
| { |
| ((void) argc); |
| ((void) argv); |
| |
| printf("POLARSSL_BIGNUM_C and/or POLARSSL_PK_PARSE_C and/or " |
| "POLARSSL_ENTROPY_C and/or POLARSSL_FS_IO and/or " |
| "POLARSSL_CTR_DRBG_C not defined.\n"); |
| return( 0 ); |
| } |
| #else |
| int main( int argc, char *argv[] ) |
| { |
| FILE *f; |
| int ret; |
| size_t i, olen = 0; |
| pk_context pk; |
| entropy_context entropy; |
| ctr_drbg_context ctr_drbg; |
| unsigned char input[1024]; |
| unsigned char buf[512]; |
| const char *pers = "pk_encrypt"; |
| |
| ret = 1; |
| |
| if( argc != 3 ) |
| { |
| printf( "usage: pk_encrypt <key_file> <string of max 100 characters>\n" ); |
| |
| #if defined(_WIN32) |
| printf( "\n" ); |
| #endif |
| |
| goto exit; |
| } |
| |
| printf( "\n . Seeding the random number generator..." ); |
| fflush( stdout ); |
| |
| entropy_init( &entropy ); |
| if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy, |
| (const unsigned char *) pers, |
| strlen( pers ) ) ) != 0 ) |
| { |
| printf( " failed\n ! ctr_drbg_init returned -0x%04x\n", -ret ); |
| goto exit; |
| } |
| |
| printf( "\n . Reading public key from '%s'", argv[1] ); |
| fflush( stdout ); |
| |
| pk_init( &pk ); |
| |
| if( ( ret = pk_parse_public_keyfile( &pk, argv[1] ) ) != 0 ) |
| { |
| printf( " failed\n ! pk_parse_public_keyfile returned -0x%04x\n", -ret ); |
| goto exit; |
| } |
| |
| if( strlen( argv[2] ) > 100 ) |
| { |
| printf( " Input data larger than 100 characters.\n\n" ); |
| goto exit; |
| } |
| |
| memcpy( input, argv[2], strlen( argv[2] ) ); |
| |
| /* |
| * Calculate the RSA encryption of the hash. |
| */ |
| printf( "\n . Generating the encrypted value" ); |
| fflush( stdout ); |
| |
| if( ( ret = pk_encrypt( &pk, input, strlen( argv[2] ), |
| buf, &olen, sizeof(buf), |
| ctr_drbg_random, &ctr_drbg ) ) != 0 ) |
| { |
| printf( " failed\n ! pk_encrypt returned -0x%04x\n", -ret ); |
| goto exit; |
| } |
| |
| /* |
| * Write the signature into result-enc.txt |
| */ |
| if( ( f = fopen( "result-enc.txt", "wb+" ) ) == NULL ) |
| { |
| ret = 1; |
| printf( " failed\n ! Could not create %s\n\n", "result-enc.txt" ); |
| goto exit; |
| } |
| |
| for( i = 0; i < olen; i++ ) |
| fprintf( f, "%02X%s", buf[i], |
| ( i + 1 ) % 16 == 0 ? "\r\n" : " " ); |
| |
| fclose( f ); |
| |
| printf( "\n . Done (created \"%s\")\n\n", "result-enc.txt" ); |
| |
| exit: |
| ctr_drbg_free( &ctr_drbg ); |
| entropy_free( &entropy ); |
| |
| #if defined(POLARSSL_ERROR_C) |
| polarssl_strerror( ret, (char *) buf, sizeof(buf) ); |
| printf( " ! Last error was: %s\n", buf ); |
| #endif |
| |
| #if defined(_WIN32) |
| printf( " + Press Enter to exit this program.\n" ); |
| fflush( stdout ); getchar(); |
| #endif |
| |
| return( ret ); |
| } |
| #endif /* POLARSSL_BIGNUM_C && POLARSSL_PK_PARSE_C && POLARSSL_ENTROPY_C && |
| POLARSSL_FS_IO && POLARSSL_CTR_DRBG_C */ |