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Paul Bakker940f9ce2013-09-18 15:34:57 +02001/*
2 * RSA simple data encryption program
3 *
Manuel Pégourié-Gonnard6fb81872015-07-27 11:11:48 +02004 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Manuel Pégourié-Gonnard37ff1402015-09-04 14:21:07 +02005 * SPDX-License-Identifier: Apache-2.0
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
8 * not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
Paul Bakker940f9ce2013-09-18 15:34:57 +020018 *
Manuel Pégourié-Gonnardfe446432015-03-06 13:17:10 +000019 * This file is part of mbed TLS (https://tls.mbed.org)
Paul Bakker940f9ce2013-09-18 15:34:57 +020020 */
21
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020022#if !defined(MBEDTLS_CONFIG_FILE)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000023#include "mbedtls/config.h"
Manuel Pégourié-Gonnardcef4ad22014-04-29 12:39:06 +020024#else
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020025#include MBEDTLS_CONFIG_FILE
Manuel Pégourié-Gonnardcef4ad22014-04-29 12:39:06 +020026#endif
Paul Bakker940f9ce2013-09-18 15:34:57 +020027
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020028#if defined(MBEDTLS_PLATFORM_C)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000029#include "mbedtls/platform.h"
Rich Evansf90016a2015-01-19 14:26:37 +000030#else
Rich Evans18b78c72015-02-11 14:06:19 +000031#include <stdio.h>
Andres Amaya Garcia141b4f42018-04-29 22:19:26 +010032#include <stdlib.h>
33#define mbedtls_fprintf fprintf
34#define mbedtls_printf printf
Krzysztof Stachowiaka0865222019-04-24 14:24:46 +020035#define mbedtls_exit exit
Andres Amaya Garcia2b0599b2018-04-30 22:42:33 +010036#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
Andres Amaya Garcia141b4f42018-04-29 22:19:26 +010037#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
38#endif /* MBEDTLS_PLATFORM_C */
Rich Evansf90016a2015-01-19 14:26:37 +000039
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020040#if defined(MBEDTLS_BIGNUM_C) && defined(MBEDTLS_PK_PARSE_C) && \
41 defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_FS_IO) && \
42 defined(MBEDTLS_CTR_DRBG_C)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000043#include "mbedtls/error.h"
44#include "mbedtls/pk.h"
45#include "mbedtls/entropy.h"
46#include "mbedtls/ctr_drbg.h"
Paul Bakker940f9ce2013-09-18 15:34:57 +020047
Rich Evans18b78c72015-02-11 14:06:19 +000048#include <stdio.h>
49#include <string.h>
50#endif
51
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020052#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_PK_PARSE_C) || \
53 !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_FS_IO) || \
54 !defined(MBEDTLS_CTR_DRBG_C)
Rich Evans85b05ec2015-02-12 11:37:29 +000055int main( void )
Paul Bakker940f9ce2013-09-18 15:34:57 +020056{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020057 mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_PK_PARSE_C and/or "
58 "MBEDTLS_ENTROPY_C and/or MBEDTLS_FS_IO and/or "
59 "MBEDTLS_CTR_DRBG_C not defined.\n");
Krzysztof Stachowiaka0865222019-04-24 14:24:46 +020060 mbedtls_exit( 0 );
Paul Bakker940f9ce2013-09-18 15:34:57 +020061}
62#else
63int main( int argc, char *argv[] )
64{
65 FILE *f;
Andres Amaya Garcia141b4f42018-04-29 22:19:26 +010066 int ret = 1;
67 int exit_code = MBEDTLS_EXIT_FAILURE;
Paul Bakker940f9ce2013-09-18 15:34:57 +020068 size_t i, olen = 0;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020069 mbedtls_pk_context pk;
70 mbedtls_entropy_context entropy;
71 mbedtls_ctr_drbg_context ctr_drbg;
Paul Bakker940f9ce2013-09-18 15:34:57 +020072 unsigned char input[1024];
73 unsigned char buf[512];
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020074 const char *pers = "mbedtls_pk_encrypt";
Paul Bakker940f9ce2013-09-18 15:34:57 +020075
Manuel Pégourié-Gonnardec160c02015-04-28 22:52:30 +020076 mbedtls_ctr_drbg_init( &ctr_drbg );
Hanno Becker20fce252018-08-23 14:36:33 +010077 mbedtls_entropy_init( &entropy );
78 mbedtls_pk_init( &pk );
Paul Bakker940f9ce2013-09-18 15:34:57 +020079
80 if( argc != 3 )
81 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020082 mbedtls_printf( "usage: mbedtls_pk_encrypt <key_file> <string of max 100 characters>\n" );
Paul Bakker940f9ce2013-09-18 15:34:57 +020083
84#if defined(_WIN32)
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020085 mbedtls_printf( "\n" );
Paul Bakker940f9ce2013-09-18 15:34:57 +020086#endif
87
88 goto exit;
89 }
90
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020091 mbedtls_printf( "\n . Seeding the random number generator..." );
Paul Bakker940f9ce2013-09-18 15:34:57 +020092 fflush( stdout );
93
Hanno Becker6953ac22018-08-23 14:39:04 +010094 if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func,
95 &entropy, (const unsigned char *) pers,
96 strlen( pers ) ) ) != 0 )
Paul Bakker940f9ce2013-09-18 15:34:57 +020097 {
Hanno Becker6953ac22018-08-23 14:39:04 +010098 mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%04x\n",
99 -ret );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200100 goto exit;
101 }
102
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200103 mbedtls_printf( "\n . Reading public key from '%s'", argv[1] );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200104 fflush( stdout );
105
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200106 if( ( ret = mbedtls_pk_parse_public_keyfile( &pk, argv[1] ) ) != 0 )
Paul Bakker940f9ce2013-09-18 15:34:57 +0200107 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200108 mbedtls_printf( " failed\n ! mbedtls_pk_parse_public_keyfile returned -0x%04x\n", -ret );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200109 goto exit;
110 }
111
112 if( strlen( argv[2] ) > 100 )
113 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200114 mbedtls_printf( " Input data larger than 100 characters.\n\n" );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200115 goto exit;
116 }
117
118 memcpy( input, argv[2], strlen( argv[2] ) );
119
120 /*
121 * Calculate the RSA encryption of the hash.
122 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200123 mbedtls_printf( "\n . Generating the encrypted value" );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200124 fflush( stdout );
125
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200126 if( ( ret = mbedtls_pk_encrypt( &pk, input, strlen( argv[2] ),
Paul Bakker940f9ce2013-09-18 15:34:57 +0200127 buf, &olen, sizeof(buf),
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200128 mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
Paul Bakker940f9ce2013-09-18 15:34:57 +0200129 {
Hanno Becker6953ac22018-08-23 14:39:04 +0100130 mbedtls_printf( " failed\n ! mbedtls_pk_encrypt returned -0x%04x\n",
131 -ret );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200132 goto exit;
133 }
134
135 /*
136 * Write the signature into result-enc.txt
137 */
138 if( ( f = fopen( "result-enc.txt", "wb+" ) ) == NULL )
139 {
Hanno Becker6953ac22018-08-23 14:39:04 +0100140 mbedtls_printf( " failed\n ! Could not create %s\n\n",
141 "result-enc.txt" );
Hanno Becker20fce252018-08-23 14:36:33 +0100142 ret = 1;
Paul Bakker940f9ce2013-09-18 15:34:57 +0200143 goto exit;
144 }
145
146 for( i = 0; i < olen; i++ )
Hanno Becker6953ac22018-08-23 14:39:04 +0100147 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200148 mbedtls_fprintf( f, "%02X%s", buf[i],
Paul Bakker940f9ce2013-09-18 15:34:57 +0200149 ( i + 1 ) % 16 == 0 ? "\r\n" : " " );
Hanno Becker6953ac22018-08-23 14:39:04 +0100150 }
Paul Bakker940f9ce2013-09-18 15:34:57 +0200151
152 fclose( f );
153
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200154 mbedtls_printf( "\n . Done (created \"%s\")\n\n", "result-enc.txt" );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200155
Andres Amaya Garcia141b4f42018-04-29 22:19:26 +0100156 exit_code = MBEDTLS_EXIT_SUCCESS;
157
Paul Bakker940f9ce2013-09-18 15:34:57 +0200158exit:
Hanno Becker20fce252018-08-23 14:36:33 +0100159
160 mbedtls_pk_free( &pk );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200161 mbedtls_entropy_free( &entropy );
Hanno Becker20fce252018-08-23 14:36:33 +0100162 mbedtls_ctr_drbg_free( &ctr_drbg );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200163
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200164#if defined(MBEDTLS_ERROR_C)
Andres Amaya Garcia141b4f42018-04-29 22:19:26 +0100165 if( exit_code != MBEDTLS_EXIT_SUCCESS )
Manuel Pégourié-Gonnardcf9ab632015-08-27 22:03:33 +0200166 {
Hanno Becker6953ac22018-08-23 14:39:04 +0100167 mbedtls_strerror( ret, (char *) buf, sizeof( buf ) );
Manuel Pégourié-Gonnardcf9ab632015-08-27 22:03:33 +0200168 mbedtls_printf( " ! Last error was: %s\n", buf );
169 }
Manuel Pégourié-Gonnard92e5b592013-09-18 18:57:10 +0200170#endif
171
Paul Bakker940f9ce2013-09-18 15:34:57 +0200172#if defined(_WIN32)
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200173 mbedtls_printf( " + Press Enter to exit this program.\n" );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200174 fflush( stdout ); getchar();
175#endif
176
Krzysztof Stachowiaka0865222019-04-24 14:24:46 +0200177 mbedtls_exit( exit_code );
Paul Bakker940f9ce2013-09-18 15:34:57 +0200178}
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200179#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_PK_PARSE_C && MBEDTLS_ENTROPY_C &&
180 MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */