Permalink
Switch branches/tags
armv8_crypto_extensions coverity_scan datagram_packing_1919_CI_failure_debug dev/mbedtls-2.10.0-preview development-psa-proposed-2 development-psa development ecp_function_level_public_pr feature-aria-evaluation feature-opaque-keys-ECDSA feature-opaque-keys-RSA feature-opaque-keys feature-platform-setup iotssl-303-rnga-support iotssl-577-cmac iotssl-580-invalid-curves-crash-1.3 iotssl-580-invalid-curves-crash-2.1 iotssl-580-invalid-curves-crash iotssl-602-san-ip iotssl-683-travis-failing-intermittently-1.3 iotssl-683-travis-failing-intermittently-2.1 iotssl-683-travis-failing-intermittently-tmp iotssl-719-ssl3-non-compliance iotssl-784-array-entry_name-too-small-2.1 iotssl-1169-pem-missing-checks iotssl-1401-record-compression-2.1 iotssl-1401-record-compression-2.7 iotssl-1401-record-compression iotssl-1941-aria-ciphersuites iotssl-2005-slow-start-1.3 iotssl-2005-slow-start-2.1 iotssl-2167-rsa-internal-h-missing-ifdef-2.7 iotssl-2167-rsa-internal-h-missing-ifdef iotssl-2299-param-valid-cmac iotssl-2299-param-valid-md iotssl-2495-full-config-ssl-opt-fails iotssl-2578-psa-sig-verification iotssl-2596-opaque-csr-creation iotssl-2597-psa-hashing-x509 jenkinsfile lcov master mbedtls-1.3 mbedtls-1.4 mbedtls-2.0 mbedtls-2.1 mbedtls-2.3 mbedtls-2.4 mbedtls-2.5 mbedtls-2.5.2 mbedtls-2.6 mbedtls-2.7 mbedtls-2.14 partner-workshop-17Q2 polarssl-0.10 polarssl-0.11 polarssl-0.12 polarssl-0.13 polarssl-0.14 polarssl-1.0 polarssl-1.1 polarssl-1.2 pre-vfy-callback programs-fix-pk-sign-returns-2.1 programs-fix-pk-sign-returns psa-integration-utilities reduced-snprintf-for-trusted-firmware
Nothing to show
Find file Copy path
Fetching contributors…
Cannot retrieve contributors at this time
335 lines (281 sloc) 9.99 KB
/*
* Diffie-Hellman-Merkle key exchange (server side)
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* 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.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
#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_time_t time_t
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
#endif /* MBEDTLS_PLATFORM_C */
#if defined(MBEDTLS_AES_C) && defined(MBEDTLS_DHM_C) && \
defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_NET_C) && \
defined(MBEDTLS_RSA_C) && defined(MBEDTLS_SHA256_C) && \
defined(MBEDTLS_FS_IO) && defined(MBEDTLS_CTR_DRBG_C) && \
defined(MBEDTLS_SHA1_C)
#include "mbedtls/net_sockets.h"
#include "mbedtls/aes.h"
#include "mbedtls/dhm.h"
#include "mbedtls/rsa.h"
#include "mbedtls/sha1.h"
#include "mbedtls/entropy.h"
#include "mbedtls/ctr_drbg.h"
#include <stdio.h>
#include <string.h>
#endif
#define SERVER_PORT "11999"
#define PLAINTEXT "==Hello there!=="
#if !defined(MBEDTLS_AES_C) || !defined(MBEDTLS_DHM_C) || \
!defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_NET_C) || \
!defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_SHA256_C) || \
!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C) || \
!defined(MBEDTLS_SHA1_C)
int main( void )
{
mbedtls_printf("MBEDTLS_AES_C and/or MBEDTLS_DHM_C and/or MBEDTLS_ENTROPY_C "
"and/or MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
"MBEDTLS_SHA256_C and/or MBEDTLS_FS_IO and/or "
"MBEDTLS_CTR_DRBG_C not defined.\n");
return( 0 );
}
#else
int main( void )
{
FILE *f;
int ret = 1;
int exit_code = MBEDTLS_EXIT_FAILURE;
size_t n, buflen;
mbedtls_net_context listen_fd, client_fd;
unsigned char buf[2048];
unsigned char hash[32];
unsigned char buf2[2];
const char *pers = "dh_server";
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_rsa_context rsa;
mbedtls_dhm_context dhm;
mbedtls_aes_context aes;
mbedtls_mpi N, P, Q, D, E;
mbedtls_net_init( &listen_fd );
mbedtls_net_init( &client_fd );
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, MBEDTLS_MD_SHA256 );
mbedtls_dhm_init( &dhm );
mbedtls_aes_init( &aes );
mbedtls_ctr_drbg_init( &ctr_drbg );
mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E );
/*
* 1. Setup the RNG
*/
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;
}
/*
* 2a. Read the server's private RSA key
*/
mbedtls_printf( "\n . Reading private key from rsa_priv.txt" );
fflush( stdout );
if( ( f = fopen( "rsa_priv.txt", "rb" ) ) == NULL )
{
mbedtls_printf( " failed\n ! Could not open rsa_priv.txt\n" \
" ! Please run rsa_genkey first\n\n" );
goto exit;
}
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
if( ( ret = mbedtls_mpi_read_file( &N , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &E , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &D , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &P , 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &Q , 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, &P, &Q, &D, &E ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_import returned %d\n\n",
ret );
goto exit;
}
if( ( ret = mbedtls_rsa_complete( &rsa ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_complete returned %d\n\n",
ret );
goto exit;
}
/*
* 2b. Get the DHM modulus and generator
*/
mbedtls_printf( "\n . Reading DH parameters from dh_prime.txt" );
fflush( stdout );
if( ( f = fopen( "dh_prime.txt", "rb" ) ) == NULL )
{
mbedtls_printf( " failed\n ! Could not open dh_prime.txt\n" \
" ! Please run dh_genprime first\n\n" );
goto exit;
}
if( mbedtls_mpi_read_file( &dhm.P, 16, f ) != 0 ||
mbedtls_mpi_read_file( &dhm.G, 16, f ) != 0 )
{
mbedtls_printf( " failed\n ! Invalid DH parameter file\n\n" );
fclose( f );
goto exit;
}
fclose( f );
/*
* 3. Wait for a client to connect
*/
mbedtls_printf( "\n . Waiting for a remote connection" );
fflush( stdout );
if( ( ret = mbedtls_net_bind( &listen_fd, NULL, SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_bind returned %d\n\n", ret );
goto exit;
}
if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
NULL, 0, NULL ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_accept returned %d\n\n", ret );
goto exit;
}
/*
* 4. Setup the DH parameters (P,G,Ys)
*/
mbedtls_printf( "\n . Sending the server's DH parameters" );
fflush( stdout );
memset( buf, 0, sizeof( buf ) );
if( ( ret = mbedtls_dhm_make_params( &dhm, (int) mbedtls_mpi_size( &dhm.P ), buf, &n,
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_dhm_make_params returned %d\n\n", ret );
goto exit;
}
/*
* 5. Sign the parameters and send them
*/
if( ( ret = mbedtls_sha1_ret( buf, n, hash ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_sha1_ret returned %d\n\n", ret );
goto exit;
}
buf[n ] = (unsigned char)( rsa.len >> 8 );
buf[n + 1] = (unsigned char)( rsa.len );
if( ( ret = mbedtls_rsa_pkcs1_sign( &rsa, NULL, NULL, MBEDTLS_RSA_PRIVATE, MBEDTLS_MD_SHA256,
0, hash, buf + n + 2 ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_pkcs1_sign returned %d\n\n", ret );
goto exit;
}
buflen = n + 2 + rsa.len;
buf2[0] = (unsigned char)( buflen >> 8 );
buf2[1] = (unsigned char)( buflen );
if( ( ret = mbedtls_net_send( &client_fd, buf2, 2 ) ) != 2 ||
( ret = mbedtls_net_send( &client_fd, buf, buflen ) ) != (int) buflen )
{
mbedtls_printf( " failed\n ! mbedtls_net_send returned %d\n\n", ret );
goto exit;
}
/*
* 6. Get the client's public value: Yc = G ^ Xc mod P
*/
mbedtls_printf( "\n . Receiving the client's public value" );
fflush( stdout );
memset( buf, 0, sizeof( buf ) );
n = dhm.len;
if( ( ret = mbedtls_net_recv( &client_fd, buf, n ) ) != (int) n )
{
mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
goto exit;
}
if( ( ret = mbedtls_dhm_read_public( &dhm, buf, dhm.len ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_dhm_read_public returned %d\n\n", ret );
goto exit;
}
/*
* 7. Derive the shared secret: K = Ys ^ Xc mod P
*/
mbedtls_printf( "\n . Shared secret: " );
fflush( stdout );
if( ( ret = mbedtls_dhm_calc_secret( &dhm, buf, sizeof( buf ), &n,
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_dhm_calc_secret returned %d\n\n", ret );
goto exit;
}
for( n = 0; n < 16; n++ )
mbedtls_printf( "%02x", buf[n] );
/*
* 8. Setup the AES-256 encryption key
*
* This is an overly simplified example; best practice is
* to hash the shared secret with a random value to derive
* the keying material for the encryption/decryption keys
* and MACs.
*/
mbedtls_printf( "...\n . Encrypting and sending the ciphertext" );
fflush( stdout );
mbedtls_aes_setkey_enc( &aes, buf, 256 );
memcpy( buf, PLAINTEXT, 16 );
mbedtls_aes_crypt_ecb( &aes, MBEDTLS_AES_ENCRYPT, buf, buf );
if( ( ret = mbedtls_net_send( &client_fd, buf, 16 ) ) != 16 )
{
mbedtls_printf( " failed\n ! mbedtls_net_send returned %d\n\n", ret );
goto exit;
}
mbedtls_printf( "\n\n" );
exit_code = MBEDTLS_EXIT_SUCCESS;
exit:
mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E );
mbedtls_net_free( &client_fd );
mbedtls_net_free( &listen_fd );
mbedtls_aes_free( &aes );
mbedtls_rsa_free( &rsa );
mbedtls_dhm_free( &dhm );
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
return( exit_code );
}
#endif /* MBEDTLS_AES_C && MBEDTLS_DHM_C && MBEDTLS_ENTROPY_C &&
MBEDTLS_NET_C && MBEDTLS_RSA_C && MBEDTLS_SHA256_C &&
MBEDTLS_FS_IO && MBEDTLS_CTR_DRBG_C */