mbedtls/programs/pkey/dh_client.c

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/*
* Diffie-Hellman-Merkle key exchange (client side)
*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* 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
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*
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* http://www.apache.org/licenses/LICENSE-2.0
*
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* 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.
*
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* This file is part of mbed TLS (https://tls.mbed.org)
*/
#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
#else
#include <stdio.h>
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#include <stdlib.h>
#define mbedtls_printf printf
#define mbedtls_time_t time_t
#define mbedtls_exit exit
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#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"
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#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_NAME "localhost"
#define SERVER_PORT "11999"
#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");
Merge mbedtls 2.16.6 into baremetal Conflicts: mbedtls.doxyfile - PROJECT_NAME - mbed TLS v2.16.6 chosen. doc_mainpage.h - mbed TLS v2.16.6 version chosen. hmac_drbg.h - line 260, extended description chosen. - line 313, extended description chosen. - line 338, extended description chosen. version.h - 2.16.6 chosen. CMakeLists.txt - 2.16.6 chosen. test_suite_version.data - 2.16.6 chosen. Makefile - 141 - manual correction - baremetal version of C_SOURCE_FILES with variables for directories plus 2.16.6 CTAGS addition. pkparse.c - lines 846 onwards - the asn1_get_nonzero_mpi implementation chosen. ssl_tls.c - line 5269 - edited manually, left the ret=0, because baremetal has a different behaviour since commit 87b5626, but added a debug message that's new in 2.16.6. all.sh: - component_build_deprecated - chosen the refactored version from 2.16.6, but with extra flags from baremetal. - rest of the _no_xxx tests - merged make options to have PTHREAD=1 and other changes from 2.16.6 (like -O1 instead of -O0). - component_build_arm_none_eabi_gcc_no_64bit_multiplication - added TINYCRYPT_BUILD=0 to the 2.16.6 version of make. x509/req_app.c - left baremetal log but with mbedtls_exit( 0 ) call. x509/crl_app.c - left baremetal log but with mbedtls_exit( 0 ) call. x509/cert_app.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl/ssl_mail_client.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl/ssl_pthread_server.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl/ssl_fork_server.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl_client1.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call. ssl_client2.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call. - line 132 - new options of both branches added. - skip close notify handled as in 2.16.6, but with `ssl` instead of `&ssl`. - Merged the 2.16.6 usage split with additional baremetal usages. - Merged options from baremetal and 2.16.6. ssl_server.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl_server2.c - Merged the 2.16.6 usage split with additional baremetal usages. config.pl - fixed missing defines from the documentation, removed duplicates, and reorganised so that the documentation and excluded list are ordered in the same way. test_suite_x509parse.data - only added the two new pathlen tests. x509_crt.c - change the return code by removing MBEDTLS_ERR_X509_INVALID_EXTENSIONS, since it's added by x509_crt_frame_parse_ext not by an "or", but by "+=". Changelog - Assigned all entries to appropriate sections. ssl-opt.sh - line 8263 - merged options. - removed lines 1165 - 1176 - there was a duplicate test, probably an artifact of previous merges. check-files.py - sticked to old formatting. Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
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mbedtls_exit( 0 );
}
#else
#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
int mbedtls_hardware_poll( void *data, unsigned char *output,
size_t len, size_t *olen )
{
size_t i;
(void) data;
for( i = 0; i < len; ++i )
output[i] = rand();
*olen = len;
return( 0 );
}
#endif
int main( void )
{
FILE *f;
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int ret = 1;
int exit_code = MBEDTLS_EXIT_FAILURE;
size_t n, buflen;
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mbedtls_net_context server_fd;
unsigned char *p, *end;
unsigned char buf[2048];
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unsigned char hash[32];
const char *pers = "dh_client";
mbedtls_entropy_context entropy;
mbedtls_ctr_drbg_context ctr_drbg;
mbedtls_rsa_context rsa;
mbedtls_dhm_context dhm;
mbedtls_aes_context aes;
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mbedtls_net_init( &server_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 );
/*
* 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;
}
/*
* 2. Read the server's public RSA key
*/
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;
}
mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
if( ( ret = mbedtls_mpi_read_file( &rsa.N, 16, f ) ) != 0 ||
( ret = mbedtls_mpi_read_file( &rsa.E, 16, f ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_mpi_read_file returned %d\n\n", ret );
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fclose( f );
goto exit;
}
rsa.len = ( mbedtls_mpi_bitlen( &rsa.N ) + 7 ) >> 3;
fclose( f );
/*
* 3. Initiate the connection
*/
mbedtls_printf( "\n . Connecting to tcp/%s/%s", SERVER_NAME,
SERVER_PORT );
fflush( stdout );
if( ( ret = mbedtls_net_connect( &server_fd, SERVER_NAME,
SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_connect returned %d\n\n", ret );
goto exit;
}
/*
* 4a. First get the buffer length
*/
mbedtls_printf( "\n . Receiving the server's DH parameters" );
fflush( stdout );
memset( buf, 0, sizeof( buf ) );
if( ( ret = mbedtls_net_recv( &server_fd, buf, 2 ) ) != 2 )
{
mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
goto exit;
}
n = buflen = ( buf[0] << 8 ) | buf[1];
if( buflen < 1 || buflen > sizeof( buf ) )
{
mbedtls_printf( " failed\n ! Got an invalid buffer length\n\n" );
goto exit;
}
/*
* 4b. Get the DHM parameters: P, G and Ys = G^Xs mod P
*/
memset( buf, 0, sizeof( buf ) );
if( ( ret = mbedtls_net_recv( &server_fd, buf, n ) ) != (int) n )
{
mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
goto exit;
}
p = buf, end = buf + buflen;
if( ( ret = mbedtls_dhm_read_params( &dhm, &p, end ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_dhm_read_params returned %d\n\n", ret );
goto exit;
}
if( dhm.len < 64 || dhm.len > 512 )
{
mbedtls_printf( " failed\n ! Invalid DHM modulus size\n\n" );
goto exit;
}
/*
* 5. Check that the server's RSA signature matches
* the SHA-256 hash of (P,G,Ys)
*/
mbedtls_printf( "\n . Verifying the server's RSA signature" );
fflush( stdout );
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p += 2;
if( ( n = (size_t) ( end - p ) ) != rsa.len )
{
mbedtls_printf( " failed\n ! Invalid RSA signature size\n\n" );
goto exit;
}
if( ( ret = mbedtls_sha1_ret( buf, (int)( p - 2 - buf ), hash ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_sha1_ret returned %d\n\n", ret );
goto exit;
}
if( ( ret = mbedtls_rsa_pkcs1_verify( &rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC,
MBEDTLS_MD_SHA256, 0, hash, p ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_rsa_pkcs1_verify returned %d\n\n", ret );
goto exit;
}
/*
* 6. Send our public value: Yc = G ^ Xc mod P
*/
mbedtls_printf( "\n . Sending own public value to server" );
fflush( stdout );
n = dhm.len;
if( ( ret = mbedtls_dhm_make_public( &dhm, (int) dhm.len, buf, n,
mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_dhm_make_public returned %d\n\n", ret );
goto exit;
}
if( ( ret = mbedtls_net_send( &server_fd, buf, n ) ) != (int) n )
{
mbedtls_printf( " failed\n ! mbedtls_net_send 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 decryption 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,
* IVs and MACs.
*/
mbedtls_printf( "...\n . Receiving and decrypting the ciphertext" );
fflush( stdout );
mbedtls_aes_setkey_dec( &aes, buf, 256 );
memset( buf, 0, sizeof( buf ) );
if( ( ret = mbedtls_net_recv( &server_fd, buf, 16 ) ) != 16 )
{
mbedtls_printf( " failed\n ! mbedtls_net_recv returned %d\n\n", ret );
goto exit;
}
mbedtls_aes_crypt_ecb( &aes, MBEDTLS_AES_DECRYPT, buf, buf );
buf[16] = '\0';
mbedtls_printf( "\n . Plaintext is \"%s\"\n\n", (char *) buf );
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exit_code = MBEDTLS_EXIT_SUCCESS;
exit:
mbedtls_net_free( &server_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
Merge mbedtls 2.16.6 into baremetal Conflicts: mbedtls.doxyfile - PROJECT_NAME - mbed TLS v2.16.6 chosen. doc_mainpage.h - mbed TLS v2.16.6 version chosen. hmac_drbg.h - line 260, extended description chosen. - line 313, extended description chosen. - line 338, extended description chosen. version.h - 2.16.6 chosen. CMakeLists.txt - 2.16.6 chosen. test_suite_version.data - 2.16.6 chosen. Makefile - 141 - manual correction - baremetal version of C_SOURCE_FILES with variables for directories plus 2.16.6 CTAGS addition. pkparse.c - lines 846 onwards - the asn1_get_nonzero_mpi implementation chosen. ssl_tls.c - line 5269 - edited manually, left the ret=0, because baremetal has a different behaviour since commit 87b5626, but added a debug message that's new in 2.16.6. all.sh: - component_build_deprecated - chosen the refactored version from 2.16.6, but with extra flags from baremetal. - rest of the _no_xxx tests - merged make options to have PTHREAD=1 and other changes from 2.16.6 (like -O1 instead of -O0). - component_build_arm_none_eabi_gcc_no_64bit_multiplication - added TINYCRYPT_BUILD=0 to the 2.16.6 version of make. x509/req_app.c - left baremetal log but with mbedtls_exit( 0 ) call. x509/crl_app.c - left baremetal log but with mbedtls_exit( 0 ) call. x509/cert_app.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl/ssl_mail_client.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl/ssl_pthread_server.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl/ssl_fork_server.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl_client1.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call. ssl_client2.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call. - line 132 - new options of both branches added. - skip close notify handled as in 2.16.6, but with `ssl` instead of `&ssl`. - Merged the 2.16.6 usage split with additional baremetal usages. - Merged options from baremetal and 2.16.6. ssl_server.c - left baremetal log but with mbedtls_exit( 0 ) call. ssl_server2.c - Merged the 2.16.6 usage split with additional baremetal usages. config.pl - fixed missing defines from the documentation, removed duplicates, and reorganised so that the documentation and excluded list are ordered in the same way. test_suite_x509parse.data - only added the two new pathlen tests. x509_crt.c - change the return code by removing MBEDTLS_ERR_X509_INVALID_EXTENSIONS, since it's added by x509_crt_frame_parse_ext not by an "or", but by "+=". Changelog - Assigned all entries to appropriate sections. ssl-opt.sh - line 8263 - merged options. - removed lines 1165 - 1176 - there was a duplicate test, probably an artifact of previous merges. check-files.py - sticked to old formatting. Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-05-18 15:47:25 +00:00
mbedtls_exit( 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 */