diff --git a/programs/.gitignore b/programs/.gitignore index 30489bed09..d19162de1b 100644 --- a/programs/.gitignore +++ b/programs/.gitignore @@ -9,7 +9,9 @@ hash/hello hash/md5sum hash/sha1sum hash/sha2sum +pkey/dh_client pkey/dh_genprime +pkey/dh_server pkey/ecdsa pkey/ecdh_curve25519 pkey/gen_key diff --git a/programs/Makefile b/programs/Makefile index feec288419..6304aee0e4 100644 --- a/programs/Makefile +++ b/programs/Makefile @@ -55,7 +55,9 @@ APPS = \ aes/crypt_and_hash$(EXEXT) \ hash/hello$(EXEXT) \ hash/generic_sum$(EXEXT) \ + pkey/dh_client$(EXEXT) \ pkey/dh_genprime$(EXEXT) \ + pkey/dh_server$(EXEXT) \ pkey/ecdh_curve25519$(EXEXT) \ pkey/ecdsa$(EXEXT) \ pkey/gen_key$(EXEXT) \ @@ -147,10 +149,18 @@ hash/generic_sum$(EXEXT): hash/generic_sum.c $(DEP) echo " CC hash/generic_sum.c" $(CC) $(LOCAL_CFLAGS) $(CFLAGS) hash/generic_sum.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ +pkey/dh_client$(EXEXT): pkey/dh_client.c $(DEP) + echo " CC pkey/dh_client.c" + $(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/dh_client.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ + pkey/dh_genprime$(EXEXT): pkey/dh_genprime.c $(DEP) echo " CC pkey/dh_genprime.c" $(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/dh_genprime.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ +pkey/dh_server$(EXEXT): pkey/dh_server.c $(DEP) + echo " CC pkey/dh_server.c" + $(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/dh_server.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ + pkey/ecdh_curve25519$(EXEXT): pkey/ecdh_curve25519.c $(DEP) echo " CC pkey/ecdh_curve25519.c" $(CC) $(LOCAL_CFLAGS) $(CFLAGS) pkey/ecdh_curve25519.c $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@ diff --git a/programs/README.md b/programs/README.md index 44edd617a9..d26349d0f1 100644 --- a/programs/README.md +++ b/programs/README.md @@ -44,6 +44,8 @@ This subdirectory mostly contains sample programs that illustrate specific featu ### Diffie-Hellman key exchange examples +* [`pkey/dh_client.c`](pkey/dh_client.c), [`pkey/dh_server.c`](pkey/dh_server.c): secure channel demonstrators (client, server). This pair of programs illustrates how to set up a secure channel using RSA for authentication and Diffie-Hellman to generate a shared AES session key. + * [`pkey/ecdh_curve25519.c`](pkey/ecdh_curve25519.c): demonstration of a elliptic curve Diffie-Hellman (ECDH) key agreement. ### Bignum (`mpi`) usage examples diff --git a/programs/pkey/CMakeLists.txt b/programs/pkey/CMakeLists.txt index 944a100a25..5a37a42129 100644 --- a/programs/pkey/CMakeLists.txt +++ b/programs/pkey/CMakeLists.txt @@ -1,6 +1,12 @@ +add_executable(dh_client dh_client.c) +target_link_libraries(dh_client mbedtls) + add_executable(dh_genprime dh_genprime.c) target_link_libraries(dh_genprime mbedtls) +add_executable(dh_server dh_server.c) +target_link_libraries(dh_server mbedtls) + add_executable(ecdh_curve25519 ecdh_curve25519.c) target_link_libraries(ecdh_curve25519 mbedtls) @@ -52,6 +58,6 @@ target_link_libraries(pk_encrypt mbedtls) add_executable(pk_decrypt pk_decrypt.c) target_link_libraries(pk_decrypt mbedtls) -install(TARGETS dh_genprime key_app mpi_demo rsa_genkey rsa_sign rsa_verify rsa_encrypt rsa_decrypt pk_encrypt pk_decrypt pk_sign pk_verify gen_key +install(TARGETS dh_client dh_genprime dh_server key_app mpi_demo rsa_genkey rsa_sign rsa_verify rsa_encrypt rsa_decrypt pk_encrypt pk_decrypt pk_sign pk_verify gen_key DESTINATION "bin" PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE) diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c new file mode 100644 index 0000000000..1dce31aa7b --- /dev/null +++ b/programs/pkey/dh_client.c @@ -0,0 +1,325 @@ +/* + * Diffie-Hellman-Merkle key exchange (client 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 +#include +#define mbedtls_printf printf +#define mbedtls_time_t time_t +#define mbedtls_exit exit +#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 +#include +#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"); + return( 0 ); +} +#else + +#if defined(MBEDTLS_CHECK_PARAMS) +#include "mbedtls/platform_util.h" +void mbedtls_param_failed( const char *failure_condition, + const char *file, + int line ) +{ + mbedtls_printf( "%s:%i: Input param failed - %s\n", + file, line, failure_condition ); + mbedtls_exit( MBEDTLS_EXIT_FAILURE ); +} +#endif + +int main( void ) +{ + FILE *f; + + int ret = 1; + int exit_code = MBEDTLS_EXIT_FAILURE; + size_t n, buflen; + mbedtls_net_context server_fd; + + unsigned char *p, *end; + unsigned char buf[2048]; + 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; + + 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 ); + 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 ); + + 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 ); + + 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 + + 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 */ diff --git a/programs/pkey/dh_server.c b/programs/pkey/dh_server.c new file mode 100644 index 0000000000..a797e60702 --- /dev/null +++ b/programs/pkey/dh_server.c @@ -0,0 +1,348 @@ +/* + * 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 +#include +#define mbedtls_printf printf +#define mbedtls_time_t time_t +#define mbedtls_exit exit +#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 +#include +#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 + +#if defined(MBEDTLS_CHECK_PARAMS) +#include "mbedtls/platform_util.h" +void mbedtls_param_failed( const char *failure_condition, + const char *file, + int line ) +{ + mbedtls_printf( "%s:%i: Input param failed - %s\n", + file, line, failure_condition ); + mbedtls_exit( MBEDTLS_EXIT_FAILURE ); +} +#endif + +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 */ diff --git a/visualc/VS2010/dh_client.vcxproj b/visualc/VS2010/dh_client.vcxproj new file mode 100644 index 0000000000..37affb7042 --- /dev/null +++ b/visualc/VS2010/dh_client.vcxproj @@ -0,0 +1,177 @@ + + + + + Debug + Win32 + + + Debug + x64 + + + Release + Win32 + + + Release + x64 + + + + + + + + {46cf2d25-6a36-4189-b59c-e4815388e554} + true + + + + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE} + Win32Proj + dh_client + + + + Application + true + Unicode + + + Application + true + Unicode + + + Application + false + true + Unicode + + + Application + false + true + Unicode + + + + + + + + + + + + + + + + + + + true + $(Configuration)\$(TargetName)\ + + + true + $(Configuration)\$(TargetName)\ + + + false + $(Configuration)\$(TargetName)\ + + + false + $(Configuration)\$(TargetName)\ + + + + + + Level3 + Disabled + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + NotSet + kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) + Debug + + + false + + + + + + + Level3 + Disabled + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + NotSet + kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) + Debug + + + false + + + + + Level3 + + + MaxSpeed + true + true + WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + true + true + Release + kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) + + + + + Level3 + + + MaxSpeed + true + true + WIN64;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + true + true + Release + %(AdditionalDependencies); + + + + + + diff --git a/visualc/VS2010/dh_server.vcxproj b/visualc/VS2010/dh_server.vcxproj new file mode 100644 index 0000000000..1012278771 --- /dev/null +++ b/visualc/VS2010/dh_server.vcxproj @@ -0,0 +1,177 @@ + + + + + Debug + Win32 + + + Debug + x64 + + + Release + Win32 + + + Release + x64 + + + + + + + + {46cf2d25-6a36-4189-b59c-e4815388e554} + true + + + + {8D91B804-E2CE-142D-8E06-FBB037ED1F65} + Win32Proj + dh_server + + + + Application + true + Unicode + + + Application + true + Unicode + + + Application + false + true + Unicode + + + Application + false + true + Unicode + + + + + + + + + + + + + + + + + + + true + $(Configuration)\$(TargetName)\ + + + true + $(Configuration)\$(TargetName)\ + + + false + $(Configuration)\$(TargetName)\ + + + false + $(Configuration)\$(TargetName)\ + + + + + + Level3 + Disabled + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + NotSet + kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) + Debug + + + false + + + + + + + Level3 + Disabled + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + NotSet + kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) + Debug + + + false + + + + + Level3 + + + MaxSpeed + true + true + WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + true + true + Release + kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies) + + + + + Level3 + + + MaxSpeed + true + true + WIN64;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + +../../include;../../3rdparty/everest/include/;../../3rdparty/everest/include/everest;../../3rdparty/everest/include/everest/vs2010;../../3rdparty/everest/include/everest/kremlib + + + Console + true + true + true + Release + %(AdditionalDependencies); + + + + + + diff --git a/visualc/VS2010/mbedTLS.sln b/visualc/VS2010/mbedTLS.sln index 9645016d10..73102e1a98 100644 --- a/visualc/VS2010/mbedTLS.sln +++ b/visualc/VS2010/mbedTLS.sln @@ -23,11 +23,21 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "generic_sum", "generic_sum. {46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554} EndProjectSection EndProject +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dh_client", "dh_client.vcxproj", "{4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}" + ProjectSection(ProjectDependencies) = postProject + {46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554} + EndProjectSection +EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dh_genprime", "dh_genprime.vcxproj", "{718960D9-5DA6-7B56-39AD-637E81076C71}" ProjectSection(ProjectDependencies) = postProject {46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554} EndProjectSection EndProject +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dh_server", "dh_server.vcxproj", "{8D91B804-E2CE-142D-8E06-FBB037ED1F65}" + ProjectSection(ProjectDependencies) = postProject + {46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554} + EndProjectSection +EndProject Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ecdh_curve25519", "ecdh_curve25519.vcxproj", "{82EE497E-12CC-7C5B-A072-665678ACB43E}" ProjectSection(ProjectDependencies) = postProject {46CF2D25-6A36-4189-B59C-E4815388E554} = {46CF2D25-6A36-4189-B59C-E4815388E554} @@ -296,6 +306,14 @@ Global {D071CCF7-ACA0-21F8-D382-52A759AEA261}.Release|Win32.Build.0 = Release|Win32 {D071CCF7-ACA0-21F8-D382-52A759AEA261}.Release|x64.ActiveCfg = Release|x64 {D071CCF7-ACA0-21F8-D382-52A759AEA261}.Release|x64.Build.0 = Release|x64 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|Win32.ActiveCfg = Debug|Win32 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|Win32.Build.0 = Debug|Win32 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|x64.ActiveCfg = Debug|x64 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Debug|x64.Build.0 = Debug|x64 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|Win32.ActiveCfg = Release|Win32 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|Win32.Build.0 = Release|Win32 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|x64.ActiveCfg = Release|x64 + {4D29BE4A-979C-C5AE-44B5-30FB37D8D4EE}.Release|x64.Build.0 = Release|x64 {718960D9-5DA6-7B56-39AD-637E81076C71}.Debug|Win32.ActiveCfg = Debug|Win32 {718960D9-5DA6-7B56-39AD-637E81076C71}.Debug|Win32.Build.0 = Debug|Win32 {718960D9-5DA6-7B56-39AD-637E81076C71}.Debug|x64.ActiveCfg = Debug|x64 @@ -304,6 +322,14 @@ Global {718960D9-5DA6-7B56-39AD-637E81076C71}.Release|Win32.Build.0 = Release|Win32 {718960D9-5DA6-7B56-39AD-637E81076C71}.Release|x64.ActiveCfg = Release|x64 {718960D9-5DA6-7B56-39AD-637E81076C71}.Release|x64.Build.0 = Release|x64 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|Win32.ActiveCfg = Debug|Win32 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|Win32.Build.0 = Debug|Win32 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|x64.ActiveCfg = Debug|x64 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Debug|x64.Build.0 = Debug|x64 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|Win32.ActiveCfg = Release|Win32 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|Win32.Build.0 = Release|Win32 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|x64.ActiveCfg = Release|x64 + {8D91B804-E2CE-142D-8E06-FBB037ED1F65}.Release|x64.Build.0 = Release|x64 {82EE497E-12CC-7C5B-A072-665678ACB43E}.Debug|Win32.ActiveCfg = Debug|Win32 {82EE497E-12CC-7C5B-A072-665678ACB43E}.Debug|Win32.Build.0 = Debug|Win32 {82EE497E-12CC-7C5B-A072-665678ACB43E}.Debug|x64.ActiveCfg = Debug|x64