/* BEGIN_HEADER */ #include "mbedtls/ecdh.h" static int load_public_key( int grp_id, data_t *point, mbedtls_ecp_keypair *ecp ) { int ok = 0; TEST_ASSERT( mbedtls_ecp_group_load( &ecp->grp, grp_id ) == 0 ); TEST_ASSERT( mbedtls_ecp_point_read_binary( &ecp->grp, &ecp->Q, point->x, point->len ) == 0 ); TEST_ASSERT( mbedtls_ecp_check_pubkey( &ecp->grp, &ecp->Q ) == 0 ); ok = 1; exit: return( ok ); } static int load_private_key( int grp_id, data_t *private_key, mbedtls_ecp_keypair *ecp, mbedtls_test_rnd_pseudo_info *rnd_info ) { int ok = 0; TEST_ASSERT( mbedtls_ecp_read_key( grp_id, ecp, private_key->x, private_key->len ) == 0 ); TEST_ASSERT( mbedtls_ecp_check_privkey( &ecp->grp, &ecp->d ) == 0 ); /* Calculate the public key from the private key. */ TEST_ASSERT( mbedtls_ecp_mul( &ecp->grp, &ecp->Q, &ecp->d, &ecp->grp.G, &mbedtls_test_rnd_pseudo_rand, rnd_info ) == 0 ); ok = 1; exit: return( ok ); } /* END_HEADER */ /* BEGIN_DEPENDENCIES * depends_on:MBEDTLS_ECDH_C * END_DEPENDENCIES */ /* BEGIN_CASE */ void ecdh_valid_param( ) { TEST_VALID_PARAM( mbedtls_ecdh_free( NULL ) ); } /* END_CASE */ /* BEGIN_CASE depends_on:MBEDTLS_CHECK_PARAMS:!MBEDTLS_PARAM_FAILED_ALT */ void ecdh_invalid_param( ) { mbedtls_ecp_group grp; mbedtls_ecdh_context ctx; mbedtls_mpi m; mbedtls_ecp_point P; mbedtls_ecp_keypair kp; size_t olen; unsigned char buf[42] = { 0 }; const unsigned char *buf_null = NULL; size_t const buflen = sizeof( buf ); int invalid_side = 42; mbedtls_ecp_group_id valid_grp = MBEDTLS_ECP_DP_SECP192R1; TEST_INVALID_PARAM( mbedtls_ecdh_init( NULL ) ); #if defined(MBEDTLS_ECP_RESTARTABLE) TEST_INVALID_PARAM( mbedtls_ecdh_enable_restart( NULL ) ); #endif /* MBEDTLS_ECP_RESTARTABLE */ TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_gen_public( NULL, &m, &P, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_gen_public( &grp, NULL, &P, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_gen_public( &grp, &m, NULL, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_gen_public( &grp, &m, &P, NULL, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_compute_shared( NULL, &m, &P, &m, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_compute_shared( &grp, NULL, &P, &m, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_compute_shared( &grp, &m, NULL, &m, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_compute_shared( &grp, &m, &P, NULL, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_setup( NULL, valid_grp ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_params( NULL, &olen, buf, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_params( &ctx, NULL, buf, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_params( &ctx, &olen, NULL, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_params( &ctx, &olen, buf, buflen, NULL, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_read_params( NULL, (const unsigned char**) &buf, buf ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_read_params( &ctx, &buf_null, buf ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_read_params( &ctx, NULL, buf ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_read_params( &ctx, (const unsigned char**) &buf, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_get_params( NULL, &kp, MBEDTLS_ECDH_OURS ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_get_params( &ctx, NULL, MBEDTLS_ECDH_OURS ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_get_params( &ctx, &kp, invalid_side ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_public( NULL, &olen, buf, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_public( &ctx, NULL, buf, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_public( &ctx, &olen, NULL, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_make_public( &ctx, &olen, buf, buflen, NULL, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_read_public( NULL, buf, buflen ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_read_public( &ctx, NULL, buflen ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_calc_secret( NULL, &olen, buf, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_calc_secret( &ctx, NULL, buf, buflen, mbedtls_test_rnd_std_rand, NULL ) ); TEST_INVALID_PARAM_RET( MBEDTLS_ERR_ECP_BAD_INPUT_DATA, mbedtls_ecdh_calc_secret( &ctx, &olen, NULL, buflen, mbedtls_test_rnd_std_rand, NULL ) ); exit: return; } /* END_CASE */ /* BEGIN_CASE */ void ecdh_primitive_random( int id ) { mbedtls_ecp_group grp; mbedtls_ecp_point qA, qB; mbedtls_mpi dA, dB, zA, zB; mbedtls_test_rnd_pseudo_info rnd_info; mbedtls_ecp_group_init( &grp ); mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB ); mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB ); mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB ); memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) ); TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 ); TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &zB ) == 0 ); exit: mbedtls_ecp_group_free( &grp ); mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB ); mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB ); mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB ); } /* END_CASE */ /* BEGIN_CASE */ void ecdh_primitive_testvec( int id, data_t * rnd_buf_A, char * xA_str, char * yA_str, data_t * rnd_buf_B, char * xB_str, char * yB_str, char * z_str ) { mbedtls_ecp_group grp; mbedtls_ecp_point qA, qB; mbedtls_mpi dA, dB, zA, zB, check; mbedtls_test_rnd_buf_info rnd_info_A, rnd_info_B; mbedtls_ecp_group_init( &grp ); mbedtls_ecp_point_init( &qA ); mbedtls_ecp_point_init( &qB ); mbedtls_mpi_init( &dA ); mbedtls_mpi_init( &dB ); mbedtls_mpi_init( &zA ); mbedtls_mpi_init( &zB ); mbedtls_mpi_init( &check ); TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 ); rnd_info_A.buf = rnd_buf_A->x; rnd_info_A.length = rnd_buf_A->len; /* Fix rnd_buf_A->x by shifting it left if necessary */ if( grp.nbits % 8 != 0 ) { unsigned char shift = 8 - ( grp.nbits % 8 ); size_t i; for( i = 0; i < rnd_info_A.length - 1; i++ ) rnd_buf_A->x[i] = rnd_buf_A->x[i] << shift | rnd_buf_A->x[i+1] >> ( 8 - shift ); rnd_buf_A->x[rnd_info_A.length-1] <<= shift; } rnd_info_B.buf = rnd_buf_B->x; rnd_info_B.length = rnd_buf_B->len; /* Fix rnd_buf_B->x by shifting it left if necessary */ if( grp.nbits % 8 != 0 ) { unsigned char shift = 8 - ( grp.nbits % 8 ); size_t i; for( i = 0; i < rnd_info_B.length - 1; i++ ) rnd_buf_B->x[i] = rnd_buf_B->x[i] << shift | rnd_buf_B->x[i+1] >> ( 8 - shift ); rnd_buf_B->x[rnd_info_B.length-1] <<= shift; } TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dA, &qA, mbedtls_test_rnd_buffer_rand, &rnd_info_A ) == 0 ); TEST_ASSERT( ! mbedtls_ecp_is_zero( &qA ) ); TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xA_str ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.X, &check ) == 0 ); TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yA_str ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qA.Y, &check ) == 0 ); TEST_ASSERT( mbedtls_ecdh_gen_public( &grp, &dB, &qB, mbedtls_test_rnd_buffer_rand, &rnd_info_B ) == 0 ); TEST_ASSERT( ! mbedtls_ecp_is_zero( &qB ) ); TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, xB_str ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.X, &check ) == 0 ); TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, yB_str ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &qB.Y, &check ) == 0 ); TEST_ASSERT( mbedtls_mpi_read_string( &check, 16, z_str ) == 0 ); TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zA, &qB, &dA, NULL, NULL ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zA, &check ) == 0 ); TEST_ASSERT( mbedtls_ecdh_compute_shared( &grp, &zB, &qA, &dB, NULL, NULL ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &zB, &check ) == 0 ); exit: mbedtls_ecp_group_free( &grp ); mbedtls_ecp_point_free( &qA ); mbedtls_ecp_point_free( &qB ); mbedtls_mpi_free( &dA ); mbedtls_mpi_free( &dB ); mbedtls_mpi_free( &zA ); mbedtls_mpi_free( &zB ); mbedtls_mpi_free( &check ); } /* END_CASE */ /* BEGIN_CASE */ void ecdh_exchange( int id ) { mbedtls_ecdh_context srv, cli; unsigned char buf[1000]; const unsigned char *vbuf; size_t len; mbedtls_test_rnd_pseudo_info rnd_info; unsigned char res_buf[1000]; size_t res_len; mbedtls_ecdh_init( &srv ); mbedtls_ecdh_init( &cli ); memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) ); TEST_ASSERT( mbedtls_ecdh_setup( &srv, id ) == 0 ); memset( buf, 0x00, sizeof( buf ) ); vbuf = buf; TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 ); memset( buf, 0x00, sizeof( buf ) ); TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 ); TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &res_len, res_buf, 1000, NULL, NULL ) == 0 ); TEST_ASSERT( len == res_len ); TEST_ASSERT( memcmp( buf, res_buf, len ) == 0 ); exit: mbedtls_ecdh_free( &srv ); mbedtls_ecdh_free( &cli ); } /* END_CASE */ /* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE */ void ecdh_restart( int id, char *dA_str, char *dB_str, char *z_str, int enable, int max_ops, int min_restart, int max_restart ) { int ret; mbedtls_ecdh_context srv, cli; unsigned char buf[1000]; const unsigned char *vbuf; size_t len; unsigned char z[MBEDTLS_ECP_MAX_BYTES]; size_t z_len; unsigned char rnd_buf_A[MBEDTLS_ECP_MAX_BYTES]; unsigned char rnd_buf_B[MBEDTLS_ECP_MAX_BYTES]; mbedtls_test_rnd_buf_info rnd_info_A, rnd_info_B; int cnt_restart; mbedtls_ecp_group grp; mbedtls_ecp_group_init( &grp ); mbedtls_ecdh_init( &srv ); mbedtls_ecdh_init( &cli ); z_len = mbedtls_test_unhexify( z, z_str ); rnd_info_A.buf = rnd_buf_A; rnd_info_A.length = mbedtls_test_unhexify( rnd_buf_A, dA_str ); rnd_info_B.buf = rnd_buf_B; rnd_info_B.length = mbedtls_test_unhexify( rnd_buf_B, dB_str ); /* The ECDH context is not guaranteed ot have an mbedtls_ecp_group structure * in every configuration, therefore we load it separately. */ TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 ); /* Otherwise we would have to fix the random buffer, * as in ecdh_primitive_testvec. */ TEST_ASSERT( grp.nbits % 8 == 0 ); TEST_ASSERT( mbedtls_ecdh_setup( &srv, id ) == 0 ); /* set up restart parameters */ mbedtls_ecp_set_max_ops( max_ops ); if( enable ) { mbedtls_ecdh_enable_restart( &srv ); mbedtls_ecdh_enable_restart( &cli ); } /* server writes its parameters */ memset( buf, 0x00, sizeof( buf ) ); len = 0; cnt_restart = 0; do { ret = mbedtls_ecdh_make_params( &srv, &len, buf, sizeof( buf ), mbedtls_test_rnd_buffer_rand, &rnd_info_A ); } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart ); TEST_ASSERT( ret == 0 ); TEST_ASSERT( cnt_restart >= min_restart ); TEST_ASSERT( cnt_restart <= max_restart ); /* client read server params */ vbuf = buf; TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 ); /* client writes its key share */ memset( buf, 0x00, sizeof( buf ) ); len = 0; cnt_restart = 0; do { ret = mbedtls_ecdh_make_public( &cli, &len, buf, sizeof( buf ), mbedtls_test_rnd_buffer_rand, &rnd_info_B ); } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart ); TEST_ASSERT( ret == 0 ); TEST_ASSERT( cnt_restart >= min_restart ); TEST_ASSERT( cnt_restart <= max_restart ); /* server reads client key share */ TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 ); /* server computes shared secret */ memset( buf, 0, sizeof( buf ) ); len = 0; cnt_restart = 0; do { ret = mbedtls_ecdh_calc_secret( &srv, &len, buf, sizeof( buf ), NULL, NULL ); } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart ); TEST_ASSERT( ret == 0 ); TEST_ASSERT( cnt_restart >= min_restart ); TEST_ASSERT( cnt_restart <= max_restart ); TEST_ASSERT( len == z_len ); TEST_ASSERT( memcmp( buf, z, len ) == 0 ); /* client computes shared secret */ memset( buf, 0, sizeof( buf ) ); len = 0; cnt_restart = 0; do { ret = mbedtls_ecdh_calc_secret( &cli, &len, buf, sizeof( buf ), NULL, NULL ); } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart ); TEST_ASSERT( ret == 0 ); TEST_ASSERT( cnt_restart >= min_restart ); TEST_ASSERT( cnt_restart <= max_restart ); TEST_ASSERT( len == z_len ); TEST_ASSERT( memcmp( buf, z, len ) == 0 ); exit: mbedtls_ecp_group_free( &grp ); mbedtls_ecdh_free( &srv ); mbedtls_ecdh_free( &cli ); } /* END_CASE */ /* BEGIN_CASE depends_on:MBEDTLS_ECDH_LEGACY_CONTEXT */ void ecdh_exchange_legacy( int id ) { mbedtls_ecdh_context srv, cli; unsigned char buf[1000]; const unsigned char *vbuf; size_t len; mbedtls_test_rnd_pseudo_info rnd_info; mbedtls_ecdh_init( &srv ); mbedtls_ecdh_init( &cli ); memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) ); TEST_ASSERT( mbedtls_ecp_group_load( &srv.grp, id ) == 0 ); memset( buf, 0x00, sizeof( buf ) ); vbuf = buf; TEST_ASSERT( mbedtls_ecdh_make_params( &srv, &len, buf, 1000, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_read_params( &cli, &vbuf, buf + len ) == 0 ); memset( buf, 0x00, sizeof( buf ) ); TEST_ASSERT( mbedtls_ecdh_make_public( &cli, &len, buf, 1000, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_read_public( &srv, buf, len ) == 0 ); TEST_ASSERT( mbedtls_ecdh_calc_secret( &srv, &len, buf, 1000, &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( mbedtls_ecdh_calc_secret( &cli, &len, buf, 1000, NULL, NULL ) == 0 ); TEST_ASSERT( mbedtls_mpi_cmp_mpi( &srv.z, &cli.z ) == 0 ); exit: mbedtls_ecdh_free( &srv ); mbedtls_ecdh_free( &cli ); } /* END_CASE */ /* BEGIN_CASE */ void ecdh_exchange_calc_secret( int grp_id, data_t *our_private_key, data_t *their_point, int ours_first, data_t *expected ) { mbedtls_test_rnd_pseudo_info rnd_info; mbedtls_ecp_keypair our_key; mbedtls_ecp_keypair their_key; mbedtls_ecdh_context ecdh; unsigned char shared_secret[MBEDTLS_ECP_MAX_BYTES]; size_t shared_secret_length = 0; memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) ); mbedtls_ecdh_init( &ecdh ); mbedtls_ecp_keypair_init( &our_key ); mbedtls_ecp_keypair_init( &their_key ); if( ! load_private_key( grp_id, our_private_key, &our_key, &rnd_info ) ) goto exit; if( ! load_public_key( grp_id, their_point, &their_key ) ) goto exit; /* Import the keys to the ECDH calculation. */ if( ours_first ) { TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 ); TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 ); } else { TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 ); TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 ); } /* Perform the ECDH calculation. */ TEST_ASSERT( mbedtls_ecdh_calc_secret( &ecdh, &shared_secret_length, shared_secret, sizeof( shared_secret ), &mbedtls_test_rnd_pseudo_rand, &rnd_info ) == 0 ); TEST_ASSERT( shared_secret_length == expected->len ); TEST_ASSERT( memcmp( expected->x, shared_secret, shared_secret_length ) == 0 ); exit: mbedtls_ecdh_free( &ecdh ); mbedtls_ecp_keypair_free( &our_key ); mbedtls_ecp_keypair_free( &their_key ); } /* END_CASE */ /* BEGIN_CASE */ void ecdh_exchange_get_params_fail( int our_grp_id, data_t *our_private_key, int their_grp_id, data_t *their_point, int ours_first, int expected_ret ) { mbedtls_test_rnd_pseudo_info rnd_info; mbedtls_ecp_keypair our_key; mbedtls_ecp_keypair their_key; mbedtls_ecdh_context ecdh; memset( &rnd_info, 0x00, sizeof( mbedtls_test_rnd_pseudo_info ) ); mbedtls_ecdh_init( &ecdh ); mbedtls_ecp_keypair_init( &our_key ); mbedtls_ecp_keypair_init( &their_key ); if( ! load_private_key( our_grp_id, our_private_key, &our_key, &rnd_info ) ) goto exit; if( ! load_public_key( their_grp_id, their_point, &their_key ) ) goto exit; if( ours_first ) { TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &our_key, MBEDTLS_ECDH_OURS ) == 0 ); TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == expected_ret ); } else { TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &their_key, MBEDTLS_ECDH_THEIRS ) == 0 ); TEST_ASSERT( mbedtls_ecdh_get_params( &ecdh, &our_key, MBEDTLS_ECDH_OURS ) == expected_ret ); } exit: mbedtls_ecdh_free( &ecdh ); mbedtls_ecp_keypair_free( &our_key ); mbedtls_ecp_keypair_free( &their_key ); } /* END_CASE */