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/*
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* Copyright (C) 2017 Red Hat, Inc.
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*
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* Author: Nikos Mavrogiannopoulos
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*
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* This file is part of GnuTLS.
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*
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* GnuTLS is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuTLS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GnuTLS. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* This is a unit test of _gnutls_record_overhead. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <setjmp.h>
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#include <cmocka.h>
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#include <gnutls/gnutls.h>
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#include "../lib/gnutls_int.h"
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#undef _gnutls_debug_log
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#undef gnutls_assert
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#undef gnutls_assert_val
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#define _gnutls_debug_log printf
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#define gnutls_assert()
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#define gnutls_assert_val(val) val
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#include "../lib/algorithms.h"
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int _gnutls_record_overhead(const cipher_entry_st * cipher,
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const mac_entry_st * mac,
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unsigned max);
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#define OVERHEAD(c, m) \
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_gnutls_record_overhead(cipher_to_entry(c), mac_to_entry(m), \
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0)
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#define MAX_OVERHEAD(c, m) \
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_gnutls_record_overhead(cipher_to_entry(c), mac_to_entry(m), \
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1)
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static void check_aes_gcm(void **glob_state)
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{
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const unsigned ov = 16+8;
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/* Under AES-GCM the overhead is constant */
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assert_int_equal(OVERHEAD(GNUTLS_CIPHER_AES_128_GCM, GNUTLS_MAC_AEAD), ov);
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assert_int_equal(MAX_OVERHEAD(GNUTLS_CIPHER_AES_128_GCM, GNUTLS_MAC_AEAD), ov);
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}
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static void check_aes_sha1_min(void **glob_state)
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{
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const unsigned mac = 20;
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const unsigned block = 16;
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assert_int_equal(OVERHEAD(GNUTLS_CIPHER_AES_128_CBC, GNUTLS_MAC_SHA1), 1+mac+block);
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}
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static void check_aes_sha1_max(void **glob_state)
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{
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const unsigned mac = 20;
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const unsigned block = 16;
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assert_int_equal(MAX_OVERHEAD(GNUTLS_CIPHER_AES_128_CBC, GNUTLS_MAC_SHA1), block+mac+block);
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}
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int main(void)
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{
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const struct CMUnitTest tests[] = {
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cmocka_unit_test(check_aes_gcm),
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cmocka_unit_test(check_aes_sha1_min),
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cmocka_unit_test(check_aes_sha1_max)
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};
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return cmocka_run_group_tests(tests, NULL, NULL);
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}
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