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/*
* test-core-secure.cpp - test secured data functions
*
* Copyright (C) 2018-2020 Sébastien Helleu <flashcode@flashtux.org>
*
* This file is part of WeeChat, the extensible chat client.
*
* WeeChat is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* WeeChat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WeeChat. If not, see <https://www.gnu.org/licenses/>.
*/
#include "CppUTest/TestHarness.h"
extern "C"
{
#include <string.h>
#include <gcrypt.h>
#include "src/core/wee-secure.h"
#include "src/core/wee-string.h"
#define SECURE_PASSPHRASE "this_is_a_secret_passphrase"
#define SECURE_PASSWORD "this_is_a_secret_password"
#define TOTP_SECRET "secretpasswordbase32"
extern int secure_derive_key (const char *salt, const char *passphrase,
unsigned char *key, int length_key);
}
TEST_GROUP(CoreSecure)
{
};
/*
* Tests functions:
* secure_derive_key
*/
TEST(CoreSecure, DeriveKey)
{
char salt[SECURE_SALT_SIZE], zeroes[32];
unsigned char *key;
const char *passphrase = "this is the passphrase";
const char *sha512 = "a81161a80731aa439adff8dfde94540a258b5d912f3579ec7b4"
"709968ed0f466e9c63f29d86196aee2c2725f046ef1c074ee790dbabb2ddb09ce85d"
"4a12bba0e";
unsigned char sha512_bin[64 + 1];
memset (salt, 'A', SECURE_SALT_SIZE);
memset (zeroes, 0, 32);
key = (unsigned char *)malloc (64); /* SHA512 */
string_base16_decode (sha512, (char *)sha512_bin);
LONGS_EQUAL(0, secure_derive_key (NULL, NULL, NULL, 0));
LONGS_EQUAL(0, secure_derive_key (salt, NULL, NULL, 0));
LONGS_EQUAL(0, secure_derive_key (salt, passphrase, NULL, 0));
LONGS_EQUAL(0, secure_derive_key (salt, passphrase, key, 0));
/* test with key size == 64 (SHA512) */
memset (key, 0, 64);
LONGS_EQUAL(1, secure_derive_key (salt, passphrase, key, 64));
MEMCMP_EQUAL(sha512_bin, key, 64);
/* test with key size == 32 (too small for SHA512) */
memset (key, 0, 64);
LONGS_EQUAL(1, secure_derive_key (salt, passphrase, key, 32));
MEMCMP_EQUAL(sha512_bin, key, 32);
MEMCMP_EQUAL(zeroes, key + 32, 32);
free (key);
}
/*
* Tests functions:
* secure_encrypt_data
* secure_decrypt_data
*/
TEST(CoreSecure, EncryptDecryptData)
{
const char *password = SECURE_PASSWORD;
int hash_algo, cipher, rc;
int length_password, length_encrypted_data, length_decrypted_data;
char *encrypted_data, *decrypted_data;
/* compute length of password, including the final \0 */
length_password = strlen (password) + 1;
for (hash_algo = 0; secure_hash_algo_string[hash_algo]; hash_algo++)
{
for (cipher = 0; secure_cipher_string[cipher]; cipher++)
{
/* initialize data */
encrypted_data = NULL;
decrypted_data = NULL;
length_encrypted_data = 0;
length_decrypted_data = 0;
/*
* encrypt the password with a hash algo, cipher and arbitrary
* passphrase
*/
rc = secure_encrypt_data (password,
length_password,
secure_hash_algo[hash_algo],
secure_cipher[cipher],
SECURE_PASSPHRASE,
&encrypted_data,
&length_encrypted_data);
LONGS_EQUAL(0, rc);
/* decrypt the encrypted password */
rc = secure_decrypt_data (encrypted_data,
length_encrypted_data,
secure_hash_algo[hash_algo],
secure_cipher[cipher],
SECURE_PASSPHRASE,
&decrypted_data,
&length_decrypted_data);
LONGS_EQUAL(0, rc);
/* check decrypted data */
LONGS_EQUAL(length_password, length_decrypted_data);
STRCMP_EQUAL(password, decrypted_data);
/* free encrypted/decrypted data */
free (encrypted_data);
free (decrypted_data);
}
}
}
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