/** @file
 * IPRT - Crypto - Miscellaneous.
 */

/*
 * Copyright (C) 2018-2020 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
 * VirtualBox OSE distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 */

#ifndef IPRT_INCLUDED_crypto_misc_h
#define IPRT_INCLUDED_crypto_misc_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif

#include <iprt/types.h>


RT_C_DECLS_BEGIN

/** @defgroup grp_rt_crmisc RTCrMisc - Miscellaneous
 * @ingroup grp_rt_crypto
 * @{
 */

/**
 * Get cryptographically strong random bytes.
 *
 * The buffer will always be filled with random bytes, however only
 * on @c VINF_SUCCESS is it guaranteed to be strong random bytes.
 *
 * @retval  VINF_SUCCESS
 * @retval  VERR_CR_RANDOM_FAILED if insufficient strong random bytes or some similar failure.
 * @retval  VERR_CR_RANDOM_SETUP_FAILED if setting up strong random failed
 *          and no strong bytes returned.
 *
 * @param   pvDst               Where to return the random bytes.
 * @param   cbDst               How many random bytes to return.
 */
RTDECL(int) RTCrRandBytes(void *pvDst, size_t cbDst);

RTDECL(int) RTCrPkcs5Pbkdf2Hmac(void const *pvInput, size_t cbInput, void const *pvSalt, size_t cbSalt, uint32_t cIterations,
                                RTDIGESTTYPE enmDigestType, size_t cbKeyLen, void *pvOutput);

/** @} */

RT_C_DECLS_END

#endif /* !IPRT_INCLUDED_crypto_misc_h */