randadv.cpp revision e64031e20c39650a7bc902a3e1aba613b9415dee
/* $Id$ */
/** @file
* IPRT - Random Numbers, Generic Glue.
*/
/*
* Copyright (C) 2008 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* 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.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
{
/* Validate. */
if (hRand == NIL_RTRAND)
return VINF_SUCCESS;
/* forward the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* wrap the call */
}
{
/* Validate. */
/* wrap the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* wrap the call */
}
{
/* Validate. */
/* wrap the call */
}
{
/* Validate. */
/* forward the call */
}
{
/* Validate. */
/* forward the call */
}
{
while (cb > 0)
{
switch (cb)
{
case 4:
case 3:
case 2:
case 1:
return; /* done */
default:
break;
}
/* advance */
cb -= 4;
pb += 4;
}
}
{
while (cb > 0)
{
switch (cb)
{
case 8:
case 7:
case 6:
case 5:
case 4:
case 3:
case 2:
case 1:
return; /* done */
default:
break;
}
/* advance */
cb -= 8;
pb += 8;
}
}
DECLCALLBACK(uint32_t) rtRandAdvSynthesizeU32FromBytes(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last)
{
union
{
} u;
if (offLast == UINT32_MAX)
/* get 4 random bytes and return them raw. */
{
/* get 4 random bytes and do simple squeeze. */
}
else
{
/* get 5 random bytes and do shifted squeeze. (this ain't perfect) */
u.off <<= 4;
}
return u.off;
}
DECLCALLBACK(uint32_t) rtRandAdvSynthesizeU32FromU64(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last)
{
}
DECLCALLBACK(uint64_t) rtRandAdvSynthesizeU64FromBytes(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last)
{
union
{
} u;
if (offLast == UINT64_MAX)
/* get 8 random bytes and return them raw. */
{
/* get 8 random bytes and do simple squeeze. */
}
else
{
/* get 9 random bytes and do shifted squeeze. (this ain't perfect) */
u.off <<= 4;
}
return u.off;
}
DECLCALLBACK(uint64_t) rtRandAdvSynthesizeU64FromU32(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last)
{
if (off <= UINT32_MAX)
+ u64First;
}
/** @copydoc RTRANDINT::pfnSeed */
{
return VERR_NOT_SUPPORTED;
}
/** @copydoc RTRANDINT::pfnSaveState */
{
return VERR_NOT_SUPPORTED;
}
/** @copydoc RTRANDINT::pfnRestoreState */
{
return VERR_NOT_SUPPORTED;
}
/** @copydoc RTRANDINT::pfnDestroy */
{
return VINF_SUCCESS;
}