Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 800 insertions, 0 deletions

diff --git a/src/VBox/Runtime/common/rand/Makefile.kup b/src/VBox/Runtime/common/rand/Makefile.kup
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/VBox/Runtime/common/rand/Makefile.kup
diff --git a/src/VBox/Runtime/common/rand/rand.cpp b/src/VBox/Runtime/common/rand/rand.cpp
new file mode 100644
index 00000000..ef16b3a3
--- /dev/null
+++ b/src/VBox/Runtime/common/rand/rand.cpp
@@ -0,0 +1,176 @@
+/* $Id: rand.cpp $ */
+/** @file
+ * IPRT - Random Numbers.
+ */
+
+/*
+ * Copyright (C) 2006-2020 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.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/rand.h>
+#include "internal/iprt.h"
+
+#include <iprt/time.h>
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+# include <iprt/asm-amd64-x86.h>
+#endif
+#include <iprt/errcore.h>
+#include <iprt/assert.h>
+#include <iprt/thread.h>
+#include <iprt/once.h>
+#include "internal/rand.h"
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** For lazily initializing of the random generator. */
+static RTONCE g_rtRandOnce = RTONCE_INITIALIZER;
+/** The default random generator. */
+static RTRAND g_hRand = NIL_RTRAND;
+
+
+/**
+ * Perform lazy initialization.
+ *
+ * @returns IPRT status code.
+ * @param   pvUser      Ignored.
+ */
+static DECLCALLBACK(int) rtRandInitOnce(void *pvUser)
+{
+    RTRAND hRand;
+    int rc = RTRandAdvCreateSystemFaster(&hRand);
+    if (RT_FAILURE(rc))
+        rc = RTRandAdvCreateParkMiller(&hRand);
+    if (RT_SUCCESS(rc))
+    {
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+        RTRandAdvSeed(hRand, ASMReadTSC() >> 8);
+#else
+        RTRandAdvSeed(hRand, RTTimeNanoTS() >> 8);
+#endif
+        g_hRand = hRand;
+    }
+    else
+        AssertRC(rc);
+
+    NOREF(pvUser);
+    return rc;
+}
+
+
+/**
+ * Termination counterpart to rtRandInitOnce.
+ *
+ * @returns IPRT status code.
+ * @param   pvUser          Ignored.
+ * @param   fLazyCleanUpOk  Set if we're terminating the process.
+ */
+static DECLCALLBACK(void) rtRandTermOnce(void *pvUser, bool fLazyCleanUpOk)
+{
+    if (!fLazyCleanUpOk)
+    {
+        RTRAND hRand = g_hRand;
+        g_hRand = NIL_RTRAND;
+        if (hRand != NIL_RTRAND)
+        {
+            int rc = RTRandAdvDestroy(hRand);
+            AssertRC(rc);
+        }
+    }
+    NOREF(pvUser);
+}
+
+
+RTDECL(void) RTRandBytes(void *pv, size_t cb) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    RTRandAdvBytes(g_hRand, pv, cb);
+}
+RT_EXPORT_SYMBOL(RTRandBytes);
+
+
+RTDECL(uint32_t) RTRandU32Ex(uint32_t u32First, uint32_t u32Last) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvU32Ex(g_hRand, u32First, u32Last);
+}
+RT_EXPORT_SYMBOL(RTRandU32Ex);
+
+
+RTDECL(uint32_t) RTRandU32(void) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvU32(g_hRand);
+}
+RT_EXPORT_SYMBOL(RTRandU32);
+
+
+RTDECL(int32_t) RTRandS32Ex(int32_t i32First, int32_t i32Last) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvS32Ex(g_hRand, i32First, i32Last);
+}
+RT_EXPORT_SYMBOL(RTRandS32Ex);
+
+
+RTDECL(int32_t) RTRandS32(void) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvS32(g_hRand);
+}
+RT_EXPORT_SYMBOL(RTRandS32);
+
+
+RTDECL(uint64_t) RTRandU64Ex(uint64_t u64First, uint64_t u64Last) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvU64Ex(g_hRand, u64First, u64Last);
+}
+RT_EXPORT_SYMBOL(RTRandU64Ex);
+
+
+RTDECL(uint64_t) RTRandU64(void) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvU64(g_hRand);
+}
+RT_EXPORT_SYMBOL(RTRandU64);
+
+
+RTDECL(int64_t) RTRandS64Ex(int64_t i64First, int64_t i64Last) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvS64Ex(g_hRand, i64First, i64Last);
+}
+RT_EXPORT_SYMBOL(RTRandS64Ex);
+
+
+RTDECL(int64_t) RTRandS64(void) RT_NO_THROW_DEF
+{
+    RTOnceEx(&g_rtRandOnce, rtRandInitOnce, rtRandTermOnce, NULL);
+    return RTRandAdvS32(g_hRand);
+}
+RT_EXPORT_SYMBOL(RTRandS64);
+
diff --git a/src/VBox/Runtime/common/rand/randadv.cpp b/src/VBox/Runtime/common/rand/randadv.cpp
new file mode 100644
index 00000000..3ddf7a2d
--- /dev/null
+++ b/src/VBox/Runtime/common/rand/randadv.cpp
@@ -0,0 +1,414 @@
+/* $Id: randadv.cpp $ */
+/** @file
+ * IPRT - Random Numbers, Generic Glue.
+ */
+
+/*
+ * Copyright (C) 2008-2020 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.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/rand.h>
+#include "internal/iprt.h"
+
+#include <iprt/mem.h>
+#include <iprt/errcore.h>
+#include <iprt/assert.h>
+#include "internal/magics.h"
+#include "internal/rand.h"
+
+
+RTDECL(int) RTRandAdvDestroy(RTRAND hRand) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    if (hRand == NIL_RTRAND)
+        return VINF_SUCCESS;
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, VERR_INVALID_HANDLE);
+
+    /* forward the call */
+    return pThis->pfnDestroy(pThis);
+}
+RT_EXPORT_SYMBOL(RTRandAdvDestroy);
+
+
+RTDECL(int) RTRandAdvSeed(RTRAND hRand, uint64_t u64Seed) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, VERR_INVALID_HANDLE);
+
+    /* forward the call */
+    return pThis->pfnSeed(pThis, u64Seed);
+}
+RT_EXPORT_SYMBOL(RTRandAdvSeed);
+
+
+RTDECL(int) RTRandAdvSaveState(RTRAND hRand, char *pszState, size_t *pcbState) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, VERR_INVALID_HANDLE);
+    AssertPtrNull(pszState);
+    AssertPtr(pcbState);
+
+    /* forward the call */
+    return pThis->pfnSaveState(pThis, pszState, pcbState);
+}
+RT_EXPORT_SYMBOL(RTRandAdvSaveState);
+
+
+RTDECL(int) RTRandAdvRestoreState(RTRAND hRand, char const *pszState) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, VERR_INVALID_HANDLE);
+    AssertPtr(pszState);
+
+    /* forward the call */
+    return pThis->pfnRestoreState(pThis, pszState);
+}
+RT_EXPORT_SYMBOL(RTRandAdvRestoreState);
+
+
+RTDECL(void) RTRandAdvBytes(RTRAND hRand, void *pv, size_t cb) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturnVoid(pThis);
+    AssertReturnVoid(pThis->u32Magic == RTRANDINT_MAGIC);
+    AssertPtr(pv);
+
+    /* forward the call */
+    return pThis->pfnGetBytes(pThis, (uint8_t *)pv, cb);
+}
+RT_EXPORT_SYMBOL(RTRandAdvBytes);
+
+
+RTDECL(int32_t) RTRandAdvS32Ex(RTRAND hRand, int32_t i32First, int32_t i32Last) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, INT32_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, INT32_MAX);
+
+    /* wrap the call */
+    return pThis->pfnGetU32(pThis, 0, i32Last - i32First) + i32First;
+}
+RT_EXPORT_SYMBOL(RTRandAdvS32Ex);
+
+
+RTDECL(int32_t) RTRandAdvS32(RTRAND hRand) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, INT32_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, INT32_MAX);
+
+    /* wrap the call */
+    return pThis->pfnGetU32(pThis, 0, UINT32_MAX) + INT32_MAX;
+}
+RT_EXPORT_SYMBOL(RTRandAdvS32);
+
+
+RTDECL(uint32_t) RTRandAdvU32Ex(RTRAND hRand, uint32_t u32First, uint32_t u32Last) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, UINT32_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, UINT32_MAX);
+
+    /* forward the call */
+    return pThis->pfnGetU32(pThis, u32First, u32Last);
+}
+RT_EXPORT_SYMBOL(RTRandAdvU32Ex);
+
+
+RTDECL(uint32_t) RTRandAdvU32(RTRAND hRand) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, UINT32_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, UINT32_MAX);
+
+    /* forward the call */
+    return pThis->pfnGetU32(pThis, 0, UINT32_MAX);
+}
+RT_EXPORT_SYMBOL(RTRandAdvU32);
+
+
+RTDECL(int64_t) RTRandAdvS64Ex(RTRAND hRand, int64_t i64First, int64_t i64Last) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, INT64_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, INT64_MAX);
+
+    /* wrap the call */
+    return pThis->pfnGetU64(pThis, 0, i64Last - i64First) + i64First;
+}
+RT_EXPORT_SYMBOL(RTRandAdvS64Ex);
+
+
+RTDECL(int64_t) RTRandAdvS64(RTRAND hRand) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, INT64_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, INT64_MAX);
+
+    /* wrap the call */
+    return pThis->pfnGetU64(pThis, 0, UINT64_MAX) + INT64_MAX;
+}
+RT_EXPORT_SYMBOL(RTRandAdvS64);
+
+
+RTDECL(uint64_t) RTRandAdvU64Ex(RTRAND hRand, uint64_t u64First, uint64_t u64Last) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, UINT64_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, UINT64_MAX);
+
+    /* forward the call */
+    return pThis->pfnGetU64(pThis, u64First, u64Last);
+}
+RT_EXPORT_SYMBOL(RTRandAdvU64Ex);
+
+
+RTDECL(uint64_t) RTRandAdvU64(RTRAND hRand) RT_NO_THROW_DEF
+{
+    /* Validate. */
+    PRTRANDINT pThis = hRand;
+    AssertPtrReturn(pThis, UINT64_MAX);
+    AssertReturn(pThis->u32Magic == RTRANDINT_MAGIC, UINT64_MAX);
+
+    /* forward the call */
+    return pThis->pfnGetU64(pThis, 0, UINT64_MAX);
+}
+RT_EXPORT_SYMBOL(RTRandAdvU64);
+
+
+DECLHIDDEN(DECLCALLBACK(void))  rtRandAdvSynthesizeBytesFromU32(PRTRANDINT pThis, uint8_t *pb, size_t cb)
+{
+    while (cb > 0)
+    {
+        uint32_t u32 = pThis->pfnGetU32(pThis, 0, UINT32_MAX);
+        switch (cb)
+        {
+            case 4:
+                pb[3] = (uint8_t)(u32 >> 24); RT_FALL_THRU();
+            case 3:
+                pb[2] = (uint8_t)(u32 >> 16); RT_FALL_THRU();
+            case 2:
+                pb[1] = (uint8_t)(u32 >> 8);  RT_FALL_THRU();
+            case 1:
+                pb[0] = (uint8_t)u32;
+            return; /* done */
+
+            default:
+                pb[0] = (uint8_t)u32;
+                pb[1] = (uint8_t)(u32 >> 8);
+                pb[2] = (uint8_t)(u32 >> 16);
+                pb[3] = (uint8_t)(u32 >> 24);
+                break;
+        }
+
+        /* advance */
+        cb -= 4;
+        pb += 4;
+    }
+}
+
+
+DECLHIDDEN(DECLCALLBACK(void))  rtRandAdvSynthesizeBytesFromU64(PRTRANDINT pThis, uint8_t *pb, size_t cb)
+{
+    while (cb > 0)
+    {
+        uint64_t u64 = pThis->pfnGetU64(pThis, 0, UINT64_MAX);
+        switch (cb)
+        {
+            case 8:
+                pb[7] = (uint8_t)(u64 >> 56); RT_FALL_THRU();
+            case 7:
+                pb[6] = (uint8_t)(u64 >> 48); RT_FALL_THRU();
+            case 6:
+                pb[5] = (uint8_t)(u64 >> 40); RT_FALL_THRU();
+            case 5:
+                pb[4] = (uint8_t)(u64 >> 32); RT_FALL_THRU();
+            case 4:
+                pb[3] = (uint8_t)(u64 >> 24); RT_FALL_THRU();
+            case 3:
+                pb[2] = (uint8_t)(u64 >> 16); RT_FALL_THRU();
+            case 2:
+                pb[1] = (uint8_t)(u64 >> 8);  RT_FALL_THRU();
+            case 1:
+                pb[0] = (uint8_t)u64;
+            return; /* done */
+
+            default:
+                pb[0] = (uint8_t)u64;
+                pb[1] = (uint8_t)(u64 >> 8);
+                pb[2] = (uint8_t)(u64 >> 16);
+                pb[3] = (uint8_t)(u64 >> 24);
+                pb[4] = (uint8_t)(u64 >> 32);
+                pb[5] = (uint8_t)(u64 >> 40);
+                pb[6] = (uint8_t)(u64 >> 48);
+                pb[7] = (uint8_t)(u64 >> 56);
+                break;
+        }
+
+        /* advance */
+        cb -= 8;
+        pb += 8;
+    }
+}
+
+
+DECLHIDDEN(DECLCALLBACK(uint32_t))  rtRandAdvSynthesizeU32FromBytes(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last)
+{
+    union
+    {
+        uint32_t    off;
+        uint8_t     ab[5];
+    } u;
+
+    const uint32_t offLast = u32Last - u32First;
+    if (offLast == UINT32_MAX)
+        /* get 4 random bytes and return them raw. */
+        pThis->pfnGetBytes(pThis, &u.ab[0], sizeof(u.off));
+    else if (!(offLast & UINT32_C(0xf0000000)))
+    {
+        /* get 4 random bytes and do simple squeeze. */
+        pThis->pfnGetBytes(pThis, &u.ab[0], sizeof(u.off));
+        u.off %= offLast + 1;
+        u.off += u32First;
+    }
+    else
+    {
+        /* get 5 random bytes and do shifted squeeze. (this ain't perfect) */
+        pThis->pfnGetBytes(pThis, &u.ab[0], sizeof(u.ab));
+        u.off %= (offLast >> 4) + 1;
+        u.off <<= 4;
+        u.off |= u.ab[4] & 0xf;
+        if (u.off > offLast)
+            u.off = offLast;
+        u.off += u32First;
+    }
+    return u.off;
+}
+
+
+DECLHIDDEN(DECLCALLBACK(uint32_t))  rtRandAdvSynthesizeU32FromU64(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last)
+{
+    return (uint32_t)pThis->pfnGetU64(pThis, u32First, u32Last);
+}
+
+
+DECLHIDDEN(DECLCALLBACK(uint64_t))  rtRandAdvSynthesizeU64FromBytes(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last)
+{
+    union
+    {
+        uint64_t    off;
+        uint32_t    off32;
+        uint8_t     ab[9];
+    } u;
+
+    const uint64_t offLast = u64Last - u64First;
+    if (offLast == UINT64_MAX)
+        /* get 8 random bytes and return them raw. */
+        pThis->pfnGetBytes(pThis, &u.ab[0], sizeof(u.off));
+    else if (!(offLast & UINT64_C(0xf000000000000000)))
+    {
+        /* get 8 random bytes and do simple squeeze. */
+        pThis->pfnGetBytes(pThis, &u.ab[0], sizeof(u.off));
+        u.off %= offLast + 1;
+        u.off += u64First;
+    }
+    else
+    {
+        /* get 9 random bytes and do shifted squeeze. (this ain't perfect) */
+        pThis->pfnGetBytes(pThis, &u.ab[0], sizeof(u.ab));
+        u.off %= (offLast >> 4) + 1;
+        u.off <<= 4;
+        u.off |= u.ab[8] & 0xf;
+        if (u.off > offLast)
+            u.off = offLast;
+        u.off += u64First;
+    }
+    return u.off;
+}
+
+
+DECLHIDDEN(DECLCALLBACK(uint64_t))  rtRandAdvSynthesizeU64FromU32(PRTRANDINT pThis, uint64_t u64First, uint64_t u64Last)
+{
+    uint64_t off = u64Last - u64First;
+    if (off <= UINT32_MAX)
+        return (uint64_t)pThis->pfnGetU32(pThis, 0, (uint32_t)off) + u64First;
+
+    return (    (uint64_t)pThis->pfnGetU32(pThis, 0, UINT32_MAX)
+            |  ((uint64_t)pThis->pfnGetU32(pThis, 0, (uint32_t)(off >> 32)) << 32))
+         + u64First;
+}
+
+
+/** @copydoc RTRANDINT::pfnSeed */
+DECLHIDDEN(DECLCALLBACK(int)) rtRandAdvStubSeed(PRTRANDINT pThis, uint64_t u64Seed)
+{
+    NOREF(pThis);
+    NOREF(u64Seed);
+    return VERR_NOT_SUPPORTED;
+}
+
+
+/** @copydoc RTRANDINT::pfnSaveState */
+DECLHIDDEN(DECLCALLBACK(int)) rtRandAdvStubSaveState(PRTRANDINT pThis, char *pszState, size_t *pcbState)
+{
+    NOREF(pThis);
+    NOREF(pszState);
+    NOREF(pcbState);
+    return VERR_NOT_SUPPORTED;
+}
+
+
+/** @copydoc RTRANDINT::pfnRestoreState */
+DECLHIDDEN(DECLCALLBACK(int)) rtRandAdvStubRestoreState(PRTRANDINT pThis, char const *pszState)
+{
+    NOREF(pThis);
+    NOREF(pszState);
+    return VERR_NOT_SUPPORTED;
+}
+
+
+/** @copydoc RTRANDINT::pfnDestroy */
+DECLHIDDEN(DECLCALLBACK(int)) rtRandAdvDefaultDestroy(PRTRANDINT pThis)
+{
+    pThis->u32Magic = ~RTRANDINT_MAGIC;
+    RTMemFree(pThis);
+    return VINF_SUCCESS;
+}
+
diff --git a/src/VBox/Runtime/common/rand/randparkmiller.cpp b/src/VBox/Runtime/common/rand/randparkmiller.cpp
new file mode 100644
index 00000000..538e8748
--- /dev/null
+++ b/src/VBox/Runtime/common/rand/randparkmiller.cpp
@@ -0,0 +1,210 @@
+/* $Id: randparkmiller.cpp $ */
+/** @file
+ * IPRT - Random Numbers, Park-Miller Pseudo Random.
+ */
+
+/*
+ * Copyright (C) 2008-2020 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.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/rand.h>
+#include "internal/iprt.h"
+
+#include <iprt/asm-math.h>
+#include <iprt/mem.h>
+#include <iprt/string.h>
+#include <iprt/errcore.h>
+#include "internal/rand.h"
+#include "internal/magics.h"
+
+
+
+DECLINLINE(uint32_t) rtRandParkMillerU31(uint32_t *pu32Ctx)
+{
+    /*
+     * Park-Miller random number generator:
+     *      X2 = X1 * g mod n.
+     *
+     * We use the constants suggested by Park and Miller:
+     *      n = 2^31 - 1 = INT32_MAX
+     *      g = 7^5 = 16807
+     *
+     * This will produce numbers in the range [0..INT32_MAX-1], which is
+     * almost 31-bits. We'll ignore the missing number for now and settle
+     * for just filling in the missing bit instead (the caller does this).
+     */
+    uint32_t x1 = *pu32Ctx;
+    if (!x1)
+        x1 = 20080806;
+    /*uint32_t x2 = ((uint64_t)x1 * 16807) % INT32_MAX;*/
+    uint32_t x2 = ASMModU64ByU32RetU32(ASMMult2xU32RetU64(x1, 16807), INT32_MAX);
+    return *pu32Ctx = x2;
+}
+
+
+/** @copydoc RTRANDINT::pfnGetU32 */
+static DECLCALLBACK(uint32_t) rtRandParkMillerGetU32(PRTRANDINT pThis, uint32_t u32First, uint32_t u32Last)
+{
+    uint32_t off;
+    uint32_t offLast = u32Last - u32First;
+    if (offLast == UINT32_MAX)
+    {
+        /* 30 + 2 bit (make up for the missing INT32_MAX value) */
+        off = rtRandParkMillerU31(&pThis->u.ParkMiller.u32Ctx);
+        if (pThis->u.ParkMiller.cBits < 2)
+        {
+            pThis->u.ParkMiller.u32Bits = rtRandParkMillerU31(&pThis->u.ParkMiller.u32Ctx);
+            pThis->u.ParkMiller.cBits = 30;
+        }
+        off >>= 1;
+        off |= (pThis->u.ParkMiller.u32Bits & 3) << 30;
+        pThis->u.ParkMiller.u32Bits >>= 2;
+        pThis->u.ParkMiller.cBits -= 2;
+    }
+    else if (offLast == (uint32_t)INT32_MAX - 1)
+        /* The exact range. */
+        off = rtRandParkMillerU31(&pThis->u.ParkMiller.u32Ctx);
+    else if (offLast < UINT32_C(0x07ffffff))
+    {
+        /* Requested 23 or fewer bits, just lose the lower bit. */
+        off = rtRandParkMillerU31(&pThis->u.ParkMiller.u32Ctx);
+        off >>= 1;
+        off %= (offLast + 1);
+    }
+    else
+    {
+        /*
+         * 30 + 6 bits.
+         */
+        uint64_t off64 = rtRandParkMillerU31(&pThis->u.ParkMiller.u32Ctx);
+        if (pThis->u.ParkMiller.cBits < 6)
+        {
+            pThis->u.ParkMiller.u32Bits = rtRandParkMillerU31(&pThis->u.ParkMiller.u32Ctx);
+            pThis->u.ParkMiller.cBits = 30;
+        }
+        off64 >>= 1;
+        off64 |= (uint64_t)(pThis->u.ParkMiller.u32Bits & 0x3f) << 30;
+        pThis->u.ParkMiller.u32Bits >>= 6;
+        pThis->u.ParkMiller.cBits -= 6;
+        off = ASMModU64ByU32RetU32(off64, offLast + 1);
+    }
+    return off + u32First;
+}
+
+
+/** @copydoc RTRANDINT::pfnSeed */
+static DECLCALLBACK(int) rtRandParkMillerSeed(PRTRANDINT pThis, uint64_t u64Seed)
+{
+    pThis->u.ParkMiller.u32Ctx = (uint32_t)u64Seed;
+    pThis->u.ParkMiller.u32Bits = 0;
+    pThis->u.ParkMiller.cBits = 0;
+    return VINF_SUCCESS;
+}
+
+
+/** @copydoc RTRANDINT::pfnSaveState */
+static DECLCALLBACK(int) rtRandParkMillerSaveState(PRTRANDINT pThis, char *pszState, size_t *pcbState)
+{
+#define RTRAND_PARKMILLER_STATE_SIZE (3+8+1+8+1+2+1+1)
+
+    if (*pcbState < RTRAND_PARKMILLER_STATE_SIZE)
+    {
+        *pcbState = RTRAND_PARKMILLER_STATE_SIZE;
+        return VERR_BUFFER_OVERFLOW;
+    }
+    RTStrPrintf(pszState, *pcbState, "PM:%08RX32,%08RX32,%02x;",
+                pThis->u.ParkMiller.u32Ctx,
+                pThis->u.ParkMiller.u32Bits,
+                pThis->u.ParkMiller.cBits);
+    return VINF_SUCCESS;
+}
+
+
+/** @copydoc RTRANDINT::pfnRestoreState */
+static DECLCALLBACK(int) rtRandParkMillerRestoreState(PRTRANDINT pThis, char const *pszState)
+{
+    /* marker */
+    if (    pszState[0] != 'P'
+        ||  pszState[1] != 'M'
+        ||  pszState[2] != ':')
+        return VERR_PARSE_ERROR;
+    pszState += 3;
+
+    /* u32Ctx */
+    char *pszNext = NULL;
+    uint32_t u32Ctx;
+    int rc = RTStrToUInt32Ex(pszState, &pszNext, 16, &u32Ctx);
+    if (    rc != VWRN_TRAILING_CHARS
+        ||  pszNext !=  pszState + 8
+        ||  *pszNext != ',')
+        return VERR_PARSE_ERROR;
+    pszState += 8 + 1;
+
+    /* u32Bits */
+    uint32_t u32Bits;
+    rc = RTStrToUInt32Ex(pszState, &pszNext, 16, &u32Bits);
+    if (    rc != VWRN_TRAILING_CHARS
+        ||  pszNext !=  pszState + 8
+        ||  *pszNext != ',')
+        return VERR_PARSE_ERROR;
+    pszState += 8 + 1;
+
+    /* cBits */
+    uint32_t cBits;
+    rc = RTStrToUInt32Ex(pszState, &pszNext, 16, &cBits);
+    if (    rc != VWRN_TRAILING_CHARS
+        ||  pszNext !=  pszState + 2
+        ||  *pszNext != ';'
+        ||  pszNext[1] != '\0')
+        return VERR_PARSE_ERROR;
+
+    /* commit */
+    pThis->u.ParkMiller.u32Ctx  = u32Ctx;
+    pThis->u.ParkMiller.u32Bits = u32Bits;
+    pThis->u.ParkMiller.cBits   = cBits;
+    return VINF_SUCCESS;
+}
+
+
+RTDECL(int) RTRandAdvCreateParkMiller(PRTRAND phRand) RT_NO_THROW_DEF
+{
+    PRTRANDINT pThis = (PRTRANDINT)RTMemAlloc(sizeof(*pThis));
+    if (!pThis)
+        return VERR_NO_MEMORY;
+    pThis->u32Magic = RTRANDINT_MAGIC;
+    pThis->pfnGetBytes= rtRandAdvSynthesizeBytesFromU32;
+    pThis->pfnGetU32  = rtRandParkMillerGetU32;
+    pThis->pfnGetU64  = rtRandAdvSynthesizeU64FromU32;
+    pThis->pfnSeed    = rtRandParkMillerSeed;
+    pThis->pfnSaveState = rtRandParkMillerSaveState;
+    pThis->pfnRestoreState = rtRandParkMillerRestoreState;
+    pThis->pfnDestroy = rtRandAdvDefaultDestroy;
+    pThis->u.ParkMiller.u32Ctx = 0x20080806;
+    pThis->u.ParkMiller.u32Bits = 0;
+    pThis->u.ParkMiller.cBits = 0;
+    *phRand = pThis;
+    return VINF_SUCCESS;
+}
+RT_EXPORT_SYMBOL(RTRandAdvCreateParkMiller);
+