-/* crypto/rand/rand_win.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include "internal/cryptlib.h"
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
# include <windows.h>
-# ifndef _WIN32_WINNT
-# define _WIN32_WINNT 0x0400
+/* On Windows 7 or higher use BCrypt instead of the legacy CryptoAPI */
+# if defined(_MSC_VER) && defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0601
+# define USE_BCRYPT 1
# endif
-# include <wincrypt.h>
-# include <tlhelp32.h>
-
-/*
- * Limit the time spent walking through the heap, processes, threads and
- * modules to a maximum of 1000 miliseconds each, unless CryptoGenRandom
- * failed
- */
-# define MAXDELAY 1000
+# ifdef USE_BCRYPT
+# include <bcrypt.h>
+# pragma comment(lib, "bcrypt.lib")
+# else
+# include <wincrypt.h>
/*
* Intel hardware RNG CSP -- available from
* http://developer.intel.com/design/security/rng/redist_license.htm
*/
-# define PROV_INTEL_SEC 22
-# define INTEL_DEF_PROV L"Intel Hardware Cryptographic Service Provider"
+# define PROV_INTEL_SEC 22
+# define INTEL_DEF_PROV L"Intel Hardware Cryptographic Service Provider"
+# endif
static void readtimer(void);
-static void readscreen(void);
-
-/*
- * It appears like CURSORINFO, PCURSORINFO and LPCURSORINFO are only defined
- * when WINVER is 0x0500 and up, which currently only happens on Win2000.
- * Unfortunately, those are typedefs, so they're a little bit difficult to
- * detect properly. On the other hand, the macro CURSOR_SHOWING is defined
- * within the same conditional, so it can be use to detect the absence of
- * said typedefs.
- */
-
-# ifndef CURSOR_SHOWING
-/*
- * Information about the global cursor.
- */
-typedef struct tagCURSORINFO {
- DWORD cbSize;
- DWORD flags;
- HCURSOR hCursor;
- POINT ptScreenPos;
-} CURSORINFO, *PCURSORINFO, *LPCURSORINFO;
-
-# define CURSOR_SHOWING 0x00000001
-# endif /* CURSOR_SHOWING */
-
-# if !defined(OPENSSL_SYS_WINCE)
-typedef BOOL(WINAPI *CRYPTACQUIRECONTEXTW) (HCRYPTPROV *, LPCWSTR, LPCWSTR,
- DWORD, DWORD);
-typedef BOOL(WINAPI *CRYPTGENRANDOM) (HCRYPTPROV, DWORD, BYTE *);
-typedef BOOL(WINAPI *CRYPTRELEASECONTEXT) (HCRYPTPROV, DWORD);
-
-typedef HWND(WINAPI *GETFOREGROUNDWINDOW) (VOID);
-typedef BOOL(WINAPI *GETCURSORINFO) (PCURSORINFO);
-typedef DWORD(WINAPI *GETQUEUESTATUS) (UINT);
-
-typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
-typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
-typedef BOOL(WINAPI *HEAP32FIRST) (LPHEAPENTRY32, DWORD, size_t);
-typedef BOOL(WINAPI *HEAP32NEXT) (LPHEAPENTRY32);
-typedef BOOL(WINAPI *HEAP32LIST) (HANDLE, LPHEAPLIST32);
-typedef BOOL(WINAPI *PROCESS32) (HANDLE, LPPROCESSENTRY32);
-typedef BOOL(WINAPI *THREAD32) (HANDLE, LPTHREADENTRY32);
-typedef BOOL(WINAPI *MODULE32) (HANDLE, LPMODULEENTRY32);
-
-# include <lmcons.h>
-# include <lmstats.h>
-/*
- * The NET API is Unicode only. It requires the use of the UNICODE macro.
- * When UNICODE is defined LPTSTR becomes LPWSTR. LMSTR was was added to the
- * Platform SDK to allow the NET API to be used in non-Unicode applications
- * provided that Unicode strings were still used for input. LMSTR is defined
- * as LPWSTR.
- */
-typedef NET_API_STATUS(NET_API_FUNCTION *NETSTATGET)
- (LPWSTR, LPWSTR, DWORD, DWORD, LPBYTE *);
-typedef NET_API_STATUS(NET_API_FUNCTION *NETFREE) (LPBYTE);
-# endif /* !OPENSSL_SYS_WINCE */
int RAND_poll(void)
{
MEMORYSTATUS mst;
+# ifndef USE_BCRYPT
HCRYPTPROV hProvider = 0;
+# endif
DWORD w;
- int good = 0;
+ BYTE buf[64];
-# if defined(OPENSSL_SYS_WINCE)
-# if defined(_WIN32_WCE) && _WIN32_WCE>=300
- /*
- * Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available
- * in commonly available implementations prior 300...
- */
- {
- BYTE buf[64];
- /* poll the CryptoAPI PRNG */
- /* The CryptoAPI returns sizeof(buf) bytes of randomness */
- if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL,
- CRYPT_VERIFYCONTEXT)) {
- if (CryptGenRandom(hProvider, sizeof(buf), buf))
- RAND_add(buf, sizeof(buf), sizeof(buf));
- CryptReleaseContext(hProvider, 0);
- }
+# ifdef USE_BCRYPT
+ if (BCryptGenRandom(NULL, buf, (ULONG)sizeof(buf), BCRYPT_USE_SYSTEM_PREFERRED_RNG) == 0) {
+ RAND_add(buf, sizeof(buf), sizeof(buf));
}
-# endif
-# else /* OPENSSL_SYS_WINCE */
- /*
- * None of below libraries are present on Windows CE, which is
- * why we #ifndef the whole section. This also excuses us from
- * handling the GetProcAddress issue. The trouble is that in
- * real Win32 API GetProcAddress is available in ANSI flavor
- * only. In WinCE on the other hand GetProcAddress is a macro
- * most commonly defined as GetProcAddressW, which accepts
- * Unicode argument. If we were to call GetProcAddress under
- * WinCE, I'd recommend to either redefine GetProcAddress as
- * GetProcAddressA (there seem to be one in common CE spec) or
- * implement own shim routine, which would accept ANSI argument
- * and expand it to Unicode.
- */
- {
- /* load functions dynamically - not available on all systems */
- HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL"));
- HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL"));
- HMODULE user = NULL;
- HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL"));
- CRYPTACQUIRECONTEXTW acquire = NULL;
- CRYPTGENRANDOM gen = NULL;
- CRYPTRELEASECONTEXT release = NULL;
- NETSTATGET netstatget = NULL;
- NETFREE netfree = NULL;
- BYTE buf[64];
-
- if (netapi) {
- netstatget =
- (NETSTATGET) GetProcAddress(netapi, "NetStatisticsGet");
- netfree = (NETFREE) GetProcAddress(netapi, "NetApiBufferFree");
- }
-
- if (netstatget && netfree) {
- LPBYTE outbuf;
- /*
- * NetStatisticsGet() is a Unicode only function
- * STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0
- * contains 17 fields. We treat each field as a source of one
- * byte of entropy.
- */
-
- if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0) {
- RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45);
- netfree(outbuf);
- }
- if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0) {
- RAND_add(outbuf, sizeof(STAT_SERVER_0), 17);
- netfree(outbuf);
- }
- }
-
- if (netapi)
- FreeLibrary(netapi);
-
- /*
- * It appears like this can cause an exception deep within
- * ADVAPI32.DLL at random times on Windows 2000. Reported by Jeffrey
- * Altman. Only use it on NT.
- */
-
- if (advapi) {
- /*
- * If it's available, then it's available in both ANSI
- * and UNICODE flavors even in Win9x, documentation says.
- * We favor Unicode...
- */
- acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi,
- "CryptAcquireContextW");
- gen = (CRYPTGENRANDOM) GetProcAddress(advapi, "CryptGenRandom");
- release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi,
- "CryptReleaseContext");
- }
-
- if (acquire && gen && release) {
- /* poll the CryptoAPI PRNG */
- /* The CryptoAPI returns sizeof(buf) bytes of randomness */
- if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL,
- CRYPT_VERIFYCONTEXT)) {
- if (gen(hProvider, sizeof(buf), buf) != 0) {
- RAND_add(buf, sizeof(buf), 0);
- good = 1;
- }
- release(hProvider, 0);
- }
-
- /* poll the Pentium PRG with CryptoAPI */
- if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0)) {
- if (gen(hProvider, sizeof(buf), buf) != 0) {
- RAND_add(buf, sizeof(buf), sizeof(buf));
- good = 1;
- }
- release(hProvider, 0);
- }
- }
-
- if (advapi)
- FreeLibrary(advapi);
-
- if ((!check_winnt() ||
- !OPENSSL_isservice()) &&
- (user = LoadLibrary(TEXT("USER32.DLL")))) {
- GETCURSORINFO cursor;
- GETFOREGROUNDWINDOW win;
- GETQUEUESTATUS queue;
-
- win =
- (GETFOREGROUNDWINDOW) GetProcAddress(user,
- "GetForegroundWindow");
- cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo");
- queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus");
-
- if (win) {
- /* window handle */
- HWND h = win();
- RAND_add(&h, sizeof(h), 0);
- }
- if (cursor) {
- /*
- * unfortunately, its not safe to call GetCursorInfo() on NT4
- * even though it exists in SP3 (or SP6) and higher.
- */
- if (check_winnt() && !check_win_minplat(5))
- cursor = 0;
- }
- if (cursor) {
- /* cursor position */
- /* assume 2 bytes of entropy */
- CURSORINFO ci;
- ci.cbSize = sizeof(CURSORINFO);
- if (cursor(&ci))
- RAND_add(&ci, ci.cbSize, 2);
- }
-
- if (queue) {
- /* message queue status */
- /* assume 1 byte of entropy */
- w = queue(QS_ALLEVENTS);
- RAND_add(&w, sizeof(w), 1);
- }
-
- FreeLibrary(user);
+# else
+ /* poll the CryptoAPI PRNG */
+ /* The CryptoAPI returns sizeof(buf) bytes of randomness */
+ if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
+ if (CryptGenRandom(hProvider, sizeof(buf), buf) != 0) {
+ RAND_add(buf, sizeof(buf), sizeof(buf));
}
+ CryptReleaseContext(hProvider, 0);
+ }
- /*-
- * Toolhelp32 snapshot: enumerate processes, threads, modules and heap
- * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm
- * (Win 9x and 2000 only, not available on NT)
- *
- * This seeding method was proposed in Peter Gutmann, Software
- * Generation of Practically Strong Random Numbers,
- * http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html
- * revised version at http://www.cryptoengines.com/~peter/06_random.pdf
- * (The assignment of entropy estimates below is arbitrary, but based
- * on Peter's analysis the full poll appears to be safe. Additional
- * interactive seeding is encouraged.)
- */
-
- if (kernel) {
- CREATETOOLHELP32SNAPSHOT snap;
- CLOSETOOLHELP32SNAPSHOT close_snap;
- HANDLE handle;
-
- HEAP32FIRST heap_first;
- HEAP32NEXT heap_next;
- HEAP32LIST heaplist_first, heaplist_next;
- PROCESS32 process_first, process_next;
- THREAD32 thread_first, thread_next;
- MODULE32 module_first, module_next;
-
- HEAPLIST32 hlist;
- HEAPENTRY32 hentry;
- PROCESSENTRY32 p;
- THREADENTRY32 t;
- MODULEENTRY32 m;
- DWORD starttime = 0;
-
- snap = (CREATETOOLHELP32SNAPSHOT)
- GetProcAddress(kernel, "CreateToolhelp32Snapshot");
- close_snap = (CLOSETOOLHELP32SNAPSHOT)
- GetProcAddress(kernel, "CloseToolhelp32Snapshot");
- heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First");
- heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next");
- heaplist_first =
- (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst");
- heaplist_next =
- (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext");
- process_first =
- (PROCESS32) GetProcAddress(kernel, "Process32First");
- process_next =
- (PROCESS32) GetProcAddress(kernel, "Process32Next");
- thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First");
- thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next");
- module_first = (MODULE32) GetProcAddress(kernel, "Module32First");
- module_next = (MODULE32) GetProcAddress(kernel, "Module32Next");
-
- if (snap && heap_first && heap_next && heaplist_first &&
- heaplist_next && process_first && process_next &&
- thread_first && thread_next && module_first &&
- module_next && (handle = snap(TH32CS_SNAPALL, 0))
- != INVALID_HANDLE_VALUE) {
- /* heap list and heap walking */
- /*
- * HEAPLIST32 contains 3 fields that will change with each
- * entry. Consider each field a source of 1 byte of entropy.
- * HEAPENTRY32 contains 5 fields that will change with each
- * entry. Consider each field a source of 1 byte of entropy.
- */
- ZeroMemory(&hlist, sizeof(HEAPLIST32));
- hlist.dwSize = sizeof(HEAPLIST32);
- if (good)
- starttime = GetTickCount();
-# ifdef _MSC_VER
- if (heaplist_first(handle, &hlist)) {
- /*
- * following discussion on dev ML, exception on WinCE (or
- * other Win platform) is theoretically of unknown
- * origin; prevent infinite loop here when this
- * theoretical case occurs; otherwise cope with the
- * expected (MSDN documented) exception-throwing
- * behaviour of Heap32Next() on WinCE.
- *
- * based on patch in original message by Tanguy Fautré
- * (2009/03/02) Subject: RAND_poll() and
- * CreateToolhelp32Snapshot() stability
- */
- int ex_cnt_limit = 42;
- do {
- RAND_add(&hlist, hlist.dwSize, 3);
- __try {
- ZeroMemory(&hentry, sizeof(HEAPENTRY32));
- hentry.dwSize = sizeof(HEAPENTRY32);
- if (heap_first(&hentry,
- hlist.th32ProcessID,
- hlist.th32HeapID)) {
- int entrycnt = 80;
- do
- RAND_add(&hentry, hentry.dwSize, 5);
- while (heap_next(&hentry)
- && (!good
- || (GetTickCount() - starttime) <
- MAXDELAY)
- && --entrycnt > 0);
- }
- }
- __except(EXCEPTION_EXECUTE_HANDLER) {
- /*
- * ignore access violations when walking the heap
- * list
- */
- ex_cnt_limit--;
- }
- } while (heaplist_next(handle, &hlist)
- && (!good
- || (GetTickCount() - starttime) < MAXDELAY)
- && ex_cnt_limit > 0);
- }
-# else
- if (heaplist_first(handle, &hlist)) {
- do {
- RAND_add(&hlist, hlist.dwSize, 3);
- hentry.dwSize = sizeof(HEAPENTRY32);
- if (heap_first(&hentry,
- hlist.th32ProcessID,
- hlist.th32HeapID)) {
- int entrycnt = 80;
- do
- RAND_add(&hentry, hentry.dwSize, 5);
- while (heap_next(&hentry)
- && --entrycnt > 0);
- }
- } while (heaplist_next(handle, &hlist)
- && (!good
- || (GetTickCount() - starttime) < MAXDELAY));
- }
-# endif
-
- /* process walking */
- /*
- * PROCESSENTRY32 contains 9 fields that will change with
- * each entry. Consider each field a source of 1 byte of
- * entropy.
- */
- p.dwSize = sizeof(PROCESSENTRY32);
-
- if (good)
- starttime = GetTickCount();
- if (process_first(handle, &p))
- do
- RAND_add(&p, p.dwSize, 9);
- while (process_next(handle, &p)
- && (!good
- || (GetTickCount() - starttime) < MAXDELAY));
-
- /* thread walking */
- /*
- * THREADENTRY32 contains 6 fields that will change with each
- * entry. Consider each field a source of 1 byte of entropy.
- */
- t.dwSize = sizeof(THREADENTRY32);
- if (good)
- starttime = GetTickCount();
- if (thread_first(handle, &t))
- do
- RAND_add(&t, t.dwSize, 6);
- while (thread_next(handle, &t)
- && (!good
- || (GetTickCount() - starttime) < MAXDELAY));
-
- /* module walking */
- /*
- * MODULEENTRY32 contains 9 fields that will change with each
- * entry. Consider each field a source of 1 byte of entropy.
- */
- m.dwSize = sizeof(MODULEENTRY32);
- if (good)
- starttime = GetTickCount();
- if (module_first(handle, &m))
- do
- RAND_add(&m, m.dwSize, 9);
- while (module_next(handle, &m)
- && (!good
- || (GetTickCount() - starttime) < MAXDELAY));
- if (close_snap)
- close_snap(handle);
- else
- CloseHandle(handle);
-
- }
-
- FreeLibrary(kernel);
+ /* poll the Pentium PRG with CryptoAPI */
+ if (CryptAcquireContextW(&hProvider, NULL, INTEL_DEF_PROV, PROV_INTEL_SEC, CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
+ if (CryptGenRandom(hProvider, sizeof(buf), buf) != 0) {
+ RAND_add(buf, sizeof(buf), sizeof(buf));
}
+ CryptReleaseContext(hProvider, 0);
}
-# endif /* !OPENSSL_SYS_WINCE */
+# endif
/* timer data */
readtimer();
return (1);
}
+#if OPENSSL_API_COMPAT < 0x00101000L
int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam)
{
- double add_entropy = 0;
-
- switch (iMsg) {
- case WM_KEYDOWN:
- {
- static WPARAM key;
- if (key != wParam)
- add_entropy = 0.05;
- key = wParam;
- }
- break;
- case WM_MOUSEMOVE:
- {
- static int lastx, lasty, lastdx, lastdy;
- int x, y, dx, dy;
-
- x = LOWORD(lParam);
- y = HIWORD(lParam);
- dx = lastx - x;
- dy = lasty - y;
- if (dx != 0 && dy != 0 && dx - lastdx != 0 && dy - lastdy != 0)
- add_entropy = .2;
- lastx = x, lasty = y;
- lastdx = dx, lastdy = dy;
- }
- break;
- }
-
- readtimer();
- RAND_add(&iMsg, sizeof(iMsg), add_entropy);
- RAND_add(&wParam, sizeof(wParam), 0);
- RAND_add(&lParam, sizeof(lParam), 0);
-
- return (RAND_status());
+ RAND_poll();
+ return RAND_status();
}
void RAND_screen(void)
-{ /* function available for backward
- * compatibility */
+{
RAND_poll();
- readscreen();
}
+#endif
/* feed timing information to the PRNG */
static void readtimer(void)
}
}
-/* feed screen contents to PRNG */
-/*****************************************************************************
- *
- * Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V.
- *
- * Code adapted from
- * <URL:http://support.microsoft.com/default.aspx?scid=kb;[LN];97193>;
- * the original copyright message is:
- *
- * (C) Copyright Microsoft Corp. 1993. All rights reserved.
- *
- * You have a royalty-free right to use, modify, reproduce and
- * distribute the Sample Files (and/or any modified version) in
- * any way you find useful, provided that you agree that
- * Microsoft has no warranty obligations or liability for any
- * Sample Application Files which are modified.
- */
-
-static void readscreen(void)
-{
-# if !defined(OPENSSL_SYS_WINCE) && !defined(OPENSSL_SYS_WIN32_CYGWIN)
- HDC hScrDC; /* screen DC */
- HBITMAP hBitmap; /* handle for our bitmap */
- BITMAP bm; /* bitmap properties */
- unsigned int size; /* size of bitmap */
- char *bmbits; /* contents of bitmap */
- int w; /* screen width */
- int h; /* screen height */
- int y; /* y-coordinate of screen lines to grab */
- int n = 16; /* number of screen lines to grab at a time */
- BITMAPINFOHEADER bi; /* info about the bitmap */
-
- if (check_winnt() && OPENSSL_isservice() > 0)
- return;
-
- /* Get a reference to the screen DC */
- hScrDC = GetDC(NULL);
-
- /* Get screen resolution */
- w = GetDeviceCaps(hScrDC, HORZRES);
- h = GetDeviceCaps(hScrDC, VERTRES);
-
- /* Create a bitmap compatible with the screen DC */
- hBitmap = CreateCompatibleBitmap(hScrDC, w, n);
-
- /* Get bitmap properties */
- GetObject(hBitmap, sizeof(BITMAP), (LPSTR) & bm);
- size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes;
-
- bi.biSize = sizeof(BITMAPINFOHEADER);
- bi.biWidth = bm.bmWidth;
- bi.biHeight = bm.bmHeight;
- bi.biPlanes = bm.bmPlanes;
- bi.biBitCount = bm.bmBitsPixel;
- bi.biCompression = BI_RGB;
- bi.biSizeImage = 0;
- bi.biXPelsPerMeter = 0;
- bi.biYPelsPerMeter = 0;
- bi.biClrUsed = 0;
- bi.biClrImportant = 0;
-
- bmbits = OPENSSL_malloc(size);
- if (bmbits) {
- /* Now go through the whole screen, repeatedly grabbing n lines */
- for (y = 0; y < h - n; y += n) {
- unsigned char md[MD_DIGEST_LENGTH];
-
- /* Copy the bits of the current line range into the buffer */
- GetDIBits(hScrDC, hBitmap, y, n,
- bmbits, (BITMAPINFO *) & bi, DIB_RGB_COLORS);
-
- /* Get the hash of the bitmap */
- MD(bmbits, size, md);
-
- /* Seed the random generator with the hash value */
- RAND_add(md, MD_DIGEST_LENGTH, 0);
- }
-
- OPENSSL_free(bmbits);
- }
-
- /* Clean up */
- DeleteObject(hBitmap);
- ReleaseDC(NULL, hScrDC);
-# endif /* !OPENSSL_SYS_WINCE */
-}
-
#endif
projects / openssl.git / blobdiff