diff options
Diffstat (limited to 'openssl/crypto/rand/rand_win.c')
| -rw-r--r-- | openssl/crypto/rand/rand_win.c | 807 |
1 files changed, 0 insertions, 807 deletions
diff --git a/openssl/crypto/rand/rand_win.c b/openssl/crypto/rand/rand_win.c deleted file mode 100644 index 5d134e18..00000000 --- a/openssl/crypto/rand/rand_win.c +++ /dev/null @@ -1,807 +0,0 @@ -/* 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). - * - */ - -#include "cryptlib.h" -#include <openssl/rand.h> -#include "rand_lcl.h" - -#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32) -#include <windows.h> -#ifndef _WIN32_WINNT -# define _WIN32_WINNT 0x0400 -#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 - -/* 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" - -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> -#if 1 /* 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 /* 1 */ -#endif /* !OPENSSL_SYS_WINCE */ - -int RAND_poll(void) -{ - MEMORYSTATUS m; - HCRYPTPROV hProvider = 0; - DWORD w; - int good = 0; - - /* Determine the OS version we are on so we can turn off things - * that do not work properly. - */ - OSVERSIONINFO osverinfo ; - osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ; - GetVersionEx( &osverinfo ) ; - -#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); - } - } -# 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. - */ - /* Wolfgang Marczy <WMarczy@topcall.co.at> reports that - * the RegQueryValueEx call below can hang on NT4.0 (SP6). - * So we don't use this at all for now. */ -#if 0 - if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && - osverinfo.dwMajorVersion < 5) - { - /* Read Performance Statistics from NT/2000 registry - * The size of the performance data can vary from call - * to call so we must guess the size of the buffer to use - * and increase its size if we get an ERROR_MORE_DATA - * return instead of ERROR_SUCCESS. - */ - LONG rc=ERROR_MORE_DATA; - char * buf=NULL; - DWORD bufsz=0; - DWORD length; - - while (rc == ERROR_MORE_DATA) - { - buf = realloc(buf,bufsz+8192); - if (!buf) - break; - bufsz += 8192; - - length = bufsz; - rc = RegQueryValueEx(HKEY_PERFORMANCE_DATA, TEXT("Global"), - NULL, NULL, buf, &length); - } - if (rc == ERROR_SUCCESS) - { - /* For entropy count assume only least significant - * byte of each DWORD is random. - */ - RAND_add(&length, sizeof(length), 0); - RAND_add(buf, length, length / 4.0); - - /* Close the Registry Key to allow Windows to cleanup/close - * the open handle - * Note: The 'HKEY_PERFORMANCE_DATA' key is implicitly opened - * when the RegQueryValueEx above is done. However, if - * it is not explicitly closed, it can cause disk - * partition manipulation problems. - */ - RegCloseKey(HKEY_PERFORMANCE_DATA); - } - if (buf) - free(buf); - } -#endif - - 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; -#if 0 - printf("randomness from PROV_RSA_FULL\n"); -#endif - } - 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; -#if 0 - printf("randomness from PROV_INTEL_SEC\n"); -#endif - } - release(hProvider, 0); - } - } - - if (advapi) - FreeLibrary(advapi); - - if ((osverinfo.dwPlatformId != VER_PLATFORM_WIN32_NT || - !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 ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && - osverinfo.dwMajorVersion < 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); - } - - /* 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); - } - } -#endif /* !OPENSSL_SYS_WINCE */ - - /* timer data */ - readtimer(); - - /* memory usage statistics */ - GlobalMemoryStatus(&m); - RAND_add(&m, sizeof(m), 1); - - /* process ID */ - w = GetCurrentProcessId(); - RAND_add(&w, sizeof(w), 1); - -#if 0 - printf("Exiting RAND_poll\n"); -#endif - - return(1); -} - -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()); - } - - -void RAND_screen(void) /* function available for backward compatibility */ -{ - RAND_poll(); - readscreen(); -} - - -/* feed timing information to the PRNG */ -static void readtimer(void) -{ - DWORD w; - LARGE_INTEGER l; - static int have_perfc = 1; -#if defined(_MSC_VER) && defined(_M_X86) - static int have_tsc = 1; - DWORD cyclecount; - - if (have_tsc) { - __try { - __asm { - _emit 0x0f - _emit 0x31 - mov cyclecount, eax - } - RAND_add(&cyclecount, sizeof(cyclecount), 1); - } __except(EXCEPTION_EXECUTE_HANDLER) { - have_tsc = 0; - } - } -#else -# define have_tsc 0 -#endif - - if (have_perfc) { - if (QueryPerformanceCounter(&l) == 0) - have_perfc = 0; - else - RAND_add(&l, sizeof(l), 0); - } - - if (!have_tsc && !have_perfc) { - w = GetTickCount(); - RAND_add(&w, sizeof(w), 0); - } -} - -/* 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 */ - HDC hMemDC; /* memory DC */ - HBITMAP hBitmap; /* handle for our bitmap */ - HBITMAP hOldBitmap; /* handle for previous 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 */ - - if (GetVersion() < 0x80000000 && OPENSSL_isservice()>0) - return; - - /* Create a screen DC and a memory DC compatible to screen DC */ - hScrDC = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL); - hMemDC = CreateCompatibleDC(hScrDC); - - /* Get screen resolution */ - w = GetDeviceCaps(hScrDC, HORZRES); - h = GetDeviceCaps(hScrDC, VERTRES); - - /* Create a bitmap compatible with the screen DC */ - hBitmap = CreateCompatibleBitmap(hScrDC, w, n); - - /* Select new bitmap into memory DC */ - hOldBitmap = SelectObject(hMemDC, hBitmap); - - /* Get bitmap properties */ - GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm); - size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes; - - 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]; - - /* Bitblt screen DC to memory DC */ - BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY); - - /* Copy bitmap bits from memory DC to bmbits */ - GetBitmapBits(hBitmap, size, bmbits); - - /* 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); - } - - /* Select old bitmap back into memory DC */ - hBitmap = SelectObject(hMemDC, hOldBitmap); - - /* Clean up */ - DeleteObject(hBitmap); - DeleteDC(hMemDC); - DeleteDC(hScrDC); -#endif /* !OPENSSL_SYS_WINCE */ -} - -#endif |