- MEMORYSTATUS m;
- HCRYPTPROV hProvider = 0;
- BYTE buf[64];
- DWORD w;
- HWND h;
-
- HMODULE advapi, kernel, user;
- CRYPTACQUIRECONTEXT acquire;
- CRYPTGENRANDOM gen;
- CRYPTRELEASECONTEXT release;
-
- /* load functions dynamically - not available on all systems */
- advapi = GetModuleHandle("ADVAPI32.DLL");
- kernel = GetModuleHandle("KERNEL32.DLL");
- user = GetModuleHandle("USER32.DLL");
-
- if (advapi)
- {
- acquire = (CRYPTACQUIRECONTEXT) GetProcAddress(advapi,
- "CryptAcquireContextA");
- gen = (CRYPTGENRANDOM) GetProcAddress(advapi,
- "CryptGenRandom");
- release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi,
- "CryptReleaseContext");
- }
-
- if (acquire && gen && release)
- {
- /* poll the CryptoAPI PRNG */
- if (acquire(&hProvider, 0, 0, PROV_RSA_FULL,
- CRYPT_VERIFYCONTEXT))
- {
- if (gen(hProvider, sizeof(buf), buf) != 0)
- {
- RAND_add(buf, sizeof(buf), 0);
-#ifdef DEBUG
- 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), 0);
-#ifdef DEBUG
- printf("randomness from PROV_INTEL_SEC\n");
-#endif
- }
- release(hProvider, 0);
- }
- }
-
- /* timer data */
- readtimer();
-
- /* memory usage statistics */
- GlobalMemoryStatus(&m);
- RAND_add(&m, sizeof(m), 1);
-
- /* process ID */
- w = GetCurrentProcessId();
- RAND_add(&w, sizeof(w), 0);
-
- if (user)
- {
- 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 */
- h = win();
- RAND_add(&h, sizeof(h), 0);
- }
-
- if (cursor)
- {
- /* cursor position */
- cursor((PCURSORINFO)buf);
- RAND_add(buf, sizeof(buf), 0);
- }
-
- if (queue)
- {
- /* message queue status */
- w = queue(QS_ALLEVENTS);
- RAND_add(&w, sizeof(w), 0);
- }
- }
-
- /* Toolhelp32 snapshot: enumerate processes, threads, modules and heap
- * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm
- * (Win 9x 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
- * (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;
- 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;
-
- snap = (CREATETOOLHELP32SNAPSHOT)
- GetProcAddress(kernel, "CreateToolhelp32Snapshot");
- 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))
- != NULL)
- {
- /* heap list and heap walking */
- hlist.dwSize = sizeof(HEAPLIST32);
- if (heaplist_first(handle, &hlist))
- do
- {
- RAND_add(&hlist, hlist.dwSize, 0);
- hentry.dwSize = sizeof(HEAPENTRY32);
- if (heap_first(&hentry,
- hlist.th32ProcessID,
- hlist.th32HeapID))
- {
- int entrycnt = 50;
- do
- RAND_add(&hentry,
- hentry.dwSize, 0);
- while (heap_next(&hentry)
- && --entrycnt > 0);
- }
- } while (heaplist_next(handle,
- &hlist));
-
- /* process walking */
- p.dwSize = sizeof(PROCESSENTRY32);
- if (process_first(handle, &p))
- do
- RAND_add(&p, p.dwSize, 0);
- while (process_next(handle, &p));
-
- /* thread walking */
- t.dwSize = sizeof(THREADENTRY32);
- if (thread_first(handle, &t))
- do
- RAND_add(&t, t.dwSize, 0);
- while (thread_next(handle, &t));
-
- /* module walking */
- m.dwSize = sizeof(MODULEENTRY32);
- if (module_first(handle, &m))
- do
- RAND_add(&m, m.dwSize, 1);
- while (module_next(handle, &m));
-
- CloseHandle(handle);
- }
- }
-
-#ifdef DEBUG
- 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;
+ MEMORYSTATUS m;
+ HCRYPTPROV hProvider = 0;
+ DWORD w;
+ int good = 0;
+
+# 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.
+ */
+
+ 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 ((!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);
+ }
+
+ /*-
+ * 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);
+ }