diff options
Diffstat (limited to 'openssl/crypto/rand/rand_win.c')
| -rw-r--r-- | openssl/crypto/rand/rand_win.c | 1227 |
1 files changed, 586 insertions, 641 deletions
diff --git a/openssl/crypto/rand/rand_win.c b/openssl/crypto/rand/rand_win.c index 34ffcd23f..06670ae01 100644 --- a/openssl/crypto/rand/rand_win.c +++ b/openssl/crypto/rand/rand_win.c @@ -5,21 +5,21 @@ * 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: @@ -34,10 +34,10 @@ * 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 + * 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 @@ -49,7 +49,7 @@ * 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 @@ -63,7 +63,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -114,607 +114,552 @@ #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> +# 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 +/* + * 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 +/* + * 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" 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. */ +/* + * 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 +# ifndef CURSOR_SHOWING /* * Information about the global cursor. */ -typedef struct tagCURSORINFO -{ - DWORD cbSize; - DWORD flags; +typedef struct tagCURSORINFO { + DWORD cbSize; + DWORD flags; HCURSOR hCursor; - POINT ptScreenPos; + 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 */ +# 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); - } - } + 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 ((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; + 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); + } } - 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; + __except(EXCEPTION_EXECUTE_HANDLER) { + /* + * ignore access violations when walking the heap + * list + */ + ex_cnt_limit--; } - break; - } - - readtimer(); - RAND_add(&iMsg, sizeof(iMsg), add_entropy); - RAND_add(&wParam, sizeof(wParam), 0); - RAND_add(&lParam, sizeof(lParam), 0); - - return (RAND_status()); - } + } 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); +} -void RAND_screen(void) /* function available for backward compatibility */ +int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam) { - RAND_poll(); - readscreen(); + 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 + 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); - } + 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 */ @@ -737,71 +682,71 @@ static void readtimer(void) 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 (check_winnt() && 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 */ +# 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 |