2 /* crypto/rand/rand_win.c */
3 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
6 * This package is an SSL implementation written
7 * by Eric Young (eay@cryptsoft.com).
8 * The implementation was written so as to conform with Netscapes SSL.
10 * This library is free for commercial and non-commercial use as long as
11 * the following conditions are aheared to. The following conditions
12 * apply to all code found in this distribution, be it the RC4, RSA,
13 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
14 * included with this distribution is covered by the same copyright terms
15 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
17 * Copyright remains Eric Young's, and as such any Copyright notices in
18 * the code are not to be removed.
19 * If this package is used in a product, Eric Young should be given attribution
20 * as the author of the parts of the library used.
21 * This can be in the form of a textual message at program startup or
22 * in documentation (online or textual) provided with the package.
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the copyright
28 * notice, this list of conditions and the following disclaimer.
29 * 2. Redistributions in binary form must reproduce the above copyright
30 * notice, this list of conditions and the following disclaimer in the
31 * documentation and/or other materials provided with the distribution.
32 * 3. All advertising materials mentioning features or use of this software
33 * must display the following acknowledgement:
34 * "This product includes cryptographic software written by
35 * Eric Young (eay@cryptsoft.com)"
36 * The word 'cryptographic' can be left out if the rouines from the library
37 * being used are not cryptographic related :-).
38 * 4. If you include any Windows specific code (or a derivative thereof) from
39 * the apps directory (application code) you must include an acknowledgement:
40 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
42 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * The licence and distribution terms for any publically available version or
55 * derivative of this code cannot be changed. i.e. this code cannot simply be
56 * copied and put under another distribution licence
57 * [including the GNU Public Licence.]
59 /* ====================================================================
60 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
62 * Redistribution and use in source and binary forms, with or without
63 * modification, are permitted provided that the following conditions
66 * 1. Redistributions of source code must retain the above copyright
67 * notice, this list of conditions and the following disclaimer.
69 * 2. Redistributions in binary form must reproduce the above copyright
70 * notice, this list of conditions and the following disclaimer in
71 * the documentation and/or other materials provided with the
74 * 3. All advertising materials mentioning features or use of this
75 * software must display the following acknowledgment:
76 * "This product includes software developed by the OpenSSL Project
77 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
79 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
80 * endorse or promote products derived from this software without
81 * prior written permission. For written permission, please contact
82 * openssl-core@openssl.org.
84 * 5. Products derived from this software may not be called "OpenSSL"
85 * nor may "OpenSSL" appear in their names without prior written
86 * permission of the OpenSSL Project.
88 * 6. Redistributions of any form whatsoever must retain the following
90 * "This product includes software developed by the OpenSSL Project
91 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
93 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
94 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
95 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
96 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
97 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
98 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
99 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
100 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
101 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
102 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
103 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
104 * OF THE POSSIBILITY OF SUCH DAMAGE.
105 * ====================================================================
107 * This product includes cryptographic software written by Eric Young
108 * (eay@cryptsoft.com). This product includes software written by Tim
109 * Hudson (tjh@cryptsoft.com).
113 #include "cryptlib.h"
114 #include <openssl/rand.h>
115 #include "rand_lcl.h"
117 #if defined(WINDOWS) || defined(WIN32)
120 # define _WIN32_WINNT 0x0400
122 #include <wincrypt.h>
123 #include <tlhelp32.h>
125 /* Intel hardware RNG CSP -- available from
126 * http://developer.intel.com/design/security/rng/redist_license.htm
128 #define PROV_INTEL_SEC 22
129 #define INTEL_DEF_PROV "Intel Hardware Cryptographic Service Provider"
131 static void readtimer(void);
132 static void readscreen(void);
134 typedef BOOL (WINAPI *CRYPTACQUIRECONTEXT)(HCRYPTPROV *, LPCTSTR, LPCTSTR,
136 typedef BOOL (WINAPI *CRYPTGENRANDOM)(HCRYPTPROV, DWORD, BYTE *);
137 typedef BOOL (WINAPI *CRYPTRELEASECONTEXT)(HCRYPTPROV, DWORD);
139 typedef HWND (WINAPI *GETFOREGROUNDWINDOW)(VOID);
140 typedef BOOL (WINAPI *GETCURSORINFO)(PCURSORINFO);
141 typedef DWORD (WINAPI *GETQUEUESTATUS)(UINT);
143 typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
144 typedef BOOL (WINAPI *HEAP32FIRST)(LPHEAPENTRY32, DWORD, DWORD);
145 typedef BOOL (WINAPI *HEAP32NEXT)(LPHEAPENTRY32);
146 typedef BOOL (WINAPI *HEAP32LIST)(HANDLE, LPHEAPLIST32);
147 typedef BOOL (WINAPI *PROCESS32)(HANDLE, LPPROCESSENTRY32);
148 typedef BOOL (WINAPI *THREAD32)(HANDLE, LPTHREADENTRY32);
149 typedef BOOL (WINAPI *MODULE32)(HANDLE, LPMODULEENTRY32);
154 HCRYPTPROV hProvider = 0;
159 HMODULE advapi, kernel, user;
160 CRYPTACQUIRECONTEXT acquire;
162 CRYPTRELEASECONTEXT release;
164 /* load functions dynamically - not available on all systems */
165 advapi = GetModuleHandle("ADVAPI32.DLL");
166 kernel = GetModuleHandle("KERNEL32.DLL");
167 user = GetModuleHandle("USER32.DLL");
171 acquire = (CRYPTACQUIRECONTEXT) GetProcAddress(advapi,
172 "CryptAcquireContextA");
173 gen = (CRYPTGENRANDOM) GetProcAddress(advapi,
175 release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi,
176 "CryptReleaseContext");
179 if (acquire && gen && release)
181 /* poll the CryptoAPI PRNG */
182 if (acquire(&hProvider, 0, 0, PROV_RSA_FULL,
183 CRYPT_VERIFYCONTEXT))
185 if (gen(hProvider, sizeof(buf), buf) != 0)
187 RAND_add(buf, sizeof(buf), 0);
189 printf("randomness from PROV_RSA_FULL\n");
192 release(hProvider, 0);
195 /* poll the Pentium PRG with CryptoAPI */
196 if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0))
198 if (gen(hProvider, sizeof(buf), buf) != 0)
200 RAND_add(buf, sizeof(buf), 0);
202 printf("randomness from PROV_INTEL_SEC\n");
205 release(hProvider, 0);
212 /* memory usage statistics */
213 GlobalMemoryStatus(&m);
214 RAND_add(&m, sizeof(m), 1);
217 w = GetCurrentProcessId();
218 RAND_add(&w, sizeof(w), 0);
222 GETCURSORINFO cursor;
223 GETFOREGROUNDWINDOW win;
224 GETQUEUESTATUS queue;
226 win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow");
227 cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo");
228 queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus");
234 RAND_add(&h, sizeof(h), 0);
239 /* cursor position */
241 RAND_add(buf, sizeof(buf), 0);
246 /* message queue status */
247 w = queue(QS_ALLEVENTS);
248 RAND_add(&w, sizeof(w), 0);
252 /* Toolhelp32 snapshot: enumerate processes, threads, modules and heap
253 * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm
254 * (Win 9x only, not available on NT)
256 * This seeding method was proposed in Peter Gutmann, Software
257 * Generation of Practically Strong Random Numbers,
258 * http://www.somewhere.nzhttp://www.cs.auckland.ac.nz/~pgut001/pubs/random2.pdf
259 * (The assignment of entropy estimates below is arbitrary, but based
260 * on Peter's analysis the full poll appears to be safe. Additional
261 * interactive seeding is encouraged.)
266 CREATETOOLHELP32SNAPSHOT snap;
269 HEAP32FIRST heap_first;
270 HEAP32NEXT heap_next;
271 HEAP32LIST heaplist_first, heaplist_next;
272 PROCESS32 process_first, process_next;
273 THREAD32 thread_first, thread_next;
274 MODULE32 module_first, module_next;
282 snap = (CREATETOOLHELP32SNAPSHOT)
283 GetProcAddress(kernel, "CreateToolhelp32Snapshot");
284 heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First");
285 heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next");
286 heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst");
287 heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext");
288 process_first = (PROCESS32) GetProcAddress(kernel, "Process32First");
289 process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next");
290 thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First");
291 thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next");
292 module_first = (MODULE32) GetProcAddress(kernel, "Module32First");
293 module_next = (MODULE32) GetProcAddress(kernel, "Module32Next");
295 if (snap && heap_first && heap_next && heaplist_first &&
296 heaplist_next && process_first && process_next &&
297 thread_first && thread_next && module_first &&
298 module_next && (handle = snap(TH32CS_SNAPALL,0))
301 /* heap list and heap walking */
302 hlist.dwSize = sizeof(HEAPLIST32);
303 if (heaplist_first(handle, &hlist))
306 RAND_add(&hlist, hlist.dwSize, 0);
307 hentry.dwSize = sizeof(HEAPENTRY32);
308 if (heap_first(&hentry,
314 while (heap_next(&hentry));
315 } while (heaplist_next(handle,
318 /* process walking */
319 p.dwSize = sizeof(PROCESSENTRY32);
320 if (process_first(handle, &p))
322 RAND_add(&p, p.dwSize, 0);
323 while (process_next(handle, &p));
326 t.dwSize = sizeof(THREADENTRY32);
327 if (thread_first(handle, &t))
329 RAND_add(&t, t.dwSize, 0);
330 while (thread_next(handle, &t));
333 m.dwSize = sizeof(MODULEENTRY32);
334 if (module_first(handle, &m))
336 RAND_add(&m, m.dwSize, 1);
337 while (module_next(handle, &m));
344 printf("Exiting RAND_poll\n");
350 int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam)
352 double add_entropy=0;
366 static int lastx,lasty,lastdx,lastdy;
373 if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0)
376 lastdx=dx, lastdy=dy;
382 RAND_add(&iMsg, sizeof(iMsg), add_entropy);
383 RAND_add(&wParam, sizeof(wParam), 0);
384 RAND_add(&lParam, sizeof(lParam), 0);
386 return (RAND_status());
390 void RAND_screen(void) /* function available for backward compatibility */
397 /* feed timing information to the PRNG */
398 static void readtimer(void)
402 static int have_perfc = 1;
404 static int have_tsc = 1;
412 RAND_add(&cyclecount, sizeof(cyclecount), 1);
413 } __except(EXCEPTION_EXECUTE_HANDLER) {
422 if (QueryPerformanceCounter(&l) == 0)
425 RAND_add(&l, sizeof(l), 0);
428 if (!have_tsc && !have_perfc) {
430 RAND_add(&w, sizeof(w), 0);
434 /* feed screen contents to PRNG */
435 /*****************************************************************************
437 * Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V.
440 * <URL:http://www.microsoft.com/kb/developr/win_dk/q97193.htm>;
441 * the original copyright message is:
443 * (C) Copyright Microsoft Corp. 1993. All rights reserved.
445 * You have a royalty-free right to use, modify, reproduce and
446 * distribute the Sample Files (and/or any modified version) in
447 * any way you find useful, provided that you agree that
448 * Microsoft has no warranty obligations or liability for any
449 * Sample Application Files which are modified.
452 static void readscreen(void)
454 HDC hScrDC; /* screen DC */
455 HDC hMemDC; /* memory DC */
456 HBITMAP hBitmap; /* handle for our bitmap */
457 HBITMAP hOldBitmap; /* handle for previous bitmap */
458 BITMAP bm; /* bitmap properties */
459 unsigned int size; /* size of bitmap */
460 char *bmbits; /* contents of bitmap */
461 int w; /* screen width */
462 int h; /* screen height */
463 int y; /* y-coordinate of screen lines to grab */
464 int n = 16; /* number of screen lines to grab at a time */
466 /* Create a screen DC and a memory DC compatible to screen DC */
467 hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL);
468 hMemDC = CreateCompatibleDC(hScrDC);
470 /* Get screen resolution */
471 w = GetDeviceCaps(hScrDC, HORZRES);
472 h = GetDeviceCaps(hScrDC, VERTRES);
474 /* Create a bitmap compatible with the screen DC */
475 hBitmap = CreateCompatibleBitmap(hScrDC, w, n);
477 /* Select new bitmap into memory DC */
478 hOldBitmap = SelectObject(hMemDC, hBitmap);
480 /* Get bitmap properties */
481 GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm);
482 size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes;
484 bmbits = OPENSSL_malloc(size);
486 /* Now go through the whole screen, repeatedly grabbing n lines */
487 for (y = 0; y < h-n; y += n)
489 unsigned char md[MD_DIGEST_LENGTH];
491 /* Bitblt screen DC to memory DC */
492 BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY);
494 /* Copy bitmap bits from memory DC to bmbits */
495 GetBitmapBits(hBitmap, size, bmbits);
497 /* Get the hash of the bitmap */
500 /* Seed the random generator with the hash value */
501 RAND_add(md, MD_DIGEST_LENGTH, 0);
504 OPENSSL_free(bmbits);
507 /* Select old bitmap back into memory DC */
508 hBitmap = SelectObject(hMemDC, hOldBitmap);
511 DeleteObject(hBitmap);
516 #else /* Unix version */
523 pid_t curr_pid = getpid();
529 /* Use a random entropy pool device. Linux, FreeBSD and OpenBSD
530 * have this. Use /dev/urandom if you can as /dev/random may block
531 * if it runs out of random entries. */
533 if ((fh = fopen(DEVRANDOM, "r")) != NULL)
535 unsigned char tmpbuf[ENTROPY_NEEDED];
538 setvbuf(fh, NULL, _IONBF, 0);
539 n=fread((unsigned char *)tmpbuf,1,ENTROPY_NEEDED,fh);
541 RAND_add(tmpbuf,sizeof tmpbuf,n);
546 /* put in some default random data, we need more than just this */
548 RAND_add(&l,sizeof(l),0);
550 RAND_add(&l,sizeof(l),0);
553 RAND_add(&l,sizeof(l),0);