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1 | /* crypto/rand/rand_win.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | /* ==================================================================== | |
59 | * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. | |
60 | * | |
61 | * Redistribution and use in source and binary forms, with or without | |
62 | * modification, are permitted provided that the following conditions | |
63 | * are met: | |
64 | * | |
65 | * 1. Redistributions of source code must retain the above copyright | |
66 | * notice, this list of conditions and the following disclaimer. | |
67 | * | |
68 | * 2. Redistributions in binary form must reproduce the above copyright | |
69 | * notice, this list of conditions and the following disclaimer in | |
70 | * the documentation and/or other materials provided with the | |
71 | * distribution. | |
72 | * | |
73 | * 3. All advertising materials mentioning features or use of this | |
74 | * software must display the following acknowledgment: | |
75 | * "This product includes software developed by the OpenSSL Project | |
76 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
77 | * | |
78 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
79 | * endorse or promote products derived from this software without | |
80 | * prior written permission. For written permission, please contact | |
81 | * openssl-core@openssl.org. | |
82 | * | |
83 | * 5. Products derived from this software may not be called "OpenSSL" | |
84 | * nor may "OpenSSL" appear in their names without prior written | |
85 | * permission of the OpenSSL Project. | |
86 | * | |
87 | * 6. Redistributions of any form whatsoever must retain the following | |
88 | * acknowledgment: | |
89 | * "This product includes software developed by the OpenSSL Project | |
90 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
91 | * | |
92 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
93 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
94 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
95 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
96 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
97 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
98 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
99 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
100 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
101 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
102 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
103 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
104 | * ==================================================================== | |
105 | * | |
106 | * This product includes cryptographic software written by Eric Young | |
107 | * (eay@cryptsoft.com). This product includes software written by Tim | |
108 | * Hudson (tjh@cryptsoft.com). | |
109 | * | |
110 | */ | |
111 | ||
112 | ||
13083215 DSH |
113 | #if defined(WINDOWS) || defined(WIN32) |
114 | #include "cryptlib.h" | |
2ace287d BM |
115 | #include <windows.h> |
116 | #include <openssl/rand.h> | |
117 | /* XXX There are probably other includes missing here ... */ | |
118 | ||
119 | ||
120 | #if !defined(USE_MD5_RAND) && !defined(USE_SHA1_RAND) && !defined(USE_MDC2_RAND) && !defined(USE_MD2_RAND) | |
121 | #if !defined(NO_SHA) && !defined(NO_SHA1) | |
122 | #define USE_SHA1_RAND | |
123 | #elif !defined(NO_MD5) | |
124 | #define USE_MD5_RAND | |
125 | #elif !defined(NO_MDC2) && !defined(NO_DES) | |
126 | #define USE_MDC2_RAND | |
127 | #elif !defined(NO_MD2) | |
128 | #define USE_MD2_RAND | |
129 | #else | |
130 | #error No message digest algorithm available | |
131 | #endif | |
132 | #endif | |
133 | ||
134 | #if defined(USE_MD5_RAND) | |
135 | #include <openssl/md5.h> | |
136 | #define MD_DIGEST_LENGTH MD5_DIGEST_LENGTH | |
137 | #define MD(a,b,c) MD5(a,b,c) | |
138 | #elif defined(USE_SHA1_RAND) | |
139 | #include <openssl/sha.h> | |
140 | #define MD_DIGEST_LENGTH SHA_DIGEST_LENGTH | |
141 | #define MD(a,b,c) SHA1(a,b,c) | |
142 | #elif defined(USE_MDC2_RAND) | |
143 | #include <openssl/mdc2.h> | |
144 | #define MD_DIGEST_LENGTH MDC2_DIGEST_LENGTH | |
145 | #define MD(a,b,c) MDC2(a,b,c) | |
146 | #elif defined(USE_MD2_RAND) | |
147 | #include <openssl/md2.h> | |
148 | #define MD_DIGEST_LENGTH MD2_DIGEST_LENGTH | |
149 | #define MD(a,b,c) MD2(a,b,c) | |
150 | #endif | |
151 | ||
152 | ||
153 | int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam) | |
154 | { | |
155 | double add_entropy=0; | |
156 | SYSTEMTIME t; | |
157 | ||
158 | switch (iMsg) | |
159 | { | |
160 | case WM_KEYDOWN: | |
161 | { | |
162 | static WPARAM key; | |
163 | if (key != wParam) | |
164 | add_entropy = 0.05; | |
165 | key = wParam; | |
166 | } | |
167 | break; | |
168 | case WM_MOUSEMOVE: | |
169 | { | |
170 | static int lastx,lasty,lastdx,lastdy; | |
171 | int x,y,dx,dy; | |
172 | ||
173 | x=LOWORD(lParam); | |
174 | y=HIWORD(lParam); | |
175 | dx=lastx-x; | |
176 | dy=lasty-y; | |
177 | if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0) | |
178 | add_entropy=.2; | |
179 | lastx=x, lasty=y; | |
180 | lastdx=dx, lastdy=dy; | |
181 | } | |
182 | break; | |
183 | } | |
184 | ||
185 | GetSystemTime(&t); | |
186 | RAND_add(&iMsg, sizeof(iMsg), add_entropy); | |
187 | RAND_add(&wParam, sizeof(wParam), 0); | |
188 | RAND_add(&lParam, sizeof(lParam), 0); | |
189 | RAND_add(&t, sizeof(t), 0); | |
190 | ||
191 | return (RAND_status()); | |
192 | } | |
193 | ||
194 | ||
195 | /***************************************************************************** | |
196 | * Initialisation function for the SSL random generator. Takes the contents | |
197 | * of the screen as random seed. | |
198 | * | |
199 | * Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V. | |
200 | * | |
201 | * Code adapted from | |
202 | * <URL:http://www.microsoft.com/kb/developr/win_dk/q97193.htm>; | |
203 | * the original copyright message is: | |
204 | * | |
205 | * (C) Copyright Microsoft Corp. 1993. All rights reserved. | |
206 | * | |
207 | * You have a royalty-free right to use, modify, reproduce and | |
208 | * distribute the Sample Files (and/or any modified version) in | |
209 | * any way you find useful, provided that you agree that | |
210 | * Microsoft has no warranty obligations or liability for any | |
211 | * Sample Application Files which are modified. | |
212 | */ | |
213 | /* | |
214 | * I have modified the loading of bytes via RAND_seed() mechanism since | |
215 | * the original would have been very very CPU intensive since RAND_seed() | |
216 | * does an MD5 per 16 bytes of input. The cost to digest 16 bytes is the same | |
217 | * as that to digest 56 bytes. So under the old system, a screen of | |
218 | * 1024*768*256 would have been CPU cost of approximately 49,000 56 byte MD5 | |
219 | * digests or digesting 2.7 mbytes. What I have put in place would | |
220 | * be 48 16k MD5 digests, or effectively 48*16+48 MD5 bytes or 816 kbytes | |
221 | * or about 3.5 times as much. | |
222 | * - eric | |
223 | */ | |
224 | void RAND_screen(void) | |
225 | { | |
226 | HDC hScrDC; /* screen DC */ | |
227 | HDC hMemDC; /* memory DC */ | |
228 | HBITMAP hBitmap; /* handle for our bitmap */ | |
229 | HBITMAP hOldBitmap; /* handle for previous bitmap */ | |
230 | BITMAP bm; /* bitmap properties */ | |
231 | unsigned int size; /* size of bitmap */ | |
232 | char *bmbits; /* contents of bitmap */ | |
233 | int w; /* screen width */ | |
234 | int h; /* screen height */ | |
235 | int y; /* y-coordinate of screen lines to grab */ | |
236 | int n = 16; /* number of screen lines to grab at a time */ | |
237 | ||
238 | /* Create a screen DC and a memory DC compatible to screen DC */ | |
239 | hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL); | |
240 | hMemDC = CreateCompatibleDC(hScrDC); | |
241 | ||
242 | /* Get screen resolution */ | |
243 | w = GetDeviceCaps(hScrDC, HORZRES); | |
244 | h = GetDeviceCaps(hScrDC, VERTRES); | |
245 | ||
246 | /* Create a bitmap compatible with the screen DC */ | |
247 | hBitmap = CreateCompatibleBitmap(hScrDC, w, n); | |
248 | ||
249 | /* Select new bitmap into memory DC */ | |
250 | hOldBitmap = SelectObject(hMemDC, hBitmap); | |
251 | ||
252 | /* Get bitmap properties */ | |
253 | GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm); | |
254 | size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes; | |
255 | ||
26a3a48d | 256 | bmbits = OPENSSL_malloc(size); |
2ace287d BM |
257 | if (bmbits) { |
258 | /* Now go through the whole screen, repeatedly grabbing n lines */ | |
259 | for (y = 0; y < h-n; y += n) | |
260 | { | |
261 | unsigned char md[MD_DIGEST_LENGTH]; | |
262 | ||
263 | /* Bitblt screen DC to memory DC */ | |
264 | BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY); | |
265 | ||
266 | /* Copy bitmap bits from memory DC to bmbits */ | |
267 | GetBitmapBits(hBitmap, size, bmbits); | |
268 | ||
269 | /* Get the MD5 of the bitmap */ | |
270 | MD(bmbits,size,md); | |
271 | ||
272 | /* Seed the random generator with the MD5 digest */ | |
273 | RAND_seed(md, MD_DIGEST_LENGTH); | |
274 | } | |
275 | ||
26a3a48d | 276 | OPENSSL_free(bmbits); |
2ace287d BM |
277 | } |
278 | ||
279 | /* Select old bitmap back into memory DC */ | |
280 | hBitmap = SelectObject(hMemDC, hOldBitmap); | |
281 | ||
282 | /* Clean up */ | |
283 | DeleteObject(hBitmap); | |
284 | DeleteDC(hMemDC); | |
285 | DeleteDC(hScrDC); | |
286 | } | |
287 | ||
288 | #else | |
289 | ||
290 | # if PEDANTIC | |
291 | static void *dummy=&dummy; | |
292 | # endif | |
293 | ||
294 | #endif |