1 /* apps/winrand.c */
2 /* ====================================================================
3 * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * openssl-core@openssl.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 * This product includes cryptographic software written by Eric Young
51 * (eay@cryptsoft.com). This product includes software written by Tim
52 * Hudson (tjh@cryptsoft.com).
53 *
54 */
55
56 /* Usage: winrand [filename]
57 *
58 * Collects entropy from mouse movements and other events and writes
59 * random data to filename or .rnd
60 */
61
62 #include <windows.h>
63 #include <openssl/opensslv.h>
64 #include <openssl/rand.h>
65
66 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
67 const char *filename;
68
WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR cmdline,int iCmdShow)69 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
70 PSTR cmdline, int iCmdShow)
71 {
72 static char appname[] = "OpenSSL";
73 HWND hwnd;
74 MSG msg;
75 WNDCLASSEX wndclass;
76 char buffer[200];
77
78 if (cmdline[0] == '\0')
79 filename = RAND_file_name(buffer, sizeof buffer);
80 else
81 filename = cmdline;
82
83 RAND_load_file(filename, -1);
84
85 wndclass.cbSize = sizeof(wndclass);
86 wndclass.style = CS_HREDRAW | CS_VREDRAW;
87 wndclass.lpfnWndProc = WndProc;
88 wndclass.cbClsExtra = 0;
89 wndclass.cbWndExtra = 0;
90 wndclass.hInstance = hInstance;
91 wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
92 wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
93 wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
94 wndclass.lpszMenuName = NULL;
95 wndclass.lpszClassName = appname;
96 wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
97 RegisterClassEx(&wndclass);
98
99 hwnd = CreateWindow(appname, OPENSSL_VERSION_TEXT,
100 WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
101 CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
102
103 ShowWindow(hwnd, iCmdShow);
104 UpdateWindow(hwnd);
105
106
107 while (GetMessage(&msg, NULL, 0, 0))
108 {
109 TranslateMessage(&msg);
110 DispatchMessage(&msg);
111 }
112
113 return msg.wParam;
114 }
115
WndProc(HWND hwnd,UINT iMsg,WPARAM wParam,LPARAM lParam)116 LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
117 {
118 HDC hdc;
119 PAINTSTRUCT ps;
120 RECT rect;
121 static int seeded = 0;
122
123 switch (iMsg)
124 {
125 case WM_PAINT:
126 hdc = BeginPaint(hwnd, &ps);
127 GetClientRect(hwnd, &rect);
128 DrawText(hdc, "Seeding the PRNG. Please move the mouse!", -1,
129 &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
130 EndPaint(hwnd, &ps);
131 return 0;
132
133 case WM_DESTROY:
134 PostQuitMessage(0);
135 return 0;
136 }
137
138 if (RAND_event(iMsg, wParam, lParam) == 1 && seeded == 0)
139 {
140 seeded = 1;
141 if (RAND_write_file(filename) <= 0)
142 MessageBox(hwnd, "Couldn't write random file!",
143 "OpenSSL", MB_OK | MB_ICONERROR);
144 PostQuitMessage(0);
145 }
146
147 return DefWindowProc(hwnd, iMsg, wParam, lParam);
148 }
149