910b3a81fd
Windows 8 SDKs complain that GetVersion() is deprecated.
We only use GetVersion like this:
(GetVersion() < 0x80000000)
which checks if the Windows version is NT based. Use a macro check_winnt()
which uses GetVersion() on older SDK versions and true otherwise.
(cherry picked from commit a4cc3c8041)
807 lines
26 KiB
C
807 lines
26 KiB
C
/* crypto/rand/rand_win.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include "cryptlib.h"
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#include <openssl/rand.h>
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#include "rand_lcl.h"
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#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
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#include <windows.h>
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#ifndef _WIN32_WINNT
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# define _WIN32_WINNT 0x0400
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#endif
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#include <wincrypt.h>
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#include <tlhelp32.h>
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/* Limit the time spent walking through the heap, processes, threads and modules to
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a maximum of 1000 miliseconds each, unless CryptoGenRandom failed */
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#define MAXDELAY 1000
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/* Intel hardware RNG CSP -- available from
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* http://developer.intel.com/design/security/rng/redist_license.htm
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*/
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#define PROV_INTEL_SEC 22
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#define INTEL_DEF_PROV L"Intel Hardware Cryptographic Service Provider"
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static void readtimer(void);
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static void readscreen(void);
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/* It appears like CURSORINFO, PCURSORINFO and LPCURSORINFO are only defined
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when WINVER is 0x0500 and up, which currently only happens on Win2000.
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Unfortunately, those are typedefs, so they're a little bit difficult to
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detect properly. On the other hand, the macro CURSOR_SHOWING is defined
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within the same conditional, so it can be use to detect the absence of said
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typedefs. */
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#ifndef CURSOR_SHOWING
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/*
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* Information about the global cursor.
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*/
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typedef struct tagCURSORINFO
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{
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DWORD cbSize;
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DWORD flags;
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HCURSOR hCursor;
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POINT ptScreenPos;
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} CURSORINFO, *PCURSORINFO, *LPCURSORINFO;
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#define CURSOR_SHOWING 0x00000001
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#endif /* CURSOR_SHOWING */
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#if !defined(OPENSSL_SYS_WINCE)
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typedef BOOL (WINAPI *CRYPTACQUIRECONTEXTW)(HCRYPTPROV *, LPCWSTR, LPCWSTR,
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DWORD, DWORD);
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typedef BOOL (WINAPI *CRYPTGENRANDOM)(HCRYPTPROV, DWORD, BYTE *);
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typedef BOOL (WINAPI *CRYPTRELEASECONTEXT)(HCRYPTPROV, DWORD);
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typedef HWND (WINAPI *GETFOREGROUNDWINDOW)(VOID);
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typedef BOOL (WINAPI *GETCURSORINFO)(PCURSORINFO);
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typedef DWORD (WINAPI *GETQUEUESTATUS)(UINT);
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typedef HANDLE (WINAPI *CREATETOOLHELP32SNAPSHOT)(DWORD, DWORD);
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typedef BOOL (WINAPI *CLOSETOOLHELP32SNAPSHOT)(HANDLE);
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typedef BOOL (WINAPI *HEAP32FIRST)(LPHEAPENTRY32, DWORD, size_t);
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typedef BOOL (WINAPI *HEAP32NEXT)(LPHEAPENTRY32);
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typedef BOOL (WINAPI *HEAP32LIST)(HANDLE, LPHEAPLIST32);
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typedef BOOL (WINAPI *PROCESS32)(HANDLE, LPPROCESSENTRY32);
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typedef BOOL (WINAPI *THREAD32)(HANDLE, LPTHREADENTRY32);
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typedef BOOL (WINAPI *MODULE32)(HANDLE, LPMODULEENTRY32);
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#include <lmcons.h>
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#include <lmstats.h>
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#if 1 /* The NET API is Unicode only. It requires the use of the UNICODE
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* macro. When UNICODE is defined LPTSTR becomes LPWSTR. LMSTR was
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* was added to the Platform SDK to allow the NET API to be used in
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* non-Unicode applications provided that Unicode strings were still
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* used for input. LMSTR is defined as LPWSTR.
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*/
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typedef NET_API_STATUS (NET_API_FUNCTION * NETSTATGET)
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(LPWSTR, LPWSTR, DWORD, DWORD, LPBYTE*);
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typedef NET_API_STATUS (NET_API_FUNCTION * NETFREE)(LPBYTE);
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#endif /* 1 */
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#endif /* !OPENSSL_SYS_WINCE */
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int RAND_poll(void)
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{
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MEMORYSTATUS m;
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HCRYPTPROV hProvider = 0;
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DWORD w;
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int good = 0;
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/* Determine the OS version we are on so we can turn off things
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* that do not work properly.
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*/
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OSVERSIONINFO osverinfo ;
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osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ;
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GetVersionEx( &osverinfo ) ;
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#if defined(OPENSSL_SYS_WINCE)
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# if defined(_WIN32_WCE) && _WIN32_WCE>=300
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/* Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available
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* in commonly available implementations prior 300... */
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{
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BYTE buf[64];
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/* poll the CryptoAPI PRNG */
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/* The CryptoAPI returns sizeof(buf) bytes of randomness */
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if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL,
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CRYPT_VERIFYCONTEXT))
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{
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if (CryptGenRandom(hProvider, sizeof(buf), buf))
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RAND_add(buf, sizeof(buf), sizeof(buf));
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CryptReleaseContext(hProvider, 0);
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}
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}
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# endif
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#else /* OPENSSL_SYS_WINCE */
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/*
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* None of below libraries are present on Windows CE, which is
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* why we #ifndef the whole section. This also excuses us from
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* handling the GetProcAddress issue. The trouble is that in
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* real Win32 API GetProcAddress is available in ANSI flavor
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* only. In WinCE on the other hand GetProcAddress is a macro
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* most commonly defined as GetProcAddressW, which accepts
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* Unicode argument. If we were to call GetProcAddress under
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* WinCE, I'd recommend to either redefine GetProcAddress as
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* GetProcAddressA (there seem to be one in common CE spec) or
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* implement own shim routine, which would accept ANSI argument
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* and expand it to Unicode.
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*/
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{
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/* load functions dynamically - not available on all systems */
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HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL"));
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HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL"));
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HMODULE user = NULL;
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HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL"));
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CRYPTACQUIRECONTEXTW acquire = NULL;
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CRYPTGENRANDOM gen = NULL;
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CRYPTRELEASECONTEXT release = NULL;
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NETSTATGET netstatget = NULL;
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NETFREE netfree = NULL;
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BYTE buf[64];
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if (netapi)
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{
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netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet");
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netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree");
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}
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if (netstatget && netfree)
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{
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LPBYTE outbuf;
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/* NetStatisticsGet() is a Unicode only function
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* STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0
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* contains 17 fields. We treat each field as a source of
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* one byte of entropy.
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*/
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if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0)
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{
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RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45);
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netfree(outbuf);
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}
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if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0)
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{
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RAND_add(outbuf, sizeof(STAT_SERVER_0), 17);
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netfree(outbuf);
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}
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}
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if (netapi)
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FreeLibrary(netapi);
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/* It appears like this can cause an exception deep within ADVAPI32.DLL
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* at random times on Windows 2000. Reported by Jeffrey Altman.
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* Only use it on NT.
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*/
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/* Wolfgang Marczy <WMarczy@topcall.co.at> reports that
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* the RegQueryValueEx call below can hang on NT4.0 (SP6).
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* So we don't use this at all for now. */
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#if 0
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if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT &&
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osverinfo.dwMajorVersion < 5)
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{
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/* Read Performance Statistics from NT/2000 registry
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* The size of the performance data can vary from call
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* to call so we must guess the size of the buffer to use
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* and increase its size if we get an ERROR_MORE_DATA
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* return instead of ERROR_SUCCESS.
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*/
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LONG rc=ERROR_MORE_DATA;
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char * buf=NULL;
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DWORD bufsz=0;
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DWORD length;
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while (rc == ERROR_MORE_DATA)
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{
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buf = realloc(buf,bufsz+8192);
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if (!buf)
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break;
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bufsz += 8192;
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length = bufsz;
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rc = RegQueryValueEx(HKEY_PERFORMANCE_DATA, TEXT("Global"),
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NULL, NULL, buf, &length);
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}
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if (rc == ERROR_SUCCESS)
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{
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/* For entropy count assume only least significant
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* byte of each DWORD is random.
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*/
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RAND_add(&length, sizeof(length), 0);
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RAND_add(buf, length, length / 4.0);
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/* Close the Registry Key to allow Windows to cleanup/close
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* the open handle
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* Note: The 'HKEY_PERFORMANCE_DATA' key is implicitly opened
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* when the RegQueryValueEx above is done. However, if
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* it is not explicitly closed, it can cause disk
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* partition manipulation problems.
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*/
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RegCloseKey(HKEY_PERFORMANCE_DATA);
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}
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if (buf)
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free(buf);
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}
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#endif
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if (advapi)
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{
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/*
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* If it's available, then it's available in both ANSI
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* and UNICODE flavors even in Win9x, documentation says.
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* We favor Unicode...
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*/
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acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi,
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"CryptAcquireContextW");
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gen = (CRYPTGENRANDOM) GetProcAddress(advapi,
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"CryptGenRandom");
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release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi,
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"CryptReleaseContext");
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}
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if (acquire && gen && release)
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{
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/* poll the CryptoAPI PRNG */
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/* The CryptoAPI returns sizeof(buf) bytes of randomness */
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if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL,
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CRYPT_VERIFYCONTEXT))
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{
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if (gen(hProvider, sizeof(buf), buf) != 0)
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{
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RAND_add(buf, sizeof(buf), 0);
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good = 1;
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#if 0
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printf("randomness from PROV_RSA_FULL\n");
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#endif
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}
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release(hProvider, 0);
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}
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/* poll the Pentium PRG with CryptoAPI */
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if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0))
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{
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if (gen(hProvider, sizeof(buf), buf) != 0)
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{
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RAND_add(buf, sizeof(buf), sizeof(buf));
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good = 1;
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#if 0
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printf("randomness from PROV_INTEL_SEC\n");
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#endif
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}
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release(hProvider, 0);
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}
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}
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if (advapi)
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FreeLibrary(advapi);
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if ((osverinfo.dwPlatformId != VER_PLATFORM_WIN32_NT ||
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!OPENSSL_isservice()) &&
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(user = LoadLibrary(TEXT("USER32.DLL"))))
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{
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GETCURSORINFO cursor;
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GETFOREGROUNDWINDOW win;
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GETQUEUESTATUS queue;
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win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow");
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cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo");
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queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus");
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if (win)
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{
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/* window handle */
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HWND h = win();
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RAND_add(&h, sizeof(h), 0);
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}
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if (cursor)
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{
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/* unfortunately, its not safe to call GetCursorInfo()
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* on NT4 even though it exists in SP3 (or SP6) and
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* higher.
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*/
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if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT &&
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osverinfo.dwMajorVersion < 5)
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cursor = 0;
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}
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if (cursor)
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{
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/* cursor position */
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/* assume 2 bytes of entropy */
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CURSORINFO ci;
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ci.cbSize = sizeof(CURSORINFO);
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if (cursor(&ci))
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RAND_add(&ci, ci.cbSize, 2);
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}
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if (queue)
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{
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/* message queue status */
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/* assume 1 byte of entropy */
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w = queue(QS_ALLEVENTS);
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RAND_add(&w, sizeof(w), 1);
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}
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FreeLibrary(user);
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}
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/* Toolhelp32 snapshot: enumerate processes, threads, modules and heap
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* http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm
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* (Win 9x and 2000 only, not available on NT)
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*
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* This seeding method was proposed in Peter Gutmann, Software
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* Generation of Practically Strong Random Numbers,
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* http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html
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* revised version at http://www.cryptoengines.com/~peter/06_random.pdf
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* (The assignment of entropy estimates below is arbitrary, but based
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* on Peter's analysis the full poll appears to be safe. Additional
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* interactive seeding is encouraged.)
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*/
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if (kernel)
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{
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CREATETOOLHELP32SNAPSHOT snap;
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CLOSETOOLHELP32SNAPSHOT close_snap;
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HANDLE handle;
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HEAP32FIRST heap_first;
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HEAP32NEXT heap_next;
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HEAP32LIST heaplist_first, heaplist_next;
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PROCESS32 process_first, process_next;
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THREAD32 thread_first, thread_next;
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MODULE32 module_first, module_next;
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HEAPLIST32 hlist;
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HEAPENTRY32 hentry;
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PROCESSENTRY32 p;
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THREADENTRY32 t;
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MODULEENTRY32 m;
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DWORD starttime = 0;
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snap = (CREATETOOLHELP32SNAPSHOT)
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GetProcAddress(kernel, "CreateToolhelp32Snapshot");
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close_snap = (CLOSETOOLHELP32SNAPSHOT)
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GetProcAddress(kernel, "CloseToolhelp32Snapshot");
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heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First");
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heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next");
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|
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;
|
|
}
|
|
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
|
|
|
|
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 */
|
|
/*****************************************************************************
|
|
*
|
|
* Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V.
|
|
*
|
|
* Code adapted from
|
|
* <URL:http://support.microsoft.com/default.aspx?scid=kb;[LN];97193>;
|
|
* the original copyright message is:
|
|
*
|
|
* (C) Copyright Microsoft Corp. 1993. All rights reserved.
|
|
*
|
|
* You have a royalty-free right to use, modify, reproduce and
|
|
* distribute the Sample Files (and/or any modified version) in
|
|
* any way you find useful, provided that you agree that
|
|
* Microsoft has no warranty obligations or liability for any
|
|
* Sample Application Files which are modified.
|
|
*/
|
|
|
|
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 */
|
|
}
|
|
|
|
#endif
|