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like Malloc, Realloc and especially Free conflict with already existing names on some operating systems or other packages. That is reason enough to change the names of the OpenSSL memory allocation macros to something that has a better chance of being unique, like prepending them with OPENSSL_. This change includes all the name changes needed throughout all C files.
293 lines
11 KiB
C
293 lines
11 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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#ifdef WINDOWS
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#include <windows.h>
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#include <openssl/rand.h>
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/* XXX There are probably other includes missing here ... */
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#if !defined(USE_MD5_RAND) && !defined(USE_SHA1_RAND) && !defined(USE_MDC2_RAND) && !defined(USE_MD2_RAND)
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#if !defined(NO_SHA) && !defined(NO_SHA1)
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#define USE_SHA1_RAND
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#elif !defined(NO_MD5)
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#define USE_MD5_RAND
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#elif !defined(NO_MDC2) && !defined(NO_DES)
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#define USE_MDC2_RAND
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#elif !defined(NO_MD2)
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#define USE_MD2_RAND
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#else
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#error No message digest algorithm available
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#endif
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#endif
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#if defined(USE_MD5_RAND)
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#include <openssl/md5.h>
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#define MD_DIGEST_LENGTH MD5_DIGEST_LENGTH
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#define MD(a,b,c) MD5(a,b,c)
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#elif defined(USE_SHA1_RAND)
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#include <openssl/sha.h>
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#define MD_DIGEST_LENGTH SHA_DIGEST_LENGTH
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#define MD(a,b,c) SHA1(a,b,c)
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#elif defined(USE_MDC2_RAND)
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#include <openssl/mdc2.h>
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#define MD_DIGEST_LENGTH MDC2_DIGEST_LENGTH
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#define MD(a,b,c) MDC2(a,b,c)
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#elif defined(USE_MD2_RAND)
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#include <openssl/md2.h>
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#define MD_DIGEST_LENGTH MD2_DIGEST_LENGTH
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#define MD(a,b,c) MD2(a,b,c)
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#endif
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int RAND_event(UINT iMsg, WPARAM wParam, LPARAM lParam)
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{
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double add_entropy=0;
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SYSTEMTIME t;
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switch (iMsg)
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{
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case WM_KEYDOWN:
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{
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static WPARAM key;
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if (key != wParam)
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add_entropy = 0.05;
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key = wParam;
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}
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break;
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case WM_MOUSEMOVE:
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{
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static int lastx,lasty,lastdx,lastdy;
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int x,y,dx,dy;
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x=LOWORD(lParam);
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y=HIWORD(lParam);
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dx=lastx-x;
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dy=lasty-y;
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if (dx != 0 && dy != 0 && dx-lastdx != 0 && dy-lastdy != 0)
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add_entropy=.2;
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lastx=x, lasty=y;
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lastdx=dx, lastdy=dy;
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}
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break;
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}
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GetSystemTime(&t);
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RAND_add(&iMsg, sizeof(iMsg), add_entropy);
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RAND_add(&wParam, sizeof(wParam), 0);
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RAND_add(&lParam, sizeof(lParam), 0);
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RAND_add(&t, sizeof(t), 0);
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return (RAND_status());
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}
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/*****************************************************************************
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* Initialisation function for the SSL random generator. Takes the contents
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* of the screen as random seed.
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*
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* Created 960901 by Gertjan van Oosten, gertjan@West.NL, West Consulting B.V.
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*
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* Code adapted from
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* <URL:http://www.microsoft.com/kb/developr/win_dk/q97193.htm>;
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* the original copyright message is:
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*
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* (C) Copyright Microsoft Corp. 1993. All rights reserved.
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*
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* You have a royalty-free right to use, modify, reproduce and
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* distribute the Sample Files (and/or any modified version) in
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* any way you find useful, provided that you agree that
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* Microsoft has no warranty obligations or liability for any
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* Sample Application Files which are modified.
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*/
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/*
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* I have modified the loading of bytes via RAND_seed() mechanism since
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* the original would have been very very CPU intensive since RAND_seed()
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* does an MD5 per 16 bytes of input. The cost to digest 16 bytes is the same
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* as that to digest 56 bytes. So under the old system, a screen of
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* 1024*768*256 would have been CPU cost of approximately 49,000 56 byte MD5
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* digests or digesting 2.7 mbytes. What I have put in place would
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* be 48 16k MD5 digests, or effectively 48*16+48 MD5 bytes or 816 kbytes
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* or about 3.5 times as much.
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* - eric
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*/
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void RAND_screen(void)
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{
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HDC hScrDC; /* screen DC */
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HDC hMemDC; /* memory DC */
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HBITMAP hBitmap; /* handle for our bitmap */
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HBITMAP hOldBitmap; /* handle for previous bitmap */
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BITMAP bm; /* bitmap properties */
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unsigned int size; /* size of bitmap */
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char *bmbits; /* contents of bitmap */
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int w; /* screen width */
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int h; /* screen height */
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int y; /* y-coordinate of screen lines to grab */
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int n = 16; /* number of screen lines to grab at a time */
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/* Create a screen DC and a memory DC compatible to screen DC */
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hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL);
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hMemDC = CreateCompatibleDC(hScrDC);
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/* Get screen resolution */
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w = GetDeviceCaps(hScrDC, HORZRES);
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h = GetDeviceCaps(hScrDC, VERTRES);
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/* Create a bitmap compatible with the screen DC */
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hBitmap = CreateCompatibleBitmap(hScrDC, w, n);
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/* Select new bitmap into memory DC */
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hOldBitmap = SelectObject(hMemDC, hBitmap);
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/* Get bitmap properties */
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GetObject(hBitmap, sizeof(BITMAP), (LPSTR)&bm);
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size = (unsigned int)bm.bmWidthBytes * bm.bmHeight * bm.bmPlanes;
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bmbits = OPENSSL_malloc(size);
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if (bmbits) {
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/* Now go through the whole screen, repeatedly grabbing n lines */
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for (y = 0; y < h-n; y += n)
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{
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unsigned char md[MD_DIGEST_LENGTH];
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/* Bitblt screen DC to memory DC */
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BitBlt(hMemDC, 0, 0, w, n, hScrDC, 0, y, SRCCOPY);
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/* Copy bitmap bits from memory DC to bmbits */
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GetBitmapBits(hBitmap, size, bmbits);
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/* Get the MD5 of the bitmap */
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MD(bmbits,size,md);
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/* Seed the random generator with the MD5 digest */
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RAND_seed(md, MD_DIGEST_LENGTH);
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}
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OPENSSL_free(bmbits);
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}
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/* Select old bitmap back into memory DC */
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hBitmap = SelectObject(hMemDC, hOldBitmap);
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/* Clean up */
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DeleteObject(hBitmap);
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DeleteDC(hMemDC);
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DeleteDC(hScrDC);
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}
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#else
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# if PEDANTIC
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static void *dummy=&dummy;
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# endif
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#endif
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