1/*
2 * Copyright (C) 2007 Apple, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include "config.h"
30#include "MD5.h"
31
32#include <windows.h>
33
34typedef void (WINAPI*initPtr)(MD5_CTX*);
35typedef void (WINAPI*updatePtr)(MD5_CTX*, unsigned char*, unsigned);
36typedef void (WINAPI*finalPtr)(MD5_CTX*);
37
38static HMODULE cryptDLL()
39{
40    static HMODULE module = LoadLibraryW(L"Cryptdll.dll");
41    return module;
42}
43
44static initPtr init()
45{
46    static initPtr ptr = reinterpret_cast<initPtr>(GetProcAddress(cryptDLL(), "MD5Init"));
47    return ptr;
48}
49
50static updatePtr update()
51{
52    static updatePtr ptr = reinterpret_cast<updatePtr>(GetProcAddress(cryptDLL(), "MD5Update"));
53    return ptr;
54}
55
56static finalPtr final()
57{
58    static finalPtr ptr = reinterpret_cast<finalPtr>(GetProcAddress(cryptDLL(), "MD5Final"));
59    return ptr;
60}
61
62void MD5_Init(MD5_CTX* context)
63{
64    init()(context);
65}
66
67void MD5_Update(MD5_CTX* context, unsigned char* input, unsigned length)
68{
69    update()(context, input, length);
70}
71
72void MD5_Final(unsigned char hash[16], MD5_CTX* context)
73{
74    final()(context);
75
76    for (int i = 0; i < 16; ++i)
77        hash[i] = context->digest[i];
78}
79