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 

    34 typedef void (WINAPI*initPtr)(MD5_CTX*);

    35 typedef void (WINAPI*updatePtr)(MD5_CTX*, unsigned char*, unsigned);

    36 typedef void (WINAPI*finalPtr)(MD5_CTX*);

    37 

    38 static HMODULE cryptDLL()

    39 {

    40     static HMODULE module = LoadLibraryW(L"Cryptdll.dll");

    41     return module;

    42 }

    43 

    44 static initPtr init()

    45 {

    46     static initPtr ptr = reinterpret_cast<initPtr>(GetProcAddress(cryptDLL(), "MD5Init"));

    47     return ptr;

    48 }

    49 

    50 static updatePtr update()

    51 {

    52     static updatePtr ptr = reinterpret_cast<updatePtr>(GetProcAddress(cryptDLL(), "MD5Update"));

    53     return ptr;

    54 }

    55 

    56 static finalPtr final()

    57 {

    58     static finalPtr ptr = reinterpret_cast<finalPtr>(GetProcAddress(cryptDLL(), "MD5Final"));

    59     return ptr;

    60 }

    61 

    62 void MD5_Init(MD5_CTX* context)

    63 {

    64     init()(context);

    65 }

    66 

    67 void MD5_Update(MD5_CTX* context, unsigned char* input, unsigned length)

    68 {

    69     update()(context, input, length);

    70 }

    71 

    72 void 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 }