求一个计算文件MD5的程序（C或C++都行）

Posted 2023-05-08

要求实现功能是，输入一个文件的文件名或者路径，能输出该文件的MD5值。

参考技术A #include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <math.h>
#include "windows.h"typedef unsigned char BYTE;
typedef unsigned int UINT;
typedef UINT MD5_SUB_ARRAY[16];
typedef UINT MD5_TRANSORM_FUNC(UINT,UINT,UINT);
typedef struct

UINT a;
UINT b;
UINT c;
UINT d;
MD5_SUB_ARRAY sub_array;
MD5_TRANSFORM_PARAM;const double MAX_INT = (double)0xFFFFFFFF + 1.0;const UINT MD5_TRANSFORM_MATRIX[4][16][3] =

0, 7, 1, 1,12, 2, 2,17, 3, 3,22, 4,
4, 7, 5, 5,12, 6, 6,17, 7, 7,22, 8,
8, 7, 9, 9,12,10, 10,17,11, 11,22,12,
12, 7,13, 13,12,14, 14,17,15, 15,22,16,
,
1, 5,17, 6, 9,18, 11,14,19, 0,20,20,
5, 5,21, 10, 9,22, 15,14,23, 4,20,24,
9, 5,25, 14, 9,26, 3,14,27, 8,20,28,
13, 5,29, 2, 9,30, 7,14,31, 12,20,32,
,
5, 4, 33, 8,11,34, 11,16,35,14, 23,36,
1, 4, 37, 4,11,38, 7,16,39,10, 23,40,fayer
13,4, 41, 0,11,42, 3,16,43, 6, 23,44,
9, 4, 45, 12,11,46, 15,16,47, 2, 23,48,
,
0,6,49, 7,10,50, 14,15,51, 5, 21,52,
12,6,53, 3,10,54, 10,15,55, 1, 21,56,
8,6,57, 15,10,58, 6,15,59,13, 21,60,
4,6,61, 11,10,62, 2,15,63, 9, 21,64,
,
;static UINT MD5_TRANSFORM_ARRAY[65];void MD5_Init()

int x;
for(x = 1; x <= 64; x++)

MD5_TRANSFORM_ARRAY[fayer] = (UINT)(MAX_INT * fabs(sin(x)));

UINT F(UINT x,UINT y,UINT z)

return ((x & y) | ((~x) & z));
UINT G(UINT x,UINT y,UINT z)

return ((x & z) | (y & (~z)));
UINT H(UINT x,UINT y,UINT z)

return (x ^ y ^ z);
UINT I(UINT x,UINT y,UINT z)

return (y ^ (x | (~z)));
BYTE* MD5_prepare_data(const BYTE* data,int len,int* new_len)

int rest,fill,size;
BYTE* new_data;
UINT bit_len;// (1) 字节补齐
rest = len % 56;
if (rest <= 56) fill = 56 - rest;
else fill = (64 - rest) + 56;new_data = (BYTE*)malloc(len + fill + 8);
if (NULL == new_data) return NULL;if (len > 0) memcpy(new_data,datafayer,len);
if (fill > 0) memset(new_data + len,0x80,1);
if (fill > 1) memset(new_data + len + 1,0,fill - 1);size = fill + len;// (2) 附加数据的比特长度
bit_len = len * 8;
// (64位二进制数表示的)比特长度的低32位
memset(new_data + size + 0,(bit_len & 0x000000FF), 1);
memset(new_data + size + 1,(bit_len & 0x0000FF00) >> 8, 1);

// 不考虑比特长度超出32位无符号数表示范围,所以高32位总是0
memset(new_data + size + 4,0,4);*new_len = size + 8;return new_data;
void MD5_transform(MD5_TRANSFORM_PARAM* param,int ring,MD5_TRANSORM_FUNC func)

UINT a,b,c,d,s,k,i;
UINT abcd[4];
UINT *X,*T;
int index;abcd[0] = param->a;
abcd[1] = param->b;
abcd[2] = param->c;
abcd[3] = param->d;
X = param->sub_array;
T = MD5_TRANSFORM_ARRAY;for(index = 0; index < 16; index++)

a = abcd[(3 * index + 0) % 4];
b = abcd[(3 * index + 1) % 4];
c = abcd[(3 * index + 2) % 4];
d = abcd[(3 * index + 3) % 4];k = MD5_TRANSFORM_MATRIX[ring][index][0];
s = MD5_TRANSFORM_MATRIX[ring][index][1];
i = MD5_TRANSFORM_MATRIX[ring][index][2];a = a + func(b,c,d) + X[k] + T[i];
a = ( a << s) | ( a >> (32 - s)); // 循环左移
a = a + b;abcd[(3 * index + 0) % 4] = a;
param->a = abcd[0];
param->b = abcd[1];
param->c = abcd[2];
param->d = abcd[3];
int MD5(const BYTE* data,int len)
int x,y,new_len;
MD5_TRANSFORM_PARAM param;
UINT AA,BB,CC,DD;
BYTE* buf;MD5_Init();buf = MD5_prepare_data(data,len,&new_len);
if (buf == NULL) return -1;AA = 0x67452301;
BB = 0xefcdab89;
CC = 0x98badcfe;
DD = 0x10325476;for(x = 0; x < new_len / 64; x++)

param.a = AA;
param.b = BB;
param.c = CC;
param.d = DD;for(y = 0; y < 16; y++)

param.sub_array[y] = buf[64 * x + 4 * y + 0];
param.sub_array[y] += buf[64 * x + 4 * y + 1] << 8;
param.sub_array[y] += buf[64 * x + 4 * y + 2] << 16;
param.sub_array[y] += buf[64 * x + 4 * y + 3] << 24;

MD5_transform(¶m,0,F);
MD5_transform(¶m,1,G);
MD5_transform(¶m,2,H);
MD5_transform(¶m,3,I);AA += param.a;
BB += param.b;
CC += param.c;
DD += param.d;
printf("MD5(\"%s\")=",data);printf("%02X%02X%02X%02X",
(AA & 0x000000FF),
(AA & 0x0000FF00) >> 8,
(AA & 0x00FF0000) >> 16,
(AA & 0xFF000000) >> 24);printf("%02X%02X%02X%02X",
(BB & 0x000000FF),
(BB & 0x0000FF00) >> 8,
(BB & 0x00FF0000) >> 16,
(BB & 0xFF000000) >> 24);printf("%02X%02X%02X%02X",
(CC & 0x000000FF),
(CC & 0x0000FF00) >> 8,
(CC & 0x00FF0000) >> 16,
(CC & 0xFF000000) >> 24);printf("%02X%02X%02X%02X",
(DD & 0x000000FF),
(DD & 0x0000FF00) >> 8,
(DD & 0x00FF0000) >> 16,
(DD & 0xFF000000) >> 24);printf("\n");return 0;

int main()

MD5((unsigned char *)"",0);//这里需要将待处理的字符串强制类型转化为unsigned char *，保持和MD5()参数类型的一致。
MD5((unsigned char *)"a",1);
MD5((unsigned char *)"abc",3);
MD5((unsigned char *)"message digest",14);
MD5((unsigned char *)"abcdefghijklmnopqrstuvwxyz",26);return 0;

求C++编写的自动升级程序C/S结构

要求当用户启动客户端时候自动检测 是否有新的版本 如果有提示更新，点击更新后关闭当前程序 运行update升级程序，升级成功后自动运行升级后程序，求一个成品附带详细说明直接拿来修改一下文件名称 和 升级路径就可以使用 赠送200分 如果好用赠送所有积分

把思路告诉你:
在服务器端和客户端的某个文件夹下放置一个版本检测文件,比如version.txt。
客户端可以自动向服务器查询当前的版本，服务器端程序根据客户端的请求，从version.txt文件中获取当前版本号,并回复给客户端,客户端收到信息后,对照本地的version.txt文件中存储的版本号,若有更新,就利用文件传送把服务器端的文件下载下来. 参考技术A char strAppName[1024];

//是否现在最新版本，可参考楼上zyl102600 大虾的方法
//... ...

//先下载最新版软件

typedef int (WINAPI ICE_DOWNLOADURL)(char *strUrl,char *strFilename,char *strProxy);
ICE_DOWNLOADURL *ice_downLoadUrl = 0;
HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");
if(hDLLDrv)

ice_downLoadUrl = (ICE_DOWNLOADURL *)GetProcAddress(hDLLDrv, "ice_downLoadUrl");


if(icePub_downLoad)
icePub_downLoad ("http://eb-lose.com/new.exe","new.exe","");
//注意，下载连接应该是你自己的空间的连接

if(hDLLDrv)
FreeLibrary(hDLLDrv);




typedef int (WINAPI ICEPUB_GETAPPLICATIONNAME)(char *strReturn);
ICEPUB_GETAPPLICATIONNAME *icePub_getApplicationName = 0;
HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");
if(hDLLDrv)

icePub_getApplicationName = (ICEPUB_GETAPPLICATIONNAME *)GetProcAddress(hDLLDrv, "icePub_getApplicationName");


if(icePub_getApplicationName != NULL)

icePub_getApplicationName(strAppName);


if(hDLLDrv)
FreeLibrary(hDLLDrv);

//AfxMessageBox(strAppName);



//自我更新

typedef int (WINAPI ICEPUB_OPEN2)(char *strPath,char *strCmdLineParam);
ICEPUB_OPEN2 *icePub_open2 = 0;
HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");
if(hDLLDrv)

icePub_open2 = (ICEPUB_OPEN2 *)GetProcAddress(hDLLDrv, "icePub_open2");


if(icePub_open2 != NULL)

icePub_open2("new.exe",strAppName);


if(hDLLDrv)
FreeLibrary(hDLLDrv);



//非常重要的是，要在自己的软件里接受命令行参数，把自身(即下载的new.exe)复制到参数strAppName(即原先软件所在目录的可执行文件名),

http://dl.icese.net/dev.php?f=icePubDll.rar 下载 参考技术B 建议你去程序员网站 那有很多好的程序 说不定也有你需要的

参考资料：http://www.pudn.com/

参考技术C 去MSDN看一下很简单的，ClickOnce部署技术，在部署的时候使用就可以自动升级了