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md5ctx ctx;
md5_init(&ctx);
const uint8_t *buff = "123456";
int len = 6;
md5_update(&ctx, buff, len);
uint8_t digest[16];
md5_final(digest, &ctx);
char const * hex_digitals = "0123456789ABCDEF";
std::string hex_str;
for( int i = 0; i < 4; ++ i )
{
hex_str.push_back( hex_digitals[ output[i] >> 24 ] );
hex_str.push_back( hex_digitals[ (output[i] >> 16) & 0x000F ] );
hex_str.push_back( hex_digitals[ (output[i] >> 8) & 0x000F ] );
hex_str.push_back( hex_digitals[ output[i] & 0x000F ] );
}
std::cout << hex_str;
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
int main() {
int i,v;
char bs[33];
char b[33];
char hs[9];
char h[9];
char s[4];
char *e;
// 十进制整数转二进制串;
i=1024;
ltoa(i,b,2);
sprintf(bs,"%032s",b);
printf("i=%d,bs=%s\n",i,bs);
// 十进制整数转十六进制串;
i=1024;
ltoa(i,h,16);
sprintf(hs,"%08s",h);
printf("i=%d,hs=%s\n",i,hs);
// 十六进制字符串转成十进制数
strcpy(hs,"00000400");
sscanf(hs,"%x",&i);
printf("hs=%s,i=%d\n",hs,i);
// 二进制字符串转化为十六进制字符串;
strcpy(bs,"00000000000000000000010000000000");
i=strtol(bs,&e,2);
ltoa(i,h,16);
sprintf(hs,"%08s",h);
printf("bs=%s,hs=%s\n",bs,hs);
// 二进制字符串转化为十进制数;
strcpy(bs,"00000000000000000000010000000000");
i=strtol(bs,&e,2);
printf("bs=%s,i=%d\n",bs,i);
// 十六进制字符串转成二进制串
strcpy(hs,"00000400");
sscanf(hs,"%x",&i);
ltoa(i,b,2);
sprintf(bs,"%032s",b);
printf("hs=%s,bs=%s\n",hs,bs);
// ASC\GBK字符串转十六进制串
strcpy(s,"a汉");
i=0;
while (1) {
if (0==s[i]) break;
sprintf(hs+i*2,"%02X",(unsigned char)s[i]);
i++;
}
setlocale(LC_ALL,"chs");
printf("s=%s,hs=%s\n",s,hs);
// 十六进制字符串转成汉字(GBK)及字符(ASC)
strcpy(hs,"61BABA");
i=0;
while (1) {
if (1!=sscanf(hs+i*2,"%2x",&v)) break;
s[i]=(char)v;
i++;
}
s[i]=0;
printf("hs=%s,s=%s\n",hs,s);
return 0;
}
//i=1024,bs=00000000000000000000010000000000
//i=1024,hs=00000400
//hs=00000400,i=1024
//bs=00000000000000000000010000000000,hs=00000400
//bs=00000000000000000000010000000000,i=1024
//hs=00000400,bs=00000000000000000000010000000000
//s=a汉,hs=61BABA
//hs=61BABA,s=a汉
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <memory.h>
const unsigned int s[4][4]={{7,12,17,22},{5,9,14,20},{4,11,16,23},{6,10,15,21}};
const unsigned long t[64]={//t[i]=4294967296*fabs(sin(i+1));
0xd76aa478,0xe8c7b756,0x242070db,0xc1bdceee,0xf57c0faf,0x4787c62a,0xa8304613,0xfd469501,
0x698098d8,0x8b44f7af,0xffff5bb1,0x895cd7be,0x6b901122,0xfd987193,0xa679438e,0x49b40821,
0xf61e2562,0xc040b340,0x265e5a51,0xe9b6c7aa,0xd62f105d,0x02441453,0xd8a1e681,0xe7d3fbc8,
0x21e1cde6,0xc33707d6,0xf4d50d87,0x455a14ed,0xa9e3e905,0xfcefa3f8,0x676f02d9,0x8d2a4c8a,
0xfffa3942,0x8771f681,0x6d9d6122,0xfde5380c,0xa4beea44,0x4bdecfa9,0xf6bb4b60,0xbebfbc70,
0x289b7ec6,0xeaa127fa,0xd4ef3085,0x04881d05,0xd9d4d039,0xe6db99e5,0x1fa27cf8,0xc4ac5665,
0xf4292244,0x432aff97,0xab9423a7,0xfc93a039,0x655b59c3,0x8f0ccc92,0xffeff47d,0x85845dd1,
0x6fa87e4f,0xfe2ce6e0,0xa3014314,0x4e0811a1,0xf7537e82,0xbd3af235,0x2ad7d2bb,0xeb86d391
};
const int serial[64]={
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
1,6,11,0,5,10,15,4,9,14,3,8,13,2,7,12,
5,8,11,14,1,4,7,10,13,0,3,6,9,12,15,2,
0,7,14,5,12,3,10,1,8,15,6,13,4,11,2,9
};
void func(unsigned long& a,
unsigned long b,
unsigned long c,
unsigned long d,
unsigned long M,
unsigned long t,
int s,
int turn) {
unsigned long temp;
switch(turn) {
case 0:
temp=(b&c)|((~b)&d);
break;
case 1:
temp=(d&b)|((~d)&c);
break;
case 2:
temp=b^c^d;
break;
case 3:
temp=c^(b|(~d));
break;
}
temp+=M+t+a;
_asm {
mov ecx,s
rol temp,cl
}
a=b+temp;
}
void MD512(const unsigned long M[16],unsigned long hash[4]) {
int i,j,index=0;
for (i=0;i<4;i++)
for (j=0;j<4;j++) {
func(hash[0],hash[1],hash[2],hash[3],M[serial[index]],t[index],s[i][0],i);
index++;
func(hash[3],hash[0],hash[1],hash[2],M[serial[index]],t[index],s[i][1],i);
index++;
func(hash[2],hash[3],hash[0],hash[1],M[serial[index]],t[index],s[i][2],i);
index++;
func(hash[1],hash[2],hash[3],hash[0],M[serial[index]],t[index],s[i][3],i);
index++;
}
}
void MD5(char* M,int nLen,unsigned long output[4]) {
int i,j;
unsigned long Hash[4]={0x67452301,0xefcdab89,0x98badcfe,0x10325476};
unsigned long hash[4];
//填充
__int64 BitsLen=nLen*8;
int oldlen=nLen;
while(nLen%64!=56) {
M[nLen++]=0;
}
M[oldlen]=0x80u;
*(__int64*)(M+nLen)=BitsLen;
nLen+=8;
//开始处理分组
for (i=0;i<nLen;i+=64) {
memcpy(hash,Hash,sizeof(long)*4);
MD512((const unsigned long*)&M[i],hash);//处理512bits分组
for (j=0;j<4;j++)
Hash[j]+=hash[j];
}
//处理输出。
for (i=0;i<4;i++)
for (j=3;j>=0;j--) {
*((char*)(output+i)+j)=*((char*)(Hash+i)+3-j);
}
}
int main() {
int i;
char szMessage[1000]={0};
printf("input a string:\n>>>");
scanf("%s",szMessage);
unsigned long output[4];
MD5(szMessage,strlen(szMessage),output);
for (i=0;i<4;i++)
printf("%08lx",output[i]);
printf("\n");
return 0;
}