www.pudn.com > md5cc.zip > rand_t.cpp

#include  
#include  
#include  
#include  
 
extern "C"  
{  
	#include "global.h" 
} 
 
// MD5("634634") = 2eb621f1638c200faa63371dc4718ab6 
 
union 
{ 
	unsigned int IVi[4]; 
	unsigned char IVc[16];	 
} g_IV = { 0x2eb621f1, 0x638c200f, 0xaa63371d, 0xc4718ab6 };  
 
#define RL(x, y) (((x) << (y)) | ((x) >> (32 - (y)))) 
#define RR(x, y) (((x) >> (y)) | ((x) << (32 - (y)))) 
 
 
unsigned int random() 
{ 
	unsigned int x = RL((unsigned int)rand(), 16); 
	unsigned int y = (unsigned int)rand(); 
	printf("x = %08x\ty = %04x\t", x, y); 
	return x + y; 
	// return (unsigned int)(RL((unsigned int)rand(), 16) + (unsigned int)rand()); 
} 
 
int main() 
{ 
	printf("hello, rand_t!\n"); 
 
	int i = add(1,5); 
 
	// self build test 
	if(4 == sizeof(unsigned int)) 
	{ 
		printf("unsigned int is %d-bit, self test ok\n", sizeof(unsigned int) * 8); 
	} 
	else 
	{ 
		printf("unsigned int is %d-bit, self test failed. please built as 32-bit.\n", sizeof(unsigned int) * 8); 
	} 
	 
	srand((unsigned)time(NULL)); 
 
	int a; 
 
	printf("sizeof(a) = %d\n", sizeof(a)); 
 
	for(int i=1; i<20; i++) 
	{ 
		a = random(); 
		printf("a = 0x%08x\n", a); 
	} 
 
	getch(); 
	return 0; 
}