wjcdestest.cpp

WjcDes2-加密－解密 对一个文件的内容进行加密解密

// 3-Des test

#include "WjcDes.h"
#include "stdio.h"
#include "string.h"
#include "memory.h"


bool WritetoFile(char * buf, int size);
bool ReadfromFile(char * buf, int size);

void main()
{
	char key[]={0,2,0,0,9,3,5,1,9,8,0,0,9,1,7},buf[255];
/*	char str[]="Welcome to My 3-DES Test! --WangJunchuan\n"
		       "Northeastern University (www.neu.edu.cn)\n"
			   "Email: [e-mail]";
*/
	char str[]="353163";
	memset(buf, 0, sizeof(buf));
	strcpy(buf, str);
	puts("\nBefore encrypting");
	puts(buf);

	Des_Go(buf, buf, sizeof(str), key, sizeof(key), ENCRYPT);
	puts("\nAfter encrypting");
	puts(buf);
	WritetoFile(buf, sizeof(buf));

//	ReadfromFile(buf, sizeof(buf));
	Des_Go(buf, buf, sizeof(str), key, sizeof(key), DECRYPT);
	puts("\nAfter decrypting");
	puts(buf);

	getchar();
}

bool WritetoFile(char * buf, int size)
{
	FILE *pFile = NULL;
	if(NULL == (pFile = fopen("E:\\学习用例\\password.txt","wt+")))
	{
		printf("open faild!\n");
		return false;
	}


	if(EOF == fputs(buf, pFile))
	{
		printf("failed in fputs!\n");
		return false;
	}
	fclose(pFile);
	return true;
}

bool ReadfromFile(char * buf, int size)
{
	FILE *pFile = NULL;
	if(NULL == (pFile = fopen("E:\\学习用例\\password.txt","rt+")))
	{
		printf("open faild!\n");
		return false;
	}


	if(NULL == fgets(buf, size,pFile))
	{
		printf("failed in fputs!\n");
		return false;
	}
	fclose(pFile);
	return true;
}