cbc.c

在c语言环境下完整的实现了AES++

#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <stdlib.h>
#include <io.h>
#include <fcntl.h>
#include <sys\stat.h>
//#include <time.h>
#include <memory.h>//void *memcpy(void *target,void *source,size_t num_bytes);
void F_F(char *argv,char *argc)
{//文件转换函数j,k,
	FILE *fp;
	FILE *fc;
	unsigned long i,j,len;
	int handle,m,n;
	unsigned char tp;
	if ((handle=open(argv,O_RDONLY))==-1)
		printf("Error open %d\n",argv);
	else
	{
		len=filelength(handle);//printf("len=%u\n",len);
		close(handle);
	}	
	if ((fp=fopen(argv,"rb"))==NULL)
	{
		printf("Error in\n");
		exit(1);
	}
	else
	{
		if ((fc=fopen(argv,"wb"))==NULL)
		{
		printf("Error out\n");
		exit(1);
		}
		else
		{
			for (i=0;i<len>>2;i++)
			{
			j=getw(fp);
			putw(j,fc);
			}
			m=len&3;
			if (m>0)
			{
				for (n=0;n<m;n++)
				{
				tp=fgetc(fp);
				fputc(tp,fc);
				}
			}
			fclose(fc);
		}
		fclose(fp);
	}
}
void main(void)
{
	char argv[256],argc[256];
	printf("请输入文件名(如不在本目录,则需完整的路径,例如C:/WINNT/*.*),并按Enter键:\n");
	scanf("%s",argv);//gets(argv);
	printf("请输入新文件名,并按Enter键:\n");
	scanf("%s",argc);//gets(argc);if (argc==NULL){}
	F_F(argv,argc);
}