Шифрование/дешифрование файлов методом перестановки

#include "stdafx.h"
#include <windows.h>
#include <conio.h>
#include <iostream>
#include <fstream>
using namespacestd;
#defineSIZE 11
char* cipher(char*Block,char*pas){
intPasArray[SIZE];
PasArray[0]=10;
for(inti=1;i<11;i++)
PasArray[i]=pas[i-1]-48;
char*ResultArr= new char[SIZE+1];
for(inti=0;i<SIZE;i++)
ResultArr[i]=Block[PasArray[i]];
ResultArr[SIZE]='\0';
returnResultArr;
}
char*decipher(char*Block,char*pas){
intPasArray[SIZE];
PasArray[0]=10;
for(inti=1;i<SIZE;i++)
PasArray[i]=pas[i-1]-48;
char*ResultArr= new char[SIZE+1];
for(inti=0;i<SIZE;i++)
ResultArr[PasArray[i]]=Block[i];
ResultArr[SIZE]='\0';
returnResultArr;
}
//------------------------------------------------------------------voidencryption(char*FileName,char*pas,char*IV,boolBlockFlag){
DWORD time=GetTickCount(),size=0,i=0,CRC=0;
fstream fText (FileName, ios::in | fstream::binary);
fstream fCipher("C:/result.txt", ios::out | fstream::binary);
char*tmpStr=new char[SIZE+1];
tmpStr[SIZE]='\0';
fText.seekg( 0, ios::end ); 
size=fText.tellp();
fText.seekg( 0, ios::beg );
cout<<"Encryption"<<endl;
cout<<"Progress:";
if(!BlockFlag){
while(i<size){
for(intj=0;j<SIZE;j++){
tmpStr[j]=fText.get();
i++;
if(i%(size/20)==0) cout<<"|";
}
for(intj=0;j<SIZE-1;j++)
CRC+=tmpStr[j]-tmpStr[j+1];
fCipher<<cipher(tmpStr,pas);
}
}
else{
char*cipBlock=IV;
while(i<size){
cipBlock=cipher(cipBlock,pas);
for(intj=0;j<SIZE;j++){
tmpStr[j]=cipBlock[j]^fText.get();
i++;
if(i%(size/20)==0) cout<<"|";
}
fCipher<<tmpStr;
}
}
fCipher<<CRC;
cout<<endl;
if((time-=GetTickCount())==0)
cout<<"Speed:"<<"#inf"<<endl;
elsecout<<"Speed:"<<size*1000/(-time)<<" letter/s"<<endl;
fText.close();
fCipher.close();
delete[]tmpStr;
}
//------------------------------------------------------------------voiddecryption(char*FileName,char*pas,char*IV,boolBlockFlag){
DWORD time=GetTickCount(),size=0,i=0;
fstream fText (FileName, ios::in | fstream::binary);
fstream fCipher("C:/result2.txt", ios::out | fstream::binary);
char*tmpStr=new char[SIZE+1];
tmpStr[SIZE]='\0';
fText.seekg( 0, ios::end ); 
size=fText.tellp();
fText.seekg( 0, ios::beg );
cout<<"Decryption:"<<endl;
cout<<"Progress:";
if(!BlockFlag){
while(i<size){
for(intj=0;j<SIZE;j++){
tmpStr[j]=fText.get();
i++;
if(i%(size/20)==0) cout<<"|";
}
fCipher<<decipher(tmpStr,pas);
}
}
else{
char*cipBlock=IV;
while(i<size){
cipBlock=cipher(cipBlock,pas);
for(intj=0;j<SIZE;j++){
tmpStr[j]=cipBlock[j]^fText.get();
i++;
if(i%(size/20)==0) cout<<"|";
}
fCipher<<tmpStr;
}
}[]http://vk.com/doc45945512_302391198[/]
cout<<endl;
if((time-=GetTickCount())==0)
cout<<"Speed: #inf"<<endl;
elsecout<<"Speed:"<<size*1000/(-time)<<" letter/s"<<endl;;
fText.close();
fCipher.close();
delete[]tmpStr;
}
//------------------------------------------------------------------int_tmain(intargc, char* argv[])
{
if(argc!=5) {
cout<<"Parametrs error"<<endl;
exit(0);
}
if(!strcmp(argv[1],"enc")){
if(!strcmp(argv[4],"N"))
encryption(argv[2],argv[3],"11111111111",false);
if(!strcmp(argv[4],"B"))
encryption(argv[2],argv[3],"11111111111",true);
}
if(!strcmp(argv[1],"dec")){
if(!strcmp(argv[4],"N"))
decryption(argv[2],argv[3],"11111111111",false);
if(!strcmp(argv[4],"B"))
decryption(argv[2],argv[3],"11111111111",true);
}
return0;
}