#include <iostream> #include <fstream> using namespace std; int main(int argc, char* argv[]){ if(argc < 3){ cout<<"Usage: Project infile outfile"<<endl; return -1; } const int BUFSIZE = 2000; char buf[BUFSIZE]; unsigned int count; // char count unsigned int encryptMask; cout<<"Encryption code[0-255]?"; cin>>encryptMask; if(encryptMask<0 || encryptMask > 255){ cout<<"between 0 and 255."<<endl; return -1; } unsigned char encryptCode = (unsigned char)encryptMask; ifstream infile(argv[1],ios::binary); ofstream outfile(argv[2],ios::binary); cout << "Reading "<<argv[1]<<"and createing"<<argv[2]<<endl; while(!infile.eof()){ infile.read(buf,BUFSIZE); count = infile.gcount(); if(count==0)break; __asm{ lea esi, buf mov ecx,count mov al,encryptCode L1: xor [esi],al inc esi loop L1 } outfile.write(buf,count); } infile.close(); outfile.close(); return 0; }
时间: 2024-10-29 19:11:16